Valve core of electromagnetic pilot operated valve

Abstract

The utility model relates to the technical field of mechanical design, in particular to a valve core of an electromagnetic pilot operated valve, which comprises a valve core main body, two groups of buffer layers are fixed at the upper end of the valve core main body, the diameter length of the upper group of buffer layers is larger than that of the lower group of buffer layers, lantern rings are fixed at the upper ends of the two groups of buffer layers, and the lantern rings are fixed at the lower ends of the two groups of buffer layers. And a limiting disc is fixed at the upper end of the buffer layer. The buffer layers and the lantern rings are used in cooperation, when equipment is used, the two sets of buffer layers and lantern rings are connected with the valve body, through the buffer layers and the lantern rings of different layers and sizes, high-pressure fluid firstly rushes into the positions of the small set of buffer layers and lantern rings, preliminary throttling and pressure reduction are generated, and the high-pressure fluid continuously moves upwards along with the valve element; when the fluid enters the buffer layer and the lantern ring which are wider and deeper, the pressure is further released step by step, so that the high-speed fluid is prevented from directly washing the surface of equipment, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of mechanical design technology, specifically to an electromagnetic pilot valve core. Background Technology

[0002] The field of mechanical design technology applies various scientific principles, engineering knowledge, and innovative thinking to plan the function, structure, shape, size, materials, and manufacturing process of mechanical products, and to design mechanical products or parts that meet specific needs. Based on the usage requirements of pilot valves, the shape, size, tolerance, and other parameters of the valve core are precisely designed to ensure that it fits perfectly with the valve seat, valve body, and other components.

[0003] Currently, the valve core of an electromagnetic pilot valve is typically made of a specific metal or other materials with certain strength and wear resistance. It has a precisely designed shape and structure, and is installed in the valve body of the electromagnetic pilot valve. Under the combined action of electromagnetic force, spring force, and fluid pressure, it can perform linear reciprocating motion within the valve body. When the electromagnetic coil is de-energized, the valve core will return to its initial position under the action of the spring force and other reset mechanisms, restoring the fluid control state to its initial setting. The performance of the electromagnetic pilot valve core, such as its sensitivity of action and the reliability of sealing, directly affects the working stability and control accuracy of the electromagnetic pilot valve and even the entire fluid control system.

[0004] However, the applicant believes that the shortcomings are as follows: 1. When the existing equipment is used for a long time, it may be subjected to water pressure for a long time, which may cause damage or breakage to the equipment, thus reducing the service life of the equipment to a certain extent; 2. It may be inconvenient to discharge pollutants during use, which may cause pollutants to be blocked inside the equipment for a long time, thereby reducing the performance of the equipment.

[0005] To address this issue, we propose an electromagnetic pilot valve core. Utility Model Content

[0006] The purpose of this invention is to provide an electromagnetic pilot valve core to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an electromagnetic pilot valve core, comprising a valve core body,

[0008] A buffer layer is fixed to the upper end of the valve core body. There are two sets of buffer layers. The diameter and length of the upper set of buffer layers are larger than those of the lower set of buffer layers. A collar is fixed to the upper end of both sets of buffer layers. A limit plate is fixed to the upper end of the buffer layer. A threaded sleeve is fixed to the lower end of the valve core body. A push rod is slidably inserted into the lower end of the threaded sleeve. A buffer cylinder is fixedly connected to the bottom end of the push rod. A base is fixed to the lower end of the buffer cylinder.

[0009] Preferably, the collar is made of rubber, which can fill the gap in the valve body and reduce the leakage rate of the equipment to a certain extent.

[0010] Preferably, the inner surface of the threaded sleeve is threadedly connected to the upper end surface of the push rod, and the sealing preload can be adjusted by rotating the device. The self-locking thread design can improve the stability of the device.

[0011] Preferably, the lower end of the top rod is provided with multiple sets of guide grooves, and the inside of the guide grooves is provided with micropores. By using the micropores, the pressure of the equipment can be released to a certain extent.

[0012] Preferably, the buffer cylinder has multiple sets of circular grooves at both the upper and lower ends to slow down the cutoff speed of the fluid.

[0013] Preferably, a transition ring is fixed to the lower end of the buffer cylinder, and the lower end of the transition ring is fixedly connected to the upper end of the base. Through the use of the transition ring, the impact force on the external force can be reduced to a certain extent.

[0014] This utility model provides an electromagnetic pilot valve core, which has the following beneficial effects:

[0015] By using the buffer layer and collar in combination, when the equipment is in use, the two sets of buffer layers and collars are connected to the valve body. Through the buffer layers and collars of different levels and sizes, the high-pressure fluid first rushes into the position of the smaller set of buffer layers and collars, and generates initial throttling and pressure reduction. As the valve core continues to move upward, the fluid enters the interior of the wider and deeper set of buffer layers and collars, and the pressure is further released gradually and smoothly, thereby avoiding high-speed fluid directly scouring the surface of the equipment, thus extending the service life of the equipment.

[0016] By using the push rod, guide groove and buffer cylinder in combination, the guide groove can make the fluid form a spiral vortex on the surface of the valve core, generating a dynamic pressure lubrication film. At the same time, the vortex washes away contaminants. Then, the contaminants can be discharged through the use of micropores. Meanwhile, multiple sets of circular grooves can form a vortex damping layer, thereby slowing down the fluid cut-off speed and improving the performance of the equipment to a certain extent. Attached image description:

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the buffer layer and collar of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the top rod of this utility model;

[0021] Figure 4 This is a three-dimensional schematic diagram of the structure of the buffer cylinder of this utility model.

