CN210566470U

CN210566470U - One-way valve and vacuumizing liquid injection device

Info

Publication number: CN210566470U
Application number: CN201921223845.1U
Authority: CN
Inventors: 李浩宇; 汪涛; 杨文琪; 王伟
Original assignee: Bozhon Precision Industry Technology Co Ltd
Current assignee: Bozhon Precision Industry Technology Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-05-19
Anticipated expiration: 2029-07-31

Abstract

A one-way valve and a vacuumizing liquid injection device belong to the technical field of battery core manufacturing. The one-way valve comprises a valve body and a valve rod arranged in the valve body, wherein an electrolyte flow passage is arranged in the valve rod, a flexible sealing ring is fixed on the valve body far away from the inlet end of the electrolyte flow passage in the valve rod, and the flexible sealing ring is in interference fit with the valve rod to compress the valve rod; a sealing element is clamped and fixed on the valve body corresponding to the valve rod, and an elastic compression element is sleeved on the valve rod; the elastic compression piece is compressed, and the valve rod extends out of the flexible sealing ring to expose the outlet end of the electrolyte flow passage; the elastic compression piece resets and tensions, the valve rod retracts, and the outlet end of the electrolyte flow passage retracts to keep a sealing state. The utility model adopts two sealing structures, has better sealing effect and can reach the upper limit of the high vacuum degree of-100 KPa.

Description

One-way valve and vacuumizing liquid injection device

Technical Field

The utility model relates to a technique in the electric core field of making specifically is a check valve and evacuation priming device.

Background

The vacuumizing liquid injection device generally adopts a one-way valve to realize sealing and electrolyte injection. The loss of the sealing ring of the existing one-way valve is large, the vacuum degree is generally not more than-80 KPa, and the production requirements of high liquid injection rate and high vacuum degree are difficult to meet.

In order to solve the above problems existing in the prior art, the utility model discloses come from this.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the above-mentioned not enough to prior art exists provides a check valve and evacuation priming device, adopts two kinds of seal structure, has better closed effect, can reach-100 KPa's high vacuum upper limit.

The utility model relates to a one-way valve, which comprises a valve body and a valve rod arranged in the valve body, wherein an electrolyte flow channel is arranged in the valve rod, a flexible sealing ring is fixed at the inlet end of the electrolyte flow channel far away from the valve rod on the valve body, and the flexible sealing ring is in interference fit with the valve rod to compress the valve rod; a sealing element is clamped and fixed on the valve body corresponding to the valve rod, and an elastic compression element is sleeved on the valve rod; the elastic compression piece is compressed, and the valve rod extends out of the flexible sealing ring to expose the outlet end of the electrolyte flow passage; the elastic compression piece resets and tensions, the valve rod retracts, and the outlet end of the electrolyte flow passage retracts to keep a sealing state.

Preferably, the sealing element adopts an O-shaped ring, and at least two sealing elements are arranged along the axial direction of the valve body.

Preferably, the elastic compression member is a compression spring.

Preferably, the valve rod is the notch cuttype structure at electrolyte runner entry end, corresponds the notch cuttype structure, the valve body is equipped with the top board for push down the valve rod when elastic compression spare is in the tensioning state.

The utility model relates to a vacuum pumping priming device, including above-mentioned check valve.

Technical effects

Compared with the prior art, the utility model has the following technical effects;

1) under the non-liquid injection state, the elastic compression piece is in a tensioning state and is favorable for keeping the stability of the vacuum environment by matching with the upper pressure plate; the elastic compression piece has the advantages of convenient operation, high coaxiality, good self-returning property and the like;

2) the sealing element is clamped and fixed on the valve body and adopts internal sealing, so that the defect of large loss caused by external sealing when the sealing element is clamped and fixed on the valve rod is overcome, the loss rate of vulnerable parts is reduced, and the cost is greatly saved;

3) by adopting the sealing element and the flexible sealing ring for double sealing, the high vacuum upper limit of-100 KPa can be reached in a vacuum state.

