Valve plate sealing structure of multidirectional valve

Abstract

The utility model discloses a valve plate sealing structure of a multidirectional valve, which comprises a plurality of groups of valve plates, and outer sealing rubber strips and inner sealing rubber strips which are arranged on the valve plates, a first mounting groove is formed in the valve plate in an area defined by the through holes; a plurality of groups of circulation channels are formed in the valve plate, and second mounting grooves are turned in the peripheries of the circulation channels; the inner sealing rubber strip comprises a first rubber strip and a second rubber strip; the first rubber strip and the second rubber strip are annular, a first insertion protrusion is arranged on the side, close to the circulation channel, of the first rubber strip, a first notch is formed in the side, away from the circulation channel, of the first rubber strip, a second notch is formed in the side, close to the circulation channel, of the second rubber strip, and a second insertion protrusion is arranged on the side, away from the circulation channel, of the second rubber strip; and after the two groups of valve plates are in butt joint, the first insertion bulge is in embedded fit with the second notch, and the second insertion bulge is in embedded fit with the first notch. According to the utility model, the valve plates and the sealing rubber strips are structurally optimized, so that the sealing performance between the valve plates is improved, and the condition of leakage between the valve plate groups is avoided.

Description

Technical Field

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

[0002] A multi-way valve (also known as a multi-way valve or multi-port valve) is a complex valve system composed of multiple sets of valve plates. This design allows a single valve structure to simultaneously control the flow direction, pressure, and flow rate of multiple hydraulic or pneumatic circuits, thereby greatly improving the efficiency and flexibility of the fluid control system.

[0003] The sealing between the valve plates of traditional multi-way valves is mainly achieved by sealing elements such as gaskets and sealing rings. Generally, gaskets and sealing rings are installed on turned steps. Gaskets on turned steps are prone to displacement, resulting in loose sealing. At the same time, the sealing rings between the two-way valve plates are smooth and in contact with each other, and the sealing performance is insufficient, which may also cause leakage. Utility Model Content

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

[0005] The purpose of the utility model is achieved as follows: a multi-way valve disc sealing structure, comprising a plurality of valve discs, and outer sealing strips and inner sealing strips arranged on the valve discs;

[0006] The valve disc is provided with perforations at four corners, and the valve disc in the area enclosed by the perforations is provided with a first mounting groove for placing an outer sealing strip; the valve disc is provided with multiple groups of circulation channels, and a second mounting groove is turned on the outer periphery of the circulation channel, and the second mounting groove is used to place an inner sealing strip; the inner sealing strip includes a first inner strip and a second strip; the first strip and the second strip are both annular, the first strip is placed in the second mounting groove at one end of the circulation channel, and the second strip is placed in the second mounting groove at the other end of the circulation channel. The first strip is provided with a first insertion protrusion on the side close to the circulation channel and a first notch on the side away from the circulation channel, and the second strip is provided with a second notch on the side close to the circulation channel and a second insertion protrusion on the side away from the circulation channel; the first insertion protrusion and the second insertion protrusion, the first notch and the second notch are mirror-symmetrical and are all set to wedge shape; after the two groups of valve discs are docked, the first insertion protrusion and the second notch, and the second insertion protrusion and the first notch are embedded and matched.

[0007] Preferably, several groups of valve plates are connected by connecting rods passing through the through holes and then fixedly connected by nuts.

[0008] Preferably, limiting grooves are provided on both sides of the bottom of the first installation groove and the second installation groove, and rubber strip protrusions are provided on both sides of the bottom of the first rubber strip, the second rubber strip and the outer sealing rubber strip, and the rubber strip protrusions are embedded in the limiting grooves.

[0009] Preferably, the height of the first insertion protrusion and the second insertion protrusion is greater than the height of the first notch and the second notch.

[0010] Preferably, the height of the outer sealing strip is greater than the height of the accommodating cavity formed between the first mounting grooves after the two groups of valve plates are connected.

[0011] Preferably, the first mounting groove and the second mounting groove are located on both sides of the end surface of the valve plate; the first rubber strip and the second rubber strip are respectively placed in the second mounting grooves on both sides of the end surface of the valve plate.

[0012] Compared with the prior art, the present invention is beneficial in that:

[0013] 1. An installation groove is set on the periphery of the circulation channel. Compared with the traditional turning step, the inner sealing strip is less likely to shift and slide after being placed inside, which greatly improves the stability after installation;

[0014] 2. An outer sealing strip is set on the periphery of the valve plate to form a double seal with the inner sealing strip. When the inner sealing strip fails, the outer sealing strip can provide protection to further prevent leakage.

[0015] 3. The inner sealing strip is improved to form multiple sets of insertion protrusions and notches. The wedge-shaped structure will be squeezed when the two sets of valve plates are docked, thereby greatly improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a structural diagram of a single set of valve plates of the utility model.

[0018] Figure 3 This is a schematic structural diagram of the first and second rubber strips of the utility model.

[0019] Figure 4 This is a structural diagram of the docking of two groups of valve plates in the utility model.

