A biosafety laboratory

Abstract

The present invention provides a biosafety laboratory, belonging to the technical field of laboratories. The biosafety laboratory includes a laboratory, an auxiliary room, a buffer room, and an air shower room arranged inside the buffer room. The air shower room includes an air corridor and a static pressure box, and also includes a fresh air system, a diversion mechanism, and an energy storage mechanism. Through the setting of the energy storage mechanism, when the air inlet pipeline intakes air, the gas enters the inside of the adjustment box, can push the piston plate to move, can enable the clamping member to limit the position of the limiting block, can store energy for the first elastic member. When the air shower room blows air, the movable rod drives the extrusion member to move towards the limiting member, can enable the limiting block to break away from the limit of the clamping member. When the air shower room stops blowing air, the fourth elastic member resets, the extrusion member disengages from limiting the limiting block, the energy stored in the first elastic member is released, the piston plate can extract the gas inside the static pressure box, can make the pressure inside the air corridor in a negative pressure state, and can reduce the flow of the gas inside the air corridor.

Description

Technical Field

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

[0002] A biosafety laboratory refers to a biological laboratory or animal laboratory that, through protective barriers and management measures, avoids harmful biological agents from endangering the surrounding environment and protects the experimental objects from being contaminated. A biosafety laboratory consists of a protected area and an auxiliary working area, and controls the flow of personnel and items through dedicated channels and buffer rooms to reduce the risk of cross-contamination. The laboratory adopts a fresh air system to ensure that the air flow is from a low-risk area to a high-risk area. At the same time, the exhaust system should be discharged after being filtered by a high-efficiency filter to prevent the spread of pathogens.

[0003] In the actual process, before entering the laboratory, the staff needs to wear protective clothing first, and then pass through the air shower to remove the dust carried on the body 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 polluting the external environment. However, the air shower is purified under normal pressure. Every time the staff enters the laboratory, opening the isolation door of the laboratory will break the negative pressure state inside the laboratory, affecting the isolation effect of the laboratory. And every time entering the laboratory from the air shower, when opening the isolation door of the air shower, the gas inside the air shower will flow towards the laboratory in a negative pressure state, carrying the dust inside the air shower into the laboratory. Over time, this will affect the working environment of the laboratory.

[0004] Therefore, in order to solve the above problems, a biosafety laboratory is needed. Summary of the Invention

[0005] The purpose of the present invention is to provide a biosafety laboratory, aiming to solve the problems that when the staff enters the laboratory and opens the isolation door of the laboratory, it will break the negative pressure state inside the laboratory, affecting the isolation effect of the laboratory, and every time entering the laboratory from the air shower, when opening the isolation door of the air shower, the gas inside the air shower will flow towards the laboratory in a negative pressure state, carrying the dust inside the air shower into the laboratory, which will affect the working environment of the experiment over time.

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

[0007] A biosafety laboratory includes a laboratory, an auxiliary room, a buffer room, and an air shower arranged inside the buffer room. The air shower includes an air corridor and a static pressure box, and further includes:

[0008] Fresh air system, the fresh air system is arranged at the top of the laboratory, the fresh air system includes an air inlet pipeline and an exhaust pipeline, the air inlet pipeline is connected to the laboratory and the auxiliary room and is used for supplying air, and the exhaust pipeline is connected to the laboratory, the auxiliary room and the buffer room and is used for exhausting air;

[0009] Flow guiding mechanism, the flow guiding mechanism includes a flow guiding pipe arranged at the top of the air shower room and communicating with the inside of the air shower room, the other end of the flow guiding pipe is fixedly connected with an acceleration pipe, the other end of the acceleration pipe is fixedly connected with an air outlet pipe for exhausting air to the outside, the outer wall of the acceleration pipe is fixedly connected with a drainage pipe communicating with the exhaust pipeline, and a one-way valve is arranged at the connection between the drainage pipe and the exhaust pipeline;

[0010] Energy storage mechanism, the energy storage mechanism includes a flow conversion box arranged at the top of the air shower room, a first partition plate is fixedly connected inside the flow conversion box, the first partition plate divides the inside of the flow conversion box into an exhaust box and an intake box, adjustment boxes are arranged at the tops of the static pressure boxes on both sides of the air shower room, the top of the intake box is fixedly connected with a connecting pipe communicating with the air inlet pipeline, and the other end of the connecting pipe is respectively communicated with the two adjustment boxes through a proportional valve.

