An eccentric volumetric pump with overpressure protection

Abstract

The application discloses an eccentric volumetric pump with overpressure protection, which comprises a volumetric pump motor, a bypass adjusting mechanism, a bidirectional control mechanism, a cooling mechanism, an expansion mechanism, a sedimentation mechanism and a pump body, wherein the volumetric pump motor and the pump body are fixedly connected, the volumetric pump motor and the pump body are in transmission connection, the bypass adjusting mechanism is communicated with the pump body, the bypass adjusting mechanism is communicated with the bidirectional control mechanism, the bidirectional control mechanism is fixedly connected with the pump body, the bidirectional control mechanism is communicated with the pump body, the cooling mechanism is fixedly connected with the pump body, the expansion mechanism is communicated with the bidirectional control mechanism, the sedimentation mechanism is fixedly connected with the pump body, the sedimentation mechanism is communicated with the bidirectional control mechanism, the bypass adjusting mechanism allows fluid bypass to reduce pressure, the bidirectional control mechanism controls the direction and speed of in and out, the cooling mechanism prevents overheating, the expansion mechanism reduces internal pressure, and the sedimentation mechanism separates the mass of impurities, thereby preventing blockage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of volume pumps, in particular to an eccentric volume pump with overpressure protection. BACKGROUND

[0002] As a kind of efficient fluid conveying equipment, eccentric volume pump is widely used in chemical industry, pharmaceutical industry, water treatment and other industries due to its unique design and working principle. This kind of pump changes the fluid volume by the eccentric distance between pump body and rotor to realize efficient fluid conveying. Due to its effective treatment of solid particle-containing medium and strong adaptability, it has been more and more widely used in industrial field in recent years.

[0003] The existing eccentric volume pump has been widely used in the market. The existing technology mainly focuses on the basic fluid conveying function. The general eccentric volume pump includes pump body, rotor, blade and inlet and outlet valve. These components work together to change the volume inside the pump to convey fluid. The eccentric movement of the rotor promotes the sliding of the blade in the rotor groove to form a closed volume to drive the fluid to be sucked from the inlet and pressed to the outlet.

[0004] For the above-mentioned related technology, although the traditional eccentric volume pump can achieve the purpose of conveying, there are still deficiencies. The traditional pump usually lacks effective overpressure protection mechanism. Once the problems of too fast fluid flow rate, inlet and outlet blockage or system temperature being too high occur, the pump body may be overpressured, which may cause damage. Therefore, the technical personnel in the field provide an eccentric volume pump with overpressure protection to solve the problems raised in the above background. SUMMARY

[0005] The purpose of the present application is to provide an eccentric volume pump with overpressure protection to solve the problems raised in the above background.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme:

[0007] The volume pump includes a volume pump motor, a bypass adjusting mechanism, a bidirectional control mechanism, a cooling mechanism, an expansion mechanism, a settling mechanism and a pump body. The volume pump motor and the pump body are tightly connected. The volume pump motor and the pump body are in transmission connection. The bypass adjusting mechanism and the pump body are in communication. The bypass adjusting mechanism and the bidirectional control mechanism are in communication. The bidirectional control mechanism and the pump body are tightly connected. The bidirectional control mechanism and the pump body are in communication. The cooling mechanism and the pump body are tightly connected. The expansion mechanism and the bidirectional control mechanism are in communication. The settling mechanism and the pump body are tightly connected. The settling mechanism and the bidirectional control mechanism are in communication.

[0008] By adopting the above technical scheme, the volumetric pump motor is directly connected with the pump body as a power source to provide necessary power to drive the pump to work, the bypass adjustment mechanism is connected with the pump body, and when detecting high pressure, it can be automatically opened to allow part of the fluid to bypass, thereby reducing the pressure in the main flow channel, the bidirectional control mechanism is connected with the bypass adjustment mechanism and the pump body to control the direction and speed of fluid to maintain fluid dynamic balance, the cooling mechanism is fixed to the pump body to prevent pressure increase caused by overheating by controlling the temperature of the fluid, the expansion mechanism is connected with the bidirectional control mechanism to process fluid expansion caused by temperature changes or other factors to reduce internal pressure, and the sedimentation mechanism is also fixed to the pump body to separate the mass content of impurities from the fluid to prevent blockage and wear caused by impurity accumulation. Not only optimizes the performance of the pump, improves the safety and stability of the operation, but also effectively prolongs the service life of the equipment, especially suitable for strict industrial applications such as chemical industry, pharmaceutical industry and water treatment, through the cooperative work of these integrated mechanisms, the pump can maintain high efficiency under various working conditions, and automatically adjust and protect the system to prevent possible overload or damage.

[0009] Further, the pump body includes a pump shell, an outer rotor, an inner rotor, a piston assembly, a transmission rod, a transmission gear, a gear rod, and a mounting block, the pump shell and the outer rotor are fixedly connected, the outer rotor and the inner rotor are rotatably connected, the piston assembly and the pump shell are fixedly connected, the gear rod and the volumetric pump motor are fixedly connected, the gear rod and the volumetric pump motor are in transmission connection, the volumetric pump motor and the mounting block are fixedly connected, the mounting block and the pump shell are fixedly connected, the gear rod and the transmission gear are in transmission connection, the transmission gear and the transmission rod are fixedly connected, the transmission rod and the inner rotor are in transmission connection, the inner rotor is located at an end of the transmission rod away from the transmission gear, the inner rotor and the transmission rod are rotatably connected, and the transmission rod and the piston assembly are rotatably connected.

[0010] By adopting the above technical scheme, the pump body structure includes a pump shell, an outer rotor, an inner rotor, a piston assembly, a transmission rod, a transmission gear, a gear rod, and a mounting block. The cooperative work of these components ensures the high performance and reliability of the pump. The volumetric pump motor serves as the main power source, is fastened to and in transmission connection with the gear rod, and provides the necessary rotary power. The gear rod transmits power to the transmission rod through the transmission gear, and the transmission rod transmits power to the inner rotor. The inner rotor is in rotary connection with the outer rotor and is located in the pump shell. The outer rotor is fixed to the pump shell, while the inner rotor rotates with the transmission rod to produce eccentric motion. The piston assembly is in rotary connection with the transmission rod and is driven by the eccentric motion of the inner rotor, so that the piston reciprocates in the pump shell to change the volume inside the pump. After entering the pump body, the fluid is guided into the spiral inner cavity of the outer rotor. Due to the rotation of the spiral inner cavity, the fluid is effectively pushed along the spiral path. Through continuous spiral motion, the fluid is sent from the pump inlet to the outlet, thereby sucking and discharging the fluid. The mounting block connects the volumetric pump motor with the pump shell, ensuring the stability and durability of the entire mechanical structure. When the volumetric pump motor starts, power is transmitted to the transmission rod and the inner rotor through the gear rod and the transmission gear. The rotation of the inner rotor causes the piston assembly to reciprocate in the pump shell. This reciprocating motion realizes the suction and discharge of fluid by changing the volume inside the pump. The fluid flow is driven by the pressure difference generated by the eccentric rotor, thereby completing efficient fluid delivery. Through precise power transmission, the pump can efficiently deliver fluid, especially for applications that require continuous or intermittent high-pressure fluid delivery. The pump design takes into account the ability to handle solid particles or high-viscosity media, and can perform well in complex industrial applications.

