Residual gas treatment device of hydrogen peroxide sterilizer

Abstract

The invention discloses a residual gas treatment device of a hydrogen peroxide sterilizer, and relates to the technical field of gas treatment devices.The residual gas treatment device is technically characterized by comprising a treatment shell, a gas inlet pipe is fixedly connected to one side of the treatment shell, an exhaust pipe is fixedly connected to the upper end of the treatment shell, and a filtering assembly is arranged on one side of the gas inlet pipe; a plurality of catalyst plates distributed in a crossed mode are fixedly connected to the inner wall of the treatment shell, a preheating assembly is fixedly connected to the outer side wall of the treatment shell, the filtering assembly comprises a filtering box, a filtering net is installed on the inner wall of the frame, and a baffle is fixedly connected to one side of the filtering net; a cleaning assembly is arranged on the inner wall of the filter box and located on one side of the filter screen. Residual gas entering the treatment shell is preliminarily filtered through the filtering assembly, impurities such as solid particles in the gas can be effectively intercepted, pore channel blockage and active site loss caused by the fact that the impurities make contact with the catalyst plate are avoided, and it is ensured that the catalyst plate is always kept in an efficient catalysis state.

Description

Residual gas treatment device for hydrogen peroxide sterilizer Technical Field

[0001] This invention relates to the field of gas treatment device technology, specifically to a residual gas treatment device for hydrogen peroxide sterilizers. Background Technology

[0002] A hydrogen peroxide sterilizer is a specialized device that uses hydrogen peroxide as its core sterilization medium, leveraging its strong oxidizing properties to destroy the structure of microorganisms and achieve sterilization. Its core working logic is to convert hydrogen peroxide into a gaseous (vaporized) or mist (atomized) state, dispersing it evenly throughout the sterilization space or on the surface of the carrier. Through oxidation, it destroys the cell membranes, DNA / RNA, and other key structures of microorganisms such as bacteria, viruses, and spores, ultimately achieving sterilization. However, after the sterilization process, a certain concentration of hydrogen peroxide gas remains in the sterilization chamber. This gas has strong oxidizing and irritating properties; direct emission or leakage can damage the respiratory tract, skin, and eyes of operators, and may also corrode surrounding equipment and pollute the environment. Therefore, it must be rendered harmless through a dedicated residual gas treatment device before being discharged in compliance with standards.

[0003] Currently, the residual gas treatment devices in existing hydrogen peroxide sterilizers generally use catalyst plates. The substrate is usually a porous ceramic or metal carrier, with precious metal catalysts such as platinum and palladium loaded on the surface. When residual hydrogen peroxide gas flows through the surface of the catalyst plate, it will undergo a rapid decomposition reaction under the action of the catalyst. The decomposition products are water and oxygen, and no additional harmful substances are produced. However, impurities such as solid particles and liquid hydrogen peroxide droplets carried in the residual gas can easily come into direct contact with the catalyst plate, causing blockage of the pores of the catalyst plate and loss of active sites. This will not only significantly shorten the service life of the catalyst plate, but also seriously reduce the decomposition efficiency of hydrogen peroxide. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a residual gas treatment device for hydrogen peroxide sterilizers to achieve the aforementioned objectives.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a residual gas treatment device for a hydrogen peroxide sterilizer, comprising: a treatment shell, an air inlet pipe fixedly connected to one side of the treatment shell, an exhaust pipe fixedly connected to the upper end of the treatment shell, a filter assembly disposed on one side of the air inlet pipe, multiple cross-distributed catalyst plates fixedly connected to the inner wall of the treatment shell, and a preheating assembly fixedly connected to the outer wall of the treatment shell; the filter assembly includes a filter box, multiple through holes equally spaced at the upper end of the filter box, a frame slidably connected to the inner wall of the through holes, a filter screen installed on the inner wall of the frame, a baffle fixedly connected to one side of the filter screen, a cleaning assembly disposed on the inner wall of the filter box and located on one side of the filter screen, a sealing cover fixedly connected to the upper end of the frame, latches fixedly connected to both sides of the upper end of the sealing cover, mounting brackets fixedly connected to both sides of the filter box, a locking rod rotatably connected to the inner wall of the mounting bracket, and three pull rods fixedly connected to the outer wall of the locking rod.

