High response mini solenoid valve

Abstract

The present invention discloses a high-response mini solenoid valve, which is composed of a main body and an air guide valve, wherein an air guide valve rubber is arranged inside the main body, and on both sides of the air guide valve rubber, a movable iron core that can be moved by electrifying a coil and a movable iron spring whose elastic force can be reduced to a minimum and can seal an air inlet hole are installed on one side, and an air guide valve rubber spring whose elastic force can be reduced to a minimum and can seal an exhaust hole is installed on the other side. The air guide valve rubber that has been heated, pressed and composited with a dual-material hardness can be made to perform reciprocating axial motion. Driven by the magnetic energy of the original magnetic field, the movement frequency of the air guide valve rubber is increased to a multiple, thereby achieving a high-response actuation characteristic. Moreover, since the different hardnesses of the dual materials are combined with the elastic force that can be reduced to a minimum, the wear of the original air guide valve rubber at the depression formed by the elastic force of the movable iron spring can be thoroughly improved, thereby extending the service life.

Description

Technical Field

[0001] The present invention relates to a high-response mini solenoid valve, wherein the air valve rubber arranged inside the air valve rubber is mainly made of two materials with different hardnesses through heating and pressing. By correspondingly modifying the elastic force of the air valve rubber spring and the movable iron spring to the minimum, the movement frequency of the air valve rubber can be effectively improved when the original coil is in an energized and magnetized state. Background Art

[0002] In general industrial processing equipment, solenoid valves are a common fluid flow control device. Figure 1 As shown, the detailed operation process is well known to those skilled in the art, so it will not be described in detail. Only the existing structure of the improvement of the present invention is briefly described;

[0003] Please refer to Figure 1 As shown in the figure, it can be seen that the position of the existing gas guide valve rubber (90) is set, and the left and right ends thereof have springs of corresponding different sizes, the left side is the gas guide valve rubber spring (92), and the right side is the movable iron core (912) driven by the movable iron spring (911) through the coil (91) being energized and excited; when the coil (91) is energized and excited, the springs on the left and right sides will push the conventional gas guide valve rubber (90) to move, so that the fluid flows through the air inlet (P), the working hole (A), and the exhaust hole (R), so that the electromagnetic valve can be driven for application.

[0004] The conventional air guide valve rubber (90) is usually made of the same material, so the overall hardness is the same. Since the left and right ends of the conventional air guide valve rubber (90) need to correspond to springs of different sizes, the elastic forces borne by the two ends are different. After a period of use, the two ends will have different degrees of depression, and the end that bears a larger elastic force is prone to wear.

[0005] Ultimately, the right end surface of the existing air guide valve rubber (90) corresponding to the larger elastic force will inevitably be concave. This concave portion (901) also depends on the overall hardness of the existing air guide valve rubber (90). Figure 1 The partially enlarged part in the figure shows the depressions (901) at the left and right ends for understanding their formation. In addition to causing the air inlet (P) and the exhaust hole (R) to be incompletely fitted, the depressions (901) being too deep will also affect the smoothness of the displacement movement.

[0006] Therefore, the present invention has found out through practical application and research based on the above-mentioned existing structure that it still has shortcomings that need to be improved. Summary of the invention

[0007] In view of the fact that in actual use of current solenoid valves, since the material hardness of the gas valve rubber used inside is the same and it is linked by springs of different sizes at both ends, after a period of reciprocating axial motion, a depression will appear on the surface of the existing gas valve rubber, thereby affecting the smoothness of the axial motion, and the kinetic energy of the aforementioned movable iron core is mainly achieved by the energy generated by the coil being energized and excited, and the energy stored in the movable iron spring after being compressed is called potential energy. Therefore, the present invention improves the material properties of the gas valve rubber so that the corresponding spring cooperates to reduce the elastic force, so that the original energy of the energized excitation can drive the kinetic energy of the movable iron core unchanged, but the energy stored in the spring is reduced, so that the reduction in the kinetic energy of the movable iron core becomes smaller, and the speed reduction also becomes smaller, thereby enabling the reciprocating axial motion of the gas valve rubber to respond faster. Therefore, the movable iron core of the improved solenoid valve moves faster than that of the existing solenoid valves of the same level, and can be used to increase the movement frequency of the coil to a higher range.