[0011] Preferably, a connecting piece is fixedly connected inside the flow conversion box, a first through groove communicating with the flow guiding pipe and the air shower room is opened inside the connecting piece, an avoidance groove communicating with the first through groove is opened at the top of the connecting piece, two symmetrically arranged limiting sliding grooves are opened on the inner wall of the first through groove, a first plugging piece is slidably connected inside the first through groove, a sliding block is slidably connected inside each limiting sliding groove, each sliding block is fixedly connected with the outer wall of the first plugging piece, the connection between the first through groove and the avoidance groove is arranged as a wedge surface, and the tops of the two sliding blocks on the side away from each other are arranged as wedge surfaces.

[0012] Preferably, fixing pieces are fixedly connected to the inner sides of the tops of each adjustment box, the two fixing pieces correspond to the two limiting sliding grooves one by one, and the ends of the two fixing pieces close to the flow conversion box both penetrate through the flow conversion box and are fixedly connected with the outer wall of the connecting piece, and a guiding groove is opened inside each fixing piece.

[0013] Preferably, a piston plate is slidably connected inside each adjustment box, a first elastic member is connected between the bottom of each piston plate and the inner wall of the corresponding adjustment box, a diversion hole communicating with the corresponding static pressure box is opened at the bottom of each adjustment box, a second plugging piece slidably connected with the corresponding diversion hole is fixedly connected to the bottom of each piston plate, an air outlet hole communicating with the corresponding adjustment box is opened on one side of each adjustment box located in the buffer room, and a filter screen is arranged inside each air outlet hole.

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

[0015] Preferably, a second through groove penetrating the corresponding fixing member is formed at the top of each adjustment box. A limiting member fixedly connected to the corresponding piston plate is slidably connected inside each second through groove. A receiving groove is formed on one side of each limiting member close to the connecting member. A limiting block is slidably connected inside each receiving groove. A second elastic member is connected between one side of each limiting block close to the limiting member and the inner wall of the corresponding receiving groove.

[0016] Preferably, two symmetrically arranged limiting grooves are formed on the inner wall of each receiving groove. A plurality of equidistantly distributed protrusions are arranged inside each limiting groove. A clamping groove is formed at the top of one side of each limiting block close to the connecting member. The bottom of one side of each limiting block close to the connecting member is arc-shaped. Two symmetrically arranged adjustment grooves are formed inside each limiting block. The two adjustment grooves respectively correspond to the two limiting grooves one by one. A limiting column is slidably connected inside each adjustment groove. A third elastic member is connected between one side of each limiting column far from the inner wall of the receiving groove and the inner wall of the corresponding adjustment groove.

[0017] Preferably, a second partition plate is fixedly connected inside each guiding groove. The second partition plate divides the inside of the guiding groove into a first chamber and a second chamber. A clamping member is fixedly connected to the inner wall of each second chamber close to the second through groove. An extrusion member slidably connected to the inner wall of the second chamber is arranged at the top of each clamping member. A limiting plate is fixedly connected to one side of each extrusion member close to the second partition plate.

[0018] Preferably, an installation groove is formed on each second partition plate. A movable rod fixedly connected to the corresponding limiting plate is slidably connected inside each installation groove. A movable plate slidably connected to the inner wall of the first chamber is fixedly connected to the outer wall of each movable rod. A fourth elastic member is connected between each movable plate and the second partition plate. A third through groove communicating with the corresponding first chamber is formed on the inner wall of each limiting sliding groove. Each movable rod can move inside the corresponding third through groove.

