Valve element, valve and circulation structure

Abstract

The utility model provides a valve element, a valve and a circulation structure, and relates to the technical field of valves, the key points of the technical scheme are that the valve element comprises a first element body and a third element body which are sequentially connected end to end, and the radial size of the first element body and the radial size of the third element body are sequentially increased; the first core body is used for being matched with a through hole of a boss structure in the valve body structure to achieve a switching function, and the third core body is used for being in contact with an elastic piece in the valve body structure and is provided with a first vent hole; the first vent hole is formed in the central area of the third core body; and a second vent hole is formed in the side surface of the third core body and is communicated with the first vent hole. The valve element, the valve and the circulation structure have the advantages of being high in structural strength, convenient to miniaturize, low in machining precision requirement and low in production cost.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a valve core, a valve, and a flow structure. Background Art

[0002] A one-way valve is a component used to achieve one-way flow of gas or liquid. A conventional one-way valve generally includes a valve body, a valve core and a return spring. The valve core is slidably arranged in the valve body, and the return spring is arranged to contact the valve core so that the return spring provides elastic force to the valve core. Under normal conditions, the valve core will block the internal channel of the valve body, preventing gas or liquid from passing through. When it is necessary to achieve the circulation of gas or liquid, the valve core is pushed open to create a gap between the valve core and the internal channel of the valve body, thereby allowing gas or liquid to flow. When the valve core is pushed open, an extrusion force is applied to the return spring. When the extrusion on the valve core is released, the valve core again blocks the internal channel of the valve body under the action of the return spring.

[0003] However, for some production processes that require continuous air intake, interrupting the air intake will lead to a decrease in work efficiency. In this regard, the Chinese utility model patent with announcement number CN204573209U proposes a one-way valve with improved structure. Specifically, a receiving cavity with two ends opening is formed inside the valve body, a boss is provided inside the valve body, the boss is provided with a through hole, a first air hole is opened on the side wall of the valve body, and the valve core is composed of an upper guide part, a shoulder, a middle guide part and a lower guide part. The valve core can movably pass through the through hole and the outer wall of the middle guide part is connected to the valve body. The inner wall of the valve body fits tightly, and a second air hole is provided on the middle guide part that runs through the front and back. When air is taken in at the front end, the valve core moves backward, and a gap is formed between the upper guide part and the boss. The middle guide part covers the first air hole, and the gas enters the accommodating chamber through the second air hole. When the front end stops taking in air, the valve core returns to its original position under the action of the reset spring. At this time, the boss covers the through hole, and the first air hole is connected with the accommodating chamber. The gas enters the accommodating chamber through the first air hole, realizing the function of side air intake, thereby solving the problem of continuous air intake in traditional technology.

[0004] However, in its specific structure, the middle guide part and the upper guide part in its valve core structure are stepped shaft structures, and its second air hole is arranged in the area where the middle guide part protrudes radially from the upper guide part. The advantage is that the processing process is simple, and it only needs to drill a through hole in the middle guide part. However, since the second air hole is arranged in the area where the middle guide part protrudes radially from the upper guide part, its position is close to the outer wall of the middle guide part, which makes the distance between the second air hole and the outer wall very small, thereby bringing about the problem of structural stability. The small distance between the second air hole and the outer wall will lead to a decrease in its structural strength. In order to ensure sufficient strength, the radial size of the middle guide part is made The need for a larger one-way valve increases the area where the middle guide portion protrudes radially from the upper guide portion. This solution makes it difficult to miniaturize the entire one-way valve. The adoption of this solution will make the overall radial dimension of the one-way valve not less than 10 mm, otherwise its structural strength will not be able to meet the demand. Moreover, although the setting of the second air hole in the above-mentioned prior art simplifies the processing procedure, this does not mean that the processing difficulty is simple. Since the distance between the second air hole and the outer wall is small, it is more likely to cause excessive deviations in the processing due to cutting force, vibration and other factors during the processing, and even processing damage may occur, which may easily lead to scrap and increase production costs.

