CN217381886U

CN217381886U - Electromagnetic valve with liquid viewing mirror

Info

Publication number: CN217381886U
Application number: CN202220843621.6U
Authority: CN
Inventors: 俞舟; 康志军
Original assignee: Dunan Environment Technology Co Ltd
Current assignee: Dunan Environment Technology Co Ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-09-06
Anticipated expiration: 2032-04-13

Abstract

The utility model relates to a solenoid valve of liquid mirror is looked in area, it includes: the valve body assembly comprises a valve seat, and a valve cavity is formed in the valve seat; one end of the electromagnetic component is a piston which can move in the valve cavity, and the fluid in the valve cavity is kept in a flow state or a disconnection state through the piston; the liquid sight glass is arranged on the valve seat and is integrated with the valve seat; the inner cavity of the liquid sight glass is communicated with the valve cavity. According to the utility model discloses, it is through looking the liquid mirror with the solenoid valve integration, and the medium condition can directly be observed on the solenoid valve to the integrated design, has simplified assembly process, saves space, improves the product integration degree, and the reduction system valve member uses quantity, simplifies the system's pipeline and arranges.

Description

Electromagnetic valve with liquid viewing mirror

Technical Field

The utility model relates to the technical field of valves, especially, relate to a solenoid valve of liquid mirror is looked in area.

Background

The liquid viewing mirror is an important part in a loop of a refrigeration system, a high-temperature sintering process of a ball glass and a steel part is adopted, the liquid viewing mirror product has attractive appearance, good strength and high transparency, the liquid viewing mirror is used for various refrigeration equipment, compression and other machinery, and the working principle of the liquid viewing mirror is that a medium in the system can be viewed through a wide-angle viewing mirror, so that bubbles or flash evaporation gas of the medium in the system can be easily seen, and whether the medium is properly filled or not is indicated.

However, the valve and the liquid sight glass used in the traditional technology are two independent products, in the using process, the valve and the liquid sight glass need to be welded in series, and then the whole of the valve and the liquid sight glass in series is welded on a pipeline, so that the welding spots are large in quantity, the process is complicated, and the occupied space is large.

Therefore, the electromagnetic valve and the liquid viewing mirror can be processed into an integrated structure. However, in the processing process, if the liquid level observation mirror is disposed at the end of the solenoid valve, the whole valve body cannot be balanced, and the housing of the liquid level observation mirror cannot be used as the housing of the solenoid valve, which increases the cost.

In summary, in order to solve the above problems, the present application develops a solenoid valve with a liquid sight glass.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a solenoid valve with a liquid sight glass for solving the problems of complicated welding process and large occupied space in the conventional technology in which a valve and the liquid sight glass are welded in series.

The valve body assembly comprises a valve seat, and a valve cavity is formed in the valve seat;

the electromagnetic assembly is provided with a piston which can move in the valve cavity, and the fluid in the valve cavity is kept in a circulating state or a disconnecting state through the piston;

the liquid sight glass is arranged on the valve seat and is integrated with the valve seat; the inner cavity of the liquid sight glass is communicated with the valve cavity.

Further, the valve body assembly also comprises a valve cover arranged on the valve seat, and the valve cavity is provided with a liquid inlet cavity and a liquid outlet cavity; the two ends of the valve seat are respectively provided with an inlet and an outlet which are communicated with the valve cavity;

an accommodating chamber is arranged in the valve seat, an opening is formed in the upper end of the accommodating chamber, and the liquid inlet cavity is a cavity between the inlet and the opening; the liquid outlet cavity is a cavity between the opening and the outlet; the liquid outlet cavity is communicated with the liquid inlet cavity through the opening.

Furthermore, look the liquid mirror and include base and lens, be equipped with in the base and look the liquid chamber, look the liquid chamber with the feed liquor chamber is linked together, the lens is located in the base.

