Double-cavity parallel piezoelectric pump with partition plate assemblies at inlet and outlet

Abstract

The utility model relates to the technical field of piezoelectric pumps, in particular to a double-cavity parallel piezoelectric pump with partition plate assemblies at an inlet and an outlet, which comprises a pump body assembly internally provided with piezoelectric vibration pieces, a liquid conveying opening allowing liquid to flow in and out is arranged on the pump body assembly, a flexible pipe is arranged on the liquid conveying opening, and a mounting frame is fixed on the pump body assembly. A maintaining frame for limiting the bending degree of the flexible pipe is arranged on the mounting frame, one end of the flexible pipe is connected with two liquid boxes, the two sides of each liquid box are provided with a liquid inlet and a liquid outlet through the liquid pipes respectively, partition plate assemblies capable of interfering with liquid flowing are arranged on the liquid pipes, and guide plates for guiding the liquid flowing direction are arranged in the liquid boxes. The pump body assembly and the liquid box can be separated through the flexible pipe, the horizontal bent section and the vertical bent section on the flexible pipe can allow the flexible pipe to deform within limitation, the pump body assembly is not affected, and the guide plate in the liquid box is matched with the external partition plate assembly to enable liquid to flow in a one-way mode; therefore, the liquid pumping of an external pipeline is not influenced.

Description

Technical Field

[0001] The invention relates to a double-cavity parallel piezoelectric pump with a partition assembly at an inlet and an outlet, belonging to the technical field of piezoelectric pumps. Background Art

[0002] A piezoelectric pump is a new type of fluid pump that uses the deformation of piezoelectric materials under the action of an electric field to generate pressure and push the fluid. It does not require an additional drive motor, but uses the inverse piezoelectric effect of the piezoelectric material to deform the piezoelectric vibrator, which then creates a volume change in the pump chamber to achieve fluid output or uses the piezoelectric vibrator to generate fluctuations to transmit liquids. Piezoelectric pumps have characteristics that traditional pumps do not have.

[0003] Since there are no driving components, the main structure is simple, the cost is low, the reliability is strong, and the piezoelectric pump makes little noise during operation, it is widely used in small mobile devices in various fields, specifically fluid pumping components in water cooling technology solutions, such as laptop computers, blade servers, photovoltaic cells, automobiles and avionics equipment, etc., and is also widely used in trace fluid pumping distribution and pump miniaturization.

[0004] For example, the invention patent with the publication number of the Chinese patent application document CN107781144A discloses a dual-cavity single-vibrator piezoelectric pump, including an upper pump body, a middle pump body, a lower pump body, a dual-chip piezoelectric vibrator, and a valve valve; the upper and lower pump bodies each have a pump cavity inlet, a valve valve is installed at the inlet, the lower pump body and the upper pump body are connected through the middle pump body, a dual-chip piezoelectric vibrator is installed between the middle pump body and the lower pump body, the two symmetrical outlet chambers on the inner side are completely located in the lower pump body, and the two symmetrical outlet chambers on the outer side are connected through the middle pump body outlet chamber and the upper pump body outlet chamber; an alternating current signal is applied to the dual-chip piezoelectric vibrator, and the dual-chip piezoelectric vibrator generates bending deformation under the stimulation of the electrical signal, so that the volume of the two pump chambers of the upper and lower pump bodies changes alternately, and the pressure difference inside and outside the pump chamber is generated by the change in volume to realize the suction and output of liquid. The present invention has the advantages of large output liquid flow rate and good reflux resistance effect, and has broad application prospects in the fields of micro robots and drug transportation.

[0005] The technical solution disclosed in the above document utilizes the periodic deformation of the piezoelectric vibrator and cooperates with the cavities on both sides of the piezoelectric vibrator to realize the suction and output of liquid, and reasonably utilizes the deformation characteristics of the piezoelectric vibrator. However, most of the existing piezoelectric pumps are connected in series in the middle of the fluid delivery pipeline as a whole. In this way, in most scenarios, the piezoelectric pump will be completely exposed to the same environment as the delivery pipeline. The mechanical vibration, temperature and medium in the use environment cannot avoid contact with the piezoelectric pump. Various external factors will affect the operation of the internal components of the piezoelectric pump and shorten the service life of the components.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The purpose of the present invention is to provide a double-chamber parallel piezoelectric pump with a partition assembly at the inlet and outlet in order to solve the above-mentioned problem. The pump body assembly and the liquid box can be separated by a flexible tube. The horizontal bending section and the vertical bending section on the flexible tube can allow the flexible tube to deform within a limit so as not to affect the pump body assembly. The guide plate in the liquid box cooperates with the external partition assembly to enable the liquid to flow in one direction so as not to affect the liquid pumping of the external pipeline.

