Stable energy-saving three-section type hydraulic valve element structure

Abstract

The utility model discloses a stable energy-saving three-section type hydraulic valve element structure which comprises a valve seat, sealing groove plates are fixedly connected in the valve seat, a control cavity is formed between the sealing groove plates, a valve rod is arranged in the control cavity, a first valve element is arranged at one end of the valve rod, and a second valve element is arranged at the other end of the valve rod. A second valve element is arranged on one side of the middle of the valve rod, a third valve element is arranged on the other side of the valve rod, the first valve element, the second valve element and the third valve element are connected through connecting rods, and the connecting rods are fixedly connected with the valve rod. By arranging the valve rod, the oil way, the valve elements and the conical rubber blocks, when the oil way needs to be closed through the valve rod, the valve rod can be pushed to one end, at the moment, the first valve element, the second valve element and the third valve element abut against the conical rubber blocks, the valve seat is sealed and blocked, and the closing effect is completed; and the conical rubber block is additionally arranged to be matched with the sealing groove plate, so that the sealing stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-stage hydraulic valve cores, in particular to a stable and energy-saving three-stage hydraulic valve core structure. Background Art

[0002] In the field of industrial automation process control, the regulating valve is the final control element that changes process parameters such as medium flow and pressure by power operation by receiving the control signal output by the regulating control unit. It generally includes a valve body, a valve seat in the valve body, and a valve stem that cooperates with the valve seat to open and close.

[0003] Most of the hydraulic valve core structures in the existing technology are one-way valve core structures. For the connection of multiple pipelines, a multi-section valve core structure is required. However, the traditional valve core is an improvement on the valve stem and valve core during use, and the valve seat is used in conjunction with the valve stem. Therefore, for the stable flow of the oil circuit, the valve seat needs to have a strong sealing fit. Therefore, the traditional valve seat and valve core structure has a penetration problem, which affects the use effect. Utility Model Content

[0004] The purpose of the utility model is to provide a stable and energy-saving three-stage hydraulic valve core structure, in which the valve stem is pushed toward one end, and the first valve core, the second valve core and the third valve core are all blocked by the resistance of the conical rubber block to the valve seat to complete the closing effect. The three-stage valve core closing effect can be completed through this structure.

[0005] To achieve the above-mentioned purpose, a stable and energy-saving three-stage hydraulic valve core structure is provided, including: a valve seat, a sealing groove plate is fixedly connected to the interior of the valve seat, a control cavity is opened between the sealing groove plates, a valve stem is arranged inside the control cavity, a first valve core is arranged at one end of the valve stem, a second valve core is arranged on one side of the middle part of the valve stem, and a third valve core is arranged on the other side of the valve stem, the first valve core, the second valve core and the third valve core are all connected by a connecting rod, and the connecting rod and the valve stem are fixedly connected.

[0006] According to the stable and energy-saving three-stage hydraulic valve core structure, one side of the first valve core, the second valve core and the third valve core are all fixedly connected with a conical rubber block.

[0007] According to the stable and energy-saving three-stage hydraulic valve core structure, an oil circuit is opened inside the control chamber.

[0008] According to the stable and energy-saving three-stage hydraulic valve core structure, a plurality of oil inlet pipes are fixedly connected to one side of the top end of the valve seat.

[0009] According to the stable and energy-saving three-stage hydraulic valve core structure, a plurality of oil outlet pipes are fixedly connected to the bottom end of the valve seat.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The present utility model is provided with a valve stem, an oil passage, a valve core and a conical rubber block. When the valve stem is required to perform a closing operation on the oil passage, it can be pushed towards one end by the valve stem. At this time, the first valve core, the second valve core and the third valve core are all sealed and blocked against the valve seat through the resistance of the conical rubber block, completing the closing function. Through this structure, the three-stage valve core closing function can be completed, and by increasing the cooperation of the conical rubber block and the sealing groove plate, the sealing stability is increased.

[0012] 2. The present utility model is provided with a valve stem, an oil passage and a sealing groove plate. When the valve stem is retracted towards the other end, the oil passages at the ends of the first valve core, the second valve core and the third valve core are in an open state, and then cooperate with the sealing groove plate at the rear side to achieve a resistance and blocking effect, preventing the mixing of oil fluids and improving the use stability.

