Dynamic sealing pressing cap for electromagnetic valve

Abstract

The dynamic sealing pressing cap comprises a pressing cap body, a partition piece and a dynamic balance piece are arranged in the pressing cap body, the partition piece divides the interior of the pressing cap into an environment ventilation cavity and an internal sealing cavity, and the environment ventilation cavity communicates with the external environment through a ventilation hole formed in the pressing cap; the internal sealing cavity is directly communicated with the working space of the electromagnetic valve; the dynamic balance part is arranged in the environment ventilation cavity and connected with the partition part, and when the pressure of airflow in the electromagnetic valve rises, the dynamic balance part can automatically adjust the position of the partition part, so that the ventilation hole is temporarily communicated with the internal sealing cavity, excess pressure is released, then the dynamic balance part is automatically closed, the partition part returns to the initial sealing position, and the sealing performance is ensured. The problem that a traditional fixed exhaust hole is prone to being polluted in the outdoor environment is effectively solved, and sealing durability and reliability are improved.

Description

Technical Field

[0001] This application belongs to the field of solenoid valve caps, and particularly relates to a dynamic sealing cap for solenoid valves. Background Art

[0002] The electromagnetic directional valve, as a core control component in the pneumatic system, generates magnetic force through the on-off of the electromagnetic coil to drive the iron core to achieve suction and release, thereby precisely regulating the working state of the pneumatic components. The rubber gaskets installed on both sides of the iron core ensure the strict sealing of the compressed air flow in the valve body, effectively preventing gas leakage and ensuring the stable operation and efficiency of the pneumatic system. The threaded cap equipped outside the iron core and the exhaust hole design on it solve the problem of the accumulation of excess gas or liquid that may occur during valve operation, avoiding the potential impact of abnormal pressure on the system performance, and is an important part to maintain the stable operation of the system.

[0003] However, in the harsh and changeable outdoor working environment, the exhaust hole on the cap becomes the gateway for external pollutants such as rainwater and dust to invade. Long-term action may cause adverse conditions such as corrosion and blockage inside the solenoid valve, thereby affecting its service life and performance. Therefore, the existing technology needs to be further improved. Utility Model Content

[0004] The utility model provides a dynamic sealing cap for solenoid valves to solve the problem that the exhaust hole on the cap of the electromagnetic directional valve is easily contaminated in a harsh outdoor environment.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A dynamic sealing cap for solenoid valves includes a cap body. A separator and a dynamic balance member are provided inside the cap body. The separator divides the interior of the cap into an environmental ventilation cavity and an internal sealing cavity. The environmental ventilation cavity is communicated with the external environment through a ventilation hole opened on the cap, and the internal sealing cavity is directly communicated with the working space of the solenoid valve. The dynamic balance member is arranged in the environmental ventilation cavity and is connected to the separator. The internal air flow pressure of the solenoid valve acting on the separator can make the dynamic balance member drive the separator to move, so that the ventilation hole is communicated with the internal sealing cavity. After the internal pressure of the solenoid valve decreases, the dynamic balance member drives the separator to move in the reverse direction, so that the separator returns to its initial position, disconnecting the communication between the ventilation hole and the internal sealing cavity to ensure the internal sealing of the solenoid valve.

[0007] The dynamic sealing gland for the solenoid valve of the present application divides the interior of the gland into an ambient ventilation cavity and an internal sealing cavity through a partition. When the internal air pressure of the solenoid valve rises, the dynamic balance member can automatically adjust the position of the partition, causing the ventilation hole to be briefly connected to the internal sealing cavity to release the excess pressure, and then automatically close, returning the partition to the initial sealing position to ensure tightness, effectively avoiding the problem that traditional fixed exhaust holes are vulnerable to contamination in outdoor environments, improving the durability and reliability of the seal. The ventilation hole only opens briefly when the internal pressure of the solenoid valve needs to be released, and the opening time is extremely short, greatly reducing the chance of external contaminants (such as rainwater and dust) entering the interior of the solenoid valve. This dynamic sealing mechanism significantly reduces the risks of corrosion, blockage, etc. caused by contamination, extends the service life of the solenoid valve, and thus reduces the maintenance cost.

[0008] In a preferred implementation, the partition is a sealing gasket, and the diameter of the sealing gasket is greater than the inner diameter of the gland.

[0009] The diameter of the sealing gasket is greater than the inner diameter of the gland. During assembly, the gasket will be compressed and closely adhere to the inner wall of the gland. This compressed state enhances the sealing force between the gasket and the contact surface, thereby improving the overall sealing effect.

[0010] In a preferred implementation, the dynamic balance member is a spring, one end of which is connected to the center of the partition, and the other end is connected to the inner wall of the gland body.

[0011] In a preferred implementation, the ventilation hole is provided on the side wall of the gland body.

[0012] When the sealing gasket is in the closed position, it closely adheres to the inner wall below the ventilation hole of the gland body, thereby preventing gas from entering the sealing cavity through the ventilation hole. When the internal pressure rises, the sealing gasket is pushed open, and the sealing gasket contacts the inner wall above the ventilation hole, forming a channel between the ventilation hole and the sealing cavity to allow gas to escape.