[0008] The present invention achieves the above-mentioned purpose through the following technical scheme: a double-cavity parallel piezoelectric pump with a partition assembly at the inlet and outlet, including a pump body assembly with a piezoelectric vibrator, the pump body assembly is provided with an infusion port allowing liquid to enter and exit, the piezoelectric vibrator requires an external driving system for voltage excitation to produce deformation, a flexible tube is provided on the infusion port, a mounting frame is fixed on the pump body assembly, a maintaining frame for limiting the bending degree of the flexible tube is provided on the mounting frame, one end of the flexible tube is connected to a liquid box, the liquid boxes are two, the two sides of the liquid box are respectively provided with a liquid inlet and a liquid outlet through the liquid tube, the liquid tube is provided with a partition assembly that can interfere with the flow of liquid, a guide plate for guiding the flow direction of the liquid is provided in the liquid box, and the guide plate is preferably a V-shaped plate. In order to avoid the guide plate from affecting the flow of the liquid too much, the guide plate is distributed on the side close to the liquid inlet, and the connecting part of the flexible tube and the liquid box is close to the liquid outlet. One side of the pump body assembly is provided with a power connector through a power cord.

[0009] Furthermore, in order to utilize the deformation characteristics of the reciprocating piezoelectric vibrator to associate it with the inlet and outlet of liquid, the pump body assembly is provided with a driving device for triggering the partition assembly, and the pump body assembly includes a pump casing, an isolation plate is fixed between the inner walls of the pump casing, the piezoelectric vibrators are respectively arranged on both side surfaces of the pump casing, and a supporting ring frame supporting the driving device is fixed on the outer wall of the pump casing.

[0010] Furthermore, in order to utilize the deformation characteristics of the reciprocating piezoelectric vibrator to associate it with the inlet and outlet of the liquid and reduce the component volume of the pump body assembly, the pump body assembly is provided with a driving device for triggering the partition assembly. The pump body assembly includes a pump housing, and the piezoelectric vibrator is fixed in the pump housing, and the space of the pump housing is divided into two cavities, and the infusion ports are respectively provided on the side walls of the corresponding cavity parts.

[0011] Furthermore, in order to utilize the deformation characteristics of the piezoelectric vibrator, the deformation thrust of the piezoelectric vibrator is used to trigger the partition assembly next to the liquid inlet and outlet through liquid pressure. The driving device includes a main driving cylinder, a piston rod is provided in the main driving cylinder, one end of the piston rod extends to the side of the piezoelectric vibrator, one end of the piston rod is provided with a spoke partition, and a return spring is provided in the main driving cylinder to push the piston rod close to the piezoelectric vibrator.

[0012] Furthermore, in order to facilitate the interference with the flow of liquid and thus reduce unnecessary liquid loss, the partition assembly includes a tubular block that allows liquid to pass through, the tubular block is provided with a spoiler port, a spoiler is slidably clamped in the spoiler port, a sealing shell is provided outside the spoiler, a vertical plate is fixed to the top of the spoiler, a secondary driving cylinder for controlling the movement of the spoiler is fixed to the top of the vertical plate through a connecting rod, a spoiler piston is slidably clamped in the secondary driving cylinder, a driving liquid pipe connected to the main driving cylinder is provided on the side wall of the secondary driving cylinder, and the spoiler can block the spoiler port on the tubular block to obstruct the passage of liquid at the spoiler port.

[0013] Furthermore, in order to give the flexible tube sufficient bending freedom, the flexible tube includes a horizontal bending section and a vertical bending section, and one end of the flexible tube is provided with an extension section connected to the liquid box.

[0014] Furthermore, in order to isolate the liquid, a sliding isolation block is provided in the extension section, the flexible tube and the pump housing are filled with fluid medium, and the extension section is made of a metal material that is difficult to bend.

[0015] Furthermore, in order to limit the bending of the flexible tube and make the bending of the flexible tube within a controllable range, the maintaining frame includes a fixed plate, on which is provided a clamping plate that fits the outside of the horizontal bending section and the vertical bending section, and the clamping plates are connected by connecting columns, and a buffer is filled between the connecting column and the horizontal bending section and the vertical bending section. The buffer is specifically required to support the flexible tube and provide a certain limiting adhesion effect, and can be filled with colloid or use a spring to connect the flexible tube and the outer wall of the connecting column.

