Isolation valve with integrated valve seat structure

Abstract

According to the isolating valve with the integrated valve seat structure, the sealing supporting part is integrally formed on the valve seat, so that the phenomenon that in the prior art, a secondary valve seat generates displacement due to high-strength impact of brake fluid, and consequently the performance of an electromagnetic valve is reduced or fails is effectively avoided, and the stability and the reliability of the isolating valve are remarkably improved. In addition, due to the integrated valve seat structure, the assembling process is simplified, the production cost is reduced, and meanwhile the overall compactness of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of isolation valves, in particular to an isolation valve with an integrated valve seat structure. Background Art

[0002] Isolation valves are used to isolate the oil circuits between two chambers in the brake system's hydraulic control unit (HCU). Existing two-stage high-pressure switching solenoid valve technology typically presses the secondary valve seat into the valve seat housing. However, over extended operation, the secondary valve seat can shift due to the high-intensity backflow of brake fluid, leading to solenoid valve performance degradation or even failure. Summary of the Invention

[0003] In view of this, the utility model provides an isolation valve with an integrated valve seat structure.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] An isolation valve with an integrated valve seat structure includes an outer shell and a valve seat. An inner cavity is formed between the outer shell and the valve seat. A static iron core, a movable iron core assembly and a steel ball seat assembly are arranged in sequence from top to bottom in the inner cavity. The inner wall of the valve seat protrudes to form a sealing support portion. The steel ball seat assembly is arranged on the sealing support portion and is sealed with the sealing support portion.

[0006] Preferably, the valve seat has a steel ball mounting portion and a liquid outlet portion, the sealing support portion is formed by folding the portion where the steel ball mounting portion and the liquid outlet portion are connected toward the center of the valve seat, and the sealing support portion has an inclined sealing surface connected to the steel ball seat assembly.

[0007] Preferably, eight flow holes with an inner diameter of 1.3 mm are provided at equal intervals on the inner wall of one side of the steel ball mounting portion close to the sealing support portion.

[0008] Preferably, a sloped end is provided at the bottom of the liquid outlet, and the sloped end has a bottom inclined surface. The bottom inclined surface is inclined in the direction that the outer wall of the liquid outlet is inclined toward the lower part of the center axis of the valve seat, and the inclination angle of the bottom inclined surface is 11.5°.

[0009] Preferably, the inclined sealing surface is formed by stamping, and the inclined sealing surface is inclined in a direction such that the upper portion of the sealing support portion is inclined toward the lower portion of the center axis of the valve seat.

[0010] Preferably, the moving iron core assembly includes a moving iron core and a steel ball, the steel ball seat assembly includes a steel ball seat, a steel ball spring and a connecting sleeve, the connecting sleeve is arranged at the bottom end of the moving iron core assembly, and an installation cavity is formed in the connecting sleeve. The steel ball seat and the steel ball spring are arranged in the installation cavity from top to bottom in sequence, and one end of the steel ball seat passes through the connecting sleeve and extends into the inner cavity.

[0011] Preferably, a flow channel is formed on the steel ball seat to communicate the mounting cavity and the inner cavity, and the steel ball is in sealing contact with the inner wall of the top of the flow channel.

[0012] The utility model discloses the beneficial effect lies in: through integral forming sealing support part on valve seat, effectively avoided the displacement of secondary valve seat in prior art because of high strength impact of brake fluid, leading to the phenomenon of electromagnetic valve performance decline or failure, make the stability and reliability of isolation valve get remarkable promotion. In addition, the integrated valve seat structure simplifies the assembly process, reduces the production cost, improves the overall compactness of product simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will be briefly introduced the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0014] ATTACHMENT Figure 1 It is the structural schematic diagram of the utility model;

[0015] ATTACHMENT Figure 2 It is the attachment Figure 1 The enlarged view of A in the middle. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0017] The utility model will be further described in conjunction with the drawings in the specification.

