CN220731749U - High-capacity plunger liquid injection device - Google Patents

Abstract

The utility model provides a high-capacity plunger liquid injection device which comprises a driving assembly, a pump body assembly and a valve assembly, wherein the pump body assembly comprises a pump shell and a pump core, the valve assembly comprises a valve driving part and a switching valve, the switching valve is connected with a medium inlet pipe and a medium outlet pipe, when liquid is injected, the valve driving part can drive the switching valve to rotate so that the medium inlet pipe is communicated with a containing cavity, the driving assembly can drive the pump core to move in the pump shell in a direction away from the valve assembly, working medium is sucked into the containing cavity through the medium inlet pipe to finish liquid suction, the valve driving part drives the switching valve to rotate so that the medium outlet pipe is communicated with the containing cavity, and the driving assembly drives the pump core to move in the pump shell in a direction close to the valve assembly so that working medium in the containing cavity is pushed out through the medium outlet pipe to finish liquid injection. The utility model can realize the continuous liquid injection function without a dynamic sealing ring, has high liquid injection precision, large liquid injection amount in one mechanical movement and high liquid injection efficiency.

Description

High-capacity plunger liquid injection device

[ field of technology ]

The utility model relates to the technical field of liquid injection, in particular to a high-capacity plunger liquid injection device.

[ background Art ]

At present, the capacity of each energy storage lithium battery is made larger and larger, so that the requirements on the liquid injection amount and the liquid injection precision of a liquid injection device are higher, part of manufacturers adopt the processes of one-time liquid injection or two-time liquid injection of a sleeve cup type, the liquid injection amount of a traditional liquid injection pump is limited, the liquid injection amount of a large-capacity battery needs to be accumulated by multiple circulating mechanical movements or the liquid injection is carried out in a divided manner, the liquid injection precision cannot be met by the error value in the accumulation of the multiple circulating mechanical movements, and the existing liquid injection device needs a dynamic sealing ring and has low liquid injection efficiency.

In view of the above, it is desirable to provide a new high-capacity plunger priming device that overcomes the above-described drawbacks.

[ utility model ]

The utility model aims to provide a high-capacity plunger liquid injection device which can realize a continuous liquid injection function, a pump body with a linear plunger structure is formed by a pump shell and a pump core, a dynamic sealing ring is not needed, the liquid injection precision is high, the liquid injection amount of one-time mechanical movement is large, and the liquid injection efficiency is high.

In order to achieve the above object, the present utility model provides a high-capacity plunger liquid injection device, which comprises a driving component, a pump body component and a valve component, wherein the pump body component comprises a pump shell and a pump core, the pump shell is provided with a containing cavity, the pump core is movably contained in the containing cavity, the driving component is connected with one end of the pump core, the valve component is fixed at one end of the pump shell far away from the driving component, the valve component comprises a valve driving component and a switching valve connected with the valve driving component, and the switching valve is connected with a medium inlet pipe and a medium outlet pipe; the valve driving piece is used for driving the switching valve to enable the medium inlet pipe or the medium outlet pipe to be communicated with the containing cavity, and the driving component is used for driving the pump core to move in the pump shell so as to achieve liquid suction when the medium inlet pipe is communicated with the containing cavity or liquid injection when the medium outlet pipe is communicated with the containing cavity.

In a preferred embodiment, the switching valve comprises a valve core and a hollow valve sleeve, the valve core is accommodated in the valve sleeve, the valve sleeve is provided with a connecting port communicated with the accommodating cavity, an inlet communicated with the medium inlet pipe and an outlet communicated with the medium outlet pipe, and the valve driving piece is used for driving the valve core to rotate in the valve sleeve so that the connecting port is communicated with the inlet or the outlet.

In a preferred embodiment, the valve element is notched, and the valve element rotates within the valve housing such that the notch is positioned opposite the inlet or outlet, thereby placing the connection port in communication with the inlet or outlet.

