CN217977694U

CN217977694U - Electromagnetic valve with liquid viewing mirror

Info

Publication number: CN217977694U
Application number: CN202220845339.1U
Authority: CN
Inventors: 俞舟; 马彦婷; 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: 2022-12-06
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; a liquid inlet and a liquid outlet are respectively arranged at two ends of the valve seat; one end of the electromagnetic component is a piston which can move in the inner cavity of the valve seat, and the fluid in the valve cavity keeps a flowing state or a disconnection state through the piston; the liquid viewing mirror is arranged at the liquid inlet or the liquid outlet; the liquid sight glass and the valve seat are integrated. The utility model discloses to look liquid mirror and disk seat and establish to integral structure to make the medium go out and directly get into behind the liquid cavity and look the liquid mirror, be convenient for observe the circulation state and the liquid level height of medium in this application, simplified assembly process, reduced manufacturing cost.

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 refrigerating system loop, adopts a high-temperature sintering process of a ball glass and a steel part, has beautiful appearance, good strength and high glass transparency, is used for various refrigerating equipment, compression and other machines, and has the working principle that a refrigerant of the system can be visually observed through a wide-angle viewing mirror, so that bubbles or flash evaporation gas in the system can be easily seen, and whether the refrigerant is properly required to be filled or not is indicated. The indicator elements in the sight glasses are highly sensitive to moisture and change color as the moisture content in the system changes.

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 valve and the whole body connected in series with the liquid sight glass are welded on a pipeline, so that the welding points are large in quantity, the process is complex, 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 fluid scope is disposed in the middle of the solenoid valve, the fluid may flow through the valve cavity that cannot be observed by the fluid scope in the middle of the solenoid valve, which may cause measurement errors. In addition, if the sight glass is arranged in the middle of the electromagnetic valve shell, the size of the sight glass is limited by the size of the electromagnetic valve shell, and the size of the sight glass is difficult to process to be large.

SUMMERY OF THE UTILITY MODEL

Therefore, the electromagnetic valve with the liquid sight glass needs to be provided for solving the problems that the welding process is complicated and the occupied space is large when the valve and the liquid sight glass are welded in series in the traditional technology.

A solenoid valve with a sight glass, comprising:

the valve body assembly comprises a valve seat, and a valve cavity is formed in the valve seat; a liquid inlet and a liquid outlet are respectively arranged at two ends of the valve seat;

one end of the electromagnetic component is a piston with a movable valve seat inner cavity, and the fluid in the valve cavity is kept in a flow state or a cut-off state through the piston;

the liquid viewing mirror is arranged on the liquid inlet or the liquid outlet; the liquid sight glass and the valve seat are integrated.

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

Furthermore, the liquid viewing mirror comprises a base and a lens, wherein a liquid viewing cavity is formed in the base, the lens is arranged in the base, and the liquid viewing cavity is communicated with the liquid outlet cavity.

Furthermore, a mounting rack is arranged in the liquid viewing cavity and used for mounting the 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.

Furthermore, the bottom of the accommodating chamber is provided with a through hole, the through hole is communicated with the liquid outlet, and the liquid outlet cavity is of an L-shaped tubular space structure.

Furthermore, an inlet is formed in one side, close to the liquid outlet, of the liquid observation mirror, and an outlet is formed in one side, far away from the liquid outlet, of the liquid observation mirror; the inlet and the outlet are communicated with the liquid viewing cavity; the inlet is communicated with the liquid outlet.

Further, the axes of the liquid inlet, the liquid outlet, the inlet and the outlet are all on the same straight line.

Further, the electromagnetic assembly includes:

the static iron core, the first spring, the movable iron core and the second spring are sequentially arranged towards the valve port 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 abutted against the second spring.

According to the electromagnetic valve with the liquid sight lens, the liquid sight lens and the valve seat are integrated, so that the assembly process is simplified, the production cost is reduced, the product integration level is improved, the use number of system valves is reduced, and the system pipeline arrangement is simplified; this application sets up in solenoid valve module's inlet or liquid outlet through looking the liquid mirror, is convenient for observe the circulation state of medium, reduces the flow monitoring error, looks at the size of a dimension of liquid mirror simultaneously and can not receive the restriction of solenoid valve module size.

Drawings

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

fig. 2A is a cross-sectional view of a solenoid valve with a sight glass according to an embodiment of the present invention;

fig. 2B is a partially enlarged view of a cross-sectional view of a solenoid valve with a sight glass according to an embodiment of the present invention;

fig. 3 is a structural view of a valve seat and a liquid sight glass in a solenoid valve with a liquid sight glass according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a valve seat and a liquid sight glass in a solenoid valve with a liquid sight glass according to an embodiment of the present invention.

