Two-position five-way valve and pneumatic equipment

Abstract

The utility model discloses a two-position five-way valve and pneumatic equipment, and relates to the technical field of reversing valves, the two-position five-way valve comprises a valve body, a spacer bush and a valve rod, and a valve cavity and a plurality of air ports are formed in the valve body; a plurality of convex rings and a plurality of through holes are formed in the spacer bush, and the convex rings abut against the inner wall of the valve cavity; the through holes are located in the two sides of the spacer bush respectively. The convex rings and the through holes are alternately arranged along the length direction of the spacer bush; the valve rod penetrates through the spacer bush, and the side, back on to the valve body, of the convex ring is in sliding connection with the valve rod; a plurality of air channels are formed in the valve rod, and each air channel is used for being communicated with the two through holes in the two opposite sides of the spacer bush. According to the technical scheme, the spacer bush is additionally arranged between the valve body and the valve rod, meanwhile, the air channel is formed in the valve rod, air path change can be achieved after the push rod is pushed, structures such as the protruding ring and the through hole on the spacer bush and the air channel in the push rod are easy to machine, and therefore a groove structure does not need to be machined in the valve body, the machining precision requirement is lowered, and the machining efficiency is improved. And the difficulty of batch production and manufacturing is reduced.

Description

Technical Field

[0001] This utility model relates to the field of directional valve technology, and in particular to a two-position five-way valve and a pneumatic device. Background Technology

[0002] In industrial automation and fluid control systems, the 2-position 5-way valve is a key control element widely used for the precise control of pneumatic equipment, such as the driving and control of cylinders. Its core function is to achieve bidirectional motion control of pneumatic equipment by switching air paths, thereby meeting complex industrial automation needs.

[0003] Currently, the mainstream two-position five-way valve structure typically includes key components such as the valve body, valve stem, and O-ring. The O-ring is fixed within a groove on the valve stem to form a seal, ensuring the air passage is airtight. The valve body's interior requires the machining of specific groove structures to create air chambers, meeting the needs of airflow and control. However, this design of creating grooves on the valve body and valve stem is quite complex, requiring extremely high machining precision, which makes mass production difficult. Utility Model Content

[0004] The main purpose of this utility model is to propose a two-position five-way valve and a pneumatic device, which aims to reduce the machining accuracy requirements of the two-position five-way valve, thereby reducing the difficulty of mass production.

[0005] To achieve the above objectives, the present invention proposes a two-position five-way valve, comprising:

[0006] A valve body having a valve cavity and a plurality of air ports, each of the air ports being connected to the valve cavity;

[0007] A spacer sleeve having multiple convex rings and multiple through holes, the convex rings abutting against the inner wall of the valve cavity; each through hole being located on both sides of the spacer sleeve and communicating with the air port; the convex rings and through holes are alternately arranged along the length of the spacer sleeve; and

[0008] A valve stem is inserted into the spacer, and the convex ring is slidably connected to the valve stem on the side facing away from the valve body. The valve stem has a plurality of air passages spaced apart along the length of the valve stem, and each air passage is used to connect two through holes on opposite sides of the spacer.

[0009] In one embodiment, the two-position five-way valve further includes a sealing assembly, which includes a plurality of first sealing rings, each of which is disposed around the inner wall of a convex ring and is slidably connected to the valve stem.

[0010] In one embodiment, an inner annular groove is formed on the inner wall of each of the convex rings, and each of the first sealing rings is located in one of the inner annular grooves and abuts against the groove wall of the inner annular groove.

[0011] In one embodiment, the sealing assembly further includes a plurality of second sealing rings, each of the second sealing rings being disposed around the outer wall of one of the convex rings and abutting against the inner wall of the valve cavity.

[0012] In one embodiment, the outer wall of each of the protruding rings is formed with an outer ring groove, and each of the second sealing rings is located in one of the outer ring grooves and abuts against the groove wall of the outer ring groove.

[0013] In one embodiment, the valve body further comprises a stop ring located within the valve cavity; the stop ring is used to limit the spacer.

[0014] In one embodiment, the inner diameter of the stop ring is defined as R1, the maximum diameter of the valve stem is R2, and the outer diameter of the spacer is R3, where R2 < R1 < R3.

[0015] In one embodiment, the first sealing ring is made of rubber; and / or, the second sealing ring is made of rubber.

[0016] In one embodiment, the valve stem has a plurality of connecting annular grooves, and the groove wall of each connecting annular groove and the inner wall of the spacer form a gas passage.

