Biosafety laboratory

Abstract

The invention provides a bio-safety laboratory, and belongs to the technical field of laboratories, the bio-safety laboratory comprises a laboratory, an auxiliary chamber, a buffer chamber and an air shower located in the buffer chamber, the air shower comprises an air gallery and a static pressure box, and the bio-safety laboratory further comprises a fresh air system, a flow guide mechanism and an energy storage mechanism. When air enters an air inlet pipeline, air enters an adjusting box, a piston plate can be pushed to move, a clamping piece can limit a limiting clamping block, and energy storage can be conducted on a first elastic piece; when the air shower blows air, a movable rod drives an extrusion piece to move in the direction of the limiting piece, and the limiting clamping block can be separated from limiting of the clamping piece; and a fourth elastic piece is reset, an extrusion piece is separated from limiting of a limiting clamping block, stored energy of a first elastic piece is released, a piston plate can extract gas in the static pressure box, the pressure intensity in the air gallery can be in a negative pressure state, and flowing of the gas in the air gallery can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of laboratories, and in particular relates to a biosafety laboratory. Background Art

[0002] A biosafety laboratory is a biological laboratory or animal laboratory that uses protective barriers and management measures to prevent harmful biological factors from harming the surrounding environment and protect experimental subjects from contamination. The biosafety laboratory consists of a protection area and an auxiliary work area. Special channels and buffer rooms are used to control the flow of personnel and objects to reduce the risk of cross-contamination. The laboratory uses a fresh air system to ensure that the air flows from low-risk areas to high-risk areas. At the same time, the exhaust system should be filtered by a high-efficiency filter before discharge to prevent the spread of pathogens.

[0003] In actual practice, workers need to wear protective clothing before entering the laboratory, and then pass through the air shower room to remove the dust on their bodies to achieve a purification effect. Since the biosafety laboratory is in a negative pressure state, it can prevent the flow and diffusion of aerosols and microbial particles, and can reduce the risk of pollution to the external environment. The air shower room is under normal pressure for air shower purification. Every time a worker enters the laboratory, when the isolation door of the laboratory is opened, the negative pressure state inside the laboratory will be broken, affecting the isolation effect of the laboratory. And every time a worker enters the laboratory from the air shower room, when the isolation door of the air shower room is opened, the gas inside the air shower room will flow towards the laboratory in a negative pressure state, and will carry the dust inside the air shower room into the laboratory. This will affect the working environment of the laboratory for a long time.

[0004] Therefore, in order to solve the above problems, it is necessary to provide a biosafety laboratory. Summary of the invention

[0005] The purpose of the present invention is to provide a biosafety laboratory, which aims to solve the problem that when a staff member enters the laboratory and opens the partition door of the laboratory, the negative pressure state inside the laboratory will be broken, thereby affecting the isolation effect of the laboratory. In addition, each time the staff member enters the laboratory from an air shower room, when the partition door of the air shower room is opened, the gas inside the air shower room will flow toward the laboratory in a negative pressure state, and will carry the dust inside the air shower room into the laboratory. This will affect the working environment of the experiment for a long time.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A biosafety laboratory, comprising a laboratory, an auxiliary room, a buffer room and an air shower room arranged inside the buffer room, wherein the air shower room comprises an air gallery and a static pressure box, and further comprising:

[0008] A fresh air system, the fresh air system is arranged on the top of the laboratory, the fresh air system includes an air intake pipeline and an air exhaust pipeline, the air intake pipeline is connected with the laboratory and the auxiliary room for air supply, and the air exhaust pipeline is connected with the laboratory, the auxiliary room and the buffer room for air exhaust;

[0009] A flow guiding mechanism, wherein the flow guiding mechanism comprises a flow guiding pipe arranged at the top of the air shower room and connected to the inside of the air shower room, the other end of the flow guiding pipe is fixedly connected to a speed increasing pipe, the other end of the speed increasing pipe is fixedly connected to an air outlet pipe for exhausting air to the outside, the outer wall of the speed increasing pipe is fixedly connected to a flow guiding pipe connected to an exhaust pipeline, and a one-way valve is provided at the connection between the flow guiding pipe and the exhaust pipeline;

[0010] An energy storage mechanism comprises a transfer box arranged at the top of the air shower room, a first partition plate is fixedly connected to the interior of the transfer box, and the first partition plate divides the interior of the transfer box into an exhaust box and an air intake box. Adjustment boxes are provided on the tops of the static pressure boxes on both sides of the air shower room, a connecting pipe connected to the air intake pipeline is fixedly connected to the top of the air intake box, and the other end of the connecting pipe is connected to the two adjustment boxes respectively through a proportional valve.

