Rotary hydraulic control type one-position three-way valve

Abstract

The invention discloses a rotary hydraulic control type one-position three-way valve which is structurally characterized in that an upper valve body, a middle valve body and a lower valve body are in butt joint in sequence and are mounted together by using bolts and nuts through flange structures of the upper valve body, the middle valve body and the lower valve body, and a flange sealing ring is inserted into the middle of each flange structure to realize sealing to form a valve body; two one-way hydraulic valves are mounted on the upper valve body; the hydraulic control annular piston, the rotary valve element, the angular contact bearing, the metal adjusting disc and the rubber adjusting disc form a hydraulic control adjusting valve element which is installed between the upper valve body and the lower valve body, and meanwhile the hydraulic control annular piston enters a hydraulic groove of the upper valve body to form a hydraulic cavity. Liquid is conveyed into or discharged out of the hydraulic cavity through an external hydraulic pump to drive the hydraulic control regulating valve element to move, so that the internal rotary valve element rotates to adjust the outlet flow channel. The angular contact bearing is sleeved outside the small end of the rotary valve core, and the metal adjusting disc and the rubber adjusting disc are sequentially installed on the rear portion of an inner cavity of the large end of the rotary valve core. The device is simple in structure, high in adaptability and convenient to manufacture, and has certain practicability and advancement.

Description

Technical Field

[0001] The invention belongs to the technical field of valves and relates to a rotary hydraulically controlled one-position three-way valve. Background Art

[0002] Multi-way valves are widely used in liquid transportation or hydraulic systems of engineering machinery. Common multi-way valves at home and abroad are mainly electromagnetic slide valves, including one-position two-way valves, two-position two-way valves, two-position three-way valves, etc. Due to the certain gap between the valve core and the valve sleeve, it is easy to leak at high and low pressures. At the same time, due to the long-term sliding pressure of the valve core, the internal sealing structure of the valve core is prone to aging and leakage, and other dangerous factors, it is not suitable for the transportation control of flammable and explosive dangerous liquids. At the same time, among the current multi-way valve patents, there are few patents involving one-position three-way valves, and there is a lack of valve technology that can achieve the connection of three outlet flow channels from one inlet and have the function of manually controlling the outlet flow channel. Summary of the invention

[0003] (I) Purpose of the invention

[0004] The purpose of the present invention is to propose a rotary hydraulically controlled one-position three-way valve, which has a single inlet and three outlets. By means of an external hydraulic pump, the hydraulic pressure in the hydraulic cavity of 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 having the function of manual regulation of the outlet flow channels.

[0005] (II) Technical solution

[0006] In order to solve the above 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 disk 7, a rubber adjusting disk 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 connected in sequence and installed together with bolts and nuts through their own flange structure, and a flange sealing ring is inserted in the middle of the flange structure to achieve sealing, so as to form a 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 disk 7 and the rubber adjusting disk 8 constitute a hydraulically controlled regulating valve core, and when the hydraulically controlled regulating valve core is installed as a whole into the valve body, it is installed between the upper valve body 1 and the lower valve body 2. At the same time, the hydraulically controlled annular piston 4 enters the hydraulic groove of the upper valve body 1 to form a hydraulic cavity, and the liquid is transported or discharged into the hydraulic cavity by an external hydraulic pump to drive the hydraulically controlled regulating valve core to move, so that the internal rotating valve core 5 rotates to adjust the outlet flow channel; the angular contact bearing 6 is sleeved on the outside of the small end of the rotating valve core 5, and the metal adjusting disk 7 and the rubber adjusting disk 8 are sequentially installed at the rear of the inner cavity of the large end of the rotating valve core 5; the upper valve body 1 and the lower valve body 2 squeeze the rubber adjusting disk 8 to make it elastically deform, so that the contact surface of the rubber adjusting disk 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 disk 7 and the rubber adjusting hole 8-1 on the rubber adjusting disk 8, thereby realizing the selection of the outflow flow channel.