Further, an indicator is arranged in the liquid viewing cavity;

the indicator is shown for mounting test paper.

Furthermore, a first step surface is arranged in the base, a second step surface is arranged on the outer edge of the base, and the lens is installed in an accommodating space between the first step surface and the second step surface.

Further, the opening faces the electromagnetic assembly; when the opening is abutted against the piston, the liquid outlet cavity is disconnected with the liquid inlet cavity; when the piston is far away from the opening, the liquid outlet cavity is communicated with the liquid inlet cavity.

Further, the electromagnetic assembly includes:

the static iron core, the first spring, the movable iron core, the second spring and the piston are sequentially arranged towards the opening direction; the static iron core, the first spring, the movable iron core and the second spring are arranged in the sleeve, and the piston is connected with the movable iron core through the second spring.

Further, the piston includes: the transmission rod, the upper gasket, the diaphragm and the lower gasket;

the upper gasket and the lower gasket are rigid sheets, and the diaphragm is an elastic sheet; the upper gasket, the diaphragm and the lower gasket are sequentially and coaxially arranged at the end part of the transmission rod close to the opening along the direction towards the opening; the other end of the transmission rod, which is far away from the opening, is abutted against the second spring.

Further, the diameter of the upper gasket is matched with the outer diameter of the movable iron core;

the lower gasket diameter is smaller than the opening inner diameter;

the diaphragm diameter is greater than the opening outer diameter.

Furthermore, the edge of the diaphragm is arranged on the valve seat in an overlapping mode, and the edge of the diaphragm is attached to the valve cover, so that a sealed cavity is formed between the diaphragm and the valve cover.

According to the electromagnetic valve with the liquid sight glass, the electromagnetic valve is integrated with the liquid sight glass, the medium condition can be directly observed on the electromagnetic valve through the integrated design, the assembly process is simplified, the space is saved, the product integration level is improved, the number of used system valves is reduced, and the system pipeline arrangement is simplified; the liquid sight glass is arranged on the valve seat, and the inner cavity of the liquid sight glass is communicated with the valve cavity, so that the electromagnetic valve has the advantages of better overall balance performance, stable gravity center and convenience in processing; meanwhile, the shell part of the liquid viewing mirror coincides with the shell part of the electromagnetic valve, so that the shell of the electromagnetic valve can be used as the shell of the liquid viewing mirror, the weight of a product is reduced, and the cost is saved.

Drawings

Fig. 1 is a structural diagram of a solenoid valve with a liquid sight glass according to an embodiment of the present invention;

fig. 2 is a structural diagram of a valve seat in a solenoid valve with a liquid sight glass according to an embodiment of the present invention;

fig. 3 is a transverse cross-sectional view of a solenoid valve with a liquid sight glass according to an embodiment of the present invention;

fig. 4 is a longitudinal sectional view of a solenoid valve with a liquid sight glass according to an embodiment of the present invention;

in the figure: 10-a valve seat; 101-a containment chamber; 11-opening; 110-a liquid outlet chamber; 12-liquid sight glass; 120-visual fluid chamber; 121-a lens; 122-an indicator; 123-base; 1231-visual window; 1232 — first step face; 1233-a second step face; 13-an outlet; 130-a liquid inlet cavity; 14-an inlet; 20-valve cover; 30-a liquid outlet pipe; 40-liquid inlet pipe; 50-an electromagnetic assembly; 51-a stationary core; 52-a first spring; 53-a movable iron core; 531-upper open cavity; 532-lower open cavity; 54-a second spring; 55-a piston; 551-transmission rod; 552-a latch; 554-upper gasket; 555-membrane; 556-lower gasket; 557-support sheet; 56-sleeve.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of a solenoid valve with a sight glass in an embodiment of the present invention, an embodiment of the present invention provides a solenoid valve with a sight glass, including: a valve body assembly, a sight glass 12 and an electromagnetic assembly 50; the sight glass 12, the valve body assembly and the electromagnetic assembly 50 are integrated and are processed in an integrated manner. The valve body assembly includes a valve seat 10 and a valve cover 20 disposed on the valve seat 10. A sealing element is arranged between the valve seat 10 and the valve cover 20; therefore, the sealing reliability of the valve body assembly can be improved, and the medium can be prevented from leaking from the gap where the valve seat 10 and the valve cover 20 are connected. Optionally, the seal is a teflon ring, i.e. made of teflon material.