[0011] Preferably, a connecting piece is fixedly connected to the interior of the transfer box, a first through groove connected to the guide pipe and the air shower chamber is provided inside the connecting piece, an avoidance groove connected to the first through groove is provided on the top of the connecting piece, two symmetrically arranged limiting slide grooves are provided on the inner wall of the first through groove, a first blocking piece is slidably connected to the interior of the first through groove, a slider is slidably connected to the interior of each limiting slide groove, each of the sliders is fixedly connected to the outer wall of the first blocking piece, the first through groove and the avoidance groove are connected in a wedge-shaped surface, and the top of the side where the two sliders are away from each other is arranged in a wedge-shaped surface.

[0012] Preferably, a fixing piece is fixedly connected to the inner side of the top of each adjusting box, and the two fixing pieces correspond to the two limiting slide grooves respectively, and the ends of the two fixing pieces close to the transfer box pass through the transfer box and are fixedly connected to the outer wall of the connecting piece, and a guide groove is opened inside each of the fixing pieces.

[0013] Preferably, each regulating box is slidably connected to a piston plate inside, a first elastic member is connected between the bottom of each piston plate and the inner wall of the corresponding regulating box, a guide hole connected to the corresponding static pressure box is provided at the bottom of each regulating box, a second blocking member slidably connected to the corresponding guide hole is fixedly connected to the bottom of each piston plate, an air outlet connected to the corresponding regulating box is provided on one side of the buffer chamber, and a filter is provided inside each air outlet.

[0014] Preferably, when the gas inside the air intake pipeline enters the interior of the regulating box, the air pressure inside the regulating box can be increased, which can push the piston plate to move toward the static pressure box. When it moves to the extreme position, the gas can enter the buffer chamber through the outlet hole.

[0015] Preferably, each of the adjusting boxes is provided with a second through groove penetrating the corresponding fixing member at the top, and each of the second through grooves is slidably connected inside with a limiting member fixedly connected to the corresponding piston plate, and each of the limiting members is provided with a receiving groove on a side close to the connecting member, and each of the receiving grooves is slidably connected inside with a limiting block, and a second elastic member is connected between the side of each limiting block close to the limiting member and the inner wall of the corresponding receiving groove.

[0016] Preferably, each of the inner walls of the accommodating grooves is provided with two symmetrically arranged limit grooves, each of the limit grooves is provided with a plurality of equally spaced protrusions, each of the limit blocks is provided with a slot on the top of a side close to the connecting piece, each of the limit blocks is arc-shaped on the bottom of a side close to the connecting piece, each of the limit blocks is provided with two symmetrically arranged adjustment grooves, the two adjustment grooves correspond to the two limit grooves one by one, each of the adjustment grooves is slidably connected with a limit column, and a third elastic member is connected between the side of each limit column away from the inner wall of the accommodating groove and the corresponding inner wall of the adjustment groove.

[0017] Preferably, each of the guide grooves is fixedly connected to a second partition plate, which divides the interior of the guide groove into a first chamber and a second chamber. Each of the second chambers is fixedly connected to a clamp on the inner wall close to the second through groove, and each of the clamps is provided with an extrusion piece slidably connected to the inner wall of the second chamber on the top, and each of the extrusion pieces is fixedly connected to a limiting plate on one side close to the second partition plate.

[0018] Preferably, each of the second partition plates is provided with an installation groove, and each of the installation grooves is slidably connected to a movable rod fixedly connected to the corresponding limiting plate, and the outer wall of each movable rod is fixedly connected to a movable plate slidably connected to the inner wall of the first chamber, and a fourth elastic member is connected between each movable plate and the second partition plate, and the inner wall of each limiting slide groove is provided with a third through groove connected to the corresponding first chamber, and each of the movable rods can move inside the corresponding third through groove.

[0019] Preferably, the connection between the limiting groove and the adjusting groove is arranged in a wedge-shaped surface.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the air inlet is closed, the air inlet is pushed back to the bottom of the air inlet groove, and the air inlet is pushed back to the bottom of the air inlet groove, so that ...

[0022] 2. The present invention sets a flow guide mechanism. When someone is detected inside the air shower room and air is blown, the gas can push the first blocking piece to move upward inside the first through groove, so that the first blocking piece can enter the inside of the avoidance groove. Since there is a gap between the outer wall of the first blocking piece and the avoidance groove, the gas can enter the inside of the guide pipe through the gap, and then enter the speed-increasing pipe for acceleration. The faster the flow rate, the smaller the pressure nearby, so that the pressure at the connection between the drainage pipe and the speed-increasing pipe is lower than the pressure inside the exhaust duct. The gas inside the exhaust duct can pass through the drainage pipe and the one-way valve into the exhaust pipe for discharge, which can increase the gas discharge of the exhaust duct, and can further strengthen the negative pressure intensity of the biological laboratory. The enhanced negative pressure can compensate for the negative pressure reduced at the moment of opening the door, prevent the flow and diffusion of aerosols and microbial particles, and improve the isolation effect of the biological laboratory. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is an overall schematic diagram of the biosafety laboratory of the present invention.

[0025] Figure 2 It is a schematic diagram of the explosion structure of the biological diversion mechanism of the present invention.

[0026] Figure 3 It is the structural distribution diagram of the laboratory of the present invention.

