Multi-way combination valve

Abstract

The application discloses a multi-pass combined valve, and belongs to the technical field of valves.The valve comprises a valve body, one common pipeline and a plurality of branch pipelines arranged in the valve body; the common pipeline penetrates the valve body along the straight center of the upper and lower end faces of the valve body, and the end of the common pipeline located on one end face of the valve body is a common port, and the end of the common pipeline located on the other end face of the valve body is a common valve cavity; the plurality of branch pipelines are respectively connected with the common pipeline in the valve body; the plurality of branch pipelines comprise one inclined pipeline and a plurality of straight-through pipelines; one end of each straight-through pipeline is perpendicularly connected with the common pipeline, and an angle alpha is formed between the inclined pipeline and the common pipeline, and 0°< alpha < 90°. The inclined pipeline cooperates with the grouped straight-through pipelines, so that the size of the intersection nodes can be reduced, the medium residues and the flow dead angle can be reduced, the flow resistance and the processing difficulty can be reduced, the space utilization rate and the manufacturing cost can be considered, and the multi-system flow demand can be adapted.

Description

Technical Field

[0001] This invention belongs to the field of valve technology, and specifically relates to a multi-way combination valve. Background Technology

[0002] A multi-way valve integrates a common pipeline and multiple branch channels within its valve body. The common pipeline is used for centralized transport and convergence of the medium, while each branch channel is used for diversion or switching of the medium. The intersection of each branch channel and the common pipeline naturally forms a cross node. Due to the convergence and structural superposition of the pipelines, this cross node alters the original linear structure of both the branch channels and the common pipeline, inevitably creating a recessed groove structure. When three or more branch channels simultaneously intersect the same node of the common pipeline, the depth, width, and volume of the groove increase significantly. This increased groove easily creates dead zones for medium flow, adversely affecting the smooth flow of the medium within the valve body. This not only causes stagnation and residue of the flowing medium in these dead zones, but also makes it difficult for the cleaning medium to fully penetrate the groove during valve body cleaning, failing to completely remove residual medium. Ultimately, this results in incomplete valve body cleaning, affecting the purity of subsequent medium transport and the valve body's service life.

[0003] In existing technologies, to alleviate the aforementioned problems of groove residue and cleaning, an optimized solution can be adopted: increasing the inner diameter of the common pipeline and reducing the inner diameter of the branch channels. By adjusting the pipeline size ratio to reduce the groove volume at the intersection, the problem of media residue can be improved to some extent. However, this solution has obvious technical limitations: On the one hand, when the size difference between the common pipeline and the branch channels exceeds a reasonable range, the medium flowing through the intersection will experience a sudden change in flow velocity due to the abrupt change in the flow cross-sectional area. This not only easily causes medium turbulence and pressure loss, but may also lead to uneven mixing of the medium, which is not conducive to the stable and accurate transmission of the medium. On the other hand, this size-differentiated design places higher demands on the machining precision of the valve body. It is necessary to accurately control the inner diameter, concentricity, and transition arc at the intersection of different pipelines, which greatly increases the difficulty of valve body machining and manufacturing, prolongs the production cycle, and increases production process costs and scrap rate. It is difficult to adapt to the actual application needs of large-scale production and high-precision working conditions.

[0004] Given the shortcomings of the existing technologies, there is an urgent need to design a new type of multi-way combination valve structure. By optimizing the structural design of the common pipeline, branch channels and intersection nodes in the valve body, the dead flow angles and residual hazards at the intersection nodes can be eliminated while avoiding excessive differences in pipeline size. At the same time, the processing and manufacturing difficulty can be reduced, so as to effectively solve the technical problems existing in the existing technologies and meet the multiple requirements of industrial scenarios for media delivery stability, valve body cleanliness and production economy. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-way combination valve to solve the technical problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention discloses a multi-way combination valve, including a valve body, and a common pipeline and multiple branch pipelines disposed within the valve body;

