A rotary hydraulic control one-position three-way valve

Abstract

This invention discloses a rotary hydraulically controlled one-position three-way valve, with the following structure: an upper valve body, a middle valve body, and a lower valve body are sequentially connected and assembled together using bolts and nuts via an integrated flange structure. A flange sealing ring is inserted in the middle of the flange structure to achieve sealing, forming the valve body. Two one-way hydraulic valves are installed on the upper valve body. A hydraulically controlled regulating valve core, composed of a hydraulically controlled annular piston, a rotary valve core, an angular contact bearing, a metal adjusting plate, and a rubber adjusting plate, is installed between the upper and lower valve bodies. Simultaneously, the hydraulically controlled annular piston enters the hydraulic groove of the upper valve body, forming a hydraulic chamber. Liquid is supplied or discharged into the hydraulic chamber by an external hydraulic pump, thereby driving the hydraulically controlled regulating valve core to rotate, thus regulating the outlet flow channel. The angular contact bearing is sleeved on the outside of the small end of the rotary valve core, and the metal adjusting plate and the rubber adjusting plate are sequentially installed at the rear of the inner cavity of the large end of the rotary valve core. This invention has a simple structure, strong adaptability, and is easy to manufacture, possessing certain practicality and advanced features.

Description

Technical Field

[0001] This invention belongs to the field of valve technology and relates to a rotary hydraulic control one-position three-way valve. Background Technology

[0002] Multi-way valves are widely used in liquid conveying or hydraulic systems of engineering machinery. Common multi-way valves both domestically and internationally are mainly electromagnetic spool valves, including single-position two-way valves, two-position two-way valves, and two-position three-way valves. Due to the gap between the valve core and the valve sleeve, leakage is prone to occur at high and low pressure points. Furthermore, the valve core is subject to pressure during prolonged sliding, which can lead to aging and leakage of the internal sealing structure, making them unsuitable for the transport and control of flammable, explosive, or other hazardous liquids. Additionally, current multi-way valve patents rarely involve single-position three-way valves, lacking valve technology that allows one inlet to connect three outlet channels while providing manual adjustment of the outlet channels. Summary of the Invention

[0003] (I) Purpose of the Invention

[0004] The purpose of this invention is to propose a rotary hydraulic control one-position three-way valve with a single inlet and three outlets. By connecting an external hydraulic pump, the hydraulic pressure in the hydraulic chamber inside the valve body is adjusted to drive the internal valve core to move, thereby realizing the selection and control of the three outlet flow channels, and at the same time, it has the function of manual adjustment of the outlet flow channels.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, the present invention provides a rotary hydraulically controlled one-position three-way valve, which includes an upper valve body 1, a middle valve body 2, a lower valve body 3, a hydraulically controlled annular piston 4, a rotary valve core 5, an angular contact bearing 6, a metal adjusting plate 7, a rubber adjusting plate 8, and a one-way hydraulic valve 9. The upper valve body 1, the middle valve body 2, and the lower valve body 3 are sequentially connected and installed together by bolts and nuts through their own flange structure. A flange sealing ring is inserted in the middle of the flange structure to achieve sealing, forming the valve body. Two one-way hydraulic valves 9 are installed on the upper valve body 1. The hydraulically controlled annular piston 4, the rotary valve core 5, the angular contact bearing 6, the metal adjusting plate 7, and the rubber adjusting plate 8 constitute the hydraulically controlled regulating valve core. When the hydraulically controlled regulating valve core is installed inside the valve body, it is installed between the upper valve body 1 and the lower valve body 2. Simultaneously, the hydraulically controlled annular piston 4 enters the hydraulic groove of the upper valve body 1, forming a hydraulic chamber. Liquid is delivered or discharged into the hydraulic chamber by an external hydraulic pump, thereby driving the hydraulically controlled regulating valve core to move, causing the internal rotary valve core 5 to rotate and thus regulating the outlet flow channel. The angular contact bearing 6 is sleeved on the outside of the small end of the rotary valve core 5. The metal regulating disc 7 and the rubber regulating disc 8 are sequentially installed in the rear part of the inner cavity of the large end of the rotary valve core 5. The upper valve body 1 and the lower valve body 2 squeeze the rubber regulating disc 8, causing it to undergo elastic deformation, thereby forming a dynamic seal between the contact surface of the rubber regulating disc 8 and the lower valve body 2. This ensures that the fluid inside the valve body can only flow out through the metal regulating hole 7-1 on the metal regulating disc 7 and the rubber regulating hole 8-1 on the rubber regulating disc 8, thus achieving the selection of the outflow channel.

