A disinfection device and a biosafety cabinet

Abstract

This invention provides a disinfection device and a biosafety cabinet, relating to the field of biological disinfection technology. The disinfection device includes a disinfection section, a first piston structure, and a liquid circulation device. The disinfection section includes a first accommodating cavity, a second accommodating cavity, and a conductive structure for liquid flow within the first and second accommodating cavities. The first accommodating cavity is used to hold waste and disinfectant. The disinfection section is designed to move up and down based on changes in the weight of the contents. The first piston structure is located within the second accommodating cavity and its movement is induced by the movement of the disinfection section. The liquid circulation device is connected to both the first and second accommodating cavities and is used to introduce circulating liquid into the first accommodating cavity. The circulating liquid includes liquid discharged from the second accommodating cavity to the liquid circulation device. The advantages of this invention are: it enables faster and more thorough disinfection of toxic and hazardous waste.

Description

Technical Field

[0001] This invention relates to the field of biological disinfection technology, and more specifically, to a disinfection device and a biosafety cabinet. Background Technology

[0002] In teaching, research, and production in fields such as biomedicine, microbiology, genetic engineering, and bioproducts, it is often necessary to disinfect biological materials and tools used in the process. For example, waste can be rinsed and cleaned with disinfectant to kill harmful substances and thus prevent them from affecting the human body to some extent.

[0003] In related technologies, biosafety cabinets used for handling infectious materials such as primary cultures, bacterial and viral strains, and diagnostic specimens are equipped with disinfection devices. This allows waste to be directly disposed of during the operation of the biosafety cabinet, and the waste is disinfected in the disinfection device with disinfectant. In this way, timely disinfection can, to a certain extent, prevent the volatilization of toxic and harmful substances from waste liquids and solids into the external environment.

[0004] However, current disinfection devices often disinfect waste by rinsing it off when the waste and disinfectant are placed inside, or by immersing the waste in the disinfectant after both are in the device. However, these methods often require a long time to achieve a sufficient disinfection effect, making rapid and thorough disinfection difficult. Furthermore, even after the waste is placed inside the device, there is still a prolonged period of toxic and harmful substances evaporating, which can affect the operator. Summary of the Invention

[0005] The problem addressed by this invention is how to disinfect and treat toxic and hazardous waste more quickly and thoroughly.

[0006] To address the aforementioned problems, the present invention provides a disinfection device, comprising a disinfection section, a first piston structure, and a liquid circulation device. The disinfection section includes a first accommodating cavity, a second accommodating cavity, and a conductive structure for the flow of liquid within the first and second accommodating cavities. The first accommodating cavity is used to hold waste and disinfectant. The disinfection section is used to move up and down based on changes in the weight of the internal objects. The first piston structure is disposed within the second accommodating cavity and is activated by the movement of the disinfection section. The liquid circulation device is connected to both the first and second accommodating cavities and is used to introduce circulating liquid into the first accommodating cavity. The circulating liquid includes liquid discharged from the second accommodating cavity to the liquid circulation device.

[0007] The disinfection device in this embodiment of the invention features a disinfection section that can rise and fall based on changes in the weight of the objects inside. During the rising and falling of the disinfection section, a first piston structure performs a piston action within a second accommodating cavity. A conductive structure connects the two chambers, enabling the reciprocating flow of liquid between the first and second accommodating cavities. When waste and disinfectant are added to the first accommodating cavity, the weight of the objects inside the disinfection section increases. A liquid circulation device receives the liquid flowing into the second accommodating cavity. At this time, because the disinfection section discharges liquid, the weight of the objects inside decreases, and the liquid circulation device can introduce liquid into the first accommodating cavity, causing the weight of the objects inside the disinfection section to rise again. The disinfection unit repeatedly rises and falls due to the continuous changes in the weight of the internal objects. During this process, liquid continuously flows from the first chamber to the second chamber. A liquid circulation device circulates the liquid from the second chamber back to the first chamber, improving liquid flow and thus ensuring more thorough disinfection. Furthermore, the flow of liquid from the second chamber into the first chamber, facilitated by the first piston structure, also flushes the solid waste in the first chamber, ensuring sufficient contact between the disinfectant and the solid waste and removing harmful substances. This rapid and thorough disinfection reduces the residue of harmful substances and effectively minimizes the volatilization of toxic and harmful substances. The separation of the first and second chambers, allowing only liquid flow, also enables a degree of solid-liquid separation of the waste, facilitating subsequent collection and processing.

[0008] Furthermore, the liquid circulation device includes a circulation transfer section and a second piston structure. The circulation transfer section is connected to the first accommodating cavity and the second accommodating cavity respectively. The second piston structure is disposed in the circulation transfer section and is used to form a piston action in the circulation transfer section.

[0009] Furthermore, the liquid circulation device also includes a flushing structure, the circulation transfer unit is connected to the first accommodating cavity through the flushing structure, one end of the flushing structure is connected to the circulation transfer unit, and the other end of the flushing structure is located above the first accommodating cavity.

[0010] Furthermore, the liquid circulation device also includes a disinfectant replenishment device, which is connected to the circulation transfer unit.

[0011] Furthermore, the disinfectant replenishment device includes a squeezing section, a disinfectant storage section, and a third piston structure. The squeezing section is connected to the disinfectant storage section and the circulation transfer section, respectively. The third piston structure is disposed in the squeezing section and is used to form a piston action in the squeezing section to draw out the disinfectant in the disinfectant storage section and squeeze the disinfectant into the circulation transfer section.

