Plug-in mounting type valve string with optimized structure

Abstract

A mounting channel penetrates through the middle of a main sleeve, the two ends of the mounting channel are a core end and a rod end respectively, a rod guide section, a spring section and a connecting section which are sequentially connected and have the inner diameter enlarged are formed at the rod end from inside to outside, and a core guide section and an abutting section which are connected and have the inner diameter enlarged are formed at the core end from inside to outside; according to the plug-in mounting type valve string with the optimized structure, the plug-in mounting type valve string is simplified into four components including the main sleeve, the valve element part, the ejector rod part and the rod sleeve, so that the mounting difficulty is simplified, and the possibility of structural abnormity is also reduced; the rod guide section provides a sleeving foundation for the ejector rod, the spring section provides a sleeving foundation for the second spring, and the connecting section provides a sleeving foundation for the rod sleeve; the core guide section provides a sleeving foundation for the small column core, and the abutting section provides a sleeving foundation for the large column core.

Description

Technical Field

[0001] The utility model relates to the field of control valves, and particularly to an optimized cartridge valve train with a novel structure. Background Art

[0002] In the fields of industrial and mechanical technologies, control valves, as an indispensable fluid control device, are of great importance. Such valves not only precisely regulate the flow direction, flow rate, and even pressure of gases and liquids, but also play a crucial role in multiple key fields such as industrial automation, chemical production, oil and gas extraction, and water treatment. Through precise manual or automatic operations, control valves ensure the accuracy, stability, and safety of fluid transmission, and are the fluid control centers in modern industrial systems.

[0003] The working principle of a control valve is based on its complex internal mechanical structure and design. Generally, it consists of key components such as a valve body, a valve flap (or called a valve core), a valve seat, and an actuator. When the actuator (such as a manual handle, an electric motor, a pneumatic device, or a hydraulic cylinder) receives a control signal, it drives the valve flap to move within the valve body, thereby changing the relative position between the valve flap and the valve seat, and achieving the opening, closing, or adjustment of the fluid passage. This process not only requires extremely high sealing performance but also ensures stable operation under various working conditions.

[0004] During the working process of the core component valve train of the control valve, each part faces impacts and pressures, which poses challenges to the structural stability of the valve train. The increased complexity of the entire valve train structure raises the probability of abnormalities. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide an optimized cartridge valve train with a novel structure, aiming to solve the problems of the complex structure of the valve train, inconvenience in installation, and the increased probability of abnormalities.

[0006] To achieve the above purpose, the utility model provides an optimized cartridge valve train with a novel structure, including:

[0007] A main sleeve with an installation channel running through the middle. The two ends of the installation channel are respectively a core end and a rod end. A first through hole is provided in the middle of the main sleeve in the length direction. The rod end is formed with a rod guiding section, a spring section, and a connecting section that are sequentially connected and have an increasing inner diameter from the inside out. The core end is formed with a core guiding section and a resisting section that are connected and have an increasing inner diameter from the inside out.

[0008] The spool part includes a spool cylinder. A first convex ring is provided on the outer periphery of the middle part of the spool cylinder in the length direction. A first spring restricted by the first convex ring is sleeved on the spool cylinder. A small core and a large core with an enlarged outer diameter are formed at the inner end of the spool cylinder in the length direction and extend towards the middle. The small core is fitted into the core guiding section. A flow channel is provided at the inner end of the small core. A second through hole leading to the flow channel is provided on the peripheral wall of the large core.

[0009] The ejector rod part includes an ejector rod. The ejector rod includes a small column rod and a large column rod connected to each other. The large column rod extends into the rod guiding section. A second convex ring is provided on the outer peripheral wall of the large column rod. A second spring is clamped between the second convex ring and the rod guiding section.

[0010] The rod sleeve is provided with a large hole groove and a small hole groove connected to each other at the central axis. The rod sleeve extends into the connection section and is sleeved. The small column rod passes through the small hole groove.

[0011] Further, a first sealing ring is fixed on the outer end face of the core guiding section in the length direction.

[0012] Further, a second sealing ring is provided on the inner wall of the core guiding section, and a chamfer structure is provided on the outer wall of the free end of the spool cylinder.

