Isolation protection electromagnetic valve

Abstract

The invention relates to the technical field of fluid equipment, and particularly discloses an isolation protection electromagnetic valve which comprises a valve body, an isolation assembly is arranged on the valve body, and the isolation assembly comprises a shell provided with a first shell and a second shell; the conduction part is arranged in the first shell; the membrane is arranged on the conduction part, a first channel is formed in the first shell, the conduction part is arranged in the first channel, a notch for fluid to pass through is formed in the conduction part, a mounting part is arranged on the conduction part, the membrane is arranged on the mounting part, a transition channel is formed in the shell, a corner convex part is arranged at the joint of the first channel and the transition channel, and the membrane abuts against the corner convex part in a sealed mode. According to the electromagnetic valve, the interior and the exterior of the valve body can be isolated by installing the isolation assembly, harmful gas, water, dust and impurities in air or the environment are prevented from entering the valve body, meanwhile, fluid flowing out of the valve body can be prevented from flowing back to the valve body, it is ensured that the electromagnetic valve can work stably and reliably, and the effects of harmful gas prevention, dust prevention, water prevention and backflow prevention are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid equipment, in particular to an isolated protection electromagnetic valve. BACKGROUND

[0002] In fluid equipment, such as pumps, valves, liquid pipelines and gas pipelines, it is often necessary to achieve one-way flow and isolation from the outside to avoid backflow of fluid and prevent dust, water and waste gas.

[0003] In the prior art, the exhaust port or breathing port of the electromagnetic valve adopts a filtering isolation component. This isolation method cannot completely isolate harmful gases, moisture, dust and impurities in the environment, and still has a fatal impact on the performance of the electromagnetic valve, and cannot achieve good anti-backflow effect. Therefore, we propose an isolated protection electromagnetic valve. SUMMARY

[0004] The purpose of the present application is to provide an isolated protection electromagnetic valve to solve the problems of not being able to completely isolate harmful gases, moisture, dust and impurities in the environment and having a fatal impact on the performance of the electromagnetic valve, and not being able to achieve good anti-backflow effect.

[0005] To achieve the above purpose, the present application provides the following technical solution: an isolated protection electromagnetic valve, comprising a valve body, the valve body is provided with an air inlet, an exhaust hole or a breathing port, the exhaust port or the breathing port is provided with an isolation assembly, the isolation assembly comprises: a housing, the housing is provided with a first housing and a second housing in the axial direction, the diameter of the first housing is greater than the diameter of the second housing; a conducting part is provided in the first housing; a diaphragm is provided on the conducting part, wherein, The first housing is provided with a first channel, the second housing is provided with a second channel, the conducting part is provided in the first channel, the conducting part is provided with at least one gap for fluid to pass through in the circumferential direction of the conducting part, the end face of the conducting part facing the inside of the first channel is provided with a mounting part, the diaphragm is provided on the mounting part, The first channel and the second channel are provided with a transition channel, the transition channel is provided with a corner convex part at the connection between the first channel and the transition channel, the diaphragm is in sealing abutment with the corner convex part, fluid enters the transition channel through the second channel and exerts pressure to make the diaphragm deform, forming a temporary channel between the diaphragm and the corner convex part, fluid can enter the first channel through the temporary channel and flow out from the first channel through the gap in the conducting part.

[0006] In an embodiment of the present application, the mounting part is provided with a mounting groove, the diaphragm is sleeved in the mounting groove and is in sealing abutment with the mounting groove.

[0007] In an embodiment of the present application, the diaphragm is made of rubber, which can be any one of NBR, HNBR, VMQ, FVMQ, FKM, FFKM, CR, and EPDM.

[0008] In an embodiment of the present application, at least one notch is arranged on the through portion in the circumferential direction, which can be in the form of arc, semicircle, square, or a combination of one or more of the above.

[0009] In an embodiment of the present application, the cross-sectional area of the notch accounts for 30% to 70% of the cross-sectional area of the first channel.

[0010] In an embodiment of the present application, the outer circumferential surface of the second housing is provided with external threads for sealingly connecting with the outlet of the fluid supply component.

[0011] In an embodiment of the present application, the outer circumferential surface of the first housing is polygonal for sealingly connecting with the inlet of the fluid transmission component.

[0012] In an embodiment of the present application, the cross-sectional area of the second channel accounts for 25% to 75% of the cross-sectional area of the first channel.