[0012] Furthermore, the third piston structure is connected to the disinfection section and is used to move with the rise and fall of the disinfection section. The disinfectant storage section is connected to the first communication point of the squeezing section through the first connecting pipe, and the circulation transfer section is connected to the second communication point of the squeezing section through the second connecting pipe. When the disinfection section moves downward, the third piston structure moves downward synchronously to squeeze the disinfectant in the squeezing section into the circulation transfer section. When the disinfection section moves upward, the third piston structure moves upward synchronously to release the obstruction of the first communication point by the third piston structure.

[0013] Furthermore, the disinfection device also includes an elastic element connected to the disinfection section, which is used to cause the disinfection section to return to its upward position after it moves downward; and / or

[0014] The conductive structure includes a plurality of first through holes arranged side by side and a plurality of second through holes arranged side by side. The axis of the first through holes is perpendicular to the horizontal plane, and the axis of the second through holes is parallel to the horizontal plane.

[0015] Furthermore, the liquid circulation device is connected to the third connection of the second accommodating cavity via a third connecting pipe, and the disinfection section is used to move upward until the third connection is blocked by the first piston structure, or to move downward until the third connection is unblocked by the first piston structure.

[0016] Furthermore, the disinfection device also includes a collection section, which is provided with a first collection trough and a second collection trough. The disinfection section is provided with a bottom plate for opening and closing the first accommodating cavity and the second accommodating cavity. The first collection trough and the second collection trough are respectively located below the first accommodating cavity and the second accommodating cavity.

[0017] The present invention also proposes a biosafety cabinet, including the sterilization device described above.

[0018] The biosafety cabinet in this invention has similar technical effects to the above-mentioned disinfection device, and will not be described in detail here. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the disinfection device in an embodiment of the present invention;

[0020] Figure 2 This is a top view of the disinfection device in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Sectional view along line AA;

[0022] Figure 4This is a schematic diagram of the disinfection section of the disinfection device in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the operating status of the disinfection device in an embodiment of the present invention. Figure 1 ;

[0024] Figure 6 This is a schematic diagram of the operating status of the disinfection device in an embodiment of the present invention. Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the operating status of the disinfection device in an embodiment of the present invention. Figure 3 ;

[0026] Figure 8 This is a schematic diagram of the operating status of the disinfection device in an embodiment of the present invention. Figure 4 ;

[0027] Figure 9 This is a schematic diagram of the operating status of the disinfection device in an embodiment of the present invention. Figure 5 ;

[0028] Figure 10 This is a schematic diagram of the outer shell of the disinfection device in an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of the biosafety cabinet in an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached drawings: 1-Disinfection section; 2-First piston structure; 3-Liquid circulation device; 4-Elastic element; 5-Collection section; 6-Outer shell; 101-First accommodating cavity; 102-Second accommodating cavity; 103-Conducting structure; 104-Base plate; 105-Partition plate; 112-Third connecting point; 113-First through hole; 123-Second through hole; 301-Circulation transfer section; 302-Second piston structure; 303-Flushing structure; 304-Disinfectant replenishment device; 30 5-First connecting pipe; 306-Second connecting pipe; 307-Third connecting pipe; 314-Squeezing section; 324-Disinfectant storage section; 334-Third piston structure; 344-Connecting rod; 3141-First connecting point; 3142-Second connecting point; 501-First collection tank; 502-Second collection tank; 601-Waste inlet; 701-Support frame; 702-Base plate; 703-Fixing plate; 704-Outer plate; 705-Front end plate; 706-Disinfection port. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0032] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0033] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without requiring or implying any actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed. The various embodiments described herein are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For structures, products, etc., disclosed in the embodiments, the descriptions are relatively simple because they correspond to the disclosed parts; relevant details can be found in the method section.

[0034] Reference Figures 1-3As shown, an embodiment of the present invention proposes a disinfection device comprising: a disinfection section 1, a first piston structure 2, and a liquid circulation device 3. The disinfection section 1 includes a first accommodating cavity 101, a second accommodating cavity 102, and a conductive structure 103 for the flow of liquid within the first accommodating cavity 101 and the second accommodating cavity 102. The first accommodating cavity 101 is used to hold waste and disinfectant. The disinfection section 1 is used to move up and down based on changes in the weight of the internal objects. The first piston structure 2 is disposed within the second accommodating cavity 102 to form a piston action due to the movement of the disinfection section 1. The liquid circulation device 3 is connected to both the first accommodating cavity 101 and the second accommodating cavity 102. The liquid circulation device 3 is used to introduce circulating liquid into the first accommodating cavity 101, wherein the circulating liquid includes liquid discharged from the second accommodating cavity 102 to the liquid circulation device 3.

[0035] In this embodiment of the invention, the disinfection device includes a disinfection section 1, into which waste and disinfectant can be placed for disinfection. Specifically, the disinfection section 1 includes a first receiving cavity 101, which is used to place waste and disinfectant. For example, the waste can be a solid or a mixture of solid and liquid. When the disinfection device is applied to a biosafety cabinet, the waste is solid waste such as waste liquid and pipette tips, as well as other mixed biological materials. In the biosafety cabinet, a corresponding opening can be provided to communicate with the first receiving cavity 101, so as to place the waste.

[0036] Meanwhile, the disinfection unit 1 also includes a second accommodating cavity 102 and a conductive structure 103 for supplying liquid flow, specifically, referring to Figure 2 and Figure 3 As shown, the disinfection unit 1 can be separated by a partition 105 to form a first accommodating cavity 101 and a second accommodating cavity arranged on the left and right. A connecting structure 103 is provided below the partition 105, thereby connecting the first accommodating cavity 101 and the second accommodating cavity 102. However, this connecting structure 103 is mainly used for the flow of liquids. It can be understood that the liquid includes disinfectant components, and when waste is placed in the disinfection unit 1 for disinfection, the liquid is a mixed liquid. Thus, through the arrangement of the first accommodating cavity 101, the second accommodating cavity 102, and the connecting structure 103, mutual flow of liquids in the first accommodating cavity 101 and the second accommodating cavity 102 is achieved. When solid waste in the first accommodating cavity 101 cannot enter the second accommodating cavity 102, solid-liquid separation of the disinfected waste is also achieved to a certain extent.

