High-sealing-performance multi-way reversing valve

Abstract

The utility model discloses a multi-way reversing valve with high sealing performance. The multi-way reversing valve comprises a valve body and a valve core, a valve channel is arranged in the middle of the valve body, and a plurality of channels communicated with the valve channel are arranged at the bottom of the valve body. A sealing block is arranged at the inserting opening, the sealing block is of a barrel structure with one end open, a through hole is formed in the sealing block and matched with the sealing part of the valve element, and the sealing block is pressed by the shell; notches are formed in openings in two ends of the through hole; a spring seat is arranged in the cavity of the sealing block, and a return spring is arranged on the spring seat; the valve element is composed of a sealing part and driving columns on the two sides. The valve element is inserted into the valve body through the insertion opening and matched with the valve channel. A triangular protruding ring is arranged on the sealing part located in the valve channel and close to the sealing block, and the triangular protruding ring is matched with the notch. Through the internal and external matching of the sealing block and the triangular convex ring which are in threaded connection, the sealing performance is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of multi-way valves, in particular to a high-sealing multi-way directional control valve. Background Art

[0002] The sealing performance of a multi-way reversing valve primarily depends on the fit between the valve core and valve seat, as well as the design of the sealing structure. The valve core is the movable part of the valve, while the valve seat is the fixed part. Together, they form a fluid channel. When the valve core moves within the valve seat, it changes the direction of the channel, thereby changing the flow of the fluid. To achieve a tight seal, a certain interference fit is usually established between the valve core and the valve seat. Special sealing structures, such as sealing rings and sealing grooves, are also employed. These sealing structures can effectively reduce the possibility of fluid leakage.

[0003] At present, the traditional structure only uses a sealing ring to achieve the sealing between the valve core and the valve body, which is not sealing enough; at the same time, the internal sealing block and other structures adopt a card-type structure, which may also cause leakage. Utility Model Content

[0004] The utility model aims to provide a multi-way directional control valve with high sealing performance and low leakage.

[0005] The purpose of the utility model is achieved as follows: a high-sealing multi-way reversing valve, comprising a valve body and a valve core;

[0006] A valve channel is provided in the middle of the valve body, and multiple groups of channels are provided at the bottom of the valve body to communicate with the valve channel. Insertion ports are provided at both ends of the valve channel; a sealing block is provided at the insertion port, and the sealing block is a cylindrical structure with one end open. A through hole is provided on the sealing block to match the sealing portion of the valve core, and the sealing block is pressed by the housing; notches are provided at the openings at both ends of the through hole; a spring seat is provided in the cavity of the sealing block, and a return spring is provided on the spring seat;

[0007] The valve core consists of a sealing part and driving columns on both sides; the valve core is inserted into the valve body through the insertion port and cooperates with the valve channel; a triangular raised ring is provided on the sealing part located in the valve channel and close to the sealing block, and the triangular raised ring cooperates with the notch.

[0008] Preferably, a mounting groove is provided on the periphery of the insertion port, and an internal thread is provided on the inner wall of the mounting groove; an external thread matching the mounting groove is provided on the outer wall of the sealing block; and the length of the sealing block is greater than the depth of the mounting groove.

[0009] Preferably, a plurality of sealing rings are provided on the inner wall of the through hole to contact the sealing portion.

[0010] Preferably, the triangular raised ring and the notch are both covered with a rubber layer.

[0011] Preferably, a rubber ring matching the notch is provided on the inner side of the spring seat.

[0012] Preferably, the length of the sealing portion is the sum of the spacing between the insertion ports and twice the height of the through hole.

[0013] Compared with the prior art, the present invention is beneficial in that:

[0014] 1. The connection between the sealing block and the insertion port is changed from the traditional snap connection to a threaded connection, which makes the connection tighter; at the same time, the length of the sealing block is extended, making it more convenient and quick to rotate during installation;

[0015] 2. Multiple sets of sealing rings are set in the through hole to improve the sealing between the through hole and the sealing part; at the same time, notches, triangular raised rings and rubber rings are set so that when the sealing part moves left and right, there are rubber rings covering and sealing on either side of the through hole, which further greatly improves the overall sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 for Figure 1 A magnified view of the structure in the middle.

