Novel electromagnetic valve

Abstract

The utility model relates to a novel electromagnetic valve which comprises a valve body, a valve cover and a plug, the valve cover is installed on the valve body, the plug is installed on the upper section of the valve cover, an air inlet pipe and an air outlet pipe are arranged on the valve body, an execution assembly and a coil assembly are installed in the valve cover, and an exhaust channel is formed in the valve cover. The execution assembly comprises an upper valve plate, a lower valve plate, a core seat, a valve rod and a spring, the lower end of the spring is installed on the valve body, the upper end of the spring is installed on the lower end face of the core seat, the core seat is provided with a core inner channel, a core outer channel and a core exhaust channel which are communicated with the air inlet pipe, and the core inner channel is divided into a lower core inner channel, a middle core inner channel and an upper core inner channel; the core seat is provided with a core seat communicating hole, the core outer channel is communicated with the middle core inner channel through the core seat communicating hole, the core exhaust channel is arranged on the upper core inner channel and communicated with the upper core inner channel, the exhaust channel is communicated with the core exhaust channel, and the air outlet pipe is communicated with the core outer channel. The electromagnetic valve achieves quick response and high sealing performance.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic valves, in particular to a novel electromagnetic valve. Background Art

[0002] With the continuous improvement of industrial automation, solenoid valves, as key actuators in fluid control systems, are widely used in pneumatic equipment, automated production lines, medical devices, energy management, and other fields. Traditional solenoid valves typically adopt direct-acting or pilot-operated structures, using a solenoid coil to drive the valve core to achieve the functions of opening, closing, or reversing the air circuit. However, existing technologies still have the following shortcomings in practical applications:

[0003] When a traditional solenoid valve resets its actuator, residual gas must be discharged through a narrow channel inside the valve body, resulting in poor exhaust and delayed response. This can easily cause system pressure fluctuations, especially in high-frequency opening and closing scenarios, affecting control accuracy.

[0004] If the heat generated by the electromagnetic coil during high-frequency operation cannot be dissipated in time, it may cause the coil to overheat and reduce efficiency; at the same time, condensed water caused by the temperature difference during the exhaust process is likely to accumulate inside the valve body, corroding metal parts or freezing the valve core, shortening its service life.

[0005] In view of the above-mentioned defects, the present invention proposes improvements. Utility Model Content

[0006] The utility model provides a new type of electromagnetic valve with compact structure, efficient exhaust, reliable sealing and strong adaptability, which solves the above problems existing in the use process of the prior art.

[0007] The technical solution of the present utility model is achieved as follows:

[0008] A new type of solenoid valve, including a valve body, a valve cover and a plug, the valve cover is installed on the valve body, the plug is installed on the upper part of the valve cover, the valve body is provided with an air inlet pipe and an air outlet pipe, the valve cover is provided with an actuator and a coil assembly for driving the actuator, characterized in that an exhaust channel is formed in the valve cover, the actuator includes an upper valve plate, a lower valve plate, a core seat, a valve stem and a spring, the lower end of the spring is installed on the valve body, and the upper end is installed on the lower end surface of the core seat, the core seat has a core inner channel connected to the air inlet pipe and a core outer channel And the core exhaust channel, the core inner channel is divided into the lower core inner channel, the middle core inner channel and the upper core inner channel, the upper valve plate is installed on the upper core inner channel and connected to the upper end of the valve stem, the lower valve plate is installed on the lower core inner channel and connected to the lower end of the valve stem, the middle part of the valve stem moves in the middle core inner channel, the core seat is provided with a core seat connecting hole, the core outer channel is connected with the middle core inner channel through the core seat connecting hole, the core exhaust channel is arranged on the upper core inner channel and communicates with each other, the exhaust channel is connected with the core exhaust channel, and the air outlet pipe is connected with the core outer channel.

[0009] Through the above solution, by independently setting up an exhaust channel in the valve cover and directly connecting it with the core exhaust channel, a quick exhaust path is formed, so that the residual gas can be quickly discharged when the actuator is reset, avoiding pressure retention and significantly shortening the opening and closing time. It is especially suitable for high-frequency switching conditions.

[0010] Preferably, a sealing gasket is processed on the end surface of the valve body, and a plurality of exhaust holes are opened on the end surface of the valve cover facing the valve body, and the upper end of the sealing gasket is located at the upper edge of the exhaust holes.

