Silent electromagnetic valve

Abstract

The utility model discloses a mute type electromagnetic valve which comprises an electromagnetic support, an electromagnetic valve body and an electromagnetic valve body. The protective shell is arranged between the electromagnetic bracket and the end cover; the coil assembly is arranged in the protective shell; the fixed iron core is fixedly arranged on the end cover and is embedded into the movable cavity; the movable iron core and the fixed iron core are coaxially arranged in the movable cavity; and the sealing buffer structure is arranged on the fixed iron core. Through the arrangement of the sealing buffer structure, when the movable iron core moves towards the fixed iron core and is close to the fixed iron core, the movable iron core is pressed and contacted through the sealing buffer structure, so that the fixed iron core and the movable iron core are prevented from being directly contacted and collided, and the collision contact area when the movable iron core and the fixed iron core are closed is reduced; through the arrangement of the movable iron core and the fixed iron core, the impact noise generated when the movable iron core and the fixed iron core are closed can be effectively reduced, the noise is greatly reduced, meanwhile, through the arrangement of the protection shell, the noise is further prevented from spreading outwards while internal components are protected, and the noise is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve technical field, especially a mute solenoid valve. BACKGROUND

[0002] Solenoid valve is the industrial equipment of electromagnetic control, is used to control fluid medium's automation basic element, main working principle is to utilize the magnetization of coil electrification, makes dynamic iron core and static iron core attraction, thereby realizes the adjustment control to medium's direction, flow, speed etc.

[0003] But the existing solenoid valve, the fixed iron core and the dynamic iron core between no buffer setting, thus in dynamic iron core and static iron core attraction, because the speed is fast, and the impact force is big, lead to in attraction because of the impact will produce the big noise, causes the noise pollution, urgently needs to carry out the improvement. SUMMARY

[0004] In order to overcome the insufficient of prior art, the utility model provides a mute solenoid valve.

[0005] The utility model solves technical scheme that its technical problem adopts:

[0006] A mute solenoid valve, it includes:

[0007] Electromagnetic support, its upper end is connected with end cover;

[0008] Protective shell, be located between the electromagnetic support with the end cover;

[0009] Coil assembly, be located in the protective shell, its upper is provided with movable cavity;

[0010] Fixed iron core, fixedly be located on the end cover and embedded in movable cavity;

[0011] Dynamic iron core, with the fixed iron core coaxial be located in movable cavity, and can along movable cavity moves close or far from fixed iron core;

[0012] Sealing buffer structure, be located on the fixed iron core, wherein, when dynamic iron core moves close to close the fixed iron core, sealing buffer structure and dynamic iron core top pressure contact, to avoid the fixed iron core and dynamic iron core direct contact impact.

[0013] A mute solenoid valve as above, the sealing buffer structure includes the sealing ring groove of setting on the fixed iron core, the sealing ring of embedding in this sealing ring groove, the sealing ring outside wall still is equipped with the connection thin wall extending towards dynamic iron core direction and the mute buffer ring of being equipped with on the connection thin wall far from the sealing ring one end.

[0014] The mute buffer ring is annular stepped structure, one end of which is embedded on the fixed iron core and the other end is used for contact with the dynamic iron core.

[0015] The sealing ring, the connecting thin wall and the mute buffer ring are integrally designed.

[0016] The movable cavity and the fixed iron core and the dynamic iron core are further provided with a magnetic guide sleeve set.

[0017] The magnetic guide sleeve set comprises a first magnetic guide sleeve sleeved in the movable cavity and a second magnetic guide sleeve sleeved at the lower end of the first magnetic guide sleeve, and the lower end of the second magnetic guide sleeve further extends outward and is provided with a limiting part capable of pressing the lower end of the coil assembly.

[0018] The end cover is further provided with a plurality of identification convex points.

[0019] The electromagnetic support comprises a bottom plate and side supports protruding on both sides of the bottom plate, and the end cover is connected to the upper ends of the two side supports.

[0020] The lower end of the dynamic iron core is further connected with a rubber pad, and a spring is sleeved on the dynamic iron core and is pressed between the rubber pad and the electromagnetic support.

[0021] The end cover is further provided with a mounting groove, and the fixed iron core is further provided with a mounting convex column capable of being embedded in the mounting groove.

