Liquid mechanical pump

Abstract

The invention discloses a liquid mechanical pump, which belongs to the technical field of mechanical pumps, and comprises a pump shell, a cylinder body is fixedly mounted on one side of the pump shell, a plurality of compression chambers are formed in one side of the cylinder body, pistons are slidably mounted in the compression chambers, a connecting rod is hinged to one side of each piston, a driving shaft and a crankshaft are rotatably mounted in the pump shell, and the connecting rod is hinged to the other side of each piston. The other end of the connecting rod is hinged to the outer side of the crankshaft; the driving shaft is in transmission connection with the crankshaft, a linkage mechanism is arranged on the outer side of the driving shaft, a first connecting disc is fixedly connected to the bottom end of the driving shaft, a power generator is fixedly installed in the pump shell, and a second driven disc is fixedly connected to an input shaft of the power generator. Through collaborative design of the multiple compression chambers and the piston, stable conveying of liquid is achieved, and load fluctuation of the driving motor is remarkably reduced; a mechanical energy storage mechanism is matched with a linkage mechanism, a generator is driven to generate electricity through inertia of a flywheel at the shutdown stage, and recycled energy is stored in an energy storage power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical pumps, and in particular to a liquid mechanical pump. Background Art

[0002] Current liquid delivery mechanical pumps generally use a single-piston or double-piston structure. During operation, the reciprocating motion of the piston generates periodic pulsations, leading to uneven output flow, pipeline vibration, and noise problems. This is especially true in scenarios where quietness is a high requirement, such as household appliances. For example, the patent with authorization announcement number CN 119712534 B discloses a liquid variable-capacity mechanical pump. A liquid variable-capacity mechanical pump includes a pump body, a diaphragm, an adjustment mechanism, and a drive mechanism. A first mounting cavity is provided on the pump body, and a heat insulation plate is provided in the first mounting cavity. The heat insulation plate and the diaphragm define the first mounting cavity into a liquid flow cavity, a regulating cavity, and a cooling cavity. External liquid passes through the liquid flow cavity, a regulating liquid is provided in the regulating cavity, and a cooling liquid is provided in the cooling cavity. The regulating mechanism is provided to introduce flowing external liquid into the liquid flow cavity. The above design and traditional structure require the additional installation of a hydraulic accumulator or buffer device to stabilize the fluid output, which not only increases the complexity of the system but also reduces the overall energy efficiency due to energy loss. Furthermore, when a conventional robotic arm is stopped, the residual mechanical kinetic energy of its moving parts cannot be effectively recovered. Instead, it is usually dissipated as useless heat through friction braking or natural decay. This energy waste is particularly prominent in applications with frequent start-stop cycles, resulting in poor overall energy utilization. Therefore, we propose a liquid mechanical pump to address this problem. Summary of the Invention

[0003] The object of the present invention is to provide a liquid mechanical pump to solve the problems raised in the above background technology.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A liquid mechanical pump comprises: a pump housing, a cylinder body fixedly mounted on one side of the pump housing, a plurality of compression chambers defined on one side of the cylinder body, pistons slidably mounted in the compression chambers, a connecting rod hingedly connected to one side of the pistons, a drive shaft and a crankshaft rotatably mounted in the pump housing, the other end of the connecting rod being hingedly connected to the outside of the crankshaft;

[0006] The drive shaft is connected to the crankshaft for transmission, a linkage mechanism is provided on the outside of the drive shaft, the bottom end of the drive shaft is fixedly connected to a first connecting plate, a generator is fixedly installed inside the pump housing, a second driven plate is fixedly connected to the input shaft of the generator, an energy storage mechanism is provided between the first connecting plate and the second driven plate, the energy storage mechanism includes: a flywheel, a fixed plate, a lifting plate and a connecting shaft, and the two ends of the connecting shaft are respectively fixedly connected to the first driven plate and the second connecting plate.