[0018] The utility model provides the following technical scheme:

[0019] Such as the attachment Figure 1-2As shown, the utility model discloses an isolation valve with an integrated valve seat structure, including an outer shell 1 and a valve seat 2, an inner cavity 3 is formed between the outer shell 1 and the valve seat 2, a static iron core 4, a moving iron core assembly 5 and a steel ball assembly are sequentially arranged in the inner cavity 3 from top to bottom, the inner wall of the valve seat 2 protrudes to form a sealing support portion 6, and the steel ball seat assembly is arranged on the sealing support portion 6 and is sealed to the sealing support portion 6. Specifically, in this design, by integrally forming the sealing support portion 6 on the valve seat 2, the phenomenon in the prior art that the secondary valve seat 2 is displaced due to the high-intensity impact of the brake fluid, resulting in a decrease in the performance of the solenoid valve or failure, is effectively avoided, thereby significantly improving the stability and reliability of the isolation valve. In addition, the integrated valve seat 2 structure simplifies the assembly process, reduces production costs, and improves the overall compactness of the product.

[0020] Furthermore, the valve seat 2 has a steel ball mounting portion 7 and a liquid outlet portion 8. The sealing support portion 6 is formed by folding the portion where the steel ball mounting portion 7 and the liquid outlet portion 8 meet toward the center of the valve seat 2. The sealing support portion 6 has an inclined sealing surface 9 that connects to the steel ball seat assembly. Specifically, in this embodiment, the folded sealing support portion 6 has a certain degree of elasticity, which can accommodate steel ball seat assemblies of different sizes, thereby ensuring the uniformity and reliability of the sealing effect. In addition, the inclined design of the sealing support portion 6 allows the steel ball seat assembly to more stably adhere to the sealing surface when subjected to pressure, further improving the sealing performance of the isolation valve.

[0021] In this design, a spring 10 is interposed between the movable iron core assembly 5 and the stationary iron core 4. This spring 10 ensures that the movable iron core assembly 5 quickly returns to its original position when the electromagnetic force is removed, thereby ensuring a rapid response of the isolation valve. Furthermore, the preload of the spring 10 ensures close contact between the ball seat assembly and the sealing support 6, further improving the sealing performance of the isolation valve.

[0022] Furthermore, eight flow holes 11 with an inner diameter of 1.3 mm are evenly spaced on the inner wall of the steel ball mounting portion 7 near the sealing support portion 6. Specifically, in this embodiment, the provision of multiple flow holes 11 effectively reduces pressure loss when fluid passes through the isolation valve, improving fluid flow efficiency. Furthermore, the uniform distribution of flow holes 11 ensures uniform fluid flow through the isolation valve, preventing localized overflow and thereby enhancing the stability and reliability of the isolation valve.

[0023] Furthermore, a beveled end 12 is provided at the bottom of the liquid outlet portion 8. This beveled end 12 has a bottom inclined surface 13. This bottom inclined surface 13 is tilted in such a way that the outer wall of the liquid outlet portion 8 is tilted toward the lower portion of the central axis of the valve seat 2, and the tilt angle of this bottom inclined surface 13 is 11.5°. Specifically, in this embodiment, the design of the beveled end 12 provides a guiding effect when the isolation valve is press-fitted into the valve body, thereby improving the seal between the isolation valve and the valve body.

[0024] Furthermore, the inclined sealing surface 9 is formed by stamping, and the inclined sealing surface 9 is inclined in a direction such that the upper portion of the sealing support portion 6 is inclined toward the lower portion of the central axis of the valve seat 2. Specifically, in this embodiment, the inclined sealing surface 9 formed by stamping has high precision and consistency, ensuring good contact between the sealing surface and the steel ball seat assembly, thereby improving the sealing performance of the isolation valve and increasing the sealing qualification rate of the solenoid valve.

