CN205628378U - A liquid supply device for a plug pump and a control system for the plug pump - Google Patents

Abstract

The utility model provides a liquid supply device of a plunger pump and a plunger pump control system, wherein a lower fixed plate is arranged at the top of a fixed seat, a lower support rod is arranged at the top of the lower fixed plate, the lower fixed plate and the lower support rod are connected by bolts, and the top of a lead screw is connected with the output shaft end of a driving motor through a coupling; the plunger pump control system comprises a central control module, a storage module, an input/output module, a display module, a power-on control module and a detection feedback module, wherein the power-on control module is connected with a driving motor, the detection feedback module is connected with the driving motor, and the plunger pump control system is connected with a power module. The plunger pump control system can accurately control the stroke of the plunger push rod of the plunger pump, so that the flow and the flow speed of the plunger pump can be accurately controlled; a plurality of pipelines can be simultaneously installed, and the device is compact in structure and convenient to install integrally; the data can be transmitted through the I/O interface, online use is realized, and the applicability and the use range of the device are improved.

Description

A liquid supply device for a plug pump and a control system for the plug pump

technical field

The utility model relates to the field of fluid control, in particular to a plug pump liquid supply device and a plug pump control system.

Background technique

In the fields of spraying and oil injection, gear pumps, vane pumps, plunger pumps or diaphragm pumps are usually used, combined with flow meters, flow regulating valves and other components to control the flow and velocity of liquids, but there are the following disadvantages during use:

1. The gear pump is a quantitative pump, and the output flow cannot be adjusted, and the liquid undergoes a qualitative change after being sheared by the gear pump. At the same time, there is a gap in the meshing process of the gears, which leads to liquid leakage and reduces the working efficiency of the gear pump, and the flow rate is difficult to control, resulting in The control pipeline installation is complicated.

2. The vane pump has the characteristics of compact structure, smooth movement and uniform flow, but the structure of the vane pump is complex and has strict requirements on the conveying medium, so the flow cannot be accurately controlled, and maintenance is difficult.

3. The plunger pump has a simple structure, high output pressure, high work efficiency, and can adjust the output flow, but the existing plunger pump cannot accurately adjust and control the flow during operation, and can only manually adjust the column after stopping. Plug stroke, and poor adjustment accuracy, therefore, it is still necessary to install complex flow and flow rate control devices at the output end.

4. The structure of the diaphragm pump is simple, and the pressure changes greatly during operation, so it is not suitable for stable oil supply and small flow precision control pipelines.

Therefore, it is difficult to control the amount of spraying medium when performing precise quantitative spraying, resulting in waste of spraying medium or affecting the quality of spraying.

This patent provides a plug pump liquid supply device and a plug pump control system, so that the flow rate and flow rate of the liquid can be controlled more efficiently and accurately.

Contents of the invention

The technical problem to be solved by the utility model is: in the field of spraying, the output flow rate and flow rate of the pump body are difficult to control, and the flow rate and flow rate adjustment device is usually used for control, resulting in complicated pipeline installation, reduced spraying quality, and waste of spraying medium.

The technical scheme that the utility model solves its technical problem adopts is:

Provided is a plug pump liquid supply device and a plug pump control system. A lower fixing plate is installed on the top of the fixing seat, and a lower support rod is installed on the top of the lower fixing plate. The lower fixing plate and the lower support rod are connected by bolts. A motor base plate is installed on the top of the lower support rod, the lower support rod and the motor base plate are connected by bolts, a drive motor is installed on the motor base plate, and the top of the screw rod is connected with the output shaft end of the drive motor through a coupling. A screw nut is installed at the center of the movable push plate, the screw rod is connected with the movable push plate through the screw nut, the bottom of the screw rod is connected with the lower fixed plate through a bearing, and a linear bearing is installed on the movable push plate. The bearing is installed on one side of the screw rod, and the guide shaft is installed at the bottom of the motor seat plate. The movable push plate is connected with the guide shaft through a linear bearing. The movable push plate can move up and down along the guide shaft, and the motor seat plate and the lower fixed A protective plate is installed on the outside of the plate; an upper support rod is installed on the top of the motor seat plate, the motor seat plate and the upper support rod are connected by bolts, and an upper fixing plate is installed on the top of the upper support rod, and the upper support rod is fixed to the upper support rod. The plates are connected by bolts, and cylinder fixing components are installed on the upper fixing plate. The circumference of the cylinder fixing components is evenly distributed on the upper fixing plate, and the piston cylinder is installed on the bottom of the cylinder fixing component through the piston cylinder connecting component. A cylinder sealing ring is installed between the body fixing component and the piston cylinder, a liquid outlet joint is installed on the top of the cylinder fixing component, a piston push rod is installed in the piston cylinder, and a diversion hole is provided in the center of the piston push rod to guide the flow. A liquid nozzle is installed on the top of the hole, and a piston seal assembly is installed between the piston push rod and the piston cylinder body. The piston push rod can move up and down in the piston cylinder body, and the piston push rod lower assembly is installed at the bottom of the piston push rod , a check valve is installed in the lower assembly of the piston push rod, a liquid inlet joint is installed at the bottom of the lower assembly of the piston push rod, and the movable push plate is installed on the bottom of the lower assembly of the piston push rod through the push plate fixing nut; There is a plunger pump control system. The plunger pump control system includes a central control module, a storage module, an input and output module, a display module, a strong current control module and a detection feedback module. The central control module is connected with a storage module, an input and output module, a display module, a strong current control module and a detection feedback module, the strong current control module is connected with the drive motor, the detection feedback module is connected with the drive motor, and the plunger pump control system is connected with the power supply module.

Preferably, the drive motor is a servo motor.

Preferably, an encoder is installed on the drive motor.

Preferably, an I/O interface is installed on the input/output module.

Preferably, the cylinder body fixing assembly is connected to the piston cylinder body using a clamp.

As a preference, the piston push rod and the lower assembly of the piston push rod are connected by a round nut.

Preferably, the circumference of the piston cylinder is evenly distributed around the drive motor.

As a preference, the lower assembly of the piston push rod and the movable push plate are connected by angular contact ball bearings.

The beneficial effect of the utility model is that the utility model can accurately control the piston push rod stroke of the plunger pump through the plunger pump control system, therefore, can accurately control the flow rate and flow rate of the plunger pump, and through the plunger pump control system It can realize digital automatic control, improve the quality of spraying, and reduce the waste of spraying mesons; the device is equipped with multiple piston cylinders, which can be installed for multiple pipelines at the same time, and the structure is compact to facilitate the overall installation of the device; it can be connected through the I/O interface Carry out data transmission, realize on-line use, improve the applicability and use range of the device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the three-dimensional structure schematic diagram that the utility model embodiment provides;

Fig. 2 is the schematic diagram of the front view structure provided by the embodiment of the utility model;

Fig. 3 is a schematic diagram of a cross-sectional structure at A-A in Fig. 2;

Fig. 4 is the schematic structural diagram of the electric control box provided by the embodiment of the present invention;

Fig. 5 is a schematic diagram of the connection of the plunger pump control system provided by the embodiment of the present invention;

In the figure: 1. Fixed seat, 2. Liquid inlet joint, 3. Movable push plate, 4. Push plate fixing nut, 5. Lower assembly of piston push rod, 6. Check valve, 7. Piston push rod, 7.1. Diversion hole, 8. Piston sealing assembly, 9. Liquid nozzle, 10. Piston cylinder, 11. Piston cylinder connection assembly, 12. Cylinder sealing ring, 13. Cylinder fixing assembly, 14. Upper fixing plate, 15. Liquid outlet joint, 16. Drive motor, 17. Coupling, 18. Screw rod, 19. Guide shaft, 20. Linear bearing, 21. Screw nut, 22. Lower fixing plate, 23. Motor seat plate , 24. Lower support rod, 25. Electric control box, 26. Piston pump control system, 26.1. Central control module, 26.2. Storage module, 26.3. Input and output module, 26.4. Display module, 26.5. Strong current control module, 26.6. Detection feedback module, 27. Power supply module, 28. Protective plate, 29. Bearing, 30. Upper support rod.

detailed description

The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are used to illustrate the utility model rather than limit the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.

