CN216923294U - Sealing diaphragm and electromagnetic valve using same - Google Patents

Abstract

The utility model relates to the technical field of electromagnetic valve sealing, and discloses a sealing diaphragm and an electromagnetic valve using the same, wherein the sealing diaphragm comprises: the sealing structure comprises a sealing framework, a rubber part and a plastic film which are arranged in sequence, wherein a sealing surface for sealing is arranged on the plastic film. Because the base material of the sealing diaphragm is rubber, the sealing diaphragm has changeability and can ensure the sealing reliability, and the utility model improves the reliability of the valve port sealing of the electromagnetic valve.

Description

Sealing diaphragm and electromagnetic valve using same

Technical Field

The utility model relates to the technical field of electromagnetic valve sealing, in particular to a sealing diaphragm and an electromagnetic valve applying the sealing diaphragm.

Background

The direct-acting diaphragm valve is widely applied to the market, and only needs to be applied to the on-off of various liquid paths; the electromagnetic valve mainly has the advantages that the structure is simple, the service life is long, the reliability is high, working media do not flow into the electromagnetic valve, the isolation diaphragm can completely isolate the media, and the electromagnetic valve is prevented from being corroded by the media, particularly acidic substances or strong corrosive substances; and thus are used in various fluid path fields.

In the prior art, the current isolation diaphragm valve mainly uses rubber to realize isolation and sealing, or uses plastic to realize isolation and sealing; the sealing performance of the rubber isolation is good, however, the rubber sealing is easy to change, the corrosion resistance of the rubber piece is a certain defect due to the fact that the rubber piece is made of synthetic rubber, the corrosion resistance of the rubber piece is limited even if the perfluoro rubber is used, and a specific formula is used for a special medium. In addition, the plastic isolation has good corrosion resistance, however, the plastic has a common sealing effect due to high hardness, and is easy to crack, deform and other abnormalities in the actual action process due to poor toughness.

Therefore, how to provide a sealing diaphragm and a solenoid valve using the same to improve the reliability of the sealing of the valve port of the solenoid valve is a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sealing diaphragm and an electromagnetic valve applying the same so as to improve the reliability of sealing of a valve port of the electromagnetic valve.

To this end, according to a first aspect, an embodiment of the present invention discloses a sealing membrane, including: the sealing structure comprises a sealing framework, a rubber part and a plastic film which are arranged in sequence, wherein a sealing surface for sealing is arranged on the plastic film.

The utility model is further provided that the rubber piece is sleeved at one end of the sealing framework, and the plastic film is coated at one end of the rubber piece.

The utility model is further provided that one end of the sealing framework is provided with a first clamping groove, and the other end of the sealing framework is provided with a second clamping groove.

The utility model is further provided that the plastic film is arranged in a circular or square shape.

The utility model is further configured such that the plastic film is made of polytetrafluoroethylene.

According to a second aspect, an embodiment of the present invention discloses a solenoid valve, including: the method comprises the following steps: according to the first aspect, the sealing diaphragm, the valve body, the upper cover, the valve pressing block, the shell and the electromagnetic assembly are arranged, the upper cover is located at one end of the valve body, the valve pressing block is located at the other end of the valve body, the valve pressing block and the electromagnetic assembly are arranged in the shell, and the electromagnetic assembly is used for controlling the sealing diaphragm to seal the valve body.

The utility model is further arranged in that a connecting wire connected with the electromagnetic assembly is arranged in the shell, and the connecting wire is used for receiving external power input.

The electromagnetic component comprises a metal plate frame and an electromagnetic framework arranged in the metal plate frame, the electromagnetic framework is wound with an electromagnetic coil, a stop iron and a movable iron core are sequentially arranged in the electromagnetic framework, a spring abutted against the movable iron core is embedded in one end of the stop iron, and the sealing membrane is fixedly connected with the movable iron core.

The electromagnetic framework is further provided with a sleeve in an embedded mode, one end of the sleeve penetrates through the sheet metal frame, and the sleeve is used for wrapping the stop iron and the movable iron core.

The utility model is further provided that the screw penetrates through the upper cover, the valve body and the valve pressing block in sequence, and the screw is in threaded connection with the sheet metal frame.

The utility model has the following beneficial effects: the sealing diaphragm comprises a sealing framework, a rubber piece and a plastic film which are sequentially arranged, wherein a sealing surface for sealing is arranged on the plastic film, and the base material of the sealing diaphragm is rubber, so that the sealing diaphragm has changeability and can ensure the sealing reliability, and further, the sealing diaphragm and the electromagnetic valve using the sealing diaphragm are provided, and the sealing reliability of the valve port of the electromagnetic valve is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of an exploded structure of a sealing membrane disclosed in this embodiment;

FIG. 2 is a schematic cross-sectional view of a sealing membrane according to the present disclosure;

fig. 3 is a schematic perspective view of a solenoid valve disclosed in this embodiment;

FIG. 4 is a schematic diagram of an explosion structure of a solenoid valve disclosed in the present embodiment;

fig. 5 is a schematic cross-sectional structure diagram of a solenoid valve disclosed in this embodiment.