[0019] Preferably, the connection part between the limiting groove and the adjustment groove is arranged as a wedge-shaped surface.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. Through the setting of the energy storage mechanism, the present invention can store energy in the first elastic member when the air inlet pipeline intakes air. When it is detected that there is someone inside the air shower room and air blowing is carried out, the gas can push the first plugging member to move upward inside the first through groove. The wedge-shaped surface at the top of the slider can squeeze the movable rod, enabling the movable rod to drive the extrusion member to move towards the limiting member. The extrusion member can completely enter into the card slot and squeeze the limiting block to completely enter into the accommodating groove, enabling the limiting block to break away from the limit of the clamping member. The extrusion member can limit the limiting block. Subsequently, when the air shower room stops blowing air, the first plugging member can, under the action of its own gravity, return to the bottom of the first through groove again. The fourth elastic member resets, the extrusion member disengages from limiting the limiting block, and the first elastic member resets. The piston plate can extract the gas inside the static pressure box, enabling the pressure inside the air corridor to be in a negative pressure state, effectively suppressing the flow of the gas inside the air shower room into the laboratory, and improving the working environment of the biological laboratory.

[0022] 2. Through the setting of the diversion mechanism, when it is detected that there is someone inside the air shower room and air blowing is carried out, the gas can push the first plugging member to move upward inside the first through groove, enabling the first plugging member to enter into the avoidance groove. Since there is a gap between the outer wall of the first plugging member and the avoidance groove, the gas can enter into the diversion pipe through the gap and then enter the speed increasing pipe to increase the speed. The faster the flow rate, the lower the pressure nearby. The pressure at the connection between the diversion pipe and the speed increasing pipe is lower than the pressure inside the exhaust pipeline, enabling the gas inside the exhaust pipeline to pass through the diversion pipe and the one-way valve and enter into the outlet pipe for discharge, increasing the gas discharge volume of the exhaust pipeline, further strengthening the negative pressure intensity of the biological laboratory, compensating for the reduced negative pressure at the moment of opening the door through the enhanced negative pressure, preventing the flow and diffusion of aerosol and microbial particles, and improving the isolation effect of the biological laboratory. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings are used to provide 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 to the present invention. In the drawings:

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

[0025] Figure 2 It is the exploded structural schematic diagram 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 the overall structural schematic diagram of the air shower room of the present invention.

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

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

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

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

[0032] Figure 9 This is a schematic structural diagram of the fixing member and the limiting member of the present invention.

[0033] Figure 10 This is a schematic internal structural diagram of the fixing member and the limiting member of the present invention.

[0034] Figure 11 This is a schematic structural diagram of the connecting member and the first sealing member of the present invention.

[0035] Figure 12 This is a schematic internal structural diagram of the fixing member of the present invention.

[0036] Figure 13 For the present invention Figure 6 An enlarged view of the structure of part A in

[0037] Figure 14 For the present invention Figure 12 An enlarged view of the structure of part B in

[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 supply fan; 5, fresh air system; 51, intake pipeline; 52, exhaust pipeline; 53, connecting pipe; 6, flow guiding mechanism; 61, flow guiding pipe; 62, speed increasing pipe; 63, outlet pipe; 64, drainage pipe; 65, one-way valve; 7, energy storage mechanism; 71, flow conversion box; 72, first partition board; 73, exhaust box; 74, intake box; 75, adjustment box; 76, connecting piece; 77, proportional valve; 78, first through groove; 79, avoidance groove; 710, limit sliding groove; 711, first plugging piece; 712, sliding block; 713, fixing piece; 714, guiding groove; 715, piston plate; 716, first elastic piece; 717, flow guiding hole; 718, second plugging piece; 719, air outlet hole; 720, filter screen; 721, second through groove; 722, limiting piece; 723, accommodating groove; 724, limit clamping block; 725, second elastic piece; 726, limiting groove; 727, convex block; 728, clamping groove; 729, adjustment groove; 730, limiting column; 731, third elastic piece; 732, second partition board; 733, first chamber; 734, second chamber; 735, clamping piece; 736, pressing piece; 737, limiting plate; 738, installation groove; 739, movable rod; 740, movable plate; 741, fourth elastic piece; 742, third through groove. Specific implementation mode

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1

[0041] In the actual process, the air shower room 4 performs air shower purification under normal pressure. Each time a staff member enters the laboratory from the air shower room 4, when opening the isolation door of the air shower room 4, the gas inside the air shower room 4 will flow towards the laboratory 1 in a negative pressure state, and the dust inside the air shower room 4 will be carried into the laboratory 1. If this continues for a long time, it will affect the working environment of the laboratory 1.