As shown in Figures 1-5, Figure 1 is a schematic diagram of a three-dimensional structure provided by an embodiment of the utility model, Figure 2 is a schematic diagram of a front view structure provided by an embodiment of the utility model, and Figure 3 is a cross-sectional structure at A-A of Figure 2 Schematic diagram, Figure 4 is a schematic structural diagram of the electric control box provided by the embodiment of the utility model, and Figure 5 is a schematic diagram of the connection of the plunger pump control system provided by the embodiment of the utility model.

In a specific embodiment, a syringe pump liquid supply device and a syringe pump control system are provided. A lower fixing plate 22 is installed on the top of the fixing seat 1, and a lower support rod 24 is installed on the top of the lower fixing plate 22. The lower fixing plate 22 and the lower support rod 24 are connected by bolts, the top of the lower support rod 24 is equipped with a motor base plate 23, the lower support rod 24 and the motor base plate 23 are connected by bolts, and the motor base plate 23 is equipped with a drive Motor 16, the top of screw mandrel 18 is connected with the output shaft end of driving motor 16 through coupling 17, and the center position of movable push plate 3 is equipped with screw nut 21, and screw mandrel 18 is connected with movable push plate 3 through screw nut 21. Connection, the bottom of the screw rod 18 is connected with the lower fixed plate 22 through the bearing 29, the linear bearing 20 is installed on the movable push plate 3, the linear bearing 20 is installed on one side of the screw rod 18, and the bottom of the motor seat plate 23 is installed There is a guide shaft 19, the movable push plate 3 is connected with the guide shaft 19 through a linear bearing 20, the movable push plate 3 can move up and down along the guide shaft 19, and a protective plate is installed on the outside of the motor seat plate 23 and the lower fixed plate 22 28. An upper support rod 30 is installed on the top of the motor base plate 23. The motor base plate 23 and the upper support rod 30 are connected by bolts. An upper fixing plate 14 is installed on the top of the upper support rod 30. The upper support rod 30 is connected to The upper fixing plate 14 is connected by bolts, and the upper fixing plate 14 is equipped with a cylinder fixing assembly 13, and the cylinder fixing assembly 13 is evenly distributed on the upper fixing plate 14, and the piston cylinder 10 is connected to the piston cylinder through the piston cylinder connecting assembly 11. Installed on the bottom of the cylinder body fixing assembly 13, the cylinder body sealing ring 12 is installed between the cylinder body fixing assembly 13 and the piston cylinder 10, the liquid outlet joint 15 is installed on the top of the cylinder body fixing assembly 13, and the piston cylinder 10 is equipped with Piston push rod 7, the center of the piston push rod 7 is provided with a diversion hole 7.1, the top of the diversion hole 7.1 is equipped with a liquid nozzle 9, and a piston seal assembly 8 is installed between the piston push rod 7 and the piston cylinder 10. The piston push rod 7 can move up and down in the piston cylinder 10, the piston push rod lower assembly 5 is installed at the bottom of the piston push rod 7, the check valve 6 is installed in the piston push rod lower assembly 5, and the bottom of the piston push rod lower assembly 5 The liquid inlet joint 2 is installed at the end, and the movable push plate 3 is installed on the bottom of the piston push rod lower assembly 5 through the push plate fixing nut 4; the plunger pump control system 26 is installed in the electric control box 25, and the plunger pump control system 26 It includes a central control module 26.1, a storage module 26.2, an input and output module 26.3, a display module 26.4, a strong current control module 26.5 and a detection feedback module 26.6. The central control module 26.1 is connected with a storage module 26.2, an input and output module 26.3, a display module 26.4, The strong current control module 26.5 and the detection feedback module 26.6, the strong current control module 26.5 is connected with the drive motor 16, the detection feedback module 26.6 is connected with the drive motor 16, and the plunger pump control system 26 is connected with the power supply module 27.