[0007] Preferably, the first connecting plate is adapted to the first driven plate, the second connecting plate is adapted to the second driven plate, and a connecting rod is fixedly installed in the lifting plate, the connecting rod is slidably connected in the fixed plate, the fixed plate is fixedly installed on the side wall of the pump housing, the top end of the connecting rod is fixedly connected to the connecting plate, and one side of the connecting plate is rotatably connected to a plurality of abutting wheels;

[0008] The connecting shaft is rotatably connected to the lifting plate, and an inner sleeve is fixedly sleeved on the outer side of the connecting shaft. An outer sleeve is fixedly connected to the inside of the flywheel. The outer sleeve is rotatably installed in the fixed plate and slidably sleeved on the outer side of the inner sleeve.

[0009] The lifting plates and the fixing plates are both provided in two groups.

[0010] Preferably, the linkage mechanism includes: a connecting ring, an L-rod, a lifting ring and a sliding frame, the sliding frame is slidably sleeved on the outside of the L-rod, and a linkage rod is hinged on the top of the sliding frame, the other end of the linkage rod is hinged on the inner side of the lifting ring, the lifting ring is slidably sleeved on the outside of the L-rod, the bottom end of the L-rod is fixedly connected to the outside of the connecting ring, an annular groove is provided on the outside of the lifting ring, the abutment wheel movably abuts against the inner wall of the annular groove, and the connecting ring is fixedly sleeved on the outside of the drive shaft.

[0011] Preferably, a driving gear is fixedly sleeved on the outer side of the drive shaft, a driven gear is fixedly connected to the top of the crankshaft, the driving gear is meshed with the driven gear, and a drive motor and an energy storage power supply are fixedly installed on the top of the pump housing, the energy storage power supply is connected to the drive motor and the generator signal, and the top of the drive shaft is fixedly connected to the output shaft of the drive motor.

[0012] Preferably, a microcontroller is provided on the top of the driving motor, a connecting spring is fixedly connected to the top of the lifting plate located below, a pressure sensor is fixedly connected to the bottom of the fixed plate located below, the pressure sensor is connected to the microcontroller signal, and the bottom end of the pressure sensor is fixedly connected to a pressure plate, and the top end of the connecting spring is fixedly connected to the bottom end of the pressure plate.

[0013] Preferably, a plurality of limiting strips are integrally formed on the outer side of the inner sleeve, a plurality of limiting grooves are opened inside the outer sleeve, and the limiting strips are slidably connected in the limiting grooves.

[0014] Preferably, one side of the multiple compression chambers is connected to an inlet pipe and an outlet pipe, the other end of the multiple inlet pipes is connected to the same liquid inlet pipe, and the other end of the multiple outlet pipes is connected to the same liquid outlet pipe, a first one-way valve is provided on the inlet pipe, and a second one-way valve is provided on the outlet pipe.

[0015] Preferably, a plurality of sealing rings are fixedly sleeved on the outer side of the piston, a fixed shaft is fixedly connected to the interior of the piston, one end of the connecting rod is rotatably connected to the outer side of the fixed shaft, and the other end of the connecting rod is fixedly connected to a bearing bush, which is sleeved on the outer side of the crankshaft;

[0016] The bottoms of the first connecting plate and the second connecting plate are both integrally formed with an arc-shaped protrusion, one end of the arc-shaped protrusion is provided with a recessed chamfer, and the tops of the first driven plate and the second driven plate are both provided with an arc-shaped slot, and the arc-shaped protrusion is adapted to the arc-shaped slot.

[0017] The beneficial effects of the present invention are:

[0018] 1. In the present invention, a liquid mechanical pump is described, which drives the drive shaft to rotate by starting the drive motor, and the drive shaft drives the crankshaft to rotate through the meshing of the driving gear and the driven gear. The crankshaft drives the multiple pistons to move back and forth by cooperating with the multiple connecting rods and bearings, so that the internal space of the multiple compression chambers alternately increases and decreases. When the space in the compression chamber increases, the liquid in the liquid inlet pipe enters the compression chamber through the inlet pipe and the first one-way valve. When the space in the compression chamber decreases, the liquid in the compression chamber is introduced into the liquid outlet pipe through the outlet pipe and the second one-way valve, thereby realizing liquid transportation. At the same time, the multiple compression chambers cooperate with the corresponding pistons to realize alternating liquid transportation, making the liquid transportation more stable and stabilizing the load of the drive motor.