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

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

[0044] The fresh air system 5 further 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, and can automatically adjust the operation state of the equipment according to the specific situation of the laboratory 1, so as to keep the environment of the laboratory 1 comfortable. The fan is provided at the air inlets and outlets of the intake pipeline 51 and the exhaust pipeline 52 to assist the air intake and exhaust inside the laboratory 1. The filtering device is used to filter the gas entering the interior of the laboratory 1 and the gas discharged from the interior of the laboratory 1. The control system, the fan, and the filtering device are all prior arts and will not be elaborated here.

[0045] The air shower room 4 further includes a blower 43, a filter, an isolation door, a distribution box, nozzles, and an infrared detector. When a staff member enters the air shower room 4, they can be detected by the infrared detector for blowing. The blower 43 is connected to the outside through a pipeline and is used to supply air to the interior of the air shower room 4. The gas enters the interior of the static pressure box 42 through the blower 43, can be filtered through the filter, and then blows into the air corridor 41 through the nozzles. This is prior art and will not be elaborated.

[0046] Such as Figures 5 to 11As shown, a connecting piece 76 is fixedly connected inside the flow diversion box 71. A first through groove 78 communicating with the diversion pipe 61 and the air shower room 4 is opened inside the connecting piece 76. An avoidance groove 79 communicating with the first through groove 78 is opened at the top of the connecting piece 76. Two symmetrically arranged limiting sliding grooves 710 are opened on the inner wall of the first through groove 78. A first plugging piece 711 is slidably connected inside the first through groove 78. A slider 712 is slidably connected inside each limiting sliding groove 710. Each slider 712 is fixedly connected to the outer wall of the first plugging piece 711. The connection part between the first through groove 78 and the avoidance groove 79 is arranged as a wedge-shaped surface. The top sides of the two sliders 712 away from each other are arranged as wedge-shaped surfaces. The diameter of the avoidance groove 79 is larger than that of the first through groove 78.

[0047] Under normal conditions, that is, when the air shower room 4 is not working, at this time, under the action of its own gravity, the first plugging piece 711 is located at the bottom of the first through groove 78, and the slider 712 is at the bottom of the limiting sliding groove 710. The first plugging 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 and the pressure increases, the gas can push the first plugging piece 711 to move upward inside the first through groove 78, enabling the first plugging piece 711 to enter the inside of the avoidance groove 79. Since there is a gap between the outer wall of the first plugging piece 711 and the avoidance groove 79, the gas can enter the inside of the diversion pipe 61 through the gap. At this time, the first plugging piece 711 can be kept at the top of the avoidance groove 79 under the blowing force of the wind. When the air shower room 4 stops blowing air, the first plugging 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 sliding grooves 710 one by one. And one ends of the two fixing pieces 713 close to the flow diversion box 71 penetrate through the flow diversion box 71 and are fixedly connected to the outer wall of the connecting piece 76. A guiding groove 714 is opened inside each fixing piece 713.

[0049] A piston plate 715 is slidably connected inside each adjustment box 75. A first elastic member 716 is connected between the bottom of each piston plate 715 and the inner wall of the corresponding adjustment box 75. A diversion hole 717 communicating with the corresponding static pressure box 42 is opened at the bottom of each adjustment box 75. A second plugging piece 718 slidably connected to the corresponding diversion hole 717 is fixedly connected to the bottom of each piston plate 715. An air outlet hole 719 communicating with the corresponding adjustment box 75 is opened on one side of each adjustment box 75 located in the buffer chamber 3. And a filter screen 720 is arranged inside each air outlet hole 719.