As a preference, the drive motor 16 adopts a servo motor, the rotation speed of the output shaft of the servo motor can be accurately controlled through the plunger pump control system 26, and the movable push plate can be accurately controlled through the cooperative transmission of the screw rod 18 and the screw nut 21 3, and the telescopic range of the piston push rod 7 can be accurately controlled by the movable push plate 3, so the displacement of the plunger pump can be accurately controlled.

As a preference, an encoder is installed on the drive motor 16, the encoder can convert the angular displacement of the drive motor 16 into an electrical signal, and send the electrical signal to the detection feedback module 26.6, and the detection feedback module 26.6 converts the electrical signal The value information is converted into value information, and the value information is sent to the central control module 26.1, and the value in the storage module 26.2 is called by the central control module 26.1 for comparison. Therefore, the angular displacement error of the drive motor 16 can be detected.

As a preference, the I/O interface is installed on the input and output module 26.3, and the plug pump control system 26 can communicate with the robot and automatic equipment through the I/O interface and data communication protocol to improve the adaptability of the equipment. Realize automatic control and digital management.

As a preference, the cylinder body fixing assembly 13 is connected with the piston cylinder body 10 using a clamp, and the piston cylinder body 10 can be installed on the cylinder body fixing assembly 13 by hand and quickly, so it is convenient to adjust the installation pre-tightening force and Disassembly for maintenance.

As a preference, the piston push rod 7 and the piston push rod lower assembly 5 are connected with a round nut, which is convenient for manual installation and disassembly, and facilitates the installation and adjustment of the piston push rod 7 and the piston push rod lower assembly 5 .

As preferably, the circumference of the piston cylinder 10 is evenly distributed around the drive motor 16, therefore, the force on the movable push plate 3 and the upper fixed plate 14 can be more uniform, and multiple pipelines can be connected at the same time. Improve the working efficiency of the equipment.

As a preference, angular contact ball bearings are used to connect the piston push rod lower assembly 5 and the movable push plate 3, the outer ring of the bearing is installed on the movable push plate 3, and the piston push rod lower assembly 5 of the inner ring of the bearing is installed on the piston push rod to facilitate the piston The installation of the push rod lower assembly 5 and the piston push rod 7 can adjust the installation direction of the liquid inlet joint 2 during use, so as to facilitate the connection of pipelines.

In the specific working process, the whole device is fixed by the fixing seat 1, the liquid inlet joint 2 is connected with the liquid inlet pipeline, the liquid outlet joint 15 is connected with the liquid outlet pipeline, the power module 27 is powered on and the plunger pump The control system 26 and the drive motor 16 are powered, and the stroke parameters of the piston push rod 7 are input through the input and output module 26.3, and data transmission can also be performed through the I/O interface, and the stroke parameters are stored through the storage module 26.2. The display module 26.4 displays the parameters and the running state. After the piston push rod 7 activity stroke parameters are set, press the run key, and the drive motor 16 enters the running state. When running, the central control module 26.1 reads the piston push rod in the storage module 26.2 Rod 7 moves the stroke parameter information, and processes the parameter information, and transmits the processed parameter information to the strong current control module 26.5, and the strong current control module 26.5 converts and amplifies the parameter information, and controls the drive motor 16 to run according to the parameter information ; An encoder is installed on the driving motor 16, and the encoder can transmit the operating state data information of the driving motor 16 to the detection feedback module 26.6, and the detection feedback module 26.6 converts the operating state data information and transmits it to the central control module 26.1. The control module 26.1 calls the piston push rod 7 activity stroke parameter information stored in the storage module 26.2 to compare with the operating state data information of the drive motor 16, and makes corresponding parameter value compensation to ensure that the piston push rod 7 activity stroke parameter information is consistent with the drive The running state data information of the motor 16 is consistent, so the displacement of the plunger pump can be accurately controlled; when the driving motor 16 drives the piston push rod 7 to move downward, the spray medium enters the lower assembly of the piston push rod from the liquid inlet joint 2 5, and through the one-way valve 6 into the diversion hole 7.1 and then into the piston cylinder 10 through the liquid nozzle 9; when the drive motor 16 drives the piston push rod 7 to move upward, the spray medium in the piston cylinder 10 is compressed , the spraying medium cannot flow back into the piston push rod lower assembly 5 through the one-way valve 6, so the compressed spraying medium flows into the liquid outlet pipeline from the liquid outlet joint 15.