[0027] Figure 4 It is a schematic diagram of the overall structure of the air shower room of the present invention.

[0028] Figure 5 It is a schematic diagram of the internal structure of the air shower room of the present invention.

[0029] Figure 6 It is a structural schematic diagram of the regulating box of the present invention.

[0030] Figure 7 It is a schematic structural diagram of the connecting piece of the present invention.

[0031] Figure 8 It is a structural schematic diagram of the connecting pipe of the present invention.

[0032] Fig. 9 It is a schematic diagram of the structure of the fixing member and the limiting member of the present invention.

[0033] Fig.10 It is a schematic diagram of the internal structure of the fixing member and the limiting member of the present invention.

[0034] Fig.11 It is a schematic structural diagram of the connecting member and the first blocking member of the present invention.

[0035] Fig.12 It is a schematic diagram of the internal structure of the fixing member of the present invention.

[0036] Fig.13 For the present invention Figure 6 Enlarged view of the structure of part A in the middle.

[0037] Fig.14 For the present invention Fig.12 Enlarged view of the structure of part B in the middle.

[0038] In the figure: 1. Laboratory; 2. Auxiliary room; 3. Buffer room; 4. Air shower room; 41. Air corridor; 42. Static pressure box; 43. Air conveyor; 5. Fresh air system; 51. Air inlet pipeline; 52. Exhaust pipeline; 53. Connecting pipe; 6. Flow guide mechanism; 61. Flow guide pipe; 62. Speed ​​increasing pipe; 63. Air outlet pipe; 64. Drainage pipe; 65. One-way valve; 7. Energy storage mechanism; 71. Transfer box; 72. First partition plate; 73. Exhaust box; 74. Air inlet box; 75. Adjustment box; 76. Connector; 77. Proportional valve; 78. First through groove; 79. Avoidance groove; 710. Limiting slide groove; 711. First blocking member; 712. Sliding block; 713. Fixing member; 714. Guide groove; 71 5. Piston plate; 716. First elastic member; 717. Guide hole; 718. Second blocking member; 719. Air outlet; 720. Filter; 721. Second through slot; 722. Limiting member; 723. Accommodating slot; 724. Limiting block; 725. Second elastic member; 726. Limiting slot; 727. Bump; 728. Slot; 729. Adjusting slot; 730. Limiting column; 731. Third elastic member; 732. Second partition plate; 733. First chamber; 734. Second chamber; 735. Block; 736. Extrusion member; 737. Limiting plate; 738. Mounting slot; 739. Movable rod; 740. Movable plate; 741. Fourth elastic member; 742. Third through slot. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] In actual process, air shower room 4 is under normal pressure for air shower purification. Every time the staff enters the laboratory from air shower room 4 and opens the isolation door of air shower room 4, the gas inside air shower room 4 will flow toward laboratory 1 under negative pressure, and will carry the dust inside air shower room 4 into laboratory 1. This will affect the working environment of laboratory 1 for a long time.

[0042] See also Figures 1 to 14The present invention provides the following technical solutions: A biosafety laboratory comprises a laboratory 1, an auxiliary room 2, a buffer room 3 and an air shower room 4 arranged inside the buffer room 3, the air shower room 4 comprises an air corridor 41 and a static pressure box 42, and also comprises a fresh air system 5, the fresh air system 5 is arranged on the top of the laboratory 1, the fresh air system 5 comprises an air intake pipeline 51 and an exhaust pipeline 52, the air intake pipeline 51 is connected with the laboratory 1 and the auxiliary room 2 for air supply, and the exhaust pipeline 52 is connected with the laboratory 1, the auxiliary room 2 and the buffer room 3 for exhaust.

[0043] The energy storage mechanism 7 includes a transfer box 71 disposed at the top of the air shower room 4, and a first partition plate 72 is fixedly connected to the interior of the transfer box 71. The first partition plate 72 divides the interior of the transfer box 71 into an exhaust box 73 and an intake box 74. The tops of the static pressure boxes 42 on both sides of the air shower room 4 are provided with regulating boxes 75. The top of the intake box 74 is fixedly connected with a connecting pipe 53 connected to the intake pipeline 51, and the other end of the connecting pipe 53 is connected to the two regulating boxes 75 respectively through a proportional valve 77. The gas inside the intake pipeline 51 can evenly enter the interiors of the two regulating boxes 75 through the proportional valve 77.

[0044] The fresh air system 5 also includes a control system, a fan, and a filtering device. The control system is used to control the operation of the ventilation equipment to achieve automatic control. It can automatically adjust the equipment operation status according to the specific situation of the laboratory 1, so as to maintain a comfortable environment in the laboratory 1. The fan is arranged at the air inlet and outlet of the air intake duct 51 and the exhaust duct 52 to assist the air inlet and outlet inside the laboratory 1. The filtering device is used to filter the gas entering the laboratory 1 and the gas discharged from the laboratory 1. The control system, fan and filtering equipment are all existing technologies and will not be repeated here.