[0022] In the diagram: 1. Valve core body; 2. Buffer layer; 3. Collar; 4. Limiting disc; 5. Threaded sleeve; 6. Push rod; 7. Guide groove; 8. Buffer cylinder; 9. Base; 10. Transition ring. Detailed implementation method:

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This embodiment proposes an electromagnetic pilot valve core.

[0025] Example 1

[0026] like Figure 1 and Figure 2 As shown, this embodiment proposes an electromagnetic pilot valve core, including a valve core body 1. A buffer layer 2 is fixed at the upper end of the valve core body 1. The buffer layer 2 is provided in two sets. The upper set of buffer layers 2 has a larger diameter and length than the lower set of buffer layers 2. A collar 3 is fixed at the upper end of both sets of buffer layers 2. A limit plate 4 is fixed at the upper end of the buffer layer 2. The collar 3 is made of rubber.

[0027] In the above embodiments, the use of two sets of buffer layers 2 and collars 3 can improve the airtightness of the equipment and reduce the friction of the equipment. At the same time, according to the two sets of buffer layers 2 and collars 3 of different sizes, the high-pressure fluid can be released along the diameter difference gradient, thereby reducing the pressure brought to the equipment by the high-pressure fluid and improving the service life of the equipment to a certain extent.

[0028] Example 2

[0029] like Figure 3 and Figure 4 As shown, based on the same concept as the above embodiment, this embodiment also proposes: a threaded sleeve 5 is fixed to the lower end of the valve core body 1, and a push rod 6 is slidably inserted into the lower end of the threaded sleeve 5. A buffer cylinder 8 is fixedly connected to the bottom end of the push rod 6, and a base 9 is fixed to the lower end of the buffer cylinder 8. The inner surface of the threaded sleeve 5 is threadedly connected to the upper surface of the push rod 6. Multiple sets of guide grooves 7 are opened at the lower end of the push rod 6, and micro-holes are opened inside the guide grooves 7. The guide grooves 7 are spiral-shaped. Multiple sets of circular grooves are opened at both the upper and lower ends of the buffer cylinder 8. A transition ring 10 is fixed to the lower end of the buffer cylinder 8, and the lower end of the transition ring 10 is fixedly connected to the upper end of the base 9.

[0030] In the above embodiment, the height of the equipment can be adjusted by rotating the threaded sleeve 5 and moving it on the surface of the push rod 6. The pressure of the water flow can be buffered to a certain extent by multiple sets of spiral guide grooves 7. At the same time, the pollutants can be discharged by the combined use of multiple sets of micropores. The pressure brought by the water flow is reduced by the combined use of the upper and lower sets of circular grooves of the buffer cylinder 8.

[0031] Working principle: When the equipment is in use, the valve core body 1 is moved upward, so that the two sets of buffer layers 2 at the upper end cooperate. The large diameter collar 3 can preferentially bear the high pressure fluid to form the main seal. At the same time, the rubber elastomer allows the collar 3 to deform and fill through self-adaptation, thereby avoiding leakage of the equipment. The position of the valve core body 1 is adjusted by rotating the threaded push rod 6 to adapt to different working conditions. The multiple sets of guide grooves 7 and the internal micropores at the bottom of the push rod 6 can eliminate the hydraulic jamming phenomenon when the equipment moves, and use the micropore jet flushing action to remove pollutants.

[0032] When the equipment is shut down, the eddy current damping layer is formed by the circular grooves at the upper and lower ends of the buffer cylinder 8, which consumes the impact kinetic energy in a stepwise manner, thereby reducing the pressure brought by the water flow. The transition ring 10 between the buffer cylinder 8 and the base 9 disperses the pressure, and at the same time, the material of the collar 3 absorbs noise.

[0033] The above is the complete working principle of this utility.

[0034] Finally, several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may change. Second, the accompanying drawings of the embodiments disclosed in this utility model only involve structures relevant to the embodiments disclosed in this utility model. Other structures can refer to common designs. Where there is no conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A valve core for an electromagnetic pilot valve, comprising a valve core body (1), characterized in that: The upper end of the valve core body (1) is fixed with a buffer layer (2). The buffer layer (2) is provided in two sets. The upper set of buffer layers (2) is larger in diameter and length than the lower set of buffer layers (2). Both sets of buffer layers (2) are fixed with a collar (3). The upper end of the buffer layer (2) is fixed with a limit plate (4). The lower end of the valve core body (1) is fixed with a threaded sleeve (5). The lower end of the threaded sleeve (5) is slidably inserted with a push rod (6). The bottom end of the push rod (6) is fixedly connected with a buffer cylinder (8). The lower end of the buffer cylinder (8) is fixed with a base (9).

2. The electromagnetic pilot valve core according to claim 1, characterized in that: The collar (3) is made of rubber.

3. The electromagnetic pilot valve core according to claim 1, characterized in that: The inner surface of the threaded sleeve (5) is threadedly connected to the upper end surface of the push rod (6).

4. The electromagnetic pilot valve core according to claim 1, characterized in that: The lower end of the top rod (6) is provided with multiple sets of guide grooves (7), and the interior of the guide grooves (7) is provided with micropores.

5. The electromagnetic pilot valve core according to claim 1, characterized in that: Multiple sets of circular grooves are opened at both the upper and lower ends of the buffer cylinder (8).

6. The electromagnetic pilot valve core according to claim 1, characterized in that: The lower end of the buffer cylinder (8) is fixed with a transition ring (10), and the lower end of the transition ring (10) is fixedly connected to the upper end of the base (9).

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