CN113368908A - High-safety biological safety cabinet and using method thereof - Google Patents
High-safety biological safety cabinet and using method thereof Download PDFInfo
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- CN113368908A CN113368908A CN202110922066.6A CN202110922066A CN113368908A CN 113368908 A CN113368908 A CN 113368908A CN 202110922066 A CN202110922066 A CN 202110922066A CN 113368908 A CN113368908 A CN 113368908A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01L1/00—Enclosures; Chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
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Abstract
The invention discloses a high-safety biological safety cabinet and a using method thereof, belonging to the field of biological safety cabinets, wherein a power-assisted leg guard is additionally arranged on the basis of the prior art to assist technicians to finish actions of rapidly leaving away from the safety cabinet, so that the safety coefficient is effectively improved, and the power-assisted leg guard has double guarantee functions, on one hand: when normal experiment operation is carried out, the shielding door is controlled to be opened and closed by utilizing the abutting action of the legs of the technical personnel and the power-assisted leg protector, so that the biological safety cabinet body is in a closed state when the technical personnel temporarily leave, and harmful gas cannot be leaked; on the other hand: after the airflow alarm is triggered, the power-assisted leg guard is pushed outwards to actively evacuate technicians, so that stay time is shortened, harmful gas is effectively prevented from being inhaled, and in addition, as the power-assisted leg guard extends outwards for a certain length, the walking personnel can be forced to be far away from the biological safety cabinet body, so that the interference on the airflow inside the biological safety cabinet body is effectively reduced.
Description
Technical Field
The invention relates to the field of biological safety cabinets, in particular to a high-safety biological safety cabinet and a using method thereof.
Background
The biological safety cabinet is a box-shaped air purification negative pressure safety device which can prevent aerosol from dissipating when some dangerous or unknown biological particles are contained in the experimental operation and treatment process. The protective screen is widely applied to scientific research, teaching, clinical examination and production in the fields of microbiology, biomedicine, genetic engineering, biological products and the like, and is the most basic safety protective equipment in the primary protective screen in the biological safety of laboratories.
The working principle of the biological safety cabinet is mainly that air in the cabinet is sucked outwards, so that the interior of the cabinet is kept in a negative pressure state, and workers are protected by vertical air flow; the outside air enters the safety cabinet after being filtered by a high efficiency air filter (HEPA filter) so as to avoid the pollution of a processed sample; the air in the cabinet is also filtered by the HEPA filter and then discharged to the atmosphere to protect the environment.
The biological safety cabinet is used as important equipment for protecting experiment operators, an air flow alarm in the biological safety cabinet is an indispensable device, the air flow alarm is used for prompting technicians to stop operating and keep away from the safety cabinet immediately, however, in actual operation, due to weak safety consciousness and not quick response of the technicians, evacuation is not timely enough and harmful gas is sucked by mistake, and the existing safety cabinet is not provided with corresponding guarantee measures.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a high-safety biological safety cabinet and a using method thereof, and the assistance leg protector is additionally arranged on the basis of the conventional biological safety cabinet to assist technicians to finish the action of rapidly leaving the safety cabinet, so that the safety coefficient is effectively improved, and the assistance leg protector has double guarantee functions, on one hand: when normal experiment operation is carried out, the shielding door is controlled to be opened and closed by utilizing the abutting action of the legs of the technical personnel and the power-assisted leg protector, so that the biological safety cabinet body is in a closed state when the technical personnel temporarily leave, and harmful gas cannot be leaked; on the other hand: after the airflow alarm is triggered, the power-assisted leg guard is pushed outwards to actively evacuate technicians, so that stay time is shortened, harmful gas is effectively prevented from being inhaled, and in addition, as the power-assisted leg guard extends to the outside of the biosafety cabinet body for a certain length, the walking personnel can be forced to be away from the biosafety cabinet body, so that the interference on airflow inside the biosafety cabinet body is effectively reduced.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A high-safety biological safety cabinet comprises a biological safety cabinet body, wherein the biological safety cabinet body comprises a control panel with a face recognition device and a shielding door with a servo motor, the biological safety cabinet body also comprises an airflow alarm, the servo motor on the shielding door is electrically connected with the airflow alarm, two power-assisted leg guards are arranged on the outer side of the bottom of the biological safety cabinet body, a sleeve is arranged at the bottom of the biological safety cabinet body, the inner part of the sleeve is connected with a sliding telescopic rod fixedly connected with the power-assisted leg guards through a spring, a pneumatic telescopic rod electrically connected with the airflow alarm is arranged on one side of the sleeve far away from the sliding telescopic rod, the output end of the pneumatic telescopic rod penetrates into the sleeve and abuts against the sliding telescopic rod, and a pressure sensor electrically connected with the airflow alarm and the servo motor is arranged on the inner wall of the sleeve close to the pneumatic telescopic rod, and the side wall of the sliding telescopic rod positioned in the sleeve is fixedly connected with a trigger block.