[0011] Further, the piston assembly includes a piston cavity shell, a piston plate, a connecting plate, a sliding plate, and a sliding rod. The piston cavity shell is fastened to the pump shell, and a flow limiting cavity is provided on the piston cavity shell. The flow limiting cavity is semi-lunar in shape, and the flow limiting cavity is a slanted sliding cavity with a gradually narrowing diameter from the connecting plate to the piston plate. The piston plate is in abutment with the piston cavity shell and the flow limiting cavity. The piston plate is semi-lunar in shape and has a slanted sliding block with a gradually narrowing outer edge. The connecting plate is fastened to and in transmission connection with the piston plate. The sliding rod is fastened to and in transmission connection with the connecting plate. The sliding rod is in sliding connection with the piston cavity shell. The piston cavity shell is provided with a sliding groove, and the sliding rod is in sliding connection with the sliding groove. The sliding rod is fastened to and in transmission connection with the sliding plate. The sliding plate is in sliding connection with the mounting block. The mounting block is provided with a moving groove, and the sliding plate is in sliding connection with the moving groove. The gear rod is in transmission connection with the sliding rod, and the gear rod is provided with a transmission groove. The transmission groove is in the shape of a slanted ring groove, and the sliding rod is in abutment with the transmission groove.

[0012] By adopting the above technical scheme, the plug assembly is designed to accurately control the pressure and flow of the fluid, and the internal volume is adjusted through a complex and delicate mechanical structure, so that the pump can work effectively under various working conditions. The piston assembly includes a piston cavity shell, a piston plate, a connecting plate, a sliding plate and a sliding rod, each component is precisely designed to ensure efficient and stable operation. The piston cavity shell is fixed inside the pump shell and is provided with a specially designed flow limiting cavity. The cavity is semilunar in shape and the diameter gradually decreases to form a slanted sliding cavity. The piston plate tightly abuts the piston cavity shell and matches the shape of the flow limiting cavity. The connecting plate fixedly connects the piston plate and the sliding rod, and is connected with the power output of the volumetric pump motor through the gear rod to ensure the transmission of power. The sliding rod moves in the sliding groove in the piston cavity shell to control the position of the piston plate. The sliding plate is slidably connected with the moving groove in the mounting block. With the rotation of the gear rod, the rotational power is converted into linear motion of the sliding rod through the design of the transmission groove (oblique ring groove), thereby driving the piston plate to reciprocate in the flow limiting cavity. When the volumetric pump motor starts, the sliding rod and the piston plate connected therewith reciprocate in the flow limiting cavity through the power transmission of the gear rod. This movement changes the fluid volume inside the pump to generate the necessary pressure to suck and discharge the fluid. The special design of the flow limiting cavity (semilunar shape and slanted sliding cavity) optimizes the fluid flow path, reduces flow resistance and energy loss, and improves the efficiency of the pump. The design of the piston assembly allows precise control of the fluid dynamics inside the pump, adapts to different working conditions and requirements, reduces energy consumption and improves the overall efficiency of the pump by effectively adjusting the internal volume and optimizing the fluid flow path.

[0013] Further, the bypass adjusting mechanism includes a pressure sensor, a bypass pipe, a first connecting block, a first electromagnetic valve block, a first energizing coil, a first elastic member, a second electromagnetic valve block, a second energizing coil, a second elastic member, a first pressure sliding rod, a second pressure sliding rod and a second connecting block. The bypass pipe and the first connecting block are in communication. The bypass pipe and the second connecting block are in communication. The first electromagnetic valve block and the first elastic member are fixedly connected. The first electromagnetic valve block and the first pressure sliding rod are fixedly connected. The first pressure sliding rod and the first connecting block are slidably connected. The first energizing coil and the first connecting block are fixedly connected. The first energizing coil and the first elastic member are magnetically connected. The first energizing coil and the first electromagnetic valve block are magnetically connected. The second electromagnetic valve block and the second elastic member are fixedly connected. The second electromagnetic valve block and the second pressure sliding rod are fixedly connected. The second pressure sliding rod and the second connecting block are slidably connected. The second energizing coil and the second connecting block are fixedly connected. The second energizing coil and the second elastic member are magnetically connected. The second energizing coil and the second electromagnetic valve block are magnetically connected. The first connecting block and the bidirectional control mechanism are in communication. The second connecting block and the pump shell are in communication. The pressure sensor and the second electromagnetic valve block are fixedly connected.

[0014] By adopting the above technical scheme, the bypass adjusting mechanism is a key component, aiming to effectively control and manage the pressure in the pump to prevent overpressure, the mechanism includes a pressure sensor, a bypass pipe, two sets of electromagnetic valve blocks (a first electromagnetic valve block and a second electromagnetic valve block), and corresponding connecting pieces and control coils, the pressure sensor monitors the pressure in the pump and activates the electromagnetic valve when the pressure exceeds the preset safety threshold, each electromagnetic valve block is composed of an electromagnetic valve, an energized coil, an elastic piece, and a sliding rod, these components are integrated through magnetic and mechanical connection methods to ensure rapid and accurate response, when the pressure sensor detects excessively high pressure, it sends a signal to the energized coil to activate the first electromagnetic valve block and the second electromagnetic valve block, after activation, the energized coil generates a magnetic force that causes the elastic piece connected to it to deform, thereby pushing the sliding rod to move and open or adjust the valve of the bypass pipe, in this way, part of the fluid bypasses the pump through the bypass pipe, thereby reducing the pressure in the pump, the movement of the first pressure sliding rod and the second pressure sliding rod allows detailed adjustment of the bypass flow to accurately control the pressure to a safe level, overpressure protection automatically reduces pressure when fluid pressure is excessively high, protecting the pump body and pipeline system from damage, automatic adjustment automatically adjusts the bypass flow according to real-time pressure changes without the need for manual intervention, improving stability, by reducing pressure fluctuations in the system, improving the stability and reliability of the entire pump system, and improving efficiency: by maintaining the pressure in the pump within the optimal operating range, ensuring the operating efficiency of the pump, providing an efficient and reliable overpressure protection solution that effectively avoids equipment failure and operational interruptions caused by abnormal pressure.

[0015] Further, the bidirectional control mechanism includes flow rate sensors, a first flow gear, a second flow gear, a third flow gear, a fourth flow gear, an inlet valve, an outlet valve, a control block, an inlet motor, and an outlet motor, two flow rate sensors are provided, one flow rate sensor is fixedly connected with the inlet valve, and the other flow rate sensor is fixedly connected with the outlet valve, the first flow gear is rotatably connected with the control block, the first flow gear is in transmission connection with the second flow gear, the inlet motor is fixedly connected with the control block, the inlet motor is in transmission connection with the first flow gear, the inlet valve is in communication with the control block, the first connecting block is in communication with the inlet valve, the third flow gear is rotatably connected with the control block, the third flow gear is in transmission connection with the fourth flow gear, the outlet motor is fixedly connected with the control block, the outlet motor is in transmission connection with the third flow gear, the outlet valve is in communication with the control block, the first connecting block is in communication with the inlet valve, the inlet valve is in communication with the settling mechanism, the expansion mechanism is fixedly connected with the outlet valve, the flow rate sensors are electrically connected with the inlet motor, and the flow rate sensors are electrically connected with the outlet motor.

[0016] By adopting the above technical scheme, the flow gear, the motor and the valve system cooperate with the flow rate sensor to dynamically adjust the inflow and outflow of the fluid, two flow rate sensors are connected to the inlet valve and the outlet valve respectively to monitor the flow rate of the inflow and outflow of the pump body in real time, the inlet motor drives the first flow gear, the gear is connected with the second flow gear to realize force transmission, the opening degree of the inlet valve is adjusted to control the flow rate of the inflow of the pump body, the outlet motor drives the third flow gear, the opening degree of the outlet valve is adjusted through the connection with the fourth flow gear to control the discharge speed of the fluid, the inlet valve and the outlet valve are connected with the respective flow gear sets to automatically adjust the opening and closing of the valves according to the data feedback by the sensor, so as to accurately control the flow rate and pressure of the fluid, the control block serves as a central node to connect all power and control elements to ensure the correct flow direction of the fluid, and the power adjustment of the inlet and outlet is unified and coordinated, the flow rate is accurately controlled according to the real-time demand through valve adjustment, the operation efficiency of the pump is optimized, the flow rate is automatically adjusted to prevent the system pressure from being too high or too low due to excessive flow, thereby avoiding mechanical wear and tear and potential failure, the inflow and outflow speed of the fluid is optimized to reduce energy waste and improve overall energy efficiency, the real-time feedback of the flow rate sensor and the rapid response of the motor gear system ensure rapid adjustment when the fluid demand changes to maintain system stability, the bidirectional control mechanism effectively manages the fluid dynamics in the pump by integrating efficient motors, precise gear transmission systems and intelligent flow rate sensors to improve the flexibility of operation and the reliability of the pump, which is particularly critical for the chemical, pharmaceutical and water treatment industries that require efficient fluid management.