[0006] Preferably, the cleaning assembly includes three rotating rods rotatably connected to one side of the filter box, with each rotating rod having a driven wheel fixedly connected to its outer side wall. Multiple rubber rods are fixedly connected to one end of the driven wheel, which passes through the outer side wall of the filter box. These rubber rods are arranged in a circumferential array, and each rubber rod has a fixedly connected a ball at one end. A frame is fixedly connected to one side of the filter box, and a motor is fixedly connected to one side of the frame. Three drive wheels are rotatably connected to the inner side of the frame, and the output end of the motor is fixedly connected to one of the drive wheels. A drive belt is installed between each of the three drive wheels and the three driven wheels.

[0007] Preferably, the preheating assembly includes a heating shell fixedly connected to the outer wall of the processing shell, a heating rod fixedly connected to the inner wall of the heating shell, an electric heater fixedly connected to the outer wall of the heating shell, the heating rods being spirally distributed on the inner wall of the heating shell, the output end of the electric heater being fixedly connected to the heating rods, and an inlet and an outlet fixedly connected to the outer wall of the heating shell.

[0008] Preferably, a second motor is fixedly connected to one side of the mounting bracket, and the output end of the second motor is fixedly connected to the locking rod.

[0009] Preferably, both of the two latches have a locking hole at their upper ends, and the pull rod passes through the locking hole and is slidably connected to it. The pull rod is arc-shaped.

[0010] Preferably, the rotating rod is located on one side of the baffle, and when the rotating rod rotates, the actuating ball contacts the baffle.

[0011] Preferably, the filter box is connected to the air intake pipe, and a connecting pipe is fixedly connected to one side of the filter box. One-way valves are installed on the outer walls of the connecting pipe, the air intake pipe, and the exhaust pipe.

[0012] Preferably, the surfaces of the plurality of catalyst plates are provided with holes of the same size, and the catalyst plate is a ceramic substrate.

[0013] Compared with existing technologies, this invention provides a residual gas treatment device for hydrogen peroxide sterilizers, which has the following beneficial effects: By using a dedicated filtration component to perform pre-filtration treatment on the residual gas entering the treatment chamber, it can accurately and efficiently intercept various impurities such as solid particles and dust mixed in the gas. It should be noted that if impurities in the residual gas directly contact the subsequent catalytic mechanism, they can easily cause irreversible damage such as clogging of catalyst plate pores and loss of active component sites. The pre-filtration design of this device avoids these problems from the source, ensuring that the catalyst plate always maintains a highly efficient and stable catalytic activity state, laying a solid foundation for subsequent gas decomposition reactions. Furthermore, the spiral heating rod enables precise temperature control within the treatment chamber, maintaining the internal temperature stably within the optimal activity range of the catalyst. This eliminates the drawbacks of large temperature fluctuations in traditional heating methods, providing continuous and suitable optimal thermodynamic conditions for the decomposition reaction of hydrogen peroxide molecules, ensuring the smooth progress and efficiency stability of the reaction. Furthermore, the cross-distributed catalyst plate structure not only significantly extends the flow path of residual gas within the treatment shell, allowing for more sufficient reaction time between the gas and the catalyst, but also effectively expands the contact area between the gas and the active components of the catalyst, greatly improving the decomposition reaction efficiency of hydrogen peroxide molecules. This ensures that residual hydrogen peroxide gas can be fully and thoroughly decomposed into water and oxygen, which are harmless to the environment and human body, thus eliminating the risk of secondary pollution caused by residual gas emissions at the source.

[0014] In terms of ease of maintenance of the filter components, this device also has outstanding advantages: the motor drives the rubber rod and the actuating ball to rotate synchronously. The actuating ball periodically contacts the baffle structure corresponding to the filter screen, which causes the filter screen to vibrate regularly. This causes the impurities trapped on its surface to fall off and be discharged quickly under the action of vibration, effectively avoiding the problem of impurity accumulation and blockage caused by long-term use of the filter screen. This significantly extends the stable service life of the filter screen and reduces the labor and material costs of frequent maintenance. At the same time, the motor drives the locking rod to achieve forward and reverse movement, which can quickly and securely lock and easily disassemble the filter screen frame. The whole process does not require complicated tools, and the operation is simple and efficient. The filter screen can be replaced or cleaned quickly, which greatly improves the convenience and timeliness of equipment maintenance and ensures the continuity and stability of the overall operation of the device. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the filter box structure of the present invention; Figure 3 is a schematic diagram of the disassembled structure of the filter assembly of the present invention; Figure 4 is an enlarged schematic diagram of the structure at point A in Figure 3 of the present invention; Figure 5 is a schematic diagram of the disassembled structure of the processing shell and the heating shell of the present invention; Figure 6 is a schematic diagram of the cross-sectional structure of the processing shell of the present invention.

