CN111442099A - Heavy-calibre guide's formula high pressure normally open solenoid valve - Google Patents

Heavy-calibre guide's formula high pressure normally open solenoid valve Download PDF

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Publication number
CN111442099A
CN111442099A CN202010245233.3A CN202010245233A CN111442099A CN 111442099 A CN111442099 A CN 111442099A CN 202010245233 A CN202010245233 A CN 202010245233A CN 111442099 A CN111442099 A CN 111442099A
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CN
China
Prior art keywords
piston
valve port
pilot
electromagnetic
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010245233.3A
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Chinese (zh)
Inventor
鲁焕炯
毛杉海
魏荣波
邵杰
郑年泽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yuyao Sanlixin Solenoid Valve Co ltd
Original Assignee
Yuyao Sanlixin Solenoid Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yuyao Sanlixin Solenoid Valve Co ltd filed Critical Yuyao Sanlixin Solenoid Valve Co ltd
Priority to CN202010245233.3A priority Critical patent/CN111442099A/en
Publication of CN111442099A publication Critical patent/CN111442099A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details

Abstract

The invention discloses a large-caliber pilot-operated high-pressure normally open electromagnetic valve, which relates to the technical field of electromagnetic valves and comprises the following components: the electromagnetic valve comprises a valve body, a piston assembly and an electromagnetic driving assembly, wherein the valve body is provided with an inlet cavity, an outlet cavity and a main valve port for communicating the inlet cavity with the outlet cavity, and the piston assembly is positioned above the main valve port and used for controlling the opening and closing of the main valve port; the piston assembly comprises a piston fixing sleeve, a piston body, a mandril assembly and a normally open spring, the piston body is movably sleeved in the piston fixing sleeve, and the piston fixing sleeve is fixedly connected with the valve body; the electromagnetic driving assembly is used for driving the ejector rod body to further compress the normally open spring; through the piston assembly and the pilot-operated structural design, the electromagnetic valve disclosed by the invention can meet the requirements of high flow and high pressure environments, and meanwhile, the requirement on the power of an electromagnetic coil can be reduced.

Description

Heavy-calibre guide's formula high pressure normally open solenoid valve
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to a large-caliber pilot-operated high-pressure normally open electromagnetic valve.
Background
The two-way solenoid valve generally has a normally closed type and a normally open type, and is called a normally closed type solenoid valve, in which the solenoid valve is in a closed state when the coil is de-energized and in an open state after the coil is energized. When the coil is powered off, the coil is in an open state, and after the coil is powered on, the coil is in a closed state, which is called a normally open type electromagnetic valve. This is based on energy saving and coil considerations, and it is known that the coil needs to consume electric energy when energized, and that long energization reduces the life of the coil, so that a normally closed type, which is a closed state of the solenoid valve, needs to be maintained for a long time, and a normally open type, which is an open state, needs to be maintained for a long time. In general, a normally open type solenoid valve is relatively complicated in structure.
In actual automation application, a normally closed type solenoid valve is common, and particularly, a normally closed type high-pressure solenoid valve is generally adopted, and a normally open type high-pressure solenoid valve is rare. However, the normally open type solenoid valve is widely used because the coil power of the general high-voltage solenoid valve is large, and long-time energization not only consumes a large amount of electric energy, but also has short service life of the coil. In the existing high-pressure solenoid valves, the most common solenoid valve is a direct-acting small-caliber solenoid valve, but the large-caliber high-pressure solenoid valve generally adopts a pilot-operated structure, has a large volume and a complex structure, and a normally-open high-pressure solenoid valve is more complex and has a high failure rate.
Disclosure of Invention
First, technical problem to be solved
The invention provides a large-caliber pilot-operated high-pressure normally open electromagnetic valve aiming at the defects in the prior art, solves the problems of complex structure, large volume and high failure rate of the conventional normally open electromagnetic valve, and also solves the problem that the conventional normally open electromagnetic valve cannot be well suitable for the requirements of large flow and high-pressure environment.