In a preferred embodiment, the switching valve further comprises a valve seat fixed at an end of the pump housing remote from the drive assembly, the valve core and valve sleeve being fixed within the valve seat.

In a preferred embodiment, a swivel arm is provided on one side of the valve seat, the swivel arm being connected to the valve core.

In a preferred embodiment, the valve driver is fixed to one side of the pump housing, and the valve driver is connected to the rotating arm.

In a preferred embodiment, the driving assembly comprises a pump body driving member, a transmission member and a clamping block, wherein the pump body driving member is connected with the transmission member, the clamping block is fixed on the transmission member, and one end, far away from the valve assembly, of the pump core is fixed on the clamping block.

In a preferred embodiment, the transmission member includes a screw rod, two vertical plates arranged in parallel, and a slide plate arranged on the two vertical plates, one end of the screw rod is connected with the pump body driving member, the other end of the screw rod is connected with the slide plate, and the clamping block is fixed on the slide plate.

In a preferred embodiment, a solenoid valve is also included, the solenoid valve being used to control the valve actuator.

In a preferred embodiment, the valve actuator is a cylinder.

Compared with the prior art, the high-capacity plunger liquid injection device comprises the driving component, the pump body component and the valve component, wherein the pump body component comprises the pump shell and the pump core, the pump shell is provided with the accommodating cavity, the pump core is movably accommodated in the accommodating cavity, the driving component is connected with one end of the pump core, the valve component is fixed at one end of the pump shell far away from the driving component, the valve component comprises the valve driving component and the switching valve connected with the valve driving component, the switching valve is connected with the medium inlet pipe and the medium outlet pipe, when liquid injection is carried out, the valve driving component can drive the switching valve to rotate so that the medium inlet pipe is communicated with the accommodating cavity, the driving component can drive the pump core to move in the direction far away from the valve component in the pump shell so that working medium is sucked into the accommodating cavity through the medium inlet pipe, liquid suction is completed, the switching valve is driven by the driving component to move in the direction close to the valve component in the pump shell so that working medium in the accommodating cavity is pushed out through the medium outlet pipe, liquid injection is completed, and thus the switching valve is repeatedly moved, a continuous liquid injection function can be realized, and the pump shell is free from linear liquid injection structure is formed, and the mechanical liquid injection precision is high, and the liquid injection precision is achieved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a high capacity plunger priming device provided by the present utility model;

FIG. 2 is a further perspective view of a high capacity plunger priming device according to the present utility model;

FIG. 3 is a plan view of a high capacity plunger priming device according to the present utility model;

FIG. 4 is a further plan view of a high capacity plunger priming device according to the present utility model;

fig. 5 is a further plan view of the high-capacity plunger priming device of the present utility model.

[ detailed description ] of the utility model

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

Referring to fig. 1 and 2, the high-capacity plunger electrolyte injection device 100 provided by the present utility model can be used for injecting electrolyte into an energy storage lithium battery. Referring to fig. 3 to 5, in particular, the high-capacity plunger priming device 100 includes a driving assembly 10, a pump body assembly 20, and a valve assembly 30.

The pump body assembly 20 comprises a pump shell 21 and a pump core 22, wherein the pump shell 21 is provided with a containing cavity 211, and the pump core 22 is movably contained in the containing cavity 211. The drive assembly 10 is connected to one end of the pump core 22 and the valve assembly 30 is secured to the end of the pump housing 21 remote from the drive assembly 10. The valve assembly 30 includes a valve driving member 31 and a switching valve 32 connected to the valve driving member 31, and the switching valve 32 is connected to a medium inlet pipe 33 and a medium outlet pipe 34.