[0017] Further, the cooling mechanism includes a temperature sensor, a heat sink, a cooling fan, a circulating pump, an inlet pipe, an outlet pipe and a liquid storage tank, the temperature sensor is fixedly connected with the pump shell, the heat sink is fixedly connected with the liquid storage tank, the cooling fan is fixedly connected with the liquid storage tank, the circulating pump is fixedly connected with the liquid storage tank, the liquid storage tank and the circulating pump are in communication, the circulating pump and the inlet pipe are in communication, the outlet pipe and the circulating pump are in communication, the outlet pipe and the pump shell are in communication, the inlet pipe and the pump shell are in communication, the pump shell is provided with a flow cavity, the outlet pipe and the flow cavity are in communication, the inlet pipe and the flow cavity are in communication, and the flow cavity is spiral-shaped.

[0018] By adopting the above technical scheme, the cooling mechanism is designed to effectively manage and control the temperature inside the positive displacement pump to prevent overheating and maintain the high efficiency of the pump, which is composed of a temperature sensor, a heat sink, a cooling fan, a circulating pump, an inlet pipe, an outlet pipe and a liquid tank, integrating a complete cooling circulation system, the temperature sensor is installed on the pump shell to monitor the temperature inside the pump in real time, when the sensor detects that the temperature exceeds the preset threshold, the circulating pump and the cooling fan will be activated, the circulating pump pushes the cooling liquid in the liquid tank to flow into the spiral flow cavity in the pump shell through the inlet pipe, after the cooling liquid absorbs heat, it returns to the liquid tank through the outlet pipe, the heat sink is attached to the liquid tank to help the cooling liquid dissipate heat, and the cooling fan enhances the heat dissipation effect and accelerates the heat exchange process, the cooling mechanism utilizes the heat capacity characteristics of the cooling liquid in the closed circulation cooling system, through the action of the circulating pump, the heat generated inside the pump is transferred to the heat sink and the fan through the cooling liquid, realizing rapid heat dissipation, the design of the spiral flow cavity increases the surface area of the cooling liquid in contact with the pump shell, improves the heat exchange efficiency, and makes the heat be absorbed and carried away by the cooling liquid faster, the cooling mechanism effectively prevents the overheating of the equipment caused by long-time operation or high-load operation, protects the internal components of the pump and prolongs the service life of the equipment, by maintaining the equipment operating at the optimal working temperature, the running efficiency and reliability of the pump are guaranteed, the performance degradation caused by thermal effects is avoided, the automatic start and stop of the system reduces manual intervention, reduces the operation complexity and cost, and the cooling mechanism provides an efficient and automated temperature management solution for the eccentric positive displacement pump, so that the pump can maintain optimal performance even in demanding industrial environments.

[0019] Further, the expansion mechanism includes an expansion pipe, an elastic diaphragm and an expansion ring clamp, the expansion pipe is fixedly connected with the outlet valve, the expansion pipe and the outlet valve are communicated, and the expansion pipe and the control block are communicated.

[0020] By adopting the above technical scheme, the expansion mechanism aims to manage and regulate the volume expansion caused by the temperature change of the fluid, thereby preventing damage to the pump due to the increase in internal pressure. The mechanism is composed of an expansion pipe, an elastic diaphragm, and an expansion ring clamp. The expansion pipe is connected with the outlet valve and the control block to ensure smooth flow of the fluid and pressure regulation. The expansion pipe is tightly connected with the outlet valve at one end and communicates with it to ensure that the fluid can flow to the outlet through the expansion pipe. The other end communicates with the control block. The elastic diaphragm is installed inside the expansion pipe and is fixed around by the expansion ring clamp. The expansion ring clamp ensures that the expansion pipe maintains structural integrity when subjected to high pressure without breaking or excessive expansion. When the fluid in the pump expands in volume due to temperature rise, the increased internal pressure will push the elastic diaphragm to expand outward of the expansion pipe. This expansion allows the internal volume of the expansion pipe to increase, thereby absorbing excess pressure and avoiding direct transmission to the pump body or outlet valve, reducing the risk of equipment damage caused by excessive pressure. The expansion mechanism effectively manages the fluid expansion caused by temperature change by providing additional expansion space, preventing overpressure, reducing the sudden increase in internal pressure, protecting the pump body and other sensitive components from pressure fluctuations, prolonging the service life of the equipment, maintaining the internal pressure of the pump within a safe range, and enhancing the stability and reliability of the entire system.

[0021] Further, the sedimentation mechanism includes a filter screen, a sedimentation shell, a sedimentation inner shell, a centrifugal blade, a centrifugal motor, a conductivity test head, and a sedimentation hydraulic cylinder. The filter screen and the sedimentation shell are tightly connected, the sedimentation shell and the sedimentation inner shell are slidingly connected, the centrifugal motor and the sedimentation inner shell are tightly connected, the centrifugal motor and the centrifugal blade are drivingly connected, the sedimentation hydraulic cylinder and the volume pump motor are tightly connected, the conductivity test head is tightly connected with the sedimentation shell, the conductivity test head and the centrifugal motor are tightly connected, and the centrifugal motor and the inlet motor are electrically connected.

[0022] By adopting the technical scheme, the mass of impurities in the fluid is effectively removed by the method of centrifugal separation, so as to protect the pump body and improve the efficiency and service life of the pump, the mechanism comprises a filter screen, a sedimentation outer shell, a sedimentation inner shell, a centrifugal blade, a centrifugal motor, a conductivity test head and a sedimentation hydraulic cylinder, and constitutes a high-efficiency sedimentation system, the filter screen is installed at the outlet of the sedimentation outer shell, captures larger solid particles and impurities, the fluid enters the sedimentation inner shell, the centrifugal motor drives the centrifugal blade to rotate, the particles are separated from the fluid by centrifugal force and pushed to the edge of the sedimentation outer shell, the sedimentation hydraulic cylinder controls the position or pressure of the sedimentation inner shell, which helps to concentrate and remove the settled solid impurities, the conductivity test head is installed in the sedimentation outer shell and monitors the conductivity of the fluid, which indirectly reflects the purity and impurity content of the fluid, when the fluid enters the sedimentation mechanism, the fluid passing through the filter screen first removes larger impurities, then enters the centrifugal inner shell driven by the centrifugal motor, under the action of the high-speed rotating centrifugal blade, the heavier impurities are thrown to the edge of the sedimentation outer shell by centrifugal force, and the cleaner fluid is kept on the axis of the inner shell, in this way, the mass of solid particles and other impurities in the fluid is reduced by the physical separation method, the monitoring result of the conductivity test head helps to evaluate the effect of the cleaning process, by continuously removing impurities that may cause blockage and wear of the internal structure of the pipeline or pump, the service life of the equipment is prolonged, efficient and continuous purification of the fluid in the pump is realized, and the maintenance cost and downtime are effectively reduced.