[0007] (III) Beneficial Effects

[0008] The rotary hydraulically controlled one-position three-way valve provided by the above technical solution, compared with the prior art, mainly consists of an external valve body and an internal hydraulically controlled regulating valve core. Its overall size is smaller. The flow channel is connected via a hydraulically controlled outlet, and the annular hydraulic chamber reduces the hydraulic control space. The arc-shaped groove at the bottom of the hydraulically controlled annular piston enables the conversion between linear and rotary motion of the internal valve core, thereby reducing the internal valve core volume and significantly increasing the internal flow channel space of the valve body, thus improving flow efficiency. Simultaneously, this invention utilizes the regulating hydraulic pressure and the direct deformation contact of the rubber to achieve flow channel sealing at the regulating port, and uses a special shape to achieve the conversion between linear and rotary motion, thereby realizing a single inlet and three outlet flow channel selection function. Unlike solenoid valves, this invention adopts overall hydraulic control, requiring no power supply during operation, eliminating electrical safety hazards, and using hydraulic drive enhances its reliability. This invention has a simple structure, strong adaptability, and is easy to manufacture, possessing certain practicality and advanced features. Attached Figure Description

[0009] Figure 1 and Figure 2 These are the overall structure of the invention and a cross-sectional view (AA).

[0010] Figure 3 This is a structural diagram of the internal valve core of the present invention;

[0011] Figure 4-1 , 4-2 4-3 and 4-4 are respectively the front view, left view, right view and AA sectional view of the upper valve body structure of the present invention;

[0012] Figure 5-1 , 5-2 5-3 are the front view, top view, and AA sectional view of the valve body structure of the present invention, respectively;

[0013] Figure 6-1 , 6-2 6-3 are the front view, AA sectional view, and rear view of the lower valve body structure of the present invention, respectively;

[0014] Figure 7-1 , 7-2 These are, respectively, the front view and the side view of the hydraulically controlled annular piston structure of the present invention;

[0015] Figure 8-1 , 8-2 8-3 and 8-4 are respectively the front view, left view, right view, and AA sectional view of the rotary valve core structure of the present invention;

[0016] Figure 9-1 , 9-2 9-3 are the front view, side view, and AA sectional view of the metal adjustment disc structure of the present invention, respectively;

[0017] Figure 10-1 , 10-2 10-3 are the front view, side view, and AA sectional view of the rubber adjusting disc structure of the present invention, respectively. Detailed Implementation

[0018] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0019] Reference Figures 1 to 10-3As shown, this embodiment of the rotary hydraulically controlled one-position three-way valve includes an upper valve body 1, a middle valve body 2, a lower valve body 3, a hydraulically controlled annular piston 4, a rotary valve core 5, an angular contact bearing 6, a metal adjusting plate 7, a rubber adjusting plate 8, and a one-way hydraulic valve 9. The upper valve body 1, middle valve body 2, and lower valve body 3 are sequentially connected and installed together using bolts and nuts via their own flange structure. A flange sealing ring is inserted in the middle of the flange structure to achieve sealing, forming the valve body. Two one-way hydraulic valves 9 are installed on the upper valve body 1. The hydraulically controlled annular piston 4, rotary valve core 5, angular contact bearing 6, metal adjusting plate 7, and rubber adjusting plate 8 constitute the hydraulically controlled regulating valve core. When the hydraulically controlled regulating valve core is installed inside the valve body, it is installed between the upper valve body 1 and the lower valve body 2, and the hydraulically controlled annular piston 4, rotary valve core 5, angular contact bearing 6, metal adjusting plate 7, and rubber adjusting plate 8 are connected. The piston 4 enters the hydraulic groove of the upper valve body 1 to form a hydraulic chamber. Liquid is delivered or discharged into the hydraulic chamber by an external hydraulic pump, thereby driving the hydraulic control valve core to move, causing the internal rotary valve core 5 to rotate and thus adjusting the outlet flow channel. The angular contact bearing 6 is sleeved on the outside of the small end of the rotary valve core 5. The metal adjusting plate 7 and the rubber adjusting plate 8 are installed in sequence at the rear of the inner cavity of the large end of the rotary valve core 5. The upper valve body 1 and the lower valve body 2 squeeze the rubber adjusting plate 8, causing it to undergo elastic deformation, so that the contact surface between the rubber adjusting plate 8 and the lower valve body 2 forms a dynamic seal, ensuring that the fluid inside the valve body can only flow out through the metal adjusting hole 7-1 on the metal adjusting plate 7 and the rubber adjusting hole 8-1 on the rubber adjusting plate 8, thereby achieving the selection of the outflow channel.