[0013] In a preferred implementation, at least two ventilation holes are provided and are located at the same height of the gland body.

[0014] The setting of multiple ventilation holes enables the internal pressure to be quickly released when exhaust is required, thereby maintaining the stable operation of the solenoid valve.

[0015] In a preferred implementation, an internal thread section is provided inside the gland body, corresponding to the external thread of the solenoid valve connection part, to achieve the connection between the gland body and the solenoid valve.

[0016] In a preferred implementation, an exhaust hole section is provided above the internal thread section, and the diameter of the exhaust hole section is smaller than the inner diameter of the internal thread section and equal to or smaller than the diameter of the partition.

[0017] In a preferred implementation, the internal thread section and the exhaust hole section are integrally formed and detachably connected to the compression cap body.

[0018] When these components are worn, damaged or need to be cleaned, they can be quickly removed from the compression cap body and replaced or repaired. Brief Description of the Drawings

[0019] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present application and do not constitute an improper limitation to the present utility model. In the drawings:

[0020] Figure 1 The structural schematic diagram of the first schematic embodiment of the dynamic sealing compression cap device for solenoid valves of the present application is shown;

[0021] Figure 2 The structural schematic diagram of the second schematic embodiment of the dynamic sealing compression cap device for solenoid valves of the present application is shown;

[0022] Reference Signs Description:

[0023] 1 - Compression cap body; 10 - Vent hole; 11 - Ambient ventilation cavity; 12 - Internal sealing cavity; 2 - Separator; 3 - Dynamic balance member; 4 - Internal thread section; 5 - Exhaust hole section. Detailed Embodiment

[0024] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In the present utility model, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium.

[0026] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. However, indicating a direct connection means that there is no connection relationship constructed through an excessive structure between the two connected main bodies, and they are only connected through the connection structure to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature.

[0028] The following is an explanation of the present utility model in conjunction with the attached drawings of the specification.

[0029] The specific solution adopted is as follows:

[0030] As Figure 1-2 shown, the present utility model provides a dynamic sealing gland for a solenoid valve, which includes a gland body 1. A separator 2 and a dynamic balance member 3 are arranged inside the gland body. The separator divides the interior of the gland into an ambient ventilation chamber 11 and an internal sealing chamber 12. The ambient ventilation chamber is communicated with the external environment through a ventilation hole 10 opened on the gland, and the internal sealing chamber is directly communicated with the working space of the solenoid valve; the dynamic balance member is arranged in the ambient ventilation chamber and connected to the separator. The internal air flow pressure of the solenoid valve acting on the separator 2 can cause the dynamic balance member to drive the separator to move, so that the ventilation hole 10 is communicated with the internal sealing chamber; after the internal pressure of the solenoid valve decreases, the dynamic balance member drives the separator to move in the reverse direction, so that the separator returns to its initial position, disconnecting the communication between the ventilation hole and the internal sealing chamber to ensure the internal sealing of the solenoid valve.

[0031] With the above structure, through the design of the dynamic balance member 3 and the partition member 2, the dynamic balance between the internal pressure of the solenoid valve and the external environment is achieved. When the internal air flow pressure of the solenoid valve increases, the dynamic balance member can automatically adjust the position of the partition member, causing the vent hole to be briefly connected to the internal sealed cavity, releasing the excess pressure, and then automatically closing to ensure the sealing performance, effectively avoiding the problem that the traditional fixed exhaust hole is vulnerable to pollution in the outdoor environment, improving the durability and reliability of the seal. The vent hole is only briefly opened when the internal pressure of the solenoid valve needs to be released, and the opening time is extremely short, greatly reducing the chance of external pollutants (such as rainwater and dust) entering the solenoid valve. This dynamic sealing mechanism significantly reduces the risks of corrosion, blockage, etc. caused by pollution, extends the service life of the solenoid valve, and thus reduces the maintenance cost.

[0032] As a preferred embodiment of the present application, the partition member 2 is a sealing gasket. The diameter of the sealing gasket is larger than the inner diameter of the compression nut. When assembling, the gasket will be compressed and closely attached to the inner wall of the compression nut. This compressed state enhances the sealing force between the gasket and the contact surface, thereby improving the overall sealing effect.

[0033] As a preferred embodiment of the present application, the dynamic balance member 3 is a spring, one end of which is connected to the center of the partition member and the other end is connected to the inner wall of the compression nut body.

[0034] When the internal air flow pressure of the solenoid valve increases, the pressure will act on the partition member 2, pushing it to move towards the inner wall of the compression nut body. At this time, the spring connected to the center of the partition member will be compressed and store elastic potential energy. As the partition member moves, the vent hole 10 is connected to the internal sealed cavity 12, allowing the excess gas to be discharged, thereby releasing the internal pressure. When the internal pressure of the solenoid valve decreases, the spring will release the stored elastic potential energy, pushing the partition member to move in the reverse direction and return to its initial position. In this way, the connection between the vent hole and the internal sealed cavity is closed, and the sealed state is restored again. This automatic reset function ensures that the solenoid valve can maintain good sealing performance when exhaust is not required inside.

