High-precision one-way valve

Abstract

The utility model relates to the technical field of valves, in particular to a high-precision one-way valve which comprises a main valve body, a flow inlet and a flow outlet are formed in the side face of the main valve body respectively, an adjusting groove is formed in one end of the main valve body, a piston is connected to one side of the main valve body in a sliding mode, and a fixed baffle is fixedly connected to one side of the main valve body. One end of the valve body is fixedly connected with a first spring, and one end of the first spring is fixedly connected with a valve element body. The valve element has the beneficial effects that the multiple sets of sliding sealing plates are arranged on the fixed baffle, when the valve element body resets under the action of the first spring, the valve element body pushes the multiple sealing plates to seal the flowing cavity firstly, then the valve element body continues to slide by a certain distance, and then the valve element body is matched with the fixed baffle to extrude and seal the flowing cavity; in this way, a certain reset time is given to the first spring, and it is guaranteed that no fluid flows back in the reset process of the first spring.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-precision one-way valve. Background Art

[0002] A one-way valve is a valve that allows the fluid to flow only along the inlet, but the medium at the outlet cannot flow back. It is commonly known as a one-way valve, also known as a check valve or a non-return valve.

[0003] At present, most one-way valves are composed of structures such as valve body, valve core, fluid inlet and outlet, valve seat and spring. The fluid squeezes the valve core from the inlet and outlet so that the valve core is in contact, extrusion, sealing and disengagement state with the valve body under the action of the spring, thereby realizing one-way flow of the fluid.

[0004] However, since the sealing of the one-way valve only relies on the contact and extrusion seal between the valve core and the valve body under the extrusion of the spring, and the reset of the spring requires a certain amount of time, there is still a possibility that some fluid will flow back. Therefore, the utility model proposes a high-precision one-way valve to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a high-precision one-way valve to solve the problem raised in the above-mentioned background technology that the resetting of the spring requires a certain amount of time, while the sealing of the one-way valve relies on the contact and extrusion seal between the valve core and the valve body under the extrusion of the spring, which may lead to partial fluid backflow during the resetting process of the spring.

[0006] To achieve the above object, the utility model provides the following technical solution: a high-precision one-way valve, the high-precision one-way valve comprising:

[0007] A valve body, wherein the sides of the valve body are respectively provided with an inlet and an outlet, an adjusting groove is provided at one end of the valve body, a piston is slidably connected to one side of the adjusting groove in the inner cavity of the valve body, a fixed baffle is fixedly connected to one side of the inner cavity of the valve body, a No. 1 spring is fixedly connected to one end of the inner cavity of the valve body, a valve core body is fixedly connected to one end of the valve core body, a plurality of No. 1 protrusions distributed in a circular array are fixedly connected to one end of the valve core body, one side of the plurality of No. 1 protrusions are all set to a "slope", and one side of the fixed baffle is slidably connected to It is connected to multiple sealing plates corresponding to the position of the No. 1 protrusion, one side of the sealing plate is fixedly connected to a connecting rod, the connecting rod corresponds to the position of the No. 1 protrusion and is plugged into the valve core body, a No. 2 spring is fixedly connected between the connecting rod and the valve body, one end of the valve core body is fixedly connected to two symmetrically arranged No. 2 protrusions, one end of the two No. 2 protrusions are both set as "inclined surfaces", one side of the fixed baffle is slidably connected to a force transmission plate corresponding to the position of the No. 2 protrusion, both ends of the force transmission plate are set as "inclined surfaces" and the positions of the force transmission plate and the piston correspond.

[0008] Preferably, the plurality of connecting rods are arranged in an "L" shape, and one end of the fixed baffle is provided with a plurality of No. 1 sliding grooves for the connecting rods to slide.

[0009] Preferably, a mounting groove is provided on one side of the fixed baffle, and the sealing plate is slidably connected to the mounting groove.

[0010] Preferably, a No. 2 slide groove is opened at one end of the fixed baffle, the force transmission plate and the No. 2 slide groove are slidably connected, and the force transmission plate is arranged in a "V" shape.