Further, the helping hand leg guard includes the semicircle ring backplate that two set up from top to bottom, and the semicircle ring backplate can and shank phase-match, and is applicable to not tall and short, fat thin people, the helping hand leg guard divide into ordinary model and electric shock model, and is provided with the electric shock ball of being connected with the air current alarm electricity on the electric shock model, and the amazing back of letting people know down through safe electric current to accomplish the action of withdrawing rapidly, effectively improve factor of safety.
Further, two the back of semicircle ring backplate is provided with the connecting plate of seting up T type spout, and the equal fixedly connected with in back of two semicircle ring backplate and T type spout sliding connection's T type slider, two connect through the mode of joint between the semicircle ring backplate, and pass through spring coupling between two semicircle ring backplate, the adjustable increase of distance between two semicircle ring backplate can increase the scope that covers the shank when the technical staff operation of standing like this to effectively ensure the effect of promoting the back and removing, also can avoid the human body to lose the focus and fall down.
Further, one of them lateral wall fixedly connected with trip of semicircle ring backplate, and the lateral wall of another semicircle ring backplate sets up the draw-in groove that matches with the trip, there is the button lateral wall of draw-in groove through spring coupling, and when initial condition, the trip card goes into the draw-in groove, and two semicircle ring backplate are as an organic whole this moment, and when pressing down the button, the button backs down the trip, and trip and draw-in groove separation under the elastic action to two semicircle ring backplate part, the coverage area of helping hand leg guard increases promptly like this.
Further, the biological safety cabinet body has been seted up near the bottom of shield door and has been stepped down the groove, and has the backplate through spring coupling in the groove of stepping down, and the backplate can be pressed down and can independently kick-back by the hand, withdraws a biological safety cabinet body back like this at the hand, and the backplate can block the liquid drop of splashing and effectively hinder harmful gas's leakage, and when people withdraw, if this moment still has on hand the article that has not come and has put down can be intercepted by the backplate, avoid being carried away and contaminated air.
Furthermore, the inner side surface of the guard plate is coated with an anti-corrosion layer so as to avoid being corroded by chemical reagents, and the upper part of the guard plate is fixedly connected with a silica gel pad, so that the comfort level of hands can be improved.
Further, the shielding door is connected with the output end of the servo motor through the transmission mechanism, the opening range of the shielding door is 15-30 cm, the opening range of the shielding door cannot be too large, otherwise, the head of a person is located at the air inlet, the risk of sucking harmful gas is increased, the opening range of the shielding door cannot be too small, and otherwise, the hand cannot be operated comfortably.
Furthermore, the length range of the power-assisted leg guard outside the biological safety cabinet body is 20-40 cm, the overall arrangement of the biological safety cabinet body is affected due to overlong length, the expected effect cannot be achieved, and the anti-collision strips are sleeved at the corners of the power-assisted leg guard, so that the legs are prevented from colliding with the power-assisted leg guard and being injured.
Furthermore, the flashing warning light is installed on the outer side of the power-assisted leg guard, the effect of prompting the passing person is achieved, the person can pay attention to the action under the foot, the fluorescent layer is coated on the outer surface of the power-assisted leg guard, and the prompting effect can be achieved at night or under the condition of dim light.