[0045] The air shower room 4 also includes an air conveyor 43, a shower, an isolation door, a distribution box, a nozzle and an infrared detector. When a staff member enters the air shower room 4, he can be detected by the infrared detector and blown. The air conveyor 43 is connected to the outside through a pipeline and is used to supply air to the inside of the air shower room 4. The gas enters the static pressure box 42 through the air conveyor 43, can be filtered through the shower, and then blown to the inside of the air corridor 41 through the nozzle. The existing technology is not repeated here.

[0046] like Figures 5 to 11As shown, a connecting piece 76 is fixedly connected to the interior of the transfer box 71, and a first through groove 78 connected to the guide pipe 61 and the air shower room 4 is provided inside the connecting piece 76, and an avoidance groove 79 connected to the first through groove 78 is provided on the top of the connecting piece 76. Two symmetrically arranged limiting slide grooves 710 are provided on the inner wall of the first through groove 78, and a first blocking piece 711 is slidably connected to the interior of the first through groove 78. A slider 712 is slidably connected to the interior of each limiting slide groove 710, and each slider 712 is fixedly connected to the outer wall of the first blocking piece 711. The connection between the first through groove 78 and the avoidance groove 79 is set in a wedge-shaped surface, and the top of the side where the two sliders 712 are away from each other is set in a wedge-shaped surface, and the diameter of the avoidance groove 79 is larger than the diameter of the first through groove 78.

[0047] Under normal conditions, that is, when the air shower room 4 is not working, the first blocking piece 711 is located at the bottom of the first through groove 78 under the action of its own gravity, and the slider 712 is at the bottom of the limiting slide groove 710. The first blocking piece 711 can block the first through groove 78. When air is blown inside the air shower room 4, since the air shower room 4 is in a sealed state, the pressure increases, and the gas can push the first blocking piece 711 to move upward inside the first through groove 78, so that the first blocking piece 711 can enter the inside of the avoidance groove 79. Since there is a gap between the outer wall of the first blocking piece 711 and the avoidance groove 79, the gas can enter the inside of the guide pipe 61 through the gap. At this time, the first blocking piece 711 can be maintained at the top position of the avoidance groove 79 under the blowing force of the wind. When the air shower room 4 is no longer blown, the first blocking piece 711 can return to the bottom of the first through groove 78 under the action of its own gravity.

[0048] A fixing piece 713 is fixedly connected to the inner side of the top of each adjustment box 75. The two fixing pieces 713 correspond to the two limiting slide grooves 710 one by one, and one end of the two fixing pieces 713 close to the transfer box 71 passes through the transfer box 71 and is fixedly connected to the outer wall of the connecting piece 76. A guide groove 714 is opened inside each fixing piece 713.

[0049] A piston plate 715 is slidably connected to the interior of each regulating box 75, a first elastic member 716 is connected between the bottom of each piston plate 715 and the inner wall of the corresponding regulating box 75, a guide hole 717 connected to the corresponding static pressure box 42 is provided at the bottom of each regulating box 75, a second blocking member 718 slidably connected to the corresponding guide hole 717 is fixedly connected to the bottom of each piston plate 715, an air outlet 719 connected to the corresponding regulating box 75 is provided on one side of the buffer chamber 3, and a filter screen 720 is provided inside each air outlet 719.

[0050] When the gas inside the air intake pipe 51 enters the regulating box 75, the air pressure inside the regulating box 75 can be increased, which can push the piston plate 715 to move toward the static pressure box 42. When it moves to the bottom limit position, the gas can enter the buffer chamber 3 through the air outlet 719. At the same time, the second sealing member 718 can enter the guide hole 717 and seal the guide hole 717, thereby preventing the gas that subsequently enters the static pressure box 42 from entering the regulating box 75.

[0051] like Figures 9 to 14 As shown, a second through groove 721 penetrating the corresponding fixing member 713 is provided on the top of each adjustment box 75, and a limiting member 722 fixedly connected to the corresponding piston plate 715 is slidably connected inside each second through groove 721, and a receiving groove 723 is provided on the side of each limiting member 722 close to the connecting member 76, and a limiting block 724 is slidably connected inside each receiving groove 723, and a second elastic member 725 is connected between the side of each limiting block 724 close to the limiting member 722 and the inner wall of the corresponding receiving groove 723.

[0052] The inner wall of each accommodating groove 723 is provided with two symmetrically arranged limit grooves 726, and the interior of each limit groove 726 is provided with a plurality of equally spaced protrusions 727. A slot 728 is provided on the top of each limit block 724 close to the connecting member 76, and the bottom of each limit block 724 close to the connecting member 76 is arc-shaped. Two symmetrically arranged adjustment grooves 729 are provided on the interior of each limit block 724, and the two adjustment grooves 729 correspond to the two limit grooves 726 one by one, respectively. A limit column 730 is slidably connected to the interior of each adjustment groove 729, and a third elastic member 731 is connected between the side of each limit column 730 away from the inner wall of the accommodating groove 723 and the inner wall of the corresponding adjustment groove 729.

