Liquid metering pump, electrolyte filling equipment and liquid filling method
阅读说明：本技术 液体计量泵、电解液灌注设备及液体灌注方法 (Liquid metering pump, electrolyte filling equipment and liquid filling method ) 是由 周艳兴 杨昆 于 2019-12-04 设计创作，主要内容包括：本发明提供一种液体计量泵、电解液灌注设备及液体灌注方法,涉及液体计量泵技术领域。本发明的液体计量泵包括：泵体,柱塞,驱动装置和液路控制装置。本发明的电解液灌注设备包括液体计量泵。本发明的液体灌注方法,包括：切断泵体的出液通路并连通泵体的进液通路；控制驱动装置带动柱塞朝移动第一预设距离；切断泵体的进液通路并连通泵体的出液通路；控制驱动装置带动柱塞移动第二预设距离。本发明的液体计量泵、电解液灌注设备及液体灌注的方法,可以解决现有的液体计量泵液体注入量难以随生产要求快速灵活地改变,液体注入量调整时间长,调整过程材料浪费多的技术问题。(The invention provides a liquid metering pump, electrolyte filling equipment and a liquid filling method, and relates to the technical field of liquid metering pumps. The liquid metering pump of the present invention comprises: the pump body, the plunger, drive arrangement and liquid way controlling means. The electrolyte perfusion apparatus of the present invention includes a liquid metering pump. The liquid filling method of the invention comprises the following steps: the liquid outlet passage of the pump body is cut off and communicated with the liquid inlet passage of the pump body; controlling a driving device to drive a plunger to move towards a first preset distance; the liquid inlet passage of the pump body is cut off and communicated with the liquid outlet passage of the pump body; and controlling the driving device to drive the plunger to move a second preset distance. The liquid metering pump, the electrolyte filling equipment and the liquid filling method can solve the technical problems that the liquid injection amount of the existing liquid metering pump is difficult to change rapidly and flexibly along with production requirements, the liquid injection amount adjusting time is long, and more materials are wasted in the adjusting process.)
1. Liquid dosing pump, characterized in that it comprises:
the pump body is used for containing liquid to be metered;
a plunger connected to the pump body so as to be movable in an axial direction thereof relative to the pump body;
the driving device is used for driving the plunger to move for a preset distance along the axial direction of the pump body relative to the pump body according to the volume of liquid to be metered entering the pump body or discharged from the pump body as required, and comprises an output component for outputting linear motion;
the transmission adjusting device is in transmission connection with the plunger and is used for adjusting the relative position and/or angle of the output part of the driving device and the plunger in the process that the driving device drives the plunger to move along the axial direction of the pump body;
and the liquid path control device is used for cutting off or communicating a liquid inlet path and a liquid outlet path of the pump body when the plunger moves relative to the pump body to change the volume of the accommodating space so as to enable the liquid to be metered to enter or discharge the liquid metering pump.
2. The liquid metering pump of claim 1, wherein the driving device further comprises a motor and a ball screw, and the motor is used for driving the ball screw to drive the plunger to perform reciprocating linear motion relative to the pump body through the output component.
3. The liquid metering pump of claim 2, wherein the transmission correction means includes a first joint bearing, a second joint bearing, and a connecting rod, the output member is formed with a first bearing mounting hole for mounting the first joint bearing and a second bearing mounting hole for mounting the second joint bearing, the first bearing mounting hole and the second bearing mounting hole are located on both sides of the plunger in the radial direction, opposite ends of the connecting rod in the radial direction of the plunger are respectively connected with the first joint bearing and the second joint bearing, and a middle portion of the connecting rod is connected with the plunger.
4. The liquid metering pump of claim 3, wherein the liquid metering pump comprises a plurality of pairs of the pump body and the plungers arranged side by side in a direction perpendicular to a guiding direction of the guiding mechanism, and a connecting rod, a first spherical plain bearing and a second spherical plain bearing corresponding to each plunger one to one, and each plunger is connected with the corresponding first spherical plain bearing and second spherical plain bearing through the corresponding connecting rod.
5. The liquid metering pump of claim 3, wherein the output member includes a driving connection plate, a bottom plate, a top plate, and an intermediate connection plate, one end of the driving connection plate is drivingly connected to the ball screw, the other opposite end is connected to the bottom plate, the bottom plate is connected to the moving member of the guide mechanism, the first bearing mounting hole is formed in the bottom plate, the top plate is connected to the bottom plate through the intermediate connection plate, the second bearing mounting hole is formed in the top plate, and the bottom plate and the top plate are respectively located on both sides of the plunger in the radial direction.
6. The liquid metering pump according to any one of claims 1 to 5, wherein the liquid path control device comprises a two-position three-way electromagnetic valve, when the liquid metering pump feeds liquid, the two-position three-way electromagnetic valve is switched to a state in which a liquid feeding path of the liquid metering pump is opened and a liquid discharging path of the liquid metering pump is closed, and when the liquid metering pump column discharges liquid, the two-position three-way electromagnetic valve is switched to a state in which the liquid feeding path of the liquid metering pump is closed and the liquid discharging path of the liquid metering pump is opened.