Further, a use method of the high-safety biological safety cabinet comprises the following steps:
s1, a technician trained and authorized professionally stands in front of the biological safety cabinet body to perform face recognition authentication, and operates the control panel to start the biological safety cabinet body after the authentication is successful so as to enable the biological safety cabinet body to run for one minute in advance, and the technician performs other preparation work in the process;
s2, if a technician chooses to sit on the pulley chair for operation, the two legs are respectively abutted against the two power-assisted leg guards in an end sitting state, then the two legs move forwards until the shielding door is opened, the operation can be carried out at the moment, when the airflow alarm gives an alarm, the airflow alarm gives a signal to the pneumatic telescopic rod, the pneumatic telescopic rod pushes the power-assisted leg guards outwards, so that the technician is helped to withdraw quickly and get away from the biological safety cabinet body to avoid sucking harmful gas, and the airflow alarm gives a signal to the servo motor at the same time to close the shielding door to avoid the harmful gas from leaking outwards;
s3, if the technician selects standing operation, the power-assisted leg guard is adjusted to enlarge the coverage area, the two legs are put into the power-assisted leg guard and move forwards, the operation is started after the shielding door is opened, when the airflow alarm gives an alarm, a signal is sent to the pneumatic telescopic rod, meanwhile, safety current is output to the electric shock ball, and the technician is stimulated to retreat.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is through add the helping hand leg guard on the basis of current biological safety cabinet and come supplementary technical staff to accomplish the action of keeping away from the safety cabinet rapidly, effectively improves factor of safety, and the helping hand leg guard has dual guarantee effect, on the one hand: when normal experiment operation is carried out, the shielding door is controlled to be opened and closed by utilizing the abutting action of the legs of the technical personnel and the power-assisted leg protector, so that the biological safety cabinet body is in a closed state when the technical personnel temporarily leave, and harmful gas cannot be leaked; on the other hand: after the airflow alarm is triggered, the power-assisted leg guard is pushed outwards to actively evacuate technicians, so that stay time is shortened, harmful gas is effectively prevented from being inhaled, and in addition, as the power-assisted leg guard extends to the outside of the biosafety cabinet body for a certain length, the walking personnel can be forced to be away from the biosafety cabinet body, so that the interference on airflow inside the biosafety cabinet body is effectively reduced.
(2) Helping hand leg guard includes the semicircle ring backplate that two set up from top to bottom, and semicircle ring backplate can and shank phase-match, and is applicable to not different height, fat thin people, and the helping hand leg guard divide into ordinary model and electric shock model, and is provided with the electric shock ball of being connected with the air current alarm electricity on the electric shock model, and the amazing back of letting people know by subconscious through safe electric current to accomplish the action of withdrawing rapidly, effectively improve factor of safety.
(3) The back of two semicircle ring backplate is provided with the connecting plate of seting up T type spout, and the equal fixedly connected with in back of two semicircle ring backplate and T type spout sliding connection's T type slider, connect through the mode of joint between two semicircle ring backplate, and pass through spring coupling between two semicircle ring backplate, the adjustable increase of distance between two semicircle ring backplate, can increase the scope that covers the shank when the technical staff operation of standing like this, thereby effectively ensure the effect of removing after promoting, also can avoid the human body to lose the focus and fall down.
(4) The lateral wall fixedly connected with trip of one of them semicircle ring backplate, and the lateral wall of another semicircle ring backplate sets up the draw-in groove that matches with the trip, and there is the button lateral wall of draw-in groove through spring coupling, and when initial condition, the trip card goes into the draw-in groove, and two semicircle ring backplate are as an organic whole this moment, and when pressing the button, the button is backed up the trip, and trip and draw-in groove separation under the elastic force effect to two semicircle ring backplate part, the coverage area of helping hand leg guard increases promptly like this.
(5) The groove of stepping down has been seted up near the bottom of shield door to biological safety cabinet body, and has the backplate through spring coupling in the groove of stepping down, the backplate can be pressed down and can independently kick-back by the hand, withdraws a biological safety cabinet body in the hand like this after, the backplate can block the liquid drop that splashes out and effectively hinder harmful gas's leakage, and when people withdraw, if this moment still have on hand the article that has not reached and put down can be intercepted by the backplate, avoid being carried away and contaminated air.