[0050] When the gas inside the intake pipeline 51 enters the inside of the regulating box 75, it can enhance the air pressure inside the regulating box 75, and can push the piston plate 715 to move towards 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 hole 719. At the same time, the second blocking member 718 can enter the diversion hole 717 to block the diversion hole 717, so as to prevent the gas that subsequently enters the static pressure box 42 from entering the regulating box 75.

[0051] As Figures 9 to 14 shown, a second through groove 721 penetrating the corresponding fixing member 713 is provided at 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 groove 721. A receiving groove 723 is provided on one side of each limiting member 722 close to the connecting member 76. A limiting block 724 is slidably connected inside each receiving groove 723. A second elastic member 725 is connected between one side of each limiting block 724 close to the limiting member 722 and the inner wall of the corresponding receiving groove 723.

[0052] Two symmetrically arranged limiting grooves 726 are provided on the inner wall of each receiving groove 723. A plurality of equally spaced convex blocks 727 are provided inside each limiting groove 726. A clamping groove 728 is provided at the top of one side of each limiting block 724 close to the connecting member 76. The bottom of one side of each limiting block 724 close to the connecting member 76 is arc-shaped. Two symmetrically arranged adjusting grooves 729 are provided inside each limiting block 724. The two adjusting grooves 729 correspond to the two limiting grooves 726 one by one. A limiting post 730 is slidably connected inside each adjusting groove 729. A third elastic member 731 is connected between one side of each limiting post 730 away from the inner wall of the receiving groove 723 and the inner wall of the corresponding adjusting groove 729.

[0053] When the limiting member 722 moves towards the static pressure box 42 inside the second through groove 721, the arc-shaped surface at the bottom of the limiting block 724 will first contact the clamping member 735. The clamping member 735 can squeeze the limiting block 724 to partially enter the receiving groove 723 and 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 and enter the clamping groove 728. The second elastic member 725 can be reset to enable the clamping member 735 to limit the limiting block 724.

[0054] A second partition plate 732 is fixedly connected to the inside of each guiding groove 714. The second partition plate 732 divides the inside of the guiding 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 near the second through groove 721. An extrusion member 736 that is slidably connected to the inner wall of the second chamber 734 is provided at the top of each clamping member 735. A limiting plate 737 is fixedly connected to one side of each extrusion member 736 close to the second partition plate 732.

[0055] An installation groove 738 is formed in each second partition plate 732. A movable rod 739 that is fixedly connected to the corresponding limiting plate 737 is slidably connected to the inside of each installation groove 738. A movable plate 740 that is slidably connected to the inner wall of the first chamber 733 is fixedly connected to the outer wall of each movable rod 739. A fourth elastic member 741 is connected between each movable plate 740 and the second partition plate 732. A third through groove 742 that communicates with the corresponding first chamber 733 is formed in the inner wall of each limiting chute 710. 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, under the action of the fourth elastic member 741, the end of the movable rod 739 away from the limiting plate 737 can pass through the third through groove 742 and enter the corresponding limiting chute 710. At this time, the limiting column 730 is completely pressed into the inside of the adjustment groove 729 by the inner wall of the receiving groove 723, and the third elastic member 731 is in a compressed state. When the first plugging member 711 moves upward in the first through groove 78, the upward movement of the slider 712 on the limiting chute 710 can cause the wedge-shaped surface at the top to squeeze the movable rod 739, enabling the movable rod 739 to drive the extrusion member 736 to move towards the limiting member 722, enabling the movable plate 740 to squeeze the fourth elastic member 741. The extrusion member 736 can enter the clamping groove 728 and squeeze the limiting block 724 completely into the inside of the receiving groove 723, can squeeze the second elastic member 725, enabling the limiting column 730 to completely enter the inside of the limiting groove 726. The third elastic member 731 is reset. Subsequently, during the reset process of the second elastic member 725, the limiting column 730 can intermittently contact the convex block 727, providing resistance to the reset of the second elastic member 725, lengthening the reset time, and facilitating the separation of the limiting block 724 from the limit of the clamping member 735.

