CN219570862U - Low-temperature solenoid valve core - Google Patents

Abstract

The utility model discloses a valve core of a low-temperature electromagnetic valve, which comprises a valve body, wherein the valve body comprises a water inlet cavity and a water outlet cavity, a cavity is formed in the valve body, a valve core is arranged in the cavity, the valve core is in sliding connection with the cavity, the upper end of the valve core is fixedly connected with a spring, the other end of the spring is fixedly connected with the valve body above the cavity, an interlayer is fixedly connected between the valve core, the lower end of the valve core is fixedly connected with a plug, the lower end surface of the plug is inverted concave, an annular groove is formed at the joint of the water inlet cavity and the water outlet cavity, and a coil is arranged outside the cavity.

Description

Low-temperature solenoid valve core

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to a valve core of a low-temperature electromagnetic valve.

Background

The low-temperature electromagnetic valve is one of electromagnetic valves, has the characteristics of simple valve structure, low temperature resistance, good wear resistance and the like, and is widely applied to automatic control systems of nuclear industry, aerospace industry, military industry, ships, petrochemical industry, electric power equipment, food machinery and the like.

In the prior art, the valve core of the electromagnetic valve is single in structure, particularly a low-temperature electromagnetic valve, when the electromagnetic valve is used in a low-temperature environment, the conditions of cracks and the like of the valve core of the electromagnetic valve are easily caused by large temperature difference between the inside and the outside of the electromagnetic valve, the air tightness of the electromagnetic valve is insufficient, the conditions of liquid flowing into a cavity and leakage of the valve core occur, and a solution is provided below aiming at the problems.

Disclosure of Invention

The utility model aims to provide a valve core of a low-temperature electromagnetic valve, which solves the problems in the prior art.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a low temperature solenoid valve case, includes the valve body, the valve body includes intake chamber and play water cavity, the cavity has been seted up to the valve body inside, be provided with the case in the cavity, case and cavity sliding connection, case upper end fixedly connected with spring, the valve body fixed connection of spring other end and cavity top, fixedly connected with interlayer in the middle of the case, case lower extreme fixedly connected with end cap, the terminal surface is down "concave" under the end cap, annular groove has been seted up to intake chamber and play water cavity junction, the valve body is located the cavity outside and is provided with the coil.

By adopting the technical scheme, the valve core is arranged in the cavity, the coil is arranged outside the cavity, the spring is fixedly connected to the upper part of the valve core, the valve core is subjected to magnetic force when the coil is electrified, the spring is compressed, the water inlet cavity and the water storage cavity are communicated, when the coil is powered off, the valve core is not influenced by the magnetic force, the spring is deformed in a recovery manner, the valve core is pushed downwards, the plug and the annular groove below the valve core are matched, the connection of the water inlet cavity and the water outlet cavity is isolated, the contact area of the sealing part is enlarged by the inverted concave shape of the plug and the annular groove, the air tightness of the electromagnetic valve is further improved, the interlayer is arranged above the plug, if a small amount of liquid penetrates through the plug, the interlayer can play a further blocking role, the liquid is prevented from entering the part above the cavity, and the operation of the electromagnetic valve is influenced.

Preferably, the surface of the plug is fixedly connected with a rubber layer, and the rubber layer is made of fluoroether rubber.

By adopting the technical scheme, the rubber layer can play a role in buffering, and the vitrification characteristic and crystallization characteristic of fluoroether rubber are adopted, so that the rubber can still keep elasticity in a low-temperature environment, hard collision of the plug is avoided, damage is generated, friction force can be increased, and air tightness is improved.

Preferably, the diameters of the plug and the interlayer are consistent, and the diameters of the plug and the interlayer are matched with the inner diameter of the cavity.

By adopting the technical scheme, the diameters of the plug and the interlayer are consistent, and the plug is matched with the cavity, so that the air tightness is improved, and the liquid is prevented from flowing into the upper half part of the cavity.

Preferably, a filter screen is fixedly connected in the water inlet cavity.

By adopting the technical scheme, the filter screen can filter relatively large impurities in liquid, and the impurities are prevented from entering the annular groove in the filter screen, so that the plug and the annular groove cannot be matched, and the electromagnetic valve is prevented from leaking.

Preferably, the tail ends of the water inlet cavity and the water outlet cavity are fixedly connected with quick connectors.

By adopting the technical scheme, the quick connector is convenient for the installation of the electromagnetic valve.

Preferably, the diameter of the plug is larger than the diameter of the water inlet cavity and the diameter of the water outlet cavity.

By adopting the technical scheme, the sealing effect of the plug on the pipeline can be ensured.

The beneficial effects are that: 1. according to the low-temperature electromagnetic valve, the plug and the interlayer are fixedly connected to the valve core, the diameter of the plug and the diameter of the interlayer are matched with the inner diameter of the cavity, two layers of protection effects can be achieved, and liquid is prevented from entering the part above the cavity.

