Axial flow type pressure regulating valve

Abstract

According to the axial-flow type pressure regulating valve, the valve body liquid flow holes and the regulating mechanism liquid flow holes are formed in the pressure regulating guide structure and the regulating structure correspondingly, and the valve body liquid flow holes and the regulating mechanism liquid flow holes are formed in a staggered mode, so that the flow state of liquid can be regulated through the structure; when the liquid sequentially passes through the valve body liquid flow hole and the adjusting mechanism liquid flow hole in the flowing process, due to the staggered arrangement of the valve body liquid flow hole and the adjusting mechanism liquid flow hole, the flowing direction of the liquid can be frequently changed, and a complex flow field is formed. The complicated flow field is beneficial to reducing turbulence and vortex phenomena of the liquid, and can effectively disperse the energy of the liquid, so that the pressure of the liquid is reduced, and the purpose of regulating the pressure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to an axial flow pressure regulating valve. Background Art

[0002] In the prior art, during the liquid flow process of an axial flow pressure regulating valve, eddy current phenomena usually occur, resulting in an increase in the liquid flow resistance, thereby affecting the regulation accuracy and response speed of the pressure regulating valve. Summary of the Invention

[0003] In view of this, the utility model provides an axial flow pressure regulating valve.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] An axial flow pressure regulating valve includes a valve body. A valve cavity is formed in the valve body. An adjusting mechanism is arranged in the valve cavity. At least one pressure regulating guiding structure is arranged in the valve cavity. The pressure regulating guiding structure is fixedly connected with the inner wall of the valve cavity. The adjusting mechanism is movably arranged on the pressure regulating guiding structure. A plurality of valve body liquid flow holes are formed in the pressure regulating guiding structure. A plurality of adjusting mechanism liquid flow holes are arranged on the adjusting mechanism. The valve body liquid flow holes and the adjusting mechanism liquid flow holes are arranged in a staggered manner.

[0006] Preferably, the adjusting mechanism includes a piston assembly and a crank connecting rod assembly. The adjusting mechanism liquid flow holes are formed in the piston assembly. A valve rod is arranged on the valve body. One end of the valve rod extends into the valve cavity and is connected with the crank connecting rod assembly. A guiding hole is formed in the center of the pressure regulating guiding structure. One end of the piston assembly is connected with the crank connecting rod assembly. The valve rod is rotatably arranged on the valve body. By rotating the valve rod, the piston assembly is driven by the crank connecting rod assembly to perform an axial movement in the valve cavity along the guiding hole.

[0007] Preferably, the piston assembly includes a guide rod, a guide sleeve and a piston which are coaxially arranged. The guide sleeve is sleeved on the guide rod. The piston is arranged in a cylindrical structure. A plurality of connecting plates are arranged between the inner wall of the piston and the guide sleeve. The adjusting mechanism liquid flow holes are formed between the adjacent connecting plates.

[0008] Preferably, the pressure regulating guiding structure has a guiding portion and a plurality of flow guiding portions. The guiding portion is arranged in a cylindrical structure. The flow guiding portions are radially distributed on the guiding portion. Two ends of the flow guiding portion are respectively connected with the guiding portion and the inner wall of the valve cavity. The valve body liquid flow holes are formed between the adjacent guiding portions.

[0009] Preferably, two pressure regulating guiding structures are arranged. The pressure regulating guiding structures are respectively arranged on both sides of the adjusting mechanism. Both ends of the adjusting mechanism are connected with the pressure regulating guiding structures.

[0010] Preferably, the crank - connecting rod assembly includes a crank, a connecting rod, a snap ring and a fixed seat. The fixed seat is fixedly arranged in the valve cavity. A crank mounting groove is formed on the fixed seat. The crank has a transmission end extending into the crank mounting groove and a connecting end connecting the connecting rod. One end of the valve stem extending into the valve cavity sequentially passes through the groove wall of the crank mounting groove and the transmission end and is connected to the crank. The end of the connecting rod away from the connecting end is connected to the piston assembly.