The valve driving part 31 is used for driving the switching valve 32 to enable the medium inlet pipe 33 or the medium outlet pipe 34 to be communicated with the accommodating cavity 211, and the driving assembly 10 is used for driving the pump core 22 to move in the pump shell 21 so as to realize liquid suction when the medium inlet pipe 33 is communicated with the accommodating cavity 211 or liquid injection when the medium outlet pipe 34 is communicated with the accommodating cavity 211. Specifically, the valve driving part 31 is used for driving the switching valve 32 to enable the medium inlet pipe 33 to be communicated with the accommodating cavity 211, and the driving assembly 10 is used for driving the pump core 22 to move in the pump shell 21 in a direction away from the valve assembly 30 so as to enable working medium to be sucked into the accommodating cavity 211 through the medium inlet pipe 33; the valve driving part 31 is further used for driving the switching valve 32 to enable the medium outlet pipe 34 to be communicated with the accommodating cavity 211, and the driving assembly 10 is further used for driving the pump core 22 to move in the pump shell 21 towards the direction approaching to the valve assembly 30 so as to enable working medium in the accommodating cavity 211 to be pushed out through the medium outlet pipe 34.

As can be appreciated, when the liquid is injected, firstly, the valve driving member 31 drives the switching valve 32 to communicate the medium inlet pipe 33 with the accommodating cavity 211, and then the driving assembly 10 drives the pump core 22 to move in the pump housing 21 in a direction away from the valve assembly 30, so that the working medium is sucked into the accommodating cavity 211 through the medium inlet pipe 33 to complete liquid suction; secondly, the valve driving part 31 drives the switching valve 32 to enable the medium outlet pipe 34 to be communicated with the accommodating cavity 211, and finally, the driving assembly 10 drives the pump core 22 to move in the pump shell 21 towards the direction close to the valve assembly 30, so that the working medium in the accommodating cavity 211 is pushed out through the medium outlet pipe 34 to finish liquid injection, and the continuous liquid injection function can be realized through repeated circulation movement.

Therefore, the high-capacity plunger priming device 100 provided by the utility model comprises the driving component 10, the pump body component 20 and the valve component 30, wherein the pump body component 20 comprises the pump shell 21 and the pump core 22, the pump shell 21 is provided with the accommodating cavity 211, the pump core 22 is movably accommodated in the accommodating cavity 211, the driving component 10 is connected with one end of the pump core 22, the valve component 30 is fixed at one end of the pump shell 21 far away from the driving component 10, the valve component 30 comprises the valve driving component 31 and the switching valve 32 connected with the valve driving component 31, the switching valve 32 is connected with the medium inlet pipe 33 and the medium outlet pipe 34, when priming is carried out, the valve driving component 31 can drive the switching valve 32 to rotate so that the medium inlet pipe 33 is communicated with the accommodating cavity 211, the driving component 10 can drive the pump core 22 in the pump shell 21 to move in a direction far away from the valve component 30, so that working medium is sucked into the accommodating cavity 211 through the medium inlet pipe 33, liquid suction is completed, the valve driving component 31 drives the switching valve 32 to rotate so that the medium outlet pipe 34 is communicated with the accommodating cavity 211, the driving component 10 drives the pump core 22 in the direction close to the valve component 21 in the pump shell 21, the direction of the medium inlet pipe is continuously moved in a linear direction, the high-precision can be injected into the pump shell, and the high-speed can realize the priming performance of the fluid can be linearly injected in a high-quality, and the priming structure is achieved, and the priming can be achieved.

The driving assembly 10 comprises a pump body driving member 11, a transmission member 12 and a clamping block 13, wherein the pump body driving member 11 is connected with the transmission member 12, the clamping block 13 is fixed on the transmission member 12, and one end, far away from the valve assembly 30, of the pump core 22 is fixed on the clamping block 13. Specifically, the high-capacity plunger priming device 100 further includes a base 101, where the base 101 is used to carry a pump body driving member 11, a driving member 12, and a clamping block 13, where the driving member 11 may be, but is not limited to, a servo motor, and the driving member 11 can drive the driving member 12 to move and drive the clamping block 13 and a pump core 22 fixedly connected with the clamping block 13 to move, so as to realize liquid suction or priming. In the present embodiment, the clamping block 13 is provided with a fixing groove, and one end of the pump core 22 is fixed in the fixing groove.

