Novel multi-way valve

Abstract

The utility model discloses a novel multi-way valve which comprises a valve body and further comprises a valve rod arranged in the valve body, an insertion channel is formed in the valve body, the valve body is arranged in the insertion channel, sealing ends are arranged on the two sides of the insertion channel and abut against the valve rod, a left sealing plate is arranged on the valve rod located on the left sides of the sealing ends, and a right sealing plate is arranged on the valve rod located on the right sides of the sealing ends. Sealing sleeves are arranged in the insertion channels on the outer sides of the left sealing plate and the right sealing plate; a limiting plate is arranged at the right end of the valve rod, a spring set is arranged on the valve rod on the right side of the limiting plate, and the other end of the spring set abuts against a sealing cover which is connected with the valve body through a bolt. A handle is arranged at the left end of the valve rod. Multiple sealing is formed among the left sealing plate, the right sealing plate, the sealing sleeve and the valve rod, so that the risk of internal liquid leakage is greatly reduced, meanwhile, the dustproof performance is further improved, and the external spring is more convenient to maintain.

Description

Technical Field

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

[0002] Multi-way valves are widely used in equipment such as hydraulic excavators and hydraulic drills to improve efficiency and safety. In the construction sector, multi-way valves are also used in equipment such as construction machinery, concrete mixers, and cranes to improve efficiency and stability. These environments are often dusty, making dust protection of multi-way valves extremely important.

[0003] The seal between the traditional multi-way valve stem and valve body relies solely on the sealing ring on the inner diameter surface of the sealing end and the valve stem seal. This is only a single layer of protection, and its leakage and dust prevention capabilities are relatively general. Repairs and replacements are often required, which increases users' costs and reduces work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a novel multi-way valve with high sealing performance and easy maintenance.

[0005] The purpose of the utility model is achieved as follows: a new type of multi-way valve, including a valve body and a valve stem placed in the valve body, an insertion channel is provided in the valve body, the valve body is placed in the insertion channel, sealing ends are provided on both sides of the insertion channel to abut against the valve stem, a left sealing plate is provided on the valve stem located on the left side of the sealing end, and a right sealing plate is provided on the valve stem located on the right side of the sealing end, and a sealing sleeve is provided in the insertion channel outside the left sealing plate and the right sealing plate; a limiting plate is provided at the right end of the valve stem, a spring group is provided on the valve stem on the right side of the limiting plate, the other end of the spring group abuts against the sealing cover, and the sealing cover is connected to the valve body by bolts; a handle is provided at the left end of the valve stem.

[0006] Preferably, the spring group is composed of two groups of inner and outer springs, and the limiting plate is provided with a fixing groove matching the spring group.

[0007] Preferably, the right sealing plate is integrally connected to the valve stem, and the left sealing plate is threadedly connected to the valve stem.

[0008] Preferably, a threaded column is provided on the left part of the valve stem, the diameter of the threaded column is smaller than the diameter of the valve stem, and a limiting step is formed at the junction of the threaded column and the valve stem; the left sealing plate is composed of an annular plate and a fixed cylinder, and the inner diameter surface of the fixed cylinder is provided with an internal thread for rotationally docking with the threaded column.

[0009] Preferably, when the right sealing plate on the valve stem contacts the sealing end, the left sealing end contacts the sealing sleeve, and the valve stem and the valve port in the valve body are in a closed state; when the left sealing plate on the valve stem contacts the sealing end, the right sealing end contacts the sealing sleeve, and the valve stem and the valve port in the valve body are in an open state.

[0010] Preferably, the inner end surface of the sealing sleeve, the outer end surface of the sealing end, and both sides of the left sealing plate and the right sealing plate are all provided with a rubber layer.

[0011] Preferably, an O-ring and a dust ring are sequentially provided on the inner diameter surface of the sealing sleeve from the inside to the outside.

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

[0013] 1. The left sealing plate, right sealing plate and sealing sleeve are set. Compared with the traditional sealing structure (which is only a sealing structure between the sealing end and the valve stem), it has two more sealing structures, which greatly reduces the leakage of internal liquid and also greatly prevents the entry of external dust;

[0014] 2. The spring is placed outside the valve body and can be directly disassembled and replaced during maintenance, which is more convenient and quicker than the built-in structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Among them, 1 valve body, 2 valve stem, 201 threaded column, 3 insertion channel, 4 sealing end, 5 left sealing plate, 501 annular plate, 502 fixed cylinder, 6 right sealing plate, 7 sealing sleeve, 8 limit plate, 801 fixed groove, 9 spring group, 10 sealing cover, 11 handle, 12 rubber layer, 13 O-ring, 14 dust ring. DETAILED DESCRIPTION

[0017] 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 content disclosed in this specification.

[0018] 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.

[0019] 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.