The valve seat 10 is provided with an outlet 13 and an inlet 14 which are communicated with the valve cavity respectively at two ends as shown in figure 2; as shown in fig. 3, the valve chamber includes a liquid outlet chamber 110 and a liquid inlet chamber 130; an accommodating chamber 101 is arranged in the valve seat 10, and the outlet 13 is communicated with the inner space of the accommodating chamber 101; the containing chamber 101 has an opening 11 facing the valve cover 20, the opening 11 is matched with the electromagnetic assembly 50, and the electromagnetic assembly 50 controls the opening and closing state of the opening 11; the opening 11 communicates with the inlet 14. The chamber between the inlet 14 and the opening 11 constitutes an inlet chamber 130. The chamber between the opening 11 and the outlet 13 constitutes a liquid outlet chamber 110. The inlet 14 is communicated with the liquid inlet chamber 130, the outlet 13 is communicated with the liquid outlet chamber 110, and the liquid inlet chamber 130 is communicated with the liquid outlet chamber 110 through the opening 11. The outlet 13 is in communication with the outlet pipe 30 and the inlet 14 is in communication with the inlet pipe 40. Alternatively, the valve seat 10 may be made of a brass material having high ductility, or may be made by a machining process using a steel material.

The liquid viewing mirror 12 comprises a base 123 and a lens 121, the base 123 extends outwards from the outer wall of one side of the valve seat 10, the base 123 is provided with a liquid viewing window 1231 leading to the liquid inlet cavity 130, and the base 123 is internally provided with a liquid viewing cavity 120; a first step surface 1232 is arranged in the base 123, a second step surface 1233 is arranged on the outer edge of the base, and the lens 121 is installed on the first step surface 1232; the sight glass 120 is connected to the liquid inlet 130, so that the medium flowing state, the liquid level of the medium in the valve assembly, etc. can be directly observed through the lens 121, thereby determining whether the medium amount is properly filled, etc. As shown in fig. 4, an indicator 122 is disposed in the fluid viewing chamber 120, the indicator 122 is fixed to the inner wall of the valve seat 10, the indicator 122 is used for installing test paper, and the test paper on the indicator 122 can be directly observed through the lens 121; the test paper is used for measuring the moisture content in the medium, and the test paper generates corresponding color change under different moisture contents of the medium, so that the moisture content of the medium can be generally known.

Preferably, the lens 121 is mounted in the base 123 by riveting; the edge of the base 123 is turned over towards the center of the lens 121 by external force, so that the edge of the base 123 has enough pretightening force for the lens 121, the lens 121 is prevented from being separated from the base 123, and the sealing performance of the visual liquid cavity 120 is ensured. Optionally, the lens 121 is made of glass (such as soda lime glass or high borosilicate glass) or resin, or other transparent materials in the art. The lens 121 may be completely transparent or partially transparent, and is not limited herein.

As shown in fig. 4, the solenoid assembly 50 includes: a piston 55 movably disposed in the valve seat 10 and a guide assembly guiding the movement of the piston 55. The piston 55 can control opening and closing of the opening 11; when the piston 55 abuts against the opening 11, the liquid outlet cavity 110 is disconnected from the liquid inlet cavity 130; when the piston 55 moves away from the opening 11, the liquid outlet chamber 110 and the liquid inlet chamber 130 are communicated.