[0019] 2. In the present invention, a liquid mechanical pump is described, which drives the connecting ring and the first connecting plate to rotate through the driving shaft, and the connecting ring drives multiple L rods and multiple sliding frames to perform circular motion. The sliding frames are thrown outward under the action of centrifugal force and drive the lifting ring to move upward through the linkage rod. The lifting ring drives the connecting plate and the connecting rod to move upward through the annular groove and the abutment wheel. The connecting rod drives the lifting plate to move upward, and the lifting plate drives the connecting shaft to move upward, thereby driving the first driven plate and the second connecting plate to move upward, so that the second connecting plate is separated from the second driven plate, and then the first driven plate is docked with the first connecting plate, so that the first connecting plate drives the first driven plate to rotate when it rotates, and the first driven plate drives the connecting shaft and the inner sleeve to rotate. The inner sleeve drives the outer sleeve and the flywheel to rotate through the cooperation of the limit bar and the limit groove, thereby storing the rotational kinetic energy of the mechanical arm in the flywheel;

[0020] 3. In the liquid mechanical pump of the present invention, when the drive motor is turned off, the drive shaft and the first connecting plate stop rotating, causing the connecting ring and the L-rod to stop rotating. The lifting ring and the lifting plate move downward under the action of gravity, thereby driving the connecting shaft, the first driven plate, and the second connecting plate to move forward, causing the first driven plate to disengage from the first connecting plate, and then causing the second connecting plate and the second driven plate to rotate. In this state, the flywheel drives the input shaft of the generator to rotate through the outer sleeve, the inner sleeve, the connecting shaft, the second connecting plate, and the second driven plate, thereby causing the generator to start generating electricity and store it in the energy storage power supply as a backup for the drive motor, thereby improving energy saving.

[0021] 4. In the present invention, the liquid mechanical pump achieves smooth liquid transportation through the coordinated design of multiple compression chambers and pistons, significantly reducing the load fluctuation of the drive motor; a mechanical energy storage mechanism is used in conjunction with a linkage mechanism, and the flywheel inertia drives the generator to generate electricity during the shutdown phase, and the recovered energy is stored in the energy storage power supply to provide backup power support for the drive motor; this dual energy management mechanism greatly improves energy efficiency and utilization, reduces external power supply requirements, and is particularly suitable for the field of household appliance parts with strict energy-saving requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a liquid mechanical pump proposed by the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of a liquid mechanical pump proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the internal three-dimensional structure of a liquid mechanical pump proposed by the present invention;

[0025] Figure 4 This is a partial three-dimensional structural diagram of a liquid mechanical pump proposed by the present invention;

[0026] Figure 5 This is a partial cross-sectional structural diagram of a liquid mechanical pump proposed by the present invention;

[0027] Figure 6 for Figure 5 A partial enlarged view of part A;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the linkage mechanism proposed in the present invention;

[0029] Figure 8 This is a schematic diagram of the split three-dimensional structure of the inner sleeve and the outer sleeve proposed in the present invention;

[0030] Figure 9 This is a schematic diagram of the three-dimensional structure of the drive shaft and cylinder body proposed in the present invention;

[0031] Figure 10 This is a schematic cross-sectional view of the drive shaft and cylinder body proposed in the present invention;

[0032] Figure 11 for Figure 10 A partial enlarged view of part B;

[0033] Figure 12 This is a schematic diagram of the three-dimensional structure of the crankshaft and piston proposed in the present invention;

[0034] Figure 13 This is a schematic diagram of the three-dimensional structure of the first connecting disk, the second connecting disk, the first driven disk and the second driven disk proposed in the present invention.