[0016] In the diagram: 1. Processing shell; 2. Inlet pipe; 3. Exhaust pipe; 4. Filter assembly; 5. Catalyst plate; 6. Preheating assembly; 401. Filter box; 402. Through hole; 403. Frame; 404. Filter screen; 405. Baffle; 406. Sealing cover; 407. Lock; 408. Mounting bracket; 409. Locking rod; 410. Pull rod; 7. Cleaning assembly; 701. Rotating rod; 702. Driven wheel; 703. Rubber rod; 704. Actuating ball; 705. Frame; 706. Motor 1; 707. Drive wheel; 708. Drive belt; 601. Heating shell; 602. Heating rod; 603. Electric heater; 604. Water inlet; 605. Water outlet; 4081. Motor 2; 4071. Lock hole; 4011. Connecting pipe. Detailed Implementation

[0017] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0018] Please refer to Figures 1-6. This invention provides a technical solution for a residual gas treatment device for a hydrogen peroxide sterilizer: It includes a treatment shell 1, with a discharge pipe installed at the bottom of the shell 1 for discharging water; an air inlet pipe 2 fixedly connected to one side of the shell 1; an exhaust pipe 3 fixedly connected to the upper end of the shell 1; a filter assembly 4 disposed on one side of the air inlet pipe 2; multiple cross-distributed catalyst plates 5 fixedly connected to the inner wall of the shell 1; and a preheating assembly 6 fixedly connected to the outer wall of the shell 1. The filter assembly 4 includes a filter box 401, with multiple through holes 402 evenly spaced at the upper end of the filter box 401. A frame 403 is slidably connected to the inner wall of the through hole 402. A filter screen 404 is installed on the inner wall of the frame 403. A baffle 405 is fixedly connected to one side of the filter screen 404. A cleaning component 7 is provided on the inner wall of the filter box 401 and on one side of the filter screen 404. A sealing cover 406 is fixedly connected to the upper end of the frame 403. Locks 407 are fixedly connected to both sides of the upper end of the sealing cover 406. Mounting brackets 408 are fixedly connected to both sides of the filter box 401. A locking rod 409 is rotatably connected to the inner wall of the mounting bracket 408. Three pull rods 410 are fixedly connected to the outer wall of the locking rod 409. The gas entering the filter box 401 is initially filtered by the filter screen 404 to prevent impurities from contacting the catalyst plate 5 and causing pore blockage and loss of active sites, thus greatly extending the service life of the catalyst plate 5 and improving the catalytic decomposition efficiency. The locking rod 409 drives the pull rod 410 to cooperate with the buckle 407 to quickly lock and disassemble the frame 403, thereby achieving the effect of quick replacement or cleaning.

[0019] The cleaning assembly 7 includes a rotating rod 701 rotatably connected to one side of the filter box 401, and there are three rotating rods 701 distributed at equal intervals. A driven wheel 702 is fixedly connected to the outer wall of the rotating rod 701. Multiple rubber rods 703 are fixedly connected to the outer wall of one end of the driven wheel 702, which passes through the filter box 401. The multiple rubber rods 703 are distributed in a circumferential array. A toggle ball 704 is fixedly connected to one end of each of the multiple rubber rods 703. A frame 705 is fixedly connected to one side of the filter box 401. A motor 706 is fixedly connected to one side of the frame 705. Three drive wheels 707 are rotatably connected to the inner side of the frame 705. The output end of the motor 706 is fixedly connected to one of the drive wheels 707. A drive belt 708 is installed between each of the three drive wheels 707 and the three driven wheels 702. The motor 706 drives three drive wheels 707 to rotate. The three drive wheels 707 drive three driven wheels 702 and rotating rod 701 to rotate synchronously via drive belt 708. The rotating rod 701 drives the rubber rod 703 to contact the baffle 405 with the actuating ball 704, thereby causing the filter screen 404 to vibrate. This causes the impurities trapped on the surface of the filter screen 404 to fall off, avoiding the increase in airflow resistance caused by the clogging of the filter screen 404 and ensuring filtration efficiency.

[0020] The preheating assembly 6 includes a heating shell 601 fixedly connected to the outer wall of the processing shell 1. A temperature detector is installed on the outer wall of the heating shell 601, with its detection end located inside the heating shell 601 for monitoring temperature. A heating rod 602 is fixedly connected to the inner wall of the heating shell 601, and an electric heater 603 is fixedly connected to the outer wall of the heating shell 601. The electric heater 603 is existing technology and is used to transfer heat to the heating rod 602. The heating rod 602 is spirally distributed on the inner wall of the heating shell 601. An inlet 604 and an outlet 605 are fixedly connected to the outer wall of the heating shell 601. The water on the inner wall of the heating shell 601 is heated by the heating rod 602 output from the electric heater 603, thereby raising the temperature inside the processing shell 1 to the optimal activity range of the catalyst through heat conduction.

