A hydrogen peroxide low-temperature plasma sterilizer liquid supply device assembly
By introducing a lead screw motor and an electromagnetic drive positioning system into a hydrogen peroxide low-temperature plasma sterilizer, combined with photoelectric sensors and weight sensors, the problems of automatic control and maintenance have been solved, achieving high-precision automatic positioning and low-cost maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MUDANJIANG PLASMA PHYSICAL APPL TECH CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-08-04
AI Technical Summary
Existing hydrogen peroxide low-temperature plasma sterilizers have low levels of automation, their mechanical structures are prone to wear, leading to decreased positioning accuracy, and they are difficult and costly to maintain.
The positioning system, which uses a lead screw motor and electromagnetic drive, combined with photoelectric sensors and weight sensors, enables automatic positioning and anti-inversion of the capsule box. It is also equipped with a recycling device to indicate when the capsule is empty, simplifying the maintenance process.
It improves the accuracy of automatic control, prevents sterilization failure, reduces maintenance difficulty and cost, and simplifies the maintenance process.
Smart Images
Figure CN224585088U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical disinfection device technology, specifically to a capsule liquid supply device assembly for a hydrogen peroxide low-temperature plasma sterilizer. Background Technology
[0002] Low-temperature hydrogen peroxide plasma sterilization has the advantages of low temperature, non-toxicity, high efficiency, and thoroughness, and has been widely used in various medical institutions and other places. Utility model patent CN220967758U provides a technical solution for a "capsule supply device assembly for a low-temperature hydrogen peroxide plasma sterilizer," which was applied for by the applicant in 2003. It uses more efficient capsules to supply hydrogen peroxide solution to the sterilizer. To reduce production costs, its actuators largely employ mechanical structures; for example, the positioning and clamping functions of the capsule box are basically achieved through mechanical structures. This design can effectively control costs, but the degree of automation is low, and the sterilization program still needs to be manually started after the capsule box is inserted. Furthermore, prolonged use can lead to misalignment due to mechanical wear, resulting in decreased operational accuracy and positioning inaccuracies. Since these problems are caused by mechanical wear, repair and recalibration are very difficult. Once the equipment malfunctions, repair often involves replacing the entire unit assembly, resulting in high repair costs. Currently, with the continuous development and advancement of electronic component technology, their procurement costs are constantly decreasing, providing a broader space for the intelligent development and precise control of mechanical equipment. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a hydrogen peroxide low-temperature plasma sterilizer liquid supply device assembly with a higher degree of automatic control and easier maintenance.
[0004] The technical solution of this utility model is: a liquid supply device assembly for a hydrogen peroxide low-temperature plasma sterilizer, including a capsule box, a supply device, a liquid injection device, and a recovery device. The supply device includes a box-carrying compartment, a guide rail, a lead screw, a lead screw motor, and a box-out drive device. The front end face of the capsule box has an anti-inversion groove at a non-central position, and the back face has a positioning groove. The inner end of the box-carrying compartment has a start switch and a box-out switch. The trigger positions of the start switch and the box-out switch are respectively matched with the end face of the capsule box and the anti-inversion groove. The back face of the box-carrying compartment has a positioning pin whose electromagnetic drive position is matched with the positioning groove of the capsule box.
[0005] The technical advantages of this invention are: a simplified structure, facilitating initial debugging and quick repositioning during future maintenance; an anti-inversion function to effectively prevent sterilization failure due to incorrect capsule insertion; and an automatic empty capsule collection reminder function that allows a certain number of empty capsules to be temporarily stored in a collection box, with an automatic reminder to retrieve them once a certain number have accumulated using a weight sensor. Attached Figure Description
[0006] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the present invention with the recycling box and capsule box removed. Figure 3 This is a schematic diagram of the back structure of the present invention without the recycling box and capsule box; Figure 4 This is a three-dimensional structural diagram of the back of the capsule box of this utility model. Detailed Implementation
[0007] like Figures 1 to 4 As shown, a hydrogen peroxide low-temperature plasma sterilizer liquid supply device assembly includes a capsule box 1, a supply device, an injection device 2, and a recovery device 3. The capsule box contains several capsules neatly arranged with hydrogen peroxide solution. After being placed in the supply device, the injection device draws hydrogen peroxide solution from the capsules and injects it into the atomization chamber for atomization sterilization. The supply device includes a box-carrying compartment 4, a guide rail 5, a lead screw 6, a lead screw motor 7, and a box-dispensing drive device 8. The box-carrying compartment includes a tray and a cover made of sheet metal. The supply device pushes the inserted capsule box into place. During each sterilization cycle, the needle of the injection device inserts into one capsule through a pre-drilled hole in the capsule box to draw hydrogen peroxide solution. One capsule box is fully... After the capsules are consumed, the ejection drive ejects the capsule box into the recycling box. This structure is essentially the same as existing technology, and can be referenced from background technology and patent literature. The capsule box 1 has an anti-inversion groove 9 at a non-central position on its front end face inside the carrier compartment, and a positioning groove 10 on its back. The outer end of the carrier compartment has a capsule box inlet. The inner end of the carrier compartment 4 opposite the inlet has a start switch 11 and a retraction switch 12. The trigger positions of the start switch 11 and the retraction switch 12 correspond to the end face of the capsule box 1 and the anti-inversion groove 9, respectively. The back of the carrier compartment 4 has a positioning pin 13 with an electromagnetic drive position corresponding to the positioning groove 10 of the capsule box 1. When the capsule box is correctly inserted, the anti-inversion groove avoids the retraction switch, and the end face of the capsule box only triggers the start switch. The lead screw motor starts swallowing the capsule box and executes the normal start-up procedure. The positioning pin, driven by the electromagnetic drive, extends forward and inserts into the positioning groove to lock the capsule box. The lead screw motor then begins to align the capsules one by one to complete the sterilization process. If the capsule box is upside down or inverted, the end face of the capsule box will trigger the ejection switch, which will drive the capsule box out via a lead screw motor.