[0035] In the figure: 1. Pump housing; 2. Cylinder; 201. Inlet pipe; 202. First one-way valve; 203. Liquid inlet pipe; 204. Outlet pipe; 205. Second one-way valve; 206. Liquid outlet pipe; 207. Compression chamber; 3. Crankshaft; 301. Driven gear; 4. Piston; 401. Sealing ring; 402. Fixed shaft; 403. Connecting rod; 404. Bearing; 5. Driving motor; 501. Driving shaft; 502. Driving gear; 503. First connecting plate; 6. Linkage mechanism; 601. Lifting ring; 602. L-rod; 603. Connecting ring; 6 04. Sliding frame; 605. Linking rod; 7. Energy storage mechanism; 701. Fixed plate; 701. Fixed plate; 702. Outer sleeve; 7021. Limiting groove; 703. Flywheel; 704. Connecting shaft; 705. First driven disk; 706. Second connecting disk; 707. Lifting plate; 708. Connecting rod; 709. Connecting plate; 710. Abutting wheel; 711. Connecting spring; 712. Pressure sensor; 713. Inner sleeve; 7131. Limiting strip; 8. Microcontroller; 9. Generator; 901. Second driven disk; 10. Energy storage power supply. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figures 1-13 A liquid mechanical pump comprises: a pump housing 1, a cylinder body 2 fixedly mounted on one side of the pump housing 1, a plurality of compression chambers 207 defined on one side of the cylinder body 2, a piston 4 slidably mounted in the compression chamber 207, a connecting rod 403 hingedly connected to one side of the piston 4, a drive shaft 501 and a crankshaft 3 rotatably mounted in the pump housing 1, the other end of the connecting rod 403 being hingedly connected to the outer side of the crankshaft 3;

[0038] The drive shaft 501 is in transmission connection with the crankshaft 3. A linkage mechanism 6 is provided on the outside of the drive shaft 501. The bottom end of the drive shaft 501 is fixedly connected to the first connecting plate 503. A generator 9 is fixedly installed inside the pump housing 1. A second driven plate 901 is fixedly connected to the input shaft of the generator 9. An energy storage mechanism 7 is provided between the first connecting plate 503 and the second driven plate 901. The energy storage mechanism 7 includes: a flywheel 703, a fixed plate 701, a lifting plate 707 and a connecting shaft 704. The two ends of the connecting shaft 704 are respectively fixedly connected to the first driven plate 705 and the second connecting plate 706.

[0039] In this embodiment, the first connecting plate 503 is adapted to the first driven plate 705, the second connecting plate 706 is adapted to the second driven plate 901, and a connecting rod 708 is fixedly installed in the lifting plate 707. The connecting rod 708 is slidably connected in the fixed plate 701, and the fixed plate 701 is fixedly installed on the side wall of the pump housing 1. The top end of the connecting rod 708 is fixedly connected to the connecting plate 709, and one side of the connecting plate 709 is rotatably connected to a plurality of abutment wheels 710;

[0040] The connecting shaft 704 is rotatably connected to the lifting plate 707, and the outer side of the connecting shaft 704 is fixedly sleeved with an inner sleeve 713. The inner side of the flywheel 703 is fixedly connected with an outer sleeve 702. The outer sleeve 702 is rotatably installed in the fixed plate 701 and is slidably sleeved on the outer side of the inner sleeve 713.

[0041] The lifting plates 707 and the fixing plates 701 are each provided in two groups.

[0042] In this embodiment, the linkage mechanism 6 includes: a connecting ring 603, an L rod 602, a lifting ring 601 and a sliding frame 604. The sliding frame 604 is slidably sleeved on the outside of the L rod 602, and the top of the sliding frame 604 is hinged with a linkage rod 605. The other end of the linkage rod 605 is hinged on the inner side of the lifting ring 601. The lifting ring 601 is slidably sleeved on the outside of the L rod 602. The bottom end of the L rod 602 is fixedly connected to the outside of the connecting ring 603. An annular groove is provided on the outside of the lifting ring 601. The abutment wheel 710 movably abuts against the inner wall of the annular groove. The connecting ring 603 is fixedly sleeved on the outside of the drive shaft 501. The abutment wheel 710 is made of wear-resistant nylon material, which can reduce friction loss with the annular groove and extend its service life. The sliding frame 604 is embedded with a bronze bearing, which achieves low-friction sliding through grease lubrication.

[0043] In this embodiment, a driving gear 502 is fixedly sleeved on the outer side of the drive shaft 501, and the top of the crankshaft 3 is fixedly connected to the driven gear 301. The driving gear 502 is meshed with the driven gear 301, and the top of the pump housing 1 is fixedly installed with a drive motor 5 and an energy storage power supply 10. The energy storage power supply 10 is signal-connected to the drive motor 5 and the generator 9, and the top of the drive shaft 501 is fixedly connected to the output shaft of the drive motor 5.