[0023] Compared with the prior art, the beneficial effects achieved by the present application are:

[0024] The impurity removal and anti-blocking technology, the sedimentation mechanism effectively separates solid particles and impurities in the fluid by the combination of the filter screen, the sedimentation outer shell, the centrifugal blade and the centrifugal motor, the filter screen intercepts larger solid particles, and the centrifugal blade driven by the centrifugal motor further separates small particles by using centrifugal force, so as to protect the pump body from wear and blockage, the fluid can remove large particle impurities by passing through the filter screen, the centrifugal motor drives the centrifugal blade to rotate at high speed, the centrifugal force generated by the centrifugal motor pushes smaller particles to the edge of the sedimentation outer shell, so as to realize effective separation of impurities, since the sedimentation hydraulic cylinder drives the sedimentation outer shell to descend, the sedimentation space is increased, which can reduce the pressure on one hand and enhance the sedimentation effect on the other hand, since the pressure is related to the mass of impurities, the content of impurities per unit volume is reduced, the liquid content per unit volume is increased, so that the content of impurities per unit volume is controlled within a certain value, through the process of real-time monitoring by the conductivity test head, the centrifugal motor and the import motor are jointly controlled, so that the impurities per unit volume are controlled within a certain amount and are removed with the liquid, thereby significantly reducing the wear and blockage risk in the pump, prolonging the service life of the equipment and reducing the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and are intended to provide further description best mode for the purpose of the requirements A consistent of the application. In the drawings:

[0026] Figure 1 is a schematic diagram of the overall structure of the present application;

[0027] Figure 2 is a schematic diagram of the pump body of the present application;

[0028] Figure 3 is a schematic diagram of the piston assembly of the present application;

[0029] Figure 4 is a schematic diagram of the moving tank of the present application;

[0030] Figure 5 is a schematic diagram of the bypass adjustment mechanism of the present application;

[0031] Figure 6 is a schematic diagram of the cooling mechanism of the present application;

[0032] Figure 7 is a schematic diagram of the bidirectional control mechanism of the present application;

[0033] Figure 8 is a schematic diagram of the second flow gear, third flow gear of the present application;

[0034] Figure 9 is a schematic diagram of the expansion mechanism of the present application;

[0035] Figure 10 is a schematic diagram of the settling mechanism of the present application;

[0036] In the figure: 1, volumetric pump motor; 2, bypass adjustment mechanism; 21, pressure sensor; 22, bypass pipe; 23, first connecting block; 24, first electromagnetic valve block; 25, first energizing coil; 26, first elastic member; 27, second electromagnetic valve block; 28, second energizing coil; 29, second elastic member; 210, first pressure slide rod; 211, second pressure slide rod; 212, second connecting block; 3, bidirectional control mechanism; 31, flow rate sensor; 32, first flow gear; 33, second flow gear; 34, third flow gear; 35, fourth flow gear; 36, inlet valve; 37, outlet valve; 38, control block; 39, inlet motor; 310, outlet motor; 4, cooling mechanism; 41, temperature sensor; 42, heat sink; 43, cooling fan; 44, circulating pump; 45, liquid inlet pipe; 46, liquid outlet pipe; 47, liquid storage tank; 5, expansion mechanism; 51, expansion pipe; 52, elastic diaphragm; 53, expansion ring clamp; 6, sedimentation mechanism; 61, filter screen; 62, sedimentation outer shell; 63, sedimentation inner shell; 64, centrifugal blade; 65, centrifugal motor; 66, electrical conductivity test head; 67, sedimentation hydraulic cylinder; 7, pump body; 71, pump shell; 711, flow cavity; 72, outer rotor; 73, inner rotor; 74, piston assembly; 741, piston cavity shell; 7411, flow limiting cavity; 7412, sliding groove; 742, piston plate; 743, connecting plate; 744, sliding plate; 745, sliding rod; 75, transmission rod; 76, transmission gear; 77, gear rod; 771, transmission groove; 78, mounting block; 781, moving groove. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] Please refer to Figure 1 Figure 10 The present application provides technical solutions:

[0039] The volumetric pump comprises a volumetric pump motor 1, a bypass adjustment mechanism 2, a bidirectional control mechanism 3, a cooling mechanism 4, an expansion mechanism 5, a sedimentation mechanism 6, and a pump body 7. The volumetric pump motor 1 and the pump body 7 are fixedly connected, and the volumetric pump motor 1 and the pump body 7 are in transmission connection. The bypass adjustment mechanism 2 and the pump body 7 are in communication, the bypass adjustment mechanism 2 and the bidirectional control mechanism 3 are in communication, the bidirectional control mechanism 3 and the pump body 7 are fixedly connected, the bidirectional control mechanism 3 and the pump body 7 are in communication, the cooling mechanism 4 and the pump body 7 are fixedly connected, the expansion mechanism 5 and the bidirectional control mechanism 3 are in communication, the sedimentation mechanism 6 and the pump body 7 are fixedly connected, and the sedimentation mechanism 6 and the bidirectional control mechanism 3 are in communication.​

[0040] By adopting the above technical scheme, the volumetric pump motor 1 is directly connected with the pump body 7 as a power source to provide necessary power to drive the pump to work, the bypass adjustment mechanism 2 is connected with the pump body 7, and when detecting high pressure, it can be automatically opened to allow part of the fluid to bypass, thereby reducing the pressure in the main flow channel, the bidirectional control mechanism 3 is connected with the bypass adjustment mechanism 2 and the pump body 7, controls the direction and speed of fluid in and out, and maintains the dynamic balance of the fluid, the cooling mechanism 4 is fixed to the pump body 7, and by controlling the temperature of the fluid, the increase of pressure caused by overheating is prevented, the expansion mechanism 5 is connected with the bidirectional control mechanism 3, and is used for processing the fluid expansion caused by temperature change or other factors, and reducing the internal pressure, and the sedimentation mechanism 6 is also fixed to the pump body 7, and is responsible for separating the mass content of impurities from the fluid, thereby preventing blockage and wear caused by impurity accumulation, not only optimizing the performance of the pump, improving the safety and stability of operation, but also effectively prolonging the service life of the equipment, and being especially suitable for strict industrial applications such as chemical industry, pharmaceutical industry and water treatment, through the cooperative work of these integrated mechanisms, the pump can maintain high efficiency under various working conditions, and automatically adjusts and protects the system to prevent possible overload or damage.

[0041] Further, the pump body 7 comprises a pump shell 71, an outer rotor 72, an inner rotor 73, a piston assembly 74, a transmission rod 75, a transmission gear 76, a gear rod 77 and a mounting block 78, the pump shell 71 and the outer rotor 72 are tightly connected, the outer rotor 72 and the inner rotor 73 are rotationally connected, the piston assembly 74 and the pump shell 71 are tightly connected, the gear rod 77 and the volumetric pump motor 1 are tightly connected, the gear rod 77 and the volumetric pump motor 1 are in transmission connection, the volumetric pump motor 1 and the mounting block 78 are tightly connected, the mounting block 78 and the pump shell 71 are tightly connected, the gear rod 77 and the transmission gear 76 are in transmission connection, the transmission gear 76 and the transmission rod 75 are tightly connected, the transmission rod 75 and the inner rotor 73 are in transmission connection, the inner rotor 73 is located at one end of the transmission rod 75 away from the transmission gear 76, the inner rotor 73 and the transmission rod 75 are rotationally connected, and the transmission rod 75 and the piston assembly 74 are rotationally connected.

