Pressure-resistant balanced type valve cavity structure of multi-way valve

Abstract

The utility model relates to a pressure-resistant balanced type valve cavity structure of a multi-way valve, which belongs to the technology of valve cavity structures of multi-way valves and comprises an oil inlet cavity arranged at the center of a valve body, a plurality of gathering cavities arranged in the valve body in a circumferential array mode and oil outlet seats arranged in the gathering cavities, the oil inlet cavity is communicated with the gathering cavities through two symmetrically-arranged arc-shaped oil guide cavities, and the oil outlet seats are communicated with the gathering cavities through two symmetrically-arranged arc-shaped oil guide cavities. Hydraulic oil enters through the oil inlet cavity, enters the gathering cavity through the oil guide cavities and then is discharged from the oil outlet base, composite gradient supporting layers are arranged on the inner side walls of the oil inlet cavity, the oil guide cavities and the gathering cavity, a supporting piece is formed between the two oil guide cavities, a cavity is formed in the supporting piece and used for being filled with elastic media, and a valve element is arranged in the oil inlet cavity. An oil inlet is formed in the center position of the valve element, an oil outlet communicated with the oil inlet is formed in the side wall of the valve element, two oil outlet cavities are symmetrically formed in the oil outlet seat, and the oil inlet valve is novel in structure, high in pressure resistance, long in service life and high in practical value.

Description

TECHNICAL FIELD

[0001] The utility model relates to multiway valve valve cavity structure technical field especially multiway valve pressure resistance balanced formula valve cavity structure. BACKGROUND

[0002] Multiway valve is integrated control valve group combined by two and above switching valve, can integrate safety valve, overload valve, oil supplement valve and other function valves through modular design, and its core function is to realize accurate control to flow, pressure and direction through switching hydraulic oil passage, thereby driving multiple execution mechanism to complete complex action.

[0003] The existing multiway valve body structure is basically fixed, can flexibly control the guidance of hydraulic oil through the adjustment of valve core, but the overall structure of valve cavity is linear type passage, which leads to that hydraulic oil frequently impacts the inner wall of valve body during transfer, not only generates higher strength to valve body, reduces the service life of valve body, but also generates certain noise and oil bubble, is not favorable to the continuous and stable work of multiway valve, and the present application is proposed in view of this. UTILITY MODEL CONTENTS

[0004] In order to overcome the technical defects existing in the prior art, the utility model provides multiway valve pressure resistance balanced formula valve cavity structure, has the effect that the pressure resistance ability is strong, and the service life is long.

[0005] The technical solution adopted by the utility model is: including the oil inlet cavity arranged at the center position of the valve body, the plurality of converging cavities arranged in the valve body in a circumferential array, and the oil outlet seat arranged in the converging cavity, the oil inlet cavity is communicated with the converging cavity through two symmetrically arranged arc-shaped oil guide cavities, the hydraulic oil enters through the oil inlet cavity, and is discharged from the oil outlet seat after entering the converging cavity through the oil guide cavity, the hydraulic oil enters through the two arc-shaped oil guide cavities and is gathered in the converging cavity, the direction of oil inlet can not be directly perpendicular to the oil outlet seat through the oil guide cavity, which can reduce the impact force on the oil outlet seat and reduce the noise generation to a certain extent, and the hydraulic oil in the two oil guide cavities enters the converging cavity and forms a counterattack, which can produce a certain unloading effect, and at the same time, the hydraulic oil is mixed, the composition of the hydraulic oil is balanced, and the inner side wall of the oil inlet cavity, the oil guide cavity and the converging cavity is provided with a composite gradient support layer, and the mechanical properties of the valve cavity structure can be effectively optimized through the gradient distribution of the different properties of the multiple materials.

[0006] Preferably, the two oil guide cavities form a support, the support has a cavity inside, and the cavity is filled with an elastic medium, in actual use, the cavity can be filled with any one or more of gas, liquid or spring, on the one hand, the support can provide support relying on its arc-shaped structure, and on the other hand, the support and buffering capacity can be further improved with the help of the elastic medium in the cavity.

[0007] Preferably, a valve core is arranged in the oil inlet chamber, an oil inlet is arranged at the center position of the valve core, and an oil outlet is arranged on the side wall of the valve core and communicates with the oil inlet; in actual use, the position of the oil inlet is fixed, and the oil passage is controlled by adjusting the position of the oil outlet.

[0008] Preferably, two oil outlet chambers are symmetrically arranged on the oil outlet seat, and the oil outlet chambers and the converging chamber communicate through an arc-shaped channel; the hydraulic oil is discharged through the oil outlet chamber, and the hydraulic oil in the converging chamber enters the oil outlet chamber through the arc-shaped channel; the arc-shaped channel can effectively reduce the oil speed, so that the hydraulic oil can continuously and stably enter the oil outlet chamber, avoid impacting the inner wall of the chamber when entering the oil outlet chamber in a straight line, and also reduce the generation of oil bubbles, and the overall performance is more stable.