[0011] The above solution demonstrates that a sealing gasket is installed on the valve body end face, which closely mates with the upper edge of the valve cover exhaust hole, forming a double sealing barrier that effectively prevents gas leakage and the intrusion of external impurities. An additional sealing ring is added between the core seat and the valve body to further isolate the inlet and exhaust channels, preventing gas cross-contamination and ensuring stable pressure within the valve body.

[0012] Preferably, the valve cover has four side surfaces, and each side surface facing the end surface of the valve body is provided with the above-mentioned exhaust through hole.

[0013] From the above scheme, it can be seen that exhaust holes are opened on all four sides of the valve cover, so that the exhaust direction can be flexibly adjusted according to actual installation requirements and adapt to different space layouts. At the same time, the exhaust airflow is dispersed to reduce local airflow impact and noise.

[0014] Preferably, an upper through hole is formed in the upper section of the valve cover, a steel ball is embedded in the upper through hole, and the upper through hole is communicated with the exhaust channel.

[0015] From the above scheme, it can be seen that the upper part of the valve cover is provided with an upper through hole and a steel ball structure connected to the exhaust channel to form a micro-pressure balance channel, which not only assists in heat dissipation, but also reduces the accumulation of condensed water through air circulation, preventing the valve core from getting stuck or the coil from overheating.

[0016] Preferably, a sealing ring is installed between the core seat and the valve body.

[0017] In summary, the beneficial effects of the present invention are:

[0018] The utility model discloses a new type of solenoid valve: the solenoid valve achieves the comprehensive advantages of fast response, high sealing, low energy consumption and long life through exhaust path optimization, seal reinforcement and structural adaptability improvement. It can be widely used in industrial automation scenarios with strict requirements on reliability and efficiency. Moreover, the modularly designed actuator components (upper / lower valve plates, core seat, valve stem and spring) can be disassembled and assembled as a whole, and combined with the exhaust through hole, it is convenient for quick maintenance and cleaning of impurities, thereby reducing downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 Schematic diagram of a new type of solenoid valve in this embodiment.

[0021] Figure 2 It is a plan schematic diagram of a new type of solenoid valve.

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the AA direction.

[0023] Figure 4 It is a plan schematic diagram of a new type of solenoid valve.

[0024] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure in the middle BB direction.

[0025] Figure 6 Schematic diagram of the core seat.

[0026] Figure 7 This is a plan view of a sub-seat.

[0027] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure in the CC direction. DETAILED DESCRIPTION

[0028] The following is a combination of the appended examples of the present invention Figure 1-8 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] Example

[0030] like Figures 1 to 8 As shown, this embodiment discloses a solenoid valve with an independent quick exhaust channel, which mainly includes the following main structure:

[0031] The solenoid valve is mainly composed of a valve body 1 , a valve cover 2 and a plug 3 .

[0032] The valve cover 2 is fixedly mounted on the upper end surface of the valve body 1 .

[0033] The plug 3 is installed on the upper section of the valve cover 2 and is used to connect external power supply and control signals.

[0034] The fluid channel:

[0035] The valve body 1 is processed with an air inlet pipe P and an air outlet pipe A, which are respectively used to connect the air source and the actuator (such as a cylinder).

[0036] The valve cover and exhaust system:

[0037] An exhaust passage R is independently formed inside the valve cover 2 .

[0038] The four side surfaces of the lower end surface (facing the valve body end surface) of the valve cover 2 are all provided with exhaust holes 21. These exhaust holes 21 are all communicated with the exhaust channel R inside the valve cover.

[0039] The upper section of the valve cover 2 has an upper through hole 22, which communicates with the exhaust passage R. A steel ball 4 is embedded in the upper through hole 22. Under normal circumstances, the steel ball 4 closes the upper through hole 22 by gravity or micro-pressure. However, if the internal pressure rises abnormally, it can be pushed open, forming a micro-pressure balance and emergency exhaust passage.

[0040] The execution components are:

[0041] The actuator and the coil assembly 5 driving it are both installed inside the valve cover 2 .

[0042] The execution components include:

[0043] Core seat 6: located between the valve body 1 and the valve cover 2, it is the core component of the gas flow channel.

[0044] Valve stem 7: penetrates the core seat 6.

[0045] Upper valve plate 8: fixedly connected to the upper end of the valve stem 7.

[0046] Lower valve plate 9: fixedly connected to the lower end of the valve stem 7.