Further, the transmission member 12 includes a screw rod 121, two parallel vertical plates 122, and a sliding plate 123 disposed on the two vertical plates, one end of the screw rod 121 is connected to the pump body driving member 11, the other end of the screw rod 121 is connected to the sliding plate 123, and the clamping block 13 is fixed on the sliding plate 123. It can be appreciated that two vertical plates 122 are fixed on the base 101, the two vertical plates 122 are parallel and spaced, the screw rod 121 is located between the two vertical plates 122, the surfaces of the two vertical plates 122 far away from the base 101 can form a pair of sliding rails, and the sliding plate 123 is movably arranged on the sliding rails. It can be understood that the pump body driving member 11 can drive the screw rod 121 and drive the sliding plate 123 to slide on the two vertical plates 122, so as to drive the clamping block 13 on the sliding plate 123 and the pump core fixed in the clamping block 13 to move, thereby realizing liquid suction or liquid injection.

In this embodiment, a carrier 102 is fixed to the base 101, the carrier 102 is disposed at one end of the base 101 near the pump body assembly 20, and the carrier 102 is used for carrying the pump body assembly 20.

The pump body assembly 20 comprises a pump shell 21 and a pump core 22, wherein the pump shell 21 is provided with a containing cavity 211, and the pump core 22 is movably contained in the containing cavity 211. Specifically, a pump body inlet and outlet 212 communicating with the accommodating cavity 211 is provided at one end of the pump casing 21 away from the driving assembly 10, and the pump body inlet and outlet 212 is used for communicating with the valve assembly 30 to realize medium inlet and outlet into and out of the pump body. The pump shell 21 is approximately rectangular, and the shape and the size of the accommodating cavity 211 formed in the pump shell 21 are basically consistent with those of the pump core 22, so that the pump shell 21 and the pump core 22 form a linear plunger structure, a dynamic sealing ring is not needed for a pump body of the piston structure, the service life is long, the liquid injection amount of one mechanical movement is large, the single liquid injection efficiency is high, the liquid injection amount is accurate, and the periodic maintenance is convenient. In the present embodiment, the pump casing 21 and the pump core 22 are high wear-resistant ceramic pump sleeve pump cores, and have the advantages of corrosion resistance, reliability and durability.

The valve assembly 30 comprises a valve driving member 31 and a switching valve 32 connected with the valve driving member 31, wherein the switching valve 32 is connected with a medium inlet pipe 33 and a medium outlet pipe 34. Further, the switching valve 32 includes a valve body 35 and a hollow valve housing 36, the valve body 35 is accommodated in the valve housing 36, the valve housing 36 is provided with a connection port 361 communicating with the accommodating cavity, an inlet 362 communicating with the medium inlet pipe 33, and an outlet 363 communicating with the medium outlet pipe 34, and the valve driving member 31 is used for driving the valve body 35 to rotate in the valve housing 36 so that the connection port 361 communicates with the inlet 362 or the outlet 363. Specifically, the connection port 361 communicates with the housing chamber 211 through the pump body inlet/outlet 212 of the pump housing 21.

Further, the valve body 35 is provided with a notch 351, and the valve body 35 can rotate in the valve housing 36 to enable the notch 351 to be opposite to the inlet 362 or the outlet 363, and further enable the connection port 361 to be communicated with the inlet 362 or the outlet 363. As will be appreciated, when the valve drive 31 drives the valve cartridge 35 to rotate such that the notch 351 of the valve cartridge 35 is positioned opposite the inlet 362, i.e., the connection port 361 communicates with the inlet 362, i.e., the media inlet tube 33 communicates with the receiving cavity 211 of the pump housing 21, to achieve fluid suction; when the valve driver 31 drives the valve core 35 to rotate so that the notch 351 of the valve core 35 is opposite to the outlet 363, that is, the connection port 361 communicates with the outlet 363, that is, the medium outlet pipe 34 communicates with the housing cavity 211 of the pump housing 21, to achieve the injection. The valve component 30 designed by the utility model is a mechanical rotary valve, does not need an external one-way valve, has good sealing performance and can prevent electrolyte from crystallizing. The switching valve 32 is made of ceramic material, and the ceramic rotary valve is corrosion-resistant, reliable and durable.