[0011] Preferably, a plurality of slots are provided on one side of the valve core body, and the connecting rods are slidably plugged into the slots.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides multiple sets of sliding sealing plates on the fixed baffle plate. When the valve core body is reset under the action of No. 1 spring, the valve core body will first push the multiple sealing plates to seal the flow chamber. Then the valve core body will continue to slide for a certain distance and cooperate with the fixed baffle plate to squeeze and seal the flow chamber. This gives the No. 1 spring a certain reset time and ensures that there will be no fluid backflow during the reset of the No. 1 spring. In addition, an extra seal is added, thereby improving the overall sealing accuracy of the device. This solves the problem that the reset of the spring requires a certain amount of time, while the sealing of the one-way valve relies on the contact and squeeze seal between the valve core and the valve body under the squeeze of the spring, resulting in partial fluid backflow during the reset of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a side sectional schematic diagram of the overall structure of the utility model;

[0016] Figure 3 This is a side schematic diagram of the fixed baffle structure of the utility model;

[0017] Figure 4 This is a side schematic diagram of the sealing plate structure of the utility model;

[0018] Figure 5 This is a side schematic diagram of the main structure of the valve core of the utility model;

[0019] Figure 6 It is a side schematic diagram of the force transmission plate structure of the utility model.

[0020] In the figure: 1. Valve body; 11. Inlet; 12. Outlet; 13. Adjustment groove; 2. Piston; 3. Fixed baffle; 31. Installation groove; 32. Slide No. 1; 33. Slide No. 2; 4. Valve core body; 41. Slot; 5. Spring No. 1; 6. Bump No. 1; 7. Sealing plate; 71. Connecting rod; 8. Force transfer plate; 9. Bump No. 2. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0025] See also Figures 1 to 6 , the utility model provides a technical solution:

[0026] Embodiment 1: A high-precision one-way valve, the high-precision one-way valve comprises: a valve body 1.

[0027] Specifically, the side of the valve body 1 is respectively provided with an inlet 11 and an outlet 12, an adjusting groove 13 is provided at one end of the valve body 1, a piston 2 is slidably connected to one side of the adjusting groove 13 in the inner cavity of the valve body 1, a fixed baffle 3 is fixedly connected to one side of the inner cavity of the valve body 1, a No. 1 spring 5 is fixedly connected to one end of the inner cavity of the valve body 1, a valve core body 4 is fixedly connected to one end of the valve core body 4, a plurality of No. 1 protrusions 6 distributed in a circumferential array are fixedly connected to one end of the valve core body 4, one side of the plurality of No. 1 protrusions 6 are all set to be "inclined", and a plurality of seals corresponding to the positions of the No. 1 protrusions 6 are slidably connected to one side of the fixed baffle 3 Plate 7, one side of the sealing plate 7 is fixedly connected with a connecting rod 71, the position of the connecting rod 71 and the No. 1 protrusion 6 corresponds to the position and is plugged into the valve core body 4, a No. 2 spring is fixedly connected between the connecting rod 71 and the valve body body 1, one end of the valve core body 4 is fixedly connected with two symmetrically arranged No. 2 protrusions 9, one end of the two No. 2 protrusions 9 are both set as "inclined surfaces", one side of the fixed baffle plate 3 is slidably connected with a force transmission plate 8 corresponding to the position of the No. 2 protrusion 9, both ends of the force transmission plate 8 are set as "inclined surfaces" and the positions of the force transmission plate 8 and the piston 2 correspond. When the device is implemented, when the fluid enters the valve body body 1 from the direction of the inlet 11, it will flow into the valve body 1 synchronously. The adjusting groove 13 gives a thrust to the piston 2, prompting the piston 2 to push the force transmission plate 8 to slide. The sliding of the force transmission plate 8 will push the No. 2 protrusion 9 to slide and then drive the valve core body 4 to slide upward. As the valve core body 4 moves upward, the squeezing of the connecting rod 71 will be released. At this time, the connecting rod 71 will gradually pull the sealing plate 7 toward the outer ring of the valve body 1 under the action of the No. 2 spring, so that the piston 2 can contact the valve core body 4, and then continue to push the valve core body 4 to slide upward. The valve core body 4 will move away from the fixed baffle 3, so that the fluid can be transmitted from the flow cavity to the outlet 12. When the fluid does not enter the direction of the inlet 11, the valve core body The body 4 will slide toward the end of the fixed baffle 3 under the action of the No. 1 spring 5. During the sliding process of the valve core body 4, the connecting rod 71 will be squeezed by the No. 1 protrusion 6 and the force transmission plate 8 will be squeezed by the No. 2 protrusion 9. Finally, the connecting rod 71 will slide with the sealing plate 7 toward the axis of the valve body main body 1, first completing the sealing of the flow chamber. Then, as the valve core body 4 slides, the connecting rod 71 will be in a vertical plug-in state with the valve core body 4, thereby ensuring that the valve core body 4 is in contact with the fixed baffle 3, forming a second seal on the flow chamber, thereby greatly solving the problem that the fluid may flow back from the outlet 12 when the No. 1 spring 5 is reset.