[0047] Spring 10: Its lower end is supported on the valve body 1, and its upper end is against the lower end surface of the core seat 6, providing a downward reset force for the valve stem 7.

[0048] The flow channel design of core seat 6:

[0049] The core inner channel runs through the center of the core seat 6 and is divided from bottom to top into a lower core inner channel 61, a middle core inner channel 62 and an upper core inner channel 63. The middle part of the valve stem 7 moves in the middle core inner channel 62.

[0050] The core outer channel 64 is arranged around the core inner channel.

[0051] The core exhaust channel 65 is provided in the region of the upper core inner channel 63 and is directly connected to the upper core inner channel 63 .

[0052] The core seat 6 is provided with a core seat communicating hole 66 , which allows the core outer passage 64 to communicate with the core inner passage 62 .

[0053] The air inlet pipe P is communicated with the inlet of the lower core inner channel 61 .

[0054] The air outlet pipe A is communicated with the core outer passage 64 .

[0055] The exhaust passage R of the valve cover is directly connected to the core exhaust passage 65 through the space (or specific interface) above the core seat 6.

[0056] The sealing design:

[0057] Sealing gasket 11: Attached to the upper surface of valve body 1 (where it meets the valve cover). The upper edge of sealing gasket 11 is designed to rest above the lower edge of exhaust hole 21 on valve cover 2 (i.e., the upper end of the sealing gasket is higher than or flush with the lower edge of the exhaust hole). This way, when valve cover 2 is pressed against valve body 1, sealing gasket 11 effectively covers and seals the gap where exhaust hole 21 meets valve body 1.

[0058] Sealing ring 12: installed on the contact surface between the core seat 6 and the valve body 1, used to strictly isolate the air intake channel (lower core inner channel 61) and the exhaust channel (core exhaust channel 65 / exhaust channel R) to prevent gas cross-flow.

[0059] Working principle:

[0060] 1. Power-off state initial / reset state:

[0061] The coil assembly 5 is de-energized, and the elastic force of the spring 10 pushes the core seat 6 and the valve stem 7 downward.

[0062] The lower valve plate 9 is separated from its valve seat, opening the passage between the lower core inner channel 61 and the middle core inner channel 62.

[0063] The upper valve plate 8 is pressed against its valve seat, closing the passage 63 in the upper core.

[0064] at this time:

[0065] The gas on the actuator (cylinder) side flows back through the outlet pipe A, enters the core outer channel 64, passes through the core seat connecting hole 66, enters the middle core inner channel 62, and then flows upward into the upper core inner channel 63.

[0066] Since the upper valve plate 8 is closed, the gas cannot continue to flow upward, but the core exhaust channel 65 is connected to the upper core inner channel 63 and is in an open state.

[0067] Therefore, the reflux gas quickly passes through the core exhaust channel 65 -> enters the valve cover exhaust channel R -> and finally is directly and quickly discharged to the atmosphere through the exhaust through-hole 21 on the side of the valve cover 2.

[0068] At the same time, the air inlet pipe P is connected to the lower core inner channel 61, but is blocked from flowing to the actuator by the lower side of the lower valve plate 9 (or the valve body structure).

[0069] 2. Power-on state and working state:

[0070] The coil assembly 5 is energized to generate electromagnetic force, which overcomes the elastic force of the spring 10 and attracts the core seat 6 and the valve stem 7 to move upward.

[0071] The lower valve plate 9 is pressed against its valve seat, closing the passage between the lower core inner channel 61 and the middle core inner channel 62.

[0072] The upper valve plate 8 is separated from its valve seat, opening the passage 63 in the upper core.

[0073] at this time:

[0074] The source gas enters from the air inlet pipe P->the lower core inner channel 61->because the lower valve plate 9 is closed, the gas enters the core outer channel 64 through the internal flow channel (or bypass) of the core seat->flows to the air outlet pipe A->supplying the actuator (cylinder).

[0075] Although the core exhaust channel 65 is still connected to the upper core internal channel 63, the channel is effectively closed or isolated because the upper valve plate 8 is opened and moved upward, and no longer forms an effective passage with the exhaust channel R, preventing gas from leaking from the exhaust port.

[0076] The steel ball 4 closes the upper through hole 22 under normal pressure.