[0037] In addition, in this embodiment of the invention, when waste and disinfectant are placed into the first accommodating cavity 101, the disinfection section 1 is used to move up and down based on the change in the weight of the internal objects. The internal objects of the disinfection section 1 are the mixture of waste and disinfectant after placement. The disinfection device also includes a first piston structure 2, which is disposed within the second accommodating cavity 102. When the disinfection section 1 moves up and down as a whole, the relative position of the second accommodating cavity 102 and the first piston structure 2 changes. At this time, based on the provided conductive structure 103, the first piston structure 2 can draw liquid from the first accommodating cavity 101 and compress liquid in the second accommodating cavity 102, thereby achieving liquid flow. Furthermore, the disinfection section 1 can be connected by elastic elements, so that after disinfectant and waste are placed into the first accommodating cavity 101, the increased weight causes the internal objects of the disinfection section 1 to increase, resulting in an overall downward movement. During the downward movement, if the weight of the internal objects decreases, the elastic force of the elastic element causes the disinfection section 1 to return to its original position.

[0038] By setting the first piston structure 2, and by causing the first piston structure 2 to form a piston action when the disinfection section 1 moves up and down, the fluidity of the liquid containing disinfectant in the first and second accommodating chambers 101 and 102 can be increased to a certain extent. This allows the effective components in the liquid used for disinfection to fully contact the waste, thus making the disinfection more thorough. In addition, when the liquid flows from the second accommodating chamber 102 into the first accommodating chamber 101, under the action of the piston, the liquid can flush and fully contact the solid waste in the first accommodating chamber 101, thus making the disinfection more thorough and reducing the residue of harmful substances.

[0039] If the liquid only circulates within the first and second accommodating chambers 1 of the disinfection unit 1, the weight of the objects inside the disinfection unit 1 may not change, thus preventing vertical movement. Therefore, in this embodiment of the invention, the disinfection device further includes a liquid circulation device 3, which is connected to both the first and second accommodating chambers 101 and 102. This allows the liquid circulation device 3 to receive the liquid flowing out of the second accommodating chamber 102 and guide the circulating liquid, including the liquid, into the first accommodating chamber 101. During this process, the overall weight of the disinfection unit 1 is reduced and then raised again, enabling the disinfection unit 1 to continuously perform vertical reciprocating motion. Simultaneously, the liquid circulation device 3 further increases the fluidity of the liquid within the disinfection unit 1, thereby further improving the disinfection effect.

[0040] In other embodiments, the circulating liquid may include replenished liquid in addition to the liquid discharged from the second accommodating cavity 102, such as disinfectant, to improve the disinfection effect and ensure that the disinfection unit 1 can continuously move up and down.

[0041] The liquid can be drawn from the second receiving cavity 102 to the liquid circulation device 3 in one manner: when the first piston structure 2 moves to draw liquid from the first receiving cavity 101, the liquid circulation device 3 draws liquid from the second receiving cavity 102. Alternatively, based on the flow between the second receiving cavity 102 and the liquid circulation device 3, after the second receiving cavity 102 draws liquid from the first receiving cavity 101 to a certain extent, the liquid flows directly into the liquid circulation device 3. For example, see reference... Figure 3 As shown, the liquid circulation device 3 is connected to the third connection 112 of the second accommodating cavity 102 via the third connecting pipe 307. The disinfection section 1 is used to move upward until the third connection 112 is blocked by the first piston structure 2, or to move downward until the third connection 112 is unblocked by the first piston structure 2. Thus, when the disinfection section 1 descends as a whole, the third connection 112 moves to a position where it is not blocked by the first piston structure 2, allowing the liquid in the second accommodating cavity 102 to flow through the third connection 112 and into the liquid circulation device 3 via the third connecting pipe 307. This reduces the overall weight of the object inside the disinfection section 1 by discharging the liquid, and allows the subsequent liquid circulation device 3 to transfer this portion of the liquid to the first accommodating cavity 101. When the weight of the object inside the disinfection section 1 is reduced and it moves upward, the third connection 112 moves upward simultaneously and is blocked by the first piston structure 2. At this time, the liquid in the liquid circulation device 3 will not flow back into the second accommodating cavity 102 via the third connection 112. The third connecting pipe 307 can be a flexible hose or a folded pipe to avoid interference with the liquid circulation device 3 when the disinfection unit 1 is raised or lowered.

[0042] Therefore, in this embodiment of the invention, the disinfection device, through a disinfection section 1 that can rise and fall based on changes in the weight of the internal objects, allows for piston action within the second accommodating cavity 102 during the rising and falling of the disinfection section 1. The first piston structure 2 connects the two chambers via the connecting structure 103, enabling the reciprocating flow of liquid between the first and second accommodating cavities 101 and 102. When waste and disinfectant are added to the first accommodating cavity 101, the weight of the internal objects in the disinfection section 1 rises. By providing a liquid circulation device 3, the device can receive the liquid flowing into the second accommodating cavity 102. At this time, because the disinfection section 1 discharges liquid, the weight of the internal objects in the disinfection section 1 decreases, and the liquid circulation device 3 can introduce liquid into the first accommodating cavity 101, causing the weight of the internal objects in the disinfection section 1 to rise again. As the weight of the internal objects rises and falls, the disinfection unit 1 repeatedly moves up and down. During this process, liquid continuously flows from the first receiving chamber 101 into the second receiving chamber 102. The liquid circulation device 3 circulates the liquid from the second receiving chamber 102 back into the first receiving chamber 101, improving the fluidity of the liquid and thus making disinfection more thorough. Furthermore, when the liquid from the second receiving chamber 102 flows into the first receiving chamber 101 under the action of the first piston structure 2, it also flushes the solid waste in the first receiving chamber 101 to a certain extent, ensuring sufficient contact between the disinfectant and the solid waste and washing away harmful substances. This allows for rapid and thorough disinfection of the waste, reducing the residue of harmful substances and effectively reducing the volatilization of toxic and harmful substances. The separation of the first receiving chamber 101 and the second receiving chamber 102, allowing only liquid flow, also enables a certain degree of solid-liquid separation of the waste, facilitating subsequent collection and processing.