[0007] The common pipeline runs in a straight line through the center of the upper and lower end faces of the valve body. The end of the common pipeline located on one end face of the valve body is the common port, and the end of the common pipeline located on the other end face of the valve body is the common valve cavity. The multiple branch pipelines are respectively connected to the common pipeline within the valve body; the multiple branch pipelines include one inclined pipeline and multiple straight pipelines; One end of each straight pipe is perpendicularly connected to the common pipe, and the other end is the first inlet / outlet, which is located on the end face of the valve body where the common valve cavity is located; one end of each inclined pipe is connected to the bottom of the common valve cavity, and the other end is the second inlet / outlet, which is located on the end face of the valve body where the common port is located; the inclined pipe and the common pipe form an angle α, where 0° < α < 90°.

[0008] Furthermore, the inner diameter of the common conduit is larger than the inner diameter of the multiple straight conduits and inclined conduits.

[0009] Furthermore, the multiple straight-through pipelines are divided into N groups, namely the first group of straight-through pipelines, the second group of straight-through pipelines, ... the Nth group of straight-through pipelines. The straight-through pipelines in each group converge at the same position on the common pipeline, thereby forming N different intersection points on the common pipeline, namely the first intersection point, the second intersection point, ... the Nth intersection point, where N≥2.

[0010] Furthermore, a common solenoid valve is installed in the common valve chamber to control the on / off state of the common pipeline.

[0011] Furthermore, a branch valve chamber is provided on the side of the valve body, and each branch valve chamber is connected to a straight pipeline in a corresponding manner. A branch solenoid valve is installed in each branch valve chamber to independently control the opening and closing of the corresponding straight pipeline.

[0012] Furthermore, in the N groups of straight-through pipes, the number of straight-through pipes in each group is the same or different, in order to adapt to multi-system circulation scenarios with different flow requirements.

[0013] Furthermore, α = 40-50°. This angle range can effectively reduce flow resistance and improve media transport efficiency.

[0014] Furthermore, the inner diameter of the common conduit is 1.2-1.6 times that of the inner diameter of the straight conduit and the inclined conduit. This arrangement can increase the flow rate of the common conduit and prevent it from becoming a bottleneck.

[0015] Furthermore, with N=2, it is possible to balance the smaller size of the junction and the difficulty of processing, reduce the dead angle of medium flow, and ensure the machinability of the multi-way combination valve.

[0016] Compared with the prior art, the multi-way combination valve of the present invention has the following advantages: (1) The multi-way combination valve of the present invention is provided with an inclined pipeline, which, together with the centrally located common pipeline, can reduce the dead angle of medium flow and make the distance between the common pipeline and each straight pipeline equal, making it easy to achieve precise control of medium flow, control the processing difficulty, improve space utilization and reduce manufacturing costs.

[0017] (2) In this invention, the multi-way combination valve divides the straight pipeline into N groups. The straight pipelines of each group converge at the same position on the common pipeline, thereby forming N different intersection points on the common pipeline. This can reduce the size of the intersection node between the straight pipeline and the common pipeline, reduce the dead angle size, reduce the medium residue in the valve, and improve the accuracy of medium delivery.

[0018] (3) In this invention, the multi-way combination valve sets the tilt angle of the inclined pipeline, as well as the inner diameter of the common pipeline, the straight pipeline and the inclined pipeline, which can minimize the resistance to medium flow and reduce the residue of the medium. Attached Figure Description

[0019] Figure 1 First perspective view of a multi-way combination valve.

[0020] Figure 2 : Second perspective view of a multi-way combination valve.

[0021] Figure 3 Top view of a multi-way combination valve.

[0022] Figure 4 : Figure 3 A cross-sectional view along the middle BB.

[0023] Figure 5 : Figure 3 A cross-sectional view along the center CC.

[0024] Figure 6 : Figure 3 A sectional view along the middle DD.