2. The valve core plug of the low-temperature electromagnetic valve is inverted concave, an annular groove is formed below the plug, namely at the joint of the water inlet cavity and the water outlet cavity, the plug is matched with the annular groove, the contact area is increased, the air tightness is improved, and the leakage of the valve core is prevented.

3. The rubber layer is arranged on the plug of the low-temperature electromagnetic valve, so that the plug is prevented from being damaged due to hard collision, and meanwhile, the rubber layer is made of fluoroether rubber, so that the elasticity can be ensured in a low-temperature environment.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

fig. 2 is an enlarged schematic diagram showing a in fig. 1 according to an embodiment.

Reference numerals: 1. a valve body; 2. a water inlet cavity; 3. a water outlet cavity; 4. a cavity; 5. a valve core; 6. a spring; 7. an interlayer; 8. a plug; 9. an annular groove; 10. a coil; 11. a rubber layer; 12. a filter screen; 13. a quick connector.

Description of the embodiments

The following description is only of the preferred embodiments of the present utility model, and the scope of the present utility model should not be limited to the examples, but should be construed as falling within the scope of the present utility model. It should also be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present utility model are intended to be comprehended within the scope of the present utility model.

See the figure 1 shows, a low temperature solenoid valve case, including valve body 1, valve body 1 includes intake chamber 2 and apopore 3, and intake chamber 2 and apopore 3 end all fixedly connected with quick-operation joint 13 are convenient for install the solenoid valve in the pipeline.

See the cavity 4 that has been offered to the inside cavity 4 of valve body 1 shown in fig. 1, be provided with case 5 in the cavity 4, case 5 and cavity 4 sliding connection, valve body 1 is located the cavity 4 outside and is provided with coil 10, when coil 10 circular telegram, case 5 upwards moves, inlet chamber 2 and play water chamber 3 can communicate, case 5 upper end fixedly connected with spring 6, the valve body 1 fixed connection of spring 6 other end and cavity 4 top, spring 6 is compressed when case 5 upwards moves, when coil 10 outage, case 5 does not receive magnetic force influence, spring 6 resumes deformation, promote case 5 downwardly moving, realize the closure of pipeline.

See fig. 1 and 2 and show, fixedly connected with interlayer 7 in the middle of the case 5, case 5 lower extreme fixedly connected with end cap 8, end cap 8 and interlayer 7 diameter agree with the inside diameter of cavity 4, utilize end cap 8 and interlayer 7 to form double-deck waterproof construction, effectively prevent that liquid from getting into in the cavity 4, end cap 8 lower extreme face is "concave" type, annular groove 9 has been seted up to inlet chamber 2 and play water chamber 3 junction, utilize end cap 8's structure and annular groove 9 to cooperate, increase both area of contact, effectively improve the closure effect of solenoid valve, simultaneously, end cap 8 diameter is bigger than inlet chamber 2 diameter and play water chamber 3 diameter, more be favorable to the closure effect of end cap 8, but inlet chamber 2 internal fixation has filter screen 12, solid impurity filtering, avoid solid impurity to get into annular groove 9 in, lead to end cap 8 and annular groove 9 can not be closed, influence the solenoid valve effect.

As shown in fig. 1 and 2, the rubber layer 11 is fixedly connected to the surface of the plug 8, so that the hard collision of the plug 8 can be effectively reduced, the crack of the plug 8 is prevented, the rubber layer 11 is made of fluoroether rubber, and the elasticity of the rubber in a low-temperature environment is ensured.

Claims (6)

1. The utility model provides a low temperature solenoid valve case, includes valve body (1), valve body (1) are including intake chamber (2) and play water chamber (3), cavity (4) have been seted up to valve body (1) inside, a serial communication port, be provided with case (5) in cavity (4), case (5) and cavity (4) sliding connection, case (5) upper end fixedly connected with spring (6), valve body (1) fixedly connected with interlayer (7) in the middle of spring (6) other end and cavity (4) top, case (5) lower extreme fixedly connected with end cap (8), annular groove (9) have been seted up to end surface under end cap (8), valve body (1) are located cavity (4) outside and are provided with coil (10).

2. The low-temperature electromagnetic valve core according to claim 1, wherein a rubber layer (11) is fixedly connected to the surface of the plug (8), and the rubber layer (11) is made of fluoroether rubber.

3. The low-temperature electromagnetic valve core according to claim 1, wherein the diameters of the plug (8) and the interlayer (7) are consistent, and the diameters of the plug (8) and the interlayer (7) are matched with the inner diameter of the cavity (4).

4. The low-temperature electromagnetic valve core according to claim 1, wherein a filter screen (12) is fixedly connected in the water inlet cavity (2).

5. The low-temperature electromagnetic valve core according to claim 1, wherein the tail ends of the water inlet cavity (2) and the water outlet cavity (3) are fixedly connected with a quick connector (13).

6. A low temperature solenoid valve cartridge according to claim 1 wherein the plug (8) has a diameter greater than the inlet (2) and outlet (3) diameters.