[0013] Further, a third sealing ring is provided on the inner wall of the rod guiding section, and a chamfer structure is provided on the outer wall of the free end of the small column rod.

[0014] Further, a chamfer structure is provided on the inner wall of the outer end of the connection section.

[0015] Further, a chamfer structure is provided on the inner wall of the outer end of the core guiding section.

[0016] Further, the number of the first through holes is 4 or 6, and they are evenly arranged around the main sleeve.

[0017] Further, the number of the second through holes is 4 or 6, and they are evenly arranged around the large core.

[0018] Further, the flow channel penetrates the spool cylinder.

[0019] Further, a threaded structure is provided on the outer wall of the rod sleeve in the length direction.

[0020] The plug-in valve string with optimized structure provided by the present utility model simplifies the plug-in valve string into four components: a main sleeve, a valve core part, a push rod part, and a rod sleeve, making the overall structure concise. The fixing method of socketing each component simplifies the installation difficulty and can also reduce the possibility of structural abnormalities. From the inside out, the rod end of the main sleeve is formed with a rod guiding section, a spring section, and a connecting section that are sequentially connected and have an increasing inner diameter. The rod guiding section provides a socketing basis for the push rod, the spring section provides a socketing basis for the second spring, and the connecting section provides a socketing basis for the rod sleeve. From the inside out, the core end of the rod end of the main sleeve is formed with a core guiding section and a resisting section that are connected and have an increasing inner diameter. The core guiding section provides a socketing basis for the small column core, and the resisting section provides a socketing basis for the large column core. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the plug-in valve string with optimized structure according to the first embodiment of the present utility model;

[0022] Figure 2 is a cross-sectional schematic diagram of the plug-in valve string with optimized structure according to the first embodiment of the present utility model;

[0023] Figure 3 is a cross-sectional schematic diagram of the main sleeve in the plug-in valve string with optimized structure according to the first embodiment of the present utility model;

[0024] Figure 4 is a cross-sectional schematic diagram of the valve core part in the plug-in valve string with optimized structure according to the first embodiment of the present utility model;

[0025] Figure 5 is a cross-sectional schematic diagram of the push rod part in the plug-in valve string with optimized structure according to the first embodiment of the present utility model;

[0026] Figure 6 is a cross-sectional schematic diagram of the rod sleeve in the plug-in valve string with optimized structure according to the first embodiment of the present utility model;

[0027] Figure 7 is a cross-sectional schematic diagram of the main sleeve in the plug-in valve string with optimized structure according to the second embodiment of the present utility model.

[0028] The realization of the purpose, functional characteristics, and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiment

[0029] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] Those skilled in the art can understand that, unless specifically stated otherwise, the singular forms "a", "an", "the", "above-mentioned", and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model means the presence of the described features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or their groups. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0031] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as herein.

[0032] Referring to Figures 1 to 7 , in an embodiment of the present utility model, an optimally structured plug-in valve string includes:

[0033] A main sleeve 100, with an installation channel 110 passing through the middle. The two ends of the installation channel 110 are respectively a core end 111 and a rod end 112. A first through hole 120 is provided in the middle of the main sleeve 100 in the length direction. The rod end 112 forms a rod guiding section 113, a spring section 114, and a connecting section 115 that are sequentially connected and have an increasing inner diameter from the inside to the outside. The core end 111 forms a core guiding section 116 and a abutting section 117 that are connected and have an increasing inner diameter from the inside to the outside.

[0034] A valve core part 200, including a valve core cylinder 210. A first convex ring 211 is provided on the outer circumference of the middle of the valve core cylinder 210 in the length direction. A first spring 220 restricted by the first convex ring 211 is sleeved on the valve core cylinder 210. A small core 212 and a large core 213 with an increasing outer diameter are formed from the inner end to the middle of the valve core cylinder 210. The small core 212 is fitted into the core guiding section 116. A flow channel 214 is provided at the inner end of the small core 212. A second through hole 215 leading to the flow channel 214 is provided on the peripheral wall of the large core 213.