7. The liquid metering pump of claim 6, wherein the liquid path control device further comprises a flow guide block, the flow guide block is rectangular, a connection hole communicated with the accommodation space is formed in the flow guide block, one surface of the flow guide block abuts against one surface of the two-position three-way solenoid valve, the flow guide block comprises a middle flow hole formed by extending one surface of the flow guide block abutting against the two-position three-way solenoid valve to a position communicated with the connection hole in a direction opposite to the two-position three-way solenoid valve, the flow guide block further comprises a liquid inlet hole formed by extending one surface of the flow guide block abutting against the two-position three-way solenoid valve to a position communicated with the liquid inlet hole in a direction opposite to the two-position three-way solenoid valve, and the flow guide block comprises a liquid inlet hole formed by extending one surface of the flow guide block abutting against the two-position three-way solenoid valve to a position communicated with the liquid outlet hole in a direction opposite to the two-position three-way solenoid valve And the middle flow hole is communicated with the liquid outlet diversion hole through a two-position three-way electromagnetic valve when the liquid metering pump feeds liquid.
8. The liquid metering pump according to any one of claims 1 to 5, further comprising a detecting device for generating a trigger signal and sending the trigger signal to the controller when the movement of the plunger to the predetermined position is detected, and a controller for controlling the driving device to stop the plunger at the current position in accordance with the received trigger signal.
9. Electrolyte injection device, characterized in that it comprises a liquid metering pump according to any one of claims 1 to 8.
10. Method for liquid infusion with a liquid metering pump according to any one of claims 1 to 8, characterized by the following steps:
the liquid path control device cuts off a liquid outlet path of the pump body and is communicated with a liquid inlet path of the pump body;
driving a plunger to move a first preset distance in a direction away from a pump body by a driving device according to the specified amount of liquid entering a liquid metering pump so as to suck the specified amount of liquid into the plunger pump;
the liquid path control device cuts off a liquid inlet path of the pump body and is communicated with a liquid outlet path of the pump body;
and driving the plunger to move a second preset distance in the direction close to the pump body by the driving device according to the specified quantity of the liquid output from the liquid metering pump so as to discharge the specified quantity of the liquid from the plunger pump.
Technical Field
The invention relates to the technical field of liquid metering pumps, in particular to a liquid metering pump, electrolyte filling equipment and a liquid filling method.
Background
Many products require precise injection of certain specific liquids in production, for example, in lithium battery production, and in pharmaceutical dosing perfusion, precise injection of a specific amount of liquid is often required. In the prior art, an electric liquid injection pump is generally used for injecting liquid, although the precision is controllable, when production requirements such as product models are changed in some production processes, the injection amount of the injected liquid is required to be changed correspondingly, the electric liquid injection pump mostly adopts a manual adjustment mode to change the injection amount, and as the precision requirement of the liquid injection amount is high, a professional spends a long time on stable metering, and the time and the materials are wasted.
Disclosure of Invention
In view of the above, the present invention provides a liquid metering pump, an electrolyte filling apparatus and a liquid filling method, which are used to solve the technical problems that the liquid injection amount of the existing liquid metering pump is difficult to change rapidly and accurately along with the production requirement, the liquid injection amount adjustment time is long, and the material waste in the adjustment process is large.
In a first aspect, the present invention provides a liquid metering pump comprising:
the pump body is used for containing liquid to be metered;
a plunger connected to the pump body so as to be movable in an axial direction thereof relative to the pump body;
the driving device is used for driving the plunger to move for a preset distance along the axial direction of the pump body relative to the pump body according to the volume of liquid to be metered entering the pump body or discharged from the pump body as required, and comprises an output component for outputting linear motion;
the transmission adjusting device is in transmission connection with the plunger and is used for adjusting the relative position and/or angle of the output part of the driving device and the plunger in the process that the driving device drives the plunger to move along the axial direction of the pump body;
and the liquid path control device is used for cutting off or communicating the liquid inlet path and the liquid outlet path of the pump body when the plunger moves relative to the pump body to change the volume of the accommodating space so as to enable the liquid to be metered to enter or discharge the liquid metering pump.
Preferably, the driving device further comprises a motor and a ball screw, wherein the motor is used for driving the ball screw to drive the plunger to do reciprocating linear motion relative to the pump body through the output component.
Preferably, the transmission correction device includes a first joint bearing, a second joint bearing and a connecting rod, the output member is formed with a first bearing mounting hole for mounting the first joint bearing and a second bearing mounting hole for mounting the second joint bearing, the first bearing mounting hole and the second bearing mounting hole are located at two sides of the plunger in the radial direction, two opposite ends of the connecting rod in the radial direction of the plunger are respectively connected with the first joint bearing and the second joint bearing, and the middle of the connecting rod is connected with the plunger.
Preferably, the liquid metering pump comprises a plurality of pairs of pump bodies and plungers which are arranged side by side in a direction perpendicular to the guiding direction of the guiding mechanism, and a connecting rod, a first knuckle bearing and a second knuckle bearing which are in one-to-one correspondence with each plunger, and each plunger is connected with the corresponding first knuckle bearing and second knuckle bearing through the corresponding connecting rod.