[0053] When the limiting member 722 moves inside the second through groove 721 toward the direction close to the static pressure box 42, the bottom arc surface of the limiting block 724 will first contact the clamping member 735, and the clamping member 735 can squeeze the limiting block 724 partially into the accommodating groove 723, and can squeeze the second elastic member 725. Then, when the limiting member 722 moves to the bottom extreme position, the clamping member 735 can be misaligned with the limiting block 724 and can enter the clamping groove 728. The second elastic member 725 can be reset, so that the clamping member 735 can limit the limiting block 724.

[0054] A second partition plate 732 is fixedly connected to the interior of each guide groove 714, and the second partition plate 732 divides the interior of the guide groove 714 into a first chamber 733 and a second chamber 734. Each second chamber 734 is fixedly connected to a clamp 735 on the inner wall near the second through groove 721, and the top of each clamp 735 is provided with an extrusion member 736 that is slidably connected to the inner wall of the second chamber 734, and each extrusion member 736 is fixedly connected to a limiting plate 737 on one side near the second partition plate 732.

[0055] Each second partition plate 732 is provided with a mounting groove 738, and each mounting groove 738 is slidably connected to a movable rod 739 fixedly connected to the corresponding limiting plate 737, and the outer wall of each movable rod 739 is fixedly connected to a movable plate 740 slidably connected to the inner wall of the first chamber 733, and a fourth elastic member 741 is connected between each movable plate 740 and the second partition plate 732, and a third through groove 742 connected to the corresponding first chamber 733 is provided on the inner wall of each limiting slide groove 710, and each movable rod 739 can move inside the corresponding third through groove 742.

[0056] Under normal conditions, that is, when the air shower room 4 is not working, the movable rod 739 can be operated by the fourth elastic member 741, and the end of the movable rod 739 away from the limiting plate 737 can pass through the third through slot 742 and enter the corresponding limiting slide slot 710. At this time, the limiting column 730 is completely squeezed into the adjusting slot 729 by the inner wall of the accommodating slot 723, and the third elastic member 731 is in a compressed state. When the first blocking member 711 moves upward in the first through slot 78, the slider 712 moves up in the limiting slide slot 710, which can make the wedge-shaped surface at the top squeeze the movable rod 739, so that the movable rod 739 can drive the extrusion member 736 toward the limiting The movement of the fourth elastic member 741 in the direction of the part 722 can make the movable plate 740 squeeze the fourth elastic member 741, and the squeezing member 736 can enter the interior of the slot 728 and squeeze the limiting block 724 to completely enter the accommodating groove 723, which can squeeze the second elastic member 725, so that the limiting column 730 can completely enter the interior of the limiting slot 726, and the third elastic member 731 is reset. Subsequently, during the process of resetting the second elastic member 725, the limiting column 730 can intermittently contact the protrusion 727, which can provide resistance to the resetting of the second elastic member 725, prolong the resetting time, and facilitate the limiting block 724 to break away from the limit of the card member 735.

[0057] The connection between the limiting groove 726 and the adjusting groove 729 is set in a wedge-shaped surface, so as to facilitate the limiting column 730 to enter the accommodating groove 723 from the inside of the limiting groove 726.

[0058] It should be noted that when the air shower room 4 is not working, the gas inside the air intake pipe 51 can evenly enter the interior of the two regulating boxes 75 through the proportional valve 77, which can increase the internal pressure of the regulating box 75 and push the piston plate 715 to move in the direction close to the static pressure box 42. During this process, the piston plate 715 can squeeze the first elastic member 716 for compression, which can drive the limiting member 722 to move downward inside the second through groove 721. The bottom arc surface of the limiting block 724 will first contact the clamping member 735, and the clamping member 735 can squeeze the limiting block 724 partially into the accommodating groove 723, which can squeeze the second elastic member 725. Subsequently, when the limiting member 722 moves to the bottom limit position, the clamping member 735 can be misaligned with the limiting block 724, which can enter When the air shower room 4 is opened, the air can enter the slot 728, and the second elastic member 725 can be reset, so that the card member 735 can limit the limit block 724, so as to realize the energy storage of the first elastic member 716. At the same time, when the limit member 722 moves to the bottom limit position, the gas inside the regulating box 75 can enter the buffer chamber 3 through the air outlet 719 and the filter screen 720, and the second blocking member 718 can enter the guide hole 717 to block the guide hole 717. When someone is detected inside the air shower room 4 and air is blown, the gas can push the first blocking member 711 to move upward inside the first through slot 78, so that the first blocking member 711 can enter the avoidance slot 79. Since there is a gap between the outer wall of the first blocking member 711 and the avoidance slot 79, the gas can enter through the gap. When the first sealing member 711 moves upward in the first through groove 78 inside the guide tube 61, the wedge-shaped surface on the top of the slider 712 can squeeze the movable rod 739, so that the movable rod 739 can drive the extrusion member 736 to move in the direction of the limiting member 722, so that the movable plate 740 can squeeze the fourth elastic member 741, and the extrusion member 736 can completely enter the slot 728, and squeeze the limiting block 724 to completely enter the accommodating groove 723, and squeeze the second elastic member 725, so that the limiting column 730 can enter the limiting slot 726, and the limiting block 724 can be separated from the limiting position of the clamping member 735. At this time, the extrusion member 736 can limit the limiting block 724, and then when the air shower room 4 is no longer blowing air, the first sealing member 711 can Under the action of its own gravity, it returns to the bottom of the first through groove 78, the fourth elastic member 741 is quickly reset, and the extrusion member 736 is separated from the limit block 724, so that the first elastic member 716 can be reset and the stored energy is released. The second blocking member 718 no longer blocks the guide hole 717, and the piston plate 715 can extract the gas inside the static pressure box 42, so that the gas in the air corridor 41 can pass through the nozzle into the static pressure box 42, and the pressure inside the air corridor 41 can be in a negative pressure state. Under the negative pressure state, the flow of the gas inside the air corridor 41 can be reduced, and the deposition speed of dust inside the air corridor 41 can be accelerated. When the isolation door of the air shower room 4 is opened, the gas inside the air shower room 4 can be effectively suppressed from flowing into the laboratory 1. It should be noted that the negative pressure degree inside the air shower room 4 isThe internal pressure should be lower than that of the adjacent laboratory 1. The negative pressure inside the air shower room 4 should be set according to the actual situation.

