CN218895043U

CN218895043U - Pilot-operated electromagnetic valve with valve opening and closing speed adjusting function

Info

Publication number: CN218895043U
Application number: CN202320518874.0U
Authority: CN
Inventors: 李新; 张金龙; 彭志海
Original assignee: Xinxiang Huahang Aviation Hydraulic Equipment Co ltd
Current assignee: Xinxiang Huahang Aviation Hydraulic Equipment Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-04-21
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses a pilot-operated electromagnetic valve with a speed regulation valve opening and closing function, which comprises a valve body, a pilot valve, a speed regulation valve I and a speed regulation valve II, wherein the speed regulation valve I comprises a shell and a speed regulation valve, the speed regulation valve is in sliding connection with the inner wall of the shell, a spring II is arranged between the speed regulation valve and the shell, the center of the lower end of the speed regulation valve is provided with a speed regulation valve orifice, the speed regulation valve orifice corresponds to an inlet II at the lower end of the shell, an outlet II is arranged on the shell, a communicating shell orifice communicated with the outlet II is arranged on the inner wall of a cavity of the shell, the speed regulation valve II has the same structure as the speed regulation valve I, and the pilot valve is respectively communicated with an interface on the valve body through a control gas circuit I, a control gas circuit II and a control gas circuit III; the inlet and outlet of the valve body are provided with speed regulating valves to regulate the opening and closing speed of the main valve of the electromagnetic valve, so as to meet the requirements of the electromagnetic valve on response time of slow opening and slow closing, fast opening and slow closing and slow opening and fast closing.

Description

Pilot-operated electromagnetic valve with valve opening and closing speed adjusting function

Technical Field

The utility model relates to the technical field of pilot-operated solenoid valves, in particular to a pilot-operated solenoid valve with a valve opening and closing speed adjusting function.

Background

Common solenoid valves are generally classified into direct-acting solenoid valves and pilot-operated solenoid valves. The direct-acting electromagnetic valve directly controls the opening and closing of the main valve through electromagnetic force of the electromagnetic valve, and is generally higher in use power, quicker in response time and most applicable to quick-cutting places. When the electromagnetic force is larger than the hydraulic force or the aerodynamic force, the electromagnetic valve can work normally, the direct-acting electromagnetic valve is large in size, and the applicable working medium pressure and circulation capacity are limited to a certain extent.

The pilot electromagnetic valve is characterized in that the pilot valve controls the opening and closing of the main valve through medium pressure, namely, after the electromagnetic valve is electrified, the pilot valve controls the pressure difference between the front part and the rear part of the main valve, so that the main valve is opened and closed. The pilot electromagnetic valve has strong adaptability to working medium pressure and circulation capacity, and can work in a self-adaptive manner along with the change of the working medium pressure, so that the applicable working medium pressure range is very wide, and the pilot electromagnetic valve has smaller volume compared with the direct-acting electromagnetic valve. The pilot electromagnetic valve is widely applied to various industries due to the characteristics of small volume, low power, strong adaptability and the like.

The current common pilot-operated solenoid valve generally requires that the opening and closing speeds of the valve are within 50-100 ms, but under special use environments, the response time of the pilot-operated solenoid valve is required to be within 3-5 s, and the pilot-operated solenoid valve has an adjustable function and has larger difference compared with the response time of the common pilot-operated solenoid valve. The solenoid valve requirement of the 'slow opening and slow closing' function cannot be met by the common pilot type solenoid valves in the industry.

