CN217081606U

CN217081606U - Pilot valve structure of electromagnetic valve

Info

Publication number: CN217081606U
Application number: CN202123368055.2U
Authority: CN
Inventors: 不公告发明人
Original assignee: Jiuyu Fluid Technology Shanghai Co ltd
Current assignee: Jiuyu Fluid Technology Shanghai Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-07-29
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a solenoid valve pilot valve structure, including the electromagnetic sleeve, the electromagnetic sleeve's the outside is around having the coil, and the intraductal top of electromagnetic sleeve is equipped with quiet iron core, and the intraductal bottom of electromagnetic sleeve is equipped with moves the iron core, a serial communication port, the outside of moving the iron core be equipped with the guide ring of two at least circles self-lubricating, move and be connected through the guide ring contact between iron core and the electromagnetic sleeve. Through the utility model discloses well self-lubricating material's guide ring reduces the electromagnetic sleeve inside wall and moves the wearing and tearing of iron core outer wall, prolongs the life of solenoid valve, reduces and moves the friction resistance of iron core in the motion to and realize that low friction is fixed a position between two parties and can really realize the low-power drive.

Description

Pilot valve structure of electromagnetic valve

Technical Field

The utility model relates to a solenoid valve pilot valve structure belongs to solenoid valve application technical field.

Background

As shown in fig. 1, currently, in the field of application of electromagnetic valves, the structure of the driving portion of the electromagnetic valve is mostly the electromagnetic force generated by the movable iron core 4 through the coil 2 of the electromagnetic valve, and the driving portion moves to the stationary iron core 1 along the pipe wall of the electromagnetic sleeve 3, so as to finally realize the attraction between the movable iron core and the stationary iron core, thereby achieving the purpose of opening and closing the valve or switching the flow channel of the valve. Due to the periodic relative sliding motion between the movable iron core 4 and the electromagnetic sleeve 3, the conventional structure is easy to cause the sliding abrasion between the movable iron core 4 and the electromagnetic sleeve 3, thereby causing the failure of the valve. The position of the movable iron core 4 relative to the valve port 5 can also be deviated, that is, the indentation 9 (the normal indentation generated when the movable iron core 4 and the electromagnetic sleeve 3 are not worn) on the sealing member 8 of the movable iron core 4 can be deviated, as shown in fig. 2 and 3, the deviation a between the valve port 5 and the indentation 9 generated after the movable iron core 4 and the electromagnetic sleeve 3 are worn makes the electromagnetic valve fail to seal, and generates leakage (the groove generated on the circumference by the original indentation 9 is eccentric, and the medium can leak through the groove), which causes defective factors such as poor sealing. Because the relative motion between the movable iron core 4 and the electromagnetic sleeve 3 belongs to the sliding friction of surface contact, the friction resistance is large, the movable iron core 4 and the electromagnetic sleeve 3 are easily abraded, and the shape and the size of the two parts are changed (as shown in fig. 4, the wall thickness of the electromagnetic sleeve 3 is generally 0.3 mm-0.5 mm and is very thin, the electromagnetic sleeve is easily abraded under the action of the periodic sliding friction between the movable iron core and the electromagnetic sleeve, particularly, the electromagnetic sleeve made of copper materials causes valve failure), so that the service life of the electromagnetic valve is shortened, and the valve failure is easily caused. Because the sliding friction between the movable iron core 4 and the electromagnetic sleeve 3 can generate larger frictional resistance, in order to meet the use function of the electromagnetic valve, the large frictional resistance needs to be overcome by using a high-power coil, so that the power consumption of the product is increased, low-power driving cannot be realized, and the requirements of application site low energy consumption and remote control on modern industrial intelligent control cannot be met.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the electromagnetic valve can avoid the failure of the electromagnetic valve caused by the direct sliding friction between the movable iron core and the electromagnetic sleeve, and realize low-power driving.

In order to solve the technical problem, the technical scheme of the utility model a solenoid valve pilot valve structure is provided, including the electromagnetic sleeve, the electromagnetic sleeve's the outside is around having the coil, and the intraductal top of electromagnetic sleeve is equipped with quiet iron core, and the intraductal bottom of electromagnetic sleeve is equipped with moves the iron core, its characterized in that, the outside of moving the iron core be equipped with the guide ring of two at least circles self-lubricating, move and be connected through the guide ring contact between iron core and the electromagnetic sleeve.

Preferably, the movable iron core is of a T-shaped structure, the top of the movable iron core of the T-shaped structure is a large head end, and the bottom of the movable iron core of the T-shaped structure is a small head end; a self-guiding structure is arranged on the inner wall of the electromagnetic sleeve close to the top of the movable iron core and is arranged below the top of the movable iron core; the guide ring is arranged below the self-guide structure.

Preferably, the outer side of the movable iron core is provided with at least two circles of grooves, each groove is internally provided with a guide ring, and the guide rings protrude out of the end surfaces of the grooves.