[0059] During the rapid resetting of the fourth elastic member 741, that is, when the extrusion member 736 moves toward the connecting member 76, the second elastic member 725 can be reset, and the limiting block 724 can be moved toward the direction close to the clamping member 735. The limiting column 730 can intermittently contact the protrusion 727, which can provide resistance to the resetting of the second elastic member 725 and extend the resetting time. During this time period, the limiting block 724 can be separated from the limit of the clamping member 735 and the extrusion member 736, so that the first elastic member 716 can release the stored energy and reset.

[0060] In summary, the present invention is provided with the energy storage mechanism 7. When air is taken in through the air intake pipe 51, the gas can enter the interior of the regulating box 75 and can push the piston plate 715 to move toward the direction close to the static pressure box 42. In this process, the clamping member 735 limits the limiting clamping block 724 and can store energy for the first elastic member 716. When someone is detected inside the air shower room 4 and air is blown, the gas can push the first blocking member 711 to move upward inside the first through groove 78. The wedge-shaped surface on the top of the slider 712 can squeeze the movable rod 739, so that the movable rod 739 can drive the extruding member 736 to move in the direction of the limiting member 722. The extruding member 736 can completely enter the interior of the clamping groove 728 and squeeze the limiting clamping block 724 to completely enter the interior of the accommodating groove 723, so that the limiting clamping block 724 can completely enter the accommodating groove 723. When the air shower room 4 is no longer blown, the first sealing member 711 can return to the bottom of the first through groove 78 under the action of its own gravity, and the fourth elastic member 741 is reset. The extrusion member 736 is separated from the limit of the limit block 724, and the first elastic member 716 is reset. The piston plate 715 can extract the internal gas of the static pressure box 42, and the pressure inside the air corridor 41 can be in a negative pressure state. Under the negative pressure state, the flow of the internal gas of the air corridor 41 can be reduced, and the deposition speed of dust in the air corridor 41 can be accelerated. When the isolation door of the air shower room 4 is opened, the internal gas of the air shower room 4 can be effectively suppressed from flowing into the laboratory 1, and the working environment of the biological laboratory 1 can be improved.

[0061] Embodiment 2

[0062] On the basis of the above embodiment, the staff needs to wear protective clothing before entering the laboratory 1, and then pass through the air shower room 4 to remove the dust on the body to achieve the purification effect. Since the biosafety laboratory 1 is in a negative pressure state, it can prevent the flow and diffusion of aerosols and microbial particles, and can reduce the risk of pollution to the external environment. Every time the staff enters the laboratory 1, when the partition door of the laboratory 1 is opened, the negative pressure state inside the laboratory 1 will be broken, affecting the effect of the laboratory 1 in preventing the flow and diffusion of aerosols and microbial particles.

[0063] like Figure 2 As shown, it also includes a guide mechanism 6, which includes a guide pipe 61 arranged on the top of the air shower room 4 and connected to the inside of the air shower room 4, the other end of the guide pipe 61 is fixedly connected to a speed-increasing pipe 62, the other end of the speed-increasing pipe 62 is fixedly connected to an outlet pipe 63 for exhausting air to the outside, the outer wall of the speed-increasing pipe 62 is fixedly connected to a drainage pipe 64 connected to the exhaust pipeline 52, and a one-way valve 65 is provided at the connection between the drainage pipe 64 and the exhaust pipeline 52, so that the gas inside the exhaust pipeline 52 can enter the drainage pipe 64 through the one-way valve 65.