[0020] The upper valve body 1 is provided with a one-way valve threaded hole 1-1, a bearing mounting seat 1-2, a hydraulic groove 1-3, and a main flow channel mounting threaded hole 1-4. There are two one-way valve threaded holes 1-1, symmetrically arranged on the flange ring on the outer wall of the front end of the upper valve body 1. The internal threads are used to install one-way hydraulic valves 9, and a total of two one-way hydraulic valves 9 are installed, which are connected to different external hydraulic pumps to realize the delivery or discharge of liquid in the hydraulic groove 1-3 in the upper valve body 1. The bearing mounting seat 1-2 is located at the front end of the inner wall of the upper valve body 1 and is used to install angular contact bearings 6. The outer ring of the angular contact bearing 6 is installed in the bearing mounting seat 1-2, and the inner ring is used to install the rotary valve core 5 to reduce the direct contact friction between the upper valve body 1 and the rotary valve core 5. The hydraulic groove 1-3 of the upper valve body 1 is opened between the inner and outer walls of the upper valve body 1 and is used to install the hydraulically controlled annular piston 4. The main flow channel mounting threaded hole 1-4 is opened at the rear end of the upper valve body 1 and is used to install the main flow channel pipe, which serves as the fluid inlet pipe.

[0021] The inner wall of the valve body 2 is provided with multiple evenly spaced sliding positioning grooves 2-1 along the circumference, which cooperate with the sliding positioning block 4-2 in the middle of the outer wall of the hydraulic control annular piston 4 to restrict the movement of the hydraulic control annular piston 4, so that it can only move in a straight line along the sliding positioning grooves 2-1.

[0022] The lower valve body 3 is provided with a first-channel threaded hole 3-1, a second-channel threaded hole 3-2, and a third-channel threaded hole 3-3, which are used to install the first-channel outlet pipe, the second-channel outlet pipe, and the third-channel outlet pipe, respectively. The first-channel threaded hole 3-1, the second-channel threaded hole 3-2, and the third-channel threaded hole 3-3 are arranged in parallel axial directions.

[0023] The hydraulically controlled annular piston 4 has an annular sealing groove 4-1 on one end of its outer wall and a rotating groove 4-3 on the other end of its outer wall. The sealing groove 4-1 is used to install a sealing ring and forms a hydraulic chamber with the hydraulic groove 1-3. The rotating groove 4-3 is located at the bottom of the hydraulically controlled annular piston 4 and cooperates with the rotating head 5-2 of the rotary valve core 5. When the hydraulically controlled annular piston 4 moves in a straight line, it drives the rotary valve core 5 to rotate along the rotating groove 4-3.

[0024] A sealing groove 5-1 is provided on the outer wall of the small end of the rotary valve core 5, a bearing platform 5-3 is provided at the connection between the small end and the large end, and a fixing groove 5-4 is provided in the inner wall of the large end; the sealing groove 5-1 is used to install a sealing ring to achieve a seal between the rotary valve core 5 and the inner wall of the flow channel of the upper valve body 1; the small end of the rotary valve core 5 is installed at the inner ring of the angular contact bearing 6 and is supported by the bearing platform 5-3 against the inner ring wall of the angular contact bearing 6; the fixing groove 5-4 cooperates with the metal fixing block 7-3 and the rubber fixing block 8-2 to install the metal adjusting plate 7 and the rubber adjusting plate 8.

