Automatic filling device for producing medical high-purity gas

Abstract

The invention belongs to the technical field of gas filling, and particularly relates to an automatic filling device for medical high-purity gas production, which comprises a three-axis movable frame, a mounting part, a filling mechanism, a protection mechanism, a recovery mechanism, a filtering mechanism and a capturing mechanism, the mounting part comprises a mounting box and a water tank mounted at the bottom of the mounting box, and the mounting box is controlled to move through a three-axis movable frame; the filling mechanism comprises a connecting nozzle and a conveying pipe connected with an external air source, and the connecting nozzle is communicated with an inner cavity of the conveying pipe; the protection mechanism comprises a nozzle and a control pump, and the control pump pumps liquid in the water tank and discharges the liquid to the joint of the connecting nozzle and the gas tank through the nozzle. The recycling mechanism comprises a collecting hopper and a connecting pipe, and the collecting hopper is located under the connecting nozzle; through cooperation of the structure, water flow continuously absorbs low-temperature heat, frosting blockage caused by sudden temperature drop inside and outside the mouthpiece can be prevented, static electricity can be conducted away through the electric conduction characteristic of the water film, and the hidden danger of burning explosion of combustible gas is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of gas filling, in particular to an automatic filling device for producing medical high-purity gas. Background Art

[0002] Medical high-purity gases are important materials to ensure the normal operation of clinical treatment and medical equipment. Common gases include oxygen, nitrogen, carbon dioxide, argon, etc. These high-purity gases must be filled before they can be stored in gas cylinders at appropriate pressure and capacity to meet usage needs. In the existing production and filling process of medical high-purity gases, the filling process is generally started by manually aligning and connecting the gas source and high-purity gas storage tanks one by one. This manual operation method is not only inefficient and difficult to meet the needs of large-scale production, but also requires a high level of operator proficiency. There is a risk of gas leakage or insufficient filling due to connection deviation. At the same time, during the filling process, since high-purity gases have higher internal energy under high-pressure storage conditions, throttling and expansion will occur when high-pressure gases pass through valves, nozzles or narrow interfaces. For most high-purity medical gases (such as oxygen, nitrogen, argon, etc.), throttling at room temperature will cause the temperature to drop, the gas pressure to drop sharply, and the internal energy to be converted into molecular kinetic energy, resulting in a significant drop in local temperature and even frosting.

[0003] A sudden drop in temperature can cause the nozzle and connector materials to shrink and deform, destroying the tightness of the sealing structure and leading to gas leakage. This not only wastes high-purity gas but may also pose a safety hazard. On the other hand, excessively low temperatures make the nozzle surface temperature extremely low. Operators may easily get frostbite if they accidentally touch it during connection or inspection operations.

[0004] To this end, the present invention provides an automatic filling device for producing medical high-purity gas. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the automatic filling device for producing medical high-purity gas comprises a three-axis movable frame, a mounting portion, a filling mechanism, a protection mechanism, a recovery mechanism, a filtering mechanism and a capturing mechanism; The installation part includes an installation box and a water tank installed at the bottom of the installation box, and the movement of the installation box is controlled by a three-axis movable frame; The filling mechanism includes a connecting nozzle and a delivery pipe connected to an external gas source, and the connecting nozzle and the inner cavity of the delivery pipe are communicated with each other; The protection mechanism includes a nozzle and a control pump, the control pump draws liquid from the water tank and discharges it through the nozzle to the connection between the connecting nozzle and the gas tank; The recovery mechanism includes a collecting hopper and a connecting pipe. The collecting hopper is located directly below the connecting nozzle, and one end is fixedly connected to the outer wall of the installation box. The collecting hopper is connected to the water tank through the connecting pipe. The filter mechanism is used to filter the liquid entering the control pump; The capture mechanism is used to capture solid impurities in the liquid inside the water tank.

[0007] Preferably, a control motor is fixedly mounted on the outer wall of the installation box, and an output shaft of the control motor extends into the inner cavity of the installation box and is fixedly connected to the outer wall of the connecting nozzle; An adapter ring is rotatably mounted on the outer wall of the connecting nozzle through a sealing bearing, and one end of the delivery pipe is fixedly connected to the outer wall of the adapter ring.

[0008] Preferably, the filtering mechanism comprises a mounting cylinder, a filter plate and a liquid inlet; The mounting cylinder is fixedly installed on the inner wall of the water tank, the filter plate is fixedly installed on the inner wall of the mounting cylinder, the liquid inlet is opened on the outer wall of the mounting cylinder, and multiple liquid inlets are evenly arranged in a ring shape along the axis of the mounting cylinder. One side of the mounting cylinder is connected to the input end of the control pump through a conduit.

[0009] Preferably, the capture mechanism includes an axial flow impeller, an elastic sheet, a storage cylinder and a one-way diaphragm; The axial flow impeller is rotatably mounted on the inner wall of the mounting cylinder and is located on the side of the filter plate away from the liquid inlet; One side of the elastic sheet is fixedly connected to the inner wall of the mounting cylinder and is used to unidirectionally close the liquid inlet; The storage cylinder is slidably plugged into the inner wall of the installation cylinder, and the axis thereof coincides with the axis of the installation cylinder. The one-way diaphragm is fixedly installed in the inner cavity of the storage cylinder.

[0010] Preferably, a mounting disc is detachably mounted on the outer wall of the water tank, a mounting plate is elastically mounted on the axial end of the mounting disc, a support frame for supporting the storage cylinder is fixedly mounted on the outer wall of the mounting plate, and a sealing ring for sealingly fitting with the inner cavity of the mounting cylinder is fixedly mounted on the outer wall of the support frame.

[0011] Preferably, the drive motor is fixedly installed on the outer wall of the water tank, the output shaft of the drive motor extends to the inner cavity of the water tank and is fixedly installed with a transmission shaft, a sealed bearing is provided at the contact portion between the output shaft of the drive motor and the outer wall of the water tank, the transmission shaft passes through the axial flow impeller and is fixedly connected to the axial flow impeller.

[0012] Preferably, a mounting bracket is fixedly mounted on the inner wall of the mounting cylinder, a mounting sleeve is rotatably mounted on the outer wall of the mounting bracket, a scraping plate is fixedly mounted on the outer wall of the mounting sleeve, and the side wall of the scraping plate is inclined; The axial end of the transmission shaft passes through the filter plate and is connected to the mounting sleeve through a one-way bearing.

[0013] Preferably, a connecting ring is fixedly mounted on the outer wall of the installation tube, and the inner cavity of the connecting ring is communicated with the inner cavity of the installation tube. After the storage tube and the installation tube are plugged in, the connecting ring is located outside the storage tube. A control cylinder is fixedly installed on the inner wall of the water tank, and a connecting pipe is fixedly installed on one axial end of the control cylinder. The connecting pipe has a unidirectional input end and an output end. The output end of the connecting pipe is connected to the connecting ring through a conduit, and a control plug is slidably installed in the inner cavity of the control cylinder.

[0014] Preferably, a threaded sleeve is mounted on the radial outer wall of the transmission shaft via a one-way bearing, a slip ring is connected to the outer wall of the threaded sleeve via a thread, and a guide rod penetrating the slip ring is fixedly mounted on the outer wall of the mounting cylinder; A connecting arm is fixedly installed on the bottom surface of the slip ring, and a connecting rod connected to the control plug is fixedly installed on the outer wall of the connecting arm.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention is provided with a nozzle and a filter plate. During filling, the pump is controlled to draw pure water from the water tank and spray it to the connection part through the nozzle. The water flow continuously absorbs low-temperature heat, which can not only prevent frost and blockage inside and outside the nozzle due to sudden temperature drop, but also conduct static electricity through the conductive properties of the water film, reducing the risk of combustible gas explosion. The filter mechanism intercepts liquid impurities through the installation cylinder and filter plate, and cooperates with the forward and reverse rotation of the axial flow impeller to realize liquid circulation filtration and impurity collection, preventing impurities from becoming ice crystal condensation cores, effectively delaying the freezing rate. The recovery mechanism returns the spray liquid to the water tank for recycling. While reducing the consumption of purified water, the water temperature is maintained by the resistance heating module, ensuring that the spray liquid continues to play its anti-icing, thermal stress buffering and static electricity conduction functions, comprehensively improving the safety of the filling process and the efficiency of liquid use. 2. The present invention sets a three-axis movable frame, which is composed of mutually perpendicular electric slide rails. It can automatically adjust the position of the installation box along the three-dimensional coordinates. In conjunction with the position information collector and the control chip, it automatically completes the alignment, insertion and tight screwing of the connecting nozzle and the gas tank nozzle. Compared with the traditional manual operation mode, it not only greatly improves the docking efficiency, but also avoids manual operation errors through automated control, while keeping workers away from low-temperature areas and reducing the risk of frostbite. In addition, the automated connection process can ensure the consistency of each connection, facilitate the traceability and quality control of the entire production process, and realize the standardization and intelligence of medical high-purity gas filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a schematic diagram of the installation of the water tank in the present invention; Figure 3 It is a schematic diagram of the internal structure of the installation box of the present invention; Figure 4 It is a structural schematic diagram of the connecting nozzle in the present invention; Figure 5 This is a schematic diagram of the installation of the collection bucket in the present invention; Figure 6 This is a schematic diagram of the installation of the installation cylinder in the present invention; Figure 7 It is a schematic diagram of the internal structure of the installation cylinder in the present invention; Figure 8 is a cross-sectional view of the storage cartridge of the present invention; Figure 9 This is a schematic diagram of the installation of the scraper plate in the present invention; Figure 10 It is a schematic diagram of the installation of the threaded sleeve in the present invention; Figure 11 It is a schematic diagram of the installation of the control plug in the present invention.

[0018] In the figure: 1. three-axis movable frame; 2. control motor; 3. mounting box; 4. water tank; 5. connecting nozzle; 6. nozzle; 7. delivery pipe; 8. drive motor; 9. connecting pipe; 10. collecting bucket; 11. control pump; 12. adapter ring; 13. mounting plate; 14. connecting ring; 15. connecting pipe; 16. control cylinder; 17. threaded sleeve; 18. connecting rod; 19. connecting arm; 20. slip ring; 21. liquid inlet; 22. transmission shaft; 23. mounting cylinder; 24. elastic sheet; 25. one-way diaphragm; 26. storage cylinder; 27. sealing ring; 28. support frame; 29. mounting plate; 30. filter plate; 31. mounting frame; 32. axial flow impeller; 33. scraper plate; 34. mounting sleeve; 35. guide rod; 36. control plug. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figures 1 to 11 As shown, the automatic filling device for medical high-purity gas production described in the present invention includes a three-axis movable frame 1, a mounting portion, a filling mechanism, a protection mechanism, a recovery mechanism, a filtering mechanism and a capturing mechanism, wherein the three-axis movable frame 1 is used to connect with the roof support of the filling plant.

[0021] The three-axis movable frame 1 is composed of three mutually perpendicular electric slides, which correspond to the X, Y and Z axes of the three-dimensional coordinates respectively, and are recorded as the X-axis slide, Y-axis slide and Z-axis slide. The X-axis slide is connected to the roof bracket of the factory building, the Y-axis slide is fixedly installed on the slider of the X-axis slide, and the Z-axis slide is fixedly installed on the slider of the Y-axis slide. Among them, the three-axis movable frame 1 has a built-in control chip for controlling the movement of the sliders in the X-axis slide, Y-axis slide and Z-axis slide.

[0022] The installation part includes an installation box 3 and a water tank 4 installed at the bottom of the installation box 3. The movement of the installation box 3 is controlled by a three-axis movable frame 1, wherein the installation box 3 is fixedly connected to the slider of the Z-axis slide rail, and the installation box 3 is controlled by the three-axis movable frame 1 to move forward and backward, left and right, and up and down. The water tank 4 is used to store spray liquid (pure water is used as the spray liquid in this embodiment). A liquid filling port is provided on the outside of the water tank 4, and a resistance heating module (not shown in the figure) is provided on the bottom surface of the water tank 4.

[0023] The filling mechanism includes a connecting nozzle 5 and a delivery pipe 7 connected to an external gas source. The inner cavities of the connecting nozzle 5 and the delivery pipe 7 are communicated with each other. The connecting nozzle 5 is rotatably set in the installation box 3, and one end extends to the outside of the installation box 3. The end located outside the installation box 3 is provided with an external thread.

[0024] A position information collector is provided on the outside of the installation box 3. During filling, the wooden pallet with the gas cylinder is moved to the bottom of the three-axis movable frame 1. The movement of the installation box 3 is controlled by the three-axis movable frame 1 (coordinated by the information collector and the control chip) until the connecting nozzle 5 and the nozzle of the gas cylinder are aligned. The connecting nozzle 5 is then controlled to be inserted into the nozzle of the gas cylinder. The connecting nozzle 5 is then rotated until the connecting nozzle 5 and the nozzle of the gas cylinder are tightly connected. At this time, the delivery control valve of the gas source is opened to deliver high-purity medical gas to the inside of the gas cylinder. After filling, the connecting nozzle 5 is controlled to rotate in the opposite direction to achieve separation, and the installation box 3 is reset by the three-axis movable frame 1.

[0025] Compared with the existing manual operation, the connection nozzle 5 and the gas tank nozzle can be precisely controlled to be aligned, inserted and tightly connected, which not only improves the operating efficiency and accuracy, but also reduces labor intensity and safety hazards such as gas leakage (such as the risk of frostbite caused by workers accidentally touching the low-temperature area) through automatic positioning and airtightness control. At the same time, it ensures the consistency of connection quality and realizes full-process automated production and data traceability.

[0026] The protective mechanism includes a nozzle 6 and a control pump 11. The control pump 11 extracts the liquid in the water tank 4 and discharges it through the nozzle 6 to the connection between the connecting nozzle 5 and the gas tank. The control pump 11 is a micro water pump installed inside the installation box 3. The nozzle 6 is installed on the outer wall of the installation box 3, and the end is bent toward the connecting nozzle 5.

[0027] During filling, the pump 11 is controlled to extract the spray liquid in the water tank 4 and spray it toward the connecting nozzle 5 and the gas tank nozzle. When filling medical high-purity gas, the spray liquid is sprayed on the gas tank nozzle, and the spray liquid flows on the outer wall of the connecting nozzle 5 and the gas tank nozzle, continuously absorbing cold energy, preventing frost from forming embolism inside the connecting nozzle 5 and the gas tank nozzle, and preventing frost on the outer wall of the pipeline to avoid accidental frostbite. At the same time, it can relieve the thermal stress of the metal nozzle caused by sudden temperature changes, prevent the seal from shrinking and failing, and avoid the risk of low-temperature embrittlement. In addition, it can also form a conductive water film to conduct away static electricity, reduce the explosion risk of flammable gases (such as medical acetylene), and ensure the safety and stability of the filling process and the compliance of the gas quality with medical standards.

[0028] The recovery mechanism includes a collecting hopper 10 and a connecting pipe 9. The collecting hopper 10 is located directly below the connecting nozzle 5, and one end is fixedly connected to the outer wall of the installation box 3. During filling, the connecting nozzle 5 is located between the nozzle 6 and the collecting hopper 10, and the spray liquid falling from the outer wall of the connecting nozzle 5 falls into the collecting hopper 10 to be collected.

[0029] The collecting hopper 10 is connected to the water tank 4 through the connecting pipe 9, so as to replenish the spraying liquid in the water tank 4. The filtering mechanism is used to filter the liquid entering the control pump 11 to achieve recycling and reduce the cost of use. At the same time, it prevents the spraying liquid from splashing and improves the safety of use.

[0030] The capture mechanism is used to capture solid impurities in the liquid inside the water tank 4 to prevent the impurities from contaminating the control pump 11 and maintain the spraying quality.

[0031] A control motor 2 is fixedly installed on the outer wall of the installation box 3. The control motor 2 is a common servo motor. The output shaft of the control motor 2 extends to the inner cavity of the installation box 3 and is fixedly connected to the outer wall of the connecting nozzle 5. After the connecting nozzle 5 and the gas tank nozzle are aligned, the connecting nozzle 5 is controlled to rotate by the control motor 2, thereby realizing the connection between the gas source and the gas tank.

[0032] An adapter ring 12 is rotatably mounted on the outer wall of the connecting nozzle 5 via a sealed bearing, and one end of the delivery pipe 7 is fixedly connected to the outer wall of the adapter ring 12, thereby maintaining the connection between the connecting nozzle 5 and the delivery pipe 7 during the rotation of the connecting nozzle 5.

[0033] As a preferred embodiment of the present invention, the filtering mechanism includes a mounting cylinder 23, a filter plate 30 and a liquid inlet 21. The mounting cylinder 23 is fixedly mounted on the inner wall of the water tank 4, and the filter plate 30 is fixedly mounted on the inner wall of the mounting cylinder 23. The filter plate 30 is used to intercept impurities in the spray liquid during the process of the spray liquid passing through the mounting cylinder 23.

[0034] The liquid inlet 21 is opened on the outer wall of the mounting cylinder 23. There are multiple liquid inlets 21 evenly arranged in a ring shape along the axis of the mounting cylinder 23. One side of the mounting cylinder 23 is connected to the input end of the control pump 11 through a conduit. When the control pump 11 is working, the liquid in the water tank 4 enters the interior of the mounting cylinder 23 through the liquid inlet 21 and is finally pumped out by the control pump 11.

[0035] The capture mechanism includes an axial flow impeller 32, an elastic sheet 24, a storage cylinder 26 and a one-way diaphragm 25. The axial flow impeller 32 is rotatably mounted on the inner wall of the mounting cylinder 23 and is located on the side of the filter plate 30 away from the liquid inlet 21. The rotation of the axial flow impeller 32 controls the flow of liquid inside the mounting cylinder 23.

[0036] One side of the elastic sheet 24 is fixedly connected to the inner wall of the mounting tube 23 and is used to unidirectionally close the liquid inlet 21. The elastic sheet 24 is a common rubber sheet. When the liquid in the water tank 4 enters the inner cavity of the mounting tube 23 through the liquid inlet 21, the elastic sheet 24 separates from the inner wall of the mounting tube 23, and the liquid enters. When the mounting tube 23 wants to discharge the liquid through the liquid inlet 21, the elastic sheet 24 fits tightly with the inner wall of the mounting tube 23 to achieve unidirectional sealing of the liquid inlet 21.

[0037] The storage tube 26 is slidably inserted into the inner wall of the mounting tube 23, and its axis coincides with the axis of the mounting tube 23. The one-way diaphragm 25 is made of silicone material, simulating a heart valve to achieve conduction of the inner cavity of the storage tube 26. It is fixedly installed in the inner cavity of the storage tube 26. The storage tube 26 is made of sponge material, and a mesh plate is provided at one end of the mounting tube 23 away from the mounting tube 23.

[0038] When the control pump 11 is working, the axial flow impeller 32 is controlled to rotate forward at the same time (at this time, the direction in which the axial flow impeller 32 transports liquid is to extract liquid from the liquid inlet 21). After the liquid enters the inner cavity of the mounting cylinder 23 and is filtered through the filter plate 30, the control pump 11 extracts the filtered liquid and then discharges it.

[0039] After the control pump 11 stops working, the control axial flow impeller 32 continues to rotate forward, and the liquid inside the water tank 4 is extracted through the liquid inlet 21. At this time, the liquid in the water tank 4 and the inner cavity of the mounting cylinder 23 circulates until the liquid in the water tank 4 is completely filtered, that is, the impurities in the water tank 4 are completely intercepted by the filter plate 30 in the inner cavity of the mounting cylinder 23.

[0040] Finally, after complete interception (at this time, there are no impurities in the liquid in the water tank 4), the axial flow impeller 32 is controlled to rotate in the opposite direction. At this time, liquid is extracted through one end of the mounting cylinder 23 (at this time, the liquid inlet 21 is closed), and the filtered liquid passes through the filter plate 30 and flows toward the storage cylinder 26. The impurities intercepted inside the mounting cylinder 23 are collected by the storage cylinder 26 for reuse. At the same time, the backflushing filter plate 30 can realize the backflushing cleaning of the filter plate 30, thereby improving the filtration quality for reuse. Impurities are the core of ice crystal condensation, and the filtered pure liquid lacks such condensation cores, which increases the supercooling threshold required for freezing, slows down the freezing speed, and further improves the filling quality.

[0041] The one-way diaphragm 25 is provided to prevent impurities inside the storage cylinder 26 from entering the liquid again when the axial flow impeller 32 rotates in the reverse direction.

[0042] As a preferred embodiment of the present invention, a mounting plate 13 is detachably mounted on the outer wall of the water tank 4 , and the mounting plate 13 is connected to the outer wall of the water tank 4 through internal and external threads, and a sealing ring is provided at the connection position.

[0043] A mounting plate 29 is elastically mounted on the axial end of the mounting disk 13. A support frame 28 for supporting the storage cylinder 26 is fixedly mounted on the outer wall of the mounting plate 29. The support frame 28 passes through the storage cylinder 26 and serves as the skeleton of the storage cylinder 26 to prevent the storage cylinder 26 from deformation as much as possible.

[0044] A sealing ring 27 is fixedly mounted on the outer wall of the support frame 28 for sealingly fitting with the inner cavity of the mounting tube 23 . During installation, the sealing ring 27 is inserted into the mounting tube 23 , and then the mounting plate 13 is rotated until the mounting plate 13 is fixed to the water tank 4 .

[0045] When the axial flow impeller 32 rotates in the forward direction, the sealing ring 27 continues to slide toward the inside of the mounting cylinder 23 due to the pressure difference until the mounting plate 29 and one axial end of the mounting cylinder 23 are in contact, thereby sealing the axial end of the mounting cylinder 23. The advantage of this arrangement is to prevent the liquid from entering the inner cavity of the mounting cylinder 23 through the storage cylinder 26 when the control pump 11 extracts the liquid, thereby preventing impurities from adhering to the outside of the storage cylinder 26.

[0046] When the axial flow impeller 32 rotates in the opposite direction, the water flow pushes the sealing ring 27 to slide until the mounting plate 29 is again in contact with the mounting disk 13. At this time, one side of the storage cylinder 26 is exposed to facilitate the passage of liquid. During this process, impurities are collected in the inner cavity of the storage cylinder 26.

[0047] The outer wall of the water tank 4 is fixedly installed with a drive motor 8, which is a common servo motor. The output shaft of the drive motor 8 extends to the inner cavity of the water tank 4 and is fixedly installed with a transmission shaft 22. The rotation of the transmission shaft 22 is controlled by the drive motor 8.

[0048] A sealed bearing is provided at the contact portion between the output shaft of the driving motor 8 and the outer wall of the water tank 4. The transmission shaft 22 passes through the axial flow impeller 32 and is fixedly connected to the axial flow impeller 32. When the output shaft of the driving motor 8 rotates, the axial flow impeller 32 is driven to rotate, thereby controlling the flow of liquid in the inner cavity of the mounting cylinder 23.

[0049] A mounting bracket 31 is fixedly mounted on the inner wall of the mounting tube 23 , and a mounting sleeve 34 is rotatably mounted on the outer wall of the mounting bracket 31 . The mounting bracket 31 provides installation and support for the mounting sleeve 34 .

[0050] A scraping plate 33 is fixedly mounted on the outer wall of the mounting sleeve 34 , and the side wall of the scraping plate 33 is tilted. When the filter plate 30 is in contact with the surface of the scraping plate 33 , the scraping plate 33 is rotated to clean the surface of the filter plate 30 .

[0051] The axial end of the drive shaft 22 passes through the filter plate 30 and is connected to the mounting sleeve 34 through a one-way bearing. When the drive shaft 22 drives the axial flow impeller 32 to rotate forward, the filter plate 30 protrudes toward the direction of water flow. At this time, the filter plate 30 and the scraper plate 33 are separated, increasing the filtering area of the filter plate 30. At the same time, when the drive shaft 22 rotates forward, the mounting sleeve 34 remains fixed.

[0052] When the transmission shaft 22 drives the axial flow impeller 32 to rotate in the opposite direction, the filter plate 30 protrudes toward the scraper plate 33. At this time, the filter plate 30 and the scraper plate 33 are tightly fitted. At this time, the transmission shaft 22 drives the mounting sleeve 34 and the scraper plate 33 to rotate to clean the filter plate 30. Combined with the backflushing cleaning of the filter plate 30 at this time, the cleaning effect of the filter plate 30 is further improved, ensuring the filtering quality for reuse.

[0053] As a preferred embodiment of the present invention, a connecting ring 14 is fixedly mounted on the outer wall of the mounting tube 23 , the inner cavity of the connecting ring 14 is communicated with the inner cavity of the mounting tube 23 , and a through hole communicating with the connecting ring 14 is opened on the outer wall of the mounting tube 23 .

[0054] After the storage cylinder 26 is plugged into the mounting cylinder 23, the connecting ring 14 is located outside the storage cylinder 26. When the axial flow impeller 32 rotates in the opposite direction, liquid is injected into the connecting ring 14. The liquid passes through the radial outer wall of the storage cylinder 26 and enters the interior of the storage cylinder 26, thereby realizing backflushing cleaning of the radial outer wall of the storage cylinder 26 and maintaining the permeability of the storage cylinder 26.

[0055] A control cylinder 16 is fixedly installed on the inner wall of the water tank 4, and a connecting pipe 15 is fixedly installed on one axial end of the control cylinder 16. The connecting pipe 15 has a one-way conducting input end and an output end. A one-way valve is provided in the input end and the output end of the connecting pipe 15, and the conducting directions are opposite.

[0056] The output end of the connecting tube 15 is connected to the connecting ring 14 through a conduit, and a control plug 36 is slidably installed in the inner cavity of the control cylinder 16. During the reciprocating sliding of the control plug 36, the liquid in the water tank 4 enters the interior of the control cylinder 16 through the input end of the connecting tube 15, and is then discharged to the connecting ring 14 from the output end, thereby realizing backflushing cleaning of the radial outer wall of the storage cylinder 26.

[0057] A threaded sleeve 17 is installed on the radial outer wall of the transmission shaft 22 through a one-way bearing. When the transmission shaft 22 rotates in the reverse direction, the threaded sleeve 17 is driven to rotate. When the transmission shaft 22 rotates in the forward direction, the threaded sleeve 17 is fixed. The thread of the threaded sleeve 17 is set on the outside and is a reciprocating thread.

[0058] The outer wall of the threaded sleeve 17 is connected to the slip ring 20 through a thread. The outer wall of the mounting tube 23 is fixedly mounted with a guide rod 35 that passes through the slip ring 20. When the threaded sleeve 17 is rotated, the slip ring 20 is driven to slide back and forth.

[0059] A connecting arm 19 is fixedly mounted on the bottom surface of the slip ring 20, and a connecting rod 18 connected to the control plug 36 is fixedly mounted on the outer wall of the connecting arm 19. When the transmission shaft 22 rotates in the opposite direction, the threaded sleeve 17 is driven to rotate, and the slip ring 20 slides back and forth. At this time, the control plug 36 is driven to slide back and forth through the connecting rod 18, thereby realizing backflushing cleaning of the storage cylinder 26.

[0060] In this embodiment, during the process of the scraping plate 33 scraping and cleaning the filter plate 30, the rotation of the scraping plate 33 affects the local permeability of the filter plate 30, thereby affecting the pressure of the water flow inside the mounting cylinder 23 on the storage cylinder 26. At this time, the elastic force between the mounting plate 29 and the mounting disk 13 changes, causing the storage cylinder 26 to slide back and forth along the inner cavity of the mounting cylinder 23. At this time, the area of the radial outer wall of the storage cylinder 26 that is affected by the backwash is adjusted, thereby achieving the effect of increasing the backwash cleaning area of the radial outer wall of the storage cylinder 26.

[0061] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0063] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic filling device for producing medical high-purity gas, characterized by: It includes a three-axis movable frame (1), a mounting portion, a filling mechanism, a protection mechanism, a recovery mechanism, a filtering mechanism, and a capturing mechanism; The installation portion comprises an installation box (3) and a water tank (4) installed at the bottom of the installation box (3), and the movement of the installation box (3) is controlled by the three-axis movable frame (1); The filling mechanism comprises a connecting nozzle (5) and a delivery pipe (7) connected to an external gas source, wherein the inner cavities of the connecting nozzle (5) and the delivery pipe (7) are in communication with each other; The protection mechanism comprises a nozzle (6) and a control pump (11), wherein the control pump (11) extracts liquid from the water tank (4) and discharges the liquid through the nozzle (6) to the connection point between the connecting nozzle (5) and the gas tank; The recycling mechanism comprises a collecting hopper (10) and a connecting pipe (9); the collecting hopper (10) is located directly below the connecting nozzle (5), and one end of the collecting hopper is fixedly connected to the outer wall of the installation box (3); the collecting hopper (10) is connected to the water tank (4) via the connecting pipe (9); The filtering mechanism is used to filter the liquid entering the control pump (11); The capturing mechanism is used to capture solid impurities in the liquid inside the water tank (4).

2. The automatic filling device for producing medical high-purity gas according to claim 1, characterized in that: A control motor (2) is fixedly mounted on the outer wall of the installation box (3); an output shaft of the control motor (2) extends into the inner cavity of the installation box (3) and is fixedly connected to the outer wall of the connecting nozzle (5); An adapter ring (12) is rotatably mounted on the outer wall of the connecting nozzle (5) via a sealed bearing, and one end of the delivery pipe (7) is fixedly connected to the outer wall of the adapter ring (12).

3. The automatic filling device for producing medical high-purity gas according to claim 1, characterized in that: The filtering mechanism comprises a mounting cylinder (23), a filter plate (30) and a liquid inlet (21); The mounting cylinder (23) is fixedly mounted on the inner wall of the water tank (4), the filter plate (30) is fixedly mounted on the inner wall of the mounting cylinder (23), the liquid inlet (21) is opened on the outer wall of the mounting cylinder (23), and a plurality of the liquid inlets (21) are evenly arranged in a ring shape along the axis of the mounting cylinder (23). One side of the mounting cylinder (23) is connected to the input end of the control pump (11) through a conduit.

4. The automatic filling device for producing medical high-purity gas according to claim 3, characterized in that: The capture mechanism includes an axial flow impeller (32), an elastic sheet (24), a storage cylinder (26), and a one-way diaphragm (25); The axial flow impeller (32) is rotatably mounted on the inner wall of the mounting cylinder (23) and is located on a side of the filter plate (30) away from the liquid inlet (21); One side of the elastic sheet (24) is fixedly connected to the inner wall of the mounting cylinder (23) and is used to unidirectionally close the liquid inlet (21); The storage cylinder (26) is slidably inserted into the inner wall of the installation cylinder (23), and its axis coincides with the axis of the installation cylinder (23). The one-way diaphragm (25) is fixedly installed in the inner cavity of the storage cylinder (26).

5. The automatic filling device for producing medical high-purity gas according to claim 4, characterized in that: The outer wall of the water tank (4) is detachably mounted with a mounting disc (13), an axial end of the mounting disc (13) is elastically mounted with a mounting plate (29), an outer wall of the mounting plate (29) is fixedly mounted with a support frame (28) for supporting the storage cylinder (26), and an outer wall of the support frame (28) is fixedly mounted with a sealing ring (27) for sealingly fitting with the inner cavity of the mounting cylinder (23).

6. The automatic filling device for producing medical high-purity gas according to claim 5, characterized in that: A drive motor (8) is fixedly mounted on the outer wall of the water tank (4); an output shaft of the drive motor (8) extends into the inner cavity of the water tank (4) and is fixedly mounted with a transmission shaft (22); a sealed bearing is provided at a contact portion between the output shaft of the drive motor (8) and the outer wall of the water tank (4); and the transmission shaft (22) passes through the axial flow impeller (32) and is fixedly connected to the axial flow impeller (32).

7. The automatic filling device for producing medical high-purity gas according to claim 6, characterized in that: A mounting frame (31) is fixedly mounted on the inner wall of the mounting cylinder (23); a mounting sleeve (34) is rotatably mounted on the outer wall of the mounting frame (31); a scraping plate (33) is fixedly mounted on the outer wall of the mounting sleeve (34); and a side wall of the scraping plate (33) is inclined. The axial end of the transmission shaft (22) passes through the filter plate (30) and is connected to the mounting sleeve (34) via a one-way bearing.

8. The automatic filling device for producing medical high-purity gas according to claim 7, characterized in that: A connecting ring (14) is fixedly mounted on the outer wall of the installation cylinder (23); the inner cavity of the connecting ring (14) is in communication with the inner cavity of the installation cylinder (23); and after the storage cylinder (26) and the installation cylinder (23) are plugged in, the connecting ring (14) is located outside the storage cylinder (26); A control cylinder (16) is fixedly mounted on the inner wall of the water tank (4), a connecting pipe (15) is fixedly mounted on one axial end of the control cylinder (16), the connecting pipe (15) having a unidirectional input end and an output end, the output end of the connecting pipe (15) being connected to a connecting ring (14) via a conduit, and a control plug (36) being slidably mounted in the inner cavity of the control cylinder (16).

9. The automatic filling device for producing medical high-purity gas according to claim 8, characterized in that: A threaded sleeve (17) is mounted on the radial outer wall of the transmission shaft (22) via a one-way bearing, a slip ring (20) is connected to the outer wall of the threaded sleeve (17) via a thread, and a guide rod (35) penetrating the slip ring (20) is fixedly mounted on the outer wall of the mounting cylinder (23); A connecting arm (19) is fixedly mounted on the bottom surface of the slip ring (20), and a connecting rod (18) connected to the control plug (36) is fixedly mounted on the outer wall of the connecting arm (19).

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