A medical gas terminal dustproof suspension device

Abstract

This invention discloses a dustproof suspension device for a medical gas terminal, comprising a suspension extension arm and a gas terminal box. The gas terminal box has a rectangular array of interfaces, and a gas supply pipeline and a gas connector are provided within the gas terminal box. A sealing cylinder coaxial with the interface is provided on the inner side of each interface, and a one-way ventilation component is provided on the outer surface of the gas connector. A telescopic tube assembly is provided between the end of the gas connector facing away from the interface and the gas supply pipeline. A sealing component is provided at the interface, and a driving component is provided outside the sealing cylinder. A pre-cavity is formed on the side of the gas connector facing the interface, and an air inlet is provided on the clean cavity. A filter block is provided at the air inlet. This application solves the problem that existing gas terminals cannot be individually connected and closed by using a rectangular array of sealing and driving components corresponding to the gas connectors within the gas terminal box.

Description

Technical Field

[0001] This invention relates to the field of medical equipment technology, specifically to a medical gas terminal dustproof suspension device. Background Technology

[0002] As a key component of a central medical gas supply system, the medical gas terminal plays a crucial role in accurately acquiring various medical gases from the system pipelines, including oxygen, high-pressure air, and negative pressure gases. This device occupies a pivotal position between the hospital's central gas supply system and various medical devices, serving as a critical connection point for seamless integration and stable gas supply.

[0003] In practical installation layouts, medical gas terminals are often placed on external equipment such as ward equipment belts, gas boxes, terminal boxes, pendant towers, and suspension bridges. Given the need for convenience and efficiency in daily operations for medical staff, the gas connection ports of medical gas terminals are often designed to be exposed on the device surface. However, this design approach raises a series of potential risks in actual use. Because the gas connection ports are directly exposed to the external environment, a large number of airborne dust particles easily adhere to them, accumulating over time; simultaneously, various pathogens can also take advantage of this vulnerability, breeding and multiplying on the connection port surface. When medical staff use the terminal to provide gas support to patients, this contaminated dust and pathogens are highly likely to enter the patient's body with the gas delivery, significantly increasing the risk of infection and posing a serious threat to the patient's medical safety and recovery process.

[0004] Chinese patent application (publication number CN118121424A) discloses a highly reliable medical gas terminal, the structure of which includes a suspension extension for providing suspension support; a multi-channel gas relay is disposed on the suspension extension, the multi-channel gas relay including a multi-channel gas rotating connector and a multi-channel gas pipeline, both of which are disposed on the suspension extension to cooperate in delivering medical gas to the terminal; a multi-channel gas terminal is disposed on the suspension extension, the multi-channel gas terminal including a gas transmission relay and a gas terminal telescopic component, the gas transmission relay delivering medical gas to the connected gas terminal telescopic component on the suspension extension, and the gas terminal telescopic component automatically extending and sealing the gas terminal on the gas transmission relay.

[0005] This gas terminal utilizes the vertical movement of a guide sealing plate to regulate the connection between the delivery through-hole and the gas terminal connector. Specifically, the guide sealing plate moves smoothly along a predetermined vertical track, and by changing its relative position to the delivery through-hole and the gas terminal connector, it either opens or blocks the connection path between them, thereby achieving controllability of gas delivery.

[0006] However, when a specific gas terminal is activated, the remaining gas terminal terminals in the same row are also exposed. This exposure leaves the other gas terminal terminals directly exposed to the surrounding environment, lacking necessary protective barriers. Since the surrounding environment is filled with suspended dust particles, these particles gradually adhere to these exposed gas terminal terminals under the influence of natural settling and airflow disturbances. Over time, the accumulated dust not only corrodes the appearance of the gas terminal terminals but may also interfere with their subsequent precise docking and gas transmission performance, posing a potential threat to the stable operation of the entire gas delivery system. Furthermore, when the gas terminal terminals extend or retract, it is equivalent to drawing air from the outside into the telescopic transmission pipe, which can lead to external dust entering the telescopic transmission pipe under negative pressure and contaminating the gas terminal terminals. Summary of the Invention

[0007] To address the problems of existing technologies, a dustproof suspension device for medical gas terminals is provided. By using a rectangular array of sealing and driving components corresponding to the gas connectors in the gas terminal box, each gas connector can be individually connected and sealed, thus solving the problem that existing gas terminals cannot be individually connected and sealed.

[0008] To address the problems of existing technologies, this invention provides a medical gas terminal dustproof suspension device, comprising a suspended extension arm connected to the ceiling and a gas terminal box connected to the end of the suspended extension arm; the gas terminal box has a rectangular array of interfaces, a gas supply pipeline and a gas connector communicating with the gas supply pipeline are provided in the gas terminal box, a sealing cylinder coaxial with the interface is provided on the inner side of the interface, the gas connector extends into the sealing cylinder, a one-way ventilation component is provided between the outer surface of the gas connector and the inner wall of the sealing cylinder; a telescopic tube assembly is provided between the end of the gas connector away from the interface and the gas supply pipeline; a sealing component is provided at the interface, and a driving component is provided outside the sealing cylinder for guiding the gas connector toward the interface and driving the sealing component to open the interface; a clean cavity with dynamically changing volume with the displacement of the gas connector is formed between the side of the gas connector away from the interface and the inner wall of the sealing cylinder, and a pre-cavity is formed between the side of the gas connector facing the interface and the interface, and an air inlet communicating with the inner cavity of the gas terminal box is provided on the clean cavity, and a filter block is provided at the air inlet.

