Multi-tube vaporization device for EO sterilization

Abstract

The utility model belongs to the technical field of EO sterilization devices, in particular to a multi-pipe type vaporization device for EO sterilization, which comprises a multi-pipe type vaporization device main body, an outer shell, a heating inner container and a vaporization mechanism, a water inlet pipe and a water outlet pipe are fixed on the heating inner container, the vaporization mechanism comprises two connectors, the two connectors are symmetrically arranged, and the two connectors are connected with the outer shell. A plurality of vaporization pipes and at least one buffer pipe are arranged between the two connectors; an injection tube; an output pipe; according to the EO sterilization cabinet, the vaporization device is of a multi-pipe type structure, heat conduction fins are arranged on the vaporization pipes, the heating area is large, the vaporization degree is high, the vaporization efficiency is greatly improved, medicine which is not vaporized in time is temporarily stored in the temporary storage pipe through the arranged temporary storage pipe, the medicine is guided into the EO sterilization cabinet to be used after being vaporized again, and therefore the use effect of the EO sterilization cabinet is improved. The problem that the sterilization efficiency is influenced by insufficient vaporization is avoided, and meanwhile, the vaporization device is also applicable to a large-flow application scene.

Description

Technical Field

[0001] The utility model belongs to the technical field of EO sterilization devices, and particularly relates to a multi-tube vaporization device for EO sterilization. Background Art

[0002] EO sterilization is a sterilization method through ethylene oxide. It is widely used in the field of medical sterilization. The process is as follows: Ethylene oxide is pressed into a high-pressure medicine supply bottle. The medicine supply bottle is connected to a vaporization device and an EO sterilization cabinet in sequence. When the medicine supply bottle supplies medicine, the medicine (ethylene oxide) in the medicine supply bottle enters the EO sterilization cabinet in a gas-liquid mixed state through the vaporization device to sterilize the items in the EO sterilization cabinet. To ensure the EO sterilization effect, the medicine entering the EO sterilization cabinet needs to have a high degree of vaporization (that is, the liquid content or humidity of the medicine needs to be low). The role of the vaporization device is to vaporize the medicine entering the EO sterilization cabinet to meet the requirements of the EO sterilization cabinet for the vaporization degree of the sterilization medicine.

[0003] Currently, in the prior art, to ensure that the vaporization device has a high vaporization effect, a multi-tube vaporization device is usually adopted, that is, multiple vaporization tubes are configured to work together.

[0004] It is retrieved that in the prior art, the Chinese utility model patent with the authorization announcement number of CN218165688U discloses "a multi-tube vaporization device for EO sterilization", which includes a heating inner tank, an input pipe, an output pipe, and multiple vaporization tubes; both the upper end of the input pipe and the lower end of the output pipe extend into the heating inner tank. The lower ends of all vaporization tubes are connected to the upper end of the input pipe, and the upper ends of all vaporization tubes are connected to the lower end of the output pipe; a humidity sensor and a cut-off valve are provided at the upper end of each vaporization tube, and each cut-off valve is connected to the humidity sensor on its corresponding vaporization tube. There are multiple vaporization tubes in the heating inner tank of this vaporization device, and the structure of multiple vaporization tubes can increase the heating area of the medicine and improve the vaporization ability of the sterilization medicine of this vaporization device.

[0005] For the multi-tube vaporization devices in the prior art including the above-mentioned ones, although the heating area is increased to a certain extent through the multi-tube design, and then the vaporization efficiency and degree of the medicine are improved, in actual use, the injection flow rate of the medicine needs to be strictly controlled. Therefore, it is difficult to adapt to large-flow scenarios. When the subsequent EO sterilization cabinet requires a large-flow injection of medicine, the multi-tube vaporization devices in the prior art are very likely to have the problem of low vaporization degree due to untimely vaporization, which affects the EO sterilization efficiency.