[0008] To achieve the above-mentioned purpose, the main purpose of the present invention is to provide a high-response mini solenoid valve, which has a body, and is internally provided with a fixed iron core, a movable iron spring and a movable iron core. After the coil also arranged inside the body is energized and magnetized, the movable iron core is attracted by the magnetic force of the fixed iron core fixed to the coaxial center and is coaxially pushed;

[0009] An air guide valve is connected to the body, and the air guide valve has an air inlet hole, a working hole, an exhaust hole, and an air guide valve rubber sleeved with an air guide valve rubber spring. The air guide valve rubber is provided with a first side surface and a second side surface at both ends, and an air guide valve rubber seat is further arranged between the air guide valve rubber and the movable iron core. The movable iron core, the movable iron spring, and the air guide valve rubber spring are respectively pressed against the first side surface and the second side surface to make the air guide valve rubber reciprocating axial movement, so that the working hole switches the air inlet hole and the exhaust hole to form different flow paths, so that the fluid can flow in accordance with the flow path;

[0010] The air guide valve rubber is formed by heating and pressing a first material and a second material, wherein the first side is formed by the first material, and the hardness of the first material can adapt to the movable iron spring and seal an air inlet hole; and the second side is formed by the second material, and the hardness of the second material can adapt to the air guide valve rubber spring and seal an exhaust hole; the air guide valve rubber spring and the movable iron spring can change the original spring length, so that the pre-stress length and the pre-stress elastic force are reduced, and the movement frequency of the air guide valve rubber (22) can be effectively improved while maintaining the original energized excitation state.

[0011] Another object of the present invention is to increase the movement frequency of the air guide valve rubber to between 125 Hz and 200 Hz.

[0012] Another purpose of the present invention is that the first material of the air guide valve rubber spring against the first side surface has become softer than the original material, and the required sealing force can be reduced, so the pre-stressing force is reduced to within 40% to 50% of the original force, and the pre-stressing force of the movable iron spring is affected by the reduction of the pre-stressing force of the air guide valve rubber spring, and its pre-stressing force can also be reduced at the same time, and the reduction range is within about 20% to 30%.

[0013] Another object of the present invention is that the air valve rubber further includes: a metal material disposed inside the air valve rubber, which can provide a stable combination of the first material and the second material and reduce the variation of the average thickness, so that the concavity of the air valve rubber is closer to uniform.

[0014] Another object of the present invention is that the hardness of the first material is between 80 degrees and 90 degrees.

[0015] Another object of the present invention is that the hardness of the second material is between 50 degrees and 70 degrees.

[0016] Another object of the present invention is that the metal material is a copper material or any material that does not have magnetic attraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of an existing air guide valve rubber;

[0018] Figure 2 Schematic diagram of the present invention; (A) schematic cross section of dual materials, (B) cross section of dual materials with additional metal material;

[0019] Figure 3 Schematic diagram of the use of the air guide valve rubber of the present invention in dual materials (I).

[0020] Figure 4 Schematic diagram (2) of the use of the air guide valve rubber of the present invention in dual materials.

[0021] Figure 5 Schematic diagram of the use of the air guide valve rubber of the present invention in double materials with additional metal material (I).

[0022] Figure 6 Schematic diagram (2) of the use of the air guide valve rubber of the present invention in double materials with additional metal material.

[0023] The reference numerals are as follows:

[0024] (10)...Ontology

[0025] (11)...Fixed core

[0026] (12)...Movable iron spring

[0027] (13)...Movable iron core

[0028] (14)...Coil

[0029] (20)...Air guide valve

[0030] (21)...Air guide valve rubber seat

[0031] (22)...Air valve rubber

[0032] (221)...First side

[0033] (2211)...First Material

[0034] (222)...side 2

[0035] (2221)...Second Material

[0036] (223)...Metal material

[0037] (23)...Air guide valve rubber spring

[0038] (P)...air intake

[0039] (A)...Working hole

[0040] (R)...Exhaust hole

[0041] (90)...Commonly used air valve rubber

[0042] (901)...Depression

[0043] (91)...Coil

[0044] (911)...Movable iron spring

[0045] (912)...Movable iron core

[0046] (92)...Air valve rubber spring. DETAILED DESCRIPTION

[0047] Generally, according to the best possible embodiment of the present invention, and with the accompanying drawings Figures 1 to 6 After the detailed description, the understanding of the present invention is enhanced. The drawings in the present invention use the fluid working pressure as positive pressure to pass through the solenoid valve, which is an embodiment for understanding. Such solenoid valves can be three-port two-position solenoid valves or mini solenoid valves, etc., and can also be used for fluid working pressures as negative pressures, but are not limited thereto.

[0048] The present invention provides a high-response mini solenoid valve, the movement frequency of which is generally limited by the combined effect of the magnetic force of the coil (14) energized and magnetized, the elastic force of the movable iron spring (12), and the elastic force of the air guide valve rubber spring (23). For ease of understanding, the movement frequency of the energized and magnetized original energy is tentatively set to be between 10 Hz and 60 Hz.

[0049] The high-response mini solenoid valve disclosed in the present invention comprises a body (10) in which a fixed iron core (11), a movable iron spring (12) and a movable iron core (13) are arranged. When a coil (14) also arranged in the body (10) is electrified and magnetized, the movable iron core (13) is attracted by the magnetic force of the fixed iron core (11) fixed at the coaxial center and is pushed coaxially.

[0050] An air guide valve (20) is connected to the main body (10). The air guide valve (20) has an air inlet hole (P), a working hole (A), an exhaust hole (R) and an air guide valve rubber (22) sleeved with an air guide valve rubber spring (23). The air guide valve rubber (22) is provided with a first side surface (221) and a second side surface (222) at both ends, and an air guide valve rubber seat (21) is further arranged between the air guide valve rubber (22) and the movable iron core (13). Through the movable iron core (13), the movable iron spring (12) and the air guide valve rubber spring (23), the air guide valve rubber seat (21) is provided. ) respectively correspond to the first side surface (221) and the second side surface (222) to push against each other, so that the air guide valve rubber (22) can move back and forth axially, allowing the working hole (A) to switch the air inlet hole (P) and the exhaust hole (R) to form different flow paths, so that the fluid can flow in accordance with the flow path; the movement steps of the air guide valve rubber (22) are equivalent to those of a general solenoid valve available on the market, so it will not be repeated. At this time, the movement frequency of the reciprocating axial movement is 10Hz to 60Hz; because the air guide valve rubber (22) is driven by the forced frequency (forced frequency) of the movable iron core (13) pushed by the coil (14) to drive it to move back and forth axially, if only a single overall hardness is used to correspond to two elastic forces respectively, the air guide valve rubber (22) will be damaged to a certain extent.

[0051] As mentioned above, the air guide valve rubber (22) in the present invention is composed of a first material (2211) and a second material (2221) which are compounded by heating and pressing. The first side surface is formed by the first material (2211) having a hardness of 80 to 90 degrees, and the hardness of the first material (2211) can adapt to the movable iron spring (12) and seal an air inlet (P); and the second side surface (222) is formed by the second material (2221) having a hardness of 50 to 70 degrees, and the hardness of the second material (2221) can adapt to the air guide valve rubber spring (23) and seal an exhaust hole (R). The relative hardness of the above two materials can be adjusted according to actual production requirements.

[0052] The air guide valve rubber spring (23) reduces its preload force to within 40% to 50% of the original force by changing the original spring length; and reduces the preload force of the movable iron spring (12) to within 20% to 30%. After the aforementioned reduction in preload force, the movement frequency of the air guide valve rubber (22) can be greatly increased in combination with the energy required to maintain the original energized excitation state. The movement frequency of the air guide valve rubber (22) can be increased to between 125 Hz and 200 Hz, which is a multiple increase compared to the frequency of the aforementioned prior art between 10 Hz and 60 Hz.