[0042] By adopting the above technical scheme, the pump body 7 structure includes a pump shell 71, an outer rotor 72, an inner rotor 73, a piston assembly 74, a transmission rod 75, a transmission gear 76, a gear rod 77 and a mounting block 78, the cooperative work of these components ensures the high performance and reliability of the pump, the volumetric pump motor 1 as the main power source, is fastened and transmission connected with the gear rod 77, provides the necessary rotary power, the gear rod 77 transmits power to the transmission rod 75 through the transmission gear 76, the transmission rod 75 transmits power to the inner rotor 73, the inner rotor 73 is rotationally connected with the outer rotor 72, located in the pump shell 71, the outer rotor 72 is fixed to the pump shell 71, while the inner rotor 73 rotates with the transmission rod 75, generates eccentric motion, the piston assembly 74 is rotationally connected with the transmission rod 75, driven by the eccentric motion of the inner rotor 73, so that the piston reciprocates in the pump shell 71, changes the volume inside the pump, after the fluid enters the pump body 7, it is guided into the spiral inner cavity of the outer rotor 72, due to the rotation of the spiral inner cavity, the fluid is effectively pushed along the spiral path, through the continuous spiral motion, the fluid is sent from the pump inlet to the outlet, thereby sucking and discharging the fluid, the mounting block 78 connects the volumetric pump motor 1 with the pump shell 71, ensures the stability and durability of the entire mechanical structure, when the volumetric pump motor 1 starts, power is transmitted to the transmission rod 75 and the inner rotor 73 through the gear rod 77 and the transmission gear 76, the rotation of the inner rotor 73 causes the piston assembly 74 to reciprocate in the pump shell 71, this reciprocating motion realizes the suction and discharge of fluid by changing the volume inside the pump, the fluid flow is driven by the pressure difference generated by the eccentric rotor, thereby completing efficient fluid delivery, through precise power transmission, the pump can efficiently deliver fluid, especially suitable for occasions requiring continuous or intermittent high pressure fluid delivery, the pump design takes into account the ability to handle solid particles or high viscosity media, can perform well in complex industrial applications.

[0043] Further, the piston assembly 74 comprises a piston cavity shell 741, a piston plate 742, a connecting plate 743, a sliding plate 744 and a sliding rod 745, the piston cavity shell 741 is tightly connected with the pump shell 71, the piston cavity shell 741 is provided with a flow limiting cavity 7411, the flow limiting cavity 7411 is a half-moon shape, the flow limiting cavity 7411 is a slanting sliding cavity with a gradually reduced diameter from the connecting plate 743 to the piston plate 742, the piston plate 742 is in abutment with the piston cavity shell 741, the piston plate 742 is in abutment with the flow limiting cavity 7411, the piston plate 742 is a half-moon shape, the piston plate 742 is a slanting sliding block with a gradually reduced outer edge, the connecting plate 743 is tightly connected with the piston plate 742, the connecting plate 743 is drivingly connected with the piston plate 742, the sliding rod 745 is tightly connected with the connecting plate 743, the sliding rod 745 is drivingly connected with the connecting plate 743, the sliding rod 745 is slidingly connected with the piston cavity shell 741, the piston cavity shell 741 is provided with a sliding groove 7412, the sliding rod 745 is slidingly connected with the sliding groove 7412, the sliding rod 745 is tightly connected with the sliding plate 744, the sliding plate 744 is slidingly connected with the mounting block 78, the mounting block 78 is provided with a moving groove 781, the sliding plate 744 is slidingly connected with the moving groove 781, the gear rod 77 is drivingly connected with the sliding rod 745, the gear rod 77 is provided with a transmission groove 771, the transmission groove 771 is a slanting ring groove shape, and the sliding rod 745 is in abutment with the transmission groove 771.

[0044] By adopting the above technical scheme, the plug assembly is designed to accurately control the pressure and flow of the fluid, and the internal volume is adjusted through a complex and delicate mechanical structure, so that the pump can work effectively under various working conditions. The piston assembly 74 includes a piston cavity shell 741, a piston plate 742, a connecting plate 743, a sliding plate 744 and a sliding rod 745, each of which is precisely designed to ensure efficient and stable operation. The piston cavity shell 741 is fixed inside the pump shell 71 and is provided with a specially designed flow limiting cavity 7411. The cavity is semilunar in shape and the diameter gradually decreases to form an inclined sliding cavity. The piston plate 742 is in close contact with the piston cavity shell 741 and matches the shape of the flow limiting cavity 7411. The connecting plate 743 fixedly connects the piston plate 742 and the sliding rod 745, and is connected to the power output of the volumetric pump motor 1 through the gear rod 77, ensuring the transmission of power. The sliding rod 745 moves in the sliding groove 7412 in the piston cavity shell 741 to control the position of the piston plate 742. The sliding plate 744 is slidingly connected with the moving groove 781 in the mounting block 78. With the rotation of the gear rod 77, the rotational power is converted into linear motion of the sliding rod 745 through the design of the transmission groove 771 (oblique ring groove), thereby driving the piston plate 742 to reciprocate in the flow limiting cavity 7411. When the volumetric pump motor 1 starts, the sliding rod 745 and the piston plate 742 connected therewith reciprocate in the flow limiting cavity 7411 through the power transmission of the gear rod 77. This movement changes the fluid volume inside the pump to generate the necessary pressure to suck and discharge the fluid. The special design of the flow limiting cavity 7411 (semilunar and inclined sliding cavity) optimizes the fluid flow path, reduces flow resistance and energy loss, and improves the efficiency of the pump. The design of the piston assembly 74 allows accurate control of the fluid dynamics inside the pump, adapts to different working conditions and requirements, and effectively adjusts the internal volume and optimizes the fluid flow path to reduce energy consumption and improve the overall efficiency of the pump.

[0045] Further, the bypass adjusting mechanism 2 comprises a pressure sensor 21, a bypass pipe 22, a first connecting block 23, a first electromagnetic valve block 24, a first energized coil 25, a first elastic member 26, a second electromagnetic valve block 27, a second energized coil 28, a second elastic member 29, a first pressure slide rod 210, a second pressure slide rod 211 and a second connecting block 212, the bypass pipe 22 and the first connecting block 23 are communicated, the bypass pipe 22 and the second connecting block 212 are communicated, the first electromagnetic valve block 24 and the first elastic member 26 are fixedly connected, the first electromagnetic valve block 24 and the first pressure slide rod 210 are fixedly connected, the first pressure slide rod 210 and the first connecting block 23 are slidably connected, the first energized coil 25 and the first connecting block 23 are fixedly connected, the first energized coil 25 and the first elastic member 26 are magnetically connected, the first energized coil 25 and the first electromagnetic valve block 24 are magnetically connected, the second electromagnetic valve block 27 and the second elastic member 29 are fixedly connected, the second electromagnetic valve block 27 and the second pressure slide rod 211 are fixedly connected, the second pressure slide rod 211 and the second connecting block 212 are slidably connected, the second energized coil 28 and the second connecting block 212 are fixedly connected, the second energized coil 28 and the second elastic member 29 are magnetically connected, the second energized coil 28 and the second electromagnetic valve block 27 are magnetically connected, the first connecting block 23 and the bidirectional control mechanism 3 are communicated, the second connecting block 212 and the pump shell 71 are communicated, and the pressure sensor 21 and the second electromagnetic valve block 27 are fixedly connected.

[0046] By adopting the above technical scheme, the bypass adjusting mechanism 2 is a key component, aiming to effectively control and manage the pressure in the pump to prevent overpressure, which includes a pressure sensor 21, a bypass pipe 22, two sets of electromagnetic valve blocks (a first electromagnetic valve block 24 and a second electromagnetic valve block 27), and corresponding connecting pieces and control coils. The pressure sensor 21 monitors the pressure in the pump and activates the electromagnetic valves when the pressure exceeds the preset safety threshold. Each electromagnetic valve block is composed of an electromagnetic valve, an energized coil, an elastic piece, and a sliding rod 745, which are integrated through magnetic and mechanical connections to ensure quick and accurate response. When the pressure sensor 21 detects excessive pressure, it sends a signal to the energized coil, which activates the first electromagnetic valve block 24 and the second electromagnetic valve block 27. After activation, the energized coil generates a magnetic force that causes the connected elastic piece to deform, thereby pushing the sliding rod 745 to move and open or adjust the valve of the bypass pipe 22. In this way, part of the fluid bypasses the pump through the bypass pipe 22, thereby reducing the pressure in the pump. The movement of the first pressure sliding rod 210 and the second pressure sliding rod 211 allows for fine adjustment of the bypass flow to accurately control the pressure to a safe level. Overpressure protection automatically reduces pressure when fluid pressure is too high, protecting the pump body 7 and pipeline system from damage. Automatic adjustment automatically adjusts the bypass flow according to real-time pressure changes without the need for manual intervention, improving stability. By reducing pressure fluctuations in the system, the stability and reliability of the entire pump system are improved, and efficiency is increased: by maintaining the pressure in the pump within the optimal operating range, the efficiency of the pump is ensured, providing an efficient and reliable overpressure protection solution that effectively avoids equipment failure and operational interruptions caused by abnormal pressure.