(6) The inner side surface of the guard plate is coated with an anti-corrosion layer so as to avoid being corroded by chemical reagents, and the upper part of the guard plate is fixedly connected with a silica gel pad, so that the comfort level of hands can be improved.
(7) The shielding door is connected with the output end of the servo motor through the transmission mechanism, the opening range of the shielding door is 15-30 cm, the opening amplitude of the shielding door cannot be too large, otherwise, the head of a person is located at the air inlet, the risk of sucking harmful gas is increased, the opening amplitude of the shielding door cannot be too small, and otherwise, the hand cannot be operated comfortably.
(8) The length range of the power-assisted leg guard outside the biological safety cabinet body is 20-40 cm, the overall arrangement of the biological safety cabinet body is affected due to overlong length, the expected effect cannot be achieved too much, and the anti-collision strips are sleeved at the corners of the power-assisted leg guard, so that the legs are prevented from colliding with the power-assisted leg guard and being injured.
(9) The flashing warning light is installed on the outer side of the power-assisted leg guard, the effect of prompting the passing person is achieved, the person can pay attention to the action under the foot, the fluorescent layer is coated on the outer surface of the power-assisted leg guard, and the prompting effect can be achieved at night or under the condition of dim light.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a side schematic view of the present invention;
FIG. 3 is a schematic diagram comparing the prior art of the present invention with the present invention;
FIG. 4 is a schematic view of the airflow within the cabinet of the present invention;
FIG. 5 is a schematic illustration of the invention in preparation prior to use;
FIG. 6 is a schematic diagram of the present invention before and after operation;
FIG. 7 is a schematic diagram of two operating states of the present invention;
FIG. 8 is a perspective view of two types of power-assisted leg guards of the present invention;
FIG. 9 is a schematic diagram of the pre-and post-adjustment status of the shock model of the present invention;
FIG. 10 is a cross-sectional view of a cannula according to the present invention;
fig. 11 is a schematic view showing the control operation of the sensing part of the present invention.
The reference numbers in the figures illustrate:
1 biological safety cabinet body, 2 control panel, 3 shield doors, 4 helping hand leg guards, 401 connecting plate, 402 trip, 403 draw-in groove, 5 sleeve pipes, 6 slip telescopic links, 601 trigger block, 7 pneumatic telescopic links, 8 pressure sensor, 9 electric impact balls, 10 backplate, 11 groove of stepping down.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1-11, a high-safety biosafety cabinet, referring to fig. 1, 2 and 4, includes a biosafety cabinet body 1, the biosafety cabinet body 1 includes a control panel 2 with a face recognition device and a screen door 3 with a servo motor (the mounting of the face recognition device on the control panel is a well-known technology well known to those skilled in the art), the screen door 3 is connected with an output end of the servo motor through a transmission mechanism (the transmission mechanism is the prior art), and the opening range of the screen door 3 is 15 cm to 30 cm, the opening range of the screen door 3 cannot be too large, otherwise the head of a person is located at an air inlet, thereby increasing the risk of sucking harmful gas, the opening range of the screen door 3 cannot be too small, otherwise the hand cannot be operated comfortably, a relief groove 11 is opened near the bottom of the screen door 3 of the biosafety cabinet body 1, the protection plate 10 is connected with the abdicating groove 11 through a spring, the protection plate 10 can be pressed down by the hand and can rebound automatically, so that after the biological safety cabinet body 1 at the hand evacuation position, the protection plate 10 can block splashed liquid drops and effectively prevent harmful gas from leaking, and when people withdraw, if objects which are not placed on the hand can be intercepted by the protection plate 10 at the moment, the objects are prevented from being carried out to pollute air, the inner side surface of the protection plate 10 is coated with an anti-corrosion layer to prevent the objects from being corroded by chemical agents, and the upper part of the protection plate 10 is fixedly connected with a silica gel pad, so that the comfort level of the hand can be improved;