[0013] The present application has at least the following advantages: the isolation assembly can isolate the inside of the valve body from the outside, prevent harmful gases, moisture, dust, and impurities in the air or environment from entering the valve body, and affect the performance of the valve body, and prevent the outflow from the valve body from flowing back into the valve body, ensuring that the solenoid valve can work stably and reliably, and achieving the effects of preventing harmful gases, dust, water, and backflow. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structure diagram of the isolation protection solenoid valve is provided in the present application; Figure 2 A structure diagram of the isolation assembly in the isolation protection solenoid valve is provided in the present application; Figure 3 A sectional view of the isolation assembly in the isolation protection solenoid valve is provided in the present application; Figure 4 A sectional view of the isolation assembly in the isolation protection solenoid valve of an embodiment of the present application is provided; Figure 5 A structure diagram of the isolation protection solenoid valve of another embodiment of the present application is provided; Figure 6 A structure diagram of the isolation assembly in the isolation protection solenoid valve of another embodiment of the present application is provided.

[0015] In the figure: 00, isolation protection solenoid valve; 01, valve body; 02, outlet; 03, isolation assembly; 1, shell; 10, first shell; 100, first channel; 101, transition channel; 102, corner protrusion; 11, second shell; 110, second channel; 12, conducting part; 120, notch; 121, mounting part; 122, mounting groove; 13, diaphragm. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0017] Please refer to Figures 1 to 6 As shown in the figure, the present application provides an isolation protection solenoid valve 00, which comprises a valve body 01, one side of the valve body 01 is provided with an inlet (not shown in the figure), the other side of the valve body 01 is provided with an outlet 02, the inlet and / or the outlet 02 is provided with an isolation assembly 03, the isolation assembly 03 comprises a shell 1, the shell 1 is provided with a first shell 10 and a second shell 11 along the axial direction A, the diameter of the first shell 10 is greater than the diameter of the second shell 11; a conducting part 12 is arranged in the first shell 10; a diaphragm 13 is arranged on the conducting part 12.

[0018] That is, the isolation protection solenoid valve is mainly composed of a valve body 01 and an isolation assembly 03, wherein the isolation assembly 03 is mainly composed of a shell 1, a conducting part 12 and a diaphragm 13, the isolation assembly 03 can be installed at the inlet of the valve body 01, or can be installed at the outlet 02 of the valve body 01, or the isolation assembly 03 can be installed at both the inlet and the outlet 02 of the valve body 01. By installing the isolation assembly 03, the isolation between the inside and the outside of the valve body can be realized, so as to avoid the entry of air or harmful gas, moisture, dust and impurities in the environment into the valve body, which affects the performance of the valve body. At the same time, it can also prevent the backflow of the fluid in the valve body to the valve body, so as to ensure that the solenoid valve can work stably and reliably, and achieve the effect of dustproof, waterproof and backflow prevention.

[0019] The first shell 10 is provided with a first channel 100, the second shell 11 is provided with a second channel 110, the conducting part 12 is arranged in the first channel 100, and at least one notch 120 for fluid passing through is arranged on the conducting part 12 along the circumferential direction T of the conducting part 12. The conducting part 12 is provided with a mounting part 121 on the end face facing the inside of the first channel, and the diaphragm 13 is arranged on the mounting part 121.

[0020] The first channel 100 and the second channel 110 are provided with a transition channel 101, the connection between the first channel 100 and the transition channel 101 is provided with a corner protrusion 102, the diaphragm 13 is sealed and abuts against the corner protrusion 102, and fluid enters the transition channel 101 through the second channel 110 and is pressed to make the diaphragm 13 deform, thereby forming a temporary channel between the diaphragm 13 and the corner protrusion 102, and the fluid can enter the first channel 100 through the temporary channel and flow out of the first channel 100 through the notch 120 on the through-connection part 12.

[0021] Referring to FIGS. 1 and 2, Figure 5 and Figure 6 In another embodiment of the present application, the valve body 01 and the housing 1 of the isolation assembly 03 can be the same component or integrally formed, that is, the first channel 100, the second channel 110 and the transition channel 101 are directly machined on the valve body 01, and the through-connection part 12 is fixedly installed by interference fit with the inner wall of the first channel 100. By such arrangement, the housing structure can be saved, the material is saved, the component structure is simplified, and the light weight is achieved.

[0022] Referring to FIGS. 1 and 2, Figure 4 In an embodiment of the present application, the first channel 100, the second channel 110 and the transition channel 101 are directly machined on the housing 1, wherein the second channel 110 and the transition channel 101 can be the same channel, the structure is simplified and the size is miniaturized, the material is saved, the component structure is simplified, and the light weight is achieved. The sizes of the first housing 10 and the second housing 11 can also be close, and the threads for connecting the housing 1 and the valve body are machined on the second housing 11, thereby facilitating disassembly and assembly of the housing 1.

[0023] In an embodiment of the present application, the mounting part 121 is provided with a mounting groove 122, the diaphragm 13 is sleeved in the mounting groove 122 and sealedly abuts against the mounting groove 122.

