A bidirectional valve of optimized structure

Abstract

The utility model discloses a bidirectional valve of optimal structure relates to valve equipment technical field, including drain valve body, and drain valve body includes outer tube and inner tube, and the inside diameter of outer tube is greater than the outside diameter of inner tube, to make and leave water cavity between outer tube and inner tube, and the periphery of outer tube is provided with a plurality of outer water inlets that are linked with water cavity, the length of inner tube is longer than the length of outer tube, and one end of outer tube is fixed with one end of inner tube, and the other end of outer tube is left with installation space between inner wall of inner tube, forms non - closed end, and the periphery of one end of inner tube away from outer tube is slidably connected with water inlet valve element, and the outside of inner tube is provided with a plurality of inner water inlets, and water inlet valve element can block non - closed end box inner water inlet, and the side away from water inlet spring cover of inner tube is provided with one - way valve element, adopts the water cavity between outer tube and inner tube and the corresponding water inlet design, makes water or liquid flow path more smooth.

Description

Technical Field

[0001] This utility model relates to the field of valve equipment technology, and specifically to a two-way valve with an optimized structure. Background Technology

[0002] Two-way valves are components used to regulate fluid flow direction and control pressure start / stop, and are widely used in equipment such as water pumps and hydraulic presses. Traditional two-way valves typically employ complex internal structures to achieve bidirectional control and switching of water flow. These structures often contain numerous tiny channels, tortuous flow paths, and precision-fitted components. However, the presence of these tiny channels within existing two-way valves makes them susceptible to blockage by impurities in the liquid, leading to obstructed water flow and affecting the valve's normal opening and closing. Furthermore, the internal structure contains many bends and dead angles, causing severe turbulence as the liquid flows through them. This not only results in energy loss and pulsation of water or liquid flow, affecting the stability of fluid transmission, but also accelerates the wear of mechanical components, shortening the equipment's lifespan. Simultaneously, the complex structure increases the difficulty of internal surface treatment, making cleaning challenging and prone to bacterial growth and scale formation, further affecting fluid quality and hindering long-term stable operation. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes an optimized two-way valve, comprising a drain valve body. The drain valve body includes an outer cylinder and an inner cylinder. The inner diameter of the outer cylinder is larger than the outer diameter of the inner cylinder, allowing a water passage cavity between the outer and inner cylinders. Multiple external water inlets connected to the water passage cavity are provided on the outer circumferential surface of the outer cylinder. The inner cylinder is longer than the outer cylinder. One end of the outer cylinder is fixed to one end of the inner cylinder, forming a closed end. An installation space is provided between the other end of the outer cylinder and the outer wall of the inner cylinder, forming a non-closed end. A water inlet valve core is slidably connected to the outer circumferential surface of the inner cylinder at the end furthest from the outer cylinder. Multiple internal water inlets are provided on the outer side of the inner cylinder. The water inlet valve core can block the internal water inlets of the non-closed end. A one-way valve core is provided on the side of the inner cylinder away from the water inlet spring cover. A one-way valve cover is fixed to the end of the drain valve body away from the water inlet spring cover. A sliding cavity is provided in the middle of the one-way valve cover, and the one-way valve core is slidably connected to the sliding cavity. The one-way valve core can block the inner cylinder.

[0004] Furthermore, an inlet spring cover is fixed to the end of the inner cylinder away from the closed end, and a rear compression spring is fixed between the inlet valve core and the inlet spring cover. The cross-section of the side of the inlet valve core near the non-closed end is in the shape of an isosceles trapezoid. When the rear compression spring is in the uncompressed state, the inlet valve core blocks the non-closed end and the inner inlet.

[0005] Furthermore, a stepped ring is fixed to the outer circumferential surface of the one-way valve core near the inner cylinder. A front compression spring is fixed between the stepped ring and the one-way valve cover. The cross-section of the one-way valve core and the stepped ring near the inner cylinder is an isosceles trapezoid. When the front compression spring is in an uncompressed state, the one-way valve core blocks the inner cylinder.

[0006] Furthermore, the one-way valve cover includes a connecting cylinder, a sliding cavity is opened in the connecting cylinder, and multiple connecting columns are fixed on the outer circumferential surface of the connecting cylinder. The connecting columns are fixed to the drain valve body so that the overall front and rear structures are different to prevent reverse installation.

[0007] Furthermore, the entire drain valve body is made of stainless steel with a DLC coating on the surface.

[0008] The beneficial effects of this utility model are as follows: 1. It abandons the traditional two-way valve with its extremely small internal orifice structure and adopts a water passage cavity between the outer and inner cylinders and a corresponding water inlet design, which makes the water or liquid flow more smoothly and the channel is wider, reducing water flow resistance and facilitating the transmission of water or liquid. It solves the problem of poor water flow caused by the small orifice of the traditional two-way valve being easily blocked.

[0009] 2. By simplifying the internal structure and reducing bends and dead angles, the liquid flows more smoothly when passing through the two-way valve, reducing turbulence caused by complex flow channels. A smooth water flow effectively reduces water or liquid flow pulsation, avoiding the impact and wear caused by pulsation on pipes, pumps, and other related mechanical components, thereby saving energy, reducing consumption, and extending the service life of mechanical components.