referring to fig. 2, 3 and 11, the biological safety cabinet body 1 further includes an air flow alarm (prior art), a servo motor on the shielding door 3 is electrically connected with the air flow alarm, two power-assisted leg guards 4 are arranged on the outer side of the bottom of the biological safety cabinet body 1, the length range of the power-assisted leg guard 4 outside the biological safety cabinet body 1 is 20-40 cm, overlong affects the overall arrangement of the biological safety cabinet body 1, too much the biological safety cabinet body cannot achieve the expected effect, and the corners of the power-assisted leg guard 4 are sleeved with anti-collision strips to prevent the legs from colliding with the power-assisted leg guard 4 and being injured, flashing warning lights are installed on the outer sides of the power-assisted leg guards 4 to prompt passing people, so that people pay attention to the action under feet, fluorescent layers are coated on the outer surfaces of the power-assisted leg guards 4, the prompting effect can be achieved at night or under the condition of dim light, the power-assisted leg guards 4 include two semicircular guard plates arranged up and down, the semicircular guard plates can be matched with legs and are suitable for people with different heights and slimness, the power-assisted leg guards 4 are divided into a common model and an electric shock model, electric shock balls 9 (the principle of the electric shock rods is the same, but the current is in a safe range) electrically connected with the airflow alarm are arranged on the electric shock model, and people can retreat subconsciously through stimulation of safe current, so that the action of quickly evacuating is completed, and the safety coefficient is effectively improved;
referring to fig. 8 and 9, the back parts of the two semicircular ring guard plates are provided with a connecting plate 401 provided with a T-shaped chute, the back parts of the two semicircular ring guard plates are fixedly connected with a T-shaped slide block connected with the T-shaped chute in a sliding manner, the two semicircular ring guard plates are connected in a clamping manner and connected through a spring, and the distance between the two semicircular ring guard plates can be adjusted and increased, so that the range of covering legs can be enlarged when a technician stands for operation, the effect of pushing to pull back is effectively guaranteed, and the human body can be prevented from losing the center of gravity and falling down;
referring to fig. 9, a hook 402 is fixedly connected to a side wall of one of the semicircular guard plates, a slot 403 matched with the hook 402 is formed in a side wall of the other semicircular guard plate, a button is connected to a side wall of the slot 403 through a spring, the hook 402 is clamped into the slot 403 in an initial state, the two semicircular guard plates are integrated, when the button is pressed, the button pushes the hook 402 open, the hook 402 is separated from the slot 403 under the action of elastic force, and thus the two semicircular guard plates are separated, and the coverage area of the power-assisted leg guard 4 is increased;
referring to fig. 2 and 10, a sleeve 5 is installed at the bottom of a biosafety cabinet body 1, the interior of the sleeve 5 is connected with a sliding telescopic rod 6 fixedly connected with a power-assisted leg guard 4 through a spring, a pneumatic telescopic rod 7 electrically connected with an airflow alarm is installed at one side of the sleeve 5 far away from the sliding telescopic rod 6, the output end of the pneumatic telescopic rod 7 penetrates into the sleeve 5 and abuts against the sliding telescopic rod 6, a pressure sensor 8 (prior art) electrically connected with the airflow alarm and a servo motor is installed on the inner wall of the sleeve 5 close to the pneumatic telescopic rod 7, and a trigger block 601 is fixedly connected to the side wall of the sliding telescopic rod 6 located inside the sleeve 5;
referring to fig. 11, the method of using the present invention includes the following steps:
referring to fig. 4, 5 and S1, a technician trained professionally and authorized firstly stands in front of the biosafety cabinet body 1 to perform face recognition authentication, and operates the control panel 2 to start the biosafety cabinet body 1 after the authentication is successful, so that the biosafety cabinet body 1 runs for 5 to 10 minutes in advance, and the technician performs other preparation work in the process;
referring to fig. 6, S2, if the technician chooses to sit on the roller chair for operation, the technician respectively supports two legs against two power-assisted legs 4 in the sitting state, and then moves forward until the screen door 3 is opened, and at the same time, the operation can be performed, when the airflow alarm gives an alarm, the airflow alarm gives a signal to the pneumatic telescopic rod 7, and the pneumatic telescopic rod 7 pushes the power-assisted legs 4 outwards, so as to help the technician to rapidly withdraw and keep away from the biosafety cabinet body 1, thereby avoiding sucking harmful gas, and the airflow alarm gives a signal to the servo motor at the same time, so as to close the screen door 3 and avoid the harmful gas from leaking;
referring to fig. 7 and S3, if the technician selects standing operation, the power-assisted leg guard 4 is adjusted to increase the coverage area, and the two legs are put into the power-assisted leg guard 4 and move forward, and the operation is started after the shielding door 3 is opened, and when the airflow alarm gives an alarm, a signal is sent to the pneumatic telescopic rod 7 and a safety current is output to the electric shock ball 9 to stimulate the technician to retreat.