[0025] Figure 7 Side view of a multi-way combination valve.

[0026] Figure 8 : Figure 7 A cross-sectional view along the middle section GG.

[0027] Figure 9 : Figure 7 A cross-sectional view along the middle HH.

[0028] Figure 10 : First perspective view of the multi-way combination valve after the solenoid valve is installed.

[0029] Figure 11 : Second perspective view of the multi-way combination valve after the solenoid valve is installed.

[0030] Figure 12 : Exploded view of the multi-way combination valve assembly after the solenoid valve is installed.

[0031] Among them, 1. Valve body; 2. Common pipeline; 3. Straight pipeline; 4. Inclined pipeline; 5. Common port; 6. Common valve chamber; 7. Common solenoid valve; 8. Branch valve chamber; 9. Branch solenoid valve; 10. First junction point; 11. Second junction point; 12. First inlet / outlet; 13. Second inlet / outlet; 21. Pipeline A; 22. Pipeline B. Detailed Implementation

[0032] The technical solution of the present invention will be described in detail below through specific embodiments.

[0033] Example 1 A multi-way combination valve includes a valve body 1, a common pipeline 2 and multiple branch pipelines disposed within the valve body 1. In this embodiment 1, the number of branch pipelines is 9, and the valve body 1 is configured as a platform structure with a regular octagonal end face.

[0034] The common pipeline 2 is arranged in a straight line and perpendicularly runs through the center of the upper and lower end faces of the valve body 1. One end of the common pipeline 2 located on one end face of the valve body 1 is the common port 5, and the other end of the common pipeline 2 located on the other end face of the valve body 1 is the common valve cavity 6. A common solenoid valve 7 is installed in the common valve cavity 6.

[0035] Nine branch pipes connect to the common pipe 2 within the valve body 1. These nine branch pipes include one inclined pipe 4 and eight straight pipes 3. One end of each of the eight straight pipes 3 intersects the common pipe 2 perpendicularly, while the other end serves as a first inlet / outlet 12 located on the end face of the valve body 1 where the common valve cavity 6 is located. The eight first inlets / outlets 12 are evenly arranged circumferentially around the common valve cavity 6. One end of the inclined pipe 4 connects to the bottom of the common valve cavity 6, while the other end serves as a second inlet / outlet 13 located on the end face of the valve body 1 where the common port 5 is located. An angle α exists between the inclined pipe 4 and the common pipe 2, where 0° < α < 90°. Preferably, α = 40-50°, meaning the inclined pipe 4 is inclined relative to the common pipe 2.

[0036] In this embodiment 1, the inclined pipe 4 is inclined relative to the common pipe 2. The contact area between the inclined pipe 4 and the bottom of the common valve chamber 6, and between the inclined pipe 4 and the bottom of the second inlet / outlet 13, is greater than the cross-sectional area of ​​the inclined pipe 4. When the medium flows from the common pipe 2 with a larger inner diameter to the inclined pipe 4 with a smaller inner diameter, the buffering at this point reduces the turbulence of the medium, thereby avoiding the introduction of air bubbles and improving the stability of the medium flow. At the same time, the inclined arrangement of the inclined pipe 4 can also reduce the interference between the inclined pipe 4 and the multiple straight pipes 3, and reduce the processing difficulty of the valve body 1.

[0037] When the multi-way valve has many passages, the number of branch pipes increases, and the number of intersections with the common pipe 2 also increases. Too many intersections will increase the size of the intersection nodes, forming dead corners, which will not only produce media residue but also increase the manufacturing difficulty. Therefore, in order to reduce the number and size of intersection nodes, the eight straight pipes 3 are designed into two groups: the first group of four straight pipes 3 and the second group of four straight pipes 3. The four straight pipes 3 in each group intersect with the same point on the common pipe 2. In this way, the two groups of straight pipes 3 form two different intersection points on the common pipe 2: the first intersection point 10 and the second intersection point 11.