[0016] The technical effects and advantages of the present invention are as follows: the present invention can separate the pump body assembly and the liquid box through a flexible tube, and the horizontal bending section and the vertical bending section on the flexible tube can allow the flexible tube to deform within a limit, thereby not affecting the pump body assembly, and the guide plate in the liquid box cooperates with the external partition assembly to enable the liquid to flow in one direction, thereby not affecting the liquid pumping of the external pipeline, and the deformation of the piezoelectric vibrator can be used to trigger the spoiler to block the liquid, so that the liquid can flow in one direction better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the liquid box of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the liquid box of the present invention;

[0020] Figure 4 It is a schematic diagram of the first structure of the pump assembly of the present invention;

[0021] Figure 5 It is a schematic cross-sectional view of a first structure of a pump assembly of the present invention;

[0022] Figure 6 It is a second structural schematic diagram of the pump body assembly of the present invention;

[0023] Figure 7 It is a schematic diagram of the internal structure of the partition assembly of the present invention;

[0024] Figure 8 It is a schematic diagram of the flexible pipe installation structure of the present invention;

[0025] Fig. 9 It is a schematic diagram of the structure of the maintenance frame of the present invention;

[0026] Fig.10 It is a schematic diagram of the structure of the flexible pipe of the present invention;

[0027] Fig.11 It is a schematic structural diagram of the sliding isolation block in the flexible pipe of the present invention.

[0028] In the figure: 1. piezoelectric vibrator; 2. pump body assembly; 201. infusion port; 202. pump housing; 203. isolation plate; 204. support ring frame; 3. flexible tube; 4. mounting frame; 5. maintenance frame; 501. fixing plate; 502. clamping plate; 6. liquid box; 601. liquid inlet; 602. liquid outlet; 603. guide plate; 7. partition assembly; 701. tubular block; 702. spoiler; 703. sealing shell; 704. auxiliary drive cylinder; 705. spoiler piston; 8. drive device; 801. main drive cylinder; 802. piston rod; 803. spoke partition; 9. sliding isolation block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0030] See also Figure 1-11 As shown, a double-chamber parallel piezoelectric pump with a partition assembly at the inlet and outlet includes a pump body assembly 2 with a piezoelectric vibrator 1 inside, an infusion port 201 for allowing liquid to enter and exit is provided on the pump body assembly 2, the piezoelectric vibrator 1 requires an external driving system for voltage excitation to produce deformation, a flexible tube 3 is provided on the infusion port 201, a mounting frame 4 is fixed on the pump body assembly 2, a maintaining frame 5 for limiting the bending degree of the flexible tube 3 is provided on the mounting frame 4, one end of the flexible tube 3 is connected to a liquid box 6, there are two liquid boxes 6, and a liquid inlet 601 and a liquid outlet 602 are respectively provided on both sides of the liquid box 6 through the liquid tube, a partition assembly 7 that can interfere with the flow of liquid is provided on the liquid tube, and a guide plate 603 for guiding the flow direction of the liquid is provided in the liquid box 6, and the guide plate 603 is preferably a V-shaped plate, in order to prevent the guide plate 603 from affecting the flow of the liquid too much, the guide plate 603 is distributed on one side close to the liquid inlet 601, and the connection part between the flexible tube 3 and the liquid box 6 is close to the liquid outlet 602. A power connector is provided on one side of the pump body assembly 2 through a power cord. When in use, the power connector is connected to an external power supply, and then the liquid tube is connected in series between the liquid pipelines. At this time, when the pump body assembly 2 is operating, the piezoelectric vibrator 1 can be deformed when voltage is applied, and then the pressure in the cavity on one side of the piezoelectric vibrator 1 is changed, and then the liquid flow in the corresponding liquid box 6 is linked through the flexible tube 3 connected to the infusion port 201, and the guide plate 603 in the liquid box 6 can hinder the flow of the liquid. In the repeated pressure changes, the liquid can flow to the liquid outlet 602, thereby achieving the purpose of pumping the liquid, and the flexible tube 3 can isolate the vibration transmission to prevent the vibration at the pipeline components from affecting the pump body assembly 2.

[0031] In order to utilize the deformation characteristics of the reciprocating piezoelectric vibrator 1 to associate it with the inlet and outlet of the liquid, a driving device 8 for triggering the partition assembly 7 is provided on the pump body assembly 2. The pump body assembly 2 includes a pump casing 202, and an isolation plate 203 is fixed between the inner walls of the pump casing 202. The piezoelectric vibrator 1 is respectively arranged on the two side surfaces of the pump casing 202, and a supporting ring frame 204 for supporting the driving device 8 is fixed on the outer wall of the pump casing 202. When in use, since the piezoelectric vibrator 1 is located on both sides of the pump casing 202, the relative load of the piezoelectric vibrator 1 is concentrated on one side, thereby avoiding excessive load on the piezoelectric vibrator 1 and causing material fatigue. At the same time, a single piezoelectric vibrator 1 controls a separate fluid cavity, so that the liquid flow frequency during pumping is adjustable, and can be matched according to needs, so as to facilitate stable pumping of the liquid.

