Reducing structure for hydraulic valve

Abstract

The reducing structure for the hydraulic valve comprises a valve body and a reducing seat, the reducing seat is located on the right side of the valve body, connecting internal threads are arranged on the periphery of the right side of the inner cavity wall of the valve body, a mounting head is fixedly connected to the left side wall of the valve body, and the mounting head is fixedly connected to the right side wall of the valve body. A limiting ring is fixedly connected to the periphery of the left side of the outer side wall of the mounting head, a sealing ring adheres to the periphery of the right side wall of the limiting ring, and a fixing nut is connected to the position, located on the right side of the limiting ring, of the outer side wall of the mounting head in a sleeving mode; the variable-diameter structure for the hydraulic valve has the advantages that the variable-diameter structure is reasonable in structural design, the applicability of the hydraulic valve can be improved, and the problem that pipelines cannot be matched with one another can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a diameter-changing structure for a hydraulic valve. Background Technique

[0002] A hydraulic valve is an automatic component operated by pressure oil. It is controlled by the pressure oil of a distribution valve and is usually used in combination with an electromagnetic distribution valve. It can be used to remotely control the on-off of the oil, gas, and water pipeline systems of a hydropower station and is commonly used in oil circuits such as clamping, control, and lubrication. It is divided into direct-acting type and pilot type, and the pilot type is mostly used. It can be divided into manual, electric control, and hydraulic control according to the control method.

[0003] After the existing hydraulic valve is installed, it needs to be connected to the oil pipeline used. However, the existing pipeline sizes are different, and the existing connectors cannot be directly connected to the hydraulic valve. Moreover, the sizes of the existing connectors on the market are fixed, and the pipelines to be connected cannot be matched, resulting in low applicability. Therefore, non-standard diameter-changing connectors need to be customized and produced. For this reason, we have proposed a diameter-changing structure for a hydraulic valve. Content of the Utility Model

[0004] The purpose of the utility model is to provide a diameter-changing structure for a hydraulic valve to solve the problems in the above-mentioned background technique that the sizes of the existing connectors on the market are fixed, the applicability is low, and the pipelines to be connected cannot be matched.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A diameter-changing structure for a hydraulic valve, including a valve body and a diameter-changing seat. The diameter-changing seat is located on the right side of the valve body. A connecting internal thread is opened on the right side of the inner cavity wall of the valve body in a circle. The left side wall of the valve body is fixedly connected with a mounting head. A limiting ring is fixedly connected to the left side of the outer side wall of the mounting head in a circle. A sealing ring is adhesively connected to the right side wall of the limiting ring in a circle. A fixing nut is sleeved on the outer side wall of the mounting head and on the right side of the limiting ring. A diameter-changing head is integrally formed on the left side wall of the diameter-changing seat. A diameter-changing external thread is opened on the outer side wall of the diameter-changing head. A diameter-changing internal thread is opened on the right side of the inner cavity wall of the diameter-changing seat in a circle.

[0006] As a further description of the above technical solution:

[0007] A connecting rod is rotatably connected to the middle of the top of the valve body, and the bottom end of the connecting rod penetrates through the valve body and extends into the inner cavity of the valve body.

[0008] As a further description of the above technical solution:

[0009] The bottom end of the connecting rod is fixedly connected with a sealing ball, and the outer side wall of the sealing ball is closely attached to the inner cavity wall of the valve body. A through hole is opened on the right side wall of the sealing ball.

[0010] As a further description of the above technical solution:

[0011] An opening and closing rod is fixedly connected to the upper side of the outer side wall of the connecting rod.

[0012] As a further description of the above technical solution:

[0013] The outer diameter of the variable-diameter external thread is 47-49 mm, and the inner diameter of the connecting internal thread is 47-49 mm. And the variable-diameter external thread is screwed with the connecting internal thread, and the inner diameter of the variable-diameter internal thread is 41-43 mm.

[0014] As a further description of the above technical solution:

[0015] The sealing ring is made of nitrile rubber material.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: For the variable-diameter structure for a hydraulic valve, through the connecting internal thread provided inside the valve body, the variable-diameter external thread on the variable-diameter head is screwed with the connecting internal thread. At the same time, a variable-diameter internal thread is provided inside the variable-diameter seat, and the variable-diameter internal thread is connected to the connecting head of the pipeline to perform variable-diameter connection on the pipeline, thereby improving the applicability of the hydraulic valve and solving the problem of pipeline mismatch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is an overall structural schematic diagram of a variable-diameter structure for a hydraulic valve proposed by the present utility model;

[0018] Figure 2 FIG. 2 is a front cross-sectional structural schematic diagram of a variable-diameter structure for a hydraulic valve proposed by the present utility model;

[0019] Figure 3 FIG. 3 is a three-dimensional structural schematic diagram of a variable-diameter seat of a variable-diameter structure for a hydraulic valve proposed by the present utility model;

[0020] Figure 4 FIG. 4 is a Figure 2 magnified structural schematic diagram at A in a variable-diameter structure for a hydraulic valve proposed by the present utility model.

[0021] In the figure: 100, valve body; 110, connecting internal thread; 120, mounting head; 121, limiting ring; 122, sealing ring; 130, fixing nut; 140, connecting rod; 141, sealing ball; 142, through hole; 150, opening and closing rod; 200, variable-diameter seat; 210, variable-diameter head; 211, variable-diameter external thread; 220, variable-diameter internal thread. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the 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 therefore should not be construed as a limitation of the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may 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.