[0028] In order to facilitate the sliding installation of the connecting rod 71, the multiple connecting rods 71 ​​of the present application are all arranged in an "L" shape, and one end of the fixed baffle 3 is provided with multiple No. 1 slide grooves 32 for the connecting rod 71 to slide. The "L"-shaped connecting rod 71 can not only withstand the extrusion of the No. 1 protrusion 6, but also cooperate with the No. 1 slide groove 32 to limit the flipping and tilting of the sealing plate 7.

[0029] In order to facilitate the sliding installation of the sealing plate 7, a mounting groove 31 is opened on one side of the fixed baffle 3 of the present application, and the sealing plate 7 and the mounting groove 31 are slidingly connected. The mounting groove 31 provides the sealing plate 7 with storage space so that the fluid can pass through the flow cavity.

[0030] In order to facilitate the sliding installation of the force transmission plate 8, a second slide groove 33 is opened at one end of the fixed baffle 3 of the present application. The force transmission plate 8 and the second slide groove 33 are slidably connected and the force transmission plate 8 is set to a "V" shape. The "V"-shaped force transmission plate 8 can better transmit force, and the No. 2 slide groove 33 can facilitate the sliding of the force transmission plate 8.

[0031] In order to better adapt to the reset of the No. 1 spring 5, a plurality of slots 41 are opened on one side of the valve core body 4 of the present application, and the connecting rod 71 and the slot 41 are slidably plugged in, so that after the sealing plate 7 seals the flow chamber, the valve core body 4 can still continue to slide and contact with the fixed baffle 3 to perform secondary sealing on the flow chamber, thereby ensuring that the flow chamber is sealed before the No. 1 spring 5 is reset, thereby improving the overall sealing accuracy.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision one-way valve, characterized in that: The high-precision one-way valve comprises: A valve body (1), wherein the side of the valve body (1) is respectively provided with an inlet (11) and an outlet (12), an end of the valve body (1) is provided with an adjustment groove (13), one side of the adjustment groove (13) in the inner cavity of the valve body (1) is slidably connected to a piston (2), one side of the inner cavity of the valve body (1) is fixedly connected to a fixed baffle (3), one end of the inner cavity of the valve body (1) is fixedly connected to a No. 1 spring (5), one end of the No. 1 spring (5) is fixedly connected to a valve core body (4), one end of the valve core body (4) is fixedly connected to a plurality of No. 1 protrusions (6) distributed in a circumferential array, one side of the plurality of No. 1 protrusions (6) is set to a "slant", one side of the fixed baffle (3) is slidably connected to the piston (2), one side of the fixed baffle (3) is fixedly connected to the valve core body (4), and one end of the valve core body (4) is fixedly connected to a plurality of No. 1 protrusions (6) distributed in a circumferential array. A plurality of sealing plates (7) are dynamically connected to the valve core (6) and correspond to the position of the No. 1 protrusion (6); a connecting rod (71) is fixedly connected to one side of the sealing plate (7); the connecting rod (71) corresponds to the position of the No. 1 protrusion (6) and is plugged into the valve core body (4); a No. 2 spring is fixedly connected between the connecting rod (71) and the valve body (1); one end of the valve core body (4) is fixedly connected to two symmetrically arranged No. 2 protrusions (9); one end of the two No. 2 protrusions (9) are both arranged as "inclined surfaces"; one side of the fixed baffle (3) is slidably connected to a force transmission plate (8) corresponding to the position of the No. 2 protrusion (9); both ends of the force transmission plate (8) are arranged as "inclined surfaces" and the positions of the force transmission plate (8) and the piston (2) correspond.

2. A high-precision one-way valve according to claim 1, characterized in that: The plurality of connecting rods (71) are all arranged in an "L" shape, and one end of the fixed baffle (3) is provided with a plurality of No. 1 sliding grooves (32) for the connecting rods (71) to slide.

3. A high-precision one-way valve according to claim 2, characterized in that: A mounting groove (31) is provided on one side of the fixed baffle plate (3), and the sealing plate (7) is slidably connected to the mounting groove (31).

4. A high-precision one-way valve according to claim 3, characterized in that: A second slide groove (33) is provided at one end of the fixed baffle (3), the force transmission plate (8) and the second slide groove (33) are slidably connected, and the force transmission plate (8) is arranged in a "V" shape.

5. A high-precision one-way valve according to claim 1, characterized in that: A plurality of slots (41) are provided on one side of the valve core body (4), and the connecting rod (71) and the slots (41) are slidably plugged into each other.

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