Disclosure of Invention

The utility model aims to overcome the prior art, and provides a pilot-operated electromagnetic valve with a valve opening and closing speed adjusting function, which achieves the purpose of adjusting the opening and closing speed of a main valve of the electromagnetic valve by arranging a speed adjusting valve at an inlet and an outlet of a valve body so as to meet the requirements of the electromagnetic valve on response time of slow opening and slow closing, fast opening and slow closing and slow opening and fast closing, and can effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a guide formula solenoid valve with regulation valve opening, shut speed, includes valve body, pilot valve, governing valve I and governing valve II, governing valve I includes casing and governing valve, and the inner wall sliding connection of governing valve and casing is provided with spring II between governing valve and the casing, the lower extreme center of governing valve is provided with the governing valve orifice, and the governing valve orifice corresponds with the import II of casing lower extreme, is provided with export II on the casing, has seted up the intercommunication casing orifice with export II intercommunication on the cavity inner wall of casing, the structure of governing valve II is the same with the structure of governing valve I, and the pilot valve is through control gas circuit I, control gas circuit II and control gas circuit III respectively with the interface intercommunication on the valve body, and governing valve I concatenates on control gas circuit I, and governing valve II concatenates on control gas circuit III.

Further, the left end of the valve body is provided with an inlet I, the right end of the valve body is provided with an outlet I, a control cavity is arranged in the valve body, and a main gas circuit communicated with the inlet I and the outlet I is arranged below the control cavity.

Further, the control gas circuit I is communicated with the outlet I, the control gas circuit II is communicated with the control cavity, and the control gas circuit III is communicated with the outlet I.

Further, the intelligent control device further comprises a main valve, the right end of the main valve corresponds to the outlet I, the main valve is in sliding connection with the inner wall of the control cavity, and a spring I is arranged between the main valve and the left end of the control cavity.

Compared with the prior art, the utility model has the beneficial effects that:

when the medium flow through the throttle hole of the speed regulating valve is overlarge, the spring II plays a role in regulating the flow area of the throttle hole of the shell and controlling the flow of working medium under the action of hydraulic pressure or pneumatic force, and the purpose of regulating the opening and closing speeds of the main valve of the electromagnetic valve is achieved by arranging the speed regulating valve at the inlet and the outlet of the valve body so as to meet the requirements of the electromagnetic valve on response time of slow opening and slow closing, fast opening and slow closing and slow opening and fast closing.

Drawings

FIG. 1 is a schematic diagram of a solenoid valve closing configuration according to the present utility model;

FIG. 2 is a schematic diagram of the solenoid valve opening structure of the present utility model;

FIG. 3 is a schematic view of an initial state of the speed valve of the present utility model;

fig. 4 is a schematic diagram of the working state of the speed regulating valve of the utility model.

In the figure: the valve comprises a valve body 1, a spring I, a control cavity 3, a main valve 4, a main gas passage 5, a vent I6, a control gas passage III 7, a speed regulating valve II 8, a pilot valve 9, a speed regulating valve I10, a control gas passage II 11, a control gas passage I12, a vent I13, a spring II 14, a speed regulating valve 15, a housing 16, a housing 17, a vent II 18, a housing orifice 19 and a vent II 20.

Detailed Description

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. 1-4, the present utility model provides a technical solution: the utility model provides a guide formula solenoid valve with regulation valve opening, shut speed, including valve body 1, pilot valve 9, speed regulating valve I10 and speed regulating valve II 8, speed regulating valve I10 includes casing 16 and speed regulating valve 15, the inner wall sliding connection of speed regulating valve 15 and casing 16 is provided with spring II 14 between speed regulating valve 15 and the casing 16, the lower extreme center of speed regulating valve 15 is provided with speed regulating valve orifice 18, speed regulating valve orifice 18 corresponds with the import II 17 of casing 16 lower extreme, be provided with export II 20 on the casing 16, the intercommunication casing orifice 19 with export II 20 intercommunication has been seted up on the cavity inner wall of casing 16, when the medium flow through speed regulating valve orifice 18 is too big, spring II 14 plays the flow area of regulation casing orifice 19 under hydraulic pressure or pneumatic force, the effect of control working medium flow, the structure of speed regulating valve II 8 is the same with the structure of speed regulating valve I10, pilot valve 9 is through control gas circuit I12, control gas circuit II 11 and control gas circuit III 7 communicate with the interface on valve body 1 respectively, speed regulating valve I10 concatenates on control I12, speed regulating valve II 8 concatenates on control III 7.

