Diversion connecting valve

Abstract

A four-way pipe body comprises a left pipe body, a right pipe body, an upper pipe body and a lower pipe body which are coaxial, gas circuit connection is stabilized, and space is provided for component operation. The upper push rod and the lower push rod are accurately matched with the inner diameters of the corresponding pipe bodies, gas leakage is reduced, the diameters are slightly larger than the inner diameters of the left pipe body and the right pipe body, closing sealing performance is enhanced, gas flow direction accuracy is guaranteed, and reliability is high. And the upper push rod and the lower push rod cooperate with the connecting column, so that opening and closing of the valve can be quickly and stably switched. When medical oxygen is supplied in a centralized mode, medical staff can control oxygen on-off in real time according to needs, convenience and flexibility are achieved, and gas waste is avoided. The innovative online dosing function is bright, a containing cavity and a channel are formed in the lower push rod, a rubber plug is matched, an external injector is connected, and the device can be suitable for occasions such as dosing according to needs, medical oxygen uptake and industrial chemical reaction. The service life is prolonged through multiple sealing, the high-quality second sealing rings between the upper push rod and the pipe body and between the lower push rod and the pipe body are resistant to abrasion, corrosion and vibration, sealing is maintained, the maintenance cost is reduced, and gas conveying of all industries is powerfully supported.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, in particular to a diversion connecting valve. Background Art

[0002] The connection and control of oxygen pipelines play a vital role in many fields, including medical and industrial gas transportation. Among them, flow-diverting connecting valves are widely used as key components that connect two sections of oxygen pipelines and enable on / off control.

[0003] For example, in a hospital's centralized oxygen supply system, the main oxygen line from the main oxygen supply station must be precisely connected to the branch oxygen lines leading to individual wards and operating rooms. This requires a flow-diversion valve. It ensures stable and safe oxygen delivery to every user, and medical staff can flexibly adjust oxygen supply by opening or closing the valve at will based on actual needs.

[0004] However, existing flow control valves for connecting two oxygen lines currently on the market have numerous drawbacks. For one thing, their structural design is complex and contains numerous redundant components. This complexity not only increases manufacturing difficulty and cost, extending production cycles, but also requires technicians to spend significant time troubleshooting, disassembling, and replacing components during subsequent maintenance, significantly challenging the continued stable operation of the equipment.

[0005] On the other hand, a more prominent problem is the inability to achieve the function of online drug addition during the process. In some specific medical or industrial application scenarios, specific drugs need to be added in a timely manner during the oxygen delivery process. For example, in medical oxygen therapy, some patients may need to inhale a certain amount of atomized drugs while inhaling oxygen to assist in treatment; for example, in some chemical processes, the reaction process involving oxygen requires the online addition of catalysts in the pipeline. However, the existing diversion connection valve cannot meet this urgent demand due to the lack of corresponding drug addition design, which greatly limits its scope of application and makes it difficult to adapt to the increasingly diverse usage needs.

[0006] In summary, it is urgent to develop a diversion connection valve with a simple structure and mid-line dosing function. Summary of the Invention

[0007] In view of the problems pointed out in the background technology, the present invention proposes a diversion connecting valve to solve the above technical problems.

[0008] The technical solution of the present utility model is achieved as follows:

[0009] A diversion connecting valve includes a four-way tube body, which has a left tube body, a right tube body, an upper tube body, and a lower tube body. It also includes an upper push rod and a lower push rod respectively slidably connected to the upper tube body and the lower tube body. It also includes a connecting column connecting the upper push rod and the lower push rod. The lower end of the upper push rod is sealed with the inner wall of the upper tube body, and the upper end of the lower push rod is sealed with the inner wall of the lower tube body. The upper end of the upper push rod is connected with a first sealing ring. The upper push rod is pushed downward, and the lower end of the upper push rod enters the lower tube body. The lower end of the upper push rod forms a sealing connection with the inner wall of the lower tube body, and the first sealing ring forms a sealing fit with the inner wall of the upper tube body.

[0010] The utility model is further configured as follows: an accommodating cavity is provided in the lower push rod, a through hole 1 connected to the accommodating cavity is provided on the lower side surface of the lower push rod, a channel is provided in the connecting column along the up and down directions, the channel is connected to the accommodating cavity, a through hole 2 connected to the channel is provided on the outer side wall of the connecting column, and a rubber plug is adapted to be connected to the accommodating cavity.

[0011] The utility model is further configured such that the rubber stopper is provided with slits running through the upper and lower sides thereof.

[0012] The utility model is further configured such that the edge of the upper end of the upper push rod is provided with an annular upper limiting ring; the edge of the lower end of the lower push rod is provided with an annular lower limiting ring.

[0013] The present invention is further configured such that the diameter of the upper push rod is equal to the inner diameter of the upper tube body.

[0014] The present invention is further configured such that the diameter of the lower push rod is equal to the inner diameter of the lower tube body.

[0015] The present invention is further configured such that the diameter of the connecting column is smaller than the diameters of the upper push rod and the lower push rod.

[0016] The present invention is further configured as follows: the lower end of the upper push rod and the upper end of the lower push rod are respectively sealed with the second sealing ring of the upper tube body and the lower tube body.

[0017] The present invention is further configured such that the ends of the left tube body and the right tube body respectively form joint structures.

[0018] The utility model is further configured such that the upper tube body and the lower tube body are coaxially arranged, the inner diameter of the upper tube body is equal to the inner diameter of the lower tube body, and the upper push rod, the connecting column, and the lower push rod are coaxially arranged.

[0019] By adopting the above technical solution, the beneficial effects of the utility model are:

[0020] First, the structural design is ingenious and rational. The cross-shaped four-way pipe body is paired with coaxially arranged left and right pipe bodies, as well as upper and lower pipe bodies, ensuring the stability of the gas connection while providing an orderly space for the internal components to operate. The upper and lower push rods are precisely matched to the inner diameters of the corresponding pipe bodies, reducing the risk of gas leakage. The design, which is slightly larger than the inner diameters of the left and right pipe bodies, enhances the sealing when the valve is closed, ensuring precise and controllable gas flow, and greatly improving the reliability of the diversion connection valve in the gas delivery system.

[0021] Second, it features efficient on / off control. The coordinated linkage of the upper and lower push rods and the connecting column enables rapid and stable valve opening and closing. For example, in centralized medical oxygen supply scenarios, medical staff can instantly control oxygen flow based on ward needs. This convenient and efficient operation ensures timely and flexible oxygen supply, effectively avoiding gas waste.

[0022] Third, the innovative online dosing feature offers significant advantages. The lower push rod features an internal chamber, a connecting channel, and a compatible rubber stopper. Combined with an external syringe, it allows for on-demand dosing of medications during gas delivery. This is crucial in the field of medical oxygen therapy, allowing patients to precisely ingest aerosolized medication while inhaling oxygen, enhancing treatment effectiveness. In industrial production, it can also meet the need for online catalyst addition in chemical reactions, optimizing process flows and expanding its application scenarios.

[0023] Fourth, multiple seals ensure extended service life. The secondary sealing ring between the upper and lower push rods and the tube body is made of high-quality materials. It withstands the wear, corrosion, and vibration of daily operation, always maintaining a good seal, reducing maintenance costs, and ensuring the long-term stable operation of the diversion connection valve, providing solid support for gas transportation in various industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 This is a structural diagram of the diversion connecting valve of the utility model in the open state.

[0026] Figure 2 This is a cross-sectional view of the diversion connecting valve of the utility model in the open state.

[0027] Figure 3 It is an exploded schematic diagram of the present utility model.

[0028] Figure 4This is a structural diagram of the diversion connecting valve of the utility model in the closed state.

[0029] Figure 5 This is a cross-sectional view of the diversion connecting valve of the utility model in the closed state.

[0030] Explanation of the numbers in the accompanying drawings: left tube body 1, right tube body 2, upper tube body 3, lower tube body 4, upper push rod 5, lower push rod 6, connecting column 7, first sealing ring 8, accommodating chamber 9, through hole 10, channel 11, through hole 2 12, rubber plug 13, slit 14, upper limit ring 15, lower limit ring 16, sealing ring 17. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference as follows Figure 1-Figure 5 The utility model is described as follows:

[0033] Example: A flow-guiding connection valve comprises a cross-shaped four-way tube body comprising a left tube body 1, a right tube body 2, an upper tube body 3, and a lower tube body 4. The left tube body 1 and the right tube body 2 are coaxially positioned, ensuring smooth and stable gas flow between them. Joints are specially designed at the ends of the left and right tube bodies 1 and 2. These joints have a clear and critical purpose: to precisely and securely connect to an external gas path, thereby ensuring the integrity of the entire gas delivery chain.

[0034] At the same time, the upper tube body 3 and the lower tube body 4 are also coaxially arranged, and the inner diameter of the upper tube body 3 is exactly equal to the inner diameter of the lower tube body 4. This design detail is crucial for the coordinated operation of subsequent internal components.

[0035] Furthermore, the internal operating mechanism of the diversion connection valve is equipped with an upper push rod 5 and a lower push rod 6, which are respectively placed inside the upper tube body 3 and the lower tube body 4 in a sliding connection. These two push rods do not exist in isolation, but are tightly connected by a connecting column 7. The three are arranged coaxially. The diameter of the connecting column 7 is deliberately designed to be smaller than that of the upper push rod 5 and the lower push rod 6. This size difference lays the structural foundation for the opening and closing functions of the entire valve.

[0036] The lower end of the upper push rod 5 is sealed with the inner wall of the upper tube body 3, and the upper end of the lower push rod 6 is sealed with the inner wall of the lower tube body 4. The upper end of the upper push rod 5 is connected to the first sealing ring 8. At the lower end of the upper push rod 5, the lower end of the upper push rod 5 can fit tightly with the inner wall of the upper tube body 3, forming a reliable sealing effect and preventing gas leakage at this point. Similarly, a similar sealing connection is also constructed between the upper end of the lower push rod 6 and the inner wall of the lower tube body 4 to ensure that gas does not escape from this part. In addition, the upper end of the upper push rod 5 is also connected to the first sealing ring 8. This sealing ring serves as an additional sealing safeguard and further enhances the sealing of the valve when it is closed.

[0037] The diversion connection valve is in the closed state: the external driving force causes the upper push rod 5 to push downward along the axial direction of the tube body. Since the upper push rod 5, the connecting column 7 and the lower push rod 6 are an integral structure that is rigidly connected by the connecting column 7, they will move downward synchronously. During this process, the lower end of the upper push rod 5 gradually enters the interior of the lower tube body 4 until the lower end of the upper push rod 5 and the inner wall of the lower tube body 4 achieve a tight sealing connection state. At the same time, the first sealing ring 8 will also form a precise sealing fit with the inner wall of the upper tube body 3 as the upper push rod 5 moves downward. Through this double sealing mechanism, the communication path between the left tube body 1 and the right tube body 2 is completely blocked, the valve closing function is realized, and the gas is effectively prevented from circulating between the two tube bodies.

[0038] The diversion connection valve is in the open state: On the contrary, the external force acts on the lower push rod 6, pushing it upward. Similarly, due to the rigid connection between the three, the upper push rod 5, the connecting column 7 and the lower push rod 6 will move upward together. At this time, the upper push rod 5 gradually withdraws from the lower tube body 4, returns to the interior of the upper tube body 3, and returns to the initial stable state in which the lower end of the upper push rod 5 is sealed with the inner wall of the upper tube body 3, and the upper end of the lower push rod 6 is sealed with the inner wall of the lower tube body 4. In this process, the key is that the connecting column 7 will move as the whole moves upward, just to the area where the left tube body 1 and the right tube body 2 are connected. Since the diameter of the connecting column 7 is smaller than that of the upper push rod 5 and the lower push rod 6, it will not hinder the flow of gas, thereby allowing the left tube body 1 and the right tube body 2 to be smoothly connected, and the gas can flow between the two without obstacles, meeting the diversion requirements.

[0039] Lower push rod 6 defines a chamber 9. Its underside is provided with a through hole 10 that communicates with chamber 9. Connecting column 7 includes a vertical channel 11, which connects to chamber 9, ensuring a continuous medication delivery path. Connecting column 7 also includes a second through hole 12 on its outer wall that communicates with channel 11. This ensures that when medication is introduced from outside, it can flow smoothly through this carefully designed path to the intended destination. A rubber stopper 13 is fitted into chamber 9.

[0040] By adopting the above technical solution, when the dosing operation needs to be performed, it can be achieved with the help of a special external tool such as a syringe. The specific operation process is: the needle of the syringe is carefully and accurately inserted into the rubber stopper 13. Since the rubber material itself has a certain flexibility and sealing property, the needle can smoothly pass through the rubber stopper 13 without causing leakage, and then enter the channel 11 connected thereto. Subsequently, the operator slowly pushes the piston of the syringe, so that the medicine in the syringe gradually flows along the channel 11 under the action of pressure, and diffuses outward through the through hole 2 12 set on the outer wall of the connecting column 7. At this time, since the connecting column 7 is located in the area where the left tube body 1 and the right tube body 2 are connected when the valve is open, the medicine can smoothly enter the left tube body 1 and the right tube body 2, thereby successfully realizing the online dosing function during the gas delivery process, greatly expanding the applicable scenarios and functionality of the diversion connecting valve, and meeting diverse practical needs such as medical oxygen inhalation dosing auxiliary treatment and on-demand addition of catalysts during industrial gas delivery. This innovative design enables the diversion connection valve to efficiently integrate multiple key functions such as diversion, opening and closing control, and online dosing on the basis of a compact structure, providing a more convenient and efficient solution for applications in related fields.

[0041] The rubber stopper 13 is provided with a slit 14 running through the upper and lower sides thereof. The slit 14 can be set as required. The slit 14 is for facilitating the insertion of the syringe needle. When it is necessary to perform a dosing operation, the syringe needle must accurately and smoothly penetrate the rubber stopper 13 and then enter the internal channel connected to the accommodating cavity 9. For operators, in some operating scenarios, especially when fast and accurate dosing is required or in adverse environments such as poor lighting conditions and limited operating space, it is difficult to directly insert the needle into the complete rubber stopper, and it is easy for the needle to be deflected or the rubber stopper to be damaged, thereby affecting the smooth dosing and the subsequent sealing performance of the valve.

[0042] The presence of the slit 14 effectively resolves these difficulties. It creates a path in the rubber stopper 13 for the needle to enter. The operator only needs to gently insert the needle along the slit 14 to accurately penetrate the rubber stopper 13 and smoothly reach the connection between the interior of the accommodating cavity 9 and the channel 11. This greatly reduces the difficulty and risk of error in the operation and improves the efficiency and accuracy of the dosing operation.

[0043] The upper edge of the upper push rod 5 is provided with an annular upper stop ring 15, the outer diameter of which is larger than that of the upper tube 3; the lower edge of the lower push rod 6 is provided with an annular lower stop ring 16, the outer diameter of which is larger than that of the lower tube 4. To ensure that the two push rods do not accidentally fall out when sliding within their respective tubes, an annular upper stop ring 15 and a lower stop ring 16 are specially provided on the upper edge of the upper push rod 5 and the lower edge of the lower push rod 6, respectively.

[0044] The diameter of the upper push rod 5 is equal to the inner diameter of the upper tube body 3. The diameter of the lower push rod 6 is equal to the inner diameter of the lower tube body 4. The upper push rod 5 and the lower push rod 6 have the same diameter, and the diameter of the upper push rod 5 and the lower push rod 6 is slightly larger than the inner diameter of the left tube body 1 and the right tube body 2.

[0045] First, let's focus on the dimensional relationship between the push rod and the tube body. The diameter of the upper push rod 5 is precisely set to be equal to the inner diameter of the upper tube body 3. This design contains multiple considerations. On the one hand, the equal diameter ensures that the upper push rod 5 can maintain a close fit with the inner wall of the tube body when sliding in the upper tube body 3, minimizing the gap between the two, thereby reducing the risk of gas leakage in this area. Under actual gas delivery conditions, even a tiny gap may cause gas to escape, affecting the delivery efficiency and the pressure stability of the entire system. The close dimensional fit between the upper push rod 5 and the upper tube body 3 effectively avoids this hidden danger.

[0046] Similarly, the diameter of the lower push rod 6 is designed to be equal to the inner diameter of the lower tube 4. Based on the same principle as the upper push rod 5, this ensures the sealing and stability of the lower push rod 6 as it slides along the lower tube 4. Furthermore, the diameters of the upper and lower push rods 5, 6 are not only identical but also slightly larger than the inner diameters of the left and right tubes 1, 2. This size difference further enhances the valve's sealing properties. When the valve is closed, the upper or lower push rod 5, 6, with its slightly larger diameter, can more effectively block the connection between the left and right tubes 1, 2, preventing gas from passing between the two tubes during periods when gas should not flow, ensuring precise opening and closing control of the diversion connection valve.

[0047] The lower end of the upper push rod 5 and the upper end of the lower push rod 6 are respectively sealed with the upper tube body 3 and the lower tube body 4 by a second sealing ring 17. Furthermore, in order to further enhance the sealing effect between the push rod and the tube body, the lower end of the upper push rod 5 and the upper end of the lower push rod 6 are respectively provided with a second sealing ring 17 that seals with the upper tube body 3 and the lower tube body 4. This sealing ring, as a key sealing component, is made of a special rubber or polymer material that is adapted to the material and working conditions of the tube body and the push rod, and has good elasticity, wear resistance and corrosion resistance. In the daily operation of the valve, whether the upper push rod 5 moves up and down with the opening and closing of the valve, or the lower push rod 6 moves synchronously and cooperatively, the second sealing ring 17 always fits tightly to the contact part between the push rod and the tube body, filling any tiny gaps that may be caused by factors such as processing accuracy, mechanical vibration or thermal expansion and contraction. It can effectively prevent gas from leaking from the connection between the push rod and the tube body, ensuring that the gas can only flow along the predetermined diversion path, that is, when the valve is open, it flows smoothly from the left tube body 1 through the area where the connecting column 7 is located to the right tube body 2, or completely blocks this flow path when the valve is closed. In this way, the diversion connecting valve can always maintain an efficient and stable working state in complex and changeable gas transportation application scenarios, providing reliable technical support for fields such as medical oxygen supply and industrial gas distribution.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flow-guiding connecting valve, comprising a four-way pipe body, wherein the four-way pipe body comprises a left pipe body (1), a right pipe body (2), an upper pipe body (3), and a lower pipe body (4), and is characterized in that: The utility model also includes an upper push rod (5) and a lower push rod (6) which are respectively slidably connected in the upper tube body (3) and the lower tube body (4), and a connecting column (7) connecting the upper push rod (5) and the lower push rod (6). The lower end of the upper push rod (5) is sealedly connected to the inner wall of the upper tube body (3), and the upper end of the lower push rod (6) is sealedly connected to the inner wall of the lower tube body (4). The upper end of the upper push rod (5) is connected to a first sealing ring (8). When the upper push rod (5) is pushed downward, the lower end of the upper push rod (5) enters the lower tube body (4), and the lower end of the upper push rod (5) forms a sealing connection with the inner wall of the lower tube body (4). The first sealing ring (8) forms a sealing fit with the inner wall of the upper tube body (3).

2. A flow-guiding connecting valve according to claim 1, characterized in that: The lower push rod (6) is provided with an accommodating chamber (9), and a through hole (10) communicating with the accommodating chamber (9) is provided on the lower side surface of the lower push rod (6). A channel (11) is provided in the upper and lower directions of the connecting column (7), and the channel (11) is connected to the accommodating chamber (9). A through hole (2) communicating with the channel (11) is provided on the outer wall of the connecting column (7), and a rubber plug (13) is adapted to be connected to the accommodating chamber (9).

3. The flow-guiding connecting valve according to claim 2, characterized in that: The rubber stopper (13) is provided with slits (14) running through the upper and lower sides thereof.

4. The flow-guiding connecting valve according to claim 2, characterized in that: The edge of the upper end of the upper push rod (5) is provided with an annular upper limit ring (15); the edge of the lower end of the lower push rod (6) is provided with an annular lower limit ring (16).

5. The flow-guiding connecting valve according to claim 2, characterized in that: The diameter of the upper push rod (5) is equal to the inner diameter of the upper tube body (3).

6. The flow-guiding connecting valve according to claim 2, characterized in that: The diameter of the lower push rod (6) is equal to the inner diameter of the lower tube body (4).

7. The flow-guiding connecting valve according to claim 2, characterized in that: The diameter of the connecting column (7) is smaller than the diameters of the upper push rod (5) and the lower push rod (6).

8. The flow-guiding connecting valve according to claim 2, characterized in that: The lower end of the upper push rod (5) and the upper end of the lower push rod (6) are respectively sealed with the second sealing ring (17) of the upper tube body (3) and the lower tube body (4).

9. The flow-guiding connecting valve according to claim 2, characterized in that: The ends of the left tube body (1) and the right tube body (2) respectively form joint structures.

10. The flow-guiding connecting valve according to claim 2, characterized in that: The upper tube body (3) and the lower tube body (4) are coaxially arranged, the inner diameter of the upper tube body (3) is equal to the inner diameter of the lower tube body (4), and the upper push rod (5), the connecting column (7), and the lower push rod (6) are coaxially arranged.

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