[0011] The beneficial effects of the present utility model are as follows: By respectively arranging a valve body liquid flow hole and a regulating mechanism liquid flow hole on the pressure - regulating guiding structure and the regulating structure, and staggering the valve body liquid flow hole and the regulating mechanism liquid flow hole, such a structure can regulate the flow state of the liquid. When the liquid enters from the liquid outlet hole of the valve body and sequentially passes through the valve body liquid flow hole and the regulating mechanism liquid flow hole during the flowing process, due to the staggering of the two, the flowing direction of the liquid will change frequently, forming a complex flow field. This complex flow field not only helps to reduce the turbulence and eddy current phenomena of the liquid, but also can effectively disperse the energy of the liquid, thereby reducing the pressure of the liquid and achieving the purpose of pressure regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] FIG Figure 1 is a sectional view of an axial - flow pressure - regulating valve;

[0014] FIG Figure 2 is a connection schematic diagram of the plug assembly and the crank - connecting rod assembly;

[0015] FIG Figure 3 is FIG Figure 2 another - angle schematic diagram. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model.

[0017] The following will further describe the present utility model with reference to the accompanying drawings of the specification.

[0018] The present utility model provides the following technical solutions:

[0019] As shown in the attached Figures 1-3 figures, the utility model discloses an axial flow pressure regulating valve, which comprises a valve body 1. A valve chamber 2 is formed inside the valve body 1. An adjusting mechanism 3 is arranged inside the valve chamber 2. At least one pressure regulating guiding structure 4 is arranged inside the valve chamber 2. The pressure regulating guiding structure 4 is fixedly connected to the inner wall of the valve chamber 2. The adjusting mechanism 3 is movably arranged on the pressure regulating guiding structure 4. A plurality of valve body liquid flow holes 5 are formed on the pressure regulating guiding structure 4. A plurality of adjusting mechanism liquid flow holes 6 are arranged on the adjusting mechanism. The valve body liquid flow holes 5 and the adjusting mechanism liquid flow holes 6 are arranged in a staggered manner. Specifically, in this design, by respectively arranging the valve body liquid flow holes 5 and the adjusting mechanism liquid flow holes 6 on the pressure regulating guiding structure 4 and the adjusting structure, and the valve body liquid flow holes 5 and the adjusting mechanism liquid flow holes 6 are arranged in a staggered manner, such a structure can regulate the flow state of the liquid. When the liquid enters from the liquid outlet hole of the valve body 1 and successively passes through the valve body liquid flow holes 5 and the adjusting mechanism liquid flow holes 6 during the flowing process, due to the staggered arrangement of the two, the flowing direction of the liquid will frequently change, forming a complex flow field. This complex flow field not only helps to reduce the turbulence and vortex phenomena of the liquid, but also can effectively disperse the energy of the liquid, thereby reducing the pressure of the liquid and achieving the purpose of pressure regulation.

[0020] Furthermore, the adjusting mechanism 3 comprises a piston assembly 7 and a crank connecting rod assembly 8. The adjusting mechanism liquid flow holes 6 are formed on the piston assembly 7. A valve rod 9 is arranged on the valve body 1. One end of the valve rod 9 extends into the valve chamber 2 and is connected to the crank connecting rod assembly 8. A guiding hole 10 is formed at the center of the pressure regulating guiding structure 4. One end of the piston assembly 7 is connected to the crank connecting rod assembly 8. The valve rod 9 is rotatably arranged on the valve body 1. By rotating the valve rod 9, the piston assembly 7 is driven by the crank connecting rod assembly 8 to perform an axial movement inside the valve chamber 2 along the guiding hole 10. Specifically, in this embodiment, when the valve rod 9 rotates under the action of an external force, through the transmission of the crank connecting rod assembly 8, the rotational movement is converted into the axial movement of the piston assembly 7. During this process, the piston assembly 7 moves smoothly along the guiding hole 10 of the pressure regulating guiding structure 4, and at the same time, the relative position between the adjusting mechanism liquid flow holes 6 and the valve body liquid flow holes 5 changes, thereby realizing the fine adjustment of the liquid flow state. As the piston assembly 7 moves, the opening degree of the adjusting mechanism liquid flow holes 6 gradually changes, thereby affecting the flow rate and pressure of the liquid when passing through the valve, achieving a more accurate pressure regulating effect.