Second, technical scheme
In order to solve the above technical problem, the present invention provides a large-diameter pilot-operated high-pressure normally open solenoid valve, comprising: the electromagnetic valve comprises a valve body, a piston assembly and an electromagnetic driving assembly, wherein the valve body is provided with an inlet cavity, an outlet cavity and a main valve port for communicating the inlet cavity with the outlet cavity, and the piston assembly is positioned above the main valve port and used for controlling the opening and closing of the main valve port;
the piston assembly comprises a piston fixing sleeve, a piston body, a mandril assembly and a normally open spring, the piston body is movably sleeved in the piston fixing sleeve, and the piston fixing sleeve is fixedly connected with the valve body;
the piston body is provided with a piston inner cavity, a main valve port sealing piece, a pilot valve port communicated with the piston inner cavity and a balance hole, and the main valve port sealing piece is positioned at the bottom of the piston body and can be used for sealing the main valve port;
the ejector rod assembly comprises an ejector rod body and a pilot valve port sealing piece, the lower end of the ejector rod body is sleeved in the inner cavity of the piston, the upper end of the ejector rod body is sleeved with the electromagnetic driving assembly, and the electromagnetic driving assembly is used for driving the ejector rod body to further compress the normally open spring, so that the pilot valve port sealing piece positioned at the bottom of the ejector rod body seals the pilot valve port;
when the electromagnetic driving assembly is electrified, the pilot valve port sealing piece closes the pilot valve port, fluid enters the inner cavity of the piston from the inlet cavity through the balance hole, the pressure of the inner cavity of the piston is continuously increased, and the piston body is pushed to close the main valve port.
The electromagnetic driving assembly comprises a magnetism isolating pipe assembly, an electromagnetic coil and a movable iron core, the magnetism isolating pipe assembly is fixedly connected with the piston fixing sleeve, the magnetism isolating pipe assembly and the movable iron core are arranged in the electromagnetic coil, and the movable iron core can push the ejector rod body under the driving of the electromagnetic coil.
Wherein, the magnetism isolating pipe component is fixed with the electromagnetic coil through a nut.
Wherein, pilot valve mouth sealing member upper portion is equipped with buffer spring, and buffer spring one end and ejector pin body inner wall butt, and the buffer spring other end and pilot valve mouth sealing member butt.
And a spring balance sheet is arranged between the pilot valve port sealing element and the buffer spring, so that the elastic force of the buffer spring uniformly acts on the pilot valve port sealing element.
Wherein, the top of the ejector rod body is arc-shaped.
The bottom of the piston body is provided with a sealing element clamping groove for mounting a main valve port sealing element, and the main valve port sealing element is fixed in the sealing element clamping groove through a sealing element inner retainer ring and a sealing element outer retainer ring.
Wherein, be equipped with the piston ring on the piston body outer wall, piston ring and the fixed cover inner wall sliding fit of piston.
Wherein, the pilot valve mouth is located piston body axle center, and the balancing hole sets up on the piston body lateral wall.
Wherein, the inside embedded steel sheet that is equipped with of main valve mouth sealing member.
Third, beneficial effect
Compared with the prior art, the electromagnetic valve has the advantages that through the special structural design of the piston assembly and the pilot-operated structural design, the electromagnetic valve can meet the requirements of high flow and high pressure environments, and meanwhile, the requirement on the power of the electromagnetic coil can be reduced, so that the service life and the use reliability of the electromagnetic valve are effectively prolonged, the volume of the whole electromagnetic valve can be reduced, and the production cost is reduced;
in addition, the piston assembly and the ejector rod assembly are in an integrated modular design, so that the reliability of the electromagnetic valve is improved, and meanwhile, the electromagnetic valve is simple to process, reduces the cost and is convenient to maintain and replace;
furthermore, the embedded steel plate is arranged in the main valve port sealing element, so that the strength of the main valve port sealing element can be effectively improved, the main valve port sealing element can work for a longer time under a high-pressure working condition, and the service life is prolonged;
the main valve port sealing element is fixed in a flanging fixing mode of the inner retainer ring and the outer retainer ring, so that the connecting strength of the main valve port sealing element and the piston body can be effectively enhanced, the main valve port sealing element can be suitable for a high-pressure environment and cannot fall off, and the mechanical fixing mode is higher in reliability;
through the design of the buffer spring and the spring balance sheet, elastic connection is formed, so that instant impact on the pilot valve port sealing element is effectively reduced, the service life of the pilot valve port sealing element is prolonged, and meanwhile, the sealing effect of the pilot valve port sealing element on the pilot valve port is better;
still establish ejector pin body top into arc, arc top surface is direct to strike the contact with movable iron core, can reduce area of contact, strengthens the impact force for the solenoid valve can be faster close.