[0021] A second motor 4081 is fixedly connected to one side of the mounting bracket 408. The second motor 4081 is a three-phase AC asynchronous motor capable of forward and reverse rotation. The output end of the second motor 4081 is fixedly connected to the locking rod 409. The second motor 4081 drives the locking rod 409 to rotate, thereby causing the pull rod 410 to be inserted into the locking hole 4071, improving the sealing performance between the sealing cover 406 and the filter box 401.

[0022] Both latches 407 have a locking hole 4071 at their upper ends. A pull rod 410 passes through the locking hole 4071 and is slidably connected to it. The pull rod 410 is arc-shaped. When the locking rod 409 is rotated, the sealing cover 406 can be locked through the pull rod 410.

[0023] The rotating rod 701 is located on one side of the baffle 405. When the rotating rod 701 rotates, the agitator ball 704 abuts against the baffle 405. The rotation of the rotating rod 701 causes the agitator ball 704 to abut against the baffle 405, causing the filter screen 404 to vibrate. This causes the solid particles trapped on the surface of the filter screen 404 to fall off, preventing impurities from clogging the pores of the filter screen 404.

[0024] The filter box 401 is connected to the air inlet pipe 2. A connecting pipe 4011 is fixedly connected to one side of the filter box 401. One-way valves are installed on the outer walls of the connecting pipe 4011, the air inlet pipe 2, and the exhaust pipe 3. The connecting pipe 4011 is connected to the pipeline for discharging residual gas from the hydrogen peroxide sterilizer. The one-way valves prevent gas backflow and avoid secondary contamination caused by the treated gas flowing back into the sterilizer cavity.

[0025] Multiple catalyst plates 5 have holes of the same size on their surfaces. The catalyst plate 5 is a ceramic substrate, and the catalyst plate 5 is existing technology. The active catalyst component is loaded onto the surface and pores of the catalyst plate 5 by impregnation, which will not be described further. The multiple holes of various sizes can increase the contact area between the gas and the catalyst on the catalyst plate 5, thereby improving the cracking efficiency of hydrogen peroxide molecules.

[0026] In practical use, this invention serves as a residual gas treatment device for a hydrogen peroxide sterilizer. After the hydrogen peroxide sterilizer is used, the pipe is connected to the connecting pipe 4011, allowing the residual hydrogen peroxide gas in the cavity to enter the filter box 401. The filter screen 404 in the filter box 401 filters the solid particles in the gas. The filtered gas enters the processing shell 1 through the air inlet pipe 2. The electric heater 603 outputs the heating rod 602 to heat the water in the heating shell 601. The processing shell 1 and the internal catalyst plate 5 are preheated through heat conduction, stabilizing the temperature inside the processing shell 1 within the optimal activity range of the catalyst, ensuring efficient subsequent catalytic reactions. When the gas enters the processing shell 1, it is blocked by multiple cross-distributed ceramic substrate catalyst plates 5, increasing the gas flow path. At the same time, the pores on the surface of the catalyst plate 5 increase the contact area between the gas and the catalyst plate 5. The hydrogen peroxide molecules in the gas fully contact the active components on the surface and in the pores of the catalyst plate 5, decomposing into harmless water and oxygen. At this time, the oxygen is discharged through the exhaust pipe 3.

[0027] Over time, filter screen 404 may become clogged. Motor 706 can be started to drive the drive wheel 707 to rotate. The drive wheel 707, via drive belt 708, drives three driven wheels 702 and rotating rod 701 to rotate synchronously. The rotation of rotating rod 701 causes the actuating ball 704 at one end of rubber rod 703 to periodically contact baffle 405, causing filter screen 404 to vibrate and dislodge impurities, preventing clogging of the filter screen 404's channels. When replacing or cleaning filter screen 404, motor 4081 can be started to drive the locking rod 409 to rotate. The locking rod 409 drives the pull rod 410 to rotate, causing the pull rod 410 to slide out of the locking hole 4071, thus disassembling the sealing cover 406. Conversely, when the locking rod 409 drives the pull rod 410 to rotate in the opposite direction, the pull rod 410 passes through the locking hole 4071, locking the sealing cover 406 to the filter box 401 by swinging.