[0044] In this embodiment, a microcontroller 8 is provided on the top of the driving motor 5, a connecting spring 711 is fixedly connected to the top of the lifting plate 707 located below, and a pressure sensor 712 is fixedly connected to the bottom of the fixed plate 701 located below. The pressure sensor 712 is connected to the microcontroller 8 signal, and the bottom end of the pressure sensor 712 is fixedly connected to a pressure plate, and the top end of the connecting spring 711 is fixedly connected to the bottom end of the pressure plate.

[0045] In this embodiment, a plurality of limit bars 7131 are integrally formed on the outer side of the inner sleeve 713, and a plurality of limit grooves 7021 are opened inside the outer sleeve 702. The limit bars 7131 are slidably connected in the limit grooves 7021. The inner sleeve 713 and the outer sleeve 702 are made of copper alloy, which has both anti-friction and corrosion resistance. The matching design of the limit bars 7131 and the limit grooves 7021 can ensure the coaxiality of the two and reduce vibration transmission. The limit bars 7131 and the limit grooves 7021 constitute a guiding mechanism, which allows axial displacement while limiting radial offset. The outer side of the limit bar 7131 and the inner wall of the limit groove 7021 are coated with polytetrafluoroethylene coating to achieve the purpose of reducing friction.

[0046] In this embodiment, one side of multiple compression chambers 207 is connected to an inlet pipe 201 and an outlet pipe 204, the other end of the multiple inlet pipes 201 is connected to the same liquid inlet pipe 203, and the other end of the multiple outlet pipes 204 is connected to the same liquid outlet pipe 206. A first one-way valve 202 is provided on the inlet pipe 201, and a second one-way valve 205 is provided on the outlet pipe 204. The first one-way valve 202 and the second one-way valve 205 both use acid and alkali resistant EPDM rubber valve balls, with an opening pressure difference of ≤0.02MPa and a closing leakage rate of <0.1ml / min, ensuring the reliability of one-way flow of the fluid; the inner wall of the cylinder body 2 is plated with a nickel-phosphorus alloy layer with a thickness of 50μm, and the surface roughness Ra≤0.4μm, which significantly reduces the liquid flow resistance.

[0047] In this embodiment, a plurality of sealing rings 401 are fixedly sleeved on the outer side of the piston 4, a fixed shaft 402 is fixedly connected to the interior of the piston 4, one end of a connecting rod 403 is rotatably connected to the outer side of the fixed shaft 402, and the other end of the connecting rod 403 is fixedly connected to a bearing 404, which is sleeved on the outer side of the crankshaft 3;

[0048] The bottoms of the first connecting plate 503 and the second connecting plate 706 are both integrally formed with arc-shaped protrusions, and one end of the arc-shaped protrusions is provided with a recessed rounded corner. The tops of the first driven plate 705 and the second driven plate 901 are both provided with arc-shaped slots, and the arc-shaped protrusions are adapted to the arc-shaped slots.

[0049] In this embodiment, the drive motor 5 is started to drive the drive shaft 501 to rotate, and the drive shaft 501 drives the crankshaft 3 to rotate through the engagement of the driving gear 502 and the driven gear 301. The crankshaft 3 drives the multiple pistons 4 to move back and forth left and right through the cooperation with the multiple connecting rods 403 and the bearing bushes 404, so that the internal space of the multiple compression chambers 207 alternately increases and decreases. When the space in the compression chamber 207 increases, the liquid in the liquid inlet pipe 203 enters the compression chamber 207 through the inlet pipe 201 and the first one-way valve 202. When the space in the compression chamber 207 decreases, the liquid in the compression chamber 207 is introduced into the liquid outlet pipe 206 through the outlet pipe 204 and the second one-way valve 205, thereby realizing liquid transportation. At the same time, the multiple compression chambers 207 cooperate with the corresponding pistons 4 to realize alternating liquid transportation, making the liquid transportation more stable and the load of the drive motor 5 more stable.