[0025] The metal adjusting disc 7 has an eccentrically oriented metal adjusting hole 7-1 along the axial direction, a sealing groove 7-2 on one end of its outer wall, and multiple threaded connection holes 7-4 on the other end face. The metal adjusting hole 7-1 is used to select the outlet flow channel. The sealing groove 7-2 is used to install a sealing ring and cooperates with the inner wall of the rotary valve core 5 to achieve a seal. The threaded connection holes 7-4 are used to install a rubber adjusting disc 8 via countersunk bolts.

[0026] The rubber adjusting plate 8 is provided with a rubber adjusting hole 8-1 and a plurality of countersunk holes 8-3 eccentrically opened along the axial direction. The rubber adjusting hole 8-1 and the metal adjusting hole 7-1 are concentric after the metal adjusting plate 7 and the rubber adjusting plate 8 are installed. The countersunk hole 8-3 is used to install countersunk bolts, and the metal adjusting plate 7 and the rubber adjusting plate 8 are connected through the threaded connection hole 7-4.

[0027] In use, the rotary hydraulic control one-position three-way valve of the present invention injects or discharges liquid into the hydraulic chamber between the valve body 1 and the hydraulic control annular piston 4 through a one-way hydraulic valve 9 via an externally connected hydraulic pump source, thereby pushing or pulling back the hydraulic control annular piston 4; while the hydraulic control annular piston 4 moves along the sliding positioning groove 2-1 of the middle valve body 2, it drives the rotary valve core 5 to rotate, and at the same time drives the connected metal adjusting plate 7 and rubber adjusting plate 8 to rotate, thereby realizing the connection of different outlet flow channels according to the position of the metal adjusting hole 7-1 and the rubber adjusting hole 8-1.

[0028] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rotary pilot operated one-way three-way valve, characterized by, The utility model relates to a valve body, and it comprises an upper valve body (1), a middle valve body (2), a lower valve body (3), a hydraulic control annular piston (4), a rotary valve core (5), an angular contact bearing (6), a metal adjusting disc (7), a rubber adjusting disc (8) and a one-way hydraulic valve (9), the upper valve body (1), the middle valve body (2) and the lower valve body (3) are sequentially butted, are installed together through the flange structure with bolt and nut, the flange structure is sealed by inserting a flange sealing ring in the middle, and the valve body is formed, two one-way hydraulic valves (9) are installed on the upper valve body (1), the hydraulic control annular piston (4), the rotary valve core (5), the angular contact bearing (6), the metal adjusting disc (7) and the rubber adjusting disc (8) constitute a hydraulic control adjusting valve core, when the hydraulic control adjusting valve core is integrally installed in the valve body, is installed between the upper valve body (1) and the lower valve body (3), and the hydraulic control annular piston (4) enters the hydraulic groove inside the upper valve body (1), forms a hydraulic chamber, and the liquid in the hydraulic chamber is transported or discharged by an external hydraulic pump, thereby driving the hydraulic control adjusting valve core to move, so that the rotary valve core (5) rotates and the outlet flow channel is adjusted, the angular contact bearing (6) is sleeved on the small end outside of the rotary valve core (5), the metal adjusting disc (7) and the rubber adjusting disc (8) are sequentially installed in the rear part of the large end inner cavity of the rotary valve core (5), the upper valve body (1) and the lower valve body (3) extrude the rubber adjusting disc (8), so that the rubber adjusting disc (8) is elastically deformed, dynamic sealing is formed between the rubber adjusting disc (8) and the contact surface of the lower valve body (3), the fluid in the valve body can only flow out through the metal adjusting hole (7-1) on the metal adjusting disc (7) and the rubber adjusting hole (8-1) on the rubber adjusting disc (8), thereby realizing the selection of the outlet flow channel; The upper valve body (1) is provided with a one-way valve threaded hole (1-1), a bearing mounting seat (1-2), a hydraulic groove (1-3) and a main flow channel mounting threaded hole (1-4), the hydraulic groove (1-3) of the upper valve body (1) is arranged between the inner wall and the outer wall of the upper valve body (1), the main flow channel mounting threaded hole (1-4) is arranged at the rear end of the upper valve body (1), a main flow channel pipe is mounted through threads, and the main flow channel pipe serves as a fluid inlet pipeline; A plurality of sliding positioning grooves (2-1) are circumferentially arranged on the inner wall of the middle valve body (2) and are uniformly spaced, and the sliding positioning grooves (2-1) are matched with the sliding positioning block (4-2) in the middle part of the outer wall of the hydraulic control annular piston (4), so as to limit the linear motion of the hydraulic control annular piston (4) along the sliding positioning grooves (2-1); The lower valve body (3) is provided with a flow channel threaded hole (3-1), a second flow channel threaded hole (3-2) and a third flow channel threaded hole (3-3), which are used for mounting a first flow channel outlet pipe, a second flow channel outlet pipe and a third flow channel outlet pipe respectively. The liquid control ring piston (4) is provided with a ring-shaped sealing groove (4-1) on one end of the outer wall, and a rotating groove (4-3) on the other end of the outer wall; the ring-shaped sealing groove (4-1) is used for installing a sealing ring and forms a hydraulic cavity with the hydraulic groove (1-3); the rotating groove (4-3) is arranged at the bottom of the liquid control ring piston (4) and cooperates with the rotating head (5-2) of the rotating valve core (5), and the liquid control ring piston (4) drives the rotating valve core (5) to rotate along the rotating groove (4-3) when the liquid control ring piston (4) moves linearly.