The guide assembly comprises a sleeve 56 which penetrates through the valve cover 20 and enters the inner space of the valve seat 10, and a static iron core 51, a first spring 52, a movable iron core 53 and a second spring 54 are sequentially arranged in the sleeve 56 from top to bottom; the static iron core 51 is fixedly arranged at one end of the sleeve 56 far away from the valve seat 10, and the movable iron core 53 is axially movably arranged in the sleeve 56; when the stationary core 51 is in the energized state, the movable core 53 moves relative to the stationary core 51 and is attracted to the stationary core 51. The first spring 52 abuts between the stationary core 51 and the movable core 53; the second spring 54 abuts between the piston 55 and the plunger 53, the second spring 54 is partially accommodated in the lower open chamber 532 of the lower end of the plunger 53, and when the second spring 54 is compressed to a limit, the second spring 54 is completely accommodated in the lower open chamber 532, and the plunger 53 directly abuts on the piston 55. The lower end portion of the first spring 52 is received in the upper open cavity 531 of the upper end of the movable iron core 53 to guide the expansion and contraction of the first spring 52 and prevent the first spring 52 from moving radially. The elastic coefficient of the second spring 54 is smaller than that of the first spring 52, so that when the static iron core 51 is in the power-off state, the first spring 52 acts on the movable iron core 53 and compresses the second spring 54 into the lower open cavity 532, the movable iron core 53 abuts against the piston 55 to the opening 11, the piston 55 blocks the opening 11, and the liquid outlet cavity 110 is disconnected from the liquid inlet cavity 130.

Specifically, when the static iron core 51 is in an energized state, magnetic force is generated, the movable iron core 53 moves towards the static iron core 51, when the medium pressure in the liquid outlet cavity 110 is greater than a threshold value, the piston 55 compresses the second spring 54 under the action of the medium pressure in the liquid outlet cavity 110 and is far away from the opening 11, and the liquid outlet cavity 110 is communicated with the liquid inlet cavity 130; when the static iron core 51 is in the power-off state, the magnetic force of the static iron core 51 disappears, the movable iron core 53 moves towards the piston 55 under the action of the elastic force of the first spring 52, the second spring 54 is completely accommodated in the lower open cavity 532 under the action of the force, the movable iron core 53 is directly abutted to the piston 55, the piston 55 is driven by the movable iron core 53 to move towards the opening 11 until being attached to the opening 11, and the liquid outlet cavity 110 is disconnected from the liquid inlet cavity 130.

Further, as shown in fig. 4, the piston 55 is a diaphragm piston including a transmission rod 551, an upper spacer 554, a diaphragm 555, and a lower spacer 556; upper washer 554 membrane 555 lower washer 556 drive rod 551 latch 552 passes through the lower washer 556, membrane 555, and upper washer 554 in sequence to fixedly mount the lower washer 556, membrane 555, and upper washer 554 at the end of the drive rod 551 proximate the opening 11; the other end of the transmission rod 551, which is far away from the opening 11, is abutted with the second spring 54; the diameter of the upper gasket 554 is matched with the outer diameter of the movable iron core 53; the lower gasket 556 diameter is smaller than the opening 11 inner diameter; the diameter of the membrane 555 is larger than the outer diameter of the opening 11; the upper pad 554 and the lower pad 556 are rigid sheets, and the membrane 555 is an elastic sheet.

More specifically, when the static iron core 51 is in an energized state to generate magnetic force, the movable iron core 53 moves towards the static iron core 51, when the pressure of a medium in the liquid outlet cavity 110 is greater than a threshold value, the diaphragm type piston is far away from the opening 11, the diaphragm 555 is deformed, and the liquid outlet cavity 110 is communicated with the liquid inlet cavity 130; when the static iron core 51 is in the power-off state, the magnetic force of the static iron core 51 disappears, the movable iron core 53 moves towards the piston 55 under the action of the elastic force of the first spring 52, the second spring 54 is completely accommodated in the lower open cavity 532 under the action of the force, the movable iron core 53 is directly abutted to the upper gasket 554, the diaphragm 555 is driven by the movable iron core 53 to move towards the opening 11 until being attached to the opening 11, and the liquid outlet cavity 110 is disconnected from the liquid inlet cavity 130.