[0035] The design of using a spring as the dynamic balance member is relatively simple and reliable, without the need for complex control mechanisms or external energy sources to drive, which not only reduces the manufacturing cost but also simplifies the operation and maintenance processes of the solenoid valve.

[0036] As a preferred embodiment of the present application, see Figure 1 and Figure 2, the vent hole 10 is provided on the side wall of the gland body 1. Further, at least two vent holes 10 are provided and located at the same height of the gland body. The arrangement of the vent holes causes the interior of the gland to be naturally divided by the partition into two chambers: one is an internal sealed chamber directly connected to the interior of the solenoid valve, and the other is an ambient vent chamber. When the sealing gasket is in the closed position, it closely adheres to the inner wall below the vent hole of the gland body, thereby preventing gas from entering the sealed chamber through the vent hole. When the internal pressure rises, the sealing gasket is pushed open, and the sealing gasket contacts the inner wall above the vent hole, forming a passage between the vent hole and the sealed chamber to allow gas to escape. As the pressure decreases, the seal returns to its original position under the action of the spring, closing the passage again. The structural design is more reasonable. The arrangement of multiple vent holes enables the internal pressure to be quickly released when exhaust is required, thus maintaining the stable operation of the solenoid valve.

[0037] As a preferred embodiment of the present application, an internal thread section 4 is provided inside the gland body 1, corresponding to the external thread of the solenoid valve connection part, to achieve the connection between the gland body 1 and the solenoid valve. Further, an exhaust hole section is provided at the upper part of the internal thread section. The diameter of the exhaust hole section is smaller than the inner diameter of the internal thread section and equal to or smaller than the diameter of the partition. The diameter of the exhaust hole section being equal to or smaller than the diameter of the partition ensures that the large-diameter partition can be smoothly installed and sealed above the exhaust hole section. The smaller diameter of the exhaust hole also helps prevent foreign matters such as dust and impurities outside the system from entering the system interior, thereby maintaining the cleanliness and normal operation of the system.

[0038] As a preferred embodiment of the present application, the internal thread section 4 and the exhaust hole section 5 are integrally formed and detachably connected to the gland body 1.

[0039] Since the internal thread section 4 and the exhaust hole section 5 are detachably connected to the gland body, when these components are worn, damaged, or need to be cleaned, they can be quickly removed from the gland body and replaced or repaired. The integrated internal thread exhaust section can be threadedly connected to the gland body, and a sealant can be applied to the thread surface or a sealing gasket can be installed to enhance the sealing performance.

[0040] In the present utility model, the parts not described can be realized by adopting or referring to the existing technologies.

[0041] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A dynamic sealing compression nut for a solenoid valve, characterized in that, It includes a compression cap body, in which a partition member and a dynamic balance member are provided. The partition member divides the interior of the compression cap into an ambient ventilation cavity and an internal sealing cavity. The ambient ventilation cavity is communicated with the external environment through a ventilation hole opened on the compression cap, and the internal sealing cavity is directly communicated with the working space of the solenoid valve. The dynamic balance member is arranged in the ambient ventilation cavity and connected to the partition member. The internal air pressure of the solenoid valve acting on the partition member can cause the dynamic balance member to drive the partition member to move, so that the ventilation hole is communicated with the internal sealing cavity. After the internal pressure of the solenoid valve decreases, the dynamic balance member drives the partition member to move in the reverse direction, so that the partition member returns to its initial position, and the communication between the ventilation hole and the internal sealing cavity is disconnected to ensure the internal sealing of the solenoid valve.

2. The dynamic sealing compression cap for a solenoid valve according to claim 1, characterized in that, The partition member is a sealing gasket, and the diameter of the sealing gasket is larger than the inner diameter of the compression cap.

3. The dynamic sealing compression nut for solenoid valve according to claim 1, characterized in that The dynamic balance member is a spring, one end of which is connected to the center of the partition member and the other end is connected to the inner wall of the compression cap body.

4. The dynamic sealing compression nut for solenoid valve according to claim 1, wherein The ventilation hole is arranged on the side wall of the compression cap body.

5. The dynamic sealing compression nut for solenoid valve according to claim 4, characterized in that, At least two ventilation holes are provided and are located at the same height of the compression cap body.

6. The dynamic sealing compression nut for solenoid valve according to claim 1, wherein An internal thread section is provided inside the compression cap body, corresponding to the external thread of the solenoid valve connection part, to realize the connection between the compression cap body and the solenoid valve.

7. The dynamic seal gland for solenoid valve according to claim 6, characterized in that, An exhaust hole section is provided above the internal thread section, and the diameter of the exhaust hole section is smaller than the inner diameter of the internal thread section and equal to or smaller than the diameter of the partition member.

8. The dynamic seal gland for solenoid valve according to claim 7, wherein The internal thread section and the exhaust hole section are integrally formed and are detachably connected to the compression cap body.

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