[0043] In an optional embodiment of the present invention, the disinfection device further includes an elastic element 4, which is connected to the disinfection section 1 and is used to cause the disinfection section 1 to move upward after it moves downward.

[0044] Reference Figure 1 and Figure 3 As shown, in this embodiment of the invention, the upward reset of the disinfection unit 1 after its descent is achieved by the elastic element 4. The elastic element 4 can be specifically a spring rod, which is used to support the installation of the disinfection unit 1. When waste and disinfectant are placed in the first accommodating cavity 101, the spring rod deforms and compresses as the disinfection unit 1 descends. When the liquid is introduced into the liquid circulation device 3 and the weight of the liquid in the disinfection unit 1 decreases, the spring rod deforms and extends, thereby driving the disinfection unit 1 to rise.

[0045] During the process of disinfecting waste in the disinfection device, there is always a certain amount of waste and liquid inside the disinfection section 1. Therefore, when the disinfection section 1 is connected by the elastic member 4, the process of the disinfection section 1 resetting upward as the weight of the internal objects decreases may not be able to reset to the initial position when there is no waste and disinfectant. Ideally, after disinfection is completed and the waste and liquid are cleaned and collected, the disinfection section 1 can reset to the initial position.

[0046] In other embodiments, other mechanical structures can be provided to provide the power for the sterilization unit 1 to reset. For example, an electromechanically controlled telescopic rod can be provided. When the weight of the object inside the sterilization unit 1 is detected to rise to a certain level, the sterilization unit 1 is driven to descend, or the sterilization unit 1 descends automatically. Then, when the weight is detected to decrease to another level, the sterilization unit 1 is driven to rise, thereby causing the sterilization unit 1 to move up and down due to weight changes. For example, Figure 3 In the embodiment of the present invention shown, the first piston structure 2 is arranged in the second accommodating cavity 102. When the disinfection section 1 descends, the first piston structure 2 causes the second accommodating cavity 102 to draw liquid from the first accommodating cavity 101. When the disinfection section 1 rises, the first piston structure 2 causes the liquid in the second accommodating cavity 102 to be squeezed into the first accommodating cavity 101. In other embodiments, the cooperation between the first piston structure 2 and the second accommodating cavity 102 can also be adaptively adjusted based on the rising and falling direction of the disinfection section 1 affected by weight.

[0047] In an optional embodiment of the present invention, the conductive structure 103 includes a plurality of first through holes 113 arranged side by side and a plurality of second through holes 123 arranged side by side, wherein the axis of the first through holes 113 is perpendicular to the horizontal plane and the axis of the second through holes 123 is parallel to the horizontal plane.

[0048] Reference Figure 4 As shown, in this embodiment, the conductive structure 103 includes two plate structures, each with a row of first through holes 113 and a row of second through holes 123. This allows for liquid communication between the first accommodating cavity 101 and the second accommodating cavity 102, and prevents solid waste from entering the second accommodating cavity 102. The axes of the first through holes 113 and the second through holes 123 are perpendicular to each other. Specifically, the axis of the first through hole 113 is perpendicular to the horizontal plane, and the axis of the second through hole 123 is parallel to the horizontal plane. This allows the liquid in the second accommodating cavity 102 to flow back into the first accommodating cavity 1 under the action of the first piston structure 2. When flushing the solid waste in the first accommodating cavity 1, the liquid can flow out in multiple directions, thus achieving a more comprehensive flushing of the solid waste and resulting in better disinfection.

[0049] In an optional embodiment of the present invention, the disinfection device further includes a collection section 5, the collection section 5 having a first collection groove 501 and a second collection groove 502, the disinfection section 1 having a bottom plate 104 for opening and closing the first accommodating cavity 101 and the second accommodating cavity 102, the first collection groove 501 and the second collection groove 502 being located below the first accommodating cavity 101 and the second accommodating cavity 102 respectively.

[0050] Reference Figure 3 As shown, in this embodiment, the disinfection device further includes a collection section 5 for collecting the solid-liquid mixed waste after disinfection by the disinfection section 1. The collection section 5 has two collection troughs: a first collection trough 501 located below the first receiving cavity 101 for collecting solid waste, and a second collection trough 502 located below the second receiving cavity 102 for collecting liquid. The base plate 104 can be slidably connected or hinged to form an openable / closable structure. In this embodiment, a slidably connected base plate 104 is used for opening and closing. The base plate 104 is connected to a drive rod, which controls the opening and closing. After the waste is disinfected, the base plate 104 can be controlled according to actual needs to allow the solid waste and waste liquid to fall into the corresponding first collection trough 501 and second collection trough 502. For example, ... Figure 3 As shown, by pulling the bottom plate 104 from left to right, the second accommodating cavity 102 is opened first, so that the waste liquid in the second accommodating cavity 102 falls into the second collection tank 502. After the waste liquid is collected, the bottom plate 104 is pulled again to open the first accommodating cavity 101, so that the solid waste and any possible small amount of waste liquid in the first accommodating cavity 101 fall into the second collection tank 502, thereby achieving classified collection for subsequent processing.

