CN219622975U - Novel liquid filling valve - Google Patents

Abstract

The utility model discloses a novel liquid filling valve, and relates to the technical field of composite plates. The valve comprises a valve body, a large valve core and a small valve core, wherein the valve body is in sliding connection with the small valve core, the large valve core is positioned at the bottom of the valve body, a valve sleeve is arranged at the top of the valve body, the small valve core penetrates through the middle of the valve body, one end of the small valve core is nested in the valve sleeve, a spring is arranged on the outer side of the small valve core, the other end of the small valve core is in sliding connection with the large valve core, a spring cover is arranged at the top end of the small valve core, and a limiting part and a sleeve are arranged on the spring cover. According to the utility model, the valve body is internally provided with the large cavity, so that the weight of the liquid filling valve body can be reduced, the material consumption can be reduced, and the production cost can be reduced; the liquid filling valve also comprises a large valve core and a small valve core, so that the rapid and flexible opening and closing operation of the large valve core and the cavity can be realized, the structure is simple, the practicability is strong, and the parts are easy to manufacture and assemble.

Description

Novel liquid filling valve

Technical Field

The utility model belongs to the technical field of liquid filling valves, and particularly relates to a novel liquid filling valve.

Background

The liquid filling valve is widely applied to forging machines, high-speed punching machines, presses, injection molding machines and other machines. The press cylinder can play a role in quick oil filling and oil discharging in forging machinery. The device can play a role in unloading at high pressure and high flow, and avoid unloading impact. The charge valve is generally used as a suction/discharge valve between the hydraulic pressure and the tank. When the large press machine rapidly advances, the oil cylinder is required to supplement a large amount of oil, and oil is automatically absorbed into the oil tank; when the hydraulic cylinder is pressurized slowly, oil is prevented from flowing back from the oil cylinder to the oil tank. The oil can be discharged from the oil cylinder to the oil return tank during the reverse direction. The liquid filling valve can enable the piston to be rapidly filled and discharged under the pressure effect, and can also set pre-opening pressure, so that the liquid filling valve has reliable sealing performance. The processing is fine, the precision is high, no leakage exists, and the pressure maintaining performance is good. The self-driven valve core can effectively reduce the moving sound and vibration.

However, the prior filling valve has the following defects in use:

the existing liquid filling valve body is large in volume and weight, is not beneficial to installation, is low in production efficiency, uses more materials and is high in production cost; the oil inlet and oil discharge speed of the oil cylinder is low, and the oil cylinder is difficult to adapt to high-strength and high-frequency use scenes.

There is therefore a need for improvements in the art to address the above-described problems.

Disclosure of Invention

The utility model aims to provide a novel liquid filling valve, which realizes the opening and closing of cavities of a large valve core and a valve body by utilizing pressure difference and a spring in a cylinder during oil feeding by improving the combined structure and the appearance of the large valve core and the small valve core, and realizes the boosting and the pressure maintaining in the cylinder; the large valve core is provided with an oil return hole, when oil is discharged, pressure difference is skillfully manufactured by opening and closing the large valve core and the small valve core, then the opening and closing of the large valve core and the cavity of the valve body are rapidly adjusted, oil is rapidly discharged, hydraulic oil and the oil cylinder are timely separated by utilizing elastic deformation of the spring, and rapid oil discharge is realized.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model provides a novel liquid filling valve, includes valve body, big case, little case, the valve body with little case sliding connection, big case is located the valve body bottom, the valve body top is provided with the valve pocket, little case runs through the valve body middle part, the valve body is provided with oil duct entry, upper seal circle, lower seal circle, cavity, be provided with interior oil duct in the valve pocket, the top is provided with the oil duct export, is provided with the end cap on the lateral wall, interior oil duct with oil duct entry intercommunication, big case is provided with the oil gallery, hydraulic oil warp the oil gallery gets into the cavity.

Preferably, one end of the small valve core is nested in the valve sleeve, a spring is arranged on the outer side of the small valve core, and the other end of the small valve core is connected with the large valve core in a sliding mode.

Preferably, the top end of the small valve core is provided with a spring cover, the spring cover is provided with a limiting part and a sleeve, the small valve core is fixedly nested in the sleeve, and a spring sleeve is arranged between the spring cover and the valve sleeve.

Preferably, a supporting table is arranged on the valve body, a spring fixing ring is arranged in the middle of the supporting table, and the spring is located between the spring fixing ring and the limiting part.

Preferably, the valve sleeve is fixedly connected with the valve body through hexagonal screws, and the number of the hexagonal screws is four.

Preferably, the number of the oil return holes is six.

Preferably, the bottom of the large valve core is provided with a valve core nut.

The valve body is internally provided with the cavity, the space of the cavity is large, the weight of the liquid filling valve body can be reduced, the installation is convenient, the production efficiency is improved, the material consumption is reduced, the production cost is reduced, and hydraulic oil can be injected into or discharged from the oil cylinder through the cavity in a large quantity and quickly, so that the liquid filling valve is suitable for use in high-strength and high-frequency use scenes.

