CN111442129A - Novel corrosion-resistant solenoid valve - Google Patents

Novel corrosion-resistant solenoid valve Download PDF

Info

Publication number
CN111442129A
CN111442129A CN202010245271.9A CN202010245271A CN111442129A CN 111442129 A CN111442129 A CN 111442129A CN 202010245271 A CN202010245271 A CN 202010245271A CN 111442129 A CN111442129 A CN 111442129A
Authority
CN
China
Prior art keywords
diaphragm
valve body
valve
small
port
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
CN202010245271.9A
Other languages
Chinese (zh)
Inventor
毛杉海
鲁焕炯
顾国云
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 CN202010245271.9A priority Critical patent/CN111442129A/en
Publication of CN111442129A publication Critical patent/CN111442129A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16K31/0603—Multiple-way valves
    • F16K31/0641—Multiple-way valves the valve member being a diaphragm
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • 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
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention discloses a corrosion-resistant novel electromagnetic valve, which relates to the technical field of electromagnetic valves and comprises the following components: the valve comprises a valve body, a coil driving assembly arranged on the valve body and a sealing diaphragm arranged in the valve body, wherein the valve body is provided with a valve body inlet, a valve body outlet, a main valve port, a pilot port and a pressure relief hole; the valve body inlet is communicated with the valve body outlet through the main valve port; the large diaphragm can be pressed and sealed with the main valve port under the elastic action of the diaphragm spring; the coil driving assembly can control the movable iron core to reciprocate so as to drive the small diaphragm to move; according to the invention, through the special structural design of the large diaphragm and the small diaphragm, the large diaphragm and the small diaphragm can bear various corrosive media, and meanwhile, the design greatly reduces the production cost; and by changing the medium flow direction of the conventional solenoid valve, the working pressure application range of the solenoid valve is greatly improved, and the requirement on a coil driving assembly of the solenoid valve is lower.