[0009] Preferably, the composite gradient support layer is composed of a high-temperature-resistant layer, a heat-insulating layer, an acoustic-absorbing layer and a rigid layer from inside to outside; the high-temperature-resistant layer is located on the inner side and contacts the hydraulic oil; the high-temperature-resistant layer directly contacts the hydraulic oil, has high high-temperature-resistant ability, ensures basic service life, effectively prevents heat leakage of the hydraulic oil and reduces noise of the hydraulic oil entering different channels under the double protection of the heat-insulating layer and the acoustic-absorbing layer, and the outermost rigid layer can ensure overall strength and provide a stable support structure; the gradient distribution of different properties of the multiple layers of materials can effectively optimize the mechanical properties of the valve chamber structure.

[0010] Preferably, the material of the high-temperature-resistant layer is titanium alloy, which has excellent high-temperature-resistant and corrosion-resistant properties, and can maintain stable performance and long service life even when the hydraulic oil is high-temperature.

[0011] Preferably, the material of the heat-insulating layer is glass steel, which has certain heat-insulating effect, is relatively light in weight, and has strong corrosion resistance.

[0012] Preferably, the material of the acoustic-absorbing layer is polyester fiber, which has good acoustic-absorbing and heat-insulating effects and can effectively absorb noise generated during the transfer of the hydraulic oil.

[0013] Preferably, the material of the rigid layer is carbon steel, which has good strength and toughness, is relatively low in cost, has a wide applicable temperature environment, and has high overall stability.

[0014] The utility model discloses an advantageous effect is: 1. The utility model discloses hydraulic oil enters through the oil inlet cavity, after entering the converging cavity from the oil outlet seat after oil guide cavity, the hydraulic oil gathers in the converging cavity after entering through two arc oil guide cavities, and the arc oil guide cavity design can make the oil inlet have a certain angle with the oil outlet seat, reduce the impact force to the oil outlet seat can reduce the noise generation to a certain extent, and the hydraulic oil in two oil guide cavities enters the converging cavity after still will form the butt, can produce certain unloading effect, simultaneously makes the mixing between hydraulic oil, guarantees the balanced composition of hydraulic oil.

[0015] 2. The utility model discloses be provided with the compound gradient support layer on the inner side wall of oil inlet cavity, oil guide cavity and converging cavity, under the multilayer support effect of compound gradient support layer, through the different performance gradient distribution of multilayer material can effectively optimize the mechanical property of valve cavity structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the sectional view of the utility model;

[0018] Figure 3 It is Figure 2 The structure enlarged view of A in

[0019] Figure 4 It is the hierarchical structure schematic diagram of compound gradient support layer in the utility model.

[0020] EXPLANATION OF REFERENCE NUMERALS:In the drawing:1, valve body;2, oil inlet cavity;3, oil guide cavity;4, converging cavity;5, oil outlet seat;6, support piece;7, valve core;8, compound gradient support layer;801, high temperature resistance layer;802, heat insulation layer;803, sound absorption layer;804, rigid layer;9, oil outlet cavity;10, arc channel. DETAILED DESCRIPTION

[0021] The utility model will be further described in connection with the drawings:

[0022] Such as Figures 1-4As shown, the embodiment provides a multi-way valve pressure-resistant equalization type valve chamber structure, which comprises an oil inlet chamber 2 arranged at the center position of a valve body 1, a plurality of converging chambers 4 arranged in a circular array in the valve body 1, and an oil outlet seat 5 arranged in the converging chamber 4. The oil inlet chamber 2 is communicated with the converging chamber 4 through two symmetrically arranged arc-shaped oil guide chambers 3. Hydraulic oil enters through the oil inlet chamber 2, enters the converging chamber 4 through the oil guide chamber 3, and then is discharged from the oil outlet seat 5. The hydraulic oil enters through the two arc-shaped oil guide chambers 3 and then gathers in the converging chamber 4. The direction of the oil entering through the oil guide chamber 3 is not directly perpendicular to the oil outlet seat 5, which reduces the impact force on the oil outlet seat 5 and reduces noise generation to a certain extent. Moreover, the hydraulic oil in the two oil guide chambers 3 enters the converging chamber 4 and forms a counterattack, which can produce a certain unloading effect and mix the hydraulic oil, thereby ensuring the balance of the composition of the hydraulic oil. A composite gradient support layer 8 is arranged on the inner side wall of the oil inlet chamber 2, the oil guide chamber 3, and the converging chamber 4. Under the multi-layer support effect of the composite gradient support layer 8, the different performance gradient distributions of the multi-layer materials can effectively optimize the mechanical properties of the valve chamber structure.

[0023] A support member 6 is formed between the two oil guide chambers 3. The support member 6 has a cavity therein, which is filled with an elastic medium. In actual use, the cavity can be filled with any one or more of gas, liquid, or spring. On the one hand, the support member 6 can provide support by virtue of its arc-shaped structure, and on the other hand, the support and buffering capacity can be further improved by means of the elastic medium in the cavity.