[0024] In an embodiment of the present application, the diaphragm 13 is made of rubber material, which can be any one of NBR, HNBR, VMQ, FVMQ, FKM, FFKM, CR and EPDM.

[0025] In an embodiment of the present application, along the circumferential direction of the through-connection part 12, the through-connection part 12 is provided with four notches (at least one notch) 120, and the notch is arc-shaped. In other embodiments, the notch can be arc-shaped, semicircular, square or a combination of one or more geometric shapes.

[0026] In an embodiment of the present application, the cross-sectional area of the gap 120 is 30% to 70% of the cross-sectional area of the first channel 100. By limiting the ratio between the cross-sectional area of the gap 120 and the cross-sectional area of the first channel 100, it is ensured that the fluid can be efficiently discharged from the gap 120 through the first channel 100, avoiding the outlet of the first channel 100 being blocked by the through portion 12.

[0027] In an embodiment of the present application, the outer circumferential surface of the second housing 11 is provided with external threads for sealingly connecting with the outlet of the fluid supply component.

[0028] In an embodiment of the present application, the outer circumferential surface of the first housing 10 is polygonal for sealingly connecting with the inlet of the fluid transmission component.

[0029] In an embodiment of the present application, the cross-sectional area of the second channel 110 is 25% to 75% of the cross-sectional area of the first channel 100. By limiting the size of the cross-sectional area of the second channel 110 and the cross-sectional area of the first channel 100, it is ensured that there is a size difference between the first channel 100 and the second channel 110 for leaving the corner protrusion 102 therebetween, so that the diaphragm 13 sealingly abuts against the corner protrusion 102. After the fluid enters the transition channel 101 through the second channel 110, the diaphragm 13 is deformed by the pressure of the fluid, forming a temporary channel between the diaphragm 13 and the corner protrusion 102. The fluid can enter the first channel 100 through the temporary channel and flow out of the first channel 100 through the gap 120 on the through portion 12.

[0030] It is to be noted that the relative terms such as first and second, etc. are used herein only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a list of elements does not include only those elements, but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements, and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An isolation and protection solenoid valve, comprising a valve body, wherein the valve body is provided with an air inlet, an exhaust port or a breathing port, and is characterized in that: The exhaust port or breathing port is provided with an isolation component, and the isolation component comprises: A housing, comprising a first housing and a second housing along an axial direction, wherein a diameter of the first housing is larger than a diameter of the second housing; The conducting portion is provided in the first shell, The diaphragm is provided on the conductive portion, wherein A first channel is provided in the first shell, a second channel is provided in the second shell, the conducting portion is provided in the first channel, and at least one notch is provided on the conducting portion along the circumference of the conducting portion for fluid to pass through. A mounting portion is provided on the end surface of the conducting portion facing the inner side of the first channel, and the diaphragm is provided on the mounting portion. A transition channel is provided between the first channel and the second channel, and a corner protrusion is provided at the connection between the first channel and the transition channel. The diaphragm is sealed and abutted against the corner protrusion. After the fluid enters the transition channel through the second channel, pressure is applied to cause the diaphragm to deform, forming a temporary channel between the diaphragm and the corner protrusion. The fluid can enter the first channel through the temporary channel and flow out of the first channel through the notch on the conducting portion.

2. The isolation protection solenoid valve according to claim 1, characterized in that: The mounting portion is provided with a mounting groove, and the diaphragm is sleeved in the mounting groove and is in sealing contact with the mounting groove.

3. The isolation protection solenoid valve according to claim 1, characterized in that: The diaphragm is made of rubber and can be any one of NBR, HNBR, VMQ, FVMQ, FKM, FFKM, CR, and EPDM.

4. The isolation protection solenoid valve according to claim 1, characterized in that: At least one notch is provided on the conducting portion along the circumference of the conducting portion. The notch may be in an arc shape, a semicircular shape, a square shape, or a combination of the above.

5. The isolation protection solenoid valve according to claim 1, characterized in that: The cross-sectional area of ​​the notch accounts for 30% to 70% of the cross-sectional area of ​​the first channel.

6. The isolation protection solenoid valve according to claim 1, characterized in that: An outer peripheral surface of the second shell is provided with an external thread for sealingly connecting with an outlet of a fluid supply component.

7. The isolation protection solenoid valve according to claim 1, characterized in that: The outer peripheral surface of the first shell is polygonal and is used for sealing connection with the inlet of the fluid transmission component.

8. The isolation protection solenoid valve according to claim 1, characterized in that: The cross-sectional area of ​​the second channel accounts for 25% to 75% of the cross-sectional area of ​​the first channel.

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