Description

Novel corrosion-resistant solenoid valve
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to a novel corrosion-resistant electromagnetic valve.
Background
The electromagnetic valve is an actuating element in an automatic control system and plays a role in remotely controlling the on-off of the fluid and changing the direction of the fluid. Compared with the middle gauge and the middle gauge, the anti-corrosion electromagnetic valve in the prior art is mainly designed in a direct-acting type or a direct-acting diaphragm type, and the electromagnetic valve with the structure has low opening pressure and poor sealing performance. In order to deal with the situation that strong acid, strong alkali and other media are directly made into a sealing element by PTFE (polytetrafluoroethylene) for use, the PTFE has high hardness, so that the phenomenon of untight sealing is often caused in the actual use process; in order to resist various liquids or gases with strong corrosivity, the anti-corrosion electromagnetic valve in the prior art adopts the perfluoroether FFKM rubber as a sealing element, so that the use effect is improved, but the production cost is extremely high; in addition, the proportion of the inlet and the outlet adjusting holes of the anticorrosion electromagnetic valve in the prior art is not coordinated, so that the pressure is very low when the electromagnetic valve is used, and the electromagnetic valve cannot be used under most working conditions.
The power of the coil of the anti-corrosion electromagnetic valve in the prior art is very high, and in order to enable the sealing element made of PTFE to be dead and seal the valve guide port, the spring force is increased very much. In order to overcome the strong spring force, all enterprises increase the power of the electromagnetic coil, so that the magnetic field generated after the coil is electrified is enlarged, and a lot of resources are wasted while the cost of the electromagnetic valve is improved.
The corrosion-resistant electromagnetic valve disclosed in the Chinese utility model patent CN208935522U comprises a shell, wherein a valve body is fixedly installed at the bottom of the shell, coils are fixed on two sides of the inner wall of the shell, an iron block is fixed at the top of the inner wall of the shell and positioned inside the coils, an iron core is arranged between two sides of the inner wall of the shell and positioned at the bottom of the iron block in a sliding manner, a spring is fixed between the top of the iron core and the bottom of the iron block, a fixed block is fixed at the bottom of the iron core through two connecting blocks, a motor is fixed at the bottom of the iron core and positioned between the two connecting blocks, a valve core is rotated on the inner wall of the fixed block, and the surface of the valve core slides along the inner; the utility model discloses a problem and the higher problem of solenoid valve power are sealed in solution that the solenoid valve can not be fine.
Disclosure of Invention
First, technical problem to be solved
The invention provides a novel corrosion-resistant electromagnetic valve aiming at the defects in the prior art, and solves the problems that the conventional corrosion-resistant electromagnetic valve has higher production cost in order to resist various liquids or gases with strong corrosion resistance, and the conventional corrosion-resistant electromagnetic valve needs higher coil power of the electromagnetic valve and cannot be suitable for a high-pressure environment.
Second, technical scheme
In order to solve the above technical problems, the present invention provides a novel corrosion-resistant electromagnetic valve, including: the valve comprises a valve body, a coil driving assembly arranged on the valve body and a sealing diaphragm arranged in the valve body, wherein the valve body is provided with a valve body inlet, a valve body outlet, a main valve port, a pilot port and a pressure relief hole;
the valve body inlet is communicated with the valve body outlet through the main valve port;
the large diaphragm can be pressed and sealed with the main valve port under the elastic action of the diaphragm spring;
a large diaphragm upper cavity is formed between the large diaphragm and the inner wall of the valve body, and the large diaphragm upper cavity is communicated with the valve body outlet through a pilot port and a pressure relief hole;
the small diaphragm is used for controlling the opening and closing of the pilot port;
a movable iron core is arranged in the coil driving assembly, the extending end of the movable iron core is fixed with the small diaphragm, and the coil driving assembly can control the movable iron core to reciprocate so as to drive the small diaphragm to move.
When the electromagnetic device is electrified, the movable iron core overcomes the elasticity of the iron core spring and drives the small diaphragm to move upwards, so that the pilot port is opened.
The valve body comprises a main valve body and an upper valve cover, the large diaphragm is fixed between the main valve body and the upper valve cover, the valve body inlet, the valve body outlet and the main valve port are arranged on the main valve body, and the pilot port is arranged on the upper valve cover.
Wherein, the edge of the large diaphragm is provided with a sealing bulge, and the main valve body and the upper valve cover are provided with corresponding grooves.
Wherein, the large membrane and the small membrane adopt VITON rubber with PTFE coated on the surface.
The large diaphragm is provided with a diaphragm small hole, when the coil driving assembly is not electrified, the small diaphragm closes and seals the pilot port, fluid enters the upper cavity of the large diaphragm from the inlet of the valve body through the diaphragm small hole to enable the pressures on two sides of the large diaphragm to be equal, and the large diaphragm closes and seals the main valve port under the elastic action of the diaphragm spring.
