High-pressure manual multi-position change-over valve

Abstract

The utility model relates to the field of airplane hydraulic system design, in particular to a high-pressure manual multi-position change-over valve which comprises a valve body, an inlet is formed in the top of the valve body, a plurality of outlets are formed in the side face of the valve body, a rotatable spherical valve is arranged in the valve body, a through hole is formed in the spherical valve, and an inlet of the through hole is communicated with the inlet of the valve body. A sealing part is arranged in each outlet of the valve body, the inner side end faces of the sealing parts are tightly attached to the outer surface of the spherical valve, the outer side end faces of the sealing parts are tightly attached to disc springs arranged at the outlets of the valve body, through holes in the centers of the sealing parts are communicated with outlets of through holes in the spherical valve, a cover is arranged at the lower end of the valve body, and the lower end of the spherical valve penetrates through an inner hole of the cover to be connected with a handle. The hydraulic high-pressure multi-position switching valve is compact in structure, good in sealing performance, small in rotating torque, capable of achieving the hydraulic high-pressure multi-position switching function and meanwhile capable of guaranteeing that switching oil ways do not intermingle oil.

Description

Technical Field

[0001] The utility model relates to the field of aircraft hydraulic system design, in particular to a high-pressure manual multi-position conversion valve. Background Art

[0002] When an aircraft's hydraulic system experiences insufficient oil or insufficient accumulator pressure, the system must be replenished with oil or pressure through an oil replenishment device. When replenishing oil or pressure, the oil replenishment device uses a multi-position conversion valve to select one of multiple oil circuits to output oil while simultaneously shutting off the other oil circuits. Because the pressures of each oil circuit vary, it is necessary to ensure that there is no oil cross-contamination between the circuits. Currently, domestic multi-position conversion valves often use a metal flat sealing structure, which has poor sealing performance. Prolonged pressure maintenance will gradually cause oil leakage, leading to cross-contamination between the conversion circuits. Utility Model Content

[0003] The purpose of the utility model is to provide a high-pressure manual multi-position switching valve with a compact structure and good sealing performance, which can manually switch the oil circuit under high pressure.

[0004] Technical solution:

[0005] A high-pressure manual multi-position conversion valve includes a valve body, an inlet is provided at the top of the valve body, and several outlets are provided on the side. A rotatable spherical valve 10 is provided inside the valve body, and a through hole is provided inside the spherical valve. The inlet of the through hole is connected with the inlet of the valve body. A sealing component 200 is provided in each outlet of the valve body. The inner end face of the sealing component 200 is tightly attached to the outer surface of the spherical valve 10, and the outer side end face is tightly attached to the disc spring 4 provided at the outlet of the valve body. The through hole in the center of the sealing component 200 is connected with the outlet of the through hole inside the spherical valve 10. A cover 6 is provided at the lower end of the valve body, and the lower end of the spherical valve 10 is connected to the handle 7 through the inner hole of the cover 6.

[0006] Furthermore, the sealing component 200 is a sealing ring 1 .

[0007] Furthermore, a first sealing ring 2 is provided on the contact surface between the sealing ring 1 and the valve body outlet, a second sealing ring 5 is provided on the contact surface between the cover 6 and the valve body, and a third sealing ring 9 is provided on the contact surface between the lower end of the spherical valve 10 and the inner hole of the cover 6.

[0008] Furthermore, an adjusting gasket 3 is provided between the disc spring 4 and the outlet end face of the valve body.

[0009] Furthermore, the lower end of the spherical valve 10 passes through the inner hole of the cover 6 and is connected to the handle 7 via a pin 8.

[0010] Furthermore, a conical groove is provided on the outer circular surface of the rotating shaft at the upper end of the spherical valve 10, and a positioning hole is provided inside the valve body. The positioning hole is opposite to the conical groove. A locking component 300 is provided in the positioning hole. The locking component 300 cooperates with the conical groove to realize the positioning of the spherical valve 10.

[0011] Furthermore, the locking component 300 includes a screw 11, a spring 13 and a steel ball 14. The screw 11 is fixedly arranged at the outer end of the positioning hole, the steel ball 14 is movably arranged at the inner end of the positioning hole, and the spring 13 is arranged between the screw 11 and the steel ball 14 and is in a compressed state.