[0047] Further, the bidirectional control mechanism 3 includes two flow rate sensors 31, a first flow gear 32, a second flow gear 33, a third flow gear 34, a fourth flow gear 35, an inlet valve 36, an outlet valve 37, a control block 38, an inlet motor 39, and an outlet motor 310. One flow rate sensor 31 is fixedly connected with the inlet valve 36, and the other flow rate sensor 31 is fixedly connected with the outlet valve 37. The first flow gear 32 is rotationally connected with the control block 38, and the first flow gear 32 is transmissionally connected with the second flow gear 33. The inlet motor 39 is fixedly connected with the control block 38, and the inlet motor 39 is transmissionally connected with the first flow gear 32. The inlet valve is in communication with the control block 38, and the first connecting block 23 is in communication with the inlet valve 36. The third flow gear 34 is rotationally connected with the control block 38, and the third flow gear 34 is transmissionally connected with the fourth flow gear 35. The outlet motor 310 is fixedly connected with the control block 38, and the outlet motor 310 is transmissionally connected with the third flow gear 34. The outlet valve 37 is in communication with the control block 38, and the first connecting block 23 is in communication with the inlet valve 36. The inlet valve 36 is in communication with the sedimentation mechanism 6, and the expansion mechanism 5 is fixedly connected with the outlet valve 37. The flow rate sensor 31 is electrically connected with the inlet motor 39, and the flow rate sensor 31 is electrically connected with the outlet motor 310.

[0048] By adopting the above technical solutions, the flow gear, the motor and the valve system cooperate with the flow rate sensor 31 to dynamically adjust the inflow and outflow of the fluid, two flow rate sensors 31 are connected to the inlet valve 36 and the outlet valve 37 respectively, and the flow rates of the inflow and outflow of the pump body 7 are monitored in real time,

[0049] The inlet motor 39 drives the first flow gear 32, the gear is connected with the second flow gear 33 to realize force transmission, adjusts the opening degree of the inlet valve 36 to control the flow rate of the inflow of the pump body 7, the outlet motor 310 drives the third flow gear 34, adjusts the opening degree of the outlet valve 37 through the connection with the fourth flow gear 35, thereby controlling the discharge speed of the fluid, the inlet valve 36 and the outlet valve 37 are connected with the respective flow gear sets, automatically adjust the opening and closing of the valves according to the data feedback by the sensor, thereby accurately controlling the flow rate and pressure of the fluid, the control block 38 serves as a central node, connects all power and control elements, ensures the correct flow direction of the fluid, and unifies and coordinates the power adjustment of the inlet and outlet, adjusts the flow rate through the valve, accurately controls the flow rate according to the real-time demand, optimizes the operation efficiency of the pump, automatically adjusts the flow rate, prevents the system pressure from being too high or too low due to excessive flow, thereby avoiding mechanical wear and tear and potential failure, optimizes the inflow and outflow speed of the fluid, reduces energy waste, improves overall energy efficiency, the real-time feedback of the flow rate sensor 31 and the rapid response of the motor gear system ensure rapid adjustment when the fluid demand changes, maintain system stability, the bidirectional control mechanism 3 effectively manages the fluid dynamics in the pump by integrating efficient motors, precise gear transmission systems and intelligent flow rate sensors 31, improves the flexibility of operation and the reliability of the pump, which is particularly critical for the chemical, pharmaceutical and water treatment industries that require efficient fluid management.

[0050] Further, the cooling mechanism 4 includes a temperature sensor 41, a heat sink 42, a cooling fan 43, a circulating pump 44, an inlet pipe 45, an outlet pipe 46 and a liquid storage tank 47, the temperature sensor 41 and the pump shell 71 are tightly connected, the heat sink 42 and the liquid storage tank 47 are tightly connected, the cooling fan 43 and the liquid storage tank 47 are tightly connected, the circulating pump 44 and the liquid storage tank 47 are tightly connected, the liquid storage tank 47 and the circulating pump 44 are communicated, the circulating pump 44 and the inlet pipe 45 are communicated, the outlet pipe 46 and the circulating pump 44 are communicated, the outlet pipe 46 and the pump shell 71 are communicated, the inlet pipe 45 and the pump shell 71 are communicated, the pump shell 71 is provided with a flow cavity 711, the outlet pipe 46 and the flow cavity 711 are communicated, the inlet pipe 45 and the flow cavity 711 are communicated, and the flow cavity 711 is spiral-shaped.

[0051] By adopting the above technical scheme, the cooling mechanism 4 is designed to effectively manage and control the temperature inside the positive displacement pump to prevent overheating and maintain the high efficiency of the pump. The mechanism consists of a temperature sensor 41, a heat sink 42, a cooling fan 43, a circulating pump 44, an inlet pipe 45, an outlet pipe 46, and a liquid storage tank 47, integrating a complete cooling circulation system. The temperature sensor 41 is installed on the pump shell 71 to monitor the temperature inside the pump in real time. When the sensor detects that the temperature exceeds the preset threshold, the circulating pump 44 and the cooling fan 43 are activated. The circulating pump 44 pushes the cooling liquid in the liquid storage tank 47 through the inlet pipe 45 into the spiral flow cavity 711 inside the pump shell 71. After the cooling liquid absorbs heat, it returns to the liquid storage tank 47 through the outlet pipe 46. The heat sink 42 is attached to the liquid storage tank 47 to help the cooling liquid dissipate heat. The cooling fan 43 enhances the heat dissipation effect and accelerates the heat exchange process. The cooling mechanism 4 utilizes the heat capacity characteristics of the cooling liquid in the closed circulation cooling system to transfer the heat generated inside the pump to the heat sink 42 and the fan through the action of the circulating pump 44, achieving rapid heat dissipation. The design of the spiral flow cavity 711 increases the surface area of the cooling liquid in contact with the pump shell 71, improving the heat exchange efficiency and allowing the heat to be absorbed and carried away by the cooling liquid more quickly. The cooling mechanism 4 effectively prevents overheating of the equipment caused by long-term operation or high-load operation, protects the internal components of the pump, and prolongs the service life of the equipment. By maintaining the equipment at an optimal operating temperature, the pump's operating efficiency and reliability are ensured, and performance degradation caused by thermal effects is avoided. The automatic start and stop of the system reduces manual intervention, reducing operational complexity and cost. The cooling mechanism 4 provides an efficient and automated temperature management solution for the eccentric positive displacement pump, allowing the pump to maintain optimal performance even in demanding industrial environments.

[0052] Further, the expansion mechanism 5 includes an expansion pipe 51, an elastic diaphragm 52, and an expansion ring clamp 53. The expansion pipe 51 is tightly connected with the outlet valve 37, and the expansion pipe 51 and the outlet valve 37 are in communication. The expansion pipe 51 is in communication with the control block 38.

