阅读说明：本技术 环保型计量泵及其控制装置 (Environment-friendly metering pump and control device thereof ) 是由 周森 熊启川 吴金倩 周财华 徐卫华 于 2021-09-06 设计创作，主要内容包括：本发明提供了一种环保型计量泵及其控制装置,其解决技术问题的技术方案包括泵体,所述泵体内设有活塞,活塞的一端设有活塞杆,所述泵体的上部设有驱动室,所述驱动室内设有与所述活塞杆连接的驱动装置,活塞与泵体之间形成有腔室,所述腔室底部连接有出液管,所述腔室的侧壁上设有进液管,所述活塞的位移最高点高于所述出液管与腔室的连通位置,所述活塞位于腔室内的端面上设有滤膜,所述活塞上开设有多个透气孔；本发明可提高灌装的精准度,同时可保证灌装的高效率。(The invention provides an environment-friendly metering pump and a control device thereof, and the technical scheme for solving the technical problems comprises a pump body, wherein a piston is arranged in the pump body, a piston rod is arranged at one end of the piston, a driving chamber is arranged at the upper part of the pump body, a driving device connected with the piston rod is arranged in the driving chamber, a cavity is formed between the piston and the pump body, a liquid outlet pipe is connected with the bottom of the cavity, a liquid inlet pipe is arranged on the side wall of the cavity, the highest displacement point of the piston is higher than the communication position of the liquid outlet pipe and the cavity, a filter membrane is arranged on the end surface of the piston in the cavity, and a plurality of air holes are formed in the piston; the invention can improve the filling precision and ensure the high efficiency of filling.)

1. The environment-friendly metering pump is characterized by comprising a pump body, a piston is arranged in the pump body, a piston rod is arranged at one end of the piston, a driving chamber is arranged on the upper portion of the pump body, a driving device connected with the piston rod is arranged in the driving chamber, a cavity is formed between the piston and the pump body, a liquid outlet pipe is connected to the bottom of the cavity, a liquid inlet pipe is arranged on the side wall of the cavity, the highest displacement point of the piston is higher than the communicated positions of the liquid outlet pipe and the cavity, a filter membrane is arranged on the end face of the piston in the cavity, a plurality of air holes are formed in the piston, and the air holes are circular holes, elliptical holes, square holes or triangular holes.

2. The environment-friendly metering pump according to claim 1, wherein a heating jacket for wrapping the chamber portion is disposed outside the pump body, and an electric heating wire is disposed in the heating jacket.

3. The environment-friendly metering pump according to claim 1, wherein a cleaning pipeline is arranged on a side wall of the chamber, and a check valve is arranged on the cleaning pipeline.

4. The environment-friendly metering pump according to claim 1, wherein the filter membrane is an air-permeable and water-impermeable membrane.

5. A control device is applied to the environment-friendly metering pump with high filling efficiency as claimed in any one of claims 1 to 4, and is characterized by comprising a main control module, wherein a first electromagnetic valve is arranged on the liquid inlet pipe, a second electromagnetic valve is arranged on the liquid outlet pipe, and the first electromagnetic valve and the second electromagnetic valve are in communication connection with the main control module.

6. The control apparatus of claim 5, wherein the first solenoid valve and the second solenoid valve are not open at the same time.

7. The control device according to claim 5, wherein a liquid level sensor is arranged on the inner wall of the chamber, the liquid level sensor is in communication connection with the main control module, and the liquid level sensor controls the start and stop of the driving device by sensing the liquid level in the chamber and sending a control signal.

Technical Field

The invention belongs to the technical field of metering pumps, and particularly relates to an environment-friendly metering pump and a control device thereof.

Background

The filling of liquid material all is accomplished through a series of processes, at the filling in-process, in order to guarantee that the quality of filling is invariable roughly, generally all need use the measuring pump, but the measuring pump is in the use, generally all just determine what of material through the metering function of measuring pump self or the volume of measuring pump self etc. but in the in-service use process, the function of measuring pump self can produce certain error, and then cause the non-uniformity of filling, produce the error easily. However, if a special metering mode is adopted for metering, the filling efficiency is reduced, so that it is necessary to design a metering device which can ensure high filling efficiency and can ensure filling quality.

Disclosure of Invention

The invention aims to provide an environment-friendly metering pump and a control device thereof, which can ensure high-efficiency filling efficiency and improve the filling accuracy.

The invention provides an environment-friendly metering pump and a control device thereof, and the technical scheme for solving the technical problems comprises a pump body, wherein a piston is arranged in the pump body, a piston rod is arranged at one end of the piston, a driving chamber is arranged at the upper part of the pump body, a driving device connected with the piston rod is arranged in the driving chamber, a cavity is formed between the piston and the pump body, a liquid outlet pipe is connected with the bottom of the cavity, a liquid inlet pipe is arranged on the side wall of the cavity, the highest displacement point of the piston is higher than the communication position of the liquid outlet pipe and the cavity, a filter membrane is arranged on the end surface of the piston in the cavity, a plurality of air vents are formed in the piston, and the air vents are circular holes, elliptical holes, square holes or triangular holes.

Preferably, a heating jacket for wrapping the cavity part is arranged outside the pump body, and an electric heating wire is arranged in the heating jacket.

Preferably, a cleaning pipeline is arranged on the side wall of the chamber, and a one-way valve is arranged on the cleaning pipeline.

Preferably, the filter membrane is an air-permeable and water-impermeable membrane.

The invention also discloses a control device, which is applied to the environment-friendly metering pump with high filling efficiency and comprises a main control module, wherein a first electromagnetic valve is arranged on the liquid inlet pipe, a second electromagnetic valve is arranged on the liquid outlet pipe, and the first electromagnetic valve and the second electromagnetic valve are in communication connection with the main control module.