[0050] The driving shaft 501 drives the connecting ring 603 and the first connecting plate 503 to rotate, and the connecting ring 603 drives multiple L rods 602 and multiple sliding frames 604 to perform circular motion. The sliding frames 604 are thrown outward under the action of centrifugal force and drive the lifting ring 601 to move upward through the linkage rod 605. The lifting ring 601 drives the connecting plate 709 and the connecting rod 708 to move upward through the abutment of the annular groove and the abutment wheel 710. The connecting rod 708 drives the lifting plate 707 to move upward, and the lifting plate 707 drives the connecting shaft 704 to move upward, thereby driving the first The driven disc 705 and the second connecting disc 706 move upward, causing the second connecting disc 706 to disengage from the second driven disc 901. Subsequently, the first driven disc 705 docks with the first connecting disc 503, causing the first connecting disc 503 to rotate when it rotates. The first driven disc 705 then drives the connecting shaft 704 and the inner sleeve 713 to rotate. The inner sleeve 713, through the engagement of the limiting strip 7131 and the limiting groove 7021, drives the outer sleeve 702 and the flywheel 703 to rotate, thereby storing the rotational kinetic energy of the robotic arm in the flywheel 703.

[0051] When the drive motor 5 is turned off, the drive shaft 501 and the first connecting plate 503 stop rotating, causing the connecting ring 603 and the L-rod 602 to stop rotating. The lifting ring 601 and the lifting plate 707 move downward under the action of gravity, thereby driving the connecting shaft 704, the first driven plate 705 and the second connecting plate 706 to move forward, causing the first driven plate 705 to disengage from the first connecting plate 503, and then causing the second connecting plate 706 and the second driven plate 901 to rotate. In this state, the flywheel 703 drives the input shaft of the generator 9 to rotate through the outer sleeve 702, the inner sleeve 713, the connecting shaft 704, the second connecting plate 706 and the second driven plate 901, thereby causing the generator 9 to start generating electricity and store the electricity in the energy storage power supply 10 as a backup for the drive motor 5, thereby improving energy saving.

[0052] The coordinated design of the multiple compression chambers 207 and the piston 4 enables smooth liquid delivery, significantly reducing load fluctuations on the drive motor 5. A mechanical energy storage mechanism 7 is used in conjunction with a linkage mechanism 6, and during the shutdown phase, the flywheel 703 inertia drives the generator 9 to generate electricity, and the recovered energy is stored in the energy storage power supply to provide backup power support for the drive motor 5. This dual energy management mechanism significantly improves energy efficiency and reduces external power supply requirements, and is particularly suitable for the field of household appliance parts with strict energy-saving requirements.

[0053] The above is a detailed introduction to the liquid mechanical pump provided by the present invention. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be pointed out that, for those skilled in the art, several improvements and modifications may be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A liquid mechanical pump, characterized in that: include: A pump housing (1), wherein a cylinder body (2) is fixedly mounted on one side of the pump housing (1), a plurality of compression chambers (207) are provided on one side of the cylinder body (2), a piston (4) is slidably mounted in the compression chamber (207), a connecting rod (403) is hingedly mounted on one side of the piston (4), a drive shaft (501) and a crankshaft (3) are rotatably mounted in the pump housing (1), and the other end of the connecting rod (403) is hingedly mounted on the outside of the crankshaft (3); The drive shaft (501) is in transmission connection with the crankshaft (3); a linkage mechanism (6) is provided on the outer side of the drive shaft (501); a first connecting disc (503) is fixedly connected to the bottom end of the drive shaft (501); a generator (9) is fixedly installed inside the pump housing (1); a second driven disc (901) is fixedly connected to the input shaft of the generator (9); an energy storage mechanism (7) is provided between the first connecting disc (503) and the second driven disc (901); the energy storage mechanism (7) comprises: a flywheel (703), a fixed plate (701), a lifting plate (707) and a connecting shaft (704); and the two ends of the connecting shaft (704) are fixedly connected to the first driven disc (705) and the second connecting disc (706).