[0025] Furthermore, the movable iron core assembly 5 includes a movable iron core 20 and a steel ball 14, and the steel ball seat assembly includes a steel ball seat 15, a steel ball spring 19, and a connecting sleeve 16. The connecting sleeve is mounted on the bottom end of the movable iron core assembly, and a mounting cavity 17 is formed within the connecting sleeve 16. The steel ball seat and steel ball spring 19 are sequentially arranged in the mounting cavity from top to bottom, and one end of the steel ball seat 15 extends into the inner cavity through the connecting sleeve 16. Specifically, in this embodiment, a flow channel is defined on the steel ball seat 15, connecting the mounting cavity 17 and the inner cavity 3, and the movable iron core assembly 5 is sealed to the inner wall at the top of the flow channel. When opening, when the coil set in the outer shell is energized, the coil generates magnetic force, and the moving iron core 20 is attracted by the electromagnetic force and moves toward the static iron core. The steel ball 14 on the moving iron core 20 moves upward with the moving iron core 20, thereby moving away from the steel ball seat 15, opening the upper chamber, and the pressure in the upper chamber drops rapidly. The moving iron core 20 continues to move upward, and the connecting sleeve 161 compresses the steel ball spring 19, driving the steel ball seat 15 to move upward, thereby opening the flow channel between the steel ball seat 15 and the valve seat, and the solenoid valve is fully opened at this time; when the power is off, the flow channel of the steel ball seat 15 is already in a closed state, and the spring 10 resets the moving iron core assembly 5 and the steel ball seat 15 to the valve seat, thereby closing the valve seat flow channel.

[0026] Furthermore, a flow channel 18 communicating with the installation cavity 17 and the inner cavity 3 is provided on the steel ball seat 15 , and the steel ball 14 is sealedly connected to the inner wall of the top of the flow channel 18 .

[0027] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An isolation valve with an integrated valve seat structure, comprising a housing and a valve seat, wherein an inner cavity is formed between the housing and the valve seat, and a static iron core, a movable iron core assembly, and a steel ball seat assembly are sequentially arranged in the inner cavity from top to bottom, characterized in that: The inner wall of the valve seat protrudes to form a sealing support portion, and the steel ball seat assembly is arranged on the sealing support portion and is sealed with the sealing support portion.

2. The isolation valve with an integrated valve seat structure according to claim 1, characterized in that: The valve seat has a steel ball mounting portion and a liquid outlet portion. The sealing support portion is formed by folding the portion where the steel ball mounting portion and the liquid outlet portion meet toward the center of the valve seat. The sealing support portion has an inclined sealing surface connected to the steel ball seat assembly.

3. The isolation valve with an integrated valve seat structure according to claim 2, characterized in that: Eight flow holes with an inner diameter of 1.3 mm are evenly spaced on the inner wall of one side of the steel ball mounting portion close to the sealing support portion.

4. The isolation valve with an integrated valve seat structure according to claim 2, characterized in that: The bottom of the liquid outlet is provided with an inclined end, and the inclined end has a bottom inclined surface. The inclination direction of the bottom inclined surface is that the outer wall of the liquid outlet is inclined toward the lower part of the valve seat center axis, and the inclination angle of the bottom inclined surface is 11.5°.

5. The isolation valve with an integrated valve seat structure according to claim 2, characterized in that: The inclined sealing surface is formed by stamping, and the inclined direction of the inclined sealing surface is that the upper part of the sealing support part is inclined toward the lower part of the center axis of the valve seat.

6. The isolation valve with an integrated valve seat structure according to claim 1, characterized in that: The moving iron core assembly includes a moving iron core and a steel ball, and the steel ball seat assembly includes a steel ball seat, a steel ball spring and a connecting sleeve. The connecting sleeve is arranged at the bottom end of the moving iron core assembly, and an installation cavity is formed in the connecting sleeve. The steel ball seat and the steel ball spring are arranged in the installation cavity from top to bottom in sequence, and one end of the steel ball seat passes through the connecting sleeve and extends into the inner cavity.

7. The isolation valve with an integrated valve seat structure according to claim 6, characterized in that: A flow channel communicating with the installation cavity and the inner cavity is provided on the steel ball seat, and the steel ball is sealedly connected to the inner wall of the top of the flow channel.

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