Inspired by the above-mentioned ideal embodiment according to the present invention, and through the above description, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (8)

1. A liquid supply device for a plug pump and a control system for a plug pump, characterized in that a lower fixing plate is installed on the top of the fixing seat, and a lower support rod is installed on the top of the lower fixing plate, and the lower fixing plate and the lower support rod Bolt connection is adopted, the motor base plate is installed on the top of the lower support rod, the lower support rod and the motor base plate are connected by bolts, the drive motor is installed on the motor base plate, and the top of the screw rod is connected with the output shaft of the drive motor through the coupling The ends are connected, and a screw nut is installed at the center of the movable push plate. The screw rod is connected with the movable push plate through the screw nut. The bottom of the screw rod is connected with the lower fixed plate through a bearing, and a linear bearing is installed on the movable push plate. The linear bearing is installed on one side of the screw rod, a guide shaft is installed at the bottom of the motor seat plate, the movable push plate is connected with the guide shaft through the linear bearing, the movable push plate can move up and down along the guide shaft, and the motor seat A protective plate is installed on the outside of the plate and the lower fixing plate; an upper support rod is installed on the top of the motor seat plate, the motor seat plate and the upper support rod are connected by bolts, and an upper fixing plate is installed on the top of the upper support rod, and the upper support rod The rod and the upper fixing plate are connected by bolts, and the upper fixing plate is equipped with a cylinder body fixing assembly. At the bottom of the component, a cylinder sealing ring is installed between the cylinder fixing component and the piston cylinder, the liquid outlet joint is installed on the top of the cylinder fixing component, the piston push rod is installed in the piston cylinder, and the center of the piston push rod is provided with a guide The top of the diversion hole is equipped with a liquid nozzle, and a piston seal assembly is installed between the piston push rod and the piston cylinder. The piston push rod can move up and down in the piston cylinder, and the bottom end of the piston push rod is installed with a piston The lower assembly of the push rod, the check valve is installed in the lower assembly of the piston push rod, the liquid inlet joint is installed at the bottom of the lower assembly of the piston push rod, and the movable push plate is installed on the bottom of the lower assembly of the piston push rod through the push plate fixing nut; A plunger pump control system is installed in the control box. The plunger pump control system includes a central control module, a storage module, an input and output module, a display module, a strong current control module and a detection feedback module. The central control module is connected with a storage module, an input An output module, a display module, a strong current control module and a detection feedback module, the strong current control module is connected with the drive motor, the detection feedback module is connected with the drive motor, and the plunger pump control system is connected with the power supply module. 2. A liquid supply device for a syringe pump and a control system for a syringe pump according to claim 1, wherein the drive motor is a servo motor. 3. The liquid supply device and the control system of the syringe pump according to claim 1, wherein an encoder is installed on the driving motor. 4 . The liquid supply device and control system for a plug pump according to claim 1 , wherein an I/O interface is installed on the input/output module. 5. A liquid supply device for a plug pump and a control system for a plug pump according to claim 4, wherein the cylinder body fixing component is connected to the piston cylinder body by a clamp. 6. A liquid supply device for a plug pump and a control system for a plug pump according to claim 1, wherein the piston push rod and the lower assembly of the piston push rod are connected by a round nut. 7. A liquid supply device for a plug pump and a control system for a plug pump according to claim 1, wherein the circumference of the piston and cylinder is evenly distributed around the drive motor. 8 . The liquid supply device and control system of the plug pump according to claim 1 , wherein the lower assembly of the piston push rod and the movable push plate are connected by angular contact ball bearings.