The liquid filling valve also comprises a large valve core and a small valve core, and the small valve core is pressurized by utilizing the oil cylinder to generate negative pressure or the external regulating oil cylinder, so that the rapid and flexible opening and closing operation of the large valve core and the cavity is realized, the structure is simple, the practicability is strong, and the parts are easy to manufacture and assemble.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view in the direction A of FIG. 1;

FIG. 3 is a schematic exploded view of the present utility model;

FIG. 4 is an oblique view of the present utility model;

FIG. 5 is a schematic view of the structure of the valve body;

FIG. 6 is a schematic view of the structure of the jacket;

FIG. 7 is a schematic view of the structure of the spring cover;

FIG. 8 is a cross-sectional view of the central axis of the spring cover;

FIG. 9 is a schematic diagram of the structure of a large valve core;

FIG. 10 is a cross-sectional view of the central axis of the large spool;

FIG. 11 is a schematic diagram of a combination of a large valve core and a small valve core;

FIG. 12 is a cross-sectional view taken in direction B of FIG. 11;

fig. 13 is a cross-sectional view of a central axis of the combination of the present utility model and a cylinder.

The list of components represented by each reference numeral is as follows:

1-valve body, 101-oil duct inlet, 102-upper sealing ring, 103-lower sealing ring, 104-cavity, 105-supporting platform, 10501-spring fixing ring, 2-valve sleeve, 201-plug, 202-inner oil duct, 20201-oil duct outlet, 3-large valve core, 301-oil return hole, 4-small valve core, 5-valve core nut, 6-spring, 7-elastic sleeve, 8-spring cover, 801-limit part, 802-sleeve, 9-hexagonal screw, 10-upper cylinder and 11-lower cylinder.

Description of the embodiments

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-13, the utility model discloses a novel liquid filling valve, which comprises a valve body 1, a large valve core 3 and a small valve core 4, wherein the valve body 1 is in sliding connection with the small valve core 4, the large valve core 3 is positioned at the bottom of the valve body 1, a valve core nut 5 is arranged at the bottom of the large valve core 3, a valve sleeve 2 is arranged at the top of the valve body 1, and the small valve core 4 penetrates through the middle part of the valve body 1. Specifically, one end of the small valve core 4 is nested in the valve sleeve 2, the outer side is provided with a spring 6, and the other end is in sliding connection with the large valve core 3. The top end of the small valve core 4 is provided with a spring cover 8, the spring cover 8 is provided with a limiting part 801 and a sleeve 802, the small valve core 4 is fixedly nested in the sleeve 802, and a spring sleeve 7 is arranged between the spring cover 8 and the valve sleeve 2. When the small valve core 4 is subjected to the external force of hydraulic oil to move downwards in use, the spring 6 can deform, and when the external force is eliminated, the spring 6 can restore to the original state and reversely push the small valve core 4, so that the structure is simple and practical.

The valve body 1 is provided with a supporting table 105, the middle part of the supporting table 105 is provided with a spring fixing ring 10501, a spring 6 is positioned between the spring fixing ring 10501 and the limiting part 801, and the spring 6 is always kept vertical, so that displacement is avoided.

The valve body 1 is provided with an oil duct inlet 101, an upper sealing ring 102, a lower sealing ring 103 and a cavity 104, an inner oil duct 202 is arranged in the valve sleeve 2, an oil duct outlet 20201 is arranged at the top, a plug 201 is arranged on the side wall, and the inner oil duct 202 is communicated with the oil duct inlet 101. The liquid filling valve body is connected between the upper oil cylinder 10 and the lower oil cylinder 11, and the upper sealing ring 102 and the lower sealing ring 103 can effectively eliminate a gap between the liquid filling valve body and the oil cylinder and prevent hydraulic oil from leaking.

The valve sleeve 2 is fixedly connected with the valve body 1 through hexagonal screws 9, and the number of the hexagonal screws 9 is four. The valve sleeve 2 is tightly attached to the valve body 1.

The large valve core 3 is provided with an oil return hole 301, and hydraulic oil enters the cavity 104 through the oil return hole 301. The number of the oil return holes 301 is six. The oil return holes 301 are uniformly distributed on the outer side of the large valve core 3, and when hydraulic oil is relieved through the oil return holes 301, the oil inlet quantity can be increased, and the reaction is quicker and more efficient.

The utility model also specifically works in the following steps:

step one: the liquid filling valve body is arranged between the upper oil cylinder 10 and the lower oil cylinder 11, and the oil duct inlet 101 is connected with an external adjusting oil cylinder;

step two: in the oil supplementing mode of the lower oil cylinder 11, when the hydraulic shaft 1101 of the lower oil cylinder 11 moves downwards, negative pressure is formed in the lower oil cylinder 11;

step three: the pressure of the external regulating cylinder is larger than the pressure in the lower cylinder 11, hydraulic oil enters the cavity of the valve sleeve 2 through the oil duct inlet 101 and the inner oil duct 202 and enters the cavity of the valve sleeve 2 through the oil duct outlet 20201, the hydraulic oil presses the elastic sleeve 7, the elastic sleeve 7 is descended by external force, and as the spring cover 8 is arranged between the elastic sleeve 7 and the small valve core 4, the spring 6 is extruded by the spring cover 8 when the elastic sleeve 7 descends, the spring 6 deforms, elastic potential energy is reserved, and the large valve core 3 and the small valve core 4 descend simultaneously;