Drawings
FIG. 1 is a cross-sectional view of a large-caliber pilot-operated high-pressure normally open solenoid valve of the present invention;
FIG. 2 is a cross-sectional view of the valve body of the present invention;
FIG. 3 is a cross-sectional view of the piston assembly of the present invention;
FIG. 4 is a cross-sectional view of the ram assembly of the present invention;
FIG. 5 is a cross-sectional view of the piston body of the present invention;
FIG. 6 is a cross-sectional view of a main valve port seal of the present invention;
in the figure: 1 is a valve body; 2 is a piston fixing sleeve; 3 is a piston assembly; 4 is an electromagnetic driving component; 5 is a magnetism isolating pipe component; 6 is an inlet cavity; 7 is an outlet cavity; 8 is a main valve port; 9 is a piston body; 10 is a mandril component; a normally open spring is used as 11; 12 is a valve guide port; 13 is a balance hole; 14 is a piston inner cavity; 15 is a piston ring; 16 is a sealing element clamping groove; 17 is a main valve port sealing element; 18 is a sealing element inner retainer ring; 19 is a sealing element outer retainer ring; 20 is a mandril body; 21 is a pilot valve port seal; 22 is a buffer spring; 23 is a spring balance sheet; 24 is an electromagnetic coil; 25 is a movable iron core; 26 is a sealing ring; 27 is a steel plate; 28 is a stop block; and 29 is a wedge-shaped fixture block.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1:
as shown in fig. 1 to 6, in order to solve the above technical problems, a large-diameter pilot-operated high-pressure normally-open solenoid valve according to embodiment 1 of the present invention includes: the electromagnetic valve comprises a valve body 1, a piston assembly 3 and an electromagnetic driving assembly 4, wherein an inlet cavity 6, an outlet cavity 7 and a main valve port 8 for communicating the inlet cavity 6 with the outlet cavity 7 are arranged on the valve body 1, and the piston assembly 3 is positioned above the main valve port 8 and used for controlling the opening and closing of the main valve port 8;
the piston assembly 3 comprises a piston fixing sleeve 2, a piston body 9, a push rod assembly 10 and a normally open spring 11, the piston body 9 can be movably sleeved in the piston fixing sleeve 2, the piston fixing sleeve 2 is fixedly connected with the valve body 1, specifically, the piston assembly is fixedly installed in a mode of connecting and matching internal threads on the valve body 1 with external threads on the piston fixing sleeve 2, a sealing ring 26 is further arranged between the piston fixing sleeve 2 and the valve body 1 to ensure the overall sealing performance of the electromagnetic valve, a piston ring 15 is arranged on the outer wall of the piston body 9, the piston ring 15 is in sliding fit with the inner wall of the piston fixing sleeve 2 to ensure the smooth reciprocating motion of the piston in the piston fixing sleeve 2, and meanwhile, the;
as shown in fig. 3 and 5, a piston inner cavity 14, a main valve port sealing member 17, and a pilot valve port 12 and a balance hole 13 which are communicated with the piston inner cavity 14 are arranged on the piston body 9, the main valve port sealing member 17 is located at the bottom of the piston body 9 and can be used for sealing the main valve port 8, specifically, in the present embodiment, the pilot valve port 12 is located on the axial center of the piston body 9, the balance hole 13 is arranged on the side wall of the piston body 9, a sealing member clamping groove 16 for installing the main valve port sealing member 17 is arranged at the bottom of the piston body 9, the sealing member clamping groove 16 is an annular groove, the main valve port sealing member 17 is also an annular sealing ring, and the main valve port sealing member 17 is fixed in the sealing member clamping groove; the connection strength of the main valve port sealing element 17 and the piston body 9 can be effectively enhanced, the main valve port sealing element 17 can be suitable for a high-pressure environment and cannot fall off, and the mechanical fixing mode is high in reliability.