[0017] This utility model also proposes a pneumatic device, including an air source and any of the above-mentioned two-position five-way valves, with each of the air ports connected to the air source.

[0018] In the technical solution of this utility model, a two-position five-way valve includes a valve body, a spacer, and a valve stem. The valve body forms a valve cavity and multiple air ports, each air port communicating with the valve cavity. The spacer forms multiple convex rings and multiple through holes, with the convex rings abutting against the inner wall of the valve cavity. Each through hole is located on both sides of the spacer and is used to communicate with the air ports. The convex rings and through holes are alternately arranged along the length of the spacer. The valve stem passes through the spacer, with the side of the convex ring facing away from the valve body slidably connected to the valve stem. The valve stem forms multiple air passages spaced apart along its length, each air passage connecting two through holes on opposite sides of the spacer. In the technical solution of this utility model, by adding a spacer between the valve body and the valve stem, and simultaneously opening air passages on the valve stem, the air path can be changed after the push rod is pushed. The convex rings and through holes on the spacer, as well as the air passages on the push rod, are easy to process, thus eliminating the need to process specific groove structures inside the valve body, thereby reducing the processing precision requirements and reducing the difficulty of mass production of the two-position five-way valve. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of an embodiment of the two-position five-way valve provided by this utility model;

[0021] Figure 2 for Figure 1 Sectional view along AA;

[0022] Figure 3 This is a schematic diagram of another embodiment of a two-position five-way valve;

[0023] Figure 4 This is a schematic diagram of the partition sleeve in a two-position five-way valve.

[0024] Explanation of icon numbers:

[0025] label name label name 1000 Two-position five-way valve 21a Inner ring groove 1 Valve body 21b outer ring groove 1a valve chamber 2a Through hole 1b air inlet 3 valve stem 11 Stop ring 3a Connecting annular groove 2 spacer 41 First sealing ring 21 convex ring 42 Second sealing ring

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This utility model proposes a two-position five-way valve 1000.

[0031] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 In one embodiment of this utility model, the two-position five-way valve 1000 includes a valve body 1, a spacer 2, and a valve stem 3. The valve body 1 forms a valve cavity 1a and a plurality of air ports 1b, each air port 1b communicating with the valve cavity 1a. The spacer 2 forms a plurality of convex rings 21 and a plurality of through holes 2a, the convex rings 21 abutting against the inner wall of the valve cavity 1a. Each through hole 2a is located on both sides of the spacer 2 and is used to communicate with the air ports 1b. Each convex ring 21 and each through hole 2a are alternately arranged along the length direction of the spacer 2. The valve stem 3 passes through the spacer 2, and the side of the convex ring 21 facing away from the valve body 1 is slidably connected to the valve stem 3. The valve stem 3 forms a plurality of air passages spaced apart along the length direction of the valve stem 3, each air passage being used to connect two through holes 2a on opposite sides of the spacer 2.

[0032] In the technical solution of this utility model, a spacer 2 is added between the valve body 1 and the valve stem 3, and an air passage is opened on the valve stem 3. This enables the air passage to change after the push rod is pushed. The convex ring 21 and through hole 2a on the spacer 2 and the air passage on the push rod are easy to process. Thus, there is no need to process a specific groove structure inside the valve body 1, thereby reducing the processing accuracy requirements and reducing the difficulty of mass production of the two-position five-way valve 1000.

[0033] In one embodiment of this utility model, the valve body 1 has five air ports 1b, and correspondingly, the spacer 2 has five protruding rings 21 and ten through holes 2a, and the valve stem 3 has two air passages.

[0034] The sealing assembly includes multiple first sealing rings 41. In one embodiment of this utility model, the two-position five-way valve 1000 further includes a sealing assembly comprising five first sealing rings 41. Each first sealing ring 41 is disposed around the inner wall of a convex ring 21 and is slidably connected to the valve stem 3. By providing a first sealing ring 41 on the inner wall of each convex ring 21 and movably connecting it to the valve stem 3, gas leakage between the valve stem 3 and the spacer 2 can be effectively prevented. This sealing design ensures the sealing reliability during gas path switching, avoids pressure drop or functional failure caused by gas leakage, and thus significantly improves the overall sealing performance of the two-position five-way valve 1000. At the same time, the first sealing rings 41 can effectively isolate gases between different gas paths, avoid malfunctions or abnormal functions caused by gas cross-contamination, and thus improve the accuracy and response speed of the two-position five-way valve 1000 during gas path switching.