[0051] In other embodiments, the base plate 104 may also include two parts to control the opening and closing of the first accommodating cavity 101 and the second accommodating cavity 102 respectively, thereby achieving classified recycling.

[0052] In an optional embodiment of the present invention, the liquid circulation device 3 includes a circulation transfer section 301 and a second piston structure 302. The circulation transfer section 301 is connected to the first accommodating cavity 101 and the second accommodating cavity 102 respectively. The second piston structure 302 is disposed in the circulation transfer section 301 and is used to form a piston action in the circulation transfer section 301.

[0053] Reference Figure 3As shown, in this embodiment of the invention, the first accommodating cavity 101 and the second accommodating cavity 102 are connected by the circulation transfer section 301, so that the liquid in the second accommodating cavity 102 flows into the circulation transfer section 301 for transfer. At this time, the weight of the object inside the disinfection section 1 is reduced, and the disinfection section 1 rises. Then, under the action of the second piston structure 302, the liquid is discharged from the circulation transfer section 301 to the first accommodating cavity 101. At this time, the weight of the object inside the disinfection section 1 is increased, and the disinfection section 1 falls again, thereby realizing the continuous operation of the entire disinfection device, fully ensuring the fluidity of the disinfectant and the flushing of solid waste, and thus fully disinfecting.

[0054] In this embodiment, the second piston structure 302 can be driven by a motor or manually. For example, after the liquid volume in the circulation transfer section 301 reaches a certain amount, the second piston structure 302 is controlled to rise, thereby squeezing the internal liquid and causing the liquid to enter the first accommodating cavity 101.

[0055] In an optional embodiment, the liquid in the second accommodating cavity 102 flows into the circulation transfer section 301 from the third connecting pipe 307 through the third communication 112. Then, the first piston structure 2 blocks the third communication 112 so that the circulating liquid in the circulation transfer section 301 does not flow back. The second piston structure 302 in the circulation transfer section 301 can also assist in drawing the liquid in the second accommodating cavity 102 into the circulation transfer section 301, for example, by moving downward to provide a certain degree of negative pressure to help the liquid in the second accommodating cavity 102 flow in.

[0056] In an optional embodiment of the present invention, the liquid circulation device 3 further includes a flushing structure 303, the circulation transfer unit 301 is connected to the first accommodating cavity 101 through the flushing structure 303, one end of the flushing structure 303 is connected to the circulation transfer unit 301, and the other end of the flushing structure 303 is located above the first accommodating cavity 101.

[0057] Reference Figures 1-4 As shown in the embodiment of the present invention, the flushing structure 303 is a tube structure. One end of the tube structure is connected to the circulation transfer part 301, and the other end is located above the first accommodating cavity 101. Thus, during the process of the second piston structure 302 squeezing the circulating liquid into the first accommodating cavity 101 by the circulation transfer part 301, the circulating liquid flows through the tube structure to the top of the first accommodating cavity 101 and falls down. Based on gravity, it flushes the waste in the first accommodating cavity 101, thereby improving the disinfection effect.

[0058] In other embodiments, the flushing structure 303 can adopt other structural forms, such as a structure that can divert the circulating liquid. After the circulating liquid is diverted, it flushes the waste based on gravity, so that the harmful substances attached to the solid waste can be flushed away, and it can also come into more full contact with the harmful substances, thereby further improving the disinfection effect.

[0059] In an optional embodiment of the present invention, the liquid circulation device 3 further includes a disinfectant replenishment device 304, which is connected to the circulation transfer unit 301.

[0060] In the above embodiment, the circulating liquid introduced into the first accommodating cavity 101 of the disinfection unit 1 by the liquid circulation device 3 includes liquid discharged from the second accommodating cavity 102. This achieves a reduction in the weight and an increase in the weight of the disinfection unit 1, thereby ensuring that the disinfection unit 1 can continuously perform lifting and lowering movements. In this embodiment, referring to... Figure 2 As shown, the circulating liquid introduced into the first accommodating cavity 101 by the liquid circulation device 3 also includes disinfectant replenished from the disinfectant replenishment device 304. That is, the circulating liquid is a mixture of the liquid discharged from the second accommodating cavity 102 and the disinfectant replenished from the disinfectant replenishment device 304. In this way, on the one hand, by replenishing the disinfectant, the weight of the objects inside the disinfection unit 1 can always be relatively large in various waste scenarios. At this time, the greater weight allows the disinfection unit 1 to have a larger range of motion, such as a larger descent, and then a larger range when rising due to the reduced weight. At this time, the flushing force of the liquid squeezed from the second accommodating cavity 102 into the first accommodating cavity 101 on the waste and the flushing force of the liquid flowing out from the above-mentioned flushing structure 303 on the waste will be greater, thus bringing a better disinfection effect. On the other hand, the replenishment of disinfectant can also ensure the lifting and lowering movement of the disinfection unit 1. Furthermore, more disinfectant can also make disinfection more thorough and faster, and there is no need for multiple manual replenishments, making it convenient for operators to use.

[0061] In an optional embodiment of the present invention, the disinfectant replenishment device 304 includes a squeezing part 314, a disinfectant storage part 324, and a third piston structure 334. The squeezing part 314 is connected to the disinfectant storage part 324 and the circulation transfer part 301, respectively. The third piston structure 334 is disposed in the squeezing part 314 and is used to form a piston action in the squeezing part 314 to draw out the disinfectant in the disinfectant storage part 324 and squeeze the disinfectant into the circulation transfer part 301.

[0062] Reference Figure 3As shown, in this embodiment, for the disinfectant replenishment device 304, a third piston structure 334 is used to squeeze the disinfectant in the squeezing section 314, so that the disinfectant flows into the circulation transfer section 301. The squeezing section 314 is connected to the disinfectant storage section 324, so that the disinfectant storage section 324 can replenish the disinfectant in the squeezing section 314. That is, the replenishment of the disinfectant in the squeezing section 314 is also realized according to the action of the third piston structure 334 in the squeezing section 314. That is, when the piston moves, the disinfectant in the disinfectant storage section 324 is drawn into the squeezing section 314, thereby controlling the amount of disinfectant replenished each time.

[0063] The third piston structure 334 and the extrusion part 314 form a piston action. This piston action can be formed by the movement of the third piston structure 334 or the extrusion part 314. For example, the third piston structure 334 moves within the extrusion part 314 to form a piston.

[0064] In an optional embodiment of the present invention, the third piston structure 334 is connected to the disinfection section 1 and is used to move with the rise and fall of the disinfection section 1. The disinfectant storage section 324 is connected to the first communication portion 3141 of the squeezing section 314 through the first connecting pipe 305. The circulation transfer section 301 is connected to the second communication portion 3142 of the squeezing section 314 through the second connecting pipe 306. When the disinfection section 1 moves downward, the third piston structure 334 moves downward synchronously to squeeze the disinfectant in the squeezing section 314 into the circulation transfer section 301. When the disinfection section 1 moves upward, the third piston structure 334 moves upward synchronously to release the obstruction of the first communication portion 3141 by the third piston structure 334.

[0065] Reference Figure 1 and 2As shown, in this embodiment of the invention, the third piston structure 334 is connected to the disinfection unit 1 via a connecting rod 344, so that it can move synchronously with the disinfection unit 1. During the descent of the disinfection unit 1, the weight of the object inside the disinfection unit 1 decreases due to the action of the first piston structure 2 and the circulation transfer unit 301. Subsequently, it is necessary to replenish the circulating liquid in the first accommodating cavity 101. At this time, the disinfectant replenishment device 304 also replenishes the disinfectant liquid into the circulation transfer unit 301. At this time, the disinfection unit 1 synchronously drives the third piston structure 334 to move downward to squeeze the disinfectant liquid in the squeezing part 314, and replenishes the disinfectant liquid into the circulation transfer unit 301 through the second connecting pipe 306 via the second connecting point 3142 at a lower position. At this time, the first connecting point 3141 at a higher position is controlled by the third piston structure 334. The plug structure 334 blocks, or in other words, the third piston structure 334 does not create negative pressure in the squeezing section 314 at this time, so that the liquid in the disinfectant storage section 324 cannot flow into the squeezing section from the first connection point 3141, which is higher than the second connection point 3141, through the first connecting pipe 305. Subsequently, the disinfection section 1 descends to a certain extent, so that some of the liquid inside the disinfection section 1 is introduced into the circulation transfer section 301. After the weight is reduced, the disinfection section 1 rises, and then drives the third piston structure 334 to move upward, and then it is positioned above the first connection point 3141, thus removing the blockage. This allows the disinfectant in the disinfectant storage section 324 to flow into the squeezing section 314, thereby replenishing the disinfectant in the squeezing section 314 for replenishing the disinfectant in the circulation transfer section 301 in the next cycle. The second piston structure 302 in the circulation transfer section 301 moves upward, introducing the circulating liquid into the first receiving cavity 101, so that the disinfection section 1 descends again, thus forming a reciprocating motion.

[0066] In the above embodiments, the height difference between the first connecting portion 3141 and the second connecting portion 3142 can be set according to actual conditions to control the amount of disinfectant entering the squeezing section 314 and the circulation transfer section 301. Furthermore, the height difference between the two is mainly used to ensure that when the disinfection section 1 descends and drives the third piston structure 334 to move, it can cleverly achieve the export of disinfectant from the disinfectant storage section 324 and the introduction of disinfectant into the circulation transfer section 301. Also, when the squeezing section 314 descends again, the disinfectant is discharged through the first connecting pipe 305 and the first connecting portion 3142. 141 recovers a portion of the disinfectant, ensuring that the amount of disinfectant squeezed into the circulation transfer unit 301 each time is approximately the amount limited by the height difference, thus maintaining stability. This process does not require manual control. In other embodiments, the height difference limitation can be eliminated based on actual conditions to achieve the same replenishment of disinfectant to the circulation transfer unit 301. For example, the disinfectant storage unit 324 can be controlled to be closed or opened to determine whether or not the disinfectant in the squeezing unit is replenished. In this case, the third piston structure 334 can be used only as a squeezing structure for replenishing disinfectant to the circulation transfer unit 301.

[0067] In other embodiments, the third piston structure 334 can also be driven by a drive mechanism or manually to achieve the effect of replenishing disinfectant. This will not be elaborated further here. In this embodiment of the invention, the arrangement of the third piston structure 334 moving in tandem with the disinfection unit 1 can save power and manpower to a certain extent.

[0068] Reference Figure 10 As shown, in an optional embodiment of the present invention, the disinfection device may further include a housing 6, which is provided with a waste inlet 601. The disinfection part 1, the first piston structure 2, the liquid circulation device 3, the elastic element 4, and the collection part 5 of the above-mentioned disinfection device are all located inside the housing 6. The first accommodating cavity 101 of the disinfection part 1 is connected to the waste inlet 601. Specifically, the waste inlet 601 is located above the first accommodating cavity 101, so that disinfectant and waste can be placed into the first accommodating cavity 101 through the waste inlet 601. During the disinfection process, the volatilization of toxic substances can be prevented as much as possible based on the shielding of the housing 6, thereby protecting the human body.

[0069] The disinfection device in this embodiment of the invention can be applied to biosafety cabinets. For example, a separate area can be set up in the cabinet to install the disinfection device for waste disposal and disinfection, or a disinfection port can be opened on the cabinet and connected to the waste inlet 601 of the disinfection device and the first receiving cavity 101 for waste disposal and disinfection. The disinfection device allows operators to directly dispose of and thoroughly disinfect waste in the biosafety cabinet after operation. The disinfected waste can undergo solid-liquid separation for rapid collection and subsequent processing, thereby avoiding the residue of harmful substances and better ensuring the safety of operators.

[0070] Reference Figure 11 As shown, the present invention also proposes a biosafety cabinet, including the sterilization device described above.

[0071] In an optional embodiment, the biosafety cabinet further includes an openable cabinet body connected to the disinfection device. A disinfection port 706 is provided at the bottom plate 702 of the openable cabinet body. The disinfection port 706 communicates with the waste inlet 601 of the outer shell 6 of the disinfection device, and further communicates with the first receiving cavity 101 of the disinfection section 1. This allows operators to work within the openable cabinet body and dispose of waste through the disinfection port 706 to the waste inlet 601 of the disinfection device after work. This improves operational convenience and allows for the disposal and disinfection of waste anytime and anywhere, avoiding any impact on the health of the operators.

[0072] The openable cabinet includes a support frame 701, an outer panel 704, and a front panel 705. The outer panel 704 encloses the operating space, and the front panel 705 is a movable panel that is hinged or movably connected to the top panel of the openable cabinet to facilitate operation by personnel inside the operating space after opening. The support frame 701 is connected to the bottom plate 702 to support the main body of the openable cabinet. In addition, it may also include a fixing plate 703, which is connected to the outer shell 6 of the disinfection device to support and fix the entire disinfection device.

[0073] In addition, the biosafety cabinet in this embodiment of the invention has similar technical effects to the disinfection device in the above embodiments, which will not be described in detail here.

[0074] Reference Figures 5-9 The diagram illustrates the structural changes of the disinfection device during a disinfection process in a specific biosafety cabinet application, according to an embodiment of the present invention. Solid arrows indicate the direction of liquid flow, while hollow arrows indicate the direction of movement of the corresponding solid structures. The relevant operating procedures are described below in conjunction with the diagram.

[0075] Before sampling, disinfectant is poured into the disinfection port 706 of the biosafety cabinet, and then the sampling operation begins. During sampling, discarded sampling needles, discarded pipette tips, and other waste are added to the disinfection port 706. Both the waste and the aforementioned disinfectant enter the waste inlet 601 through the disinfection port 706, and then enter the first receiving cavity 101 of the disinfection section 1 through the waste inlet 601. As waste is continuously added, the overall weight of the disinfection section 1 increases, and the disinfection section 1 descends. At this time, the elastic element 4 is compressed, and the first piston structure 2 remains stationary. After the disinfection section 1 descends, the overall state of the disinfection device is divided into the following stages:

[0076] Phase 1, referring to Figure 5 As shown, the descent of the disinfection section 1 causes the third piston structure 334 to descend, which in turn squeezes the disinfectant in the squeezing section 314. This causes the pre-filled disinfectant in the squeezing section 314 to enter the circulation transfer section 301 through the second connecting pipe 306. At the same time, due to the descent of the disinfection section 1, the first piston structure 2 causes the liquid in the first accommodating cavity 101 on the right side of the disinfection section 1 to enter the second accommodating cavity 102 on the left side of the disinfection section 1. At this time, the first piston structure 2 blocks the third connecting pipe 307 of the disinfection section 1 and the circulation transfer section 301, and the third piston structure 334 also blocks the first connecting pipe 305.

[0077] The second stage, referring to Figure 6As shown, after the disinfection section 1 descends for a period of time, the first piston structure 2 no longer blocks the third connecting pipe 307 between the disinfection section 1 and the circulation transfer section 301, so that the disinfection section 1 and the circulation transfer section 301 are connected. At the same time, the liquid below the first piston structure 2 enters the circulation transfer section 301 through the third connecting pipe 307. The third piston structure 334 continues to squeeze the disinfectant in the squeezing section 314, so that the disinfectant in the squeezing section 314 enters the circulation transfer section 301.

[0078] The third stage, referring to Figure 7 As shown, due to the continuous discharge of liquid from the second accommodating cavity 102, the weight of the internal objects in the disinfection section 1 has become smaller, and the elastic element 4 can deform and reset, causing the disinfection section 1 to rise. At this time, the liquid below the first piston structure 2 continues to flow to the circulation transfer section 301, and some liquid also flows out from the second accommodating cavity 102 into the first accommodating cavity 101 to flush away the waste. Similarly, the third piston structure 334 moves upward.

[0079] The fourth stage, referring to Figure 8 As shown, after the disinfection section 1 rises for a period of time, the first piston structure 2 blocks the third connecting pipe 307 between the disinfection section 1 and the circulation transfer section 301. The third piston structure 334 moves upward, adsorbing the air in the circulation transfer section 301 and entering the squeezing section 314. Due to the gap left by the third piston structure, the second piston structure 302 is then controlled to rise, pushing the circulating liquid above the second piston structure 302. When the circulating liquid passes through the connection between the circulation transfer section 301 and the second connecting pipe 306, since the squeezing section 314 is only open at one end at this time, the circulating liquid will be squeezed by the air and cannot flow back into the squeezing section 314. Then the second piston structure 302 continues to rise.

[0080] Fifth stage, refer to Figure 9 As shown, after the second piston structure 302 rises to a certain height, the squeezed circulating liquid falls from above into the first accommodating cavity 101 through the outlet of the flushing structure 303, impacting the waste in the first accommodating cavity 101 and causing harmful substances attached to the solid waste to fall off, thus optimizing the disinfection effect. At the same time, after the disinfection section 1 rises to a certain height, the third piston structure 334 leaves the squeezing section 314, so that it can no longer block the first connecting part 3141. The disinfectant in the disinfectant storage section 324 enters the squeezing section 314, completing the refilling of the disinfectant.