[0064] The pipeline diameter of the speed increasing pipe 62 is smaller than the pipeline diameters of the flow guiding pipe 61 and the gas outlet pipe 63 , in order to increase the flow velocity of the gas by reducing the cross-sectional area.

[0065] Since the negative pressure inside the biological laboratory 1 is regulated and controlled by the air intake and exhaust volumes, in actual use, when someone is detected inside the air shower room 4 and air is blown, the gas can push the first blocking member 711 to move upward inside the first through groove 78, so that the first blocking member 711 can enter the inside of the avoidance groove 79. Since there is a gap between the outer wall of the first blocking member 711 and the avoidance groove 79, the gas can pass through the gap into the inside of the guide tube 61, and then enter the speed-increasing tube 62 for speeding up. According to Bernoulli's principle, the faster the flow rate, the smaller the pressure nearby, so that the pressure at the connection between the drainage tube 64 and the speed-increasing tube 62 is lower than The pressure inside the exhaust duct 52 can make the gas inside the exhaust duct 52 pass through the drainage pipe 64 and the one-way valve 65 into the exhaust pipe 63 and be discharged to the outside, which can increase the gas discharge volume of the exhaust duct 52, further strengthen the negative pressure intensity of the biological laboratory 1, and enhance the negative pressure inside the biological laboratory 1 in advance to prepare for subsequent staff to enter the laboratory 1. The enhanced negative pressure can compensate for the negative pressure reduced at the moment of opening the door, thereby avoiding the biological laboratory 1 affecting the effect of the laboratory 1 in preventing the flow and diffusion of aerosols and microbial particles at the moment of opening the door, and improving the isolation effect inside the laboratory 1.

[0066] The present invention provides a flow guide mechanism 6. When someone is detected inside the air shower room 4 and air is blown, the gas can push the first blocking member 711 to move upward inside the first through groove 78, so that the first blocking member 711 can enter the inside of the avoidance groove 79. Since there is a gap between the outer wall of the first blocking member 711 and the avoidance groove 79, the gas can enter the inside of the flow guide pipe 61 through the gap, and then enter the speed increasing pipe 62 for speed increase. The faster the flow rate, the smaller the pressure nearby, so that the pressure at the connection between the flow guide pipe 64 and the speed increasing pipe 62 is lower than the pressure inside the exhaust pipe 52, which can The gas inside the exhaust duct 52 passes through the drainage pipe 64 and the one-way valve 65 and enters the exhaust pipe 63 for discharge, which can increase the gas discharge volume of the exhaust duct 52, further strengthen the negative pressure strength of the biological laboratory 1, and enhance the negative pressure inside the biological laboratory 1 in advance to prepare for subsequent staff to enter the laboratory 1. The enhanced negative pressure can compensate for the negative pressure reduced at the moment of opening the door, and the flow and diffusion of aerosols and microbial particles can be prevented by enhancing the negative pressure at the moment the biological laboratory 1 opens the door, thereby improving the isolation effect of the biological laboratory 1.

[0067] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A biosafety laboratory, comprising a laboratory (1), an auxiliary room (2), a buffer room (3), and an air shower room (4) arranged inside the buffer room (3), wherein the air shower room (4) comprises an air corridor (41) and a static pressure box (42), characterized in that: Also includes: A fresh air system (5), the fresh air system (5) being arranged on the top of the laboratory (1), the fresh air system (5) comprising an air intake pipeline (51) and an air exhaust pipeline (52), the air intake pipeline (51) being connected to the laboratory (1) and the auxiliary room (2) for supplying air, and the air exhaust pipeline (52) being connected to the laboratory (1), the auxiliary room (2) and the buffer room (3) for exhausting air; A flow guiding mechanism (6), the flow guiding mechanism (6) comprising a flow guiding pipe (61) arranged at the top of the air shower room (4) and connected to the interior of the air shower room (4), the other end of the flow guiding pipe (61) being fixedly connected to a speed increasing pipe (62), the other end of the speed increasing pipe (62) being fixedly connected to an air outlet pipe (63) for exhausting air to the outside, the outer wall of the speed increasing pipe (62) being fixedly connected to a flow guiding pipe (64) connected to an exhaust pipe (52), and a one-way valve (65) being provided at the connection between the flow guiding pipe (64) and the exhaust pipe (52); An energy storage mechanism (7), the energy storage mechanism (7) comprising a transfer box (71) arranged at the top of the air shower room (4), a first partition plate (72) being fixedly connected to the interior of the transfer box (71), the first partition plate (72) dividing the interior of the transfer box (71) into an exhaust box (73) and an intake box (74), a regulating box (75) being provided on the top of the static pressure boxes (42) on both sides of the air shower room (4), a connecting pipe (53) connected to the intake pipeline (51) being fixedly connected to the top of the intake box (74), the other end of the connecting pipe (53) being connected to the two regulating boxes (75) via a proportional valve (77).