[0032] In order to utilize the deformation characteristics of the piezoelectric vibrator 1, the deformation thrust of the piezoelectric vibrator 1 is triggered by liquid pressure to form a partition assembly 7 next to the liquid inlet 601 and the liquid outlet 602. The driving device 8 includes a main driving cylinder 801, a piston rod 802 is provided in the main driving cylinder 801, one end of the piston rod 802 extends to the side of the piezoelectric vibrator 1, and a spoke partition 803 is provided at one end of the piston rod 802. A return spring for pushing the piston rod 802 close to the piezoelectric vibrator 1 is provided in the main driving cylinder 801. In order to facilitate the interference with the flow of liquid and reduce unnecessary liquid loss, the partition assembly 7 includes a tubular block 701 for allowing liquid to pass through. A spoiler port is provided on the tubular block 701, and a spoiler 702 is slidably connected in the spoiler port. A sealing shell 703 is provided outside the spoiler 702. A vertical plate is fixed on the top of the spoiler 702, and an auxiliary driving cylinder 704 for controlling the movement of the spoiler 702 is fixed on the top of the vertical plate through a connecting rod. , a spoiler piston 705 is slidably connected in the auxiliary driving cylinder 704, and a driving liquid pipe connected to the main driving cylinder 801 is provided on the side wall of the auxiliary driving cylinder 704. The spoiler plate 702 can block the spoiler port on the tubular block 701, so that the passage of liquid at the spoiler port is blocked. When in use, the piezoelectric vibrator 1 is deformed to push the spoke partition 803, thereby moving the piston rod 802, and the piston rod 802 transmits the internal pressure to the auxiliary driving cylinder 704 connected thereto through the driving liquid pipe, and then controls the movement of the spoiler plate 702 through the spoiler piston 705 in the auxiliary driving cylinder 704, so as to achieve the purpose of blocking the corresponding guide port. Since the liquid inlet 601 and the liquid outlet 602 need to be opened alternately, the position of the driving liquid pipe also needs to be changed accordingly. Specifically, the spoiler plate 702 next to the liquid inlet 601 needs to be opened when liquid is inhaled, and the spoiler plate 702 next to the liquid outlet 602 needs to be opened when liquid is discharged.

[0033] In order to give the flexible tube 3 sufficient bending freedom, the flexible tube 3 includes a horizontal bending section and a vertical bending section. One end of the flexible tube 3 is provided with an extension section connected to the liquid box 6. When in use, the horizontal bending section and the vertical bending section cooperate with each other to prevent the pump body assembly 2 from being disturbed by external forces, and the extension section is in direct contact and communication with the liquid box 6.

[0034] In order to isolate the liquid, a sliding isolation block 9 is provided in the extension section, and the flexible tube 3 and the pump housing 202 are filled with fluid medium. The extension section is made of metal material that is inconvenient to bend. In this way, when in use, the liquid in the liquid pipeline does not contact the inside of the pump body assembly 2, thereby avoiding some interference factors, such as improper heat transfer and avoiding the substances contained in the liquid from contacting the pump body assembly 2.

[0035] In order to limit the bending of the flexible tube 3 and make the bending of the flexible tube 3 within a controllable range, the maintaining frame 5 includes a fixing plate 501, on which a clamping plate 502 is provided which fits the outside of the horizontal bending section and the vertical bending section. The clamping plates 502 are connected by connecting columns, and buffers are filled between the connecting columns and the horizontal bending section and the vertical bending section. The buffers are specifically required to support the flexible tube 3 and provide a certain limiting adhesion effect. The flexible tube 3 and the outer wall of the connecting column can be connected by filling with colloid or using a spring. When in use, the deformation of the flexible tube 3 can be positionally limited by the clamping plate 502 outside the bending part, and the buffer in the inner circle can absorb vibration and support the flexible tube 3 to maintain the overall bending shape of the flexible tube 3.

[0036] When in use, the present invention can separate the pump body assembly 2 and the liquid box 6 through the flexible tube 3. The horizontal bending section and the vertical bending section on the flexible tube 3 can allow the flexible tube 3 to deform within a limit, thereby not affecting the pump body assembly 2. The guide plate 603 in the liquid box 6 cooperates with the external partition assembly 7 to enable the liquid to flow in one direction, thereby not affecting the liquid pumping of the external pipeline, and can be matched with the driving device 8 to trigger the partition assembly 7, and use the spoiler 702 to better pump the liquid. In this embodiment, a separate piezoelectric vibrator 1 is driven to be placed in the corresponding partition assembly, so that material fatigue caused by excessive load on the piezoelectric vibrator 1 can be avoided. At the same time, the separate piezoelectric vibrator 1 controls a separate fluid cavity, so that the liquid flow frequency during pumping is adjustable, and can be matched according to needs to facilitate stable pumping of the liquid. Embodiment 2