[0006] To solve the above problems, a multi-tube vaporization device for EO sterilization is proposed in this application. Utility Model Content

[0007] To solve the above problems existing in the prior art, the present utility model provides a multi-tube vaporization device for EO sterilization, which has the characteristics of convenient use and high sterilization efficiency.

[0008] To achieve the above object, the present utility model provides the following technical solution: A multi-tube vaporization device for EO sterilization, including a multi-tube vaporization device main body, the multi-tube vaporization device main body includes an outer casing, a heating inner liner located inside the outer casing, and a vaporization mechanism provided inside the heating inner liner. A water inlet pipe and a water outlet pipe are fixed on the heating inner liner. The vaporization mechanism includes:

[0009] Connectors, the two connectors are symmetrically arranged, and a plurality of vaporization tubes and at least one buffer tube are provided between the two connectors. A second solenoid valve and a humidity sensor are connected between the vaporization tube and the connector, and between the buffer tube and the connector. Moreover, the medium flow directions of the second solenoid valves connecting the vaporization tubes and the buffer tubes are opposite. A plurality of heat conducting fins are fixed on the outer walls of the vaporization tubes and the buffer tubes at equal intervals in the circumferential direction;

[0010] An injection pipe, the injection pipe is connected to the lower connector, and a first solenoid valve is connected between the injection pipe and the connector;

[0011] An output pipe, the output pipe is connected to the upper connector.

[0012] As a preferred technical solution of the present utility model, the outer casing includes a heat preservation sheath and heat preservation end caps fixed at both ends of the heat preservation sheath. The water inlet pipe and the water outlet pipe penetrate through the heat preservation sheath.

[0013] As a preferred technical solution of the present utility model, the heat preservation end caps are fixed at both ends of the heat preservation sheath by flanges and bolts.

[0014] As a preferred technical solution of the present utility model, the heating inner liner includes a heating sleeve and heating end caps fixed at both ends of the heating sleeve. The injection pipe and the output pipe penetrate through the heat preservation end caps and the heating end caps.

[0015] As a preferred technical solution of the present utility model, the heating end caps are fixed at both ends of the heating sleeve by flanges and bolts.

[0016] As a preferred technical solution of the present utility model, it further includes:

[0017] A support ring, the support ring is fixed on the inner wall of the heat preservation end cap, and the heating sleeve is clamped between the two support rings.

[0018] As a preferred technical solution of the present utility model, the outer wall of the heating end cap abuts against the inner wall of the supporting ring.

[0019] As a preferred technical solution of the present utility model, the inner space between the outer shell and the heating inner tank is a vacuum chamber, and there is heat-insulating filler in the vacuum chamber.

[0020] As a preferred technical solution of the present utility model, the connector includes:

[0021] A drainage tray, on which a plurality of first connection ports are fixed, and the vaporization tube and the buffer tube are connected to the corresponding first connection ports;

[0022] A plug cover, which is fixed on the drainage tray, and a second connection port is fixed on the plug cover, and the output tube and the first solenoid valve are connected to the corresponding second connection ports.

[0023] As a preferred technical solution of the present utility model, the plug cover is fixed on the drainage tray by bolts.

[0024] Compared with the prior art, the beneficial effects of the present utility model are:

[0025] In the present utility model, the vaporization device adopts a multi-tube structure, and there are heat-conducting fins on the vaporization tube, with a high heat-receiving area, a high degree of vaporization, and greatly improved vaporization efficiency. Through the arranged buffer tube, the drugs that are not vaporized in time are temporarily stored in the buffer tube and are introduced into the EO sterilization cabinet for use after re-vaporization, avoiding the problem that insufficient vaporization affects the sterilization efficiency, and at the same time making the vaporization device of the present utility model applicable to large-flow application scenarios.