Wherein, the small diaphragm is provided with a breather hole which is used for keeping the cavity of the small diaphragm to be connected with the atmosphere.
Wherein, the upper portion of the small diaphragm is provided with a clamping groove, and the movable iron core is provided with a clamping block correspondingly clamped with the clamping groove.
When the pilot port is in a closed state, the pilot port and the center of the small diaphragm are pressed and sealed, the outer ring of the small diaphragm and a small diaphragm lower cavity formed by the wall of the valve body are communicated through a pressure relief hole.
The lower part of the coil driving assembly and the upper part of the small diaphragm form a small diaphragm upper cavity, and the small diaphragm is tightly pressed and fixed through the coil driving assembly.
Third, beneficial effect
Compared with the prior art, the large diaphragm and the small diaphragm can bear various corrosive media through the special structural design of the large diaphragm and the small diaphragm, and meanwhile, the design greatly reduces the production cost, does not influence the sealing effect of the large diaphragm and the small diaphragm, and has longer service life;
and by changing the medium flow direction of the conventional solenoid valve, the working pressure application range of the solenoid valve is greatly improved, and the requirement on a coil driving assembly of the solenoid valve is lower.
Drawings
FIG. 1 is a cross-sectional view of a novel corrosion resistant solenoid valve of the present invention;
FIG. 2 is a cross-sectional view of the movable core and the small diaphragm of the present invention;
FIG. 3 is a cross-sectional view of a large diaphragm of the present invention;
FIG. 4 is a schematic media flow diagram of the de-energized state of the present invention;
FIG. 5 is a schematic media flow diagram illustrating the energized state of the present invention;
FIG. 6 is a schematic diagram of the pressure inlet and outlet of a conventionally designed solenoid valve;
FIG. 7 is a schematic diagram of the pressure inlet and the pressure relief of the solenoid valve according to the present invention;
FIG. 8 is a schematic view of the pressure action area of the small diaphragm of the present invention 1;
FIG. 9 is a schematic view of the pressure action area of the small diaphragm of the present invention 2;
in the figure: 1 is a valve body; 2 is a coil driving component; 3 is a large membrane; 4 is a diaphragm spring; 5 is a small membrane; 6 is a main valve body; 7 is an upper valve cover; 8 is a valve body inlet; 9 is the valve body outlet; 10 is a main valve port; 11 is a pilot port; 12 is a pressure relief hole; 13 is a magnetism isolating pipe component; 14 is an electromagnetic device; 15 is a movable iron core; 16 is an iron core spring; 17 is a large diaphragm upper cavity; 18 is a large diaphragm lower cavity; 19 is a sealing projection; 20 is a small hole of the diaphragm; 21 is a small diaphragm upper cavity; 22 is a card slot; 23 is a fixture block; and 24 is a small diaphragm lower cavity.
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 9, a novel corrosion-resistant electromagnetic valve according to an embodiment of the present invention includes: the valve comprises a valve body 1, a coil driving assembly 2 arranged on the valve body 1 and a sealing diaphragm arranged in the valve body 1, wherein the valve body 1 is provided with a valve body inlet 8, a valve body outlet 9, a main valve port 10, a pilot port 11 and a pressure relief hole 12, and the sealing diaphragm comprises a large diaphragm 3 and a small diaphragm 5; in this embodiment, the valve body 1 includes a main valve body 6 and an upper valve cover 7, the main valve body 6 and the upper valve cover 7 are connected and fixed by bolts, specifically, a valve body inlet 8, a valve body outlet 9 and a main valve port 10 are arranged on the main valve body 6, the valve body inlet 8 and the valve body outlet 9 are located at two ends of the main valve body 6, the main valve port 10 is located at the upper portion of the main valve body 6, the valve body inlet 8 and the valve body outlet 9 are communicated by the main valve port 10, the large diaphragm 3 is fixed between the main valve body 6 and the upper valve cover 7, the pilot port 11 is arranged on the upper valve cover 7, the main valve body 6 and the upper valve cover 7 are made of different materials according to media, and can be divided into stainless steel 316 materials.
Moreover, when the main valve port 10 is in a closed state, namely the middle part of the large diaphragm 3 is pressed against the main valve port 10 by the elastic force of the diaphragm spring 4 and the main valve port 10 is in a sealed state, a large diaphragm lower cavity 18 is formed between the outer ring position of the large diaphragm 3 and the valve body inlet 8, the matching part of the middle part of the large diaphragm 3 and the main valve port 10 is thicker, which is beneficial to improving the sealing effect when the main valve port 10 is closed, the outer ring position of the large diaphragm 3 is relatively thinner, namely the large diaphragm lower cavity 18 and the large diaphragm upper cavity 17 are communicated through a diaphragm small hole 20 formed on the large diaphragm 3, namely, when the coil driving component 2 is not electrified, fluid enters the large diaphragm lower cavity 18 from the valve body inlet 8, then enters the large diaphragm upper cavity 17 through the diaphragm small hole 20 and the pressures on both sides of the large diaphragm 3 are equal, and under the elastic force of the diaphragm spring 4, the main valve, the small diaphragm 5 closes and seals the pilot port 11, and the entire solenoid valve is closed.
Because diaphragm spring 4 also can be with medium direct contact, diaphragm spring 4 adopts stainless steel to at the surface parcel one deck thinner PTFE coating of diaphragm spring 4.