[0007] (III) Beneficial effects

[0008] Compared with the prior art, the rotary hydraulically controlled one-position three-way valve provided by the above technical solution is mainly composed of an external valve body and an internal hydraulically controlled regulating valve core, with a relatively small overall size. The flow channel is connected through a hydraulically regulated outlet, and the hydraulic control space is reduced by using an annular hydraulic cavity. The arc groove at the bottom of the hydraulically controlled annular piston is used to realize the conversion between the linear motion and the rotary motion of the internal valve core, thereby reducing the volume of the internal valve core, greatly increasing the flow channel space inside the valve body, and improving the circulation efficiency. At the same time, the present invention realizes the flow channel sealing of the regulating port by using the regulating hydraulic pressure and the direct deformation contact of the rubber, and realizes the conversion between the linear motion and the rotary motion by using a special shape, thereby realizing the flow channel selection function of a single inlet and three outlets; the present invention is different from the solenoid valve in that the whole adopts hydraulic control, no power supply is required during operation, there is no safety hazard of electricity use, and the reliability is stronger by using hydraulic drive. The present invention has a simple structure, strong adaptability, and is easy to manufacture, and has certain practicality and advancement. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 and Figure 2 They are the overall structure of the present invention and the AA cross-sectional view;

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

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

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

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

[0014] Figure 7-1 , 7-2 They are respectively a front view and a 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 a front view, a left view, a right view and an AA cross-sectional view of the rotary valve core structure of the present invention;

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

[0017] Figure 10-1 , 10-2 , 10-3 are respectively the front view, side view and AA cross-sectional view of the rubber adjustment disk structure of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0019] Reference Figure 1 to Figure 10-3As shown, the rotary hydraulically controlled one-position three-way valve of this embodiment comprises 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 disk 7, a rubber adjusting disk 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 connected in sequence and assembled together by bolts and nuts through a flange structure provided therewith, and a flange sealing ring is inserted in the middle of the flange structure to achieve sealing, thereby forming a valve body; two one-way hydraulic valves 9 are mounted 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 disk 7 and the rubber adjusting disk 8 constitute a hydraulically controlled regulating valve core, and when the hydraulically controlled regulating valve core is installed in the interior of the valve body as a whole, it is installed between the upper valve body 1 and the lower valve body 2, and the hydraulically controlled annular piston 4, the rotary valve core 5, the angular contact bearing 6, the metal adjusting disk 7 and the rubber adjusting disk 8 The angular piston 4 enters the hydraulic groove of the upper valve body 1 to form a hydraulic cavity, and the liquid is transported or discharged into the hydraulic cavity by an external hydraulic pump to drive the hydraulic control regulating valve core to move, so that the internal rotating valve core 5 rotates to adjust the outlet flow channel; the angular contact bearing 6 is sleeved on the outside of the small end of the rotating valve core 5, and the metal adjusting disk 7 and the rubber adjusting disk 8 are installed in sequence at the rear of the inner cavity of the large end of the rotating valve core 5; the upper valve body 1 and the lower valve body 2 squeeze the rubber adjusting disk 8 to make it elastically deform, so that the contact surface of the rubber adjusting disk 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 disk 7 and the rubber adjusting hole 8-1 on the rubber adjusting disk 8, thereby realizing the selection of the outflow flow 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, which are symmetrically arranged on the flange ring of the outer wall at the front end of the upper valve body 1, and the inner thread is connected to install a one-way hydraulic valve 9. A total of two one-way hydraulic valves 9 are installed, which are respectively 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 an angular contact bearing 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 a rotating valve core 5 to reduce the direct contact friction between the upper valve body 1 and the rotating 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 a 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 the main flow channel pipe is installed through the thread, and the main flow channel pipe serves as a fluid inlet pipe.

[0021] The inner wall of the middle valve body 2 is provided with a plurality of sliding positioning grooves 2-1 arranged at even intervals along the circumferential direction, which cooperate with the sliding positioning block 4-2 in the middle of the outer wall of the hydraulically controlled annular piston 4 to limit the movement of the hydraulically controlled annular piston 4 so that it can only move linearly along the sliding positioning groove 2-1.

[0022] The lower valve body 3 is provided with a first 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 to install the first flow channel outlet pipe, the second flow channel outlet pipe and the third flow channel outlet pipe respectively. 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 arranged axially in parallel.