[0028] In addition, the device is electrically connected to an external power source and a controller before use. The controller is a conventional, known device used for control.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This method of description is merely for clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in the various embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A residual gas treatment device for a hydrogen peroxide sterilizer, comprising: The processing shell (1) is characterized in that: an air inlet pipe (2) is fixedly connected to one side of the processing shell (1), an exhaust pipe (3) is fixedly connected to the upper end of the processing shell (1), a filter assembly (4) is provided on one side of the air inlet pipe (2), a plurality of cross-distributed catalyst plates (5) are fixedly connected to the inner wall of the processing shell (1), and a preheating assembly (6) is fixedly connected to the outer wall of the processing shell (1); the filter assembly (4) includes a filter box (401), a plurality of through holes (402) are equally spaced on the upper end of the filter box (401), and a frame (403) is slidably connected to the inner wall of the through holes (402), and the frame (403) is slidably connected to the inner wall of the through holes (402). 3) The inner wall is equipped with a filter screen (404), and a baffle (405) is fixedly connected to one side of the filter screen (404). A cleaning component (7) is provided on the inner wall of the filter box (401) and on one side of the filter screen (404). A sealing cover (406) is fixedly connected to the upper end of the frame (403). Locks (407) are fixedly connected to both sides of the upper end of the sealing cover (406). Mounting brackets (408) are fixedly connected to both sides of the filter box (401). A locking rod (409) is rotatably connected to the inner wall of the mounting bracket (408). Three pull rods (410) are fixedly connected to the outer wall of the locking rod (409).

2. The residual gas treatment device for the hydrogen peroxide sterilizer according to claim 1, characterized in that: The cleaning assembly (7) includes a rotating rod (701) rotatably connected to one side of the filter box (401), and there are three rotating rods (701) distributed at equal intervals. A driven wheel (702) is fixedly connected to the outer wall of the rotating rod (701). A plurality of rubber rods (703) are fixedly connected to the outer wall of one end of the driven wheel (702) through the filter box (401). The plurality of rubber rods (703) are arranged in a circumferential array, and one end of the plurality of rubber rods (703) is... A toggle ball (704) is fixedly connected to the filter box (401). A frame (705) is fixedly connected to one side of the filter box (401). A motor (706) is fixedly connected to one side of the frame (705). Three drive wheels (707) are rotatably connected to the inner side of the frame (705). The output end of the motor (706) is fixedly connected to one of the drive wheels (707). A drive belt (708) is installed between each of the three drive wheels (707) and the three driven wheels (702).

3. The residual gas treatment device for the hydrogen peroxide sterilizer according to claim 1, characterized in that: The preheating component (6) includes a heating shell (601) fixedly connected to the outer wall of the processing shell (1). A heating rod (602) is fixedly connected to the inner wall of the heating shell (601). An electric heater (603) is fixedly connected to the outer wall of the heating shell (601). The heating rod (602) is spirally distributed on the inner wall of the heating shell (601). The output end of the electric heater (603) is fixedly connected to the heating rod (602). An inlet (604) and an outlet (605) are fixedly connected to the outer wall of the heating shell (601).

4. The residual gas treatment device for the hydrogen peroxide sterilizer according to claim 1, characterized in that: A second motor (4081) is fixedly connected to one side of the mounting bracket (408), and the output end of the second motor (4081) is fixedly connected to the locking rod (409).

5. The residual gas treatment device for the hydrogen peroxide sterilizer according to claim 1, characterized in that: Both of the latches (407) have a lock hole (4071) at their upper ends. The pull rod (410) passes through the lock hole (4071) and is slidably connected to it. The pull rod (410) is arc-shaped.

6. The residual gas treatment device for the hydrogen peroxide sterilizer according to claim 2, characterized in that: The rotating rod (701) is located on one side of the baffle (405). When the rotating rod (701) rotates, it causes the ball (704) to abut against the baffle (405).

7. The residual gas treatment device for a hydrogen peroxide sterilizer according to claim 1, characterized in that: The filter box (401) is connected to the air inlet pipe (2). A connecting pipe (4011) is fixedly connected to one side of the filter box (401). One-way valves are installed on the outer walls of the connecting pipe (4011), the air inlet pipe (2), and the exhaust pipe (3).

8. The residual gas treatment device for the hydrogen peroxide sterilizer according to claim 1, characterized in that: The surfaces of the multiple catalyst plates (5) are provided with holes of the same size, and the catalyst plate (5) is a ceramic substrate.

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