[0021] Furthermore, the piston assembly 7 includes a guide rod 11, a guide sleeve 12, and a piston 13 that are coaxially arranged. The guide sleeve 12 is sleeved on the guide rod 11. The piston 13 is arranged in a cylindrical structure. A plurality of connecting plates 14 are provided between the inner wall of the piston 13 and the guide sleeve 12. The regulating mechanism fluid flow holes 6 are formed between adjacent connecting plates 14. Specifically, in this embodiment, the sliding guidance between the guide rod 11 and the guide sleeve 12 is achieved through precise fitting, ensuring that the piston assembly 7 can maintain stability and smoothness during axial movement. The cylindrical structure of the piston 13 not only enhances its structural strength but also optimizes the shape of the fluid channel, reducing the resistance during liquid flow. The design of the connecting plates 14 divides the space between the inner wall of the piston 13 and the guide sleeve 12, forming multiple fluid channels, namely the regulating mechanism fluid flow holes 6. The size and distribution of these fluid flow holes are carefully calculated to ensure that during the movement of the piston assembly 7, the flow rate and pressure of the fluid can be precisely controlled. In addition, the connecting plates 14 also play a role in supporting and fixing the relative positions between the piston 13 and the guide sleeve 12, preventing misalignment or loosening under high-pressure or high-flow-rate conditions. At the same time, the gaps between the connecting plates 14 and the inner wall of the piston 13 and the guide sleeve 12 are also strictly controlled to avoid fluid leakage or the generation of unnecessary eddy currents, further improving the sealing performance and stability of the valve.

[0022] Furthermore, the pressure regulating and guiding structure 4 has a guiding portion 15 and a plurality of guiding portions 16. The guiding portion 15 is arranged in a cylindrical structure. The guiding portions 16 are radially distributed on the guiding portion 15. The two ends of the guiding portions 16 are respectively connected to the guiding portion 15 and the inner wall of the valve cavity 2. The valve body fluid flow holes 5 are opened between adjacent guiding portions 15. Specifically, in this embodiment, the design of the pressure regulating and guiding structure 4 combines the functions of guiding and fluid guiding. The guiding portion 15, as the core, its cylindrical structure not only provides a stable movement trajectory for the components inside the valve but also ensures a high degree of precision during the valve regulation process. The radially distributed guiding portions 16 efficiently guide the fluid from the guiding portion 15 to all corners of the valve cavity 2, ensuring that the fluid flow path inside the valve body 1 is optimized, reducing the flow resistance, and improving the response speed and precision of the flow rate regulation.

[0023] Furthermore, two pressure regulating and guiding structures 4 are provided, and the pressure regulating and guiding structures 4 are respectively arranged on both sides of the adjusting mechanism 3. Both ends of the adjusting mechanism 3 are connected to the pressure regulating and guiding structures 4. Specifically, in this embodiment, the dual layout of the pressure regulating and guiding structures 4 enhances the overall performance and adjustment ability of the valve. This design enables the adjusting mechanism 3 to obtain more balanced support and guidance during operation, further improving the stability and reliability of the adjustment. The pressure regulating and guiding structures 4 on both sides are like two solid bridges, building a stable regulation platform for the adjusting mechanism 3. They not only share the stress during the adjustment process but also ensure that the adjusting mechanism 3 can move smoothly and precisely along the preset path through their precise guiding effect.