Reference numerals: 1. an upper cover; 2. a valve body; 3. sealing the membrane; 31. sealing the framework; 311. a first card slot; 312. a second card slot; 32. a rubber member; 33. a plastic film; 331. a sealing surface; 4. valve briquetting; 5. a movable iron core; 6. a sheet metal frame; 7. a spring; 8. blocking iron; 9. an electromagnetic coil; 10. a housing; 11. a sleeve; 12. an electromagnetic framework; 13. a connecting wire; 14. and (4) screws.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being 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 "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The embodiment of the utility model discloses a sealing diaphragm 3, as shown in fig. 1 and 2, comprising: the sealing frame 31, the rubber member 32 and the plastic film 33 are arranged in this order, and the plastic film 33 is provided with a sealing surface 331 for sealing.

The sealing surface 331 plays a role in sealing, and since the base material of the sealing diaphragm 3 is rubber, the sealing diaphragm 3 has changeability, and the sealing reliability can be ensured.

As shown in fig. 1 and 2, the rubber member 32 is sleeved on one end of the sealing frame 31, and the plastic film 33 is coated on one end of the rubber member 32. It should be noted that the plastic film 33 is mounted at one end of the rubber member 32 through a film covering process, and the plastic film plays a role in sealing, so that the electromagnetic valve is conveniently sealed through the plastic film 33.

As shown in fig. 1 and 2, one end of the sealing frame 31 is provided with a first engaging groove 311, and the other end of the sealing frame 31 is provided with a second engaging groove 312. In the specific implementation process, the rubber member 32 is sleeved in the first engaging groove 311. The first card slot 311 and the second card slot 312 are both arranged in a ring shape.

As shown in fig. 1 and 2, the plastic film 33 is disposed in a circular or square shape. It should be noted that, the plastic film 33 is arranged in a circular or square shape, so that the diaphragm opening of the solenoid valve can be conveniently sealed.

As shown in fig. 1 and 2, the plastic film 33 is made of polytetrafluoroethylene. It should be noted that, the tolerance of the polytetrafluoroethylene is very good, and the polytetrafluoroethylene is applicable to most reagents, such as concentrated sulfuric acid, hydrofluoric acid and other strongly corrosive reagents, so that the reliability of the use of the electromagnetic valve is ensured and the application field of the electromagnetic valve is widened.

According to a second aspect, an embodiment of the present invention discloses a solenoid valve, as shown in fig. 3 to 5, including: the method comprises the following steps: like sealed diaphragm 3, valve body 2, upper cover 1, valve briquetting 4, shell 10 and the electromagnetic component of above-mentioned first aspect, upper cover 1 is located the one end of valve body 2, and valve briquetting 4 is located the other end of valve body 2, and valve briquetting 4 all sets up in shell 10 with the electromagnetic component, and the electromagnetic component is used for controlling sealed diaphragm 3 and seals valve body 2. In the specific implementation process, the valve pressing block 4 is embedded at one end of the valve body 2 opposite to the upper cover 1.

It should be noted that the electromagnetic assembly plays a driving role, and the electromagnetic assembly controls the sealing membrane 3 to be close to or far away from the valve body 2, so as to close or open the valve body 2.

As shown in fig. 3-5, a connecting wire 13 is provided inside the housing 10 for connecting to the electromagnetic assembly, and the connecting wire 13 is used for receiving an external power input. The connection line 13 is connected to the solenoid 9, and external electric energy is input to the solenoid valve through the connection line 13.

As shown in fig. 3-5, the electromagnetic assembly includes a sheet metal frame 6 and an electromagnetic framework 12 disposed in the sheet metal frame 6, the electromagnetic framework 12 is wound with an electromagnetic coil 9, a stop iron 8 and a movable iron core 5 are sequentially installed in the electromagnetic framework 12, a spring 7 abutted to the movable iron core 5 is embedded in one end of the stop iron 8, and the sealing membrane 3 is fixedly connected to the movable iron core 5. In the specific implementation, the electromagnetic coil 9 is connected to the connecting line 13.

When the electromagnetic valve is not energized, the movable iron core 5 drives the sealing diaphragm 3 to abut against the aperture of the valve body 2 under the acting force of the spring 7, so as to seal the valve body 2; after the electromagnetic valve is electrified, the electromagnetic coil 9 generates electromagnetic force to enable the stop iron 8 to adsorb the movable iron core 5, and the sealing diaphragm 3 is driven to move due to the fixed connection of the sealing diaphragm 3 and the movable iron core 5, so that the sealing diaphragm 3 is far away from the valve body 2, and the electromagnetic valve is opened.