[0024] A valve core 7 is arranged in the oil inlet chamber 2. The center position of the valve core 7 is provided with an oil inlet port, and the side wall of the valve core 7 is provided with an oil outlet port communicated with the oil inlet port. In actual use, the position of the oil inlet port is fixed, and the oil circuit can be controlled by adjusting the position of the oil outlet port.

[0025] Two oil outlet chambers 9 are symmetrically arranged on the oil outlet seat 5. The oil outlet chambers 9 are communicated with the converging chamber 4 through arc-shaped channels 10. The hydraulic oil is discharged through the oil outlet chambers 9, and the hydraulic oil in the converging chamber 4 enters the oil outlet chambers 9 through the arc-shaped channels 10. The arc-shaped channels 10 can effectively reduce the oil speed, so that the hydraulic oil can enter the oil outlet chambers 9 continuously and stably, avoid impacting the inner wall of the chamber when entering the oil outlet chambers 9 directly, and reduce the generation of oil bubbles, thereby improving the overall performance.

[0026] As shown in the drawings, Figure 4As shown, the composite gradient support layer 8 is composed of a high-temperature-resistant layer 801, a heat-insulating layer 802, a sound-absorbing layer 803, and a rigid layer 804 from inside to outside. The high-temperature-resistant layer 801 is located on the inner side and contacts with the hydraulic oil. The high-temperature-resistant layer 801 directly contacts with the hydraulic oil, has high temperature resistance, ensures the basic service life, effectively prevents the heat of the hydraulic oil from leaking out and reduces the noise of the hydraulic oil entering different channels under the protection of the double layers of the heat-insulating layer 802 and the sound-absorbing layer 803. The outermost rigid layer 804 can ensure the overall strength and provide a stable support structure. The gradient distribution of the different properties of the multiple layers of materials can effectively optimize the mechanical properties of the valve cavity structure.

[0027] The material of the high-temperature-resistant layer 801 is titanium alloy, which has excellent high-temperature resistance and corrosion resistance. Even if the hydraulic oil is high-temperature, it can still maintain stable performance and has a long service life. The material of the heat-insulating layer 802 is glass steel, which has certain heat-insulating effect, is relatively light, has strong corrosion resistance, and has good sound-absorbing and heat-insulating effects. The material of the sound-absorbing layer 803 is polyester fiber, which can effectively absorb the noise generated during the transfer of the hydraulic oil. The material of the rigid layer 804 is carbon steel, which has good strength and toughness, relatively low cost, and is suitable for a wide temperature environment, and has high overall stability.

Claims

1. A pressure balanced valve cavity structure for a multi-way valve, characterized by: The oil inlet cavity (2) is arranged at the center of the valve body (1), a plurality of converging cavities (4) are arranged in the valve body (1) in a circumferential array, and an oil outlet seat (5) is arranged in the converging cavity (4), the oil inlet cavity (2) is communicated with the converging cavity (4) through two symmetrically arranged arc-shaped oil guide cavities (3), hydraulic oil enters through the oil inlet cavity (2), enters the converging cavity (4) through the oil guide cavity (3), and is discharged from the oil outlet seat (5), and a composite gradient support layer (8) is arranged on the inner side wall of the oil inlet cavity (2), the oil guide cavity (3) and the converging cavity (4).

2. The pressure-equalizing valve cavity structure of a multiple valve according to claim 1, characterized in that: A support (6) is formed between the two oil guide cavities (3), the support (6) has a cavity therein, and the cavity is filled with an elastic medium.

3. The pressure-equalizing valve cavity structure of a multiple valve according to claim 1, characterized in that: A valve core (7) is arranged in the oil inlet cavity (2), an oil inlet is arranged at the center of the valve core (7), and an oil outlet is arranged on the side wall of the valve core (7) and communicated with the oil inlet.

4. The pressure-equalizing valve cavity structure of a multiple valve according to claim 1, characterized in that: Two oil outlet cavities (9) are symmetrically arranged on the oil outlet seat (5), and the oil outlet cavities (9) are communicated with the converging cavities (4) through arc-shaped channels (10).

5. The pressure-equalizing valve cavity structure of a multiple valve according to claim 1, characterized in that: The composite gradient support layer (8) is composed of a high-temperature-resistant layer (801), a heat-insulating layer (802), a sound-absorbing layer (803) and a rigid layer (804) from inside to outside, and the high-temperature-resistant layer (801) is in contact with the hydraulic oil.

6. The pressure-equalizing valve cavity structure of a multiple valve according to claim 5, characterized in that: The material of the high-temperature-resistant layer (801) is titanium alloy.

7. The pressure equalizing valve cavity structure for a multi-way valve according to claim 5, characterized by: The material of the heat-insulating layer (802) is glass steel.

8. The pressure-equalizing valve cavity structure of a multiple valve according to claim 5, characterized in that: The material of the sound-absorbing layer (803) is carbon steel.

9. The pressure-equalizing valve cavity structure of a multiple valve according to claim 5, characterized in that: The material of the rigid layer (804) is polyester fiber.

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