[0022] The application has the advantages of simple structure, the sealing buffer structure is provided, when the dynamic iron core moves to the fixed iron core and closes, the sealing buffer structure is in contact with the dynamic iron core, so that the fixed iron core and the dynamic iron core are not directly contacted and impacted, the impact contact area of the dynamic iron core and the fixed iron core is reduced when the dynamic iron core and the fixed iron core are closed, the impact noise generated when the dynamic iron core and the fixed iron core are closed can be effectively reduced, the noise generation is greatly reduced, the protective shell is further provided, the internal components are protected, the outward propagation of the noise is further hindered, the noise generation is further reduced, and the application is practical and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 is a structural schematic diagram of a mute type electromagnetic valve according to an embodiment of the present application;

[0025] Figure 2 is an exploded view of a mute type electromagnetic valve according to an embodiment of the present application;

[0026] Figure 3 is a top view of a mute type electromagnetic valve according to an embodiment of the present application;

[0027] Figure 4 is Figure 3 is a sectional view along direction A;

[0028] Figure 5 is an assembly schematic diagram of the fixed iron core and the sealing buffer structure according to an embodiment of the present application;

[0029] Figure 6 is a partial sectional view of the fixed iron core and the sealing buffer structure after assembly according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical scheme of the present application will be described in detail below with reference to the drawings and embodiments.

[0031] Please refer to Figures 1 to 6 , the present application provides a mute type electromagnetic valve, characterized in that, comprising:

[0032] The upper end of the electromagnetic support 1 is connected with an end cover 10;

[0033] The protective shell 2 is arranged between the electromagnetic support 1 and the end cover 10;

[0034] The coil assembly 3 is arranged in the protective shell 2, and the movable cavity 30 is formed in the coil assembly 3;

[0035] The fixed iron core 4 is fixedly arranged on the end cover 10 and embedded in the movable cavity 30;

[0036] The movable iron core 5 is coaxially arranged in the movable cavity 30 with the fixed iron core 4, and can move close to or away from the fixed iron core 4 along the movable cavity 30;

[0037] The sealing buffer structure 6 is arranged on the fixed iron core 4, wherein when the movable iron core 5 moves close to the fixed iron core 4 to close, the sealing buffer structure 6 is in top pressing contact with the movable iron core 5 to avoid direct contact and impact between the fixed iron core 4 and the movable iron core 5.

[0038] By the arrangement of the sealing buffer structure 6, when the moving iron core 5 moves close to the fixed iron core 4, the sealing buffer structure 6 is in contact with the moving iron core 5 to avoid the direct contact and impact between the fixed iron core 4 and the moving iron core 5, the impact contact area when the moving iron core 5 and the fixed iron core 4 are closed is reduced, the impact noise generated when the moving iron core 5 and the fixed iron core 4 are closed can be effectively reduced, the noise generation is greatly reduced, and the protective shell 2 is arranged to protect the internal components and further hinder the outward propagation of the noise, further reducing the noise generation, which is practical and convenient.

[0039] In the embodiment, the coil assembly 3 is further externally connected with a patch cord 30 at the upper end.

[0040] Further, the sealing buffer structure 6 comprises a sealing ring groove 61 arranged on the fixed iron core 4, a sealing ring 62 embedded in the sealing ring groove 61, a connecting thin wall 63 extending towards the moving iron core 5 is arranged on the outer side wall of the sealing ring 62, and a mute buffer ring 64 is arranged on the connecting thin wall 63 away from the sealing ring 62.

[0041] Specifically, the mute buffer ring 64 is in a ring stepped structure, one end of which is embedded on the fixed iron core 4, and the other end is used for being in contact with the moving iron core 5.

[0042] During assembly, the sealing ring 62 is sleeved on the fixed iron core 4 from bottom to top until it is embedded in the sealing ring groove 61, so that the mute buffer ring 64 moves to the lower end of the fixed iron core 4, and at the same time, one end of the mute buffer ring 64 is embedded on the lower end of the fixed iron core 4, so that the assembly is completed, which is practical and convenient; when the moving iron core 5 and the fixed iron core 4 are closed, the sealing state of the electromagnetic valve is realized through the sealing ring 62, and at the same time, the mute buffer ring 64 is in contact with the moving iron core 5 to avoid the direct contact and impact between the fixed iron core 4 and the moving iron core 5, the impact contact area when the moving iron core 5 and the fixed iron core 4 are closed is reduced, the impact noise generated when the moving iron core 5 and the fixed iron core 4 are closed can be effectively reduced, and the noise generation is greatly reduced.

[0043] In the embodiment, the sealing ring 62, the connecting thin wall 63 and the mute buffer ring 64 are designed in one piece, which is convenient for processing and production and assembly by production personnel.

[0044] Further, the movable cavity 30 is further provided with a magnetic guide sleeve group 7 between the fixed iron core 4 and the moving iron core 5.

[0045] Specifically, the magnetic guide sleeve group 7 comprises a first magnetic guide sleeve 71 sleeved in the movable cavity 30, and a second magnetic guide sleeve 72 sleeved at the lower end of the first magnetic guide sleeve 71, and a limiting portion 720 capable of pressing the lower end of the coil assembly 3 is arranged on the lower end of the second magnetic guide sleeve 72.

[0046] By increasing the setting of the magnetic sleeve group 7, the magnetic performance of the electromagnetic valve is improved, so that the performance requirement of the coil assembly 3 can be reduced, the amount of copper wire used is reduced, the production cost is reduced, and at the same time, the fixed iron core 4 and the moving iron core 5 can be further ensured to be on the same axis, which is practical and convenient,

[0047] Further, the end cover 10 is further provided with a plurality of identification protrusions 100.