[0013] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0014] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0015] Figure 1 It is the front view of the cross-section of the valve seat of a stable and energy-saving three-stage hydraulic valve core structure of the present utility model;

[0016] Figure 2 It is the structure diagram of the valve stem and the three-stage valve core of a stable and energy-saving three-stage hydraulic valve core structure of the present utility model;

[0017] Figure 3 For the present utility model Figure 1 The enlarged view at A;

[0018] Figure 4 It is the front view of the cross-section of the control cavity structure of a stable and energy-saving three-stage hydraulic valve core structure of the present utility model.

[0019] In the figure: 1. Valve seat; 2. Sealing groove plate; 3. Valve stem; 4. First valve core; 5. Second valve core; 6. Third valve core; 7. Oil outlet pipe; 8. Oil passage; 9. Oil inlet pipe; 10. Control cavity; 11. Conical rubber block; 12. Connecting rod. Detailed Embodiment

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Please refer to Figures 1-4 , the present utility model provides a technical solution: a stable and energy-saving three-stage hydraulic valve core structure, which includes: a valve seat 1, a sealing groove plate 2 is fixedly connected inside the valve seat 1, the rear side of the valve core cooperates with the sealing groove plate 2 to achieve a blocking effect, prevent the mixing of oil fluid, and improve the use stability. A control cavity 10 is opened between the sealing groove plates 2. By moving the valve rod 3 inside the control cavity 10, the oil circuit 8 can be opened and closed. An oil circuit 8 is opened inside the control cavity 10, and a valve rod 3 is arranged inside the control cavity 10. Through the fixed connection between the valve rod 3 and the connecting rod 12, the first valve core 4, the second valve core 5, and the third valve core 6 can be fixed. One end of the valve rod 3 is provided with the first valve core 4, one side of the middle part of the valve rod 3 is provided with the second valve core 5, and the other side of the valve rod 3 is provided with the third valve core 6. The first valve core 4, the second valve core 5, and the third valve core 6 are all connected by a connecting rod 12, and the connecting rod 12 is fixedly connected to the valve rod 3.

[0023] A conical rubber block 11 is fixedly connected to one side of the first valve core 4, the second valve core 5 and the third valve core 6. When the valve rod 3 is used to close the oil circuit 8, the valve rod 3 can be pushed towards one end. At this time, the first valve core 4, the second valve core 5 and the third valve core 6 are all sealed and blocked against the valve seat 1 through the contact of the conical rubber block 11 to complete the closing function. A plurality of oil inlet pipes 9 are fixedly connected to one side of the top end of the valve seat 1, and the oil flow is completed through the oil inlet pipes 9 and the oil outlet pipes 7. A plurality of oil outlet pipes 7 are fixedly connected to the bottom end of the valve seat 1.

[0024] Working principle: When the valve rod 3 is used to close the oil circuit 8 during use, the valve rod 3 can be pushed towards one end. At this time, the first valve core 4, the second valve core 5 and the third valve core 6 are all sealed and blocked against the valve seat 1 through the contact of the conical rubber block 11 to complete the closing function. When the oil circuit 8 needs to be opened, the valve rod 3 is retracted towards the other end. At this time, the oil circuit 8 at the end of the first valve core 4, the second valve core 5 and the third valve core 6 is in an open state, and then it cooperates with the sealing groove plate 2 to achieve the contact and blocking function, preventing the mixing of oil and improving the use stability.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stable and energy-saving three-stage hydraulic valve core structure, comprising: Valve seat (1), characterized in that a sealing groove plate (2) is fixedly connected inside the valve seat (1), a control cavity (10) is provided between the sealing groove plates (2), a valve rod (3) is arranged inside the control cavity (10), a first valve core (4) is arranged at one end of the valve rod (3), a second valve core (5) is arranged on one side of the middle of the valve rod (3), a third valve core (6) is arranged on the other side of the valve rod (3), the first valve core (4), the second valve core (5) and the third valve core (6) are all connected by a connecting rod (12), and the connecting rod (12) is fixedly connected to the valve rod (3).

2. The stable and energy-saving three-stage hydraulic valve core structure according to claim 1, wherein: A conical rubber block (11) is fixedly connected to one side of each of the first valve core (4), the second valve core (5) and the third valve core (6).

3. A stable and energy-saving three-stage hydraulic valve core structure as described in claim 1, characterized in that: An oil passage (8) is provided inside the control cavity (10).

4. A stable and energy-saving three-stage hydraulic valve core structure according to claim 1, characterized in that: A plurality of oil inlet pipes (9) are fixedly connected to one side of the top end of the valve seat (1).

5. A stable and energy-saving three-stage hydraulic valve core structure according to claim 1, characterized in that: A plurality of oil outlet pipes (7) are fixedly connected to the bottom end of the valve seat (1).

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