Preferably, the first solenoid valve and the second solenoid valve are not opened at the same time.

Preferably, a liquid level sensor is arranged on the inner wall of the cavity and is in communication connection with the main control module, and the liquid level sensor senses the liquid level in the cavity and sends a control signal to control the start and stop of the driving device.

In summary, the technical scheme of the invention at least has the following beneficial effects:

1. through the arrangement of the air holes, air bubbles and the like mixed in the liquid can be discharged along the belt in the filling process, so that the filling quality is improved;

2. the control device can effectively improve the accuracy of filling quality through the main control module, simultaneously responds to the speed block, can meet the requirement of repeated discharging through one-time feeding, and ensures the filling efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a perspective cross-sectional view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a top view of the piston portion of the present invention.

In the figure; 1. a pump body; 2. a piston; 3. a drive chamber; 4. a drive device; 5. a chamber; 6. a liquid outlet pipe; 7. a liquid inlet pipe; 8. filtering the membrane; 9. air holes are formed; 10. heating a jacket; 11. cleaning a pipeline; 12. a one-way valve; 13. a first solenoid valve; 14. a second solenoid valve; 15. and a main control module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an environment-friendly metering pump and a control device thereof, as shown in figures 1-3, the environment-friendly metering pump comprises a pump body 1, a piston 2 is arranged in the pump body 1, a piston 2 rod is arranged at one end of the piston 2, a driving chamber 3 is arranged at the upper part of the pump body 1, a driving device 4 connected with the piston 2 rod is arranged in the driving chamber 3, a cavity 5 is formed between the piston 2 and the pump body 1, a liquid outlet pipe 6 is connected to the bottom of the cavity 5, a liquid inlet pipe 7 is arranged on the side wall of the cavity 5, the highest displacement point of the piston 2 is higher than the communication position of the liquid outlet pipe 6 and the cavity 5, a filter membrane 8 is arranged on the end surface of the piston 2 in the cavity 5, and a plurality of air holes 9 are formed in the piston 2. When the filling machine is used, the driving device 4 drives the piston 2 to reciprocate in the cavity 5, so that the volume of the cavity 5 is changed, when the volume of the cavity 5 is increased, the air pressure in the cavity 5 is reduced, at the moment, liquid can be added into the cavity 5 through the liquid inlet pipe 7, and when the volume of the cavity 5 is reduced due to the downward movement of the piston 2, the liquid in the cavity 5 can be discharged through the liquid outlet pipe 6 for filling. In the downward movement process of piston 2, the motion initial stage, drain pipe 6 does not open, and through the compression effect of piston 2 this moment, can increase the pressure in cavity 5, make the gas discharge of mixing in liquid to discharge through bleeder vent 9, improve the filling quality, bleeder vent 9 is the circular port, and the exhaust is effectual, further promotes the filling quality, certainly also can be for elliptical aperture or quad slit or triangle-shaped hole.

In order to improve the filling efficiency, the heating sleeve 10 for wrapping the cavity 5 is arranged outside the pump body 1, the heating sleeve 10 is internally provided with an electric heating wire, and liquid (especially viscous liquid materials) can be adhered to the inner wall of the cavity 5 due to the viscosity of the materials in the filling process, so that the filling efficiency is reduced, and the heating sleeve 10 is designed to improve the fluidity of the liquid materials and provide the filling efficiency.

In order to facilitate the periodic cleaning of the chamber 5, the side wall of the chamber 5 is provided with a cleaning pipeline 11, and the cleaning pipeline 11 is provided with a one-way valve 12.

In order to better ensure the discharge of gas, the filter membrane 8 is a gas-permeable and water-impermeable membrane in the present invention.

The invention also discloses a control device of the environment-friendly metering pump with high filling efficiency, which is applied to the metering pump and comprises a main control module 15, wherein a first electromagnetic valve 13 is arranged on the liquid inlet pipe 7, a second electromagnetic valve 14 is arranged on the liquid outlet pipe 6, and the first electromagnetic valve 13 and the second electromagnetic valve 14 are in communication connection with the main control module 15. At the in-service life, the state of opening and shutting of first solenoid valve 13, second solenoid valve 14 is controlled according to control degree to host system 15, and wherein first solenoid valve 13 and second solenoid valve 14 are not opened simultaneously, also is that reinforced and ejection of compact process of material can not go on in step, in the course of the work, is equipped with level sensor on the inner wall of cavity 5, level sensor with host system 15 communication is connected, level sensor opens and stops through the liquid level in the response cavity 5 and send control signal control drive arrangement 4. The main control module 15 can detect the liquid amount in the chamber 5 in real time through the liquid level sensor, and control the opening and closing of the first electromagnetic valve 13 through the feedback of the liquid amount, when the liquid level reaches the requirement, close the first electromagnetic valve 13, at this time, control the driving device 4 to start, drive the piston 2 to move downwards, compress the liquid in the chamber 5, when the initial pressurization reaches a certain degree (after the gas is discharged), the main control module 15 opens the second electromagnetic valve 14 (when in actual use, the second electromagnetic valve 14 can be opened after the first electromagnetic valve 13 is closed for a certain period of time), to carry out the filling, in one filling, when the liquid level in the chamber 5 is reduced to a certain position, the second electromagnetic valve 14 is closed, and after a certain time interval (the time interval is generally smaller than the interval between the opening and closing of the first electromagnetic valve 13 and the second electromagnetic valve 14, and is mainly used for matching the replacement of the external container), the second electromagnetic valve 14 is opened again, and finishing the next filling.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.