High-frequency four-way valve

Abstract

The utility model discloses a high-frequency four-way valve, which relates to the technical field of four-way valves and comprises a valve body, a sunken step is arranged at the top end of the valve body, a valve cover is fixed in the step through a bolt, and a valve core is rotatably arranged in the valve cover through a bearing. According to the high-frequency four-way valve, the valve element and the valve rods at the upper end and the lower end are designed to be of an integrated structure, part separation or damage caused by mechanical gaps between the valve rods and the valve element under the high-frequency action can be removed, the upper sealing piece and the lower sealing piece are additionally arranged, and the sealing performance of the upper valve rod and the lower valve rod of the valve under the high-frequency action is improved; according to the high-frequency four-way valve, the valve seats which form sealing with the valve element are designed to be of a split type structure, the spring gaskets are installed at the groove bottoms of the installation grooves where the valve seats are located, and when internal leakage occurs due to abrasion, the valve seats are compensated through the elastic gaskets, so that the valve seats are tightly pressed on the valve element all the time to form tight sealing fit, and the service life of the valve element is prolonged. And stability and reliability of the four-way valve in the long-term working process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of four-way valves, in particular to a high-frequency four-way valve. Background Art

[0002] The four-way ball valve only needs to operate the wrench or the driving mechanism to rotate the ball by 90 degrees, and can switch the flow directions of two media at the same time, which is convenient and fast. It can achieve the effect of multi-purpose of one valve, and has the characteristics of small fluid resistance, good sealing performance and long service life.

[0003] During the working process of the four-way valve, since the steel ball serving as the valve core rotates for a long time, and the valve seat in the prior art usually has no compensation function. Thus, when the sealing surface of the valve seat is worn, the valve seat can only be removed and the sealing surface can be replaced, and the operation is very troublesome.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structural deficiencies, and a high-frequency four-way valve is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-frequency four-way valve to solve the problems put forward in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a high-frequency four-way valve, including a valve body, a sunken step is opened at the top end of the valve body, and a valve cover is bolted and fixed inside the step. A valve core is rotatably arranged inside the valve cover through a bearing, and four channel openings are opened on the valve core. Valve rods are fixed at the upper and lower ends of the valve core, and the valve rods are respectively in sealing fit with the valve cover and the valve body through sealing members.

[0007] Further, the valve core is of a spherical structure, and the valve core and the valve rods at the upper and lower ends adopt an integrated structure design.

[0008] Further, the four channel openings are arranged in an array on the equatorial circumferential section of the valve core sphere, and two flow channels arranged in an X shape are communicated inside the four channel openings.

[0009] Further, a valve cavity is opened in the middle of the valve body, and the opening size of the valve cavity is matched with the valve core.

[0010] Further, four installation channels are arranged in an array on the equator of the spherical surface of the valve cavity, and a locking joint is correspondingly arranged in each installation channel.

[0011] Further, a valve seat is slidably arranged in the installation groove of the locking joint facing the valve cavity, and the valve seat has a spherical concave surface adapted to the spherical surface of the valve core.

[0012] Further, a spring gasket is installed at the bottom of the installation groove where the valve seat is located, and the valve seat is tightly attached to the valve core under the elastic action of the spring gasket to form a seal.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. When the utility model is in use, the valve core and the valve stems at the upper and lower ends of the present application adopt an integrated structure design, which can eliminate the separation or damage of components caused by the mechanical clearance between the valve stem and the valve core under high-frequency action. Moreover, two seals are newly added at the upper and lower parts to improve the sealing performance at the upper and lower valve stems of the valve under high-frequency operation.

[0015] 2. When the utility model is in use, the high-frequency four-way valve of the present application adopts a split structure design for the valve seat that forms a seal with the valve core, and a spring gasket is installed at the bottom of the installation groove where each valve seat is located. When internal leakage occurs due to wear, the valve seat is compensated by the elastic gasket, so that the valve seat is always pressed tightly on the valve core to form a tight sealing fit, ensuring the stable and reliable operation of the four-way valve during long-term work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the device of the utility model;

[0017] Figure 2 is a schematic diagram of the split structure of the device of the utility model;

[0018] Figure 3 is a schematic diagram of the internal sectional structure of the utility model.