The left end of valve body 1 is provided with import I13, the right-hand member of valve body 1 is provided with export I6, the inside of valve body 1 is provided with control chamber 3, the below of control chamber 3 is provided with the main gas circuit 5 of intercommunication import I13 and export I6, control gas circuit I12 and export I6 intercommunication, control gas circuit II 11 and control chamber 3 intercommunication, control gas circuit III 7 and export I6 intercommunication, the right-hand member of main valve 4 corresponds with export I6, the inner wall sliding connection of main valve 4 and control chamber 3 is provided with spring I2 between main valve 4 and the control chamber 3 left end.

Working principle: the speed regulating valve I10 and the speed regulating valve II 8 respectively installed on the control air passage I12 and the control air passage III 7 are shown in figure 1, and the working principle of the speed regulating valve is that when the medium flow passing through the throttle hole 18 of the speed regulating valve is overlarge, the spring II 14 plays a role in regulating the flow area of the throttle hole 19 of the shell under the action of hydraulic pressure or pneumatic force to control the flow of working medium, and the working medium is slowly filled into the control cavity 3 through the speed regulating valve I10, so that the pressure of the control cavity 3 is slowly increased, and the main valve 4 is slowly closed.

As shown in fig. 2, when the electromagnetic valve is electrified, the pilot valve enables the control gas path II 11 to be communicated with the control gas path III 7, the working medium in the control cavity 3 is slowly discharged to the outlet I6 through the speed regulating valve II 8, the pressure of the control cavity 3 is slowly reduced, the main valve 4 is slowly opened, and finally the function of slow opening and slow closing of the response time of the electromagnetic valve is achieved.

Similarly, the slow-opening and fast-closing function can be realized by only arranging the control gas path III 7 on the speed regulating valve II 8, and the fast-opening and slow-closing can be realized by only arranging the speed regulating valve I10 on the control gas path I12.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a guide formula solenoid valve with adjust valve opening, shut speed, includes valve body (1), pilot valve (9), speed governing valve I (10) and speed governing valve II (8), its characterized in that: the speed regulating valve I (10) comprises a shell (16) and a speed regulating valve (15), the speed regulating valve (15) is in sliding connection with the inner wall of the shell (16), a spring II (14) is arranged between the speed regulating valve (15) and the shell (16), a speed regulating valve orifice (18) is arranged at the center of the lower end of the speed regulating valve (15), the speed regulating valve orifice (18) corresponds to an inlet II (17) at the lower end of the shell (16), an outlet II (20) is arranged on the shell (16), a communicating shell orifice (19) communicated with the outlet II (20) is formed in the inner wall of a cavity of the shell (16), the speed regulating valve II (8) is identical to the speed regulating valve I (10) in structure, the pilot valve (9) is respectively communicated with an interface on the valve body (1) through a control gas path I (12), a control gas path II (11) and a control gas path III (7), the speed regulating valve I (10) is connected on the control gas path I (12) in series, and the speed regulating valve II (8) is connected on the control gas path III (7) in series.

2. A pilot operated solenoid valve having a flapper opening and closing speed as set forth in claim 1 wherein: the novel valve is characterized in that an inlet I (13) is formed in the left end of the valve body (1), an outlet I (6) is formed in the right end of the valve body (1), a control cavity (3) is formed in the valve body (1), and a main gas circuit (5) communicated with the inlet I (13) and the outlet I (6) is arranged below the control cavity (3).

3. A pilot operated solenoid valve having a flapper opening and closing speed as set forth in claim 2 wherein: the control gas circuit I (12) is communicated with the outlet I (6), the control gas circuit II (11) is communicated with the control cavity (3), and the control gas circuit III (7) is communicated with the outlet I (6).

4. A pilot operated solenoid valve having a flapper opening and closing speed as set forth in claim 1 wherein: the intelligent control device is characterized by further comprising a main valve (4), wherein the right end of the main valve (4) corresponds to the outlet I (6), the main valve (4) is in sliding connection with the inner wall of the control cavity (3), and a spring I (2) is arranged between the main valve (4) and the left end of the control cavity (3).