[0048] By setting a plurality of identification protrusions 100 for marking, the surface electroplating treatment party and identification are facilitated, which is practical and convenient.

[0049] Further, the electromagnetic support 1 comprises a bottom plate 11 and side frames 12 protruding on both sides of the bottom plate 11, and the end cover 10 is connected to the upper ends of the two side frames 12 respectively.

[0050] The lower end of the moving iron core 5 is further connected with a rubber pad 81, and a spring 82 is sleeved on the moving iron core 5 and is pressed between the rubber pad 81 and the electromagnetic support 1 respectively.

[0051] The end cover 10 is further provided with a mounting groove 91, and the fixed iron core 4 is further provided with a mounting protrusion 92 which can be embedded in the mounting groove 91.

[0052] As described above, by setting the sealing buffer structure 6, when the moving iron core 5 moves close to the fixed iron core 4, the sealing buffer structure 6 is in contact with the moving iron core 5, so as to avoid direct contact and impact between the fixed iron core 4 and the moving iron core 5, thereby reducing the impact contact area when the moving iron core 5 and the fixed iron core 4 are closed, effectively reducing the impact noise generated when the moving iron core 5 and the fixed iron core 4 are closed, greatly reducing the generation of noise, and further reducing the generation of noise by setting the protective shell 2, which protects the internal components and further hinders the outward propagation of noise, thereby further reducing the generation of noise, which is practical and convenient.

[0053] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure made by using the content of the present application specification and drawings, or directly or indirectly used in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A silent solenoid valve characterized by comprising: The utility model relates to a kind of electromagnetic support (1), the upper end of which is connected with end cover (10);Protection shell (2) is arranged between the electromagnetic support (1) and the end cover (10);Coil assembly (3) is arranged in the protection shell (2), and the movable cavity (30) is opened in it;Fixed iron core (4) is fixedly arranged on the end cover (10) and embedded in the movable cavity (30);Moving iron core (5) is coaxially arranged in the movable cavity (30) with the fixed iron core (4), and can move close to or away from the fixed iron core (4) along the movable cavity (30);Sealing buffer structure (6) is arranged on the fixed iron core (4), wherein, when the moving iron core (5) moves close to the fixed iron core (4) and closes, the sealing buffer structure (6) is pressed from above with the moving iron core (5), to avoid the fixed iron core (4) and moving iron core (5) directly contact and impact. The sealing buffer structure (6) includes a sealing ring groove (61) opened on the fixed iron core (4), a sealing ring (62) embedded in the sealing ring groove (61), and a connecting thin wall (63) extending towards the moving iron core (5) on the outer side wall of the sealing ring (62), and a mute buffer ring (64) arranged on the connecting thin wall (63) away from one end of the sealing ring (62). The mute buffer ring (64) is a ring-shaped stepped structure, one end of which is embedded on the fixed iron core (4), and the other end is used for pressing contact with the moving iron core (5). The sealing ring (62), the connecting thin wall (63) and the mute buffer ring (64) are designed in one piece. The movable cavity (30) is also provided with a magnetic guide sleeve set (7) between the fixed iron core (4) and the moving iron core (5). The magnetic guide sleeve set (7) includes a first magnetic guide sleeve (71) sleeved in the movable cavity (30), and a second magnetic guide sleeve (72) sleeved at the lower end of the first magnetic guide sleeve (71), and the lower end of the second magnetic guide sleeve (72) further extends outward to provide a limiting portion (720) that can press on the lower end of the coil assembly (3). The end cover (10) is also provided with a plurality of identification protrusions (100).

2. The silent solenoid valve according to claim 1, wherein: The electromagnetic support (1) includes a bottom plate (11) and side frames (12) protruding on both sides of the bottom plate (11), and the end cover (10) is connected to the upper ends of the two side frames (12) respectively.

3. The silent solenoid valve according to claim 2, wherein: The lower end of the moving iron core (5) is also provided with a rubber pad (81), and a spring (82) is sleeved on the moving iron core (5) and pressed between the rubber pad (81) and the electromagnetic support (1) respectively.

4. The silent solenoid valve according to claim 2, wherein: The end cover (10) is also provided with a mounting groove (91), and the fixed iron core (4) is also provided with a mounting protrusion (92) that can be embedded in the mounting groove (91).

5. The silent solenoid valve according to claim 1, wherein: ​ 6. A silent solenoid valve according to claim 5, characterized in that: ​ 7. The silent solenoid valve according to claim 1, wherein: ​ 8. The silent solenoid valve according to claim 1, wherein: ​ 9. The silent solenoid valve according to claim 1, wherein: ​ 10. The silent solenoid valve according to claim 1, wherein: ​

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