2. The liquid mechanical pump according to claim 1, characterized in that The first connecting plate (503) is adapted to the first driven plate (705), the second connecting plate (706) is adapted to the second driven plate (901), and a connecting rod (708) is fixedly installed in the lifting plate (707), the connecting rod (708) is slidably connected in the fixed plate (701), the fixed plate (701) is fixedly installed on the side wall of the pump housing (1), the top end of the connecting rod (708) is fixedly connected to a connecting plate (709), and one side of the connecting plate (709) is rotatably connected to a plurality of abutting wheels (710); The connecting shaft (704) is rotatably connected to the lifting plate (707), and the outer side of the connecting shaft (704) is fixedly sleeved with an inner sleeve (713), the inner side of the flywheel (703) is fixedly connected with an outer sleeve (702), the outer sleeve (702) is rotatably installed in the fixed plate (701), and the outer sleeve (702) is slidably sleeved on the outer side of the inner sleeve (713); The lifting plates (707) and the fixing plates (701) are both provided in two groups.

3. The liquid mechanical pump according to claim 2, characterized in that: The linkage mechanism (6) comprises: a connecting ring (603), an L-rod (602), a lifting ring (601) and a sliding frame (604); the sliding frame (604) is slidably sleeved on the outer side of the L-rod (602); and a linkage rod (605) is hinged on the top of the sliding frame (604); the other end of the linkage rod (605) is hinged on the inner side of the lifting ring (601); the lifting ring (601) is slidably sleeved on the outer side of the L-rod (602); the bottom end of the L-rod (602) is fixedly connected to the outer side of the connecting ring (603); an annular groove is provided on the outer side of the lifting ring (601); the abutting wheel (710) movably abuts against the inner wall of the annular groove; and the connecting ring (603) is fixedly sleeved on the outer side of the driving shaft (501).

4. The liquid mechanical pump according to claim 1, characterized in that A driving gear (502) is fixedly sleeved on the outer side of the driving shaft (501), a driven gear (301) is fixedly connected to the top end of the crankshaft (3), the driving gear (502) is meshed with the driven gear (301), and a driving motor (5) and an energy storage power supply (10) are fixedly installed on the top of the pump housing (1), the energy storage power supply (10) is signal-connected to the driving motor (5) and the generator (9), and the top end of the driving shaft (501) is fixedly connected to the output shaft of the driving motor (5).

5. The liquid mechanical pump according to claim 4, characterized in that: A microcontroller (8) is provided on the top of the driving motor (5), a connecting spring (711) is fixedly connected to the top of the lifting plate (707) located below, and a pressure sensor (712) is fixedly connected to the bottom of the fixed plate (701) located below. The pressure sensor (712) is connected to the microcontroller (8) for signal connection, and the bottom end of the pressure sensor (712) is fixedly connected to a pressure plate, and the top end of the connecting spring (711) is fixedly connected to the bottom end of the pressure plate.

6. The liquid mechanical pump according to claim 2, characterized in that: The outer side of the inner sleeve (713) is integrally formed with a plurality of limiting strips (7131), and the interior of the outer sleeve (702) is provided with a plurality of limiting grooves (7021), and the limiting strips (7131) are slidably connected in the limiting grooves (7021).

7. The liquid mechanical pump according to claim 1, characterized in that: One side of each of the plurality of compression chambers (207) is connected to an inlet pipe (201) and an outlet pipe (204); the other ends of the plurality of inlet pipes (201) are connected to a same liquid inlet pipe (203); the other ends of the plurality of outlet pipes (204) are connected to a same liquid outlet pipe (206); a first one-way valve (202) is provided on the inlet pipe (201), and a second one-way valve (205) is provided on the outlet pipe (204).

8. The liquid mechanical pump according to claim 1, characterized in that The outer side of the piston (4) is fixedly sleeved with a plurality of sealing rings (401); the interior of the piston (4) is fixedly connected to a fixed shaft (402); one end of the connecting rod (403) is rotatably connected to the outer side of the fixed shaft (402); the other end of the connecting rod (403) is fixedly connected to a bearing bush (404); and the bearing bush (404) is sleeved on the outer side of the crankshaft (3); The bottoms of the first connecting plate (503) and the second connecting plate (706) are both integrally formed with arc-shaped protrusions, and one end of the arc-shaped protrusions is provided with a recessed rounded corner. The tops of the first driven plate (705) and the second driven plate (901) are both provided with arc-shaped slots, and the arc-shaped protrusions are adapted to the arc-shaped slots.

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