The working principle of the structure part of the device is as follows: after the legs are put into the power-assisted leg guards 4, the body moves forwards to enable the sliding telescopic rod 6 to be retracted into the sleeve 5, when the trigger block 601 touches the pressure sensor 8, the pressure sensor 8 enables the shield door 3 to be opened, at the moment, the hand of a technician can extend into the biological safety cabinet body 1 to operate, the hand rack presses the biological safety cabinet body down on the shield plate 10, when the technician temporarily leaves, the hand firstly extends out of the biological safety cabinet body 1, then the trigger block 601 is separated from the pressure sensor 8 when the legs are withdrawn backwards, at the moment, the shield door 3 is closed, therefore, when a person passes through the biological safety cabinet body 1, the air flow in the biological safety cabinet body 1 cannot be interfered, when an air flow alarm gives an alarm, the pneumatic telescopic rod 7 is started to push the sliding telescopic rod 6 outwards to help the technician to rapidly leave away from the biological safety cabinet body 1, and simultaneously, the shield door 3 is closed, therefore, the outward leakage passage of polluted air in the biological safety cabinet body 1 can be cut off, inhalation by the technician is also avoided.
Through add helping hand leg guard 4 on the basis of current biological safety cabinet and come supplementary technical staff to accomplish the action of keeping away from the safety cabinet rapidly, effectively improve factor of safety, helping hand leg guard 4 has dual guarantee effect, on the one hand: when normal experiment operation is carried out, the shielding door 3 is controlled to be opened and closed by utilizing the abutting action of the legs of the technical personnel and the power-assisted leg protector 4, so that the biological safety cabinet body 1 is in a closed state when the technical personnel temporarily leave, and harmful gas cannot be leaked; on the other hand: after the airflow alarm is triggered, the power-assisted leg guard 4 is pushed outwards to actively evacuate the technical staff, so that stay time is shortened, harmful gas is effectively prevented from being sucked, and in addition, as the power-assisted leg guard 4 extends to the outside of the biological safety cabinet body 1 by a certain length, the walking staff can be forced to be far away from the biological safety cabinet body 1, so that the interference on the airflow inside the biological safety cabinet body 1 is effectively reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a biological safety cabinet of high security, includes biological safety cabinet body (1), biological safety cabinet body (1) is including control panel (2) that have face recognition device and shield door (3) that have servo motor, the inside of biological safety cabinet body (1) still includes the air current alarm, and the servo motor on shield door (3) is connected its characterized in that with the air current alarm electricity: the bottom outside of biological safety cabinet body (1) is provided with two helping hand leggings (4), sleeve pipe (5) are installed to the bottom of biological safety cabinet body (1), and the inside of sleeve pipe (5) have through spring coupling with helping hand leggings (4) fixed connection's slip telescopic link (6), sleeve pipe (5) are kept away from one side of slip telescopic link (6) and are installed pneumatic telescopic link (7) of being connected with the air current alarm electricity, and the output of pneumatic telescopic link (7) run through to in sleeve pipe (5) and offset with slip telescopic link (6), sleeve pipe (5) are close to the inner wall of pneumatic telescopic link (7) and install pressure sensor (8) of being connected with air current alarm and servo motor electricity, and are located fixedly connected with trigger block (601) on the inside slip telescopic link (6) lateral wall of sleeve pipe (5).