As shown in fig. 4 and 5, a large diaphragm upper chamber 17 is formed between the large diaphragm 3 and the inner wall of the valve body 1, the large diaphragm upper chamber 17 is separated from a large diaphragm lower chamber 18 by the large diaphragm 3, and the large diaphragm upper chamber 17 is communicated with the valve body outlet 9 through a pilot port 11 and a pressure relief hole 12, namely a pilot device of the solenoid valve;
as shown in fig. 1 and 2, a movable iron core 15 is disposed in the coil driving assembly 2, an extending end of the movable iron core 15 is fixed to the small diaphragm 5, and the coil driving assembly 2 can control the movable iron core 15 to reciprocate so as to drive the small diaphragm 5 to move, specifically, in this embodiment, the coil driving assembly 2 further includes a magnetism isolating pipe assembly 13, an electromagnetic device 14 and an iron core spring 16, the magnetism isolating pipe assembly 13 and the movable iron core 15 are sequentially sleeved in the electromagnetic device 14, the magnetism isolating pipe assembly 13 is fixed to the coil driving assembly 2 through a nut, and the iron core spring 16 is disposed between the magnetism isolating pipe assembly 13 and the movable iron core 15;
when the electromagnetic device 14 is not electrified, under the elastic force action of the iron core spring 16, the pilot port 11 and the center position of the small diaphragm 5 are pressed and sealed, the matching part of the middle part of the small diaphragm 5 and the pilot port 11 is thicker, which is beneficial to improving the sealing effect when the pilot port 11 is closed, the outer ring position of the small diaphragm 5 is relatively thinner, a small diaphragm lower cavity 24 is formed between the outer ring position of the small diaphragm 5 and the wall of the upper valve cover 7, the small diaphragm lower cavity 24 is communicated with the valve body outlet 9 through the pressure relief hole 12, and the pilot port 11 is used for communicating the large diaphragm upper cavity 17 and the small diaphragm lower cavity 24;
when the electromagnetic device 14 is powered on, the movable iron core 15 overcomes the elastic force of the iron core spring 16 and drives the small diaphragm 5 to move upwards, so that the pilot port 11 is opened; at the moment, the pressure in the large diaphragm upper cavity 17 instantly enters the small diaphragm lower cavity 24 through the pilot port 11, then is decompressed through the decompression hole 12 and enters the valve body outlet 9, at the moment, the pressure in the large diaphragm lower cavity 18 is larger than the pressure in the large diaphragm upper cavity 17, the large diaphragm 3 moves upwards and is separated from the main valve port 10 under the action of pressure difference, and the whole electromagnetic valve is in an open state.
This embodiment adopts the effectual required coil power that has reduced the solenoid valve of above-mentioned structure, has improved the operating pressure that can be suitable for of solenoid valve simultaneously greatly.
In the embodiment, the large membrane 3 and the small membrane 5 are made of VITON rubber, and the surface of the VITON rubber is coated with a thin PTFE coating; specifically, the large diaphragm 3 and the small diaphragm 5 are often in contact with media in practical application, so the PTFE coating is used for resisting various corrosive media, the combined diaphragm structure is economical and cost-saving, the VITON rubber inside has certain elasticity, the VITON rubber is relatively free in reciprocating motion, and from the sealing angle, although the PTFE coating is hard, the PTFE coating is only a thin layer, and the VITON rubber inside can completely carry out effective sealing through self deformation, so the working life is long, and the VITON rubber can withstand the impact of various corrosive media.
Fig. 6 is a schematic diagram of pressure inlet and pressure release of a conventionally designed solenoid valve, in which a pressure release hole 12 is used as a pressure inlet, and a pilot port 11 is used as a pressure release port, because the pressure acting area of the pressure inlet on a diaphragm is large, and the pressure acting area of the pressure release port is small, the small diaphragm 5 can be jacked up under the action of small medium pressure, that is, a larger iron core spring 16 and higher coil power are required to realize sealing;
in the present embodiment, as shown in fig. 7, in which the pilot port 11 is used as a pressure inlet and the pressure relief hole 12 is used as a pressure relief port, the pressure acting area of the pressure inlet is greatly reduced by adopting the design, the upward pushing force is very small, the sealing is easily realized, and the requirements on the elasticity of the core spring 16 and the coil power are reduced.
Further, as shown in fig. 8 and 9, when the elastic force of the core spring 16 is F, the pressure of the medium is P, the shapes corresponding to the three regions A, B, C are all circular, and the pressure calculation formula corresponding to the three regions A, B, C is pi r2× P, namely, the area A is the pressure action area of pressure inlet department in this embodiment, the area C subtracts the area B and is the pressure action area of pressure outlet department in this embodiment, according to the actual product test, the pressure of pressure inlet is 1: 90 with the pressure of pressure outlet, namely, the pressure of pressure inlet is far less than the pressure of pressure outlet, namely, the solenoid valve of this embodiment requires lower to elasticity F, the sealing performance to guide port 11 is better, and make the solenoid valve of this embodiment can be applicable to higher pressure environment, the medium pressure P that can bear is higher, and application range is wider.
Example 2:
compared with embodiment 1, in this embodiment, a sealing protrusion 19 is disposed on the edge of the large diaphragm 3, corresponding grooves are disposed on the main valve body 6 and the upper valve cover 7, and the main valve body 6 and the upper valve cover 7 are effectively sealed by corresponding matching, and the mounting is facilitated; as shown in fig. 2, a clamping groove 22 is formed in the upper portion of the small diaphragm 5, and the movable iron core 15 is provided with a clamping block 23 correspondingly clamped with the clamping groove 22, so that the small diaphragm 5 and the movable iron core 15 are effectively fixed.