[0012] Furthermore, a fourth sealing ring 12 is provided between the contact surface of the screw 14 and the positioning hole.

[0013] Beneficial effects:

[0014] The utility model proposes a high-pressure manual multi-position conversion valve, which has the following advantages:

[0015] 1. The multi-position conversion function is realized by manually converting the outlet oil circuit of the ball valve. At the same time, the sealing ring and the ball valve are used to seal each oil circuit to ensure that there is no oil leakage in each conversion oil circuit.

[0016] 2. The sealing ring is made of composite material with good wear resistance and high strength, so as to meet the 12MPa high pressure working condition and improve the service life and reliability;

[0017] 3. A tapered groove is provided on the rotating shaft of the spherical valve to cooperate with the steel ball to form a locking structure. When the valve is in place, the valve is locked under the action of the spring force.

[0018] 4. A disc spring is set behind the sealing ring. Under the action of the disc spring elastic force, the sealing ring and the spherical valve are kept in contact, thereby ensuring the sealing performance under low temperature and other working conditions;

[0019] 5. The opening of the sealing ring is set to a sharp edge, and sealing is achieved by squeezing the sharp edge with the spherical valve, which can reduce the manual turning torque.

[0020] The above utility model has a compact structure, good sealing performance, small rotational torque, and can realize the hydraulic high-pressure multi-position conversion function while ensuring that the conversion oil circuits are free of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments of the present invention. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1This is a schematic diagram of an implementation of a high-pressure manual multi-position conversion valve of the utility model.

[0023] Among them, 100, rotating part, 200, sealing part, 300, locking part, 1, sealing ring, 2, first sealing ring, 3, adjusting gasket, 4, adjusting gasket, 5, second sealing ring, 6, cover, 7, handle, 8, pin, 9, third sealing ring, 10, spherical valve, 11, screw, 12, fourth sealing ring, 13, spring, 14, steel ball.

[0024] Figure 2 1 is a schematic diagram showing the state in which the spherical valve is connected to the outlet 1;

[0025] Figure 3 Schematic diagram of the state where the spherical valve is connected to the outlet 2;

[0026] Figure 4 This is a schematic diagram of the state where the spherical valve is not connected to outlet 1 or outlet 2. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are set forth in order to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific arrangement and method set forth below, but rather covers any improvements, replacements, and modifications of structures, methods, and devices without departing from the spirit of the present invention. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessary ambiguity in the present invention.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] The utility model proposes a high-pressure manual multi-position conversion valve, including a valve body, an inlet is arranged on the top of the valve body, a plurality of outlets are arranged on the side, a rotatable spherical valve 10 is arranged inside the valve body, a through hole is arranged inside the spherical valve, the through hole inlet is connected with the inlet of the valve body, a sealing component 200 is arranged in each outlet of the valve body, the inner end face of the sealing component 200 is tightly attached to the outer surface of the spherical valve 10, and the outer side end face is tightly attached to the disc spring 4 arranged at the outlet of the valve body, the through hole in the center of the sealing component 200 is connected with the outlet of the through hole inside the spherical valve 10, a cover 6 is arranged at the lower end of the valve body, and the lower end of the spherical valve 10 is connected to the rotating component 100 through the inner hole of the cover 6, wherein the rotating component 100 is a handle 7.

[0031] The rotating component 100 performs axial rotational motion, and cooperates with the sealing component 200. After rotating into position, the corresponding outlet position can be sealed; after rotating into position, the rotating component 100 can be locked in position by the locking component 300. Figure 1 The figure shows two outlets. The multi-position switching valve can be provided with multiple outlets as required.

[0032] The rotating component 100 may include a handle 7, a pin 8, and a ball valve 10. The handle 7 is secured to the ball valve 10 via the pin 8. When the handle 7 is rotated, the ball valve 10 rotates with it. The ball valve may be provided with tapered grooves corresponding to the number of positions of the multi-position switching valve, allowing it to engage with a locking device when each position is reached.

[0033] The sealing component 200 includes a sealing ring 1, an adjustment washer 3, and a disc spring 4. The disc spring provides the elastic force that squeezes and seals the sealing ring 1 against the spherical valve 10. A first sealing ring 2 is positioned between the sealing ring 1 and the valve body outlet, a second sealing ring 5 is positioned between the cover 6 and the valve body, and a third sealing ring 9 is positioned between the lower end of the spherical valve 10 and the inner hole of the cover 6. An adjustment washer 3 is positioned between the disc spring 4 and the valve body outlet end face.