2. The biosafety laboratory according to claim 1, characterized in that: A connecting piece (76) is fixedly connected inside the transfer box (71), a first through groove (78) connected to the guide pipe (61) and the air shower chamber (4) is provided inside the connecting piece (76), an avoidance groove (79) connected to the first through groove (78) is provided on the top of the connecting piece (76), two symmetrically arranged limiting sliding grooves (710) are provided on the inner wall of the first through groove (78), a first blocking piece (711) is slidably connected inside the first through groove (78), a sliding block (712) is slidably connected inside each limiting sliding groove (710), each of the sliding blocks (712) is fixedly connected to the outer wall of the first blocking piece (711), a wedge-shaped surface is formed at the connection between the first through groove (78) and the avoidance groove (79), and a wedge-shaped surface is formed at the top of the two sliding blocks (712) on the side away from each other.

3. The biosafety laboratory according to claim 2, characterized in that: A fixing piece (713) is fixedly connected to the inner side of the top of each regulating box (75), and the two fixing pieces (713) correspond to the two limiting slide grooves (710) one by one, respectively. One end of the two fixing pieces (713) close to the transfer box (71) passes through the transfer box (71) and is fixedly connected to the outer wall of the connecting piece (76), and a guide groove (714) is provided inside each fixing piece (713).

4. The biosafety laboratory according to claim 3, characterized in that: A piston plate (715) is slidably connected to the interior of each regulating box (75); a first elastic member (716) is connected between the bottom of each piston plate (715) and the inner wall of the corresponding regulating box (75); a guide hole (717) connected to the corresponding static pressure box (42) is provided at the bottom of each regulating box (75); a second blocking member (718) slidably connected to the corresponding guide hole (717) is fixedly connected to the bottom of each piston plate (715); an air outlet (719) connected to the corresponding regulating box (75) is provided on one side of each regulating box (75) located at the buffer chamber (3); and a filter screen (720) is provided inside each air outlet (719).

5. The biosafety laboratory according to claim 4, characterized in that: When the gas in the air inlet pipeline (51) enters the regulating box (75), the air pressure in the regulating box (75) is increased, which can push the piston plate (715) to move in a direction close to the static pressure box (42). When the piston plate (715) moves to the extreme position, the gas can enter the buffer chamber (3) through the air outlet (719).

6. The biosafety laboratory according to claim 5, characterized in that: A second through slot (721) penetrating the corresponding fixing member (713) is provided on the top of each regulating box (75); a limiting member (722) fixedly connected to the corresponding piston plate (715) is slidably connected inside each second through slot (721); a receiving groove (723) is provided on a side of each limiting member (722) close to the connecting member (76); a limiting clamping block (724) is slidably connected inside each receiving groove (723); and a second elastic member (725) is connected between a side of each limiting clamping block (724) close to the limiting member (722) and an inner wall of the corresponding receiving groove (723).

7. The biosafety laboratory according to claim 6, characterized in that: The inner wall of each of the accommodating grooves (723) is provided with two symmetrically arranged limiting grooves (726), and the interior of each of the limiting grooves (726) is provided with a plurality of equally spaced protrusions (727). The top of each of the limiting clamping blocks (724) close to the connecting member (76) is provided with a clamping groove (728), and the bottom of each of the limiting clamping blocks (724) close to the connecting member (76) is arranged in an arc shape. The interior of each of the limiting clamping blocks (724) is provided with two symmetrically arranged adjusting grooves (729), and the two adjusting grooves (729) correspond to the two limiting grooves (726) one by one. The interior of each of the adjusting grooves (729) is slidably connected with a limiting column (730), and a third elastic member (731) is connected between the side of each of the limiting columns (730) away from the inner wall of the accommodating groove (723) and the inner wall of the corresponding adjusting groove (729).

8. The biosafety laboratory according to claim 7, characterized in that: A second partition plate (732) is fixedly connected to the interior of each guide groove (714), and the second partition plate (732) divides the interior of the guide groove (714) into a first chamber (733) and a second chamber (734). A clamping member (735) is fixedly connected to the inner wall of each second chamber (734) close to the second through groove (721), and an extrusion member (736) slidably connected to the inner wall of the second chamber (734) is provided at the top of each clamping member (735), and a limiting plate (737) is fixedly connected to one side of each extrusion member (736) close to the second partition plate (732).

9. The biosafety laboratory according to claim 8, characterized in that: Each of the second partition plates (732) is provided with a mounting groove (738), and each of the mounting grooves (738) is slidably connected to a movable rod (739) fixedly connected to the corresponding limiting plate (737). The outer wall of each movable rod (739) is fixedly connected to a movable plate (740) slidably connected to the inner wall of the first chamber (733). A fourth elastic member (741) is connected between each movable plate (740) and the second partition plate (732). The inner wall of each limiting slide groove (710) is provided with a third through groove (742) connected to the corresponding first chamber (733), and each movable rod (739) can move inside the corresponding third through groove (742).

10. The biosafety laboratory according to claim 9, characterized in that: The connection between the limiting groove (726) and the adjusting groove (729) is arranged in a wedge-shaped surface.

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