Example 3:
compared with embodiment 1, in this embodiment, the lower portion of the coil driving assembly 2 and the upper portion of the small diaphragm 5 form a small diaphragm upper cavity 21, and the small diaphragm 5 is pressed and fixed by the coil driving assembly 2. The small diaphragm 5 is provided with a vent hole which is used for keeping the small diaphragm upper cavity 21 connected with the atmosphere, and the small diaphragm upper cavity 21 is always in an isolated state and does not contact with a medium.
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 novel corrosion-resistant solenoid valve, its characterized in that, novel corrosion-resistant solenoid valve includes: the valve comprises a valve body (1), a coil driving assembly (2) arranged on the valve body (1) and a sealing diaphragm arranged in the valve body (1), wherein a valve body inlet (8), a valve body outlet (9), a main valve port (10), a pilot port (11) and a pressure relief hole (12) are formed in the valve body (1), and the sealing diaphragm comprises a large diaphragm (3) and a small diaphragm (5);
the valve body inlet (8) is communicated with the valve body outlet (9) through a main valve port (10);
the large diaphragm (3) can be pressed and sealed with the main valve port (10) under the elastic action of a diaphragm spring (4);
a large diaphragm upper cavity (17) is formed between the large diaphragm (3) and the inner wall of the valve body (1), the large diaphragm upper cavity (17) is communicated with the valve body outlet (9) through a pilot port (11) and a pressure relief hole (12);
the small diaphragm (5) is used for controlling the opening and closing of the pilot port (11);
be equipped with movable iron core (15) in coil drive assembly (2), movable iron core (15) stretch out the end with little diaphragm (5) are fixed, thereby coil drive assembly (2) are steerable movable iron core (15) reciprocating motion drives little diaphragm (5) motion.
2. The novel corrosion-resistant electromagnetic valve according to claim 1, wherein the coil driving assembly (2) further comprises a magnetism isolating pipe assembly (13), an electromagnetic device (14) and a core spring (16), the magnetism isolating pipe assembly (13) and the movable core (15) are sleeved in the electromagnetic device (14), the core spring (16) is arranged between the magnetism isolating pipe assembly (13) and the movable core (15), and when the electromagnetic device (14) is energized, the movable core (15) overcomes the elastic force of the core spring (16) and drives the small diaphragm (5) to move upwards, so that the pilot port (11) is opened.
3. A new type of corrosion resistant electromagnetic valve according to claim 1, characterized in that the valve body (1) comprises a main valve body (6) and an upper valve cover (7), the large diaphragm (3) is fixed between the main valve body (6) and the upper valve cover (7), the valve body inlet (8), the valve body outlet (9) and the main valve port (10) are arranged on the main valve body (6), and the pilot port (11) is arranged on the upper valve cover (7).
4. A novel corrosion-resistant electromagnetic valve according to claim 3, wherein the edge of the large diaphragm (3) is provided with a sealing protrusion (19), and the main valve body (6) and the upper valve cover (7) are provided with corresponding grooves.
5. The new type of corrosion-resistant electromagnetic valve as claimed in claim 1, wherein said large diaphragm (3) and small diaphragm (5) are VITON rubber with PTFE coated on the surface.
6. The novel corrosion-resistant electromagnetic valve according to claim 1, wherein the large diaphragm (3) is provided with a diaphragm small hole (20), when the coil driving assembly (2) is not energized, the small diaphragm (5) closes and seals the pilot port (11), fluid enters the large diaphragm upper chamber (17) from the valve body inlet (8) through the diaphragm small hole (20) to equalize pressure on two sides of the large diaphragm (3), and the large diaphragm (3) closes and seals the main valve port (10) under the action of the elastic force of the diaphragm spring (4).
7. The novel corrosion-resistant electromagnetic valve according to claim 1, wherein a clamping groove (22) is formed in the upper portion of the small diaphragm (5), and the movable iron core (15) is provided with a clamping block (23) correspondingly clamped with the clamping groove (22).
8. A novel corrosion-resistant electromagnetic valve according to claim 1, wherein when the pilot port (11) is in a closed state, the pilot port (11) is pressed and sealed with the center of the small diaphragm (5), the outer ring position of the small diaphragm (5) forms a small diaphragm lower cavity (24) with the wall of the valve body (1), and the small diaphragm lower cavity (24) is communicated with the valve body outlet (9) through the pressure relief hole (12).
9. The novel corrosion-resistant electromagnetic valve according to claim 1, wherein the lower part of the coil driving assembly (2) and the upper part of the small diaphragm (5) form a small diaphragm upper cavity (21), and the small diaphragm (5) is tightly pressed and fixed through the coil driving assembly (2).
10. The new corrosion-resistant electromagnetic valve according to claim 9, characterized in that said small diaphragm (5) is provided with air holes for keeping the small diaphragm upper cavity (21) connected to atmosphere.
CN202010245271.9A 2020-03-31 2020-03-31 Novel corrosion-resistant solenoid valve Pending CN111442129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010245271.9A CN111442129A (en) 2020-03-31 2020-03-31 Novel corrosion-resistant solenoid valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010245271.9A CN111442129A (en) 2020-03-31 2020-03-31 Novel corrosion-resistant solenoid valve

Publications (1)

Publication Number Publication Date
CN111442129A true CN111442129A (en) 2020-07-24

Family

ID=71650873

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010245271.9A Pending CN111442129A (en) 2020-03-31 2020-03-31 Novel corrosion-resistant solenoid valve

Country Status (1)

Country Link
CN (1) CN111442129A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112228588A (en) * 2020-10-28 2021-01-15 宁波市安利特机械有限公司 Electromagnetic valve for preventing metal pollution for medical equipment
CN112283395A (en) * 2020-10-16 2021-01-29 中国航发北京航空材料研究院 Valve diaphragm with high fatigue performance
CN114658881A (en) * 2022-04-15 2022-06-24 信众 Electric heating water leakage automatic closing system and water leakage detection method
WO2023024195A1 (en) * 2021-08-21 2023-03-02 浙江鸿友压缩机制造有限公司 Pilot-operated electronic unloading valve and compressor system equipped with same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112283395A (en) * 2020-10-16 2021-01-29 中国航发北京航空材料研究院 Valve diaphragm with high fatigue performance
CN112228588A (en) * 2020-10-28 2021-01-15 宁波市安利特机械有限公司 Electromagnetic valve for preventing metal pollution for medical equipment
WO2023024195A1 (en) * 2021-08-21 2023-03-02 浙江鸿友压缩机制造有限公司 Pilot-operated electronic unloading valve and compressor system equipped with same
CN114658881A (en) * 2022-04-15 2022-06-24 信众 Electric heating water leakage automatic closing system and water leakage detection method

Similar Documents

Publication Publication Date Title
CN111442129A (en) Novel corrosion-resistant solenoid valve
US6488050B1 (en) Pneumatic valve assembly
KR101877293B1 (en) High pressure regulator
CN212203319U (en) Novel corrosion-resistant solenoid valve
CN103574091B (en) Be applicable to the valve assembly in seabed
CN202946714U (en) Pneumatic diaphragm valve
CN203730901U (en) Energy-saving multifunctional pilot electromagnetic valve with automatic compensation valve core
CN113324079B (en) Low-power consumption regulating valve with cut-off function
CN202209430U (en) Hydraulic control switch valve
CN107061786B (en) Corrosion-resistant diaphragm valve
CN114576365B (en) Pilot diaphragm type normally open electromagnetic valve structure
CN112431932A (en) Isolated anticorrosive solenoid valve
CN212643628U (en) Double-valve-cover vacuum baffle valve
CN210318742U (en) Zero-pressure-difference normally open electromagnetic valve
CN112178211B (en) Ultralow-temperature electromagnetic pneumatic stop valve
CN211715881U (en) Pilot-operated electromagnetic stop valve device
JP2001108131A (en) Piston valve
CN219102117U (en) Double-layer sealing lifting check valve
CN101806375B (en) Valve rod leak-proof structure
CN100375856C (en) Balance type valve of electric valve
CN215487721U (en) Piston type pilot electromagnetic valve and piston sealing structure thereof
CN219549740U (en) Electromagnetic valve anti-corrosion structure
CN216768385U (en) Butterfly valve with bidirectional sealing double-disc plate
CN217108228U (en) Mechanical valve structure
CN218992358U (en) Pilot-operated electromagnetic valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination