Hollow valve element of multi-position multi-channel valve and auxiliary correcting tool of hollow valve element

Abstract

The utility model discloses a hollow valve element of a multi-position multi-channel valve and an auxiliary correcting tool of the hollow valve element, and belongs to the technical field of valves. The hollow valve element comprises a plurality of bosses arranged in parallel, every two adjacent bosses are fixedly connected through a hollow pipe, the boss located between every two adjacent hollow pipes is called a middle boss, the middle boss is composed of an inner ring and an outer ring, the inner ring is coaxially arranged in the outer ring in a sleeved mode in a detachable mode, and the outer ring is fixedly connected with the inner ring in a sleeved mode. Thread glue is filled to limit relative movement and seal the gap; one adjacent hollow pipe is fixedly connected with the inner ring, and the other hollow pipe is fixedly connected with the outer ring; the inner diameter of the inner ring is larger than that of the hollow pipe. The middle boss is divided into the detachable inner ring and the detachable outer ring, the valve element is designed in a segmented mode, the interior of each segment is provided with a stepped hole, manufacturing is convenient, and the quality of the valve element is reduced. In addition, all the sections are connected in a detachable mode, later assembling and adjusting are facilitated, it is ensured that all the sections are centered, and the serious eccentricity problem is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology and also relates to the field of valve processing technology, specifically a hollow valve core of a multi-position multi-channel valve and its auxiliary correction tool. Background Technology

[0002] Multi-position multi-way valves are relatively complex valves that enable fluid switching between multiple channels, playing a vital role in industry. Traditional multi-position multi-way valves mainly consist of a valve body and a valve core. The valve body is designed with a multi-channel structure, serving as the fluid inlet and outlet. The valve core moves within the valve body, thereby cutting off or connecting these channels to ensure precise control of fluid flow. Figure 1 The two-position three-way valve shown has two inlets and one outlet. By moving the valve core, each inlet can be individually connected to the outlet. The bosses on the valve core are used to change the fluid flow direction; the more channels there are, the more bosses are needed. Currently, most multi-position multi-way valves on the market use a solid valve core structure. This design gives the valve core high strength, but it also increases its mass. Therefore, some devices use a hollow valve core, such as... Figure 2 As shown, this can significantly reduce the mass of the valve core and save operating costs (by reducing the power consumption of moving the valve core). This advantage is particularly significant for valve cores with a large number of bosses. In actual manufacturing, hollow parts are usually formed by drilling, which results in hollow parts often being through holes of equal diameter. The thickness of the boss part is significantly higher than that of other parts. However, the boss is located between two hollow tubes with smaller inner diameters. Further milling to enlarge the diameter hole inside the boss requires the milling cutter to pass through the hollow tube and then turn inside the boss to cut the inner wall of the boss. This results in cumbersome operation and high cost. Therefore, the hollow parts of the valve core are currently all through holes of equal diameter, and there is still material inside the boss that can be further cut, that is, there is room to further reduce the mass of the valve core. Utility Model Content

[0003] To address the aforementioned issues and further reduce the weight of the valve core, this invention provides a hollow valve core for a multi-position, multi-channel valve. The central boss is divided into a detachable inner ring and an outer ring, thus segmenting the valve core with the central boss as the boundary. Each segment has stepped holes that are easy to machine, thereby increasing the cavity volume of the boss portion at low cost and reducing the weight of the valve core. At the same time, the segments of the valve core are connected by threaded adhesive for easy assembly.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] A hollow valve core for a multi-position, multi-channel valve includes multiple parallel-arranged bosses, with adjacent bosses fixedly connected by a hollow tube, characterized in that:

[0006] The boss located between two adjacent hollow tubes is called the intermediate boss. The intermediate boss consists of two parts, namely an inner ring and an outer ring. The inner ring is detachably coaxially fitted into the outer ring, and the space between the inner and outer rings is filled with thread-locking adhesive to restrict their relative movement and seal the gap between them. One of the two adjacent hollow tubes is fixedly connected to the inner ring, and the other is fixedly connected to the outer ring.

[0007] The inner diameter of the inner ring is larger than the inner diameter of the hollow tube.

[0008] In one specific embodiment of this utility model, the inner ring and the outer ring are connected by a thread.

[0009] In one specific embodiment of this utility model, an annular sealing ring is arranged on the outer wall of the outer ring.

[0010] The hollow valve core of this utility model is composed of multiple segments connected in a detachable manner. This results in gaps between adjacent segments, causing the centers of adjacent segments to not necessarily align perfectly. When the valve core has a large number of segments, the misalignment problem becomes more pronounced, with the head and tail not clearly on a straight line. Such misalignment increases the resistance to valve core movement when installed in the valve body, necessitating correction. Therefore, another objective of this utility model is to provide an auxiliary correction tool for the hollow valve core of a multi-position, multi-channel valve, used to correct the verticality of the aforementioned hollow valve core. The correction tool includes:

[0011] Base;

[0012] A guide mechanism supported on a base is used to guide the valve core to move along a straight path;

[0013] The power mechanism, mounted on the base, is used to drive the valve core to move along the guide mechanism.

[0014] In one specific embodiment of this utility model, the guide mechanism is a positioning cylinder with a straight hole inside, and the inner wall of the positioning cylinder is clearance-fitted with the outer wall of the outer ring.

[0015] As one specific embodiment of this utility model, the power mechanism includes:

[0016] Supports mounted on the base;

[0017] A threaded cylinder arranged axially along the guide mechanism and threadedly connected to the bracket, with its centerline coinciding with the centerline of the valve core;

[0018] A rotary power device that drives the threaded cylinder to rotate.

[0019] Compared with the prior art, at least one specific embodiment of this utility model has the following advantages:

[0020] The hollow valve core of this utility model divides the central boss into detachable inner and outer rings, thereby segmenting the valve core with the central boss as the boundary. Each segment has stepped holes inside, which facilitates manufacturing. At the same time, the stepped hole configuration can increase the cavity volume of the boss part and reduce the weight of the valve core. In addition, the valve core segments are connected in a detachable manner, which facilitates later assembly. Thread adhesive is used to fix each segment, which makes it easy to adjust the position between the segments during the assembly process to make them aligned and avoid serious eccentricity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the working state of a two-position three-way valve in the prior art;

[0022] Figure 2 This is a half-sectional view of a hollow valve core in the prior art;

[0023] Figure 3 This is a perspective view of a specific embodiment of the hollow valve core of this utility model;

[0024] Figure 4 yes Figure 3 A half-section view;

[0025] Figure 5 yes Figure 3 A 3D view of a section of the valve core;

[0026] Figure 6 This is a schematic diagram of the structure of the auxiliary correction tool of this utility model;

[0027] In the diagram: Boss 100; Hollow tube 200; Base 300; Guide mechanism 400;

[0028] 110 for the central boss; 510 for the bracket; 520 for the threaded cylinder;

[0029] Inner ring 111; outer ring 112. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0031] Example

[0032] Please refer to Figures 3-5This illustration shows the structure of a specific embodiment of the hollow valve core of the multi-position multi-channel valve of this utility model. The hollow valve core includes a plurality of parallel hollow bosses 100. Adjacent bosses 100 are fixedly connected by hollow tubes 200. The boss 100 located between two adjacent hollow tubes 200 is called an intermediate boss 110. The intermediate boss 110 includes an inner ring 111 and an outer ring 112. The inner ring 111 is detachably coaxially sleeved in the outer ring 112, and the space between the inner ring 111 and the outer ring 112 is filled with thread-locking adhesive to restrict relative movement between the two and seal the gap between them. One of the two adjacent hollow tubes 200 is fixedly connected to the inner ring 111, and the other is fixedly connected to the outer ring 112. The inner diameter of the inner ring 111 is larger than the inner diameter of the hollow tube 200.

[0033] This utility model, through the separate design of inner ring 111 and outer ring 112, allows the middle boss 110 to be directly machined into a stepped hole structure by drilling. This structure allows the inner ring 111 and hollow tube 200 to be machined into cavities of different inner diameters before assembly, thereby increasing the cavity volume within the boss 100 to reduce the valve core mass. Moreover, such stepped holes can be directly formed by drilling, which is simple to operate and low in cost. In addition, the valve core segments are fixed by thread-locking adhesive, which cures at room temperature after isolating oxygen. Before curing, precise alignment can be achieved by adjusting the gap between the inner ring 111 and the outer ring 112, avoiding the serious eccentricity problem that easily occurs during multi-segment assembly. This has the advantages of low cost and long adjustable time compared to welding. (It should be noted that thread-locking adhesive is an anaerobic adhesive, which can gradually cure at room temperature after isolating oxygen to fix the inner and outer rings together. Before curing, the position of the two can be adjusted by adjusting the gap between the inner and outer rings to make them aligned. Therefore, the adjustable time is long. When using welding, once welded, the relative position between the two segments is fixed and difficult to adjust unless cut off and re-welded.)

[0034] In some embodiments, the inner ring 111 and the outer ring 112 are connected by threads. Threading adhesive is directly applied to the outer wall of the inner ring 111 or the inner wall of the outer ring 112, and then the two are connected by threads to fill the space between the inner and outer rings. This achieves both sealing and oxygen isolation to promote curing.

[0035] In some embodiments, the outer wall of the outer ring 112 is provided with an annular groove and a sealing ring is installed thereon to enhance the sealing effect. To facilitate the installation of the sealing ring, an annular groove can be provided on the annular outer wall of the outer ring for installing the sealing ring.

[0036] The hollow valve core of this invention is composed of multiple segments connected in a detachable manner. This results in gaps between adjacent segments, causing the centers of adjacent segments to not necessarily align perfectly. When the valve core has a large number of segments, the misalignment problem becomes more pronounced. This leads to the head boss 100 and the tail middle boss 110 of the valve core being significantly misaligned. When installed in the valve body in this way, the bending of the valve core increases the radial pressure on the valve body, thereby increasing the resistance to valve core movement. Therefore, it is necessary to correct this misalignment. This invention provides an auxiliary correction tool for the hollow valve core of a multi-position, multi-channel valve, used for… The hollow valve core is vertically corrected using a tool including a base 300, a guide mechanism 400 supported on the base 300, and a power mechanism. The guide mechanism 400 moves the valve core along a straight path, and the power mechanism pushes the valve core along the guide mechanism 400. In use, thread-locking adhesive is applied to the outer wall of the inner ring 111 or the inner wall of the outer ring 112. Then, the inner ring 111 and outer ring 112 are threaded together. The power mechanism then pushes the entire boss 100 along the guide mechanism 400. Since the guide mechanism 400 is straight, it ensures that the entire assembled valve core moves in a straight line, thus maintaining its straightness. In specific implementation, it can be done as follows: Figure 6 As shown, a positioning cylinder is selected as the guide mechanism 400. The interior of the positioning cylinder has a straight hole, and the inner wall of the positioning cylinder is clearance-fitted with the outer wall of the outer ring 112. The length of the positioning cylinder is sufficient to ensure that the residence time of the thread-locking adhesive within it is greater than its curing time. In this way, the thread-locking adhesive leaving the positioning cylinder is completely cured, and the shape of the valve core leaving the positioning cylinder is also fixed. The power mechanism can also be selected as needed, for example... Figure 6 As shown, the power mechanism includes a bracket 510, a threaded cylinder 520, and a rotary power device. The bracket 510 is fixed on the base 300. The threaded cylinder 520 is axially arranged along the guide mechanism 400 and threadedly connected to the bracket 510. The centerline of the threaded cylinder 520 coincides with the centerline of the valve core, allowing its end facing the valve core to abut against the valve core and apply axial thrust. The rotary power device (not shown) drives the threaded cylinder to rotate, thereby pushing the threaded cylinder 520 to move. In use, when the threaded cylinder 520 moves towards the valve core, it can push the valve core to move along the guide mechanism 400. When the threaded cylinder 520 moves away from the valve core, it can create a space for installing the next valve core tube segment. After installing the next valve core tube segment, the threaded cylinder 520 is used again to push the valve core to move it, so that all valve core tube segments are sent to the guide mechanism 400 one by one and straightened to be straight.

[0037] The above are merely preferred embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the embodiments of this utility model should be included within the protection scope of this utility model.

Claims

1. A hollow valve core for a multi-position, multi-channel valve, comprising multiple parallel-arranged bosses, with adjacent bosses fixedly connected by a hollow tube, characterized in that: The boss located between two adjacent hollow tubes is called the intermediate boss. The intermediate boss consists of two parts, an inner ring and an outer ring. The inner ring is detachably coaxially fitted into the outer ring, and the space between the inner ring and the outer ring is filled with thread-locking adhesive to restrict relative movement between them and seal the gap between them. One of the two adjacent hollow tubes is fixedly connected to the inner ring, and the other is fixedly connected to the outer ring. The inner diameter of the inner ring is larger than the inner diameter of the hollow tube.

2. The hollow valve core of the multi-position multi-channel valve according to claim 1, characterized in that, The inner ring and the outer ring are connected by a thread.

3. The hollow valve core of the multi-position multi-channel valve according to claim 1, characterized in that, The outer wall of the outer ring is provided with an annular sealing ring.

4. An auxiliary straightening tool for the hollow valve core of a multi-position multi-channel valve, used to straighten the hollow valve core of the multi-position multi-channel valve according to any one of claims 1-3, characterized in that, The corrective tool includes: Base; A guide mechanism supported on the base is used to guide the valve core to move along a straight path; A power mechanism supported on the base is used to drive the valve core to move along the guide mechanism.

5. The auxiliary correction tool for the hollow valve core of a multi-position multi-channel valve according to claim 4, characterized in that, The guiding mechanism is a positioning cylinder, the inside of which is a straight hole, and the inner wall of the positioning cylinder is clearance-fitted with the outer wall of the outer ring.

6. The auxiliary correction tool for the hollow valve core of a multi-position multi-channel valve according to claim 4, characterized in that, The power mechanism includes: The support mounted on the base; A threaded cylinder arranged axially along the guide mechanism and threadedly connected to the bracket, wherein the centerline of the threaded cylinder coincides with the centerline of the valve core; A rotary power device that drives the threaded cylinder to rotate.

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