[0010] 3. The optimized two-way valve has a simpler structure, with fewer and more regular-shaped parts, making internal surface treatment easier and enabling more thorough cleaning and maintenance. This effectively solves the scaling problem caused by the complex structure of traditional two-way valves, reducing the possibility of bacterial growth and ensuring fluid quality. At the same time, the simpler structure makes diagnosis and repair easier in case of malfunction. 4. The unique front and rear structural design of the one-way valve cover, fixedly connected to the drain valve body via a connecting column, achieves a foolproof assembly function, preventing assembly failure or equipment damage due to incorrect orientation during installation. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view structural diagram of the present utility model; Figure 3 This is a cross-sectional structural schematic diagram of the present utility model. The reference numerals are explained as follows: 1. Drain valve body; 11. Outer cylinder; 12. Inner cylinder; 13. Outer water inlet; 14. Inner water inlet; 2. Water inlet valve core; 3. One-way valve core; 4. One-way valve cover; 5. Water inlet spring cover; 6. Front compression spring; 7. Rear compression spring; 8. Step ring. Detailed Implementation

[0012] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] The present invention will be further described below with reference to the accompanying drawings: A two-way valve with an optimized structure, such as Figure 1 , Figure 2 and Figure 3 As shown, the device includes a drain valve body 1, which comprises an outer cylinder 11 and an inner cylinder 12. The inner diameter of the outer cylinder 11 is larger than the outer diameter of the inner cylinder 12, so that a water passage cavity is left between the outer cylinder 11 and the inner cylinder 12. Multiple external water inlets 13 communicating with the water passage cavity are provided on the outer circumferential surface of the outer cylinder 11. The length of the inner cylinder 12 is longer than the length of the outer cylinder 11. One end of the outer cylinder 11 is fixed to one end of the inner cylinder 12, forming a closed end. An installation space is left between the other end of the outer cylinder 11 and the outer wall of the inner cylinder 12, forming a non-closed end. At the closed end, an inlet valve core 2 is slidably connected to the outer circumferential surface of the inner cylinder 12 away from the outer cylinder 11. Multiple inner inlets 14 are opened on the outer side of the inner cylinder 12. The inlet valve core 2 can block the inlet 14 inside the non-closed end box. A one-way valve core 3 is provided on the side of the inner cylinder 12 away from the spring cover 5 of the inlet. A one-way valve cover 4 is fixed at the end of the drain valve body 1 away from the spring cover 5 of the inlet. A sliding cavity is opened in the middle of the one-way valve cover 4. The one-way valve core 3 is slidably connected to the sliding cavity. The one-way valve core 3 can block the inner cylinder 12.

[0015] The water passage cavity formed by the diameter difference between the inner and outer cylinders 11 serves as the basic flow channel. The closed end and the non-closed end are constructed by the length difference between the inner cylinder 12 and the outer cylinder 11. The flow channel opening and closing control is achieved by the sliding displacement of the inlet valve core 2. Then, the sliding cooperation between the one-way valve core 3 and the sliding cavity forms a secondary flow channel control, thus forming a hierarchical control system with a double-layer flow channel and a double valve core.

[0016] like Figure 3 As shown, in this embodiment, an inlet spring cover 5 is fixed to the end of the inner cylinder 12 away from the closed end. A rear compression spring 7 is fixed between the inlet valve core 2 and the inlet spring cover 5. The cross-section of the side of the inlet valve core 2 near the non-closed end is an isosceles trapezoidal shape. When the rear compression spring 7 is in an uncompressed state, the inlet valve core 2 blocks the non-closed end and the inner inlet 14. A stepped ring 8 is fixed to the outer circumferential surface of the one-way valve core 3 near the end of the inner cylinder 12. A front compression spring 6 is fixed between the stepped ring 8 and the one-way valve cover 4. The cross-section of the one-way valve core 3 and the stepped ring 8 at the end near the inner cylinder 12 is an isosceles trapezoidal shape. When the front compression spring 6 is in an uncompressed state, the one-way valve core 3 blocks the inner cylinder 12. The rear compression spring 7 provides preload to the inlet valve core 2, and the front compression spring 6 provides preload to the one-way valve core 3, so that the fluid pressure is converted into the axial displacement of the valve core.

[0017] like Figure 1 As shown, in this embodiment, the one-way valve cover 4 includes a connecting cylinder, a sliding cavity is opened in the connecting cylinder, and multiple connecting columns are fixed on the outer circumferential surface of the connecting cylinder. The connecting columns are fixed to the drain valve body 1 so that the overall front and rear structures are different to prevent reverse installation.

[0018] In this embodiment, the drain valve body 1 is made entirely of stainless steel with a DLC coating on the surface. The DLC coating has a hardness ≥2000HV and a coefficient of friction ≤0.1, which improves hardness and wear resistance.