[0038] In other embodiments, the straight-through pipe 3 can also be designed as 3 groups, 4 groups or more groups. In this case, more intersection points can be formed between the straight-through pipe 3 and the common pipe 2, which can further reduce the size at the intersection. However, in practical applications, too many intersection points will increase the thickness of the valve body 1 and increase the processing difficulty. Therefore, in this embodiment, it is the optimal choice to design the straight-through pipe 3 as two groups.

[0039] Specifically, in order to make the structure of the multi-way combination valve more symmetrical, the eight straight-through pipes 3 are grouped according to the pattern "ABABAB...", that is, two adjacent straight-through pipes 3 are in different groups and intersect with the common pipe 2 at different intersection points.

[0040] Compared to the large junction formed by eight straight pipes 3 on the common pipe 2, the grooves of the first junction 10 and the second junction 11 formed by the two junctions on the common pipe 2 are smaller, which can reduce the dead angle of medium flow and will not excessively increase the processing difficulty.

[0041] One end of each of the eight straight pipes 3 is perpendicularly connected to the common pipe 2, and the other end is located on the end face of the valve body 1, forming the first inlet / outlet 12. Eight branch valve chambers 8 are provided on the side of the valve body 1. Each branch valve chamber 8 is connected to one straight pipe 3. Each branch valve chamber 8 is equipped with one branch solenoid valve 9.

[0042] Furthermore, to further reduce the groove size at the intersection, the inner diameter of the common conduit 2 is designed to be larger than the inner diameters of the eight straight conduits 3 and the one inclined conduit 4. Specifically, the inner diameter of the common conduit 2 is 1.2-1.6 times the inner diameters of the straight conduits 3 and the inclined conduit 4. For example, in a specific application scenario, the diameter of the common conduit 2 is 2.2 mm, and the diameters of the straight conduits 3 and the inclined conduit 4 are both 1.5 mm.

[0043] Preferably, to accommodate the size of the common solenoid valve 7, in this embodiment 1, the common pipeline 2 includes two pipelines with different inner diameters, pipeline A21 and pipeline B22. Pipeline A21 is connected to the common port 5, and pipeline B22 is connected to the common valve chamber 6. The inner diameter of pipeline A21 is larger than that of pipeline B22, and the length of pipeline A21 is greater than that of pipeline B22. Eight straight pipelines 3 intersect and connect with pipeline A21. In this case, the inner diameter of pipeline A21 is 1.2-1.6 times the inner diameter of the straight pipelines 3 and the inclined pipelines 4.

[0044] In this embodiment 1, under a specific application scenario, the inclined pipe 4 serves as the gas path, the common solenoid valve 7 serves as the gas valve, and the multi-way combination valve is used for the flow of liquid media, such as water, organic solvents, acids, and alkalis. In this case, the multi-way combination valve is an 8-way valve, capable of simultaneously transmitting 8 different liquid media. Depending on the needs, the common port and the first inlet / outlet 12 of the 8 straight pipes 3 can serve as inlets or outlets for each other, enabling the entry and exit of the flowing media. The second inlet / outlet 13 of the inclined pipe 4 serves as the gas inlet.

[0045] It is worth noting that in other embodiments, the multi-way combination valve can also be equipped with other numbers of straight-through pipelines, such as 2, 3 or other numbers, which can be selected according to the actual scenario.

[0046] The working process of the multi-way combination valve in this embodiment 1 is as follows: Assuming that in this working mode, the first inlet / outlet 12 of the 8 straight-through pipes 3 is the inlet, and the common port 5 is the outlet.