[0025] The present utility model provides a reduced-diameter structure for a hydraulic valve, which can improve the applicability of the hydraulic valve and solve the problem of pipeline mismatch. Please refer to Figures 1-4 , which includes a valve body 100 and a reduced-diameter seat 200;

[0026] Please refer to again Figures 1-4, on the right side of the inner cavity wall of the valve body 100, a connecting internal thread 110 is provided around. On the left side wall of the valve body 100, a mounting head 120 is fixedly connected. On the left side of the outer wall of the mounting head 120, a limiting ring 121 is fixedly connected around. On the right side wall of the limiting ring 121, a sealing ring 122 is adhesively bonded. On the outer wall of the mounting head 120 and on the right side of the limiting ring 121, a fixing nut 130 is sleeved. In the middle of the top of the valve body 100, a connecting rod 140 is rotatably connected, and the bottom end of the connecting rod 140 penetrates through the valve body 100 and extends into the inner cavity of the valve body 100. At the bottom end of the connecting rod 140, a sealing ball 141 is fixedly connected, and the outer wall of the sealing ball 141 is closely attached to the inner cavity wall of the valve body 100. On the right side wall of the sealing ball 141, a through hole 142 is provided. On the upper side of the outer wall of the connecting rod 140, an opening and closing rod 150 is fixedly connected. The sealing ring 122 is made of nitrile rubber material;

[0027] Please refer to again Figures 1-4 , the reducing seat 200 is located on the right side of the valve body 100. On the left side wall of the reducing seat 200, a reducing head 210 is integrally formed. On the outer wall of the reducing head 210, a reducing external thread 211 is provided. On the right side of the inner cavity wall of the reducing seat 200, a reducing internal thread 220 is provided. The outer diameter size of the reducing external thread 211 and the inner diameter size of the connecting internal thread 110 are 47 - 49 mm, and the reducing external thread 211 is screwed with the connecting internal thread 110. The inner diameter size of the reducing internal thread 220 is 41 - 43 mm. Through the connecting internal thread 110 provided inside the valve body 100, the reducing external thread 211 on the reducing head 210 is screwed with the connecting internal thread 110. At the same time, a reducing internal thread 220 is provided inside the reducing seat 200, and through the reducing internal thread 220, it is connected with the connecting head of the pipeline to perform a reducing connection on the pipeline.

[0028] In summary, it can improve the applicability of the hydraulic valve and solve the problem of pipeline mismatch.

[0029] During specific use, when personnel in the technical field connect the pipeline with the hydraulic valve, it is connected with the equipment through the mounting head 120, and the fixing nut 130 is rotated to be connected with the equipment. While the fixing nut 130 rotates, it squeezes the sealing ring 122, and the sealing ring 122 contacts the limiting ring 121 to seal between the mounting head 120 and the equipment. After the installation is completed, after winding the external thread sealing tape around the reducing head 210, the reducing seat 200 is rotated so that the connecting internal thread 110 is screwed with the reducing external thread 211 on the reducing head 210 to install the reducing seat 200. After the installation is completed, after winding the external thread sealing tape around the connecting head of the pipeline, the pipeline connecting head is rotated and screwed into the inside of the reducing seat 200 to be screwed with the reducing internal thread 220, thus completing the reducing connection installation of the pipeline.

[0030] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A variable diameter structure for a hydraulic valve, characterized in that: The invention comprises a valve body (100) and a reducer seat (200), wherein the reducer seat (200) is located on the right side of the valve body (100), a connecting inner thread (110) is opened around the right side of the inner cavity wall of the valve body (100), a mounting head (120) is fixedly connected to the left side wall of the valve body (100), a limiting ring (121) is fixedly connected to the left side of the outer wall of the mounting head (120), a sealing ring (122) is bonded to the right side wall of the limiting ring (121), a fixing nut (130) is sleeved on the outer wall of the mounting head (120) and located on the right side of the limiting ring (121), a reducer head (210) is integrally formed on the left side wall of the reducer seat (200), a reducing outer thread (211) is opened on the outer wall of the reducing head (210), and a reducing inner thread (220) is opened around the right side of the inner cavity wall of the reducer seat (200).

2. A variable diameter structure for a hydraulic valve according to claim 1, characterized in that: A connecting rod (140) is rotatably connected to the middle of the top of the valve body (100), and the bottom end of the connecting rod (140) passes through the valve body (100) and extends to the inner cavity of the valve body (100).

3. A variable diameter structure for a hydraulic valve according to claim 2, characterized in that: A sealing ball (141) is fixedly connected to the bottom end of the connecting rod (140), and the outer wall of the sealing ball (141) is tightly fitted with the inner wall of the valve body (100), and a through hole (142) is opened on the right side wall of the sealing ball (141).

4. A variable diameter structure for a hydraulic valve according to claim 3, characterized in that: An opening and closing rod (150) is fixedly connected to the upper side of the outer side wall of the connecting rod (140).

5. The variable diameter structure for a hydraulic valve according to claim 1, characterized in that: The outer diameter of the reduced diameter outer thread (211) and the inner diameter of the connecting inner thread (110) are 47-49 mm, and the reduced diameter outer thread (211) and the connecting inner thread (110) are threadedly connected, and the inner diameter of the reduced diameter inner thread (220) is 41-43 mm.

6. The variable diameter structure for a hydraulic valve according to claim 1, characterized in that: The sealing ring (122) is made of nitrile rubber.

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