Preferably, the output part includes a driving connection plate, a bottom plate, a top plate and an intermediate connection plate, one end of the driving connection plate is in transmission connection with the ball screw, the other opposite end of the driving connection plate is connected with the bottom plate, the bottom plate is connected with the moving member of the guide mechanism, the first bearing installation hole is formed in the bottom plate, the top plate is connected with the bottom plate through the intermediate connection plate, the second bearing installation hole is formed in the top plate, and the bottom plate and the top are respectively located on two sides of the plunger in the radial direction.
Preferably, the liquid path control device includes a two-position three-way electromagnetic valve, when the liquid metering pump feeds liquid, the two-position three-way electromagnetic valve is switched to a state that the liquid inlet path of the liquid metering pump is opened and the liquid outlet path of the liquid metering pump is closed, and when the liquid metering pump column discharges liquid, the two-position three-way electromagnetic valve is switched to a state that the liquid inlet path of the liquid metering pump is closed and the liquid outlet path of the liquid metering pump is opened.
Preferably, the liquid path control device further comprises a flow guide block, the flow guide block is rectangular, a connecting hole communicated with the accommodating space is formed in the flow guide block, one surface of the flow guide block is abutted to one surface of the two-position three-way electromagnetic valve, which is provided with a valve port, the flow guide block comprises a middle flow hole formed by extending one surface of the flow guide block abutted to the two-position three-way electromagnetic valve to the position communicated with the connecting hole in the direction opposite to the two-position three-way electromagnetic valve, a liquid inlet hole and a liquid outlet hole are further formed in the flow guide block, the flow guide block comprises a liquid inlet flow guide hole formed by extending one surface of the flow guide block abutted to the two-position three-way electromagnetic valve to the position communicated with the liquid inlet hole in the direction opposite to the two-position three-way electromagnetic valve, the flow guide block comprises a flow guide hole formed by extending one surface of the flow guide block abutted to the two-position three-position electromagnetic valve to the liquid outlet hole in, when the liquid metering pump feeds liquid, the flow hole is communicated with the liquid inlet diversion hole through a two-position three-way electromagnetic valve, and when the liquid metering pump discharges liquid, the flow hole is communicated with the liquid outlet diversion hole through a two-position three-way electromagnetic valve.
Preferably, the device further comprises a detection device and a controller, wherein the detection device is used for generating a trigger signal when the plunger is detected to move to the preset position and sending the trigger signal to the controller, and the controller controls the driving device to stop the plunger at the current position according to the received trigger signal.
In a second aspect, the present invention provides an electrolyte solution filling apparatus comprising the liquid metering pump of the first aspect.
In a third aspect, the present invention provides a method for liquid filling using the liquid metering pump of the first aspect, comprising the steps of:
the liquid path control device cuts off a liquid outlet path of the pump body and is communicated with a liquid inlet path of the pump body;
driving a plunger to move a first preset distance in a direction away from a pump body by a driving device according to the specified amount of liquid entering a liquid metering pump so as to suck the specified amount of liquid into the plunger pump;
the liquid path control device cuts off a liquid inlet path of the pump body and is communicated with a liquid outlet path of the pump body;
and driving the plunger to move a second preset distance in the direction close to the pump body by the driving device according to the specified quantity of the liquid output from the liquid metering pump so as to discharge the specified quantity of the liquid from the plunger pump.
Has the advantages that: according to the liquid metering pump, the plunger can be driven to move for a preset distance relative to the pump body according to the amount of the poured liquid through the driving device, the electrolyte pouring equipment and the liquid pouring method, the relative position and/or angle between the output end of the driving device and the plunger is adjusted through the correcting device in the process that the driving device drives the plunger to move, the transmission error caused by the force which is not parallel to the axial direction of the pump body in the transmission process is eliminated, the plunger synchronously moves along with the output component of the driving device along the axial direction of the pump body, and the precision of the plunger moving along the axial direction of the pump body is guaranteed. Since the amount of liquid entering or exiting the pump body is linear with the distance traveled by the plunger, the amount of liquid poured can be precisely controlled by precisely controlling the distance traveled by the plunger. And when the production requirement is changed, the liquid filling amount can be accurately changed only by the moving distance of the plunger, so that the manual adjustment process is saved, the adjustment time is saved, and the material waste is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without any creative effort, other drawings may be obtained according to the drawings, and these drawings are all within the protection scope of the present invention.
Fig. 1 is a schematic structural view of a liquid metering pump according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a driving device according to embodiment 2 of the present invention.
Fig. 3 is a schematic structural view of a transmission connection mechanism according to embodiment 2 of the present invention.
Fig. 4 is a partial structural schematic view of a transmission connection mechanism according to embodiment 2 of the present invention.
Fig. 5 is a schematic structural view of a liquid path control device according to embodiment 4 of the present invention.
Fig. 6 is a flowchart of a method of liquid pouring of embodiment 7 of the present invention.
Parts and numbering in the drawings: the
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is noted that, herein, relational terms such as first and second, and the like may 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. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Also, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the embodiments of the present invention and various features of the embodiments may be combined with each other within the scope of the present invention.
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