[0057] The connection between the limiting groove 726 and the adjustment groove 729 is provided with a wedge-shaped surface, aiming to facilitate the entry of the limiting column 730 from the inside of the limiting groove 726 into the receiving groove 723.

[0058] It should be noted that when the air shower chamber 4 is not working, the gas inside the intake pipeline 51 can evenly enter the interiors of the two regulating chambers 75 through the proportional valve 77, which can increase the internal pressure of the regulating chambers 75, can push the piston plate 715 to move towards the static pressure chamber 42, during which the piston plate 715 can compress the first elastic member 716, can drive the limiting member 722 to move downward inside the second through groove 721, and the bottom arc surface of the limiting block 724 will first contact the clamping member 735. The clamping member 735 can squeeze the limiting block 724 to partially enter the accommodating groove 723, 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 and can enter the clamping groove 728. The second elastic member 725 can be reset, enabling the clamping member 735 to limit the limiting block 724, realizing the energy storage of the first elastic member 716. At the same time, when the limiting member 722 moves to the bottom limit position, the gas inside the regulating chamber 75 can enter the buffer chamber 3 through the air outlet hole 719 and the filter screen 720, and the second blocking member 718 can enter the diversion hole 717 to block the diversion hole 717. When a person is detected inside the air shower chamber 4 and air blowing is carried out, the gas can push the first blocking member 711 to move upward inside the first through groove 78, enabling the first blocking member 711 to enter 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 diversion pipe 61 through the gap. During the process of the first blocking member 711 moving upward inside the first through groove 78, the wedge-shaped surface at the top of the slider 712 can squeeze the movable rod 739, enabling the movable rod 739 to drive the squeezing member 736 to move towards the limiting member 722, enabling the movable plate 740 to squeeze the fourth elastic member 741. The squeezing member 736 can completely enter the clamping groove 728 and squeeze the limiting block 724 to completely enter the accommodating groove 723, can squeeze the second elastic member 725, enabling the limiting column 730 to enter the limiting groove 726, enabling the limiting block 724 to be released from the limit of the clamping member 735. At this time, the squeezing member 736 can limit the limiting block 724. Subsequently, when the air shower chamber 4 stops blowing air, the first blocking member 711 can, under the action of its own gravity, return to the bottom of the first through groove 78 again. The fourth elastic member 741 is quickly reset, and the squeezing member 736 is released from limiting the limiting block 724, enabling the first elastic member 716 to be reset and release the stored energy. The second blocking member 718 no longer blocks the diversion hole 717. The piston plate 715 can extract the gas inside the static pressure chamber 42, enabling the gas in the air corridor 41 to pass through the nozzle and enter the static pressure chamber 42, enabling the pressure inside the air corridor 41 to 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 the dust inside the air corridor 41 can be accelerated. Moreover, when the isolation door of the air shower chamber 4 is opened, the flow of the gas inside the air shower chamber 4 towards the laboratory 1 can be effectively inhibited. It should be noted the degree of negative pressure inside the air shower chamber 4.It should be lower than the internal pressure of the adjacent laboratory 1, and 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 pressing member 736 moves towards the connecting member 76, at this time, the second elastic member 725 can be reset, enabling the limit block 724 to move towards the direction close to the clamping member 735. The limit post 730 can intermittently contact the convex block 727, providing resistance to the resetting of the second elastic member 725 and lengthening the reset time. During this period, the limit block 724 can be disengaged from the limits of the clamping member 735 and the pressing member 736, enabling the first elastic member 716 to store and release energy and perform resetting.