The ejector rod component 10 comprises an ejector rod body 20 and a pilot valve opening sealing piece 21, the lower end of the ejector rod body 20 is sleeved in the piston inner cavity 14, the upper end of the ejector rod body 20 is sleeved with an electromagnetic driving component 4, the electromagnetic driving component 4 is used for driving the ejector rod body 20 to further compress a normally open spring 11, so that the pilot valve opening sealing piece 21 positioned at the bottom of the ejector rod body 20 seals a pilot valve opening 12, the pilot valve opening 12 is clamped in a stepped cavity at the bottom of the ejector rod body 20 through a wedge-shaped clamping block 29, in the embodiment, the electromagnetic driving component 4 comprises a magnetism isolating pipe component 5, an electromagnetic coil 24 and a movable iron core 25, the magnetism isolating pipe component 5 is connected and fixed with the piston fixing sleeve 2, the magnetism isolating pipe component 5 adopts a modularized integrated structure, and the purpose of reducing the accumulated tolerance of superposition of each part of the magnetism isolating pipe component 5; specifically, the plunger rod is fixedly installed in a manner that an internal thread on the piston fixing sleeve 2 is connected and matched with an external thread on the magnetism isolating pipe assembly 5, a sealing ring 26 is arranged between the piston fixing sleeve 2 and the magnetism isolating pipe assembly 5, the magnetism isolating pipe assembly 5 and the movable iron core 25 are arranged in the electromagnetic coil 24, the magnetism isolating pipe assembly 5 is fixed with the electromagnetic coil 24 through a nut, after the electromagnetic coil 24 is electrified, the movable iron core 25 moves under the action of electromagnetic force, namely the movable iron core 25 can be abutted against the upper end of the ejector rod body 20 under the driving of the electromagnetic coil 24 and pushes the ejector rod body 20, the top of the ejector rod body 20 is arc-shaped, the arc-shaped top surface is in direct impact contact with the movable iron core 25, the contact area can be reduced, the impact force is enhanced, the electromagnetic valve; when the electromagnetic driving assembly 4 is electrified, the pilot valve port sealing piece 21 closes the pilot valve port 12, and fluid enters the piston inner cavity 14 from the inlet cavity 6 through the balance hole 13, so that the pressure of the piston inner cavity 14 is continuously increased, and the piston body 9 is pushed to close the main valve port 8;
specifically, when the electromagnetic coil 24 is energized, the electromagnetic force presses the movable iron core 25 downward to drive the ejector rod assembly 10 to press downward, the ejector rod assembly 10 overcomes the elastic force of the normally open spring 11 to further compress the normally open spring, so that the pilot valve port 12 is closed by the pilot valve port sealing member 21, the pressure of the piston inner cavity 14 cannot be relieved, at this time, under the action of pressure difference, the piston assembly 3 moves downward, the main valve port sealing member 17 is abutted against and sealed with the main valve port 8, thereby closing the main valve port 8, the fluid is blocked and cannot flow, and at this time, the electromagnetic valve is in a closed state after being energized
As shown in fig. 3, the normally open spring 11 is arranged in the piston inner cavity 14, the upper part of the piston inner cavity 14 is provided with a check ring, the lower part of the normally open spring 11 is abutted against the bottom of the piston inner cavity 14, the upper part of the normally open spring 11 is abutted against the stop 28 extending from the side wall of the ejector rod body 20, when the electromagnetic coil 24 is not electrified, the stop 28 extending from the side wall of the ejector rod body 20 is pressed upwards on the check ring through the normally open spring 11 in a compressed state, at this time, the pilot valve port sealing member 21 at the bottom of the ejector rod body 20 is spaced from the pilot valve port 12 to be free from contact;
specifically, when the solenoid 24 is not energized, fluid enters from the inlet chamber 6 and enters the piston interior chamber 14 through the balance hole 13, the pilot valve port seal 21 is separated from the pilot valve port 12 under the action of the normally open spring 11, the pressure of the piston interior chamber 14 is relieved through the pilot valve port 12, the piston assembly 3 is displaced upward under the action of a pressure differential, the main valve port seal 17 is separated from the main valve port 8, and fluid flows from the inlet chamber 6 to the outlet chamber 7 through the main valve port 8, and the solenoid valve is in an unenergized normally open state.