[0005] Improvements are urgently needed to address the above issues. Utility Model Content

[0006] The purpose of this application is to provide a valve core, a valve and a flow structure, which have the advantages of high structural strength, easy miniaturization, low processing precision requirements and low production cost.

[0007] In the first aspect, the present application provides a valve core, and the technical solution is as follows:

[0008] Used to cooperate with the valve body structure to form a valve, the valve core includes a first core body and a third core body that are connected end to end and have radial dimensions that increase sequentially, the first core body is used to pass through the boss structure inside the valve body structure, the first core body is used to cooperate with the through hole of the boss structure inside the valve body structure to realize the switching function, and the third core body is used to contact the elastic member inside the valve body structure and is provided with a first vent hole;

[0009] The first ventilation hole is opened in the central area of ​​the third core;

[0010] A second ventilation hole is formed on the side surface of the third core body and is communicated with the first ventilation hole.

[0011] Furthermore, in the present application, a second core body is provided at one end of the first core body close to the third core body for cooperating with the through hole of the boss structure inside the valve body structure to realize the switching function. The radial dimension of the second core body is larger than the first core body and smaller than the third core body, and the second air vent is opened at one end of the third core body close to the second core body.

[0012] Furthermore, in the present application, the second ventilation hole (8) passes through the side surface of the third core.

[0013] Furthermore, in the present application, a first incision is provided on the side surface of the third core in an area connected to the second air vent, so that the radial dimension of the area where the first incision is located is smaller than the radial dimension of the remaining areas of the side surface of the third core, and the first incision extends to the end portion where the third core is connected to the second core.

[0014] Furthermore, in the present application, a first installation groove is provided on the side surface of the second core body, a sealing ring is provided in the first installation groove, and the radial size of the sealing ring is smaller than the radial size of the third core body.

[0015] Furthermore, in the present application, the third core is a columnar structure, the first ventilation hole is a circular hole, and the ratio of the diameter of the first ventilation hole to the diameter of the third core is (2.5~3.5):(4.5~5.5).

[0016] In a second aspect, the present application further proposes a valve, which includes the above-mentioned valve core.

[0017] Furthermore, in the present application, the valve at least includes the valve body, the interior of the valve body is provided with a first cavity and a second cavity corresponding to and connected at both ends respectively, the boss structure is provided between the first cavity and the second cavity, the boss structure is provided with the through hole for connecting the first cavity and the second cavity, the valve core is slidingly arranged in the second cavity, the valve body is also provided with a blocking member, the blocking member is provided with an air hole connected to the outside for allowing gas to flow out, the blocking member is arranged at one end away from the boss structure and the first cavity, the elastic member is provided between the blocking member and the valve core, a third air vent is provided on the side of the valve body to communicate with the second cavity, and the distance from the third air vent to the boss structure is greater than the size of the third core in the axial direction.

[0018] Furthermore, in the present application, the valve body is provided with a guide structure at the end portion close to the first cavity.

[0019] In a third aspect, the present application further proposes a flow structure, characterized in that the flow structure includes the above-mentioned valve;

[0020] Also includes:

[0021] A push rod, the push rod at least including a first rod body for being inserted into the first cavity to push the valve core, a fourth air vent being provided in the first rod body, a fifth air vent being provided on the side of the first rod body and communicating with the fourth air vent, a second cut being provided on the side of the first rod body in an area communicating with the fourth air vent, so that the radial dimension of the area where the second cut is located is smaller than the radial dimension of the remaining area of ​​the side of the first rod body, and the second cut extends to the end of the first rod body close to one end of the valve.

[0022] As can be seen from the above, the present application provides a valve core, valve, and circulation structure, wherein the valve core includes a first core body, a second core body, and a third core body, which are connected end to end and have increasing radial dimensions. A first vent is provided in the center of the third core body, and a second vent is provided on the side of the third core body to communicate with the first vent. This design places the vent in the center of the valve core, which increases structural strength, facilitates processing, improves processing accuracy, and reduces production costs. It has the advantages of high structural strength, easy miniaturization, low processing accuracy requirements, and low production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a valve formed by the cooperation of a valve core and a valve body provided in this application.

[0024] Figure 2 This is a schematic structural diagram of a valve core provided in this application.

[0025] Figure 3 This is a schematic diagram of the structure of a valve provided in this application.

[0026] Figure 4 A schematic diagram of a circulation structure provided for this application.

[0027] Figure 5 This is a schematic structural diagram of the push rod provided in this application.

[0028] In the figure: 1. first core body; 2. second core body; 3. third core body; 4. boss structure; 5. through hole; 6. elastic member; 7. first air vent; 8. second air vent; 9. first incision; 10. first mounting groove; 11. first cavity; 12. second cavity; 13. third air vent; 14. guide structure; 15. blocking member; 16. push rod; 17. first rod body; 18. fourth air vent; 19. fifth air vent; 20. second incision. DETAILED DESCRIPTION

[0029] The technical solutions in the present application will be clearly and completely described in combination with the accompanying drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In the development history of valves, miniaturization has always been an important technical trend. However, traditional valves face challenges in structural strength and processing difficulty during miniaturization. Especially in some production processes that require continuous gas intake, the existing valve structure is difficult to meet the dual demands of miniaturization and high reliability.

[0032] The present application proposes an innovative valve core design to solve the difficulties encountered by existing valves during miniaturization.

[0033] Specifically, referring to Figures 1 to 5 , the valve core proposed in the present application includes a first core body 1 and a third core body 3 connected in sequence from head to tail and with increasing radial dimensions in sequence. This structural design enables the valve core to cooperate well with the valve body structure, forming an efficient valve.

[0034] In the design process, the present application focuses on how to improve the structural strength of the valve core while ensuring the smoothness of gas flow. In existing designs, the air hole is usually arranged near the outer side wall, which leads to the problems of reduced structural strength and increased processing difficulty. To solve this problem, the present application adopts a new layout.

[0035] Specifically, the present application opens a first air hole 7 in the central region of the third core body 3. This design significantly increases the distance between the first air hole 7 and the outer side wall, thereby improving the strength of the overall structure. At the same time, in order to ensure the smoothness of gas flow, the present application opens a second air hole 8 on the side surface of the third core body 3 and makes it communicate with the first air hole 7. This design not only solves the problem of structural strength, but also ensures the efficiency of gas flow.

[0036] In practice, the first core 1 passes through the boss structure 4 within the valve body and cooperates with the through hole 5 of the boss structure 4 to achieve the opening and closing function. The third core 3 not only contacts the elastic member 6 within the valve body but also performs the primary ventilation function. This design enables the valve core to achieve a more compact size while maintaining structural strength.

[0037] Compared to existing technologies, the design of this application offers significant advantages. First, positioning the first vent 7 in the central region of the third core 3 significantly increases the distance between the vent and the outer wall, improving structural strength. This allows the overall size of the valve core to be further reduced while maintaining strength, achieving valve miniaturization. Second, this design reduces manufacturing difficulty and the risk of deviation or damage during processing, thereby helping to lower production costs.

[0038] In addition, the design of this application also improves the reliability and service life of the valve core. By optimizing the layout of the vent holes, the risk of failure caused by structural weakness is reduced, allowing the valve core to maintain stable performance during long-term use.

[0039] In summary, the valve core design proposed in this application, through its innovative vent hole layout, effectively addresses the structural strength and processing difficulties associated with valve miniaturization. This design not only enables valve miniaturization but also improves product reliability and production efficiency, providing new ideas and possibilities for the further development of valve technology.

[0040] Furthermore, the present application also proposes that a second core body 2 is provided at one end of the first core body 1 close to the third core body 3 for cooperating with the through hole 5 of the boss structure 4 inside the valve body structure to realize the switching function. The radial dimension of the second core body 2 is larger than the first core body 1 and smaller than the third core body 3, and the second air vent 8 is opened at one end of the third core body 3 close to the second core body 2.

[0041] This technical solution is to open a second vent hole 8 at one end of the third core 3 close to the second core 2 to communicate with the first vent hole 7 .

[0042] The second vent hole 8 is arranged near one end of the second core 2, which can shorten the flow distance of the gas from the inlet to the second vent hole 8, reduce the flow resistance of the gas in the valve core, and the gas generally enters from the inlet position of the valve, passes through the through hole 5 of the boss structure 4 in the valve body, then flows into the second vent hole 8, and finally flows out from the first vent hole 7. By optimizing the position of the second vent hole 8, the gas flow efficiency in the valve core can be improved, and the energy loss during gas flow can be reduced. By opening the second vent hole 8 near one end of the third core 3 close to the second core 2, the technical scheme effectively solves the problem of how to arrange the vent hole on the third core 3 of the valve core to achieve better gas flow effect. This design not only optimizes the gas flow path, but also improves the gas flow efficiency, while enhancing the overall functionality of the valve core. Compared with randomly arranging the position of the second vent hole 8, this scheme more targetedly improves the gas flow performance of the valve core.

[0043] In an implementation, the second vent hole 8 can adopt various shapes and sizes, such as a circular shape, an elliptical shape, or other suitable geometric shapes, to adapt to different gas flow requirements. The opening position of the second vent hole 8 can be fine-tuned according to specific application scenarios to further optimize the gas flow path. In addition, the number of second vent holes 8 can also be adjusted as needed, as long as the effect of optimizing gas flow can be achieved.

[0044] Through this design, the application not only solves the problems of structural strength and processing difficulty faced by the valve core in the miniaturization process, but also significantly improves the gas flow efficiency. Compared with the prior art, the design of the application realizes a more efficient gas flow path while ensuring the structural strength of the valve core, reduces energy loss, and improves the overall functionality and reliability of the valve core.

[0045] In addition, the second core 2 is arranged on the first core 1 to cooperate with the through hole 5, which can reduce the radial size of the first core 1, optimize the stress part, and improve the stability. Specifically, if the original first core 1 is used to cooperate with the through hole 5 to realize the switching function, the radial size of the first core 1 and the through hole 5 need to be adapted, which will make the overall radial size of the first core 1 larger and the center of gravity distributed in the front position. By arranging the second core 2 with a radial size larger than the first core 1 and smaller than the third core 3 on the first core 1 to cooperate with the through hole 5 to realize the switching function, the overall radial size of the first core 1 can be reduced, and the center of gravity distribution is optimized, which is beneficial to the overall stability.

[0046] Further, the second vent hole 8 penetrates the side surface of the third core 3.

[0047] Second vent holes 8 extend through the side of the third core 3, ensuring that there are second vent holes 8 on opposite sides of the third core 3. This means there are at least two symmetrical second vent holes 8. This structure allows gas to enter directly from the side of the third core 3, without requiring a detour or complex path. This design also helps improve the stability of the valve core. When gas flows, the through-hole vent holes evenly distribute the air pressure, reducing localized pressure concentration and preventing unstable vibration or deviation of the valve core during operation. This structure also prevents the vent holes from being clogged by impurities, as the through-hole design facilitates cleaning and maintenance.

[0048] In practice, the second vent holes 8 can be implemented in a variety of ways. For example, the second vent holes 8 can be mechanically drilled directly through the side of the third core 3 to ensure precise aperture and position. To further enhance ventilation, the number and distribution of the second vent holes 8 can be adjusted based on actual needs, such as by adding more second vent holes 8 or changing their arrangement. Furthermore, the shape of the second vent holes 8 can be optimized based on airflow characteristics, such as using a circular, elliptical, or other geometric shape to achieve optimal ventilation.

[0049] This application effectively addresses the poor ventilation issues of the prior art by providing a second vent hole 8 extending through the side of the third core 3. Compared to the prior art, this design not only simplifies the gas flow path and improves ventilation efficiency, but also enhances the structural stability of the valve core, reducing the risk of vibration and misalignment caused by localized pressure concentration. Furthermore, the through-hole design facilitates cleaning and maintenance, reducing the likelihood of the vent hole becoming clogged by impurities, thereby improving the reliability and service life of the valve core.

[0050] Further, refer to Figure 2 The present application also proposes that a first incision 9 is opened on the side of the third core 3 in the area connected to the second vent hole 8, so that the radial dimension of the area where the first incision 9 is located is smaller than the radial dimension of the remaining areas of the side of the third core 3, and the first incision 9 extends to the end portion where the third core 3 is connected to the second core 2.

[0051] The design of the first incision 9 on the side of the third core 3 makes the radial dimension of the area where the first incision 9 is located smaller than the radial dimension of the other side areas of the third core 3. This structural design ensures space for gas circulation and is conducive to improving the efficiency of gas circulation. Generally speaking, the third core 3 needs to maintain sealing with the internal channel of the valve body, generally a sliding seal, and the second vent 8 is set on the side of the third core 3, which will cause the second vent 8 to be blocked by the internal channel of the valve body. In order to achieve gas circulation, this application proposes to open a first incision 9 on the side of the third core 3 in the area connected to the second vent 8. The setting of the first incision 9 reserves enough space for gas circulation so that the second vent 8 will not be blocked. The first incision 9 extends to the end where the third core 3 is connected to the second core 2. This is to allow the space formed by the first incision 9 to extend to the entrance position of the gas entering the second vent 8, thereby ensuring the smooth circulation of gas.

[0052] In practice, the first cutout 9 can take a variety of shapes, such as a rectangle, trapezoid, or other suitable geometric shape, to maximize the space for gas circulation without compromising the overall structural strength of the third core 3. Furthermore, the depth and width of the first cutout 9 can be adjusted as needed to optimize gas circulation. To further improve gas circulation efficiency, the surface of the first cutout 9 can be smoothed to reduce resistance to gas flow.

[0053] By providing a first cutout 9 on the side of the third core 3, the present invention effectively reduces the radial dimension of the remaining area of ​​the side of the third core 3, thereby improving communication with the second vent hole 8 and improving the ventilation performance and overall operating efficiency of the valve core. Compared with the prior art, the design of the present invention not only solves the problem of obstructed gas flow, but also achieves miniaturization and high efficiency of the valve core while ensuring structural strength.

[0054] Furthermore, the present application also proposes a technical solution of providing a first mounting groove 10 on the side surface of the second core 2 and arranging a sealing ring therein.

[0055] This design allows the sealing ring to effectively fill the gap between the valve core and the valve body, preventing gas leakage and ensuring the sealing and stability of the valve core within the valve body. The radial dimension of the sealing ring is smaller than that of the third core 3, which prevents the sealing ring from forming a sliding seal with the internal passage of the valve body, thereby ensuring smooth gas flow.

[0056] In terms of implementation, the sealing ring can be made of a variety of materials, such as rubber or silicone, to adapt to different working environments and sealing requirements. The shape and size of the first mounting groove 10 can be adjusted according to the specific application to ensure the stability and sealing effect of the sealing ring.

[0057] Furthermore, the present application also proposes that the third core 3 is a columnar structure, the first ventilation hole 7 is a circular hole, and the ratio of the diameter of the first ventilation hole 7 to the diameter of the third core 3 is (2.5~3.5):(4.5~5.5).

[0058] This technical solution improves the performance of the valve by optimizing the structure of the third core 3 and the size ratio of the first vent hole 7. Specifically, the third core 3 adopts a columnar structure, which is simple and easy to process, while providing stable support and sealing effects. The first vent hole 7 adopts a circular hole design, and the circular hole can reduce air flow resistance and improve ventilation efficiency. The ratio of the diameter of the first vent hole 7 to the diameter of the third core 3 is set in the range of (2.5~3.5): (4.5~5.5). By precisely controlling the ratio of these two sizes, it is possible to ensure that the third core 3 has sufficient strength and stability while ensuring sufficient ventilation area. This design balances the requirements of ventilation efficiency and structural strength.

[0059] Through the above design, the present application can effectively solve the problem of the design of the vent hole of the third core body 3 in the valve core structure. The optimized structure can improve the ventilation efficiency of the valve while ensuring the structural strength and stability of the valve core.

[0060] Further, refer to Figures 1 to 5 , the present application also proposes a valve, comprising the above-mentioned valve core.

[0061] By adopting the above-mentioned valve core, the structural strength and processing difficulty issues in the process of valve miniaturization are effectively solved. This design not only achieves valve miniaturization, but also improves product reliability and production efficiency.

[0062] Further, refer to Figure 3 The present application also proposes that the valve at least includes a valve body, the interior of the valve body is provided with a first cavity 11 and a second cavity 12 which correspond to and are connected at both ends respectively, a boss structure 4 is provided between the first cavity 11 and the second cavity 12, the boss structure 4 is provided with a through hole 5 for connecting the first cavity 11 and the second cavity 12, the valve core is slidingly arranged in the second cavity 12, the valve body is also provided with a blocking member 15, the blocking member 15 is provided with an air hole connected to the outside for allowing gas to flow out, the blocking member 15 is arranged at one end away from the boss structure 4 and the first cavity 11, an elastic member 6 is provided between the blocking member 15 and the valve core, a third vent hole 13 is provided on the side of the valve body to communicate with the second cavity 12, and the distance from the third vent hole 13 to the boss structure 4 is greater than the size of the third core 3 in the axial direction.

[0063] The radial dimension of the valve body may be less than or equal to 10 mm, or may be greater than 10 mm. However, in the prior art, the dimension of the valve body is usually difficult to be less than 10 mm.

[0064] The first cavity 11 and the second cavity 12 inside the valve body are connected through the through hole 5 on the boss structure 4, providing sliding space for the valve core. The valve core slides in the second cavity 12 to achieve the switching function. The setting of the blocking member 15 and the elastic member 6 ensures the stability and return function of the valve core. The position of the third vent hole 13 is cleverly designed. Its distance from the boss structure 4 is greater than the axial dimension of the third core body 3. This ensures that when the valve core is in the closed state, the third vent hole 13 will not be completely blocked by the valve core, ensuring the flow of gas. Through the above-mentioned design, the radial dimension of the valve body can be limited to within 10mm. This compact design allows the valve to be used in occasions with limited space, and is also conducive to improving the response speed and sensitivity of the valve. Through these structural designs, the valve achieves a stable and reliable one-way circulation function in a limited space. The sliding design of the valve core and the coordination of the elastic member 6 ensure the switching performance of the valve, while the clever arrangement of the second vent hole 8 ensures the smooth flow of gas. The compact size design expands the scope of application.

[0065] In a specific implementation, the first cavity 11 and the second cavity 12 of the valve body can be realized by the same processing method, such as by precision casting or machining. The through hole 5 of the boss structure 4 can be selected with different diameters and shapes as needed to adapt to different flow requirements. The material of the valve core can be selected from materials with good wear resistance and corrosion resistance, such as stainless steel or high-strength plastic, to improve the service life and reliability of the valve core. The elastic member 6 can be a spring or a rubber member, and the appropriate elastic coefficient and shape can be selected according to the specific application scenario. The position and size of the third vent 13 can be adjusted according to actual needs to ensure the best ventilation effect.

[0066] Through innovative structural design, this application achieves effective valve control and ventilation functions within a compact valve body. The valve core slides smoothly within the valve body and cooperates with the elastic member 6 to achieve on-off functionality. Compared with existing technologies, this design not only addresses the challenges of structural strength and processing difficulty during miniaturization, but also improves the valve's response speed and sensitivity, expanding its scope of application and offering significant technical advantages.

[0067] Furthermore, the present application also proposes that the valve body is provided with a guide structure 14 at the end close to the first cavity 11;

[0068] The guide structure 14 can be designed in various forms, such as a conical guide hole or a structure with a guide groove, which can ensure that the push rod 16 can smoothly enter the first cavity 11 during insertion and maintain stable and accurate movement when pushing the valve core. The material of the guide structure 14 can be selected to be wear-resistant and have certain strength to ensure its reliability during long-term use.

[0069] By providing the guide structure 14 near the end of the valve body close to the first cavity 11, the application effectively solves the problem of deviation or jamming of the push rod 16 during insertion, thereby ensuring more stable and accurate movement of the valve core in the valve body. This design not only improves the efficiency and reliability of the valve, but also reduces the risk of failure caused by improper insertion of the push rod 16.

[0070] Further, referring to Figures 1 to 5 The application also proposes a flow structure comprising the above-mentioned valve and push rod 16. The push rod 16 at least comprises a first rod body 17 for insertion into the first cavity 11 to push the valve core, a fourth vent hole 18 is provided in the first rod body 17, a fifth vent hole 19 is provided in the side surface of the first rod body 17 and communicates with the fourth vent hole 18, a second cutout 20 is provided in the side surface of the first rod body 17 in the region communicating with the fourth vent hole 18, the radial dimension of the region where the second cutout 20 is located is smaller than the radial dimension of the remaining region of the side surface of the first rod body 17, and the second cutout 20 extends to the end of the first rod body 17 close to the valve.

[0071] The flow structure cooperates with the valve by designing the structure of the push rod 16 to achieve reliable one-way flow function. The first rod body 17 is the main part of the push rod 16, which is used to insert into the first cavity 11 of the valve and push the valve core to open and close the valve. The provision of the fourth vent hole 18 and the fifth vent hole 19 improves the ventilation performance of the entire structure, allowing gas to flow between the inside and outside of the push rod 16. The design of the second cutout 20 is a key feature of the structure. It reduces the radial dimension of the first rod body 17 in the region communicating with the fourth vent hole 18, which can ensure the space for gas flow and further improve the ventilation efficiency. At the same time, the second cutout 20 extends to the end of the first rod body 17 close to the valve, which can maintain good ventilation performance.

[0072] Through these designs, the flow structure not only can achieve reliable one-way flow function, but also can ensure good ventilation performance of the entire system. This structure can play an important role in occasions where precise control of one-way flow of gas or liquid is required, such as medical equipment, pneumatic systems, etc.

[0073] In specific embodiments, the first rod body 17 of the push rod 16 can be made of a variety of materials, such as metal, plastic, or composite materials, to suit different application requirements. The size and position of the fourth and fifth vent holes 18, 19 can be optimized based on the specific fluid characteristics to ensure optimal ventilation performance. The shape and size of the second notch 20 can also be adjusted according to actual needs to further improve gas circulation efficiency.

[0074] The design of the present application effectively solves the problem of controlling the unidirectional flow of fluid in the circulation structure by optimizing the structure of the push rod 16, while ensuring the stability and sealing of the valve core. Compared with the existing technology, the design of the present application has significant advantages. First, by providing vents and cutouts on the push rod 16, the ventilation performance of the entire system is improved. Secondly, the structural design of the push rod 16 ensures that good ventilation performance can be maintained when the valve core is fully inserted, further improving the reliability and service life of the system. Finally, the design of the present application also has high flexibility and can be adjusted and optimized according to different application requirements to adapt to a variety of usage scenarios.

[0075] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Persons skilled in the art will readily appreciate that the present application may be modified and altered in various ways. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A valve core, used to cooperate with a valve body structure to form a valve, the valve core comprising a first core body (1) and a third core body (3) which are connected end to end in sequence and whose radial dimensions increase in sequence, the first core body (1) is used to pass through a boss structure (4) inside the valve body structure, the first core body (1) is used to cooperate with a through hole (5) of the boss structure (4) inside the valve body structure to realize a switching function, the third core body (3) is used to contact an elastic member (6) inside the valve body structure and is provided with a first vent hole (7), and is characterized in that: The first ventilation hole (7) is provided in the central area of ​​the third core (3); A second vent hole (8) is provided on the side surface of the third core (3) and is in communication with the first vent hole (7).

2. A valve core according to claim 1, characterized in that: The first core (1) is provided with a second core (2) at one end close to the third core (3) for cooperating with the through hole (5) of the boss structure (4) inside the valve body structure to realize the switching function, the radial size of the second core (2) is larger than the first core (1) and smaller than the third core (3), and the second vent (8) is opened at one end of the third core (3) close to the second core (2).

3. The valve core according to claim 1, characterized in that: The second ventilation hole (8) passes through the side surface of the third core (3).

4. A valve core according to claim 2, characterized in that: The side surface of the third core (3) is provided with a first incision (9) in an area connected to the second vent hole (8), so that the radial dimension of the area where the first incision (9) is located is smaller than the radial dimension of the remaining areas of the side surface of the third core (3), and the first incision (9) extends to the end portion of the third core (3) connected to one end of the second core (2).

5. A valve core according to claim 4, characterized in that: A first installation groove (10) is provided on the side surface of the second core (2), and a sealing ring is provided in the first installation groove (10). The radial size of the sealing ring is smaller than the radial size of the third core (3).

6. The valve core according to claim 1, characterized in that: The third core (3) is a columnar structure, the first ventilation hole (7) is a circular hole, and the ratio of the diameter of the first ventilation hole (7) to the diameter of the third core (3) is (2.5-3.5): (4.5-5.5).

7. A valve, characterized in that: The valve comprises a valve core as described in any one of claims 1-6.

8. A valve according to claim 7, characterized in that: The valve at least includes the valve body, wherein the interior of the valve body is provided with a first cavity (11) and a second cavity (12) which correspond to each other and are connected at both ends, the boss structure (4) is provided between the first cavity (11) and the second cavity (12), the boss structure (4) is provided with the through hole (5) for connecting the first cavity (11) and the second cavity (12), the valve core is slidingly arranged in the second cavity (12), the valve body is also provided with a blocking member (15), the blocking member (15) is provided with an air hole connected to the outside for allowing gas to flow out, the blocking member (15) is arranged at one end away from the boss structure (4) and the first cavity (11), the elastic member (6) is arranged between the blocking member (15) and the valve core, the side of the valve body is provided with a third vent hole (13) connected to the second cavity (12), and the distance from the third vent hole (13) to the boss structure (4) is greater than the size of the third core (3) in the axial direction.

9. A valve according to claim 8, characterized in that: The valve body is provided with a guide structure (14) at the end portion close to the first cavity (11).

10. A circulation structure, characterized in that: The flow structure includes a valve according to any one of claims 7 to 9; Also includes: A push rod (16), the push rod (16) at least comprising a first rod body (17) for being inserted into the first cavity (11) to push the valve core, a fourth vent hole (18) being provided in the first rod body (17), a fifth vent hole (19) being provided on the side of the first rod body (17) and being communicated with the fourth vent hole (18), a second cutout (20) being provided on the side of the first rod body (17) in an area communicating with the fourth vent hole (18), so that the radial dimension of the area where the second cutout (20) is located is smaller than the radial dimension of the remaining areas of the side of the first rod body (17), and the second cutout (20) extends to the end of the first rod body (17) close to one end of the valve.

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