[0077] The core advantage of the solenoid valve described in this embodiment lies in its independent and efficient rapid exhaust system:

[0078] At the moment the solenoid valve is de-energized and reset, residual gas in the actuator (cylinder) cavity is directly and rapidly exhausted to the atmosphere (via side exhaust holes 21) through the specially designed core exhaust passage 65 and valve cover exhaust passage R. This path has minimal resistance, avoiding pressure retention and backpressure formation, significantly shortening the valve closing (resetting) time, making it particularly suitable for applications requiring high-frequency, rapid switching.

[0079] The cooperation between the sealing gasket 11 and the upper edge of the exhaust hole 21 of the valve cover forms a first barrier to prevent the intrusion of external impurities and the leakage of gas.

[0080] The sealing ring 12 establishes a key isolation between the core seat 6 and the valve body 1, completely eliminating the risk of cross-flow between the intake P and exhaust R channels, ensuring stable pressure in the valve and reliable operation.

[0081] The valve cover 2 is provided with exhaust holes 21 on all four sides, allowing the exhaust direction to be flexibly selected according to the installation space and direction requirements. The multi-hole exhaust also disperses the airflow, effectively reducing the exhaust noise and local airflow impact.

[0082] The steel ball 4 and the upper through hole 22 form a micro-pressure balance structure. When a slight positive pressure or temperature fluctuation occurs inside the valve, the steel ball is pushed open to allow a small amount of air to be exhausted or inhaled. This helps to dissipate heat, promotes microcirculation of air within the valve, and reduces condensation accumulation. This prevents the valve core (stem / disc) from rust or water stains and reduces the risk of overheating of the coil assembly 5, thereby improving the long-term reliability and life of the valve.

[0083] The quick exhaust passage R,65 is integrated into the valve cover 2 and the core seat 6, which has a compact structure and does not require an additional quick exhaust valve, thus simplifying the system piping.

[0084] The solenoid valve of this embodiment directly connects the built-in exhaust channel R of the valve cover and the multi-directional exhaust holes 21 through an innovative core seat flow channel design (especially the core exhaust channel 65), combined with precise dynamic sealing (sealing gasket 11, sealing ring 12) and micro-pressure balance structure (steel ball 4), to achieve nearly zero-resistance rapid discharge of residual gas, greatly improving the response speed, reliability, environmental adaptability (noise reduction, anti-condensation) and service life, and is particularly suitable for automation control systems with stringent requirements on switching speed and frequency.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of solenoid valve, comprising a valve body, a valve cover, and a plug, wherein the valve cover is mounted on the valve body, and the plug is mounted on the upper portion of the valve cover. The valve body is provided with an air inlet pipe and an air outlet pipe, and an actuator and a coil assembly for driving the actuator are mounted within the valve cover. The valve body is characterized by: An exhaust channel is formed in the valve cover. The actuator includes an upper valve plate, a lower valve plate, a core seat, a valve stem and a spring. The lower end of the spring is mounted on the valve body, and the upper end is mounted on the lower end surface of the core seat. The core seat has a core inner channel, a core outer channel and a core exhaust channel connected to the air inlet pipe. The core inner channel is divided into a lower core inner channel, a middle core inner channel and an upper core inner channel. The upper valve plate is mounted on the upper core inner channel and connected to the upper end of the valve stem. The lower valve plate is mounted on the lower core inner channel and connected to the lower end of the valve stem. The middle part of the valve stem moves in the middle core inner channel. The core seat is provided with a core seat connecting hole. The core outer channel is connected with the middle core inner channel through the core seat connecting hole. The core exhaust channel is arranged on the upper core inner channel and communicates with each other. The exhaust channel is connected with the core exhaust channel, and the air outlet pipe is connected with the core outer channel.

2. A new type of solenoid valve according to claim 1, characterized in that: A sealing gasket is processed on the end surface of the valve body, and a plurality of exhaust holes are opened on the valve cover facing the end surface of the valve body, and the upper end of the sealing gasket is located at the upper edge of the exhaust hole.

3. A new type of solenoid valve according to claim 2, characterized in that: The valve cover has four side surfaces, and each side surface facing the end surface of the valve body is provided with the above-mentioned exhaust through hole.

4. A new type of solenoid valve according to claim 1, 2 or 3, characterized in that: An upper through hole is formed on the upper section of the valve cover, a steel ball is embedded in the upper through hole, and the upper through hole is communicated with the exhaust channel.

5. A novel solenoid valve according to claim 1, characterized in that: A sealing ring is installed between the core seat and the valve body.

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