The flow path of the electromagnetic valve of the embodiment can be phi 8-50mm through the design, so that the design requirement of large flow is met, and the application range is wider.
Example 2:
compared with the embodiment 1, in the embodiment, the buffer spring 22 is arranged on the upper part of the pilot valve port sealing piece 21, one end of the buffer spring 22 is abutted against the inner wall of the mandril body 20, and the other end of the buffer spring 22 is abutted against the pilot valve port sealing piece 21; a spring balance sheet 23 is arranged between the guide valve port sealing element 21 and the buffer spring 22, so that the elastic force of the buffer spring 22 uniformly acts on the guide valve port sealing element 21;
specifically, as shown in fig. 4, the bottom of the stem body 20 is provided with a cavity for accommodating the buffer spring 22 and the pilot valve port sealing member 21, and the pilot valve port sealing member 21 forms an elastic connection with the stem body 20 through the buffer spring 22, so that the instant impact on the pilot valve port sealing member 21 is effectively reduced, the service life of the pilot valve port sealing member 21 is prolonged, and the sealing effect of the pilot valve port 12 can be better.
The spring balance sheet 23 on the pilot valve port sealing member 21 can enable the elastic force of the buffer spring 22 to act on the pilot valve port sealing member 21 more uniformly, and is beneficial to improving the sealing effect of the pilot valve port sealing member 21 on the pilot valve port 12.
Example 3:
compared with the embodiment 1, in the embodiment, the main valve port sealing element 17 is internally provided with the embedded steel plate 27, and the strength of the main valve port sealing element 17 can be effectively improved through the steel plate 27, so that the main valve port sealing element 17 can work for a longer time under a high-pressure working condition, and the service life is prolonged.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (10)

1. A large-caliber pilot-operated high-pressure normally-open electromagnetic valve is characterized by comprising: the electromagnetic valve comprises a valve body (1), a piston assembly (3) and an electromagnetic driving assembly (4), wherein an inlet cavity (6), an outlet cavity (7) and a main valve port (8) for communicating the inlet cavity (6) with the outlet cavity (7) are arranged on the valve body (1), and the piston assembly (3) is located above the main valve port (8) and used for controlling the opening and closing of the main valve port (8);
the piston assembly (3) comprises a piston fixing sleeve (2), a piston body (9), a push rod assembly (10) and a normally open spring (11), the piston body (9) is movably sleeved in the piston fixing sleeve (2), and the piston fixing sleeve (2) is fixedly arranged on the valve body (1);
the piston body (9) is provided with a piston inner cavity (14), a main valve port sealing piece (17), a valve guide port (12) and a balance hole (13) which are respectively communicated with the piston inner cavity (14), and the main valve port sealing piece (17) is arranged at the bottom of the piston body (9) and can be used for sealing a main valve port (8);
the ejector rod assembly (10) comprises an ejector rod body (20) and a pilot valve port sealing piece (21), the lower end of the ejector rod body (20) is sleeved in the piston inner cavity (14), the upper end of the ejector rod body (20) is sleeved with the electromagnetic driving assembly (4), and the electromagnetic driving assembly (4) is used for driving the ejector rod body (20) to further compress the normally open spring (11), so that the pilot valve port sealing piece (21) positioned at the bottom of the ejector rod body (20) seals the pilot valve port (12);
when the electromagnetic driving assembly (4) is electrified, the pilot valve port sealing piece (21) closes the pilot valve port (12), fluid enters the piston inner cavity (14) from the inlet cavity (6) through the balance hole (13), so that the pressure of the piston inner cavity (14) is continuously increased, and the piston body (9) is pushed to close the main valve port (8).