[0035] The ejector rod part 300 includes an ejector rod 310. The ejector rod 310 includes a small column rod 311 and a large column rod 312 that are connected to each other. The large column rod 312 extends into the rod guiding section 113. A second convex ring 313 is provided on the outer peripheral wall of the large column rod 312. A second spring 320 is clamped between the second convex ring 313 and the rod guiding section 113.

[0036] The rod sleeve 400 is provided with a large hole groove 410 and a small hole groove 420 that are connected to each other at the central axis. The rod sleeve 400 extends into the connecting section 115 and is sleeved, and the small column rod 311 passes through the small hole groove 420.

[0037] In the prior art, during the working process of the valve string, which is the core component of the control valve, each part faces impacts and pressures, challenging the structural stability of the valve string. The increased complexity of the entire valve string structure raises the probability of abnormalities.

[0038] In the present utility model, usually, the main sleeve 100 is fixedly clamped in the base to form a fixation. A mounting channel 110 runs through the middle of the main sleeve 100. The two ends of the mounting channel 110 are respectively a core end 111 and a rod end 112, providing a basis for the subsequent installation of the valve core cylinder 210 and the ejector rod 310. A plurality of first through holes 120 can be circumferentially provided in the middle of the main sleeve 100 in the length direction. The first through holes 120 are the passing positions of the fluid. The rod end 112 forms a rod guiding section 113, a spring section 114, and a connecting section 115 that are sequentially connected and have an increasing inner diameter from the inside out, forming a two-step structure, providing a basis for sleeving. Specifically, the rod guiding section 113 provides a basis for the subsequent installation of the ejector rod 310, the spring section 114 provides a basis for the installation of the second spring 320, and the connecting section 115 provides a basis for the subsequent installation of the rod sleeve 400. The core end 111 forms a core guiding section 116 and a holding section 117 that are connected and have an increasing inner diameter from the inside out, forming a one-step structure, providing a basis for sleeving. Specifically, the core guiding section 116 provides a basis for the subsequent installation of the small column core 212, and the holding section 117 provides a basis for the subsequent installation of the large column core 213.

[0039] The valve core part 200 includes a valve core cylinder 210. A first convex ring 211 is provided on the outer circumference of the middle of the valve core cylinder 210 in the length direction. A first spring 220 restricted by the first convex ring 211 is sleeved on the valve core cylinder 210. The first spring 220 provides a basis for the return of the valve core cylinder 210. The inner end of the valve core cylinder 210 forms a small column core 212 and a large column core 213 with an increasing outer diameter towards the middle. The small column core 212 is fitted into the core guiding section 116, forming a guiding fit and also forming a seal. A flow channel 214 is provided at the inner end of the small column core 212. A second through hole 215 leading to the flow channel 214 is provided on the circumferential wall of the large column core 213. When the valve core cylinder 210 moves to the inner position, the large column core 213 abuts against the outer end of the core guiding section 116.

[0040] The ejector rod part 300 includes an ejector rod 310. The ejector rod 310 includes a small column rod 311 and a large column rod 312 which are connected to each other. The large column rod 312 extends into the rod guiding section 113. A second convex ring 313 is provided on the outer peripheral wall of the large column rod 312. A second spring 320 is clamped between the second convex ring 313 and the rod guiding section 113.

[0041] A large hole groove 410 and a small hole groove 420 which are connected to each other are provided at the central axis of the rod sleeve 400. The rod sleeve 400 extends into the connecting section 115 and is sleeved. The small column rod 311 passes through the small hole groove 420.

[0042] After the cartridge valve string completes its own assembly, it can be integrally installed into the base of the control valve. In the natural state, the first spring 220 provides a tendency to press the valve core cylinder 210 towards the main sleeve 100, and the second spring 320 provides a tendency to separate the ejector rod 310 from the main sleeve 100. When the fluid pressure introduced at the position of the first through hole 120 increases, the first spring 220 is compressed, and the valve core cylinder 210 slides outwards relative to the main sleeve 100 until the second through hole 215 is exposed from the main sleeve 100. At this time, the conduction of the fluid can be completed. When it is necessary to block the fluid in the cartridge valve string, the ejector rod 310 is driven to move towards the core guiding section 116 against the elastic force of the second spring 320 until it is closed.