[0026] Other additional advantages and beneficial effects of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0028] Figure 1 is a schematic structural diagram of the present utility model;

[0029] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0030] Figure 3 is an isometric structural diagram of the vaporization mechanism in the present utility model;

[0031] Figure 4Schematic axonometric structure diagram of the vaporization tube in the present utility model;

[0032] Figure 5 Schematic axonometric structure diagram of the connector in the present utility model;

[0033] Figure 6 Exploded structure diagram of the connector in the present utility model.

[0034] In the figure: 1. Main body of the multi-tube vaporization device; 11. Outer shell; 111. Heat preservation sheath; 112. Heat preservation end cover; 1121. Support ring; 12. Heating inner liner; 121. Heating sleeve; 1211. Water inlet pipe; 1212. Water outlet pipe; 122. Heating end cover; 13. Vaporization mechanism; 131. Vaporization tube; 1311. Heat conduction fins; 132. Buffer tube; 133. Connector; 1331. Drainage tray; 1332. Plug; 1333. First connection port; 1334. Second connection port; 134. Injection pipe; 135. Output pipe; 136. First solenoid valve; 137. Second solenoid valve; 138. Humidity sensor. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] Please refer to Figures 1-6 , the present utility model provides the following technical solutions: A multi-tube vaporization device for EO sterilization, including the main body 1 of the multi-tube vaporization device, the main body 1 of the multi-tube vaporization device includes an outer shell 11, a heating inner liner 12 located inside the outer shell 11, and a vaporization mechanism 13 arranged inside the heating inner liner 12. A water inlet pipe 1211 and a water outlet pipe 1212 are fixed on the heating inner liner 12. The vaporization mechanism 13 includes: a connector 133, an injection pipe 134, and an output pipe 135.

[0037] Furthermore, by Figures 1-5As shown, in this embodiment, the two connectors 133 are symmetrically arranged, and a plurality of vaporization tubes 131 and at least one buffer tube 132 are provided between the two connectors 133. A second solenoid valve 137 and a humidity sensor 138 are connected between the vaporization tube 131 and the connector 133 and between the buffer tube 132 and the connector 133. The medium flow directions of the second solenoid valves 137 connecting the vaporization tube 131 and the buffer tube 132 are opposite. A plurality of heat conduction fins 1311 evenly distributed at equal intervals in the circumferential direction are fixed on the outer walls of the vaporization tube 131 and the buffer tube 132. The injection tube 134 is connected to the lower connector 133, and a first solenoid valve 136 is connected between the injection tube 134 and the connector 133. The output tube 135 is connected to the upper connector 133. After adopting the above scheme, during use, the output tube 135 is used to connect to the EO sterilization cabinet, the medicine to be vaporized is injected from the injection tube 134, and the water inlet pipe 1211 is used to inject hot water. After the hot water enters the heating inner tank 12, it will heat the vaporization tube 131 and the buffer tube 132, vaporize the medicine in the vaporization tube 131, and then the medicine enters the EO sterilization cabinet from the output tube 135. The vaporization device of the present utility model adopts a multi-tube structure, and has heat conduction fins 1311 on the vaporization tube 131, with a large heating area, a high degree of vaporization, and greatly improves the vaporization efficiency. Through the provided buffer tube 132, the medicine that is not vaporized in time is temporarily stored in the buffer tube 132, and after being vaporized again, it is introduced into the EO sterilization cabinet for use, avoiding the problem that insufficient vaporization affects the sterilization efficiency, and at the same time making the vaporization device of the present utility model applicable to large-flow application scenarios.

[0038] It should be noted that in the present utility model, the first solenoid valve 136 and the second solenoid valve 137 are preferably one-way valves, so that the medicine can only flow in one direction, which can avoid the backflow of the medicine. In addition, in general use scenarios, the second solenoid valve 137 on the buffer tube 132 is in a closed state, and the second solenoid valve 137 on the buffer tube 132 is only opened in large-flow application scenarios, so that the medicine that is not vaporized in time is temporarily stored in the buffer tube 132, and the medicine in the buffer tube 132 is dispersed into other vaporization tubes 131 and then introduced into the EO sterilization cabinet for use after being vaporized again.