In the figure: 10-a valve seat; 11-a containment chamber; 110-valve port; 12-liquid sight glass; 121-a lens; 122-a base; 1220-visual liquid window; 1221-a first step face; 1222-a second step face; 123-an inlet; 124-outlet; 13-a liquid inlet; 14-a liquid outlet; 20-valve cover; 30-a liquid inlet pipe; 40-a liquid outlet pipe; 120-visual fluid chamber; 130-liquid inlet cavity; 140-a liquid outlet chamber; 50-an electromagnetic assembly; 51-a cannula; 52-stationary core; 53-a first spring; 54-a movable iron core; 541-a first accommodating cavity; 542-a second receiving chamber; 55-a second spring; 56-a piston; 561-a transmission rod; 562-upper gasket; 563-a membrane sheet; 564-a lower pad; 565-bolt; 57-support sheet.

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 orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for 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 thus, 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 to implicitly indicate 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 explicitly defined 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 connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 "under," "beneath," and "under" a second feature may be directly under or obliquely under the second 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 1 shows a structural view of the electromagnetic valve with a liquid sight lens in an embodiment of the present invention, an embodiment of the present invention provides an electromagnetic valve with a liquid sight lens, 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 ring is further provided between the valve cover 20 and the valve seat 10 to prevent the medium in the valve seat 10 from flowing out of the gap between the valve cover 20 and the valve seat 10. Optionally, the sealing ring is a teflon ring, i.e. made of teflon material.

As shown in fig. 3, a liquid inlet 13 and a liquid outlet 14 are respectively arranged at two ends of the valve seat 10, the liquid inlet 13 is connected with a liquid inlet pipe 30, and a valve cavity is arranged in the valve seat 10; the valve seat 10 is provided with a receiving chamber 11, the receiving chamber 11 has a valve port 110 facing upward vertically, and the bottom of the receiving chamber 11 has a through hole communicating with the liquid outlet 14. The valve port 110 communicates with the liquid inlet 13 and the liquid outlet 14. The part of the valve cavity from the inlet 13 to the valve port 110 is an inlet cavity 130, the part of the valve cavity from the valve port 110 to the outlet 14 is an outlet cavity 140, and the on-off between the inlet cavity 130 and the outlet cavity 140 is adjusted and controlled by controlling the opening and closing of the valve port 110. The valve port 110 is adapted to the solenoid assembly 50, and the solenoid assembly 50 controls the opening and closing states of the valve port 110. The liquid inlet 13 is communicated with a liquid inlet pipe 30. Alternatively, the valve seat 10 may be made of a brass material having high ductility, and may be made through a machining process using a steel material.

As shown in fig. 3 and 4, the liquid viewing mirror 12 is disposed at the liquid outlet 14 or the liquid inlet 13. The sight glass 12 is integral with the valve seat 10. The liquid viewing mirror 12 of the present embodiment is disposed at the liquid outlet 14, the whole liquid viewing mirror 12 is a cylindrical structure having an upward open surface, and the hollow space of the liquid viewing mirror 12 is a liquid viewing cavity 120. An inlet 123 and an outlet 124 are respectively arranged on two sides of the liquid viewing lens 12, the inlet 123 is communicated with the liquid outlet 14, that is, the liquid viewing cavity 120 is communicated with the liquid outlet cavity 140. The liquid viewing lens 12 includes a base 122 and a lens 121 mounted in the base 122. The upper end of the liquid viewing mirror 12 extends upwards to form an annular base 122, and the middle space of the base 122 is a liquid viewing window 1220 communicated with the liquid viewing cavity 120; a first step surface 1221 is provided in the base 122, a second step surface 1222 is provided at the outer edge of the base 122, and the lens 121 is installed in the accommodating space between the first step surface 1221 and the second step surface 1222. The circulation state of the medium in the visual chamber 120, the liquid level of the medium, etc. can be directly observed through the lens 121, thereby determining whether the medium amount needs to be filled. The lens 121 is horizontally disposed in the base 122, so as to avoid the difficulty in correctly determining the liquid level of the medium in the sight glass 12 due to the refraction of light caused by the inclined disposition of the lens 121. The liquid outlet cavity 140 is an L-shaped tubular space structure, so that the medium entering the liquid outlet cavity 140 directly flows to the liquid scope 12 along the liquid outlet cavity 140, and turbulence or vortex generated when the medium enters a special-shaped or complex cavity (such as the liquid inlet cavity 130 in this embodiment) is avoided, which makes it difficult for the liquid scope 12 to observe the circulation state of the medium.