[0018] Among them, 1 valve body, 101 valve channel, 1011 insertion port, 102 channel, 2 valve core, 201 sealing part, 202 drive column, 3 sealing block, 301 through hole, 3011 notch, 4 spring seat, 5 return spring, 6 triangular raised ring, 7 mounting groove, 8 sealing ring, 9 rubber ring, 10 shell. DETAILED DESCRIPTION

[0019] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0020] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is usually placed when in use. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] like Figure 1-2 As shown, a high-sealing multi-way reversing valve includes a valve body 1 and a valve core 2;

[0023] A valve channel 101 is provided in the middle of the valve body 1. A plurality of channels 102 are provided at the bottom of the valve body 1 to communicate with the valve channel 101. Insertion ports 1011 are provided at both ends of the valve channel 101. A sealing block 3 is provided at the insertion port 1011. The sealing block 3 is a cylindrical structure with one end open. A through hole 301 is provided on the sealing block 3 to match the sealing portion of the valve core 2. The sealing block 3 is tightly pressed by the housing 10. Notches 3011 are provided at both ends of the through hole 301. A spring seat 4 is provided in the cavity of the sealing block 3, and a return spring 5 is provided on the spring seat 4.

[0024] The valve core 2 consists of a sealing part 201 and driving columns 202 on both sides. The diameter of the sealing part 201 is larger than the diameter of the driving columns 202. The valve core 2 is inserted into the valve body 1 through the insertion port 1011 and cooperates with the valve channel 101. A triangular raised ring 6 is provided on the sealing part 201 located in the valve channel 101 and close to the sealing block 3, and the triangular raised ring 6 cooperates with the notch 3011.

[0025] like Figure 2As shown, a mounting groove 7 is provided on the periphery of the insertion port 1011 , and an internal thread is provided on the inner wall of the mounting groove 7 ; an external thread matching the mounting groove 7 is provided on the outer wall of the sealing block 3 ; and the length of the sealing block 3 is greater than the depth of the mounting groove 7 .

[0026] like Figure 2 As shown, multiple sets of sealing rings 8 are provided on the inner wall of the through hole 301 to contact the sealing portion 201 to ensure the sealing between the inner wall of the through hole and the sealing portion.

[0027] like Figure 2 As shown, the triangular raised ring 6 and the notch 3011 are covered with a rubber layer (not shown in the figure). When the valve core moves left or right to the maximum stroke, the triangular raised ring and the notch form a match to form an inner seal.

[0028] like Figure 2 As shown, a rubber ring 9 matching the notch 3011 is provided on the inner side of the spring seat 4. When the spring seat rebounds, the rubber ring is embedded in the notch to form an outer seal.

[0029] like Figure 1-2 As shown, the length of the sealing portion 201 is the sum of the spacing between the insertion ports 1011 and twice the height of the through hole 301, ensuring that the side surfaces at both ends of the sealing portion are flush with the outer facade of the through hole of the sealing block. When the valve core moves left and right, the end surface of the sealing portion will come into contact with the spring seat, further compressing the spring through the spring seat.

[0030] The working principle of the utility model is explained as follows: when the valve core is in the middle position, a rubber ring matching the notch is provided on the inner side of the spring seat. When the spring seat rebounds, the rubber ring at this position is embedded in the notch to form an outer seal; when the valve core moves left or right to the maximum stroke, the triangular raised ring cooperates with the notch to form an inner seal.

[0031] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention. The technical content sought to be protected by the present invention is fully set forth in the claims.

Claims

1. A high sealing multi-way reversing valve, characterized in that: Including valve body and valve core; A valve channel is provided in the middle of the valve body, and multiple groups of channels are provided at the bottom of the valve body to communicate with the valve channel. Insertion ports are provided at both ends of the valve channel; a sealing block is provided at the insertion port, and the sealing block is a cylindrical structure with one end open. A through hole is provided on the sealing block to match the sealing portion of the valve core, and the sealing block is pressed by the housing; notches are provided at the openings at both ends of the through hole; a spring seat is provided in the cavity of the sealing block, and a return spring is provided on the spring seat; The valve core consists of a sealing part and driving columns on both sides; the valve core is inserted into the valve body through the insertion port and cooperates with the valve channel; a triangular raised ring is provided on the sealing part located in the valve channel and close to the sealing block, and the triangular raised ring cooperates with the notch.

2. A high sealing multi-way reversing valve according to claim 1, characterized in that: The insertion port is provided with a mounting groove on its periphery, and an internal thread is provided on the inner wall of the mounting groove; the outer wall of the sealing block is provided with an external thread matching the mounting groove; the length of the sealing block is greater than the depth of the mounting groove.

3. A high sealing multi-way reversing valve according to claim 1, characterized in that: A plurality of sealing rings are provided on the inner wall of the through hole and contact with the sealing portion.

4. A high sealing multi-way reversing valve according to claim 1, characterized in that: The triangular raised circle and the notch are both covered with a rubber layer.

5. A high sealing multi-way reversing valve according to claim 1, characterized in that: The inner side surface of the spring seat is provided with a rubber ring matching the notch.

6. A high sealing multi-way reversing valve according to claim 1, characterized in that: The length of the sealing portion is the sum of the spacing between the insertion openings and twice the height of the through hole.

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