2. The rotary pilot operated one-way three-way valve according to claim 1, wherein The one-way valve threaded holes (1-1) are two and symmetrically arranged on the flange ring on the outer wall of the front end of the upper valve body (1), and are internally threaded to connect and install one-way hydraulic valves (9), and two one-way hydraulic valves (9) are installed, which are respectively connected with different external hydraulic pumps and are used for conveying or discharging liquid into the hydraulic groove (1-3) in the upper valve body (1); the bearing mounting seat (1-2) is located at the front end of the inner wall of the upper valve body (1) and is used for installing an angular contact bearing (6), and the outer ring of the angular contact bearing (6) is mounted in the bearing mounting seat (1-2), and the inner ring is used for installing the rotating valve core (5).

3. The rotary pilot operated one-way three-way valve according to claim 2, wherein The first flow channel threaded hole (3-1), the second flow channel threaded hole (3-2) and the third flow channel threaded hole (3-3) are axially parallel.

4. The rotary pilot operated one-way three-way valve according to claim 3, wherein The rotating valve core (5) is provided with a sealing groove (5-1) on the outer wall of the small end, a bearing platform (5-3) is arranged at the connection between the small end and the large end, and a fixing groove (5-4) is arranged on the inner wall of the large end; the sealing groove (5-1) is used for installing a sealing ring to realize the sealing between the rotating valve core (5) and the inner wall of the flow channel of the upper valve body (1); the small end of the rotating valve core (5) is mounted at the inner ring of the angular contact bearing (6) and abuts against the inner ring wall of the angular contact bearing (6) through the bearing platform (5-3); the fixing groove (5-4) cooperates with the metal fixing block (7-3) and the rubber fixing block (8-2) to install the metal adjusting disc (7) and the rubber adjusting disc (8).

5. The rotary pilot operated one-way three-way valve according to claim 4, wherein The metal adjusting disc (7) is provided with a metal adjusting hole (7-1) which is eccentrically arranged on the outer wall of one end along the axial direction, a sealing groove (7-2) which is arranged on the outer wall of one end, and a plurality of threaded connection holes (7-4) which are arranged on the end face of the other end; the metal adjusting hole (7-1) is used for realizing the selection of the outlet flow channel; the sealing groove (7-2) is used for installing a sealing ring and realizing the sealing in cooperation with the inner wall of the rotating valve core (5); the threaded connection holes (7-4) are used for installing the rubber adjusting disc (8) through the counter sunk bolts.

6. The rotary pilot operated one-way three-way valve according to claim 5, wherein The rubber adjusting disc (8) is provided with a rubber adjusting hole (8-1) which is eccentrically arranged on the axial direction, and a plurality of counter sunk holes (8-3); the rubber adjusting hole (8-1) and the metal adjusting hole (7-1) have the concentric feature after the installation of the metal adjusting disc (7) and the rubber adjusting disc (8); the counter sunk holes (8-3) are used for installing the counter sunk bolts to realize the connection between the metal adjusting disc (7) and the rubber adjusting disc (8) through the threaded connection holes (7-4).

7. A hydraulic system characterized by, The rotating liquid control type one-way three-way valve. The rotating liquid control type one-way three-way valve.

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