The switching valve 32 further comprises a valve seat 37, the valve seat 37 is fixed at one end of the pump housing 21 far away from the driving assembly 10, and the valve core 35 and the valve sleeve 36 are fixed in the valve seat 37. Specifically, the valve core 35 and the valve sleeve 36 are accommodated in the valve seat 37, and the inner medium inlet pipe 33 and the medium outlet pipe 34 pass through the valve seat 37 and extend from the outer surface of the valve seat 37, so that liquid suction or liquid injection is facilitated. A swivel arm 38 is provided on one side of the valve seat 37, said swivel arm 38 being connected to said valve element 35. Specifically, the valve driving part 31 is fixed on one side of the pump housing 21, the valve driving part 31 is connected with the rotating arm 38, and the valve driving part 31 can drive the rotating arm 38 to move, so as to drive the valve core 35 to rotate in the valve sleeve 36, thereby realizing switching between inlet and outlet. The valve driving piece 31 is specifically a cylinder, and the utility model adopts a cylinder to drive a ceramic valve core to rotate a mechanical valve system, and the opening and the closing of the inlet are switched by the rotation angles of the cylinder to drive the valve core and the rotating arm, so that the phenomenon that the one-way valve type liquid injection pump is easy to generate bubbles is avoided, and the reliability of practical use is ensured.

The high-capacity plunger priming device 100 provided by the present utility model further comprises a solenoid valve 40, wherein the solenoid valve 40 is used for controlling the valve driving member 31. Specifically, the solenoid valve 40 is fixed on the base 101, and the solenoid valve 40 is located at one side of the driving assembly 10, and the solenoid valve can send a control signal to the valve driving member 31 to further drive the valve core 35 to rotate. In this embodiment, as shown in fig. 1, the priming device 100 further includes a housing assembly 50, and the housing assembly 50 is disposed on the periphery of the driving assembly 10 and/or the pump body assembly 20 for protecting the driving assembly 10 and/or the pump body assembly 20.

Furthermore, the high-capacity plunger liquid injection device 100 provided by the utility model is externally connected with a PLC (programmable logic controller), can automatically set liquid injection amount and liquid injection speed, can automatically control the liquid injection amount according to electrolyte difference values on a weighing machine type, has the function of automatically adjusting the liquid injection amount, meets the requirements of batteries with different capacity types, and can correct error values of primary liquid injection through automatic compensation during secondary liquid injection, thereby further improving liquid injection precision.

The high-capacity plunger priming device 100 provided by the utility model is, in actual application, the equipment is initially: the ceramic pump core is pushed out to extend into the pump shell cavity, and the air cylinder is pushed out to enable the medium inlet pipe to be communicated with the pump shell cavity; the equipment works: the servo motor drives the screw rod, the screw rod rotates to link a clamping block connected with the pump core, so that the ceramic pump core is retracted, and working medium is sucked into a closed pump shell cavity from the medium inlet pipe to finish liquid suction; after the ceramic pump core retracts into the motor direction, the electromagnetic valve is operated to control the cylinder to retract and pull the rotating arm to rotate the switching valve core, the medium outlet pipe is communicated with the inside of the pump shell cavity, the servo motor drives the screw rod to rotate and link the clamping block connected with the pump core, so that the ceramic pump core extends forwards, the ceramic pump core is pushed inwards to reduce the volume in the pump shell cavity, so that liquid flows out through the medium outlet pipe, and liquid injection is completed. It can be understood that after that, the electromagnetic valve work control cylinder stretches out to push the rotating arm to rotate the switching valve core, so that the medium inlet pipe and the pump shell cavity are communicated back to the original equipment, and the circulating motion achieves the continuous liquid injection function.