[0035] In one embodiment of this utility model, an inner ring groove 21a is formed on the inner wall of each convex ring 21, and each first sealing ring 41 is located in an inner ring groove 21a and abuts against the groove wall of the inner ring groove 21a. Placing the first sealing ring 41 in the inner ring groove 21a can effectively confine the first sealing ring 41 within the inner ring groove 21a when the valve stem 3 is moved, so that the first sealing ring 41 can maintain a stable position during the movement of the valve stem 3, avoiding sealing failure due to displacement or deformation of the first sealing ring 41, and further improving the sealing performance of the two-position five-way valve 1000 during air circuit switching; similarly, installing the first sealing ring 41 in the inner ring groove 21a can simplify the assembly process. During assembly, the first sealing ring 41 can be directly installed into the inner ring groove 21a without additional fixing measures, reducing assembly time and improving production efficiency.

[0036] The sealing assembly also includes multiple second sealing rings 42. In one embodiment of the present invention, the sealing assembly further includes five second sealing rings 42, each second sealing ring 42 being disposed around the outer wall of a convex ring 21 and abutting against the inner wall of the valve cavity 1a. By providing first sealing rings 41 and second sealing rings 42 on the inner and outer walls of the convex ring 21 respectively, a double sealing structure is formed. This design not only enhances the reliability of the seal but also further reduces the possibility of gas leakage; the first sealing ring 41 mainly prevents leakage between the valve stem 3 and the spacer 2, while the second sealing ring 42 prevents gas leakage from the gap between the valve cavity 1a and the spacer 2. This all-around sealing design ensures the integrity of the seal during gas path switching.

[0037] In one embodiment of this utility model, an outer ring groove 21b is formed on the outer wall of each convex ring 21, and each second sealing ring 42 is located in an outer ring groove 21b and abuts against the groove wall of the outer ring groove 21b. Placing the second sealing ring 42 in the outer ring groove 21b can effectively confine the second sealing ring 42 within the outer ring groove 21b when the valve stem 3 is moved, so that the second sealing ring 42 can maintain a stable position during the movement of the valve stem 3, avoiding sealing failure due to displacement or deformation of the second sealing ring 42. Similarly, installing the second sealing ring 42 in the outer ring groove 21b can simplify the assembly process. During assembly, the second sealing ring 42 can be directly fitted into the outer ring groove 21b without additional fixing measures, reducing assembly time and improving production efficiency.

[0038] In one embodiment of this utility model, the valve body 1 further includes a stop ring 11 located within the valve cavity 1a; the stop ring 11 serves to limit the spacer 2. The presence of the stop ring 11 provides a clear installation position for the spacer 2, reducing errors during assembly. During assembly, the spacer 2 can be accurately installed into the position of the stop ring 11, ensuring assembly accuracy. Simultaneously, the stop ring 11, located within the valve cavity 1a, can precisely limit the spacer 2. This design ensures that the spacer 2 is fixed in position within the valve cavity 1a, preventing displacement or loosening of the spacer 2 due to external forces or vibrations, thereby improving the stability of the pneumatic switching of the two-position five-way valve 1000.

[0039] In one embodiment of this utility model, the inner diameter of the stop ring 11 is defined as R1, the maximum diameter of the valve stem 3 is R2, and the outer diameter of the spacer 2 is R3, where R2 < R1 < R3. Since R2 < R1, meaning the maximum diameter of the valve stem 3 is smaller than the inner diameter of the stop ring 11, the valve stem 3 can slide freely within the stop ring 11 without being obstructed, making the movement of the valve stem 3 more flexible and thus improving the response speed of the air circuit switching. Since R1 < R3, meaning the inner diameter of the stop ring 11 is smaller than the outer diameter of the spacer 2, the spacer 2 can be effectively limited by the stop ring 11, ensuring that the position of the spacer 2 within the valve cavity 1a is fixed, preventing excessive movement of the spacer 2, thereby improving the stability of the air circuit switching of the two-position five-way valve 1000.