2. The large-caliber pilot-operated high-pressure normally open electromagnetic valve according to claim 1, wherein the electromagnetic driving assembly (4) comprises a magnetism isolating pipe assembly (5), an electromagnetic coil (24) and a movable iron core (25), the magnetism isolating pipe assembly (5) is fixedly connected with the piston fixing sleeve (2), the magnetism isolating pipe assembly (5) and the movable iron core (25) are arranged in the electromagnetic coil (24), and the movable iron core (25) can push the ejector rod body (20) under the driving of the electromagnetic coil (24).
3. The large-caliber pilot-operated high-pressure normally-open electromagnetic valve according to claim 2, wherein the magnetism isolating pipe assembly (5) is fixed with the electromagnetic coil (24) through a nut.
4. The large-caliber pilot-operated high-pressure normally open electromagnetic valve according to claim 1, wherein a buffer spring (22) is arranged at the upper part of the pilot valve port sealing piece (21), one end of the buffer spring (22) is abutted against the inner wall of the ejector rod body (20), and the other end of the buffer spring (22) is abutted against the pilot valve port sealing piece (21).
5. The large-caliber pilot-operated high-pressure normally-open electromagnetic valve according to claim 4, wherein a spring balance sheet (23) is further arranged between the pilot valve port sealing member (21) and the buffer spring (22), so that the elastic force of the buffer spring (22) uniformly acts on the pilot valve port sealing member (21).
6. The large-caliber pilot-operated high-pressure normally-open electromagnetic valve as claimed in claim 1, wherein the top of the ejector rod body (20) is arc-shaped.
7. The large-caliber pilot-operated high-pressure normally-open electromagnetic valve according to claim 1, wherein the bottom of the piston body (9) is provided with a sealing element clamping groove (16) for installing the main valve opening sealing element (17), and the main valve opening sealing element (17) is fixed in the sealing element clamping groove (16) through a sealing element inner retainer ring (18) and a sealing element outer retainer ring (19).
8. The large-caliber pilot-operated high-pressure normally-open electromagnetic valve as claimed in claim 1, wherein a piston ring (15) is arranged on the outer wall of the piston body (9), and the piston ring (15) is in sliding fit with the inner wall of the piston fixing sleeve (2).
9. The large-caliber pilot-operated high-pressure normally-open electromagnetic valve as claimed in claim 1, wherein the pilot valve port (12) is positioned on the axis of the piston body (9), and the balance hole (13) is arranged on the side wall of the piston body (9).
10. A large-caliber pilot-operated high-pressure normally-open electromagnetic valve according to claim 1, wherein the main valve port sealing member (17) is internally provided with an embedded steel plate (27).
CN202010245233.3A 2020-03-31 2020-03-31 Heavy-calibre guide's formula high pressure normally open solenoid valve Pending CN111442099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010245233.3A CN111442099A (en) 2020-03-31 2020-03-31 Heavy-calibre guide's formula high pressure normally open solenoid valve

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Application Number Priority Date Filing Date Title
CN202010245233.3A CN111442099A (en) 2020-03-31 2020-03-31 Heavy-calibre guide's formula high pressure normally open solenoid valve

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112943939A (en) * 2021-01-29 2021-06-11 西安航天远征流体控制股份有限公司 Pilot valve
CN113048243A (en) * 2021-02-22 2021-06-29 西安航天远征流体控制股份有限公司 Valve body and step-by-step direct-acting electromagnetic valve
CN113048269A (en) * 2021-02-22 2021-06-29 西安航天远征流体控制股份有限公司 Combined valve
CN116292913A (en) * 2023-03-03 2023-06-23 江苏申氢宸科技有限公司 High-flow low-pressure-loss electromagnetic valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112943939A (en) * 2021-01-29 2021-06-11 西安航天远征流体控制股份有限公司 Pilot valve
CN113048243A (en) * 2021-02-22 2021-06-29 西安航天远征流体控制股份有限公司 Valve body and step-by-step direct-acting electromagnetic valve
CN113048269A (en) * 2021-02-22 2021-06-29 西安航天远征流体控制股份有限公司 Combined valve
CN113048269B (en) * 2021-02-22 2023-09-12 西安航天远征流体控制股份有限公司 Combined valve
CN116292913A (en) * 2023-03-03 2023-06-23 江苏申氢宸科技有限公司 High-flow low-pressure-loss electromagnetic valve

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