In summary, the high-capacity plunger liquid injection device 100 provided by the utility model is a linear plunger variable pump, and the medium is extracted by a pump sleeve and a pump core piston structure, so that a dynamic sealing ring is not needed, and the repeated liquid injection precision is high. External PLC has the automatic regulation and annotates the liquid measure function, satisfies the battery of different capacity models, annotates the error value of liquid accessible automatic compensation correction primary injection at the secondary. The utility model specially designs a ceramic rotary valve for preventing electrolyte from crystallizing, and the valve core connecting rod is driven by a cylinder to rotate to switch the closing of the inlet and the outlet, so that the phenomenon that a one-way valve type liquid injection pump is easy to generate bubbles is avoided, and the reliability of practical use is ensured.

The foregoing description is only of embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the present utility model.

Claims (10)

1. The high-capacity plunger liquid injection device is characterized by comprising a driving assembly, a pump body assembly and a valve assembly, wherein the pump body assembly comprises a pump shell and a pump core, the pump shell is provided with a containing cavity, the pump core is movably contained in the containing cavity, the driving assembly is connected with one end of the pump core, the valve assembly is fixed at one end of the pump shell far away from the driving assembly, the valve assembly comprises a valve driving part and a switching valve connected with the valve driving part, and the switching valve is connected with a medium inlet pipe and a medium outlet pipe; the valve driving piece is used for driving the switching valve to enable the medium inlet pipe or the medium outlet pipe to be communicated with the containing cavity, and the driving component is used for driving the pump core to move in the pump shell so as to achieve liquid suction when the medium inlet pipe is communicated with the containing cavity or liquid injection when the medium outlet pipe is communicated with the containing cavity.

2. The high capacity plunger priming device as recited in claim 1, wherein said switching valve includes a valve core and a hollow valve housing, said valve core being housed within said valve housing, said valve housing defining a connection port communicating with said housing cavity, an inlet communicating with said medium inlet tube, and an outlet communicating with said medium outlet tube, said valve drive being adapted to drive said valve core to rotate within said valve housing to communicate said connection port with said inlet or outlet.

3. The high capacity plunger priming device of claim 2, wherein said valve core is notched, rotation of said valve core within said valve housing causing said notch to be positioned opposite said inlet or outlet, thereby causing said connection port to communicate with said inlet or outlet.

4. The high capacity plunger priming device of claim 2, wherein said switching valve further comprises a valve seat secured to an end of said pump housing remote from said drive assembly, said valve cartridge and valve sleeve being secured within said valve seat.

5. The high capacity plunger electrolyte injection apparatus as claimed in claim 4, wherein a rotary arm is provided at one side of the valve seat, the rotary arm being connected to the valve core.

6. The high capacity plunger electrolyte injection apparatus as recited in claim 5, wherein said valve actuator is fixed to one side of said pump housing, said valve actuator being coupled to said swivel arm.

7. The high capacity plunger priming device of claim 1, wherein said drive assembly comprises a pump body drive member, a transmission member, and a fixture block, said pump body drive member being coupled to said transmission member, said fixture block being secured to said transmission member, said pump core being secured to said fixture block at an end thereof remote from said valve assembly.

8. The high capacity plunger electrolyte injection apparatus as claimed in claim 7, wherein the driving member comprises a screw rod, two upright plates arranged in parallel, and a slide plate arranged on the two upright plates, one end of the screw rod is connected with the pump body driving member, the other end of the screw rod is connected with the slide plate, and the fixture block is fixed on the slide plate.

9. The high volume plunger priming device of claim 1, further comprising a solenoid valve for controlling said valve actuator.

10. A high capacity plunger electrolyte injection apparatus as defined in any one of claims 1-9, wherein said valve driving member is a cylinder.