[0024] Furthermore, the crank - connecting rod assembly 8 includes a crank 17, a connecting rod 18, a retaining ring 19, and a fixed seat 20. The fixed seat 20 is fixedly arranged in the valve cavity 2. A crank mounting groove 21 is formed on the fixed seat 20. The crank has a transmission end 22 extending into the crank mounting groove 21 and a connecting end 23 connected to the connecting rod 18. One end of the valve stem 9 extending into the valve cavity 2 sequentially passes through the groove wall of the crank mounting groove 21 and the transmission end 22 to be connected to the crank 17. The end of the connecting rod 18 away from the connecting end 23 is connected to the piston assembly 7. Specifically, in this embodiment, the refined design of the crank - connecting rod assembly 8 further improves the smoothness and efficiency of the valve operation. The crank 17, as the core component for power transmission, its sturdy and durable material ensures the stability of long - term operation. The connecting rod 18 connects the crank 17 and the piston assembly 7, converting the rotational motion into linear motion and achieving efficient energy conversion. The setting of the retaining ring 19 not only enhances the connection strength between the connecting rod 18 and the crank 17 but also prevents loosening caused by vibration or impact, ensuring the tight fit of the entire assembly. The fixed seat 20, as the base of the crank - connecting rod assembly 8, its precise positioning and firm installation provide a solid support for the entire assembly. The ingenious design of the crank mounting groove 21 enables the crank 17 to be accurately installed in place and achieve precise docking with the valve stem 9. The valve stem 9, as a key component connecting the external operating mechanism and the internal adjusting mechanism 3, its end extending into the valve cavity 2 cleverly passes through the groove wall of the crank mounting groove and the transmission end 22 to be tightly connected to the crank 17, realizing the synchronization of external operation and internal adjustment. In addition, the precise connection between the end of the connecting rod 18 away from the connecting end 23 and the piston assembly 7 directly transmits the power to the actuator of the valve, achieving precise control of the fluid flow rate.

[0025] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An axial flow pressure regulating valve, comprising a valve body, a valve chamber is formed in the valve body, and an adjusting mechanism is arranged in the valve chamber, characterized in that: At least one pressure regulating and guiding structure is arranged in the valve cavity. The pressure regulating and guiding structure is fixedly connected to the inner wall of the valve cavity. The regulating mechanism is movably arranged on the pressure regulating and guiding structure. A plurality of valve body liquid flow holes are formed in the pressure regulating and guiding structure, and a plurality of regulating mechanism liquid flow holes are arranged on the regulating mechanism. The valve body liquid flow holes and the regulating mechanism liquid flow holes are arranged in a staggered manner.

2. The axial flow pressure regulating valve according to claim 1, characterized in that: The regulating mechanism includes a piston assembly and a crank connecting rod assembly. The regulating mechanism liquid flow holes are formed in the piston assembly. A valve rod is arranged on the valve body. One end of the valve rod extends into the valve cavity and is connected to the crank connecting rod assembly. A guiding hole is formed in the center of the pressure regulating and guiding structure. One end of the piston assembly is connected to the crank connecting rod assembly. The valve rod is rotatably arranged on the valve body. By rotating the valve rod, the piston assembly is driven by the crank connecting rod assembly to perform an axial movement in the valve cavity along the guiding hole.

3. The axial flow pressure regulating valve according to claim 2, wherein: The piston assembly includes a guide rod, a guide sleeve and a piston which are arranged coaxially. The guide sleeve is sleeved on the guide rod. The piston is arranged in a cylindrical structure. A plurality of connecting plates are arranged between the inner wall of the piston and the guide sleeve. The regulating mechanism liquid flow holes are formed between adjacent connecting plates.

4. The axial flow pressure regulating valve according to claim 1, characterized in that: The pressure regulating and guiding structure has a guiding part and a plurality of flow guiding parts. The guiding part is arranged in a cylindrical structure. The flow guiding parts are radially distributed on the guiding part. Two ends of the flow guiding part are respectively connected to the guiding part and the inner wall of the valve cavity. The valve body liquid flow holes are formed between adjacent guiding parts.

5. The axial flow pressure regulating valve according to claim 1, characterized in that: Two pressure regulating and guiding structures are arranged. The pressure regulating and guiding structures are respectively arranged on both sides of the regulating mechanism. Both ends of the regulating mechanism are connected to the pressure regulating and guiding structures.

6. The axial flow pressure regulating valve according to claim 2, wherein: The crank connecting rod assembly includes a crank, a connecting rod, a snap ring and a fixed seat. The fixed seat is fixedly arranged in the valve cavity. A crank installation groove is formed in the fixed seat. The crank has a transmission end extending into the crank installation groove and a connecting end connected to the connecting rod. One end of the valve rod extending into the valve cavity sequentially passes through the groove wall of the crank installation groove and the transmission end and is connected to the crank. The end of the connecting rod far from the connecting end is connected to the piston assembly.

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