As shown in fig. 4, the edge of the diaphragm 555 is overlapped on the valve seat 10 and attached to the valve cover 20, so that a sealed chamber is formed between the gasket and the valve cover 20 to isolate the medium in the valve seat 10 from contacting the solenoid assembly 50, and prevent the solenoid assembly 50 from being corroded by the medium. Optionally, the material of the membrane 555 is a metal material, and the metal material of the membrane 555 is stainless steel or manganese steel, so as to improve the strength of the pressure borne by the membrane 555 at the opening 11. Further, the surface of diaphragm 555 has still wrapped up sealing coating, and the sealing picture layer is nonmetal coating, helps promoting diaphragm 555's leakproofness, reduces its leakage rate. Optionally, the non-metal coating layer may be any one of a teflon coating layer or a silicone rubber coating layer.

As shown in fig. 4, an annular support sheet 557 is arranged below the membrane 555, the support sheet 557 is a rigid sheet, the inner ring diameter of the support sheet 557 is larger than the outer diameter of the opening 11, the outer ring diameter of the support sheet 557 is matched with the diameter of the membrane 555, and a certain distance is reserved between the support sheet 557 and the membrane 555 to accommodate the deformation distance of the membrane 555 and support the membrane 555 reaching the deformation limit, so that the membrane 555 is prevented from being damaged due to excessive deformation; the support plate 557 is provided with perforations for the passage of media.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a solenoid valve of liquid mirror is looked in area which characterized in that includes:

the electromagnetic assembly is provided with a piston which can move in the valve cavity, and the fluid in the valve cavity is kept in a flow state or a disconnection state through the piston;

2. The solenoid valve with a sight glass according to claim 1,

the valve body assembly also comprises a valve cover arranged on the valve seat, and the valve cavity is provided with a liquid inlet cavity and a liquid outlet cavity; the two ends of the valve seat are respectively provided with an inlet and an outlet which are communicated with the valve cavity;

3. The electromagnetic valve with a liquid sight glass according to claim 2, wherein the liquid sight glass comprises a base and a lens, a liquid viewing cavity is arranged in the base and communicated with the liquid inlet cavity, and the lens is arranged in the base.

4. The electromagnetic valve with the liquid sight glass according to claim 3, wherein an indicating frame is arranged in the liquid sight cavity; the indicator is shown for mounting test paper.

5. The solenoid valve with liquid sight glass according to claim 3, wherein a first step surface is provided in the base, a second step surface is provided on an outer edge of the base, and the lens is installed in an accommodating space between the first step surface and the second step surface.

6. The solenoid valve with sight glass of claim 2, wherein the opening is directed toward the solenoid assembly; when the opening is abutted against the piston, the liquid outlet cavity is disconnected with the liquid inlet cavity; when the piston is far away from the opening, the liquid outlet cavity is communicated with the liquid inlet cavity.

7. The solenoid valve with sight glass of claim 6, wherein the electromagnetic assembly comprises:

8. The solenoid valve with sight glass of claim 7, wherein the piston comprises: the transmission rod, the upper gasket, the diaphragm and the lower gasket;

9. The electromagnetic valve with the liquid sight glass according to claim 8, wherein the diameter of the upper gasket is matched with the outer diameter of the movable iron core;

the lower gasket diameter is smaller than the opening inner diameter;

the diaphragm diameter is greater than the opening outer diameter.

10. The solenoid valve with a sight glass of claim 8, wherein the edge of the diaphragm is overlapped on the valve seat and the edge of the diaphragm is attached to the valve cover, so that a sealed chamber is formed between the diaphragm and the valve cover.