[0053] By adopting the above technical scheme, the expansion mechanism 5 aims to manage and regulate the volume expansion caused by the change of fluid temperature, thereby preventing damage to the pump due to the increase of internal pressure. The expansion mechanism is composed of an expansion pipe 51, an elastic diaphragm 52 and an expansion ring clamp 53. The expansion pipe 51 is connected with the outlet valve 37 and the control block 38, ensuring smooth flow and pressure regulation of the fluid. The expansion pipe 51 is tightly connected with the outlet valve 37 at one end and communicates with it, ensuring that the fluid can flow to the outlet through the expansion pipe 51. The other end communicates with the control block 38. The elastic diaphragm 52 is installed inside the expansion pipe 51 and is fixed by the expansion ring clamp 53. The expansion ring clamp 53 ensures that the expansion pipe 51 maintains structural integrity without breaking or excessive expansion when subjected to high pressure. When the fluid in the pump expands in volume due to temperature rise, the increased internal pressure will push the elastic diaphragm 52 to expand outward of the expansion pipe 51. This expansion allows the internal volume of the expansion pipe 51 to increase, thereby absorbing excess pressure and avoiding direct transmission to the pump body 7 or the outlet valve 37, reducing the risk of equipment damage caused by excessive pressure. The expansion mechanism 5 effectively manages the expansion of the fluid caused by temperature change by providing additional expansion space, preventing overpressure, reducing the sudden increase of internal pressure, protecting the pump body 7 and other sensitive components from pressure fluctuations, prolonging the service life of the equipment, maintaining the internal pressure of the pump within a safe range, and enhancing the stability and reliability of the entire system.

[0054] Further, the sedimentation mechanism 6 includes a filter screen 61, a sedimentation outer shell 62, a sedimentation inner shell 63, a centrifugal blade 64, a centrifugal motor 65, a conductivity test head 66 and a sedimentation hydraulic cylinder 67. The filter screen 61 and the sedimentation outer shell 62 are tightly connected, the sedimentation outer shell 62 and the sedimentation inner shell 63 are slidingly connected, the centrifugal motor 65 and the sedimentation inner shell 63 are tightly connected, the centrifugal motor 65 and the centrifugal blade 64 are drivingly connected, the sedimentation hydraulic cylinder 67 and the volumetric pump motor 1 are tightly connected, the conductivity test head 66 and the sedimentation outer shell 62 are tightly connected, the conductivity test head 66 and the centrifugal motor 65 are tightly connected, and the centrifugal motor 65 and the inlet motor 39 are electrically connected.

[0055] By adopting the above technical scheme, the mass of impurities in the fluid is effectively removed by the method of centrifugal separation to protect the pump body 7 and improve the efficiency and service life of the pump. The mechanism includes a filter screen 61, a settling outer shell 62, a settling inner shell 63, a centrifugal blade 64, a centrifugal motor 65, a conductivity test head 66, and a settling hydraulic cylinder 67, which constitute a high-efficiency settling system. The filter screen 61 is installed at the outlet of the settling outer shell 62 to capture larger solid particles and impurities. The fluid enters the settling inner shell 63. The centrifugal motor 65 drives the centrifugal blade 64 to rotate. The particles are separated from the fluid by centrifugal force and pushed to the edge of the settling outer shell 62. The settling hydraulic cylinder 67 controls the position or pressure of the settling inner shell 63, which helps to concentrate and remove the settled solid impurities. The conductivity test head 66 is installed in the settling outer shell 62 to monitor the conductivity of the fluid, which indirectly reflects the purity and impurity content of the fluid. When the fluid enters the settling mechanism 6, the larger impurities are first removed by the filter screen 61, and then the fluid passes through the centrifugal inner shell driven by the centrifugal motor 65. Under the action of the high-speed rotating centrifugal blade 64, the heavier impurities are thrown to the edge of the settling outer shell 62 by centrifugal force, while the cleaner fluid is kept on the axis of the inner shell. In this way, the mass of solid particles and other impurities in the fluid is reduced by physical separation method. The monitoring results of the conductivity test head 66 help to evaluate the effect of the cleaning process. By continuously removing impurities that can cause blockage and wear of the internal structure of the pipeline or pump, the service life of the equipment is prolonged, and efficient and continuous purification of the fluid in the pump is achieved, effectively reducing maintenance costs and downtime.

[0056] The working principle of the present application: through the impurity removal and its anti-blocking technology, the settling mechanism 6 is combined with filter screen 61, settling shell 62, centrifugal blade 64 and centrifugal motor 65, which can efficiently separate solid particles and impurities in the fluid. The filter screen 61 intercepts larger solid particles, while the centrifugal blade 64 driven by the centrifugal motor 65 further separates fine particles by using centrifugal force, thereby protecting the pump body 7 from wear and blockage. The fluid passes through the filter screen 61, which can remove large particle impurities. The centrifugal motor 65 drives the centrifugal blade 64 to rotate at high speed, generating centrifugal force that pushes smaller particles to the edge of the settling shell 62, thereby achieving effective separation of impurities. Since the settling hydraulic cylinder 67 drives the settling shell 62 to descend, the settling space is increased, which can reduce the pressure on one hand and enhance the settling effect on the other hand. Since the pressure is related to the mass of impurities, the content of impurities per unit volume is reduced, and the water volume is increased, so that the content of impurities per unit volume is controlled within a certain value. Through this process, the electric conductivity test head 66 monitors in real time, and the centrifugal motor 65 and the import motor 39 jointly control, so that the impurities per unit volume are controlled within a certain amount and are discharged with the liquid, thereby significantly reducing the wear and blockage risk inside the pump, prolonging the service life of the equipment, and reducing the maintenance cost. In summary, the present application integrates impurity treatment, overpressure protection and temperature control technology in the eccentric volumetric pump, which not only improves the performance and reliability of the pump, but also expands its applicability in industrial applications. The integration of these technologies ensures that the pump can operate efficiently and stably under various working conditions, meeting the demand of modern industry for high-performance pump equipment.

[0057] It should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0058] Finally, it should be noted that the above-described embodiments are merely exemplary of the application and should not be used in a limiting sense. Although the application has been described in detail with particular references to the foregoing embodiments, those skilled in the art will understand that modifications and variations can be made to the described embodiments without departing from the spirit and principles of the application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An eccentric positive displacement pump having overpressure protection, characterized by: The volumetric pump comprises a volumetric pump motor (1), a bypass adjusting mechanism (2), a bidirectional control mechanism (3), a cooling mechanism (4), an expansion mechanism (5), a sedimentation mechanism (6) and a pump body (7), the volumetric pump motor (1) and the pump body (7) are fixedly connected, the volumetric pump motor (1) and the pump body (7) are in transmission connection, the bypass adjusting mechanism (2) and the pump body (7) are communicated, the bypass adjusting mechanism (2) and the bidirectional control mechanism (3) are communicated, the bidirectional control mechanism (3) and the pump body (7) are fixedly connected, the bidirectional control mechanism (3) and the pump body (7) are communicated, the cooling mechanism (4) and the pump body (7) are fixedly connected, the expansion mechanism (5) and the bidirectional control mechanism (3) are communicated, the sedimentation mechanism (6) and the pump body (7) are fixedly connected, and the sedimentation mechanism (6) and the bidirectional control mechanism (3) are communicated.

2. A pump as claimed in claim 1, characterized in that: The pump body (7) comprises a pump shell (71), an outer rotor (72), an inner rotor (73), a piston assembly (74), a transmission rod (75), a transmission gear (76), a gear rod (77) and a mounting block (78), the pump shell (71) and the outer rotor (72) are fixedly connected, the outer rotor (72) and the inner rotor (73) are in rotary connection, the piston assembly (74) and the pump shell (71) are fixedly connected, the gear rod (77) and the volumetric pump motor (1) are fixedly connected, the gear rod (77) and the volumetric pump motor (1) are in transmission connection, the volumetric pump motor (1) and the mounting block (78) are fixedly connected, the mounting block (78) and the pump shell (71) are fixedly connected, the gear rod (77) and the transmission gear (76) are in transmission connection, the transmission gear (76) and the transmission rod (75) are fixedly connected, the transmission rod (75) and the inner rotor (73) are in transmission connection, the inner rotor (73) is located at one end of the transmission rod (75) away from the transmission gear (76), the inner rotor (73) and the transmission rod (75) are in rotary connection, and the transmission rod (75) and the piston assembly (74) are in rotary connection.