[0053] Please refer to Figure 5 and Figure 6 As shown, the air guide valve rubber (22) further includes a metal material (223), and the metal material (223) is made of copper in the present invention, which is a material without magnetic attraction, and can also be replaced by materials with similar properties, and is not limited to the materials disclosed here, so as to avoid the influence caused by the power-on excitation;

[0054] Because the first material (2211) and the second material (2221) used in the aforementioned air valve rubber (22) will show uneven marks at the junction of the two materials after being heated and pressed for compounding, and the thickness of the materials will also vary. Therefore, in view of this point, if a metal material (223) is added between the two, the uneven marks at the junction of the two materials can be eliminated, and the variation of the average thickness can be reduced, so that the amount of depression of the air valve rubber (22) can be closer to uniform.

[0055] The high-response mini solenoid valve disclosed in the present invention improves the material properties of the air valve rubber (22), reduces the length of the movable iron spring (12) and the air valve rubber spring (23), thereby reducing the preload elastic force thereof, and further accelerates the response speed of the air valve rubber (22) in the reciprocating axial motion by maintaining the energy required for the original energization and magnetization, and increases it to between 125 Hz and 200 Hz at once. Compared with the original response frequency of 10 Hz to 60 Hz, the improvement effect is quite obvious, making the improved solenoid valve have a faster response frequency than conventional solenoid valves of the same level.

Claims

1. A high-response mini solenoid valve, comprising: a body (10), in which a fixed iron core (11), a movable iron spring (12) and a movable iron core (13) are arranged, and after a coil (14) also arranged inside the body (10) is energized and excited, the movable iron core (13) is coaxially pushed by the magnetic force of the coaxial fixed iron core (11); an air guide valve (20), connected to the body (10), the air guide valve (20) having an air inlet hole (P), a working hole (A), an exhaust hole (R) and an air guide valve rubber (22) sleeved with an air guide valve rubber spring (23 ... The valve rubber (22) is provided with a first side surface (221) and a second side surface (222) at both ends, and an air guide valve rubber seat (21) is further arranged between the air guide valve rubber (22) and the movable iron core (13). The movable iron core (13), the movable iron spring (12) and the air guide valve rubber spring (23) respectively correspond to the first side surface (221) and the second side surface (222) to push and move in conjunction, so that the air guide valve rubber (22) can reciprocate axially, so that the working hole (A) switches the air inlet hole (P) and the exhaust hole (R) to form different flow paths, so that the fluid can flow in accordance with the flow path; it is characterized in that The air guide valve rubber (22) is formed by heating and pressing a first material (2211) and a second material (2221) to form a composite, wherein the first side surface (221) is formed by the first material (2211), and the hardness of the first material (2211) can adapt to the movable iron spring (12) and seal an air inlet hole (P); and the second side surface (222) is formed by the second material (2221), and the hardness of the second material (2221) can adapt to the air guide valve rubber spring (23) and seal an exhaust hole (R); the air guide valve rubber spring (23) and the movable iron spring (12) can change the original spring length, so that the pre-stress length and the pre-stress elastic force are reduced, and the movement frequency of the air guide valve rubber (22) can be effectively improved while maintaining the original energized excitation state.

2. The high-response mini solenoid valve according to claim 1, characterized in that: The movement frequency of the air guide valve rubber (22) can be increased to between 125 Hz and 200 Hz.

3. The high-response mini solenoid valve according to claim 1, characterized in that: The air guide valve rubber (22) further comprises: a metal material (223) disposed inside the air guide valve rubber (22) to allow the first material (2211) and the second material (2221) to be stably combined by heating and pressing, and to make the uneven marks at the original joint of the two materials disappear, and to reduce the variation of the average thickness, so that the concave amount of the air guide valve rubber (22) is closer to uniform.

4. The high-response mini solenoid valve according to claim 1, characterized in that: The hardness of the first material (2211) is between 80 degrees and 90 degrees.

5. The high-response mini solenoid valve according to claim 1, characterized in that: The hardness of the second material (2221) is between 50 degrees and 70 degrees.

6. The high-response mini solenoid valve according to claim 3, characterized in that: The metal material (223) is a copper material or any other material that does not have magnetic attraction.

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