[0019] In the figure: 1. Valve body; 2. Step; 3. Valve cover; 4. Valve core; 5. Channel port; 6. Valve stem; 7. Seal; 8. Valve cavity; 9. Installation channel; 10. Locking joint; 11. Valve seat; 12. Spring gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes in detail the embodiments of the utility model with reference to the drawings and embodiments. The following embodiments are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0021] Such as Figures 1 to 3As shown, the high-frequency four-way valve includes a valve body 1. A sunken step 2 is provided at the top of the valve body 1, and a valve cover 3 is fixed by bolts inside the step 2. A valve core 4 is rotatably arranged inside the valve cover 3 through a bearing. Four channel openings 5 are provided on the valve core 4. The valve core 4 is of a spherical structure, and the valve core 4 and the valve stems 6 at the upper and lower ends are designed with an integrated structure. The four channel openings 5 are arranged in an array on the circumferential section of the equator of the sphere of the valve core 4. Two X-shaped flow channels are communicated inside the four channel openings 5. Valve stems 6 are fixed at the upper and lower ends of the valve core 4, and the valve stems 6 are respectively in sealed cooperation with the valve cover 3 and the valve body 1 through seals 7. In this application, the valve core 4 and the valve stems 6 at the upper and lower ends are designed with an integrated structure, which can eliminate the separation or damage of components caused by the mechanical clearance between the valve stem 6 and the valve core 4 under high-frequency action. In addition, two seals 7 are added at the upper and lower parts to improve the sealing performance of the valve at the upper and lower valve stems 6 under high-frequency operation. A valve cavity 8 is provided in the middle of the valve body 1, and the size of the valve cavity 8 is matched with that of the valve core 4. Four installation channels 9 are arranged in an array on the equator of the spherical surface of the valve cavity 8, and a locking joint 10 is correspondingly arranged in each installation channel 9. A valve seat 11 is slidably arranged in the installation groove of the locking joint 10 facing the valve cavity 8, and the valve seat 11 has a spherical concave surface adapted to the spherical surface of the valve core 4. In this application, the valve seat 11 that forms a seal with the valve core 4 of the high-frequency four-way valve is designed with a split structure, and a spring gasket 12 is installed at the bottom of the installation groove where each valve seat 11 is located. When internal leakage occurs due to wear, the valve seat 11 is compensated by the elastic gasket, so that the valve seat 11 is always pressed tightly on the valve core 4 to form a tight seal, ensuring the stable and reliable operation of the four-way valve during long-term operation. A spring gasket 12 is installed at the bottom of the installation groove where the valve seat 11 is located, and the valve seat 11 is tightly attached to the valve core 4 under the elastic action of the spring gasket 12 to form a seal.

[0022] Working principle: When using this high-frequency four-way valve, in this application, the valve core 4 and the valve stems 6 at the upper and lower ends are designed with an integrated structure, which can eliminate the separation or damage of components caused by the mechanical clearance between the valve stem 6 and the valve core 4 under high-frequency action. In addition, two seals 7 are added at the upper and lower parts to improve the sealing performance of the valve at the upper and lower valve stems 6 under high-frequency operation. Moreover, the valve seat 11 that forms a seal with the valve core 4 of this high-frequency four-way valve is designed with a split structure, and a spring gasket 12 is installed at the bottom of the installation groove where each valve seat 11 is located. When internal leakage occurs due to wear, the valve seat 11 is compensated by the elastic gasket, so that the valve seat 11 is always pressed tightly on the valve core 4 to form a tight seal, ensuring the stable and reliable operation of the four-way valve during long-term operation.

[0023] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A high frequency four-way valve, comprising a valve body (1), characterized in that: The top of the valve body (1) is provided with a sunken step (2), and a valve cover (3) is fixed by bolts inside the step (2). A valve core (4) is rotated inside the valve cover (3) through a bearing, and four passage openings (5) are provided on the valve core (4). A valve stem (6) is fixed at the upper and lower ends of the valve core (4), and the valve stem (6) is respectively sealed with the valve cover (3), i.e., the valve body (1), through a sealing member (7).

2. The high-frequency four-way valve according to claim 1, characterized in that: The valve core (4) is a spherical structure, and the valve core (4) and the valve stems (6) at the upper and lower ends are designed as an integrated structure.

3. The high-frequency four-way valve according to claim 1, characterized in that: The four channel openings (5) are arrayed on the equatorial circumferential section of the valve core (4) sphere, and the four channel openings (5) are internally connected to two flow channels arranged in an X shape.

4. The high-frequency four-way valve according to claim 1, characterized in that: A valve cavity (8) is provided in the middle of the valve body (1), and the size of the valve cavity (8) matches that of the valve core (4).

5. The high-frequency four-way valve according to claim 4, characterized in that: Four installation channels (9) are distributed in an array on the spherical equator of the valve cavity (8), and a locking joint (10) is correspondingly arranged in each installation channel (9).

6. The high-frequency four-way valve according to claim 5, characterized in that: The locking joint (10) is provided with a valve seat (11) which is slidably disposed in the mounting groove at the position of the valve cavity (8), and the valve seat (11) has a spherical concave surface which matches the spherical surface of the valve core (4).

7. The high-frequency four-way valve according to claim 6, characterized in that: A spring gasket (12) is installed at the bottom of the installation groove where the valve seat (11) is located, and under the elastic action of the spring gasket (12), the valve seat (11) and the valve core (4) are tightly fitted to form a seal.

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