[0023] An annular sealing groove 4-1 is provided on the outer wall at one end of the hydraulically controlled annular piston 4, and a rotating groove 4-3 is provided on the outer wall at the other end; the sealing groove 4-1 is used to install 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 hydraulically controlled annular piston 4, and cooperates with the rotating head 5-2 of the rotating valve core 5. When the hydraulically controlled annular piston 4 makes a linear motion, it drives the rotating 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 stand 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 large end wall; the sealing groove 5-1 is used to install a sealing ring to achieve sealing 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 on the inner ring of the angular contact bearing 6 and supports the inner ring wall of the angular contact bearing 6 through the bearing stand 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 disk 7 and the rubber adjusting disk 8.

[0025] The metal adjusting disk 7 is provided with a metal adjusting hole 7-1 eccentrically along the axial direction, a sealing groove 7-2 is provided on the outer wall at one end, and a plurality of threaded connection holes 7-4 are provided on the end surface at 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 cooperates with the inner wall of the rotating valve core 5 to realize sealing; the threaded connection hole 7-4 is used to install the rubber adjusting disk 8 via a countersunk bolt.

[0026] The rubber adjustment disk 8 is eccentrically provided with a rubber adjustment hole 8-1 and a plurality of countersunk holes 8-3 along the axial direction. The rubber adjustment hole 8-1 and the metal adjustment hole 7-1 have a concentric feature after the metal adjustment disk 7 and the rubber adjustment disk 8 are installed; the countersunk hole 8-3 is used to install a countersunk bolt, and the connection between the metal adjustment disk 7 and the rubber adjustment disk 8 is realized through the threaded connection hole 7-4.

[0027] When the rotary hydraulically controlled one-position three-way valve of the present invention is in use, liquid is injected or discharged into the hydraulic cavity between the upper valve body 1 and the hydraulically controlled annular piston 4 through the one-way hydraulic valve 9 through an externally connected hydraulic pump source, thereby pushing or withdrawing the hydraulically controlled annular piston 4; while the hydraulically controlled annular piston 4 moves along the sliding positioning groove 2-1 of the middle valve body 2, the rotary valve core 5 is driven to rotate, and at the same time, the connected metal adjusting disk 7 and the rubber adjusting disk 8 are driven to rotate, thereby realizing the connection of different outlet flow channels according to the positions of the metal adjusting hole 7-1 and the rubber adjusting hole 8-1.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rotary hydraulically controlled one-position three-way valve, characterized in that: The invention comprises an upper valve body (1), a middle valve body (2), a lower valve body (3), a hydraulically controlled annular piston (4), a rotating valve core (5), an angular contact bearing (6), a metal regulating disk (7), a rubber regulating disk (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 connected in sequence and assembled together by bolts and nuts through a flange structure provided therewith, and a flange sealing ring is inserted in the middle of the flange structure to achieve sealing, thereby forming a valve body; two one-way hydraulic valves (9) are mounted on the upper valve body (1); the hydraulically controlled annular piston (4), the rotating valve core (5), the angular contact bearing (6), the metal regulating disk (7), and the rubber regulating disk (8) form a hydraulically controlled regulating valve core, and when the hydraulically controlled regulating valve core is installed in the valve body as a whole, it is installed between the upper valve body (1) and the lower valve body (3), and at the same time, the hydraulically controlled annular piston ( 4) enters the hydraulic groove of the upper valve body (1) to form a hydraulic cavity, and the external hydraulic pump is used to transport or discharge liquid into the hydraulic cavity to drive the hydraulic control regulating valve core to move, so that the internal rotating valve core (5) rotates to adjust the outlet flow channel; the angular contact bearing (6) is sleeved on the outside of the small end of the rotating valve core (5), and the metal regulating disk (7) and the rubber regulating disk (8) are installed in sequence at the rear of the large end inner cavity of the rotating valve core (5); the upper valve body (1) and the lower valve body (3) squeeze the rubber regulating disk (8) to cause it to deform elastically, so that the contact surface of the rubber regulating disk (8) and the lower valve body (3) forms a dynamic seal, ensuring that the fluid inside the valve body can only flow out through the metal regulating hole (7-1) on the metal regulating disk (7) and the rubber regulating hole (8-1) on the rubber regulating disk (8), thereby realizing the selection of the outflow flow channel.