[0037] See also Figure 1-11As shown, a double-chamber parallel piezoelectric pump with a partition assembly at the inlet and outlet includes a pump body assembly 2 with a piezoelectric vibrator 1 inside, an infusion port 201 for allowing liquid to enter and exit is provided on the pump body assembly 2, the piezoelectric vibrator 1 requires an external driving system for voltage excitation to produce deformation, a flexible tube 3 is provided on the infusion port 201, a mounting frame 4 is fixed on the pump body assembly 2, a maintaining frame 5 for limiting the bending degree of the flexible tube 3 is provided on the mounting frame 4, one end of the flexible tube 3 is connected to a liquid box 6, there are two liquid boxes 6, and a liquid inlet 601 and a liquid outlet 602 are respectively provided on both sides of the liquid box 6 through the liquid tube, a partition assembly 7 that can interfere with the flow of liquid is provided on the liquid tube, and a guide plate 603 for guiding the flow direction of the liquid is provided in the liquid box 6, and the guide plate 603 is preferably a V-shaped plate, in order to prevent the guide plate 603 from affecting the flow of the liquid too much, the guide plate 603 is distributed on one side close to the liquid inlet 601, and the connection part between the flexible tube 3 and the liquid box 6 is close to the liquid outlet 602. A power connector is provided on one side of the pump body assembly 2 through a power cord. When in use, the power connector is connected to an external power supply, and then the liquid tube is connected in series between the liquid pipelines. At this time, when the pump body assembly 2 is operating, the piezoelectric vibrator 1 can be deformed when voltage is applied, and then the pressure in the cavity on one side of the piezoelectric vibrator 1 is changed, and then the liquid flow in the corresponding liquid box 6 is linked through the flexible tube 3 connected to the infusion port 201, and the guide plate 603 in the liquid box 6 can hinder the flow of the liquid. In the repeated pressure changes, the liquid can flow to the liquid outlet 602, thereby achieving the purpose of pumping the liquid, and the flexible tube 3 can isolate the vibration transmission to prevent the vibration at the pipeline components from affecting the pump body assembly 2.

[0038] In order to utilize the deformation characteristics of the reciprocating piezoelectric vibrator 1 to associate the inlet and outlet of the liquid and reduce the component volume of the pump body assembly 2, a driving device 8 for triggering the partition assembly 7 is provided on the pump body assembly 2. The pump body assembly 2 includes a pump housing 202. The piezoelectric vibrator 1 is fixed in the pump housing 202, and the space of the pump housing 202 is divided into two cavities. Infusion ports 201 are respectively provided on the side walls of the corresponding cavity parts. When in use, the cavities on both sides of the piezoelectric vibrator 1 and the driving device 8 move periodically with each other, which can improve the integration between components, reduce the volume occupied by components, and reasonably utilize the reciprocating deformation characteristics of the piezoelectric vibrator 1, so that the liquids in the two liquid boxes 6 can be fixedly pumped alternately.

[0039] In order to utilize the deformation characteristics of the piezoelectric vibrator 1, the deformation thrust of the piezoelectric vibrator 1 is triggered by liquid pressure to form a partition assembly 7 next to the liquid inlet 601 and the liquid outlet 602. The driving device 8 includes a main driving cylinder 801, a piston rod 802 is provided in the main driving cylinder 801, one end of the piston rod 802 extends to the side of the piezoelectric vibrator 1, and a spoke partition 803 is provided at one end of the piston rod 802. A return spring for pushing the piston rod 802 close to the piezoelectric vibrator 1 is provided in the main driving cylinder 801. In order to facilitate the interference with the flow of liquid and reduce unnecessary liquid loss, the partition assembly 7 includes a tubular block 701 for allowing liquid to pass through. A spoiler port is provided on the tubular block 701, and a spoiler 702 is slidably connected in the spoiler port. A sealing shell 703 is provided outside the spoiler 702. A vertical plate is fixed on the top of the spoiler 702, and an auxiliary driving cylinder 704 for controlling the movement of the spoiler 702 is fixed on the top of the vertical plate through a connecting rod. , a spoiler piston 705 is slidably connected in the auxiliary driving cylinder 704, and a driving liquid pipe connected to the main driving cylinder 801 is provided on the side wall of the auxiliary driving cylinder 704. The spoiler plate 702 can block the spoiler port on the tubular block 701, so that the passage of liquid at the spoiler port is blocked. When in use, the piezoelectric vibrator 1 is deformed to push the spoke partition 803, thereby moving the piston rod 802, and the piston rod 802 transmits the internal pressure to the auxiliary driving cylinder 704 connected thereto through the driving liquid pipe, and then controls the movement of the spoiler plate 702 through the spoiler piston 705 in the auxiliary driving cylinder 704, so as to achieve the purpose of blocking the corresponding guide port. Since the liquid inlet 601 and the liquid outlet 602 need to be opened alternately, the position of the driving liquid pipe also needs to be changed accordingly. Specifically, the spoiler plate 702 next to the liquid inlet 601 needs to be opened when liquid is inhaled, and the spoiler plate 702 next to the liquid outlet 602 needs to be opened when liquid is discharged.