3. A pump as claimed in claim 2, characterized in that: The piston assembly (74) includes a piston cavity shell (741), a piston plate (742), a connecting plate (743), a sliding plate (744) and a sliding rod (745), the piston cavity shell (741) is fastened and connected with the pump shell (71), the piston cavity shell (741) is provided with a flow limiting cavity (7411), the flow limiting cavity (7411) is a half-moon shape, the flow limiting cavity (7411) is a connecting plate (743) to the piston plate (742) caliber gradually reduced inclined sliding cavity, the piston plate (742) and the piston cavity shell (741) are in abutment, the piston plate (742) and the flow limiting cavity (7411) are in abutment, the piston plate (742) is a half-moon shape, the piston plate (742) is an inclined sliding block with gradually reduced outer edge, the connecting plate (743) and the piston plate (742) are fastened and connected, the connecting plate (743) and the piston plate (742) are drivingly connected, the sliding rod (745) and the connecting plate (743) are fastened and connected, the sliding rod (745) and the connecting plate (743) are drivingly connected, the sliding rod (745) and the piston cavity shell (741) are slidingly connected, the piston cavity shell (741) is provided with a sliding groove (7412), the sliding rod (745) and the sliding groove (7412) are slidingly connected, the sliding rod (745) and the sliding plate (744) are fastened and connected, the sliding plate (744) and the mounting block (78) are slidingly connected, the mounting block (78) is provided with a moving groove (781), the sliding plate (744) and the moving groove (781) are slidingly connected, the gear rod (77) and the sliding rod (745) are drivingly connected, the gear rod (77) is provided with a transmission groove (771), the transmission groove (771) is an inclined ring groove, and the sliding rod (745) and the transmission groove (771) are in abutment.

4. A partial volumetric pump with overpressure protection according to claim 3, characterized in that: The bypass adjusting mechanism (2) comprises a pressure sensor (21), a bypass pipe (22), a first connecting block (23), a first electromagnetic valve block (24), a first energized coil (25), a first elastic member (26), a second electromagnetic valve block (27), a second energized coil (28), a second elastic member (29), a first pressure slide rod (210), a second pressure slide rod (211) and a second connecting block (212), the bypass pipe (22) and the first connecting block (23) are communicated, the bypass pipe (22) and the second connecting block (212) are communicated, the first electromagnetic valve block (24) and the first elastic member (26) are fixedly connected, the first electromagnetic valve block (24) and the first pressure slide rod (210) are fixedly connected, the first pressure slide rod (210) and the first connecting block (23) are slidingly connected, the first energized coil (25) and the first connecting block (23) are fixedly connected, the first energized coil (25) and the first elastic member (26) are magnetically connected, the first energized coil (25) and the first electromagnetic valve block (24) are magnetically connected, the second electromagnetic valve block (27) and the second elastic member (29) are fixedly connected, the second electromagnetic valve block (27) and the second pressure slide rod (211) are fixedly connected, the second pressure slide rod (211) and the second connecting block (212) are slidingly connected, the second energized coil (28) and the second connecting block (212) are fixedly connected, the second energized coil (28) and the second elastic member (29) are magnetically connected, the second energized coil (28) and the second electromagnetic valve block (27) are magnetically connected, the first connecting block (23) and the bidirectional control mechanism (3) are communicated, the second connecting block (212) and the pump shell (71) are communicated, and the pressure sensor (21) and the second electromagnetic valve block (27) are fixedly connected.

5. A partial volumetric pump with overpressure protection according to claim 4, characterized in that: The bidirectional control mechanism (3) comprises flow rate sensors (31), a first flow gear (32), a second flow gear (33), a third flow gear (34), a fourth flow gear (35), an inlet valve (36), an outlet valve (37), a control block (38), an inlet motor (39) and an outlet motor (310), the two flow rate sensors (31) are fixedly connected with the inlet valve (36) and the outlet valve (37) respectively, the first flow gear (32) is rotatably connected with the control block (38), the first flow gear (32) is in transmission connection with the second flow gear (33), the inlet motor (39) is fixedly connected with the control block (38), the inlet motor (39) is in transmission connection with the first flow gear (32), the inlet valve (36) is in communication with the control block (38), the first connecting block (23) is in communication with the inlet valve (36), the third flow gear (34) is rotatably connected with the control block (38), the third flow gear (34) is in transmission connection with the fourth flow gear (35), the outlet motor (310) is fixedly connected with the control block (38), the outlet motor (310) is in transmission connection with the third flow gear (34), the outlet valve (37) is in communication with the control block (38), the first connecting block (23) is in communication with the inlet valve (36), the inlet valve (36) is in communication with the sedimentation mechanism (6), the inflation mechanism (5) is fixedly connected with the outlet valve (37), the flow rate sensors (31) are electrically connected with the inlet motor (39) and the outlet motor (310).

6. An eccentric volume pump with overpressure protection according to claim 2, characterized in that: The cooling mechanism (4) comprises temperature sensors (41), radiating fins (42), cooling fans (43), circulating pumps (44), liquid inlet pipes (45), liquid outlet pipes (46) and liquid storage tanks (47), the temperature sensors (41) are fixedly connected with the pump shell (71), the radiating fins (42) are fixedly connected with the liquid storage tanks (47), the cooling fans (43) are fixedly connected with the liquid storage tanks (47), the circulating pumps (44) are fixedly connected with the liquid storage tanks (47), the liquid storage tanks (47) are in communication with the circulating pumps (44), the circulating pumps (44) are in communication with the liquid inlet pipes (45), the liquid outlet pipes (46) are in communication with the circulating pumps (44), the liquid outlet pipes (46) are in communication with the pump shell (71), the liquid inlet pipes (45) are in communication with the pump shell (71), the pump shell (71) is provided with a flow cavity (711), the liquid outlet pipes (46) are in communication with the flow cavity (711), the liquid inlet pipes (45) are in communication with the flow cavity (711), and the flow cavity (711) is spiral-shaped.

7. An eccentric volume pump with overpressure protection according to claim 5, characterized in that: The inflation mechanism (5) comprises inflation pipes (51), elastic diaphragms (52) and inflation ring clamps (53), the inflation pipes (51) are fixedly connected with the outlet valve (37), the inflation pipes (51) are in communication with the outlet valve (37), and the inflation pipes (51) are in communication with the control block (38).

8. An eccentric volume pump with overpressure protection according to claim 5, characterized in that: The sedimentation mechanism (6) comprises a filter screen (61), a sedimentation outer shell (62), a sedimentation inner shell (63), a centrifugal blade (64), a centrifugal motor (65), a conductivity test head (66) and a sedimentation hydraulic cylinder (67), the filter screen (61) and the sedimentation outer shell (62) are fixedly connected, the sedimentation outer shell (62) and the sedimentation inner shell (63) are slidably connected, the centrifugal motor (65) and the sedimentation inner shell (63) are fixedly connected, the centrifugal motor (65) and the centrifugal blade (64) are drivingly connected, the sedimentation hydraulic cylinder (67) and the volume pump motor (1) are fixedly connected, the conductivity test head (66) and the sedimentation outer shell (62) are fixedly connected, the conductivity test head (66) and the centrifugal motor (65) are fixedly connected, and the centrifugal motor (65) and the inlet motor (39) are electrically connected.

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