The liquid inlet 13, the liquid outlet 14, the inlet 123 and the outlet 124 are arranged on the same axis, so as to avoid that the medium enters the liquid viewing lens 12 and then forms turbulence or vortex in the liquid viewing cavity 120, which results in difficulty in observing the circulation state of the medium. Outlet 124 is in communication with outlet 40. The horizontal height of the lens 121 is not higher than that of the valve cover 20, so that the whole structure of the liquid crystal display device is harmonious, and the appearance is attractive and elegant. Preferably, the lens 121 is mounted in the base 122 by riveting; the edge of the base 122 is turned over toward the center of the lens 121 by an external force, so as to ensure that the base 122 has a sufficient pre-tightening force on the lens 121, prevent the lens 121 from being separated from the base 122, and ensure the sealing performance of the visual liquid chamber 120. 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 fully transparent or partially transparent, again without limitation.

Further, a mounting rack is arranged in the fluid viewing cavity 120, and the mounting rack is used for mounting test paper, and the test paper 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 approximately known.

As shown in fig. 1, 2A, 2B, the valve port 110 opens toward the valve cap 20; the valve cover 20 has a mounting hole at a position corresponding to the valve port 110, a sleeve 51 is disposed in the mounting hole, one end of the sleeve 51 is disposed toward the valve port 110, and one end of the sleeve 51 toward the valve port 110 is mounted in the mounting hole, so that the interior of the sleeve 51 is communicated with the valve chamber. Preferably, the part of the valve cover 20 that is in fit butt joint with the valve seat 10 is in a screw/bolt connection mode or the like.

As shown in fig. 2A and 2B, the electromagnetic assembly 50 includes: the sleeve 51, and the static iron core 52, the first spring 53, the movable iron core 54 and the second spring 55 which are arranged in the sleeve 51 from top to bottom in sequence.

The fixed iron core 52 is fixedly arranged at one end of the sleeve 51 far away from the valve port 110, the movable iron core 54 can freely move towards the direction close to or far away from the fixed iron core 52 in the sleeve 51, the first spring 53 is abutted against the position between the fixed iron core 52 and the movable iron core 54, the movable iron core 54 is provided with an open first accommodating cavity 541 towards the upper end of the fixed iron core 52, the first spring 53 is partially accommodated in the first accommodating cavity 541 in a natural state, and when the movable iron core 54 moves towards the fixed iron core 52 until being abutted against the fixed iron core 52, the first spring 53 is gradually compressed until being completely accommodated in the first accommodating cavity 541. One end of the second spring 55 abuts against the plunger 54, and the other end thereof extends out of the sleeve 51 and abuts against the piston 56. The movable iron core 54 has an open second accommodating chamber 542 towards the lower end of the valve port 110, the second spring 55 is partially accommodated in the second accommodating chamber 542 in a natural state, and when the movable iron core 54 moves away from the static iron core 52 until being abutted against the piston 56, the second spring 55 is gradually compressed until being completely accommodated in the second accommodating chamber 542. The elastic coefficient of the second spring 55 is smaller than that of the first spring 53, so that when the static iron core 52 is in the power-off state, the first spring 53 acts on the movable iron core 54 and compresses the second spring 55 into the second accommodating cavity 542, the movable iron core 54 abuts against the piston 56 to the valve port 110, the piston 56 blocks the valve port 110, and the liquid inlet cavity 130 is disconnected from the liquid outlet cavity 140.

Specifically, after the static iron core 52 is in the power-on state to generate magnetic force, the magnetic force applied to the movable iron core 54 is greater than the elastic force of the first spring 53, the movable iron core 54 moves towards the static iron core 52 until abutting against the static iron core 52, and when the pressure of the medium in the liquid inlet cavity 130 is greater than a threshold value, the piston 56 compresses the second spring 55 and is far away from the valve port 110 under the action of the pressure of the medium in the liquid inlet cavity 130, so that the liquid inlet cavity 130 is communicated with the liquid outlet cavity 140; when the static iron core 52 is in a power-off state, the magnetic force of the static iron core 52 disappears, the movable iron core 54 moves towards the piston 56 under the action of the first spring 53 until the movable iron core abuts against the piston 56, and pushes the piston 56 to move towards the valve port 110 until the piston 56 abuts against the valve port 110, and then the liquid inlet cavity 130 is disconnected from the liquid outlet cavity 140.