Through the utility model discloses well self-lubricating material's guide ring reduces the electromagnetic sleeve inside wall and moves the wearing and tearing of iron core outer wall, prolongs the life of solenoid valve, reduces and moves the friction resistance of iron core in the motion to and realize that low friction is fixed a position between two parties and can really realize the low-power drive. Meanwhile, the movable iron core can be reliably fixed at the middle position through the guide ring, and when the coil is electrified, the movable iron core, the electromagnetic sleeve and the valve port are ensured to be coaxial, so that the electromagnetic valve is beneficial to long-term reliable sealing.

Will the utility model discloses a product structure and prior art's product structure carry out contrast experiment under the same test condition, can obtain the utility model discloses a product structure has huge promotion to the life who improves the valve, promotes to 1000 ten thousand times from original 100 ten thousand times, reduces the 10W coil that original structure adopted to 0.5W ~ 1W simultaneously.

Drawings

FIG. 1 is a schematic view of a prior art valve seal arrangement;

FIG. 2 is a schematic view of the normal contact position of the plunger and the valve port;

FIG. 3 is a schematic view of the offset of the plunger with respect to the valve port;

FIG. 4 is a schematic diagram of the electromagnetic sleeve after being worn out;

fig. 5 is a schematic diagram of a solenoid valve pilot valve structure.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The utility model provides a solenoid valve pilot valve structure, as shown in fig. 5, it includes electromagnetic sleeve 3, and electromagnetic sleeve 3's the outside is around having coil 2, and top in the electromagnetic sleeve 3 is equipped with quiet iron core 1, and bottom in the electromagnetic sleeve 3 is equipped with moves iron core 4. Move the structure of iron core 4 and be T type structure, be equipped with self-directing structure 7 with the position of moving the contact of 4 tops of iron core on electromagnetic sleeve 3's the inner wall, self-directing structure 7 is located the below at 4 tops of moving iron core, be convenient for move the slip of iron core 4 in electromagnetic sleeve 3, the outside of moving iron core 4 is equipped with two at least rings of recesses, all be equipped with a guide ring 6 in every recess, guide ring 6 is protruding in the terminal surface of recess, move and be connected through the contact of guide ring 6 between iron core 4 and the electromagnetic sleeve 3. Wherein, the material of the guide ring 6 is self-lubricating material; the self-lubricating guide ring 6 is arranged according to the electromagnetic performance position. The top of the movable iron core 4 with the T-shaped structure is a big head end, and the bottom is a small head end. The guide ring 6 is arranged below the self-guiding structure 7. The self-guiding structure 7 is a landslide structure with the pipe diameter gradually changed from big to small and smooth on the inner wall of the electromagnetic sleeve 3 from top to bottom.

The utility model discloses during the use, through self-lubricating guide ring 6, with current electromagnetic sleeve 3 and move the direct sliding friction between iron core 4 and change into the friction between guide ring 6 and the electromagnetic sleeve 3, because guide ring 6 is the self-lubricating material, therefore reduced the wearing and tearing of electromagnetic sleeve 3 inner wall, prolong its life. Meanwhile, the movable iron core 4 can be reliably fixed at the middle position through the guide ring 6, and when the coil 2 is electrified, the movable iron core 4 is ensured to be coaxial with the electromagnetic sleeve 3 and the valve port, so that the long-term reliable sealing with the electromagnetic valve is facilitated (when the coil 2 is electrified, the movable iron core 4 is deviated due to the electromagnetic force action of the coil 2, namely is not coaxial with the valve port 5, and is easy to generate leakage failure).

Claims

1. The utility model provides a pilot valve structure of solenoid valve, includes electromagnetic sleeve (3), the outside of electromagnetic sleeve (3) is around having coil (2), and top in electromagnetic sleeve (3) is equipped with quiet iron core (1), and bottom in electromagnetic sleeve (3) is equipped with moves iron core (4), its characterized in that, the outside of moving iron core (4) be equipped with at least two circles self-lubricating guide ring (6), move and be connected through guide ring (6) contact between iron core (4) and the electromagnetic sleeve (3).

2. The pilot valve structure of the electromagnetic valve according to claim 1, characterized in that the movable iron core (4) is of a T-shaped structure, the top of the movable iron core (4) of the T-shaped structure is a big head end, and the bottom is a small head end; a self-guiding structure (7) is arranged on the inner wall of the electromagnetic sleeve (3) and close to the top of the movable iron core (4), and the self-guiding structure (7) is arranged below the top of the movable iron core (4); the guide ring (6) is arranged below the self-guide structure (7).

3. A pilot valve structure of electromagnetic valve according to claim 1, characterized in that the movable iron core (4) is provided with at least two circles of grooves at the outer side, each groove is provided with a guide ring (6), and the guide ring (6) protrudes from the end surface of the groove.