[0039] It is worth noting that it is not difficult to think that the buffer tube 132 and the vaporization tube 131 can also adopt exactly the same structure, and the above scheme can also be realized. However, the first solenoid valve 136 and the second solenoid valve 137 are selected as two-way valves to ensure that the buffer tube 132 can recover the medicine that is not vaporized in time, but there is a risk of backflow of the medicine.

[0040] It should be further noted that the second solenoid valve 137 and the humidity sensor 138 need to be electrically connected during operation. When the humidity sensor 138 detects that the humidity value is too high, it indicates that the drug vaporization is insufficient. At this time, the second solenoid valve 137 needs to be closed to extend the vaporization time of the drug in the vaporization tube 131 and ensure sufficient drug vaporization. The first solenoid valve 136 and the humidity sensor 138 also need to be electrically connected during operation. When the humidity sensor 138 detects insufficient drug vaporization, the first solenoid valve 136 is closed or the flow rate is reduced to re-vaporize the drug that has not been vaporized in time and avoid the problem that excessive drug injection affects vaporization.

[0041] Preferably, as shown by Figure 1 and Figure 2 In this embodiment, the outer housing 11 includes a heat-insulating sheath 111 and heat-insulating end caps 112 fixed at both ends of the heat-insulating sheath 111. The water inlet pipe 1211 and the water outlet pipe 1212 penetrate through the heat-insulating sheath 111. During use, the contact points between the water inlet pipe 1211 and the water outlet pipe 1212 and the heat-insulating sheath 111 need to be sealed, for example, by adding sealing rings to improve the heat-insulating effect.

[0042] Preferably, as shown by Figure 1 and Figure 2 In this embodiment, the heat-insulating end caps 112 are fixed at both ends of the heat-insulating sheath 111 by flanges and bolts, which is easy to assemble and disassemble, facilitating the assembly, use, disassembly, and cleaning of the outer housing 11.

[0043] Preferably, as shown by Figure 1 and Figure 2 In this embodiment, the heating inner tank 12 includes a heating jacket 121 and heating end caps 122 fixed at both ends of the heating jacket 121. The injection pipe 134 and the output pipe 135 penetrate through the heat-insulating end cap 112 and the heating end cap 122. During use, the contact points between the injection pipe 134 and the output pipe 135 and the heat-insulating end cap 112 and the heating end cap 122 need to be sealed, for example, by adding sealing rings to improve the heat-insulating effect.

[0044] Preferably, as shown by Figure 1 and Figure 2 In this embodiment, the heating end caps 122 are fixed at both ends of the heating jacket 121 by flanges and bolts, which is easy to assemble and disassemble, facilitating the assembly, use, disassembly, and cleaning of the heating inner tank 12.

[0045] Preferably, as shown by Figure 1 and Figure 2 In this embodiment, it further includes: a support ring 1121. The support ring 1121 is fixed to the inner wall of the heat-insulating end cap 112, and the heating jacket 121 is clamped between the two support rings 1121 to further improve the assembly stability of the outer housing 11 and the heating inner tank 12.

[0046] Preferably, as shown by Figure 1 and Figure 2 in this embodiment, the outer wall of the heating end cap 122 abuts against the inner wall of the supporting ring 1121, improving the assembly stability of the outer housing 11 and the heating inner liner 12 and avoiding relative jitter.

[0047] Preferably, as shown by Figure 1 and Figure 2 in this embodiment, the inner space between the outer housing 11 and the heating inner liner 12 is a vacuum chamber, and there is heat preservation filler in the vacuum chamber. The heat preservation filler can be selected as polystyrene foam, which is used to improve the heat preservation effect and the vaporization efficiency of the medicine.