[0040] It is understood that the material of the first sealing ring 41 can be silicone, rubber, or other sealing materials; similarly, the material of the second sealing ring 42 can be silicone, rubber, or other sealing materials. In one embodiment of this utility model, both the first sealing ring 41 and the second sealing ring 42 are made of rubber. Rubber has excellent elasticity, which can form a tight seal between the valve stem 3 and the spacer 2, and between the spacer 2 and the valve body 1, thereby maintaining a good sealing effect during the movement of the valve stem 3; because rubber has higher mechanical strength than silicone, it has better dynamic sealing performance than silicone, and its sealing performance is better when the valve stem 3 moves. In summary, rubber is preferred as the material of the first sealing ring 41 and the second sealing ring 42.

[0041] The air passage can be formed on the valve stem 3 by either opening a through hole 2a in the valve stem 3 or by opening a connecting annular groove 3a on the valve stem 3. In one embodiment of this utility model, the valve stem 3 has two connecting annular grooves 3a, and the groove wall of each connecting annular groove 3a and the inner wall of the spacer 2 enclose an air passage. Opening a connecting annular groove 3a on the valve stem 3 can ensure that the through hole 2a can communicate with the air passage when the valve stem 3 reaches the set position, avoiding the situation where the air passage and the through hole 2a are not aligned due to the rotation of the valve stem 3, thereby improving the stability of the switching air path of the two-position five-way valve 1000.

[0042] This utility model also proposes a pneumatic device, which includes an air source and a two-position five-way valve 1000. The specific structure of the two-position five-way valve 1000 is as described in the above embodiments. Since this pneumatic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Each air port 1b is connected to the air source.

[0043] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A two-position five-way valve (1000), characterized in that, include: A valve body (1) is formed with a valve cavity (1a) and a plurality of air ports (1b), each of the air ports (1b) being connected to the valve cavity (1a); A spacer (2) having multiple protruding rings (21) and multiple through holes (2a), wherein the protruding rings (21) abut against the inner wall of the valve cavity (1a); each of the through holes (2a) is located on both sides of the spacer (2) and is used to communicate with the air port (1b); each of the protruding rings (21) and each of the through holes (2a) is alternately arranged along the length of the spacer (2); and The valve stem (3) passes through the spacer (2), and the convex ring (21) is slidably connected to the valve stem (3) on the side facing away from the valve body (1). The valve stem (3) has a plurality of air passages spaced apart along the length of the valve stem (3), and each air passage is used to connect the two through holes (2a) on opposite sides of the spacer (2).

2. The two-position five-way valve (1000) as described in claim 1, characterized in that, The two-position five-way valve (1000) also includes a sealing assembly, which includes a plurality of first sealing rings (41), each of the first sealing rings (41) being disposed around the inner wall of a convex ring (21) and slidably connected to the valve stem (3).

3. The two-position five-way valve (1000) as described in claim 2, characterized in that, Each of the convex rings (21) has an inner ring groove (21a) formed on its inner wall. Each of the first sealing rings (41) is located in one of the inner ring grooves (21a) and abuts against the groove wall of the inner ring groove (21a).

4. The two-position five-way valve (1000) as described in claim 2, characterized in that, The sealing assembly further includes a plurality of second sealing rings (42), each of the second sealing rings (42) being disposed around the outer wall of a convex ring (21) and abutting against the inner wall of the valve cavity (1a).

5. The two-position five-way valve (1000) as described in claim 4, characterized in that, Each of the convex rings (21) has an outer ring groove (21b) formed on its outer wall, and each of the second sealing rings (42) is located in one of the outer ring grooves (21b) and abuts against the groove wall of the outer ring groove (21b).

6. The two-position five-way valve (1000) as described in claim 1, characterized in that, The valve body (1) also has a stop ring (11) located inside the valve cavity (1a); the stop ring (11) is used to limit the spacer (2).

7. The two-position five-way valve (1000) as described in claim 6, characterized in that, The inner diameter of the stop ring (11) is defined as R1, the maximum diameter of the valve stem (3) is defined as R2, and the outer diameter of the spacer (2) is defined as R3, where R2 < R1 < R3.

8. The two-position five-way valve (1000) as described in claim 4 or 5, characterized in that, The first sealing ring (41) is made of rubber; and / or the second sealing ring (42) is made of rubber.

9. The two-position five-way valve (1000) as described in any one of claims 1 to 7, characterized in that, The valve stem (3) has a plurality of connecting annular grooves 3a, and the groove wall of each connecting annular groove 3a is enclosed by the inner wall of the spacer (2) to form an air passage.

10. A pneumatic device, characterized in that, The pneumatic device includes an air source and a two-position five-way valve (1000) as described in any one of claims 1 to 9, and each of the air ports (1b) is connected to the air source.

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