[0020] like Figure 1 As shown, a new multi-way valve includes a valve body 1 and a valve stem 2 placed in the valve body 1. An insertion channel 3 is provided in the valve body 1, and the valve body 1 is placed in the insertion channel 3. Sealing ends 4 are provided on both sides of the insertion channel 3 to abut against the valve stem 2. A left sealing plate 5 is provided on the valve stem on the left side of the sealing end 4, and a right sealing plate 6 is provided on the valve stem on the right side of the sealing end 4. A sealing sleeve 7 is provided in the insertion channel 3 outside the left sealing plate 5 and the right sealing plate 6; a limiting plate 8 is provided at the right end of the valve stem 2, and a spring group 9 is provided on the valve stem on the right side of the limiting plate 8, and the other end of the spring group 9 abuts against the sealing cover 10, which is connected to the valve body 1 by bolts; a handle 11 is provided at the left end of the valve stem 2.

[0021] The spring group 9 is composed of two groups of inner and outer springs. A fixing groove 801 matching the spring group 9 is provided on the limit plate 8. The double springs can greatly improve the restoring force. At the same time, the external placement of the springs is convenient for later replacement.

[0022] The right sealing plate 6 is integrally connected to the valve stem 2, and the left sealing plate 5 is threadedly connected to the valve stem. When inserted, it is inserted from the left end of the valve stem, and then the sealing sleeve is screwed into the left end of the valve stem to complete the assembly.

[0023] A threaded column 201 is provided on the left part of the valve stem 2. The diameter of the threaded column 201 is smaller than the diameter of the valve stem 2. A limiting step is formed at the junction of the threaded column 201 and the valve stem 2. The left sealing plate 5 is composed of an annular plate 501 and a fixed cylinder 502. The inner diameter surface of the fixed cylinder 502 is provided with an internal thread for rotationally docking with the threaded column 201. The structure of the fixed cylinder facilitates the left sealing plate to be screwed in as a whole to conflict with the limiting step, and it can be disassembled to facilitate the insertion of the valve stem as a whole.

[0024] When the right sealing plate 6 on the valve stem 2 conflicts with the sealing end 4, the left sealing plate 5 conflicts with the sealing sleeve 7, and the valve stem and the valve port in the valve body are in a closed state; when the left sealing plate 5 on the valve stem conflicts with the sealing end 7, the right sealing plate 6 conflicts with the sealing sleeve 7, and the valve stem and the valve port in the valve body are in an open state, and operating space is reserved for the left sealing plate and the right sealing plate to ensure the opening and closing of the valve port.

[0025] The inner end surface of the sealing sleeve 7, the outer end surface of the sealing end 4 and both sides of the left sealing plate 5 and the right sealing plate 6 are provided with a rubber layer 12. After the left sealing plate and the right sealing plate come into contact with the sealing sleeve or the sealing end, the rubber layer provides a second layer of sealing.

[0026] An O-ring 13 and a dust ring 14 are sequentially arranged on the inner diameter surface of the sealing sleeve 7 from the inside to the outside. The arranged O-ring can form a contact with the valve stem to complete the third seal, further ensuring the sealing between the valve stem and the sealing sleeve to prevent internal liquid leakage.

[0027] The working principle of the utility model is explained as follows: when in use, the valve stem is driven by the handle, and when the right sealing plate on the valve stem contacts the sealing end, the valve stem and the valve port in the valve body are in a closed state; when the left sealing plate on the valve stem contacts the sealing end, the valve stem and the valve port in the valve body are in an open state; multiple seals are formed between the left sealing plate, the right sealing plate and the sealing sleeve and the valve stem, which greatly reduces the risk of internal liquid leakage and also improves dust resistance.

[0028] 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 new type of multi-way valve, characterized in that: The closure of the valve stem is constructed so that the closure is closed and the closure is closed after the closure is opened, and the closure is closed after the closure is opened.

2. A novel multi-way valve according to claim 1, characterized in that: The spring group is composed of two groups of inner and outer springs, and the limit plate is provided with a fixing groove matching the spring group.

3. A novel multi-way valve according to claim 1, characterized in that: The right sealing plate is connected to the valve stem in an integral manner, and the left sealing plate is connected to the valve stem by threads.

4. A novel multi-way valve according to claim 1, characterized in that: A threaded column is provided on the left part of the valve stem, the diameter of the threaded column is smaller than the diameter of the valve stem, and a limiting step is formed at the junction of the threaded column and the valve stem; the left sealing plate is composed of an annular plate and a fixed cylinder, and the inner diameter surface of the fixed cylinder is provided with an internal thread for rotationally docking with the threaded column.

5. A novel multi-way valve according to claim 1, characterized in that: When the right sealing plate on the valve stem contacts the sealing end, the left sealing end contacts the sealing sleeve, and the valve stem and the valve port in the valve body are in a closed state; when the left sealing plate on the valve stem contacts the sealing end, the right sealing end contacts the sealing sleeve, and the valve stem and the valve port in the valve body are in an open state.

6. A novel multi-way valve according to claim 1, characterized in that: The inner end surface of the sealing sleeve, the outer end surface of the sealing end and both sides of the left sealing plate and the right sealing plate are all provided with rubber layers.

7. A novel multi-way valve according to claim 1, characterized in that: An O-ring and a dust ring are sequentially arranged on the inner diameter surface of the sealing sleeve from the inside to the outside.

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