[0048] Optionally, as shown by Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 in this embodiment, the connector 133 includes: a drainage tray 1331 and a plug cover 1332. A plurality of first connection ports 1333 are fixed on the drainage tray 1331. The vaporization tube 131 and the buffer tube 132 are connected to the corresponding first connection ports 1333. The plug cover 1332 is fixed on the drainage tray 1331, and a second connection port 1334 is fixed on the plug cover 1332. The output tube 135 and the first solenoid valve 136 are connected to the corresponding second connection ports 1334. The inner space of the drainage tray 1331 is used for the transition and drainage of the medicine, and the plug cover 1332 is used to restrict the medicine. Moreover, the connector 133 is connected to the corresponding accessories by flanges and bolts. For example, the vaporization tube 131 and the buffer tube 132 are connected to the corresponding first connection ports 1333 by flanges and bolts.

[0049] Preferably, as shown by Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 in this embodiment, the plug cover 1332 is fixed on the drainage tray 1331 by bolts, which is convenient for installation, has high stability, and is also easy to disassemble the plug cover 1332, facilitating the maintenance and cleaning of the connector 133.

[0050] It should be noted that the first solenoid valve 136, the second solenoid valve 137, and the humidity sensor 138 are all commercially available conventional devices with built-in power switches. Those skilled in the art can make conventional selections according to the usage needs. Their working principles are common knowledge well-known to those skilled in the art and have been fully disclosed by the prior art, so they will not be elaborated here too much.

[0051] The circuit connection involved in the present utility model is a common means adopted by those skilled in the art and can obtain technical inspiration through a limited number of tests, belonging to the widely used prior art.

[0052] The components not described in detail in this article are prior art.

[0053] The working principle and usage process of the present utility model: For the vaporization device of the present utility model, during use, the output pipe 135 is used to connect to the EO sterilization cabinet. The drug to be vaporized is injected from the injection pipe 134, and the water inlet pipe 1211 is used to inject hot water. After the hot water enters the heating inner tank 12, it will heat the vaporization pipe 131 and the buffer pipe 132, causing the drug in the vaporization pipe 131 to vaporize. Then the drug enters the EO sterilization cabinet from the output pipe 135;

[0054] In the preferred implementation, that is, when the first solenoid valve 136 and the second solenoid valve 137 are selected as one-way valves and the medium flow direction of the second solenoid valve 137 connecting the vaporization pipe 131 and the buffer pipe 132 is opposite, the vaporization device of the present utility model has two working modes:

[0055] A: The second solenoid valve 137 connecting the buffer pipe 132 is closed. This mode is tentatively defined as the normal working mode. In this working mode, the drug in the vaporization pipe 131 vaporizes normally and enters the EO sterilization cabinet from the output pipe 135;

[0056] B: The second solenoid valve 137 connecting the buffer pipe 132 is opened. This mode is tentatively defined as the abnormal working mode. There are mainly two reasons for the vaporization device to be in the abnormal working mode. The drug vaporizes insufficiently in the normal working mode and a large-flow sterilization scenario is required (in fact, the two reasons can also be attributed to one, that is, the drug vaporizes insufficiently. The reasons for the insufficient drug vaporization are mainly divided into two types. If the drug vaporizes insufficiently in the normal working mode, it is mainly due to the failure of the vaporization device itself. In a large-flow sterilization scenario, if the drug vaporizes insufficiently and the device works normally, it is mainly because the drug injection flow rate is large and the flow velocity is fast. Without changing the first solenoid valve 136, introducing the buffer pipe 132 into the vaporization work can ensure the flow rate while enabling the drug to be fully vaporized). In the abnormal working mode, the drug that has not been vaporized in time is temporarily stored in the buffer pipe 132 and is introduced into the EO sterilization cabinet for use after re-vaporization.

[0057] The vaporization device of the present utility model adopts a multi-tube structure, and has heat-conducting fins 1311 on the vaporization tube 131. The heat absorption area is large, the vaporization degree is high, and the vaporization efficiency is greatly improved. Through the arranged buffer tube 132, the drugs that are not vaporized in time are temporarily stored in the buffer tube 132 and are introduced into the EO sterilization cabinet for use after re-vaporization, avoiding the problem that insufficient vaporization affects the sterilization efficiency, and at the same time making the vaporization device of the present utility model applicable to large-flow application scenarios.