[0047] Scenario 1: First, close the common solenoid valve 7 and open any branch solenoid valve 9. The medium enters the corresponding straight-through pipeline 3 from the inlet, then enters the common pipeline 2, and flows out of the multi-way combination valve through the outlet (i.e., the common port 5) and is sent into the container to be contained. Then, close the branch solenoid valve 9 and open the gas valve. The cleaning gas (clean air, nitrogen, or other protective gas can be selected) enters the inclined pipeline 4 from the gas inlet, and then enters the common pipeline 2 and part of the straight-through pipeline 3. The medium remaining in it is blown out to the outside of the multi-way combination valve through the outlet, forming an air seal to avoid cross-contamination between different media that subsequently enter the common pipeline 2. Then close the air valve and open another branch solenoid valve 9 to send another medium into the container to be filled through the multi-way combination valve. Then open the air valve again to blow out the medium remaining in the multi-way combination valve... Repeat this process many times until all media are transported.

[0048] In another specific application scenario, the inclined pipe 4 also serves as a liquid medium flow path, and the common solenoid valve 7 is not used as an air valve. In this case, one inclined pipe 4 and eight straight-through pipes 3 function the same, and the multi-way combination valve is a nine-way valve, capable of simultaneously transmitting up to nine different liquid media. The working process in this application scenario is as described above. In this case, any branch solenoid valve 9 can be set as an air valve, and the corresponding straight-through pipe 3 can be used as an air path. After the previous group of liquid media has been transmitted, the air valve is opened to blow out the remaining liquid media in the multi-way combination valve. However, due to the different distances between the air valve and different branch pipes, some liquid media may not be completely blown out. Therefore, the optimal solution is to use the common solenoid valve 7 as an air valve, as its distance from each branch pipe is the same, ensuring that all liquid media are blown out to the maximum extent and reducing residue.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-way combination valve, characterized in that: It includes a valve body, and a common pipeline and multiple branch pipelines disposed within the valve body; The common pipeline runs in a straight line through the center of the upper and lower end faces of the valve body. The end of the common pipeline located on one end face of the valve body is the common port, and the end of the common pipeline located on the other end face of the valve body is the common valve cavity. The multiple branch pipelines are respectively connected to the common pipeline within the valve body; the multiple branch pipelines include one inclined pipeline and multiple straight pipelines; One end of each straight pipe is perpendicularly connected to the common pipe, and the other end is the first inlet / outlet, which is located on the end face of the valve body where the common valve cavity is located; one end of each inclined pipe is connected to the bottom of the common valve cavity, and the other end is the second inlet / outlet, which is located on the end face of the valve body where the common port is located; the inclined pipe and the common pipe form an angle α, where 0° < α < 90°.

2. The multi-way combination valve as described in claim 1, characterized in that: The inner diameter of the common pipeline is larger than the inner diameter of the multiple straight pipelines and inclined pipelines.

3. The multi-way combination valve as described in claim 1, characterized in that: The multiple straight-through pipelines are divided into N groups, namely the first group of straight-through pipelines, the second group of straight-through pipelines, ... the Nth group of straight-through pipelines. The straight-through pipelines in each group converge at the same position on the common pipeline, so that the N groups of straight-through pipelines form N different intersection points on the common pipeline, namely the first intersection point, the second intersection point, ... the Nth intersection point, where N≥2.

4. The multi-way combination valve as described in claim 1, characterized in that: A common solenoid valve is installed in the common valve chamber.

5. The multi-way combination valve as described in claim 1, characterized in that: A branch valve chamber is provided on the side of the valve body. Each branch valve chamber is connected to a straight pipeline. A branch solenoid valve is installed in each branch valve chamber.

6. The multi-way combination valve as described in claim 3, characterized in that: In the N groups of straight-through pipes, the number of straight-through pipes in each group is the same or different from each other.

7. The multi-way combination valve as described in claim 1, characterized in that: The value of α is 40-50°.

8. The multi-way combination valve as described in claim 2, characterized in that: The inner diameter of the common pipeline is 1.2-1.6 times the inner diameter of the straight pipeline and the inclined pipeline.

9. The multi-way combination valve as described in claim 3, characterized in that: The value of N is 2.

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