[0009] Preferably, an outer fixing ring is provided at the end of the sealing cylinder facing away from the interface, the air inlet is distributed circumferentially on the outer fixing ring, and an outer fixing cylinder is provided on the inner circumference of the outer fixing ring, coaxial with it and extending towards the interface. The filter block is provided at the end of the outer fixing ring facing the interface. An inner fixing ring is provided on the circumferential surface of the gas connector, coaxial with it, and an inner fixing cylinder is provided on the inner fixing ring, coaxial with it and extending in the direction away from the interface. The inner fixing cylinder and the outer fixing cylinder are in a sealed sliding fit. The clean cavity is formed between the outer wall of the inner fixing cylinder and the inner wall of the sealing cylinder. The inner fixing ring is connected to the drive assembly for transmission.

[0010] Preferably, the one-way ventilation assembly includes a connecting cylinder, a fixed plug ring, a sliding plug ring, and a ventilation elastic element; the connecting cylinder is coaxially disposed on the outer wall of the gas connector, and a positioning plug ring is coaxially disposed on the end of the connecting cylinder facing the interface, the outer diameter of the positioning plug ring being smaller than the inner diameter of the sealing cylinder; the fixed plug ring is coaxially and fixedly disposed on the outer wall of the connecting cylinder, a fixing inclined surface is disposed on the end of the fixed plug ring facing the interface, and a fixing plug groove is disposed on the outer wall of the fixed plug ring distributed circumferentially; the sliding plug ring is coaxially and slidably disposed on the outer wall of the connecting cylinder, the outer wall of the sliding plug ring being in a sealing sliding fit with the inner wall of the sealing cylinder, the sliding plug ring being located between the positioning plug ring and the fixed plug ring, and a sliding inclined surface that can engage with the fixing inclined surface is disposed on the end of the sliding plug ring away from the interface, when the sliding plug ring is away from the fixed plug ring, an air passage is formed between the fixing inclined surface and the sliding inclined surface, and a sliding air groove is disposed on the inner wall of the sliding plug ring distributed circumferentially, the outer wall of the sliding plug ring being in a sealing sliding fit with the inner wall of the sealing cylinder; the ventilation elastic element is disposed between the sliding plug ring and the positioning plug ring.

[0011] Preferably, the outer wall of the sliding plug ring is provided with a fitting groove coaxial with it, and a sealing ring coaxial with it is provided in the fitting groove, and the sealing ring is interference-fitted with the inner wall of the sealing cylinder.

[0012] Preferably, the plugging assembly includes a plugging ring, a plugging leaf, and a drive ring; the plugging ring is coaxially disposed in the interface; the plugging leaf is distributed circumferentially at one end of the plugging ring, and a fixed shaft and a drive shaft are disposed on the outer side of the plugging leaf away from the axis of the plugging ring, with the fixed shaft rotatably disposed in the plugging ring; the drive ring is coaxially rotatably disposed on one side of the plugging ring, and a drive groove is disposed on the drive ring circumferentially, the drive groove extending in a direction deviating from the radial direction of the drive ring, the drive shaft extending into the drive groove and slidingly engaging with it, and a drive cylinder coaxially disposed at the end of the drive ring opposite to the interface, the drive cylinder being drively connected to the drive assembly.

[0013] Preferably, the drive assembly includes a bracket, a transmission ring, an electromagnetic coil, and a return elastic element; the bracket is disposed inside the interface; the transmission ring is slidably disposed on the bracket and coaxial with the interface, and a transmission plate distributed circumferentially is provided at one end of the transmission ring facing the interface, and a drive pin extending radially is provided on the transmission plate; the electromagnetic coil is disposed in the bracket and faces the transmission ring; the drive cylinder is provided with an arc-shaped groove distributed circumferentially, and the drive pin extends into the arc-shaped groove and slides therewith; the return elastic element is disposed in the bracket and abuts against the transmission ring.

[0014] Preferably, the outer wall of the sealing ring is provided with a sealing cylinder extending into the gas terminal box, and the support includes an inner positioning ring, an outer positioning ring and a connecting column; the outer positioning ring is coaxially and fixedly connected to the sealing cylinder; the inner positioning ring is disposed in the gas terminal box and is coaxial with the outer positioning ring; the connecting column is distributed circumferentially between the outer positioning ring and the inner positioning ring along the sealing cylinder, and the two ends of the connecting column are fixedly connected to the outer positioning ring and the inner positioning ring respectively.

[0015] Preferably, a stop ring is provided on the connecting column, an electromagnetic coil is provided on the stop ring, and an elastic element is provided between the stop ring and the transmission ring.

[0016] Preferably, the inner fixing ring has a transmission rod extending circumferentially at one end opposite to the interface, the transmission rod slides through the transmission ring and is provided with a limit ring, a transmission elastic element is provided between the transmission ring and the inner fixing ring, and the arc-shaped groove has a straight groove extending axially along the drive cylinder at one end opposite to the interface.

[0017] Preferably, the telescopic tube assembly includes a fixed tube and a sliding tube;

[0018] The fixed pipe is connected to the gas supply pipe assembly, and an outer stepped groove is provided on the inner wall of the fixed pipe at the end facing the interface.

[0019] The sliding tube and the fixed ring slide and seal together. The sliding tube is connected to the gas connector. An inner stepped groove is provided at the end of the outer wall of the sliding tube away from the interface. A reset elastic element is provided between the inner stepped groove and the outer stepped groove. A retaining ring is provided on the outer wall of the sliding tube, and the fixed tube abuts against the retaining ring.

[0020] The advantages of this application compared to the prior art are:

[0021] This application solves the problem of existing gas terminals being unable to be individually connected and closed by using a rectangular array of sealing and driving components corresponding to the gas connectors within the gas terminal box. Simultaneously, when the interface is closed, the gas connector moves inward within the sealed cylinder, allowing clean gas from the clean chamber to enter the pre-cavity of the gas connector through a one-way ventilation component. This ensures that the pre-cavity is filled with clean gas, effectively preventing dusty external air from entering and contaminating the gas connector. Attached Figure Description

[0022] Figure 1 This is a perspective view of a medical gas terminal dustproof suspension device according to the present invention.

[0023] Figure 2 This is a three-dimensional sectional view of a medical gas terminal dustproof suspension device according to the present invention.

[0024] Figure 3 yes Figure 2 A magnified view of part A.

[0025] Figure 4 This is a perspective view of the sealing component in a medical gas terminal dustproof suspension device of the present invention.

[0026] Figure 5 This is a cross-sectional view of the sealing component in a medical gas terminal dustproof suspension device of the present invention.

[0027] Figure 6 yes Figure 5 A magnified view of section B.

[0028] Figure 7 yes Figure 5 A magnified view of a portion of point C.

[0029] Figure 8 This is an exploded perspective view of the sealing component in a medical gas terminal dustproof suspension device of the present invention.

[0030] Figure 9 This is an exploded perspective view of the sealing component and the driving component in a medical gas terminal dustproof suspension device of the present invention.

[0031] Figure 10 This is a perspective view of the gas connector and telescopic tube assembly in a medical gas terminal dustproof suspension device of the present invention.

[0032] Figure 11 This is an exploded perspective view of the one-way ventilation component in a medical gas terminal dustproof suspension device of the present invention.

[0033] The diagram is labeled as follows: 1. Suspension extension arm; 2. Gas terminal box; 3. Sealing cylinder; 31. Clean chamber; 32. Pre-filter chamber; 33. Filter block; 34. Outer fixing ring; 341. Outer fixing cylinder; 4. Gas connector; 41. Inner fixing ring; 411. Inner fixing cylinder; 412. Transmission rod; 413. Limiting ring; 414. Transmission elastic element; 5. One-way ventilation assembly; 51. Connecting cylinder; 511. Positioning plug ring; 52. Fixing plug ring; 521. Fixing plug groove; 53. Sliding plug ring; 531. Sliding gas groove; 54. Ventilation elastic element; 55. Sealing ring; 6. Telescopic tube Group; 61. Fixed tube; 62. Sliding tube; 63. Reset elastic element; 64. Snap ring; 7. Sealing assembly; 71. Sealing ring; 711. Sealing cylinder; 72. Sealing leaf; 721. Fixed shaft; 722. Drive shaft; 73. Drive ring; 731. Drive groove; 732. Drive cylinder; 7321. Arc groove; 7322. Straight groove; 8. Drive assembly; 811. Inner positioning ring; 812. Outer positioning ring; 813. Connecting column; 814. Stop ring; 82. Transmission ring; 821. Transmission plate; 822. Drive pin; 83. Electromagnetic coil; 84. Return elastic element. Detailed Implementation

[0034] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, this application provides a medical gas terminal dustproof suspension device, including a suspension extension arm 1 connected to the ceiling and a gas terminal box 2 connected to the end of the suspension extension arm 1; the gas terminal box 2 has a rectangular array of interfaces, and the gas terminal box 2 is provided with a gas supply pipeline and a gas connector 4 communicating with the gas supply pipeline. A sealing cylinder 3 coaxial with the interface is provided inside the interface, and the gas connector 4 extends into the sealing cylinder 3. A one-way ventilation component 5 is provided between the outer surface of the gas connector 4 and the inner wall of the sealing cylinder 3; the end of the gas connector 4 opposite to the interface is connected to the gas supply pipeline. Telescopic tube assembly 6 is provided between the gas pipelines; a sealing assembly 7 is provided at the interface; a driving assembly 8 is provided on the outside of the sealing cylinder 3 to guide the gas connector 4 toward the interface and drive the sealing assembly 7 to open the interface; a clean chamber 31 is formed between the side of the gas connector 4 away from the interface and the inner wall of the sealing cylinder 3, the volume of which dynamically changes with the displacement of the gas connector 4; a pre-cavity 32 is formed between the side of the gas connector 4 facing the interface and the interface; an air inlet communicating with the inner cavity of the gas terminal box 2 is provided on the clean chamber 31, and a filter block 33 is provided at the air inlet.

[0036] After the gas connector 4 abuts against the inside of the interface, the sealing assembly 7 opens the interface.

[0037] The gas in the clean chamber 31 can flow to the pre-cavity 32 through the one-way ventilation component 5.

[0038] The suspension system includes a suspension extension arm 1 that is securely connected to the ceiling. The suspension extension arm 1 has sufficient structural strength and length to provide reliable support for subsequent components, and its end is connected to a gas terminal box 2.

[0039] The interface is used to connect to various gas-using devices. A gas supply pipeline is laid inside the gas terminal box 2, which is responsible for transporting medical gas and connects to multiple gas connectors 4 along the way. On the inside of each interface, a sealing cylinder 3 is installed coaxially with it, and the gas connector 4 extends into the internal space of the sealing cylinder 3.

[0040] A sealing component 7 is provided at the interface to enhance the sealing performance and prevent the intrusion of external impurities. A drive component 8 is installed on the outside of the sealing cylinder 3. The drive component 8 is used to guide the gas connector 4 to move smoothly towards the interface, and when it moves into place, it can drive the sealing component 7 to close the interface, thereby achieving a reliable sealing effect when not in use.

[0041] The side of the gas connector 4 facing away from the interface naturally encloses the inner wall of the sealing cylinder 3 to form a clean chamber 31. The volume of the clean chamber 31 changes dynamically in real time as the gas connector 4 is displaced. That is, when the drive assembly 8 guides the gas connector 4 to its position, the volume of the clean chamber 31 continuously increases, causing its internal pressure to be lower than the internal pressure of the gas terminal box 2. This allows the gas in the gas terminal box 2 to pass through the air inlet and be filtered by the filter block 33 before entering the clean chamber 31. The filter block 33 is a filter cloth or filter screen, which can effectively intercept dust entering the clean chamber 31.

[0042] After the drive assembly 8 guides the gas connector 4 into place, the drive sealing assembly opens the connector, making it easier for the gas-using equipment to connect to the gas connector 4.

[0043] After the gas-using equipment finishes using gas, the drive component 8 first guides the sealing component to close the interface, and then guides the gas connector 4 to reset in the direction away from the interface. During this process, the volume of the pre-cavity 32 increases, resulting in a decrease in pressure. Meanwhile, the clean gas in the clean chamber 31 can flow to the pre-cavity 32 through the one-way ventilation component 5, ensuring that the end of the gas connector 4 facing the interface is in a dust-free state, thereby preventing the gas connector 4 from being contaminated.

[0044] like Figure 4 , Figure 5 and Figure 7As shown, an outer fixing ring 34 is provided at the end of the sealing cylinder 3 facing away from the interface. The air inlet is distributed circumferentially on the outer fixing ring 34. An outer fixing cylinder 341 is provided on the inner circumference of the outer fixing ring 34, coaxial with it and extending towards the interface. The filter block 33 is provided at the end of the outer fixing ring 34 facing the interface. An inner fixing ring 41 is provided on the circumferential surface of the gas connector 4, coaxial with it. An inner fixing cylinder 411 is provided on the inner fixing ring 41, coaxial with it and extending in the direction away from the interface. The inner fixing cylinder 411 and the outer fixing cylinder 341 are sealed and slidingly fitted. The clean cavity 31 is formed between the outer wall of the inner fixing cylinder 411 and the inner wall of the sealing cylinder 3. The inner fixing ring 41 is connected to the drive assembly 8 for transmission.

[0045] An outer fixing ring 34 is mounted on the sealing cylinder 3. This outer fixing ring 34 has a ring-shaped structure. The air inlets are arranged circumferentially on the outer fixing ring 34. This arrangement ensures that the incoming gas is evenly dispersed, guaranteeing a stable and balanced flow of air into the subsequent chambers. An outer fixing cylinder 341, coaxial with the inner circumference of the outer fixing ring 34, extends directly towards the interface, providing a precise path reference for the fitting and movement guidance of internal components. A filter block 33 is positioned at the end of the outer fixing ring 34 facing the interface, thereby filtering dust passing through the air inlet.

[0046] The inner fixing cylinder 411 is coaxial with the inner fixing ring 41 and extends in a direction away from the interface. A sealed sliding fit is established between the inner fixing cylinder 411 and the outer fixing cylinder 341. This allows the volume of the clean chamber 31 to increase when the gas connector 4 moves the inner fixing cylinder 411, and guides outside air into the clean chamber 31 after it has been filtered by the filter block 33.

[0047] like Figure 5 , Figure 6 , Figure 10 and Figure 11As shown, the one-way ventilation assembly 5 includes a connecting cylinder 51, a fixed plug ring 52, a sliding plug ring 53, and a ventilation elastic element 54. The connecting cylinder 51 is coaxially disposed on the outer wall of the gas connector 4, and a positioning plug ring 511 coaxially disposed at the end of the connecting cylinder 51 facing the interface. The outer diameter of the positioning plug ring 511 is smaller than the inner diameter of the sealing cylinder 3. The fixed plug ring 52 is coaxially and fixedly disposed on the outer wall of the connecting cylinder 51, and a fixing inclined surface is disposed at the end of the fixed plug ring 52 facing the interface. The outer wall of the fixed plug ring 52 is provided with fixing plug grooves 521 distributed circumferentially thereon. The sliding plug ring 53 is coaxially and slidably disposed on the connecting cylinder. The outer wall of the sliding plug ring 53 is in a sealing sliding fit with the inner wall of the sealing cylinder 3. The sliding plug ring 53 is located between the positioning plug ring 511 and the fixed plug ring 52. The end of the sliding plug ring 53 away from the interface is provided with a sliding inclined surface that can be engaged with the fixed inclined surface. When the sliding plug ring 53 is away from the fixed plug ring 52, an air passage is formed between the fixed inclined surface and the sliding inclined surface. The inner wall of the sliding plug ring 53 is provided with sliding air grooves 531 distributed along its circumference. The outer wall of the sliding plug ring 53 is in a sealing sliding fit with the inner wall of the sealing cylinder 3. The ventilated elastic element 54 is provided between the sliding plug ring 53 and the positioning plug ring 511.

[0048] The end of the connecting cylinder 51 facing the interface has an integrally formed positioning plug ring 511. This positioning plug ring 511 is coaxial with the connecting cylinder 51, and its outer diameter is smaller than the inner diameter of the sealing cylinder 3. This ensures that the connecting cylinder 51 has reasonable room for movement within the sealing cylinder 3, and that clean gas can flow between the outer wall of the positioning plug ring 511 and the inner wall of the sealing cylinder 3.

[0049] When the gas connector 4 moves the sliding plug ring 53 close to the interface, the sliding inclined surface of the sliding plug ring 53 abuts against the fixed inclined surface of the fixed plug ring 52 to block the air passage, thereby increasing the pressure in the pre-filter chamber 32. This ensures that clean air in the pre-filter chamber 32 can overflow when the sealing assembly 7 is opened, preventing dust in the air from entering the pre-filter chamber 32 due to the opening action of the sealing assembly 7.

[0050] When the gas connector 4 moves the sliding plug ring 53 away from the interface, the sliding plug ring 53 overcomes the elastic force of the ventilation elastic element 54 and moves away from the fixed plug ring 52, thereby opening the air passage. This allows the air in the clean chamber 31 to pass through the fixed plug groove 521, the air passage, and the sliding plug groove in sequence before entering the pre-cavity 32.

[0051] like Figure 7 As shown, the outer wall of the sliding plug ring 53 is provided with a sleeve groove coaxial with it, and a sealing ring 55 coaxial with it is provided in the sleeve groove. The sealing ring 55 is interference-fitted with the inner wall of the sealing cylinder 3.

[0052] To ensure that the sliding plug ring 53 can slide and seal against the inner wall of the sealing cylinder 3, a sealing ring 55 is fitted on the outer wall of the sliding plug ring 53, so that the sealing ring 55 is interference-fitted with the inner wall of the sealing cylinder 3. This ensures that gas will not leak out through the gap between the sliding plug ring 53 and the inner wall of the sealing cylinder 3, while also ensuring that the sliding plug ring 53 has sufficient friction to move away from the fixed plug ring 52 when the connection joint is away from the interface.

[0053] like Figure 5 , Figure 8 and Figure 9 As shown, the sealing assembly 7 includes a sealing ring 71, a sealing leaf 72, and a drive ring 73. The sealing ring 71 is coaxially disposed in the interface. The sealing leaf 72 is distributed circumferentially at one end of the sealing ring 71. A fixed shaft 721 and a drive shaft 722 are disposed on the outer side of the sealing leaf 72 away from the axis of the sealing ring 71. The fixed shaft 721 is rotatably disposed in the sealing ring 71. The drive ring 73 is coaxially rotatably disposed on one side of the sealing ring 71. The drive ring 73 is provided with a drive groove 731 distributed circumferentially on it. The drive groove 731 extends in a direction deviating from the radial direction of the drive ring 73. The drive shaft 722 extends into the drive groove 731 and slides with it. A drive cylinder 732 is disposed coaxially with the end of the drive ring 73 away from the interface. The drive cylinder 732 is connected to the drive assembly 8 in a transmission manner.

[0054] When the drive assembly 8 is activated, the drive cylinder 732 rotates relative to the sealing ring 71, which in turn allows the drive ring 73 to rotate relative to the sealing ring 71. The drive groove 731, which deviates from the radial direction of the drive ring 73, causes the drive column to gradually move away from the axis of the sealing ring 71. This causes the drive shaft 722 of all the sealing blades 72 to rotate a certain angle relative to the fixed shaft 721, allowing the sealing blades 72 to open the interface to expose the gas connector 4, thus facilitating the connection of the gas-using equipment.

[0055] like Figure 5 As shown, the drive assembly 8 includes a bracket, a transmission ring 82, an electromagnetic coil 83, and a return elastic element 84. The bracket is disposed inside the interface. The transmission ring 82 is slidably disposed on the bracket and coaxial with the interface. A transmission plate 821 is provided at one end of the transmission ring 82 facing the interface, and a drive pin 822 extending radially is provided on the transmission plate 821. The electromagnetic coil 83 is disposed in the bracket and faces the transmission ring 82. An arc-shaped groove 7321 is provided on the drive cylinder 732, which is distributed circumferentially. The drive pin 822 extends into the arc-shaped groove 7321 and slides therein. The return elastic element 84 is disposed in the bracket and abuts against the transmission ring 82.

[0056] The bracket provides a reliable support platform for the various components that are subsequently installed, ensuring that each component maintains a precise relative position during operation.

[0057] The transmission plate 821 extends radially outward from the main body of the transmission ring 82, forming a key connection node for power transmission. Each transmission plate 821 is also machined with a drive pin 822 extending radially along it.

[0058] The electromagnetic coil 83 is housed inside the bracket, precisely oriented towards the transmission ring 82. As a power source, the electromagnetic coil 83 generates a magnetic field based on the principle of electromagnetic induction when a specific current is applied. This magnetic field interacts electromagnetically with the transmission ring 82, causing the transmission ring 82 to overcome the elastic force of the return elastic element 84 and displace, thereby driving the connected components to move.

[0059] An arc-shaped groove 7321 is carved into the circumferential surface of the drive cylinder 732. The drive pin 822 extends into the arc-shaped groove 7321 and achieves a sliding fit with it. When the drive pin 822 moves along the axial direction of the interface, the inclined surface of the arc-shaped groove 7321 is subjected to a force along the axial direction of the interface, which guides the drive cylinder 732 to rotate. This, in turn, causes the drive ring 73 to rotate relative to the sealing ring 71 by a certain angle, thereby opening the interface.

[0060] In the initial state where the electromagnetic coil 83 is not energized, the return elastic element 84 provides a stable preload to the transmission ring 82, maintaining its initial position. When the electromagnetic coil 83 is energized and the transmission ring 82 is displaced, the return elastic element 84 stores elastic potential energy. When the electromagnetic coil 83 is de-energized, it uses its own elastic force to drive the transmission ring 82 back to its original position, ensuring that the drive assembly 8 can operate stably and repeatedly.

[0061] like Figure 5 As shown, the outer wall of the sealing ring 71 is provided with a sealing cylinder 711 extending into the gas terminal box 2. The support includes an inner positioning ring 811, an outer positioning ring 812, and a connecting column 813. The outer positioning ring 812 is coaxially and fixedly connected to the sealing cylinder 711. The inner positioning ring 811 is disposed inside the gas terminal box 2 and is coaxial with the outer positioning ring 812. The connecting column 813 is distributed along the circumference of the sealing cylinder 3 between the outer positioning ring 812 and the inner positioning ring 811, and the two ends of the connecting column 813 are fixedly connected to the outer positioning ring 812 and the inner positioning ring 811, respectively.

[0062] The inner positioning ring 811 is placed inside the gas terminal box 2 and is strictly coaxial with the outer positioning ring 812. The inner positioning ring 811 provides a key reference for the positioning of the entire support within the gas terminal box 2, ensuring the accuracy of the subsequent installation of the connecting column 813, thereby maintaining the stability of the overall support structure.

[0063] The two ends of the connecting column 813 are firmly fixedly connected to the outer positioning ring 812 and the inner positioning ring 811 respectively. The connection method adopted is welding, riveting or high-strength bolt connection, so as to strengthen the overall integrity of the support, enable it to withstand certain external impacts and vibrations, stably support the related components, and ensure the reliability of the entire device during operation.

[0064] like Figure 5 As shown, a stop ring 814 is provided on the connecting column 813, an electromagnetic coil 83 is provided on the stop ring 814, and an elastic element is provided between the stop ring 814 and the transmission ring 82.

[0065] The electromagnetic coil 83 is precisely positioned on the stop ring 814, and the connection method between the two conforms to the installation specifications of electromagnetic equipment, ensuring the stability and electrical safety of the electromagnetic coil 83 during operation.

[0066] An elastic element is arranged between the stop ring 814 and the transmission ring 82. In the initial state, the elastic element maintains the relative position between the stop ring 814 and the transmission ring 82 by its own elastic force. When the transmission ring 82 is driven by the electromagnetic coil 83 to move, the elastic element deforms accordingly and stores elastic potential energy. When the driving ends, the elastic potential energy is released, causing the transmission ring 82 to return to its initial position, ensuring that the entire transmission system can cycle back and forth stably and reliably perform the corresponding actions.

[0067] like Figure 5 As shown, the inner fixing ring 41 is provided with a transmission rod 412 extending circumferentially at one end opposite to the interface. The transmission rod 412 slides through the transmission ring 82 and is provided with a limit ring 413. A transmission elastic element 414 is provided between the transmission ring 82 and the inner fixing ring 41. The arc-shaped groove 7321 is provided with a straight groove 7322 extending axially along the drive cylinder 732 at one end opposite to the interface.

[0068] When the drive ring 82 moves toward the interface, the drive pin 822 slides in the straight groove 7322. Through the transmission elastic element 414, the gas connector 4 can move toward the connector until the drive pin 822 moves in the arc groove 7321, at which point the interface is opened to facilitate connection of the gas-using equipment.

[0069] like Figure 5 As shown, the telescopic tube assembly 6 includes a fixed tube 61 and a sliding tube 62; the fixed tube 61 is connected to the gas supply tube assembly, and an outer stepped groove is provided on the inner wall of the fixed tube 61 facing the interface; the sliding tube 62 is slidably sealed with the fixed ring, and the sliding tube 62 is connected to the gas connector 4. An inner stepped groove is provided on the outer wall of the sliding tube 62 away from the interface, and a reset elastic element 63 is provided between the inner stepped groove and the outer stepped groove. A retaining ring 64 is provided on the outer wall of the sliding tube 62, and the fixed tube 61 abuts against the retaining ring 64.

[0070] The fixed pipe 61 serves as the foundation of the telescopic pipe assembly 6, establishing a stable connection with the gas supply pipe assembly to ensure that gas can be smoothly and unobstructedly transmitted from the gas supply line to subsequent components. An external stepped groove is machined on the inner wall of the fixed pipe 61 near the interface.

[0071] The sliding tube 62 achieves a sliding seal with the fixed tube 61. One end of the sliding tube 62 is securely connected to the gas connector 4, ensuring that the two work in unison during movement. An inner stepped groove is intentionally provided on the outer wall of the sliding tube 62, away from the interface. This inner stepped groove corresponds to the outer stepped groove of the fixed tube 61, and together they provide a precise installation position for the reset elastic element 63. The reset elastic element 63 is positioned between the inner and outer stepped grooves. It is made of a material with suitable elastic properties and is designed and manufactured according to the system's mechanical characteristics and motion requirements. Under normal conditions, it provides a preload force in a specific direction to the sliding tube 62, maintaining the initial state of the entire telescopic tube assembly 6.

[0072] In addition, a retaining ring 64 is provided on the outer wall of the sliding tube 62. The fixed tube 61 abuts against the retaining ring 64. The retaining ring 64 not only provides a clear limit for the fixed tube 61, but also works with the reset elastic element 63 to jointly control the sliding range of the sliding tube 62 relative to the fixed tube 61, ensuring that the telescopic tube assembly 6 can extend and retract flexibly during operation, while maintaining a stable connection state, thus ensuring the continuity and stability of the gas delivery process.

[0073] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A dustproof suspension device for medical gas terminal, characterized by, Includes a suspended extension arm (1) connected to the ceiling and a gas terminal box (2) connected to the end of the suspended extension arm (1); The gas terminal box (2) has a rectangular array of interfaces. The gas terminal box (2) is equipped with a gas supply pipeline and a gas connector (4) connected to the gas supply pipeline. A sealing cylinder (3) coaxial with the interface is provided on the inner side of the interface. The gas connector (4) extends into the sealing cylinder (3). A one-way ventilation component (5) is provided between the outer surface of the gas connector (4) and the inner wall of the sealing cylinder (3). A telescopic pipe assembly (6) is provided between the end of the gas connector (4) facing away from the interface and the gas supply pipeline; A sealing assembly (7) is provided at the interface, and a driving assembly (8) is provided on the outside of the sealing cylinder (3) for guiding the gas connector (4) to move toward the interface and driving the sealing assembly (7) to open the interface; A clean chamber (31) with dynamically changing volume as the gas connector (4) moves is formed between the side of the gas connector (4) away from the interface and the inner wall of the sealing cylinder (3). A pre-cavity (32) is formed between the side of the gas connector (4) facing the interface and the interface. An air inlet communicating with the inner cavity of the gas terminal box (2) is provided on the clean chamber (31), and a filter block (33) is provided at the air inlet.

2. The medical gas terminal dustproof suspension device according to claim 1, characterized in that, The sealing cylinder (3) is provided with an outer fixing ring (34) at one end away from the interface. The air inlet is distributed circumferentially on the outer fixing ring (34). The inner circumference of the outer fixing ring (34) is provided with an outer fixing cylinder (341) that is coaxial with it and extends toward the interface. The filter block (33) is provided at one end of the outer fixing ring (34) toward the interface. An inner fixing ring (41) coaxial with the gas connector (4) is provided on its circumferential surface. An inner fixing cylinder (411) coaxial with the inner fixing ring (41) and extending in a direction away from the interface is provided on the inner fixing ring (41). The inner fixing cylinder (411) and the outer fixing cylinder (341) are sealed and slidingly fitted. The clean cavity (31) is formed between the outer wall of the inner fixing cylinder (411) and the inner wall of the sealing cylinder (3). The inner fixing ring (41) is connected to the drive assembly (8) for transmission.

3. The medical gas terminal dustproof suspension device according to claim 2, characterized in that, The one-way ventilation assembly (5) includes a connecting tube (51), a fixed plug ring (52), a sliding plug ring (53), and a ventilation elastic element (54); The connecting cylinder (51) is coaxially disposed on the outer wall of the gas connector (4). A positioning plug ring (511) is provided on the end of the connecting cylinder (51) facing the interface, and the outer diameter of the positioning plug ring (511) is smaller than the inner diameter of the sealing cylinder (3). The fixing plug ring (52) is coaxially and fixedly disposed on the outer wall of the connecting cylinder (51). The fixing plug ring (52) has a fixing inclined surface at one end facing the interface, and the outer wall of the fixing plug ring (52) has fixing plug grooves (521) distributed along its circumference. The sliding plug ring (53) is coaxially and slidably disposed on the outer wall of the connecting cylinder (51). The outer wall of the sliding plug ring (53) is in a sealing sliding fit with the inner wall of the sealing cylinder (3). The sliding plug ring (53) is located between the positioning plug ring (511) and the fixed plug ring (52). The end of the sliding plug ring (53) away from the interface is provided with a sliding inclined surface that can be fitted with the fixed inclined surface. When the sliding plug ring (53) is away from the fixed plug ring (52), an air passage is formed between the fixed inclined surface and the sliding inclined surface. The inner wall of the sliding plug ring (53) is provided with a sliding air groove (531) distributed along its circumference. The outer wall of the sliding plug ring (53) is in a sealing sliding fit with the inner wall of the sealing cylinder (3). The ventilated elastic element (54) is disposed between the sliding plug ring (53) and the positioning plug ring (511).

4. The medical gas terminal dustproof suspension device according to claim 3, characterized in that, The outer wall of the sliding plug ring (53) is provided with a sleeve groove coaxial with it, and a sealing ring (55) coaxial with it is provided in the sleeve groove. The sealing ring (55) is interference-fitted with the inner wall of the sealing cylinder (3).

5. The medical gas terminal dust-preventing suspension device according to claim 2, wherein The plugging assembly (7) includes a plugging ring (71), a plugging blade (72), and a drive ring (73); The sealing ring (71) is coaxially disposed in the interface; The sealing blades (72) are distributed circumferentially along the sealing ring (71) at one end of the sealing ring (71). A fixed shaft (721) and a drive shaft (722) are provided on the outer side of the sealing blades (72) away from the axis of the sealing ring (71). The fixed shaft (721) is rotatably disposed in the sealing ring (71). The drive ring (73) is rotatably disposed on one side of the sealing ring (71) on the same axis. The drive ring (73) is provided with drive grooves (731) distributed along its circumference. The drive grooves (731) extend in a direction that deviates from the radial direction of the drive ring (73). The drive shaft (722) extends into the drive grooves (731) and slides with them. The end of the drive ring (73) opposite to the interface is provided with a drive cylinder (732) coaxial with it. The drive cylinder (732) is connected to the drive assembly (8) in a transmission connection.

6. The medical gas terminal dust-preventing suspension device according to claim 5, wherein The drive assembly (8) includes a bracket, a drive ring (82), an electromagnetic coil (83), and a return elastic element (84); The bracket is located inside the interface; The transmission ring (82) is slidably mounted on the bracket and coaxial with the interface. One end of the transmission ring (82) facing the interface is provided with a transmission plate (821) distributed circumferentially thereon. The transmission plate (821) is provided with a drive pin (822) extending radially thereon. The electromagnetic coil (83) is mounted in the bracket and faces the transmission ring (82); The drive cylinder (732) is provided with an arc-shaped groove (7321) distributed along its circumference, and the drive pin (822) extends into the arc-shaped groove (7321) and slides in cooperation with it; The return elastic element (84) is disposed in the bracket and abuts against the transmission ring (82).

7. The medical gas terminal dust-preventing suspension device according to claim 6, wherein The outer wall of the sealing ring (71) is provided with a sealing cylinder (711) extending into the gas terminal box (2), and the support includes an inner positioning ring (811), an outer positioning ring (812) and a connecting column (813); The outer positioning ring (812) is coaxially and fixedly connected to the sealing cylinder (711); The inner positioning ring (811) is located inside the gas terminal box (2) and is coaxial with the outer positioning ring (812); The connecting column (813) is distributed circumferentially between the outer positioning ring (812) and the inner positioning ring (811) along the sealing cylinder (3), and the two ends of the connecting column (813) are fixedly connected to the outer positioning ring (812) and the inner positioning ring (811) respectively.

8. The medical gas terminal dust-preventing suspension device according to claim 7, wherein A stop ring (814) is provided on the connecting column (813), an electromagnetic coil (83) is provided on the stop ring (814), and an elastic element is provided between the stop ring (814) and the transmission ring (82).

9. The medical gas terminal dustproof suspension device according to claim 6 or 7 or 8, characterized in that, The inner fixing ring (41) is provided with a transmission rod (412) extending circumferentially at one end away from the interface. The transmission rod (412) slides through the transmission ring (82) and is provided with a limit ring (413). A transmission elastic element (414) is provided between the transmission ring (82) and the inner fixing ring (41). The arc groove (7321) is provided with a straight groove (7322) extending axially along the drive cylinder (732) at one end away from the interface.

10. The medical gas terminal dust-preventing suspension device according to any one of claims 1 to 8, wherein The telescopic tube assembly (6) includes a fixed tube (61) and a sliding tube (62); The fixed pipe (61) is connected to the gas supply pipe group, and an outer stepped groove is provided on the inner wall of the fixed pipe (61) facing the interface. The sliding tube (62) is slidably sealed with the fixed ring. The sliding tube (62) is connected to the gas connector (4). The outer wall of the sliding tube (62) is provided with an inner stepped groove at the end away from the interface. A reset elastic element (63) is provided between the inner stepped groove and the outer stepped groove. A retaining ring (64) is provided on the outer wall of the sliding tube (62). The fixed tube (61) abuts against the retaining ring (64).

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