2. A high safety biosafety cabinet according to claim 1, wherein: the power-assisted leg guard (4) comprises two semicircular guard plates which are vertically arranged, the power-assisted leg guard (4) is divided into a common model and an electric shock model, and an electric shock ball (9) which is electrically connected with the airflow alarm is arranged on the electric shock model.
3. A high safety biosafety cabinet according to claim 2, wherein: two the back of semicircle ring backplate is provided with connecting plate (401) of seting up T type spout, and the equal fixedly connected with in back of two semicircle ring backplate and T type spout sliding connection's T type slider, two connect through the mode of joint between the semicircle ring backplate, and pass through spring coupling between two semicircle ring backplate.
4. A high safety biosafety cabinet according to claim 3, wherein: one of them lateral wall fixedly connected with trip (402) of semicircle ring backplate, and draw-in groove (403) that match with trip (402) are seted up to the lateral wall of another semicircle ring backplate, there is the button lateral wall of draw-in groove (403) through spring coupling.
5. A high safety biosafety cabinet according to claim 1, wherein: biological safety cabinet body (1) is close to the bottom of shield door (3) and has been seted up groove of stepping down (11), and has backplate (10) through spring coupling in the groove of stepping down (11).
6. A high-safety biosafety cabinet according to claim 5, wherein: the inner side surface of the guard plate (10) is coated with an anti-corrosion layer, and the upper part of the guard plate (10) is fixedly connected with a silica gel pad.
7. A high safety biosafety cabinet according to claim 1, wherein: the shielding door (3) is connected with the output end of the servo motor through a transmission mechanism, and the opening range of the shielding door (3) is 15-30 cm.
8. A high safety biosafety cabinet according to claim 1, wherein: the length range of the power-assisted leg guard (4) outside the biological safety cabinet body (1) is 20-40 cm, and the corners of the power-assisted leg guard (4) are sleeved with anti-collision strips.
9. A high safety biosafety cabinet according to claim 1, wherein: flashing warning lights are installed on the outer sides of the power-assisted leg guards (4), and fluorescent layers are coated on the outer surfaces of the power-assisted leg guards (4).
10. The use method of a high-safety biosafety cabinet according to any one of claims 1 to 9, wherein: the method comprises the following steps:
s1, a technician trained by a professional and authorized firstly stands in front of the biological safety cabinet body (1) to perform face recognition authentication, and operates the control panel (2) to start the biological safety cabinet body (1) after the authentication is successful so as to enable the biological safety cabinet body (1) to operate for 5-10 minutes in advance, and the technician performs other preparation work in the process;
s2, if a technician selects to sit on the pulley chair for operation, the two legs are respectively abutted against the two power-assisted leg guards (4) in an end sitting state, then the pulley chair moves forwards until the shielding door (3) is opened, the operation can be carried out at the moment, when the airflow alarm gives an alarm, the airflow alarm gives a signal to the pneumatic telescopic rod (7), and the pneumatic telescopic rod (7) pushes the power-assisted leg guards (4) outwards, so that the technician is helped to quickly withdraw and keep away from the biosafety cabinet body (1) to avoid sucking harmful gas, and the airflow alarm simultaneously gives a signal to the servo motor to close the shielding door (3) to avoid the harmful gas from leaking outwards;
s3, if the technician selects standing operation, the power-assisted leg guard (4) is adjusted to enlarge the coverage area, the two legs are put into the power-assisted leg guard (4) and move forwards, the operation is started after the shielding door (3) is opened, after the air flow alarm gives an alarm, the signal is sent to the pneumatic telescopic rod (7), meanwhile, safe current is output to the electric shock ball (9), and the technician is stimulated to retreat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114392778A (en) * | 2022-01-27 | 2022-04-26 | 青岛九维医学创新研究院有限公司 | Control system of biological safety cabinet |
| CN114471748A (en) * | 2022-01-27 | 2022-05-13 | 青岛九维医学创新研究院有限公司 | Biological safety cabinet with leakage alarm function |
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| CN113368908B (en) | 2021-10-12 |
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