[0040] In order to give the flexible tube 3 sufficient bending freedom, the flexible tube 3 includes a horizontal bending section and a vertical bending section. One end of the flexible tube 3 is provided with an extension section connected to the liquid box 6. When in use, the horizontal bending section and the vertical bending section cooperate with each other to prevent the pump body assembly 2 from being disturbed by external forces, and the extension section is in direct contact and communication with the liquid box 6.

[0041] In order to isolate the liquid, a sliding isolation block 9 is provided in the extension section, and the flexible tube 3 and the pump housing 202 are filled with fluid medium. The extension section is made of metal material that is inconvenient to bend. In this way, when in use, the liquid in the liquid pipeline does not contact the inside of the pump body assembly 2, thereby avoiding some interference factors, such as improper heat transfer and avoiding the substances contained in the liquid from contacting the pump body assembly 2.

[0042] In order to limit the bending of the flexible tube 3 and make the bending of the flexible tube 3 within a controllable range, the maintaining frame 5 includes a fixing plate 501, on which a clamping plate 502 is provided which fits the outside of the horizontal bending section and the vertical bending section. The clamping plates 502 are connected by connecting columns, and buffers are filled between the connecting columns and the horizontal bending section and the vertical bending section. The buffers are specifically required to support the flexible tube 3 and provide a certain limiting adhesion effect. The flexible tube 3 and the outer wall of the connecting column can be connected by filling with colloid or using a spring. When in use, the deformation of the flexible tube 3 can be positionally limited by the clamping plate 502 outside the bending part, and the buffer in the inner circle can absorb vibration and support the flexible tube 3 to maintain the overall bending shape of the flexible tube 3.

[0043] When in use, the present invention can separate the pump body assembly 2 and the liquid box 6 through the flexible tube 3. The horizontal bending section and the vertical bending section on the flexible tube 3 can allow the flexible tube 3 to deform within a limit, thereby not affecting the pump body assembly 2. The guide plate 603 in the liquid box 6 cooperates with the external partition assembly 7 to enable the liquid to flow in one direction, thereby not affecting the liquid pumping of the external pipeline, and can be used with the drive device 8 to trigger the partition assembly 7, and use the spoiler 702 to better pump the liquid. In this embodiment, the integration between components can be improved, the volume occupied by the components can be reduced, and the reciprocating deformation characteristics of the piezoelectric vibrator 1 can be reasonably utilized, so that the liquids in the two liquid boxes 6 can be fixedly pumped alternately. Embodiment 3

[0044] See also Figure 1-11As shown, a double-chamber parallel piezoelectric pump with a partition assembly at the inlet and outlet includes a pump body assembly 2 with a piezoelectric vibrator 1 inside, an infusion port 201 for allowing liquid to enter and exit is provided on the pump body assembly 2, the piezoelectric vibrator 1 requires an external driving system for voltage excitation to produce deformation, a flexible tube 3 is provided on the infusion port 201, a mounting frame 4 is fixed on the pump body assembly 2, one end of the flexible tube 3 is connected to a liquid box 6, there are two liquid boxes 6, and a liquid inlet 601 and a liquid outlet 602 are provided on both sides of the liquid box 6 through the liquid tube, a partition assembly 7 that can interfere with the flow of liquid is provided on the liquid tube, a guide plate 603 for guiding the flow direction of the liquid is provided in the liquid box 6, and the guide plate 603 is preferably a V-shaped plate. In order to avoid the guide plate 603 from affecting the flow of the liquid too much, the guide plate 603 is distributed near the inlet 6 01, the connecting part of the flexible tube 3 and the liquid box 6 is close to the liquid outlet 602, and a power connector is provided on one side of the pump body assembly 2 through a power cord. When in use, the power connector is connected to an external power source, and then the liquid tube is connected in series between the liquid pipelines. At this time, when the pump body assembly 2 is in operation, the piezoelectric vibrator 1 can be deformed when voltage is applied, and then the pressure in the cavity on one side of the piezoelectric vibrator 1 is changed, and then the liquid flow in the corresponding liquid box 6 is linked through the flexible tube 3 connected to the infusion port 201, and the guide plate 603 in the liquid box 6 can hinder the flow of the liquid. In the repeated pressure changes, the liquid can flow to the liquid outlet 602, thereby achieving the purpose of pumping the liquid, and the flexible tube 3 can isolate the vibration transmission to prevent the vibration at the pipeline components from affecting the pump body assembly 2.