step four: the lower oil cylinder 11 is communicated with the cavity 104 of the valve body 1 and the upper oil cylinder 10 when the large valve core 3 descends, the external adjusting oil cylinder stops oiling, hydraulic oil of the upper oil cylinder 10 enters the lower oil cylinder 11, after the space in the lower oil cylinder 11 is filled with the hydraulic oil, the in-cylinder pressure is in a balanced state, the spring 6 is not influenced by external force any more to restore the original length, the large valve core 3 and the small valve core 4 are driven to ascend, the large valve core 3 blocks the cavity 104 again, the upper oil cylinder 10 and the lower oil cylinder 11 are separated, the lower oil cylinder 11 keeps generating proper working pressure, and external devices are driven or supported;

step five: when the lower oil cylinder 11 is in an oil charging state and needs oil discharging and pressure relief, firstly, oil is injected into the valve sleeve 2 through the oil duct inlet 101 and the inner oil duct 202 by the external adjusting oil cylinder to pressurize, so that the small valve core 4 moves downwards, a gap is formed between the small valve core 4 and the large valve core 3, hydraulic oil in the lower oil cylinder 11 enters the cavity 104 through the oil return hole 301 of the large valve core 3, the pressure in the lower oil cylinder 11 starts to drop, at the moment, the external adjusting oil cylinder continuously injects oil into the valve sleeve 2, so that the small valve core 4 pushes the large valve core 3 to drop, the lower oil cylinder 11 is communicated with the cavity 104 and the upper oil cylinder 10, and the hydraulic shaft 1101 rapidly discharges the hydraulic oil in the cylinder;

step six: after the oil discharge of the lower oil cylinder 11 is completed, the external regulating oil cylinder simultaneously stops oil injection, the small valve core 4 drives the large valve core 3 to restore to the original position under the elastic action of the spring 6, and the large valve core 3 blocks the cavity 104 again to isolate the upper oil cylinder 10 from the lower oil cylinder 11.

The cavity 104 is arranged in the valve body 1, the space of the cavity 104 is large, the weight of the liquid filling valve body can be reduced, the installation is convenient, the production efficiency is improved, the material consumption is reduced, the production cost is reduced, and hydraulic oil can be injected or discharged into or out of the oil cylinder through the cavity in a large quantity and quickly, so that the liquid filling valve is suitable for use in high-strength and high-frequency use scenes.

The liquid filling valve also comprises a small valve core 4 and a large valve core 3, and the small valve core 4 is pressurized by utilizing an oil cylinder to generate negative pressure or an external regulating oil cylinder, so that the rapid and flexible opening and closing operation of the large valve core 3 and the cavity 104 is realized, and the liquid filling valve has a simple structure, strong practicability and simple and convenient part manufacture and assembly.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, and any modification of the technical solutions described in the foregoing embodiments, and equivalent substitution of some technical features thereof, falls within the scope of the present utility model.

Claims (7)

1. The utility model provides a novel liquid filling valve, its characterized in that, including valve body (1), big case (3), little case (4), valve body (1) with little case (4) sliding connection, big case (3) are located valve body (1) bottom, valve body (1) top is provided with valve pocket (2), little case (4) run through valve body (1) middle part, valve body (1) are provided with oil duct entry (101), go up sealing washer (102), lower sealing washer (103), cavity (104), be provided with interior oil duct (202) in valve pocket (2), the top is provided with oil duct export (20201), be provided with end cap (201) on the lateral wall, interior oil duct (202) with oil duct entry (101) intercommunication, big case (3) are provided with oil return hole (301), hydraulic oil warp oil return hole (301) are gone into cavity (104).

2. The novel liquid filling valve according to claim 1, wherein one end of the small valve core (4) is nested in the valve sleeve (2), a spring (6) is arranged on the outer side of the small valve core, and the other end of the small valve core is in sliding connection with the large valve core (3).

3. The novel liquid filling valve according to claim 2, wherein a spring cover (8) is arranged at the top end of the small valve core (4), a limiting part (801) and a sleeve (802) are arranged on the spring cover (8), the small valve core (4) is fixedly nested in the sleeve (802), and a spring sleeve (7) is arranged between the spring cover (8) and the valve sleeve (2).

4. The novel liquid filling valve according to claim 3, wherein a supporting table (105) is arranged on the valve body (1), a spring fixing ring (10501) is arranged in the middle of the supporting table (105), and the spring (6) is located between the spring fixing ring (10501) and the limiting part (801).

5. The novel liquid filling valve according to claim 2, wherein the valve sleeve (2) is fixedly connected with the valve body (1) through hexagonal screws (9), and the number of the hexagonal screws (9) is four.

6. The novel charging valve according to claim 4, wherein the number of oil return holes (301) is six.

7. The novel charging valve according to any one of claims 1-6, characterized in that the bottom of the large valve core (3) is provided with a valve core nut (5).