[0043] In summary, the cartridge valve string is simplified into four components: the main sleeve 100, the valve core part 200, the ejector rod part 300, and the rod sleeve 400, making the overall structure simple. The fixed method of socketing each component simplifies the installation difficulty and can also reduce the possibility of structural abnormalities. The rod end 112 of the main sleeve 100 is formed with a rod guiding section 113, a spring section 114, and a connecting section 115 that are sequentially connected and have an increasing inner diameter from the inside out. The rod guiding section 113 provides a socketing basis for the ejector rod 310, the spring section 114 provides a socketing basis for the second spring 320, and the connecting section 115 provides a socketing basis for the rod sleeve 400. The core end 111 of the rod end 112 of the main sleeve 100 is formed with a core guiding section 116 and a resisting section 117 that are connected and have an increasing inner diameter from the inside out. The core guiding section 116 provides a socketing basis for the small column core 212, and the resisting section 117 provides a socketing basis for the large column core 213.

[0044] Refer to Figure 7 , in one embodiment, a first sealing ring 130 is fixed on the outer end face in the length direction of the core guiding section 116.

[0045] In this embodiment, the setting of the first sealing ring 130 improves the sealing effect in the axial direction, and particularly can also buffer the impact of the valve core cylinder 210.

[0046] Refer toFigures 1 to 6 , in one embodiment, a second sealing ring 118 is provided on the inner wall of the core guiding section 116, and a chamfer structure is provided on the outer wall of the free end of the valve core cylinder 210.

[0047] In this embodiment, for the sealing effect, a second sealing ring 118 is provided on the inner wall of the core guiding section 116, so as to improve the sealing effect between the main sleeve 100 and the valve core cylinder 210. Then, through the chamfer structure on the valve core cylinder 210, during the process of the valve core cylinder 210 penetrating into the main sleeve 100, no abnormal interference will be caused to the second sealing ring 118.

[0048] Refer to Figures 1 to 6 , in one embodiment, a third sealing ring 119 is provided on the inner wall of the rod guiding section 113, and a chamfer structure is provided on the outer wall of the free end of the small column rod 311.

[0049] In this embodiment, for the sealing effect, a third sealing ring 119 is provided on the inner wall of the rod guiding section 113, so as to improve the sealing effect between the ejector rod 310 and the main sleeve 100. Then, through the chamfer structure on the small column rod 311, during the process of the small column rod 311 penetrating into the main sleeve 100, no abnormal interference will be caused to the third sealing ring 119.

[0050] In one embodiment, a chamfer structure is provided on the inner wall of the outer end of the connecting section 115.

[0051] In this embodiment, by adding a chamfer structure at the corresponding position of the connecting section 115, the installation process of the rod sleeve 400 is optimized. The size and form (straight chamfer or round chamfer) of the specific chamfer structure can be optimized according to the usage state.

[0052] In one embodiment, a chamfer structure is provided on the inner wall of the outer end of the core guiding section 116.

[0053] In this embodiment, by adding a chamfer structure at a specific position on the core guiding section 116, the installation process of the valve core cylinder 210 becomes smoother. The size and form (straight chamfer or round chamfer) of the specific chamfer structure can be optimized according to the usage state.

[0054] In one embodiment, the number of the first through holes 120 is four or six, and they are evenly arranged around the main sleeve 100 in a circumferential manner.

[0055] In this embodiment, by restricting the number and setting position of the first through holes 120, the fluid runs more smoothly during operation. The diameter of the second through hole 215 can be adjusted according to the actual usage state.

[0056] In one embodiment, the number of the second through holes 215 is four or six, and they are evenly arranged around the large core 213.

[0057] In this embodiment, the number and the set position of the second through holes 215 are limited so that the fluid can flow more smoothly during operation. The diameter of the second through holes 215 can be adjusted according to the actual use state.

[0058] In one embodiment, the flow channel 214 penetrates through the valve core cylinder 210.

[0059] In this embodiment, the flow channel 214 penetrates through the entire valve core cylinder 210, so that corresponding parts can be added at the outer ends in the length direction of the valve core cylinder 210, providing a basis for diversified control.