[0045] In order to utilize the deformation characteristics of the reciprocating piezoelectric vibrator 1 to associate it with the inlet and outlet of the liquid, a driving device 8 for triggering the partition assembly 7 is provided on the pump body assembly 2. The pump body assembly 2 includes a pump casing 202, and an isolation plate 203 is fixed between the inner walls of the pump casing 202. The piezoelectric vibrator 1 is respectively arranged on the two side surfaces of the pump casing 202, and a supporting ring frame 204 for supporting the driving device 8 is fixed on the outer wall of the pump casing 202. When in use, since the piezoelectric vibrator 1 is located on both sides of the pump casing 202, the relative load of the piezoelectric vibrator 1 is concentrated on one side, thereby avoiding excessive load on the piezoelectric vibrator 1 and causing material fatigue. At the same time, a single piezoelectric vibrator 1 controls a separate fluid cavity, so that the liquid flow frequency during pumping is adjustable, and can be matched according to needs, so as to facilitate stable pumping of the liquid.

[0046] In order to utilize the deformation characteristics of the reciprocating piezoelectric vibrator 1 to associate the inlet and outlet of the liquid and reduce the component volume of the pump body assembly 2, a driving device 8 for triggering the partition assembly 7 is provided on the pump body assembly 2. The pump body assembly 2 includes a pump housing 202. The piezoelectric vibrator 1 is fixed in the pump housing 202, and the space of the pump housing 202 is divided into two cavities. Infusion ports 201 are respectively provided on the side walls of the corresponding cavity parts. When in use, the cavities on both sides of the piezoelectric vibrator 1 and the driving device 8 move periodically with each other, which can improve the integration between components, reduce the volume occupied by components, and reasonably utilize the reciprocating deformation characteristics of the piezoelectric vibrator 1, so that the liquids in the two liquid boxes 6 can be fixedly pumped alternately.

[0047] In order to utilize the deformation characteristics of the piezoelectric vibrator 1, the deformation thrust of the piezoelectric vibrator 1 is triggered by liquid pressure to form a partition assembly 7 next to the liquid inlet 601 and the liquid outlet 602. The driving device 8 includes a main driving cylinder 801, a piston rod 802 is provided in the main driving cylinder 801, one end of the piston rod 802 extends to the side of the piezoelectric vibrator 1, and a spoke partition 803 is provided at one end of the piston rod 802. A return spring for pushing the piston rod 802 close to the piezoelectric vibrator 1 is provided in the main driving cylinder 801. In order to facilitate the interference with the flow of liquid and reduce unnecessary liquid loss, the partition assembly 7 includes a tubular block 701 for allowing liquid to pass through. A spoiler port is provided on the tubular block 701, and a spoiler 702 is slidably connected in the spoiler port. A sealing shell 703 is provided outside the spoiler 702. A vertical plate is fixed on the top of the spoiler 702, and an auxiliary driving cylinder 704 for controlling the movement of the spoiler 702 is fixed on the top of the vertical plate through a connecting rod. , a spoiler piston 705 is slidably connected in the auxiliary driving cylinder 704, and a driving liquid pipe connected to the main driving cylinder 801 is provided on the side wall of the auxiliary driving cylinder 704. The spoiler plate 702 can block the spoiler port on the tubular block 701, so that the passage of liquid at the spoiler port is blocked. When in use, the piezoelectric vibrator 1 is deformed to push the spoke partition 803, thereby moving the piston rod 802, and the piston rod 802 transmits the internal pressure to the auxiliary driving cylinder 704 connected thereto through the driving liquid pipe, and then controls the movement of the spoiler plate 702 through the spoiler piston 705 in the auxiliary driving cylinder 704, so as to achieve the purpose of blocking the corresponding guide port. Since the liquid inlet 601 and the liquid outlet 602 need to be opened alternately, the position of the driving liquid pipe also needs to be changed accordingly. Specifically, the spoiler plate 702 next to the liquid inlet 601 needs to be opened when liquid is inhaled, and the spoiler plate 702 next to the liquid outlet 602 needs to be opened when liquid is discharged.

[0048] In order to give the flexible tube 3 sufficient bending freedom, the flexible tube 3 includes a horizontal bending section and a vertical bending section. One end of the flexible tube 3 is provided with an extension section connected to the liquid box 6. When in use, the horizontal bending section and the vertical bending section cooperate with each other to prevent the pump body assembly 2 from being disturbed by external forces, and the extension section is in direct contact and communication with the liquid box 6.

[0049] In order to isolate the liquid, a sliding isolation block 9 is provided in the extension section, and the flexible tube 3 and the pump housing 202 are filled with fluid medium. The extension section is made of metal material that is inconvenient to bend. In this way, when in use, the liquid in the liquid pipeline does not contact the inside of the pump body assembly 2, thereby avoiding some interference factors, such as improper heat transfer and avoiding the substances contained in the liquid from contacting the pump body assembly 2.

