CN215234259U - Biological safety cabinet - Google Patents
Biological safety cabinet Download PDFInfo
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- CN215234259U CN215234259U CN202120002328.2U CN202120002328U CN215234259U CN 215234259 U CN215234259 U CN 215234259U CN 202120002328 U CN202120002328 U CN 202120002328U CN 215234259 U CN215234259 U CN 215234259U
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- transmission
- transmission shaft
- door body
- limiting element
- torque limiting
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Abstract
The utility model discloses a biological safety cabinet, including: the cabinet body is provided with an operation opening; a door body; drive arrangement, with the door body transmission connection to drive the door body and remove in order to close or open the operation mouth, it includes: the first transmission shaft is used for outputting power; the transmission component is fixedly connected with the first transmission shaft; one end of the transmission belt is connected with the door body, and the other end of the transmission belt is wound on the transmission component; the first bracket is fixedly arranged on the cabinet body; a torque limiting element mounted on the first bracket; and the second transmission shaft is arranged at one end of the driving device opposite to the first transmission shaft and is fixedly connected with the driving device, the second transmission shaft is connected with the torque limiting element, and when the torque on the second transmission shaft is greater than the preset value of the torque limiting element, the second rotating shaft can rotate relative to the torque limiting element. Through the utility model provides a current biosafety cabinet can not drop down to have the excessive problem of polluted air current in outage back door.
Description
Technical Field
The utility model belongs to the technical field of biological safety equipment, concretely relates to improvement of biological safety cabinet structure.
Background
The biological safety cabinet is laboratory equipment, is the most important first line of defence line in the biological experiment basically, and contaminated gas when can preventing dangerous microbiological treatment spills over, also prevents simultaneously that the air outside the safety cabinet from getting into operation platform in the cabinet, and the protection experiment article do not receive external disturbance. In order to ensure the safety of the operator and prevent the operator from being accidentally injured. An operator can operate in the safety cabinet through the front window operation port, and negative pressure airflow sucked inwards through the front window operation port is used for protecting the safety of the operator; the downdraft filtered by the high-efficiency filter is used for protecting the experimental articles in the safety cabinet; the airflow is filtered by the high-efficiency filter and then discharged out of the safety cabinet to protect the environment.
Biohazard safety equipment is provided with preceding glass door in operation mouthful position department in the front, preceding glass door passes through the drive belt and connects drive arrangement, drive arrangement generally chooses for use the spool motor, it has drive unit and brake unit to embed in spool motor inside, when carrying out the use, drive unit through among the drive arrangement drives the drive belt and rotates, and then the removal of realizing preceding glass door is opened or is closed, the condition of unusual outage can appear in the biohazard safety equipment in the use, when the unusual outage appears, the tubulose motor can brake through its inside brake unit from taking, behind the outage brake, unable manual pulling electrically operated gate again, the contaminated gas in the working area exists and has the condition emergence of excessive.
SUMMERY OF THE UTILITY MODEL
The utility model discloses its glass door can not pull down the problem that has the excessive risk of contaminated air current to the biosafety cabinet among the prior art after the outage, the utility model provides a novel biosafety cabinet can pull down the door body through the artifical effort of applying when the biosafety cabinet outage, has avoided the excessive condition of contaminated air current to take place, has improved the security of biosafety cabinet.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
a biosafety cabinet comprising:
the cabinet body is provided with an operation opening;
a door body;
the driving device is in transmission connection with the door body so as to drive the door body to move to close or open the operation opening, and comprises a first transmission shaft for outputting power;
the transmission component is fixedly connected with the first transmission shaft;
one end of the transmission belt is connected with the door body, and the other end of the transmission belt is wound on the transmission part;
also includes: the first bracket is fixedly arranged on the cabinet body;
a torque limiting element mounted on the first bracket;
and the second transmission shaft is arranged at one end of the driving device opposite to the first transmission shaft and fixedly connected with the driving device, the second transmission shaft is connected and matched with the torque limiting element, and when the torque applied to the second transmission shaft is greater than the preset value of the torque limiting element, the second transmission shaft can rotate relative to the torque limiting element.
Preferably, an installation cavity is formed inside the transmission part, a driving element is arranged in the installation cavity, the driving element is connected with the first transmission shaft, a transmission wheel is arranged on the first transmission shaft, and the transmission wheel is fixedly connected with the transmission part.
Further, the method also comprises the following steps:
a second bracket;
and the tail plug is connected with one end of the transmission component provided with the first transmission shaft and is rotationally connected with the second support.
Further, the second transmission shaft is inserted into the torque limiting element.
Furthermore, sliding rails convenient for the door body to slide up and down are arranged on the cabinet body on two sides of the operation opening.
Furthermore, the driving belt is provided with at least 2 belts which are sequentially wound along the length direction of the driving part.
Further, the torque limiting element is a friction type torque limiter.
Furthermore, the device also comprises a limit detection element which is arranged at the bottom of the operation opening.
Furthermore, the sliding track is provided with 2 magnetic control switches for controlling the opening height of the door body, and the magnetic control switches are sequentially arranged along the length direction of the sliding track.