[0060] In summary, through the setting of the energy storage mechanism 7 of the present invention, when the air inlet pipeline 51 intakes air, the gas can enter the interior of the regulating box 75 and push the piston plate 715 towards the direction close to the static pressure box 42. During this process, the clamping member 735 limits the limit block 724 and stores energy for the first elastic member 716. When it is detected that there is someone inside the air shower room 4 and blowing is carried out, the gas can push the first blocking member 711 to move upward inside the first through groove 78. The wedge-shaped surface at the top of the slider 712 can squeeze the movable rod 739, enabling the movable rod 739 to drive the pressing member 736 to move towards the limiting member 722. The pressing member 736 can completely enter the clamping groove 728 and squeeze the limit block 724 to completely enter the receiving groove 723, enabling the limit block 724 to be disengaged from the limit of the clamping member 735 and enabling the pressing member 736 to limit the limit block 724. Subsequently, when the air shower room 4 stops blowing, the first blocking member 711 can return to the bottom of the first through groove 78 under the action of its own gravity. The fourth elastic member 741 is reset, the pressing member 736 is disengaged from limiting the limit block 724, the first elastic member 716 is reset, the piston plate 715 can extract the gas inside the static pressure box 42, enabling the pressure inside the air corridor 41 to 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 the dust inside the air corridor 41 can be accelerated. When the isolation door of the air shower room 4 is opened, the flow of the gas inside the air shower room 4 towards the interior of the laboratory 1 can be effectively inhibited, improving the working environment of the biological laboratory 1.

[0061] Embodiment 2

[0062] On the basis of the above embodiments, before entering Laboratory 1, the staff need to wear protective clothing first, and then pass through the air shower room 4 to remove the dust carried on their bodies to achieve a 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 polluting the external environment. Every time the staff enter Laboratory 1, opening the partition door of Laboratory 1 will break the negative pressure state inside Laboratory 1, affecting the effect of Laboratory 1 in preventing the flow and diffusion of aerosols and microbial particles.

[0063] As Figure 2 shown, it further includes a diversion mechanism 6. The diversion mechanism 6 includes a diversion pipe 61 arranged at the top of the air shower room 4 and communicating with the inside of the air shower room 4. The other end of the diversion pipe 61 is fixedly connected to an acceleration pipe 62. The other end of the acceleration pipe 62 is fixedly connected to an air outlet pipe 63 for exhausting to the outside. The outer wall of the acceleration pipe 62 is fixedly connected to a diversion pipe 64 communicating with the exhaust air pipeline 52. A one-way valve 65 is provided at the connection between the diversion pipe 64 and the exhaust air pipeline 52, and the gas inside the exhaust air pipeline 52 can enter the inside of the diversion pipe 64 through the one-way valve 65.

[0064] The pipe diameter of the acceleration pipe 62 is smaller than that of the diversion pipe 61 and the air outlet pipe 63. The purpose is to increase the flow rate of the gas by reducing the cross-sectional area.

[0065] Since the negative pressure inside the biosafety laboratory 1 is regulated and controlled by the intake air volume and the exhaust air volume, in actual use, when a person is detected inside the air shower room 4 and the air blowing is carried out, the gas can push the first blocking member 711 to move upward inside the first through groove 78, and 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 diversion pipe 61 through the gap, and then enter the acceleration pipe 62 for speed increase. According to Bernoulli's principle, the faster the flow rate, the lower the pressure in the vicinity. The pressure at the connection between the diversion pipe 64 and the acceleration pipe 62 is lower than the pressure inside the exhaust air pipeline 52, enabling the gas inside the exhaust air pipeline 52 to pass through the diversion pipe 64 and the one-way valve 65 and enter the inside of the air outlet pipe 63 for external discharge. It can increase the gas discharge volume of the exhaust air pipeline 52, further strengthen the negative pressure intensity of the biosafety laboratory 1, enhance the negative pressure inside the biosafety laboratory 1 in advance, prepare for the subsequent entry of the staff into Laboratory 1, compensate for the reduced negative pressure at the moment of opening the door through the enhanced negative pressure, avoid the effect of the biosafety laboratory 1 on preventing the flow and diffusion of aerosols and microbial particles at the moment of opening the door, and improve the isolation effect inside Laboratory 1.