As shown in fig. 4 and 5, a sleeve 11 is embedded in the electromagnetic frame 12, one end of the sleeve 11 penetrates through the sheet metal frame 6, and the sleeve 11 is used for covering the stop iron 8 and the movable iron core 5. In a specific implementation process, the movable iron core 5 is sleeved in the second clamping groove 312. It should be noted that, because the movable iron core 5 is connected to the sealing diaphragm 3, the sealing diaphragm 3 is driven to move by the movement of the movable iron core 5, so as to seal or open the electromagnetic valve.

As shown in fig. 4 and 5, the screw 14 sequentially penetrates through the upper cover 1, the valve body 2 and the valve pressing block 4, and the screw 14 is in threaded connection with the sheet metal frame 6. In a specific implementation, the number of screws 14 is set to four. It should be noted that, as the screw 14 sequentially penetrates through the upper cover 1, the valve body 2 and the valve pressing block 4, the screw 14 is in threaded connection with the sheet metal frame 6, the electromagnetic valve is conveniently fastened,

the working process is as follows: when the electromagnetic valve is not electrified, the movable iron core 5 of the electromagnetic valve is jacked to the aperture of the valve body 2 under the action of the spring 7, and the valve body 2 is sealed; when the electromagnetic coil 9 is electrified, the coil is magnetized to generate magnetic force, and the movable iron core 5 is attracted under the action of the electromagnetic force because the sealing membrane 3 and the movable iron core 5 are installed together; the sealing membrane 3 is simultaneously pulled down, so that the electromagnetic valve is opened; after the power failure, the electromagnetic force disappears, and the movable iron core 5 resets under the acting force of the spring 7, so that the valve body 2 is sealed.

The working principle is as follows: the sealing diaphragm 3 comprises a sealing framework 31, a rubber part 32 and a plastic film 33 which are sequentially arranged, a sealing surface 331 for sealing is arranged on the plastic film 33, the sealing surface 331 plays a role in sealing, and the sealing diaphragm 3 has changeability and can also ensure the sealing reliability because the base material of the sealing diaphragm 3 is rubber, so that the sealing diaphragm 3 and the electromagnetic valve using the sealing diaphragm 3 are provided, and the reliability of sealing the valve port of the electromagnetic valve is improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the utility model.

Claims (10)

1. A sealing membrane, comprising: the sealing structure comprises a sealing framework (31), a rubber piece (32) and a plastic film (33) which are arranged in sequence, wherein a sealing surface (331) for sealing is arranged on the plastic film (33).

2. The sealing membrane according to claim 1, wherein the rubber member (32) is sleeved on one end of the sealing framework (31), and the plastic film (33) is coated on one end of the rubber member (32).

3. The sealing diaphragm according to claim 2, wherein one end of the sealing skeleton (31) is provided with a first clamping groove (311), and the other end of the sealing skeleton (31) is provided with a second clamping groove (312).

4. Sealing membrane according to claim 1, characterized in that the plastic film (33) is arranged in a circle or square.

5. Sealing membrane according to any of claims 1 to 4, characterized in that the plastic film (33) is made of polytetrafluoroethylene.

6. A solenoid valve, comprising: the sealing membrane (3) according to any one of claims 1 to 5, a valve body (2), an upper cover (1), a valve pressing block (4), a housing (10) and an electromagnetic assembly, wherein the upper cover (1) is located at one end of the valve body (2), the valve pressing block (4) is located at the other end of the valve body (2), the valve pressing block (4) and the electromagnetic assembly are both arranged in the housing (10), and the electromagnetic assembly is used for controlling the sealing membrane (3) to seal the valve body (2).

7. The solenoid valve according to claim 6, characterized in that a connecting wire (13) connected with the electromagnetic assembly is arranged in the housing (10), and the connecting wire (13) is used for receiving an external power input.

8. The electromagnetic valve according to claim 6, characterized in that the electromagnetic assembly comprises a sheet metal frame (6) and an electromagnetic framework (12) arranged in the sheet metal frame (6), the electromagnetic framework (12) is wound with an electromagnetic coil (9), a stop iron (8) and a movable iron core (5) are sequentially arranged in the electromagnetic framework (12), a spring (7) abutted against the movable iron core (5) is embedded in one end of the stop iron (8), and the sealing membrane (3) is fixedly connected with the movable iron core (5).

9. The electromagnetic valve according to claim 8, characterized in that a sleeve (11) is embedded in the electromagnetic framework (12), one end of the sleeve (11) penetrates through the sheet metal frame (6), and the sleeve (11) is used for coating the stop iron (8) and the movable iron core (5).

10. The electromagnetic valve according to claim 8, characterized by further comprising a screw (14), wherein the screw (14) sequentially penetrates through the upper cover (1), the valve body (2) and the valve pressing block (4), and the screw (14) is in threaded connection with the sheet metal frame (6).

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