[0058] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A multi-tube vaporization device for EO sterilization, comprising a multi-tube vaporization device body (1), the multi-tube vaporization device body (1) comprising an outer shell (11), a heating liner (12) located inside the outer shell (11), and a vaporization mechanism (13) arranged inside the heating liner (12), a water inlet pipe (1211) and a water outlet pipe (1212) are fixed on the heating liner (12), characterized in that: The vaporization mechanism (13) comprises: A connector (133), two of the connectors (133) are symmetrically arranged, and a plurality of vaporization tubes (131) and at least one cache tube (132) are provided between the two connectors (133), a No. 2 solenoid valve (137) and a humidity sensor (138) are connected between the vaporization tube (131) and the connector (133) and between the cache tube (132) and the connector (133), and the medium flow directions of the No. 2 solenoid valve (137) connecting the vaporization tube (131) and the cache tube (132) are opposite, and a plurality of heat-conducting fins (1311) evenly spaced along a circumferential direction are fixed to the outer walls of the vaporization tube (131) and the cache tube (132); An injection pipe (134), the injection pipe (134) is connected to the connector (133) located below, and a first solenoid valve (136) is connected between the injection pipe (134) and the connector (133); An output pipe (135), wherein the output pipe (135) is connected to the connection head (133) located above.

2. A multi-tube vaporization device for EO sterilization according to claim 1, characterized in that: The outer shell (11) comprises a thermal insulation jacket (111) and thermal insulation end covers (112) fixed at both ends of the thermal insulation jacket (111); the water inlet pipe (1211) and the water outlet pipe (1212) penetrate the thermal insulation jacket (111).

3. A multi-tube vaporization device for EO sterilization according to claim 2, characterized in that: The thermal insulation end covers (112) are fixed to both ends of the thermal insulation jacket (111) by means of flanges and bolts.

4. A multi-tube vaporization device for EO sterilization according to claim 2, characterized in that: The heating liner (12) comprises a heating sleeve (121) and heating end covers (122) fixed at both ends of the heating sleeve (121); the injection pipe (134) and the output pipe (135) penetrate the heat-insulating end cover (112) and the heating end cover (122).

5. A multi-tube vaporization device for EO sterilization according to claim 4, characterized in that: The heating end cover (122) is fixed to both ends of the heating sleeve (121) by means of flanges and bolts.

6. A multi-tube vaporization device for EO sterilization according to claim 4, characterized in that: Also includes: A support ring (1121), wherein the support ring (1121) is fixed to the inner wall of the heat-insulating end cover (112), and the heating sleeve (121) is clamped between two support rings (1121).

7. A multi-tube vaporization device for EO sterilization according to claim 6, characterized in that: The outer wall of the heating end cover (122) abuts against the inner wall of the supporting ring (1121).

8. The multi-tube vaporization device for EO sterilization according to claim 1, characterized in that: The inner space of the outer shell (11) and the heating inner container (12) is a vacuum chamber, and a heat-insulating filler is provided in the vacuum chamber.

9. A multi-tube vaporization device for EO sterilization according to claim 1, characterized in that: The connector (133) comprises: A drainage plate (1331), on which a plurality of first connection ports (1333) are fixed, and the vaporization tube (131) and the cache tube (132) are connected to corresponding first connection ports (1333); A plugging cover (1332), wherein the plugging cover (1332) is fixed on the drainage plate (1331), and a second connecting port (1334) is fixed on the plugging cover (1332), and the output pipe (135) and the first solenoid valve (136) are connected to the corresponding second connecting port (1334).

10. A multi-tube vaporization device for EO sterilization according to claim 9, characterized in that: The blocking cover (1332) is fixed to the drainage plate (1331) by means of bolts.

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