[0020] Among them, 1 valve plate, 101 perforation, 102 first installation groove, 2 outer sealing strips, 3 inner sealing strips, 301 first strip, 3011 insertion protrusion, 3012 first notch, 302 second strip, 3021 second notch, 3022 second insertion protrusion, 4 circulation channels, 401 second installation groove, 5 limit grooves, 6 strip protrusions. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] like Figure 1-4 As shown, a multi-way valve disc sealing structure includes a plurality of valve discs 1, and outer sealing strips 2 and inner sealing strips 3 provided on the valve discs 1;

[0025] The valve disc 1 is provided with perforations 101 at the four corners, and a first mounting groove 102 is provided on the valve disc 1 within the area enclosed by the perforations 101. The first mounting groove 102 is used to place the outer sealing strip 2; multiple groups of circulation channels 4 are provided in the valve disc 1, and the outer periphery of the circulation channel 4 is turned with a second mounting groove 401. The second mounting groove 401 is used to place the inner sealing strip 3; the inner sealing strip 3 includes a first inner strip 301 and a second inner strip 302; the first strip 301 and the second strip 302 are both annular, the first strip 301 is placed in the second mounting groove at one end of the circulation channel, and the second strip 302 is placed in the second mounting groove at the other end of the circulation channel The first rubber strip 301 is provided with a first insertion protrusion 3011 on the side close to the circulation channel 3 and a first notch 3012 on the side away from the circulation channel 3. The second rubber strip 302 is provided with a second notch 3021 on the side close to the circulation channel 3 and a second insertion protrusion 3022 on the side away from the circulation channel 3. The first insertion protrusion 3011 and the second insertion protrusion 2022, the first notch 3012 and the second notch 3021 are mirror-symmetrical and are all set to wedge shape. After the two sets of valve plates are docked, the first insertion protrusion 3011 and the second notch 3021, and the second insertion protrusion 3022 and the first notch 3012 are embedded and matched.

[0026] like Figure 1 As shown, several groups of valve plates 1 are connected by connecting rods passing through the through holes and then fixedly connected by nuts. Four groups of through holes are provided. After the connection, multiple groups of valve plates are combined, and the valve plates are stable and not easy to loosen.

[0027] like Figure 1 As shown, limiting grooves 5 are provided on both sides of the bottom of the first installation groove 102 and the second installation groove 301, and rubber strip protrusions 6 are provided on both sides of the bottom of the first rubber strip 301, the second rubber strip 302 and the outer sealing rubber strip 2. The rubber strip protrusions 6 are embedded in the limiting grooves 5. The first rubber strip, the second rubber strip and the outer sealing rubber strip are not easy to fall off after being embedded, and have high stability.

[0028] like Figure 2-4 As shown, the height of the first insertion protrusion 3011 and the second insertion protrusion 3022 is greater than the height of the first notch 3012 and the second notch 3021, ensuring that the first insertion protrusion and the second insertion protrusion can be deformed after insertion. After deformation, the first insertion protrusion and the second insertion protrusion are in closer contact with the first notch and the second notch, and the sealing is higher.

[0029] like Figure 4 As shown, the height of the outer sealing strip 2 is slightly larger than the height of the accommodating cavity formed between the first mounting grooves 102 after the two sets of valve plates 1 are connected. After the outer sealing strip is placed inside the accommodating cavity, due to its slightly larger volume, the outer sealing ring will fill the main body of the accommodating cavity, thereby enhancing the external sealing performance.

[0030] like Figure 2As shown, the first mounting groove 102 and the second mounting groove 401 are located on both sides of the end surface of the valve plate; the first rubber strip 3013 and the second rubber strip 302 are respectively placed in the second mounting grooves on both sides of the end surface of the valve plate.

[0031] The working principle of the utility model is explained as follows: when in use, multiple groups of valve plates are connected by a connecting rod, and then squeezed against each other until the first rubber strip and the second rubber strip are embedded in each other. Finally, the connecting rod is fixed by a nut, and the multiple groups of valve plates are combined together. The outer sealing strip and the inner sealing strip can form a double seal, which greatly avoids leakage.

[0032] 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 multi-way valve disc sealing structure, characterized in that: It includes several groups of valve plates, and outer sealing strips and inner sealing strips arranged on the valve plates; The valve disc is provided with perforations at four corners, and the valve disc in the area enclosed by the perforations is provided with a first mounting groove for placing an outer sealing strip; the valve disc is provided with multiple groups of circulation channels, and a second mounting groove is turned on the outer periphery of the circulation channel, and the second mounting groove is used to place an inner sealing strip; the inner sealing strip includes a first inner strip and a second strip; the first strip and the second strip are both annular, the first strip is placed in the second mounting groove at one end of the circulation channel, and the second strip is placed in the second mounting groove at the other end of the circulation channel. The first strip is provided with a first insertion protrusion on the side close to the circulation channel and a first notch on the side away from the circulation channel, and the second strip is provided with a second notch on the side close to the circulation channel and a second insertion protrusion on the side away from the circulation channel; the first insertion protrusion and the second insertion protrusion, the first notch and the second notch are mirror-symmetrical and are all set to wedge shape; after the two groups of valve discs are docked, the first insertion protrusion and the second notch, and the second insertion protrusion and the first notch are embedded and matched.

2. A multi-way valve disc sealing structure according to claim 1, characterized in that: Several groups of valve plates are connected by connecting rods passing through the through holes and then fixedly connected by nuts.

3. The multi-way valve disc sealing structure according to claim 1, characterized in that: Limiting grooves are provided on both sides of the bottom of the first installation groove and the second installation groove, and rubber strip protrusions are provided on both sides of the bottom of the first rubber strip, the second rubber strip and the outer sealing rubber strip, and the rubber strip protrusions are embedded in the limiting grooves.

4. A multi-way valve disc sealing structure according to claim 1, characterized in that: The heights of the first insertion protrusion and the second insertion protrusion are greater than the heights of the first notch and the second notch.

5. The multi-way valve disc sealing structure according to claim 1, characterized in that: The height of the outer sealing strip is greater than the height of the accommodating cavity formed between the first mounting grooves after the two groups of valve plates are connected.

6. The multi-way valve disc sealing structure according to claim 1, characterized in that: The first mounting groove and the second mounting groove are located on both sides of the end surface of the valve plate; the first rubber strip and the second rubber strip are respectively placed in the second mounting grooves on both sides of the end surface of the valve plate.

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