[0034] A conical groove is provided on the outer circumferential surface of the rotating shaft at the upper end of the spherical valve 10, and a positioning hole is provided inside the valve body. The positioning hole is positioned opposite to the conical groove. A locking component 300 is provided in the positioning hole. The locking component 300 cooperates with the conical groove to achieve the positioning of the spherical valve 10. The locking component 300 includes: a screw 11, a spring 13, and a steel ball 14. The screw 11 is fixedly provided at the outer end of the positioning hole, the steel ball 14 is movably provided at the inner end of the positioning hole, and the spring 13 is provided between the screw 11 and the steel ball 14 and is in a compressed state. The locking force can be adjusted by adjusting the screw insertion depth and the spring parameter conditions. A fourth sealing ring 12 is provided between the contact surface of the screw 14 and the positioning hole.

[0035] The working principle of this utility model:

[0036] Figure 2-4 The multi-position switching valve shown has two outlets and a handle with three positions. When the handle is in position 1, oil flowing into the inlet flows out of outlet 1, while outlet 2, sealed by the ball valve and sealing ring, prevents oil from flowing out. When the handle is in position 2, oil flowing into the inlet flows out of outlet 2, while outlet 1, sealed by the ball valve and sealing ring, prevents oil from flowing out. When the handle is in position 3, both outlets 1 and 2, sealed by the ball valve and sealing ring, prevent oil from flowing out, and oil flowing out of the inlet flows through the oil drain hole. The shaft of the ball valve has three tapered grooves corresponding to the three handle positions. When the handle is in position, it can be locked with a locking device.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present invention, and these modifications or replacements should all be included in the protection scope of the present invention.

Claims

1. A high-pressure manual multi-position switching valve, characterized in that: It includes a valve body, an inlet is provided at the top of the valve body, and several outlets are provided on the side. A rotatable spherical valve is provided inside the valve body, a through hole is provided inside the spherical valve, the through hole inlet is connected with the inlet of the valve body, and a sealing component is provided in each outlet of the valve body. The inner end face of the sealing component is tightly attached to the outer surface of the spherical valve, and the outer side end face is tightly attached to the disc spring provided at the outlet of the valve body. The through hole in the center of the sealing component is connected with the outlet of the through hole inside the spherical valve. A cover is provided at the lower end of the valve body, and the lower end of the spherical valve is connected to the handle through the inner hole of the cover.

2. The high-pressure manual multi-position switching valve according to claim 1, characterized in that: The sealing component is a sealing ring.

3. The high-pressure manual multi-position switching valve according to claim 2, characterized in that: A first sealing ring is provided on the contact surface between the sealing ring and the valve body outlet, a second sealing ring is provided on the contact surface between the cover and the valve body, and a third sealing ring is provided on the contact surface between the lower end of the spherical valve and the inner hole of the cover.

4. The high-pressure manual multi-position switching valve according to claim 2, characterized in that: An adjusting gasket is arranged between the disc spring and the outlet end surface of the valve body.

5. The high-pressure manual multi-position switching valve according to claim 1, characterized in that: The lower end of the spherical valve passes through the inner hole of the cover and is connected with the handle through a pin.

6. The high-pressure manual multi-position switching valve according to claim 1, characterized in that: A tapered groove is provided on the outer circular surface of the rotating shaft at the upper end of the spherical valve, and a positioning hole is provided inside the valve body. The positioning hole is opposite to the tapered groove. A locking component is provided in the positioning hole. The locking component cooperates with the tapered groove to realize the positioning of the spherical valve.

7. The high-pressure manual multi-position switching valve according to claim 6, characterized in that: The locking component includes a screw, a spring and a steel ball. The screw is fixedly arranged at the outer end of the positioning hole, the steel ball is movably arranged at the inner end of the positioning hole, and the spring is arranged between the screw and the steel ball and is in a compressed state.

8. The high-pressure manual multi-position switching valve according to claim 6, characterized in that: A fourth sealing ring is provided between the contact surface of the screw and the positioning hole.

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