Drawings

FIG. 1 is a schematic structural view of a vacuum pumping and liquid injection device in example 1;

FIG. 2 is a schematic structural view of the check valve in the filling state (the outlet end of the electrolyte flow path is extended) in example 1;

FIG. 3 is a schematic sectional view of a check valve (outlet end of the electrolyte flow path is protruded) in example 1;

FIG. 4 is a schematic view of a valve stem structure in embodiment 1;

in the figure:

a check valve 100, a liquid injection device body 200;

the valve comprises a valve body 1, a valve rod 2, an electrolyte flow channel 3, a flexible sealing ring 4, an O-shaped ring 5, a compression spring 6 and an upper pressure plate 7.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1 and fig. 3, the present embodiment relates to a vacuum-pumping liquid injection device, which includes a check valve 100, wherein the check valve 100 is disposed on a liquid injection device body 200 and sealed by an O-ring 5.

As shown in fig. 2, 3 and 4, the check valve 100 includes a valve body 1 and a valve rod 2 disposed in the valve body 1, an electrolyte flow channel 3 is disposed in the valve rod 2, a flexible sealing ring 4 is fixed on the valve body 1 far from an inlet end of the electrolyte flow channel in the valve rod, and the flexible sealing ring 4 is in interference fit with the valve rod 2 to press the valve rod 2; an O-shaped ring 5 is fixedly clamped on the valve body 1 corresponding to the valve rod 2, at least two O-shaped rings 5 are arranged along the axial direction of the valve body, and a compression spring 6 is sleeved on the valve rod 2;

the compression spring 6 is compressed, and the valve rod 2 extends out of the flexible sealing ring 4 to expose the outlet end of the electrolyte flow channel; the compression spring 6 is reset and tensioned, the valve rod 2 retracts, and the outlet end of the electrolyte flow passage retracts to keep a sealing state.

The valve rod 2 is of a step structure at the inlet end of the electrolyte flow channel, corresponds to the step structure, and the valve body 1 is also provided with the step structure and is provided with an upper pressure plate 7 for pressing the valve rod when the compression spring is in a tensioning state.

The upper pressure plate 7 is fixed on the valve body 1 in a threaded manner, so that the valve is convenient to disassemble and assemble and is beneficial to maintenance of the one-way valve.

In the embodiment, the one-way valve can keep the vacuum sealing state of the vacuum pumping liquid injection device while the electrolyte is introduced; the O-shaped ring is clamped on the valve body by utilizing the phenomenon that the abrasion of the inner ring of the O-shaped ring is far smaller than that of the outer ring in practical application, and the high vacuum upper limit of-100 KPa can be reached in a vacuum state by adopting a double-ring structure and combining the flexible sealing ring 4 with the valve rod in interference fit.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A one-way valve is characterized by comprising a valve body and a valve rod arranged in the valve body, wherein an electrolyte flow passage is arranged in the valve rod, a flexible sealing ring is fixed at the inlet end of the electrolyte flow passage far away from the valve rod on the valve body, and the flexible sealing ring is in interference fit with the valve rod to tightly press the valve rod; a sealing element is clamped and fixed on the valve body corresponding to the valve rod, and an elastic compression element is sleeved on the valve rod; the elastic compression piece is compressed, and the valve rod extends out of the flexible sealing ring to expose the outlet end of the electrolyte flow passage; the elastic compression piece resets and tensions, the valve rod retracts, and the outlet end of the electrolyte flow passage retracts to keep a sealing state.

2. The check valve of claim 1, wherein the sealing member is an O-ring and is provided at least two times in an axial direction of the valve body.

3. The check valve of claim 1 wherein said resilient compression member is a compression spring.

4. The check valve of claim 1, wherein said valve stem is stepped at the inlet end of the electrolyte flow passage, said valve body having an upper pressing plate for pressing the valve stem when the elastic compression member is in a tensioned state.

5. An evacuated infusion device comprising a one-way valve according to any one of claims 1 to 4.