[0019] The working principle of this utility model is as follows: Low-pressure flow (water pressure 0.1-0.2MPa): When fluid enters the water passage chamber from the outer inlet 13 on the outer circumference of the outer cylinder 11, the fluid first acts on the end face of the inlet valve core 2, and the fluid pressure is converted into an axial force that pushes the inlet valve core 2 to move to the right. This axial force overcomes the preload of the rear compression spring 7 and drives the inlet valve core 2 to slide to the right along the outer circumference of the inner cylinder 12, and the rear compression spring 7 begins to be compressed. As the inlet valve core 2 moves to the right, an annular gap is formed between the inlet valve core 2 and the non-closed end face of the outer cylinder 11. This gap is the flow channel under low-pressure conditions. The fluid flows out from the two-way valve through this gap, realizing fluid transportation under low pressure. At this stage, because the compression of the rear compression spring 7 is small, the inlet valve core 2 is still in the position covering the inner inlet 14, the inner inlet 14 remains closed, and the one-way valve core 3 is in contact with the end face of the inner cylinder 12 under the preload of the front compression spring 6, and the flow channel of the inner cylinder 12 is in a closed state.

[0020] High-pressure flow (water pressure 25-30MPa): The axial force of the fluid acting on the inlet valve core 2 increases significantly. This force overcomes the elastic force of the rear compression spring 7, pushing the inlet valve core 2 further to the right, and the compression of the rear compression spring 7 increases. At this time, the inlet valve core 2 is removed from the coverage area of ​​the inner inlet port 14, the inner inlet port 14 is opened, and the fluid enters the water passage cavity through the outer inlet port 13, and can then enter the internal cavity of the inner cylinder 12 through the inner inlet port 14. The high-pressure fluid entering the inner cylinder 12 acts on the end face of the one-way valve core 3, generating an axial force that pushes the one-way valve core 3 to move to the left. When this force overcomes the preload of the front compression spring 6, the one-way valve core 3 slides to the right along the sliding cavity of the one-way valve cover 4, and the front compression spring 6 begins to be compressed. As the one-way valve core 3 moves to the left, a flow gap is formed between the one-way valve core 3 and the end face of the inner cylinder 12, and the fluid flows out from the inner cylinder 12 through this gap, realizing high-pressure, high-flow-rate fluid delivery. The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A two-way valve with an optimized structure, comprising a drain valve body (1), characterized in that: The drain valve body (1) includes an outer cylinder (11) and an inner cylinder (12). The inner diameter of the outer cylinder (11) is larger than the outer diameter of the inner cylinder (12) so that a water passage cavity is left between the outer cylinder (11) and the inner cylinder (12). The outer circumferential surface of the outer cylinder (11) is provided with multiple external water inlets (13) that communicate with the water passage cavity. The length of the inner cylinder (12) is longer than the length of the outer cylinder (11). One end of the outer cylinder (11) is fixed to one end of the inner cylinder (12) to form a closed end. The other end of the outer cylinder (11) is left with an installation space between it and the outer wall of the inner cylinder (12) to form a non-closed end. (12) A water inlet valve core (2) is slidably connected to the outer circumferential surface of the end away from the outer cylinder (11). Multiple inner water inlets (14) are opened on the outer side of the inner cylinder (12). The water inlet valve core (2) can block the water inlet (14) inside the non-closed end box. A one-way valve core (3) is provided on the side of the inner cylinder (12) away from the water inlet spring cover (5). A one-way valve cover (4) is fixed on the end of the drain valve body (1) away from the water inlet spring cover (5). A sliding cavity is opened in the middle of the one-way valve cover (4). The one-way valve core (3) is slidably connected to the sliding cavity. The one-way valve core (3) can block the inner cylinder (12).

2. The bidirectional valve with an optimized structure according to claim 1, characterized in that: The inner cylinder (12) is fixed with an inlet spring cover (5) at the end away from the closed end. A rear compression spring (7) is fixed between the inlet valve core (2) and the inlet spring cover (5). The cross section of the inlet valve core (2) near the non-closed end is an isosceles trapezoid. When the rear compression spring (7) is in an uncompressed state, the inlet valve core (2) blocks the non-closed end and the inner inlet (14).

3. The bidirectional valve with an optimized structure according to claim 1, characterized in that: A stepped ring (8) is fixed on the outer circumference of the one-way valve core (3) near the inner cylinder (12). A front compression spring (6) is fixed between the stepped ring (8) and the one-way valve cover (4). The cross section of the one-way valve core (3) and the stepped ring (8) near the inner cylinder (12) is an isosceles trapezoid. When the front compression spring (6) is in an uncompressed state, the one-way valve core (3) blocks the inner cylinder (12).

4. The bidirectional valve with an optimized structure according to claim 1, characterized in that: The one-way valve cover (4) includes a connecting cylinder, a sliding cavity is opened in the connecting cylinder, and multiple connecting columns are fixed on the outer circumferential surface of the connecting cylinder. The connecting columns are fixed to the drain valve body (1) so that the overall front and rear structures are different to prevent reverse installation.

5. The bidirectional valve with an optimized structure according to claim 1, characterized in that: The drain valve body (1) is made of stainless steel and has a DLC coating on its surface.

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