Further, as shown in fig. 2A and 2B, the piston 56 is a diaphragm piston, which includes: a drive link 561, an upper pad 562, a diaphragm 563, and a lower pad 564. The upper pad 562, diaphragm 563, and lower pad 564 are coaxially disposed in sequence in a direction toward the valve port 110, with the drive rod 561 being proximate to an end of the valve port 110. Pin 565, in turn, passes through lower shim 564, diaphragm 563, and upper shim 562 to secure lower shim 564, diaphragm 563, and upper shim 562 to the end of drive rod 561. The other end of the transmission rod 561, which is far away from the valve port 110, abuts against the second spring 55; the diameter of the upper gasket 562 is matched with the outer diameter of the movable iron core 54; lower gasket 564 has a diameter smaller than the inner diameter of valve port 110 such that lower gasket 564 is received in the orifice when diaphragm 563 abuts valve port 110; diaphragm 563 has a diameter that is larger than the outer diameter of valve port 110 such that diaphragm 563 substantially blocks valve port 110. The upper pad 562 and the lower pad 564 are rigid sheets, the diaphragm 563 is an elastic sheet, and the upper pad 562 and the lower pad 564 hold the diaphragm 563 to prevent the diaphragm 563 from being excessively deformed.

More specifically, when the stationary core 52 is in the power-on state to generate magnetic force, the movable core 54 overcomes the elastic force of the first spring 53 by the magnetic force and moves toward the stationary core 52 until abutting against the stationary core 52, when the pressure of the medium in the liquid inlet cavity 130 is greater than a threshold value, the diaphragm 563 deforms and the diaphragm 563-type piston is far away from the valve port 110, and the liquid inlet cavity 130 is communicated with the liquid outlet cavity 140; when the static iron core 52 is in a power-off state, the magnetic force of the static iron core 52 disappears, the movable iron core 54 moves towards the valve port 110 under the action of the elastic force of the first spring 53, the second spring 55 is completely accommodated in the second accommodating cavity 542 at the lower end of the movable iron core 54 under the action of the force, the movable iron core 54 is directly abutted against the upper gasket 562, the diaphragm 563 is driven by the upper gasket 562 to move towards the valve port 110 until the diaphragm is attached to the valve port 110, and the liquid inlet cavity 130 is disconnected from the liquid outlet cavity 140.

As shown in fig. 2A and 2B, the edge of the diaphragm 563 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 components in the sleeve 51 and prevent corrosion. The diaphragm 563 is made of a metal material, and the metal material of the diaphragm 563 is stainless steel or manganese steel, so as to increase the strength of the pressure applied to the valve port 110 by the diaphragm 563. The surface of diaphragm 563 has still wrapped up seal coat, and the sealed picture layer is nonmetal coating, helps promoting the leakproofness of diaphragm 563, reduces its leakage rate. The non-metal coating layer can be any one of a Teflon coating layer or a silicon rubber coating layer.

As shown in fig. 2A and 2B, an annular supporting plate 57 is disposed below the diaphragm 563, the supporting plate 57 is a rigid plate, an inner ring diameter of the supporting plate 57 is larger than an outer diameter of the valve port 110, an outer ring diameter of the supporting plate 57 is adapted to a diameter of the diaphragm 563, and a certain distance is formed between the supporting plate 57 and the diaphragm 563 to accommodate a deformation distance of the diaphragm 563 and support the deformed diaphragm 563, so as to prevent the diaphragm 563 from being damaged due to excessive deformation; the support plate 57 is provided with a plurality of 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 liquid viewing mirror is arranged at the liquid inlet or the liquid outlet; the liquid sight glass and the valve seat are integrated.

2. The solenoid valve with a liquid sight glass of claim 1, wherein the valve body assembly further 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;

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

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

4. The electromagnetic valve with a sight glass according to claim 3, wherein a mounting rack is arranged in the sight cavity, and the mounting rack is used for mounting test paper.

5. The solenoid valve with a 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 the accommodating space between the first step surface and the second step surface.

6. The solenoid valve with a liquid sight glass according to claim 2, wherein the bottom of the accommodating chamber has a through hole which is communicated with the liquid outlet.

7. The solenoid valve with a sight glass according to claim 2, wherein the liquid outlet cavity is an L-shaped tubular space structure.

8. The electromagnetic valve with the liquid sight glass according to claim 3, wherein an inlet is arranged on one side of the liquid sight glass close to the liquid outlet, and an outlet is arranged on one side of the liquid sight glass far away from the liquid outlet; the inlet and the outlet are communicated with the liquid viewing cavity; the inlet is communicated with the liquid outlet.

9. The solenoid valve with a sight glass according to claim 8, wherein the axes of the liquid inlet, the liquid outlet, the inlet and the outlet are all on the same straight line.

10. The solenoid valve with sight glass of claim 2, wherein the electromagnetic assembly comprises: