Biological safety cabinet with sterilization structure

Abstract

The utility model discloses a biosafety cabinet with a sterilization structure, which comprises a support frame, and the middle part of the support frame is fixedly connected with a containing plate. According to the biological safety cabinet with the sterilization structure, through the arrangement of the liquid storage tank, the heating area, the gasification assembly and the gas conveying pipe, when the biological safety cabinet is sterilized, a sealing glass door is closed, a water pump is started to convey a hydrogen peroxide medium in the liquid storage tank to the heating area, a temperature controller sets a threshold value of a boiling point, and a heating resistance wire heats the hydrogen peroxide medium; the hydrogen peroxide medium is gasified, the gas is discharged into the cabinet body through the input pipe, the hydrogen peroxide is a chemical substance with strong oxidability and can destroy the structure and the function of microbial cells in the air to cause death of the microbial cells, so that the purpose of sterilization is achieved, and the gas is uniformly distributed in the cabinet body and permeates into various surfaces and gaps of equipment; comprising vessels, tools, equipment and the like, deep sterilization is carried out, and the sterilization comprehensiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological safety cabinets, in particular to a biological safety cabinet with a sterilization structure. Background Art

[0002] A biological safety cabinet is a box-type air purification negative pressure safety device that can prevent the aerosol escape of certain dangerous or unknown biological particles during experimental operations. It is widely used in scientific research, teaching, clinical testing and production in the fields of microbiology, biomedicine, genetic engineering, and biological products. It is the most basic safety protection equipment in the first-level protection barrier of laboratory biosafety. In the process of using a biological safety cabinet for experimental operations, the internal sterilization of the biological safety cabinet needs to be carried out after a period of use.

[0003] Existing sterilization methods for biological safety cabinets generally use methods such as laser irradiation, which cannot sterilize the gaps inside the safety cabinet and are not convenient for deep sterilization.

[0004] After searching the existing patents: a biological safety cabinet with a sterilization function (publication number: CN218131961U), the utility model is a biological safety cabinet with a sterilization function, including a cabinet body, a moving mechanism is arranged at the lower side of the cabinet body, the moving mechanism includes a base, a first motor is arranged on the upper side of the base, a first threaded rod is rotatably arranged at the bottom of the cabinet body, the first threaded rod is threadedly connected with a threaded sleeve, four groups of moving components are arranged between the threaded sleeve and the base, the cabinet body is provided with a disinfection mechanism, and the cabinet body is provided with a cleaning mechanism; the biological safety cabinet is moved and fixed by the moving mechanism, so that the biological safety cabinet is more convenient to use, and the disinfection mechanism can quickly and effectively disinfect each cabinet body, effectively improving the disinfection and sterilization efficiency of the cabinet body, avoiding the traditional manual wiping disinfection which is time-consuming and easy to omit resulting in poor disinfection effect.

[0005] Although the above patent achieves the goal of disinfecting the safety cabinet, the operator's hands will feel tired during long-term inspection work, and the hands or wrists are not supported, which is not conducive to improving the comfort and stability of the operator.

[0006] Therefore, it is necessary to invent a biosafety cabinet with a sterilization structure to solve the above problems. Utility Model Content

[0007] The technical problem to be solved by the utility model is as follows: when an operator performs a long-term inspection operation, his hands will feel tired, and the hands or wrists have no support, which is not convenient for improving the comfort and stability of the operator.

[0008] The purpose of the utility model can be achieved through the following technical solutions: A biological safety cabinet with a sterilization structure, comprising a support frame, a holding plate fixedly connected to the middle of the support frame, two holding grooves are provided on the surface of the holding plate, a liquid storage tank is clamped inside one of the holding grooves, a heating zone is clamped inside the other holding groove, a gasification component is fixedly connected to the bottom surface of the heating zone, a water pump is fixedly connected to the middle of the holding plate, a cabinet is fixedly connected to the top surface of the support frame, an air inlet is provided at the edge of the inner bottom wall of the cabinet, a groove is provided on the inner bottom surface of the cabinet, an operating table is clamped inside the groove, a sliding groove is provided on the edge of the surface of the operating table, a sliding rod is fixedly connected inside the sliding groove, two moving blocks are sleeved on the surface of the sliding rod, a lifting component is fixedly connected to the top surface of the moving block, a support tube is fixedly connected to the top surface of the lifting component, an air supply component is fixedly connected to the inner top surface of the support tube, a support ring is fixedly connected to the inner wall of the cabinet, and a sealed glass door is clamped on the front of the cabinet.

[0009] As a further solution of the utility model: the liquid storage tank contains hydrogen peroxide medium, and a connection port is opened on one side of the liquid storage tank. The hydrogen peroxide medium is a highly oxidizing chemical substance that can kill microorganisms such as bacteria, viruses, fungi and spores under certain conditions.

[0010] As a further solution of the utility model: an input interface is fixedly connected to one side of the heating zone, an air outlet is fixedly connected to the surface of the heating zone, a gas pipe is threadedly connected to the surface of the gas outlet, and the gas pipe is connected to the air inlet of the cabinet, so that the gas pipe can deliver the gasified hydrogen peroxide gas to the inside of the cabinet.

[0011] As a further solution of the utility model: the input end of the water pump is connected to the connection port on one side of the liquid storage tank, and the output end of the water pump is connected to the input interface on one side of the heating zone. The water pump can easily transport the hydrogen peroxide medium to the heating zone to avoid waste.

[0012] As a further solution of the utility model: the air supply assembly includes a spring fixedly connected to the top surface of the support cylinder, the bottom end of the spring is fixedly connected to a blocking rod, the surface of the blocking rod is fixedly connected to a lifting rod, the blocking rod is adapted to the through hole, the blocking rod facilitates air supply and blocking of the through hole, and fixes the height.

[0013] As a further solution of the utility model: the lighting assembly includes a lampshade fixedly connected to the inner wall of the cabinet, and a lighting lamp is fixedly connected to the interior of the lampshade, so that the lighting lamp is convenient for providing a light source.

[0014] As a further solution of the utility model: universal wheels are fixedly connected to the four sides of the bottom surface of the support frame, and brake pads are fixedly installed inside the universal wheels, so that the universal wheels are easy to move.

[0015] As a further solution of the utility model: the gasification component includes a heating resistance wire fixedly connected to the bottom surface of the heating zone, and one side of the heating resistance wire is electrically connected to a temperature controller through a power line, and the temperature controller facilitates temperature control.

[0016] As a further solution of the utility model: the lifting assembly includes an outer sleeve fixedly connected to the top surface of the moving block, the inner bottom surface of the outer sleeve is fixedly connected to a piston rod, the surface of the piston rod is sleeved with an inner cylinder, the top end of the piston rod is fixedly connected to a piston block, the surface of the inner cylinder is provided with a through hole, and the piston block plays an air intake sliding role.

[0017] Beneficial effects of the utility model:

[0018] 1. Through the setting of sliding rod, moving block, lifting assembly, air supply assembly and support ring, according to the height habit of the operator, push the lifting rod downward, the spring presses down, drives the blocking rod away from the through hole, and allows the gas to enter. Between the outer sleeve and the inner sleeve, the piston block will divide the space into two parts, one side is high pressure and the other side is low pressure. The air pressure shrinks, which will cause the inner sleeve to shrink downward. Since the force is mutual, the inner sleeve will move upward in turn. The hand applies gravity downward to determine the position, release the lifting rod, the spring will retract the blocking rod and block the through hole. The air pressure difference fixes it in the current position. The operator's hand is placed on the support ring, which avoids the operator from performing detection operations for a long time and generating fatigue, improves the operator's detection comfort and stability, and is also adapted to the operating height habits of different operators.

[0019] 2. Through the setting of liquid storage tank, heating zone, gasification component and gas pipe, when sterilizing in the biological safety cabinet, close the sealed glass door, start the water pump to transport the hydrogen peroxide medium in the liquid storage tank to the heating zone, set the boiling point threshold of the temperature controller, and heat it with the heating resistor to gasify the hydrogen peroxide medium. The gas is discharged into the cabinet through the input pipe. Because hydrogen peroxide is a highly oxidizing chemical substance, it can destroy the structure and function of microbial cells in the air, causing their death, and effectively inactivate various types of microorganisms such as bacteria, fungi, viruses, etc., thereby achieving the purpose of sterilization. The gas is evenly distributed in the cabinet and penetrates into the gaps of various surfaces and equipment, including utensils, tools, equipment, etc., for deep sterilization and improving the comprehensiveness of sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the lighting assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the gasification component of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the lifting component of the utility model.

[0025] In the figure: 1. support frame; 2. holding plate; 3. liquid storage tank; 4. heating zone; 5. gasification component; 501. heating resistor wire; 502. temperature controller; 6. water pump; 7. cabinet; 8. operating table; 9. sliding rod; 10. moving block; 11. lifting component; 1101. outer sleeve; 1102. piston rod; 1103. inner sleeve; 1104. piston block; 12. supporting cylinder; 13. air supply component; 1301. spring; 1302. blocking rod; 1303. lifting rod; 14. supporting ring; 15. lighting component; 1501. lampshade; 1502. lighting lamp; 16. air supply pipe; 17. universal wheel; 18. sealed glass door. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-4As shown, a biological safety cabinet with a sterilization structure includes a support frame 1, a holding plate 2 is fixedly connected to the middle of the support frame 1, two holding slots are arranged on the surface of the holding plate 2, a liquid storage tank 3 is clamped inside one of the holding slots, a heating zone 4 is clamped inside the other holding slot, a gasification component 5 is fixedly connected to the bottom surface of the heating zone 4, a water pump 6 is fixedly connected to the middle of the holding plate 2, through the arrangement of the liquid storage tank 3, the heating zone 4, the gasification component 5 and the gas transmission pipe 16, when the biological safety cabinet needs to be sterilized or after use, the sealed glass door 18 is closed, the water pump 6 is started to transport the hydrogen peroxide medium in the liquid storage tank 3 to the heating zone 4, an external power supply is connected, the temperature controller 502 is set to a threshold value that can make the hydrogen peroxide medium reach the boiling point, and the heating The resistance wire 501 heats the heating zone 4, so that the hydrogen peroxide medium is gasified, and the gas is discharged into the interior of the cabinet 7 through the gas pipe 16. Since hydrogen peroxide is a highly oxidizing chemical substance, it can destroy the structure and function of microbial cells in the air, causing their death, and effectively inactivate various types of microorganisms such as bacteria, fungi, and viruses, thereby achieving the purpose of sterilization. The hydrogen peroxide vapor will be evenly distributed in the cabinet 7 and penetrate into the gaps of various surfaces and equipment, including utensils, tools, equipment, etc., to perform deep sterilization and improve the comprehensiveness of sterilization. The top surface of the support frame 1 is fixedly connected to the cabinet 7, and an air inlet is provided at the edge of the inner bottom wall of the cabinet 7. A groove is provided on the inner bottom surface of the cabinet 7, and an operating table 8 is clamped inside the groove. A sliding groove is provided on the edge of the surface of the operating table 8, and a sliding rod 9 is fixedly connected inside the sliding groove. Two moving blocks 10 are sleeved on the surface of the sliding rod 9, and a lifting assembly 11 is fixedly connected to the top surface of the moving block 10, and a supporting cylinder 12 is fixedly connected to the top surface of the lifting assembly 11, and a gas supply assembly 13 is fixedly connected to the inner top surface of the supporting cylinder 12, and a supporting ring 14 is fixedly connected to the top surface of the supporting cylinder 12. Through the arrangement of the sliding rod 9, the moving block 10, the lifting assembly 11, the gas supply assembly 13 and the supporting ring 14, according to the height habit of the operator, the lifting rod 1303 is pushed downward, and the spring 1301 is pressed downward to drive the blocking rod 1302 away from the through hole to allow gas to enter, and the piston block 1101 is between the outer sleeve 1101 and the inner sleeve 1103. 4 will divide the space into two parts, one side is high pressure and the other side is low pressure. The air pressure shrinks, which will cause the inner cylinder 1103 to shrink downward. Since the force is mutual, the inner cylinder 1103 will move upward in turn. The hand applies gravity downward to determine the position, releases the lifting rod 1303, and the spring 1301 will retract the blocking rod 1302 to block the through hole. The air pressure difference fixes it in the current position. The operator's hand is placed on the support ring 14, which avoids the operator from performing the detection operation for a long time and generating fatigue, improves the operator's detection comfort and stability, and is also suitable for different operators' operating height habits. The inner wall of the cabinet 7 is fixedly connected with a lighting assembly 15, and the front of the cabinet 7 is clamped with a sealed glass door 18;

[0028] like Figure 3 As shown, the liquid storage tank 3 contains hydrogen peroxide medium, and a connecting port is provided on one side of the liquid storage tank 3. Through the setting of the liquid storage tank 3, the hydrogen peroxide medium is contained;

[0029] like Figure 3 As shown, an input interface is fixedly connected to one side of the heating area 4, an air outlet is fixedly connected to the surface of the heating area 4, and an air delivery pipe 16 is threadedly connected to the surface of the air outlet. The air delivery pipe 16 is connected to the air inlet of the cabinet 7. The gasified hydrogen peroxide is transported through the setting of the air delivery pipe 16;

[0030] like Figure 3 As shown, the input end of the water pump 6 is connected to the connection port on one side of the liquid storage tank 3, and the output end of the water pump 6 is connected to the input interface on one side of the heating zone 4. The water pump 6 is provided to transport the hydrogen peroxide medium.

[0031] like Figure 4 As shown, the air supply assembly 13 includes a spring 1301 fixedly connected to the top surface of the support tube 12, the bottom end of the spring 1301 is fixedly connected to a blocking rod 1302, the surface of the blocking rod 1302 is fixedly connected to a lifting rod 1303, the blocking rod 1302 is adapted to the through hole, and the air supply assembly 13 is arranged to play a lifting role;

[0032] like Figure 2 As shown, the lighting assembly 15 includes a lampshade 1501 fixedly connected to the inner wall of the cabinet 7, and a lighting lamp 1502 is fixedly connected inside the lampshade 1501. Through the arrangement of the lighting assembly 15, the lighting function is achieved;

[0033] like Figure 1 As shown, universal wheels 17 are fixedly connected to the four sides of the bottom surface of the support frame 1, and brake pads are fixedly installed inside the universal wheels 17. The arrangement of the universal wheels 17 facilitates movement.

[0034] like Figure 3 As shown, the gasification component 5 includes a heating resistance wire 501 fixedly connected to the bottom surface of the heating zone 4, and one side of the heating resistance wire 501 is electrically connected to a temperature controller 502 through a power line. Through the setting of the gasification component 5, the hydrogen peroxide medium is heated and gasified.

[0035] like Figure 4 As shown, the lifting component 11 includes an outer sleeve 1101 fixedly connected to the top surface of the moving block 10, the inner bottom surface of the outer sleeve 1101 is fixedly connected to the piston rod 1102, the surface of the piston rod 1102 is sleeved with an inner cylinder 1103, the top of the piston rod 1102 is fixedly connected to the piston block 1104, and the surface of the inner cylinder 1103 is provided with a through hole. Through the setting of the lifting component 11, the height can be adjusted.

[0036] The working principle of the utility model is as follows: according to the height habit of the operator, the lifting rod 1303 is pushed downward, and the spring 1301 is pressed downward, driving the blocking rod 1302 away from the through hole to allow gas to enter. The piston block 1104 will divide the space between the outer sleeve 1101 and the inner sleeve 1103 into two parts, one for high pressure and the other for low pressure. The air pressure shrinks, which will cause the inner sleeve 1103 to shrink downward. Since the force is mutual, the inner sleeve 1103 will move upward in turn. The hand applies gravity downward to determine the position, and the lifting rod 1303 is released. The spring 1301 will retract the blocking rod 1302 to block the through hole, and the air pressure difference will fix it in the current position. The operator places his hand on the support ring 14. When the biosafety cabinet needs to be sterilized or used, the sealed glass door 18 is closed, and the water pump 6 is started to transport the hydrogen peroxide medium in the liquid storage tank 3 to the heating area 4. The external power supply is connected, and the temperature controller 502 is set to a threshold value that allows the hydrogen peroxide medium to reach the boiling point. The heating resistance wire 501 heats the heating area 4 to vaporize the hydrogen peroxide medium, and the gas is discharged into the interior of the cabinet 7 through the gas pipe 16. Since hydrogen peroxide is a highly oxidizing chemical substance, it can destroy the structure and function of microbial cells in the air, causing them to die, and effectively inactivate various types of microorganisms such as bacteria, fungi, and viruses.

[0037] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A biological safety cabinet with a sterilization structure, comprising a support frame (1), characterized in that: A holding plate (2) is fixedly connected to the middle of the support frame (1), and two holding grooves are provided on the surface of the holding plate (2), wherein a liquid storage tank (3) is clamped inside one of the holding grooves, and a heating zone (4) is clamped inside the other holding groove, and a gasification component (5) is fixedly connected to the bottom surface of the heating zone (4), and a water pump (6) is fixedly connected to the middle of the holding plate (2), and a cabinet (7) is fixedly connected to the top surface of the support frame (1), and an air inlet is provided on the edge of the inner bottom wall of the cabinet (7), and a groove is provided on the inner bottom surface of the cabinet (7), and an operating table (8) is clamped inside the groove, and the operating table (8) is fixedly connected to the bottom surface of the operating table (8). The edge of the surface of the table top (8) is provided with a sliding groove, a sliding rod (9) is fixedly connected inside the sliding groove, two moving blocks (10) are sleeved on the surface of the sliding rod (9), the top surface of the moving block (10) is fixedly connected with a lifting assembly (11), the top surface of the lifting assembly (11) is fixedly connected with a support tube (12), the inner top surface of the support tube (12) is fixedly connected with an air supply assembly (13), the top surface of the support tube (12) is fixedly connected with a support ring (14), the inner wall of the cabinet (7) is fixedly connected with a lighting assembly (15), and the front of the cabinet (7) is clamped with a sealed glass door (18).

2. A biological safety cabinet with a sterilization structure according to claim 1, characterized in that: The liquid storage box (3) contains hydrogen peroxide medium, and a connection port is provided on one side of the liquid storage box (3).

3. A biological safety cabinet with a sterilization structure according to claim 1, characterized in that: An input interface is fixedly connected to one side of the heating zone (4), an air outlet is fixedly connected to the surface of the heating zone (4), an air pipe (16) is threadedly connected to the surface of the air outlet, and the air pipe (16) is connected to the air inlet of the cabinet (7).

4. A biological safety cabinet with a sterilization structure according to claim 1, characterized in that: The input end of the water pump (6) is connected to a connection port on one side of the liquid storage tank (3), and the output end of the water pump (6) is connected to an input interface on one side of the heating zone (4).

5. A biological safety cabinet with a sterilization structure according to claim 1, characterized in that: The air supply assembly (13) includes a spring (1301) fixedly connected to the top surface of the support tube (12), the bottom end of the spring (1301) is fixedly connected to a blocking rod (1302), the surface of the blocking rod (1302) is fixedly connected to a lifting rod (1303), and the blocking rod (1302) is adapted to the through hole.

6. A biological safety cabinet with a sterilization structure according to claim 1, characterized in that: The lighting assembly (15) comprises a lampshade (1501) fixedly connected to the inner wall of the cabinet (7), and a lighting lamp (1502) is fixedly connected inside the lampshade (1501).

7. A biological safety cabinet with a sterilization structure according to claim 1, characterized in that: Universal wheels (17) are fixedly connected to the four sides of the bottom surface of the support frame (1), and brake pads are fixedly installed inside the universal wheels (17).

8. The biological safety cabinet with a sterilization structure according to claim 1, characterized in that: The gasification component (5) comprises a heating resistance wire (501) fixedly connected to the bottom surface of the heating zone (4), and one side of the heating resistance wire (501) is electrically connected to a temperature controller (502) via a power line.

9. A biological safety cabinet with a sterilization structure according to claim 1, characterized in that: The lifting assembly (11) comprises an outer sleeve (1101) fixedly connected to the top surface of the moving block (10); the inner bottom surface of the outer sleeve (1101) is fixedly connected to a piston rod (1102); the surface of the piston rod (1102) is sleeved with an inner sleeve (1103); the top end of the piston rod (1102) is fixedly connected to a piston block (1104); and the surface of the inner sleeve (1103) is provided with a through hole.

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