[0050] When in use, the present invention can separate the pump body assembly 2 and the liquid box 6 through the flexible tube 3. The horizontal bending section and the vertical bending section on the flexible tube 3 can allow the flexible tube 3 to deform within the limit, thereby not affecting the pump body assembly 2, and the guide plate 603 in the liquid box 6 cooperates with the external partition assembly 7 to enable the liquid to flow in one direction, thereby not affecting the liquid pumping of the external pipeline, and can be used with the driving device 8 to trigger the partition assembly 7, and use the spoiler 702 to better pump the liquid. In this embodiment, the unrestricted parts outside the flexible tube can be installed and used more freely. The flexible tube 3 is made of deformable material. The increase in freedom will cause the amount of liquid pumped to change. Specifically, when the resistance is large, the deformation of the flexible tube 3 increases.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dual-chamber parallel piezoelectric pump with a partition assembly at the inlet and outlet, comprising a pump body assembly (2) with a piezoelectric vibrator (1) disposed therein, characterized in that: The pump body assembly (2) is provided with an infusion port (201) for allowing liquid to enter and exit, the infusion port (201) is provided with a flexible tube (3), a mounting frame (4) is fixed to the pump body assembly (2), the mounting frame (4) is provided with a maintenance frame (5) for limiting the bending degree of the flexible tube (3), one end of the flexible tube (3) is connected to a liquid box (6), two liquid boxes (6) are provided, two sides of the liquid box (6) are provided with a liquid inlet (601) and a liquid outlet (602) through the liquid tube, a partition assembly (7) capable of interfering with the flow of liquid is provided on the liquid tube, a guide plate (603) for guiding the flow direction of liquid is provided in the liquid box (6), and one side of the pump body assembly (2) is provided with a power connector through a power cord.

2. The double-chamber parallel piezoelectric pump with a diaphragm assembly at the inlet and outlet according to claim 1, characterized in that: The pump body assembly (2) is provided with a driving device (8) for triggering the partition assembly (7), and the pump body assembly (2) comprises a pump housing (202), an isolation plate (203) is fixed between the inner walls of the pump housing (202), the piezoelectric vibrating plate (1) is respectively arranged on two side surfaces of the pump housing (202), and a supporting ring frame (204) for supporting the driving device (8) is fixed on the outer wall of the pump housing (202).

3. The double-chamber parallel piezoelectric pump with a diaphragm assembly at the inlet and outlet according to claim 1, characterized in that: The pump body assembly (2) is provided with a driving device (8) for triggering the partition assembly (7), and the pump body assembly (2) comprises a pump housing (202). The piezoelectric vibrating plate (1) is fixed in the pump housing (202) and divides the space of the pump housing (202) into two cavities, and the infusion ports (201) are respectively provided on the side walls of the corresponding cavity parts.

4. The double-chamber parallel piezoelectric pump with a partition assembly at the inlet and outlet according to claim 2 or 3, characterized in that: The driving device (8) comprises a main driving cylinder (801), a piston rod (802) is arranged inside the main driving cylinder (801), one end of the piston rod (802) extends to the side of the piezoelectric vibrating plate (1), a spoke partition (803) is arranged at one end of the piston rod (802), and a return spring is arranged inside the main driving cylinder (801) for pushing the piston rod (802) close to the piezoelectric vibrating plate (1).

5. The double-chamber parallel piezoelectric pump with a diaphragm assembly at the inlet and outlet according to claim 4, characterized in that: The partition assembly (7) comprises a tubular block (701) that allows liquid to pass through, the tubular block (701) being provided with a flow spoiler port, a flow spoiler (702) being slidably engaged in the flow spoiler port, a sealing shell (703) being provided outside the flow spoiler (702), a vertical plate being fixed to the top of the flow spoiler (702), a secondary drive cylinder (704) for controlling the movement of the flow spoiler (702) being fixed to the top of the vertical plate via a connecting rod, a flow spoiler piston (705) being slidably engaged in the secondary drive cylinder (704), and a drive liquid pipe being provided on the side wall of the secondary drive cylinder (704) and being connected to the main drive cylinder (801).

6. The double-chamber parallel piezoelectric pump with a diaphragm assembly at the inlet and outlet according to claim 2, characterized in that: The flexible tube (3) comprises a horizontal curved section and a vertical curved section, and one end of the flexible tube (3) is provided with an extension section connected to the liquid box (6).

7. The double-chamber parallel piezoelectric pump with a partition assembly at the inlet and outlet according to claim 6, characterized in that: A sliding isolation block (9) is provided in the extension section, and a fluid medium is filled in the flexible tube (3) and the pump casing (202).

8. The double-chamber parallel piezoelectric pump with a partition assembly at the inlet and outlet according to claim 7, characterized in that: The retaining frame (5) comprises a fixing plate (501), on which a clamping plate (502) is provided which fits the outside of the horizontal curved section and the vertical curved section, the clamping plates (502) are connected via a connecting column, and a buffer is filled between the connecting column and the horizontal curved section and the vertical curved section.

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