[0081] In the sixth stage, after the disinfection section 1 descends again, the third piston structure 334 descends to compress the air in the compression section 314, thereby returning the excess disinfectant to the disinfectant storage section 324. Then, the third piston structure 334 returns to its original position. Figure 5 At the position shown, the second piston structure 302 is driven to descend.

[0082] Based on the circulation transfer unit 301 replenishing the first accommodating cavity 101 with circulating liquid, the weight of the objects inside the disinfection unit increases, and the above process is repeated to achieve a reciprocating disinfection process with high fluidity and targeted flushing of solid waste in the waste, thereby making the disinfection of waste more thorough and faster to achieve a better disinfection effect.

[0083] After disinfection, the drive rod that controls the opening and closing of the bottom plate 104 of the disinfection unit 1 is stretched by the drive mechanism to open the bottom plate 104, so that the bottom of the second accommodating cavity 102 is opened. Then, the waste liquid in the second accommodating cavity 102 flows into the second collection tank 502 of the collection unit 5 through the opening, realizing the collection of waste liquid. Then, when the drive rod drives the bottom plate 104 to move to the position of opening the first accommodating cavity 1, the solid waste falls into the first collection tank 501 of the collection unit 5, completing the separation and collection.

[0084] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A disinfecting device, characterized in that, The device comprises a disinfecting part (1), a first piston structure (2) and a liquid circulating device (3). The disinfecting part (1) comprises a first accommodating cavity (101), a second accommodating cavity (102) and a through structure (103) for the liquid flow in the first and second accommodating cavities (101, 102). The first accommodating cavity (101) is used for placing waste and disinfecting liquid. The disinfecting part (1) is used for lifting and lowering based on the weight change of the internal objects. The first piston structure (2) is arranged in the second accommodating cavity (102) to form piston action by the lifting and lowering of the disinfecting part (1). The liquid circulating device (3) is communicated with the first and second accommodating cavities (101, 102) respectively. The liquid circulating device (3) is used for introducing circulating liquid into the first accommodating cavity (101). The circulating liquid comprises the liquid introduced from the second accommodating cavity (102) to the liquid circulating device (3). The device further comprises an elastic member (4) connected with the disinfecting part (1) to make the disinfecting part (1) upwardly reset after the disinfecting part (1) is downwardly moved; and / or The through structure (103) comprises a plurality of first through holes (113) and a plurality of second through holes (123) arranged side by side. The axis of the first through holes (113) is perpendicular to the horizontal plane. The axis of the second through holes (123) is parallel to the horizontal plane.

2. The sanitizing device of claim 1, wherein, The liquid circulating device (3) comprises a circulating transfer part (301) and a second piston structure (302). The circulating transfer part (301) is communicated with the first and second accommodating cavities (101, 102) respectively. The second piston structure (302) is arranged in the circulating transfer part (301) to form piston action in the circulating transfer part (301).

3. The sanitizing device of claim 2, wherein, The liquid circulating device (3) further comprises a flushing structure (303). The circulating transfer part (301) is communicated with the first accommodating cavity (101) through the flushing structure (303). One end of the flushing structure (303) is connected with the circulating transfer part (301). The other end of the flushing structure (303) is located above the first accommodating cavity (101).

4. The sanitizing device of claim 2, wherein, The liquid circulating device (3) further comprises a disinfecting liquid supplement device (304) communicated with the circulating transfer part (301).

5. The sanitizing device of claim 4, wherein, The disinfecting liquid supplement device (304) comprises a squeezing part (314), a disinfecting liquid storage part (324) and a third piston structure (334). The squeezing part (314) is communicated with the disinfecting liquid storage part (324) and the circulating transfer part (301) respectively. The third piston structure (334) is arranged in the squeezing part (314) to form piston action in the squeezing part (314) to extract the disinfecting liquid in the disinfecting liquid storage part (324) and squeeze the disinfecting liquid into the circulating transfer part (301).

6. The sanitizing device of claim 5, wherein, The third piston structure (334) is connected with the disinfecting part (1) and moves with the disinfecting part (1), the disinfectant storage part (324) is connected with the first communication position (3141) of the squeezing part (314) through the first connecting pipe (305), the circulating transfer part (301) is connected with the second communication position (3142) of the squeezing part (314) through the second connecting pipe (306), when the disinfecting part (1) moves downward, the third piston structure (334) moves downward synchronously to squeeze the disinfectant in the squeezing part (314) into the circulating transfer part (301), when the disinfecting part (1) moves upward, the third piston structure (334) moves upward synchronously to remove the shielding of the first communication position (314) by the third piston structure (334).

7. The sanitization device of any one of claims 1-6, wherein, The liquid circulating device (3) is connected with the third communication position (112) of the second accommodating cavity (102) through the third connecting pipe (307), the disinfecting part (1) is used to move upward to shield the third communication position (112) by the first piston structure (2), or move downward to remove the shielding of the third communication position (112) by the first piston structure (2).

8. The sanitization device of any one of claims 1-6, wherein, The collecting part (5) is further included, the collecting part (5) is provided with a first collecting groove (501) and a second collecting groove (502), the disinfecting part (1) is provided with a bottom plate (104) for opening and closing the first accommodating cavity (101) and the second accommodating cavity (102), the first collecting groove (501) and the second collecting groove (502) are respectively located below the first accommodating cavity (101) and the second accommodating cavity (102).

9. A biological safety cabinet, characterized by, The disinfecting device comprises the disinfecting device according to any one of claims 1-8.

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