[0008] The capsule compartment 4 has a moving alignment trigger 14 on its back, and a photoelectric sensor 15 is located on the inner side of the alignment trigger 14's running trajectory. When the start switch is triggered, the capsule box first moves inward a certain distance until the alignment trigger reaches the photoelectric sensor. The control system receives the signal, the lead screw motor stops, and then the lead screw motor rotates back to move the capsule box back until the first capsule is aligned with the needle of the injection device, and then the subsequent sterilization procedure is executed. In this way, if the equipment wears down after long-term use and the needle cannot be aligned with the pre-drilled hole of the capsule, the parameters can be adjusted directly in the system program to recalibrate the capsule box's movement distance, greatly simplifying the maintenance procedure and reducing the cost of replacing parts.
[0009] The recycling device 3 is a recycling box, and a weight sensor 16 is installed at the bottom of the recycling box to weigh it. This sensor sends a signal to the system indicating changes in the weight of the recycling box. Each time a completely emptied capsule pops out and falls into the recycling box, the resulting weight change triggers an audible alert. Once a certain number of capsules have been emptied, an audible signal will be emitted indicating that the recycling box is full and prompting the user to retrieve the capsule.
[0010] A guide section 17 with an inclined surface is provided between the container compartment 4 and the recycling device 3. The guide section is located below the container compartment and above the recycling box to guide the capsule box to fall smoothly into the recycling box in the correct posture and avoid jamming.
[0011] The inlet of the capsule compartment 4 is located on the frame and is equipped with an anti-re-insertion baffle 18. The anti-re-insertion baffle 18 is made of an elastic sheet bent into a "V" shape. One forked end of the anti-re-insertion baffle 18 is fixed to the frame. The inlet of the capsule compartment 4 has an opening part 19 that bends outward and cooperates with the anti-re-insertion baffle 18. When the capsule compartment 4 moves away, the anti-re-insertion baffle 18 opens, and its free end blocks the inlet of the capsule compartment 4. After the capsule compartment 4 moves closer to the inlet, the opening part 19 presses the anti-re-insertion baffle 18 to close it and move away from the inlet of the capsule compartment 4. When there is a capsule in the capsule compartment, the program starts normally. The capsule compartment moves to the inside, and the anti-re-insertion baffle opens to block the inlet, which can prevent the re-insertion of a capsule.
[0012] The capsule box 1 has a directional marking 20 on its surface. The directional marking is an arrow-shaped indentation.
Claims
1. A hydrogen peroxide low-temperature plasma sterilizer liquid supply device assembly, comprising a capsule box (1), a box supply device, a liquid injection device (2), and a recovery device (3), wherein the box supply device comprises a box carrier (4), a guide rail (5), a lead screw (6), a lead screw motor (7), and a box dispensing drive device (8), characterized in that, The capsule box (1) has an anti-inversion groove (9) at a non-middle position on the front end face and a positioning groove (10) on the back. The inner end of the box compartment (4) is provided with a start switch (11) and a box ejection switch (12). The trigger positions of the start switch (11) and the box ejection switch (12) are respectively matched with the end face of the capsule box (1) and the anti-inversion groove (9). The back of the box compartment (4) is provided with a positioning pin (13) whose electromagnetic drive position is matched with the positioning groove (10) of the capsule box (1).
2. The hydrogen peroxide low temperature plasma sterilizer liquid supply assembly of claim 1, wherein, The back of the carrier compartment (4) is provided with a positioning trigger part (14) that moves with it, and a photoelectric sensor (15) that works with it is located on the inner side of the running trajectory of the positioning trigger part (14).
3. The hydrogen peroxide low temperature plasma sterilizer liquid supply assembly of claim 1, wherein, The recycling device (3) is a recycling box, and a weight sensor (16) for weighing the recycling box is provided below the recycling box.
4. The hydrogen peroxide low temperature plasma sterilizer liquid supply assembly of claim 3, wherein, A guide section (17) with an inclined surface is provided between the container compartment (4) and the recycling device (3).
5. The hydrogen peroxide low temperature plasma sterilizer liquid supply assembly of claim 1, wherein, The inlet of the cartridge compartment (4) is located on the frame and is equipped with an anti-re-insertion baffle (18). The anti-re-insertion baffle (18) is made of an elastic sheet bent into a "V" shape. One end of the fork end of the anti-re-insertion baffle (18) is fixed to the frame. The inlet of the cartridge compartment (4) is provided with an opening part (19) that bends outward and cooperates with the anti-re-insertion baffle (18). When the cartridge compartment (4) moves away, the anti-re-insertion baffle (18) opens and its free end blocks the inlet of the cartridge compartment (4). After the cartridge compartment (4) moves closer to the inlet end, the opening part (19) presses the anti-re-insertion baffle (18) to close and leave the inlet of the cartridge compartment (4).
6. The hydrogen peroxide low temperature plasma sterilizer liquid supply assembly of any one of claims 1 to 5, wherein, The capsule box (1) has a directional marking (20) on its surface.