2. The rotary hydraulically controlled one-position three-way valve according to claim 1, characterized in that: 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 channel mounting threaded hole (1-4); there are two one-way valve threaded holes (1-1), which are symmetrically arranged on the flange ring on the outer wall of the front end of the upper valve body (1), and the internal threads are connected to install a one-way hydraulic valve (9). Two one-way hydraulic valves (9) are installed in total, which are respectively 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 The mounting seat (1-2) is located at the front end of the inner wall of the upper valve body (1) and is used to mount an angular contact bearing (6). The outer ring of the angular contact bearing (6) is mounted in the bearing mounting seat (1-2), and the inner ring is used to mount a rotating valve core (5). The hydraulic groove (1-3) of the upper valve body (1) is provided between the inner and outer walls of the upper valve body (1) and is used to mount a hydraulically controlled annular piston (4). The main flow channel mounting threaded hole (1-4) is provided at the rear end of the upper valve body (1) and is threadedly mounted with a main flow channel pipe, which serves as a fluid inlet pipe.

3. The rotary hydraulically controlled one-position three-way valve according to claim 2, characterized in that: The inner wall of the middle valve body (2) is provided with a plurality of sliding positioning grooves (2-1) arranged at even intervals along the circumferential direction, which cooperate with the sliding positioning block (4-2) in the middle of the outer wall of the hydraulically controlled annular piston (4) to restrict the hydraulically controlled annular piston (4) from making linear motion along the sliding positioning groove (2-1).

4. The rotary hydraulically controlled one-position three-way valve according to claim 3, characterized in that: The lower valve body (3) is provided with a first-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 to install the first-flow channel outlet pipe, the second-flow channel outlet pipe and the third-flow channel outlet pipe respectively.

5. The rotary hydraulically controlled one-position three-way valve according to claim 4, characterized in that: 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 arranged in parallel.

6. The rotary hydraulically controlled one-position three-way valve according to claim 5, characterized in that: An annular sealing groove (4-1) is provided on the outer wall at one end of the hydraulically controlled annular piston (4), and a rotating groove (4-3) is provided on the outer wall at the other end; the sealing groove (4-1) is used to install 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 hydraulically controlled annular piston (4), and cooperates with the rotating head (5-2) of the rotating valve core (5); when the hydraulically controlled annular piston (4) performs linear motion, it drives the rotating valve core (5) to rotate along the rotating groove (4-3).

7. The rotary hydraulically controlled one-position three-way valve according to claim 6, characterized in that: A sealing groove (5-1) is provided on the outer wall of the small end of the rotary valve core (5), a bearing stand (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 wall of the large end; the sealing groove (5-1) is used to install a sealing ring to achieve sealing 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 on the inner ring of the angular contact bearing (6) and supports the inner ring wall of the angular contact bearing (6) through the bearing stand (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 adjustment disk (7) and the rubber adjustment disk (8).

8. The rotary hydraulically controlled one-position three-way valve according to claim 7, characterized in that: The metal adjusting disk (7) is provided with a metal adjusting hole (7-1) eccentrically along the axial direction, a sealing groove (7-2) is provided on the outer wall at one end, and a plurality of threaded connection holes (7-4) are provided on the end surface at the other end; 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 rotating valve core (5) to achieve sealing; the threaded connection hole (7-4) is used to install a rubber adjusting disk (8) via a countersunk bolt.

9. The rotary hydraulically controlled one-position three-way valve according to claim 8, characterized in that: The rubber adjustment disk (8) is provided with a rubber adjustment hole (8-1) and a plurality of countersunk holes (8-3) eccentrically along the axial direction; the rubber adjustment hole (8-1) and the metal adjustment hole (7-1) have a concentric feature after the metal adjustment disk (7) and the rubber adjustment disk (8) are installed; the countersunk hole (8-3) is used to install a countersunk bolt, and the connection between the metal adjustment disk (7) and the rubber adjustment disk (8) is achieved through the threaded connection hole (7-4).

10. A hydraulic system, characterized in that: It comprises the rotary hydraulically controlled one-position three-way valve according to any one of claims 1 to 9.

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