[0066] With the provision of the flow guiding mechanism 6, when it is detected that there is someone inside the air shower 4 and blowing is in progress, the gas can push the first plugging member 711 to move upward inside the first through groove 78, enabling the first plugging member 711 to enter the inside of the avoidance groove 79. Since there is a gap between the outer wall of the first plugging member 711 and the avoidance groove 79, the gas can enter the inside of the flow guiding pipe 61 through the gap, and then enter the speed increasing pipe 62 to increase the speed. The faster the flow rate, the smaller the pressure in the vicinity, making the pressure at the connection between the drainage pipe 64 and the speed increasing pipe 62 lower than the pressure inside the exhaust air pipeline 52. This enables the gas inside the exhaust air pipeline 52 to pass through the drainage pipe 64 and the one-way valve 65 and enter the inside of the air outlet pipe 63 for discharge, which can increase the gas discharge volume of the exhaust air pipeline 52, further strengthen the negative pressure intensity of the biological laboratory 1, enhance the negative pressure inside the biological laboratory 1 in advance, and prepare for the subsequent entry of staff into the laboratory 1. By enhancing the negative pressure to compensate for the reduced negative pressure at the moment of opening the door, the effect of preventing the flow and diffusion of aerosol and microbial particles is achieved at the moment of opening the door of the biological laboratory 1, and the isolation effect of the biological laboratory 1 is improved.

[0067] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within 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); A connecting piece (76) is fixedly connected to the interior of the transfer box (71); a first through groove (78) communicating with the guide pipe (61) and the air shower chamber (4) is provided inside the connecting piece (76); two symmetrically arranged limiting slide grooves (710) are provided on the inner wall of the first through groove (78); a first blocking piece (711) is slidably connected to the interior of the first through groove (78); a sliding block (712) is slidably connected to the interior of each limiting slide groove (710); and the tops of the two sliding blocks (712) on the sides away from each other are arranged in a wedge-shaped surface; A fixing piece (713) is fixedly connected to the inner side of the top of each adjustment box (75), and a guide groove (714) is provided inside each fixing piece (713); 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 flow 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 flow guide hole (717) is fixedly connected to the bottom of each piston plate (715); and an air outlet hole (719) connected to the corresponding regulating box (75) is provided on one side of each regulating box (75) located at the buffer chamber (3); A second through slot (721) penetrating the corresponding fixing member (713) is formed on the top of each adjustment box (75); 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 piece (735) is fixedly connected to the inner wall of each second chamber (734) near the second through groove (721), and an extrusion piece (736) is provided on the top of each clamping piece (735) and is slidably connected to the inner wall of the second chamber (734); 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), 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).

2. The biosafety laboratory according to claim 1, characterized in that: The top of the connecting member (76) is provided with an avoidance groove (79) which is connected to the first through groove (78); each of the sliding blocks (712) is fixedly connected to the outer wall of the first blocking member (711); and the connection between the first through groove (78) and the avoidance groove (79) is arranged in a wedge-shaped surface.

3. The biosafety laboratory according to claim 2, characterized in that: The two fixing members (713) correspond to the two limiting sliding grooves (710) respectively, and the ends of the two fixing members (713) close to the flow transfer box (71) both penetrate the flow transfer box (71) and are fixedly connected to the outer wall of the connecting member (76).

4. The biosafety laboratory according to claim 3, characterized in that: A filter screen (720) is provided inside each of the air outlet holes (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: Each of the second through grooves (721) is slidably connected to a limiting member (722) fixedly connected to the corresponding piston plate (715); a receiving groove (723) is provided on a side of each of the limiting members (722) close to the connecting member (76); a limiting clamping block (724) is slidably connected to the inside of each of the receiving grooves (723); and a second elastic member (725) is connected between a side of each of the limiting clamping blocks (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: One side of each of the extrusion members (736) close to the second partition plate (732) is fixedly connected to a limiting plate (737).

9. The biosafety laboratory according to claim 8, characterized in that: A third through slot (742) connected to the corresponding first chamber (733) is provided on the inner wall of each of the limiting sliding slots (710), and each of the movable rods (739) can move inside the corresponding third through slot (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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