[0060] In one embodiment, a threaded structure is provided on the outer wall in the length direction of the rod sleeve 400.

[0061] In this embodiment, through the above setting of the external thread structure of the rod sleeve 400, other related components can be conveniently connected. For example, the rod sleeve 400 can be conveniently disassembled from the base of the entire control valve.

[0062] In summary, the optimized cartridge valve string provided by the present utility model simplifies the cartridge valve string into four components: the main sleeve 100, the valve core part 200, the ejector rod part 300, and the rod sleeve 400, making the overall structure concise. The fixed method of socket connection of each component simplifies the installation difficulty and can also reduce the possibility of structural abnormalities; the rod end 112 of the main sleeve 100 is formed with a rod guiding section 113, a spring section 114, and a connecting section 115 that are sequentially connected and have an increasing inner diameter from the inside out. The rod guiding section 113 provides a socket basis for the ejector rod 310, the spring section 114 provides a socket basis for the second spring 320, and the connecting section 115 provides a socket basis for the rod sleeve 400; the core end 111 of the rod end 112 of the main sleeve 100 is formed with a core guiding section 116 and a resisting section 117 that are connected and have an increasing inner diameter from the inside out. The core guiding section 116 provides a socket basis for the small core 212, and the resisting section 117 provides a socket basis for the large core 213.

[0063] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A cartridge valve train with optimized structure, characterized in that: include: The main sleeve has an installation channel running through the middle, and the two ends of the installation channel are respectively a core end and a rod end. A first through hole is provided in the middle of the main sleeve in the length direction. The rod end is formed with a rod guide section, a spring section and a connecting section which are sequentially connected and have an enlarged inner diameter from the inside to the outside, and the core end is formed with a core guide section and a supporting section which are connected and have an enlarged inner diameter from the inside to the outside; The valve core part includes a valve core tube, a first convex ring is provided on the outer periphery of the middle part of the length direction of the valve core tube, a first spring for limiting the first convex ring is sleeved on the valve core tube, a small column core and a large column core with enlarged outer diameter are formed at the inner end of the length of the valve core tube toward the middle, the small column core fits into the core guide section, a flow channel is provided at the inner end of the small column core, and a second through hole leading to the flow channel is provided on the peripheral wall of the large column core; A push rod portion, comprising a push rod, wherein the push rod comprises a small column rod and a large column rod connected to each other, the large column rod extends into the rod guide section, a second convex ring is arranged on the outer peripheral wall of the large column rod, and a second spring is clamped between the second convex ring and the rod guide section; The rod sleeve has a large hole groove and a small hole groove connected to each other at the central axis. The rod sleeve extends into the connecting section and is sleeved, and the small column rod passes through the small hole groove.

2. The structure-optimized cartridge valve train according to claim 1, characterized in that: A first sealing ring is fixed on the outer end surface in the length direction of the core guide section.

3. The structure-optimized cartridge valve train according to claim 1, characterized in that: A second sealing ring is arranged on the inner wall of the core guide section, and a chamfered structure is arranged on the outer wall of the free end of the valve core tube.

4. The structure-optimized cartridge valve train according to claim 1, characterized in that: A third sealing ring is arranged on the inner wall of the rod guiding section, and a chamfered structure is arranged on the outer wall of the free end of the small column rod.

5. The structure-optimized cartridge valve train according to claim 1, characterized in that: The inner wall of the outer end of the connecting section is provided with a chamfered structure.

6. The structure-optimized cartridge valve train according to claim 5, characterized in that: The inner wall of the outer end of the core guide section is provided with a chamfered structure.

7. The structure-optimized cartridge valve train according to claim 1, characterized in that: The number of the first through holes is 4 or 6, and they are evenly arranged around the main sleeve.

8. The structure-optimized cartridge valve train according to claim 7, characterized in that: The number of the second through holes is 4 or 6, and they are evenly arranged around the large column core.

9. The structure-optimized cartridge valve train according to any one of claims 1 to 8, characterized in that: The flow channel passes through the valve core tube.

10. The structurally optimized cartridge valve train according to any one of claims 1 to 8, characterized in that: The outer wall of the rod sleeve in the length direction is provided with a thread structure.

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