Furthermore, the door body is a glass door, and the bottom of the glass door is wrapped with an elastic rubber piece.
Compared with the prior art, the utility model discloses an advantage is with positive effect:
the utility model provides a biosafety cabinet, when setting up, connect a moment of torsion restriction component on the secondary drive axle of drive arrangement one end, after the biosafety cabinet is because of unusual outage locking, the manual pull-down door body of accessible, when the moment of torsion that the power produced of the manual pull-down door body is greater than the default of moment of torsion restriction component, the moment of torsion restriction component skids, make the secondary drive axle drive the whole relative moment of torsion restriction component of drive arrangement and rotate, whole drive arrangement rotates and must drive the transmission part and also do the rotation, and then make the drive belt rotate and open with relative transmission part, drive the door body and move down and close in order to realize the door body, the emergence of the excessive condition of polluted air current has been avoided.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is an overall structure diagram of the biosafety cabinet of the present invention;
fig. 2 is a matching structure diagram of the driving device and the torque limiting element of the bio-safety cabinet of the present invention.
Wherein, the cabinet body is 100; an operation opening-110; a door body-200; a drive device-300; a first drive shaft-310; a transmission member-320; a mounting cavity-321; a drive belt-330; a second drive shaft-340; a first support-400; torque limiting element-500; a second holder-600; and (5) inserting the tail part into the tail part of the shell to 700.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, 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.
The utility model provides an embodiment of biological safety cabinet, as shown in reference figures 1-2, including:
a cabinet 100, in which an operation region for operation is formed inside the cabinet 100, and an operation opening 110 is provided in the cabinet 100; the access opening 110 facilitates access to items located in the access area by an operator.
Preferably, the operation opening 110 in the present embodiment is disposed at the front end of the cabinet 100, which is a front operation opening 110, and is opened along the length direction of the cabinet 100 and disposed at a position close to the lower side of the cabinet 100.
And a door body 200 for closing or opening the operation opening 110. Preferably, the door body 200 in this embodiment is a glass door, so that an operator can see the articles inside the biosafety cabinet after closing the door body 200.
In order to realize the guiding of the door 200 moving up and down relative to the cabinet 100, when the door 200 is installed, sliding tracks convenient for the door 200 to slide are arranged on two sides of the cabinet 100, the door 200 is embedded in the sliding tracks, when the door 200 moves, the door 200 moves along the sliding tracks on the two sides, the guiding and limiting of the door 200 are realized through the sliding tracks, and the door 200 is prevented from falling off from the cabinet 100.
And the driving device 300 is in transmission connection with the door body 200 to drive the door body 200 to move so as to close or open the operation opening 110. Specifically, the driving device 300 in this embodiment is a tubular motor including a first transmission shaft (not shown) for outputting power, and preferably, the first transmission shaft (not shown) is a square shaft, which is disposed at the right side of the tubular motor,
the transmission member 320 is fixedly connected to the first transmission shaft (not shown), and preferably, the transmission member 320 is a transmission pipe, and an installation cavity 321 is formed in the transmission pipe, and both ends of the installation cavity 321 penetrate through the installation cavity.
A driving element is disposed in the mounting cavity 321, and the driving element corresponds to a driving power portion of a tubular motor for generating a driving force, the driving element is connected to the first transmission shaft (not shown), and a transmission wheel is disposed on the first transmission shaft (not shown), and the transmission wheel is fixedly connected to the transmission member 320.
Preferably, the driving wheel is a rotating wheel, which can be clamped on the first driving shaft (not shown) when being connected, and meanwhile, the driving wheel is correspondingly and fixedly connected with the driving pipe.
When specifically setting up, drive belt 330 can set up many, sets up along the length direction of a body 200, through setting up many drive belts 330, can provide great bearing capacity for a body 200 is more steady stable when reciprocating.
When the door body 200 is connected, one end of each of the plurality of transmission belts 330 is fixedly connected with the door body 200, and the other end of each of the plurality of transmission belts is wound on the transmission member 320.
Correspondingly, the brake unit is further disposed in the transmission tube in this embodiment, so that when the driving device 300 encounters a sudden power failure, the brake unit can brake the transmission member 320 and the first transmission shaft (not shown) to prevent the transmission from continuing.
When the door body 200 is closed, the first transmission shaft (not shown in the drawings) is driven to rotate by the action of the driving element, the first transmission shaft (not shown in the drawings) drives the transmission wheel fixedly connected above the first transmission shaft to rotate, the transmission wheel drives the transmission part 320 fixedly connected with the transmission wheel to rotate, and the transmission belt 330 is wound on the transmission part 320, so that when the transmission part 320 rotates, the transmission belt 330 can correspondingly rotate relative to the transmission part 320 and continuously expand, and the door body 200 connected with the transmission belt moves downwards, so that the door body 200 closes the operation opening 110.
When the door is opened, the driving element is controlled to act to drive the first transmission shaft (not shown in the figure) to rotate in the opposite direction, and then drive the transmission wheel and the transmission part 320 to rotate in the opposite direction, so that the transmission belt 330 wound on the transmission part 320 rotates around the transmission part 320 and is continuously tightened, and the door 200 is driven to move upwards to open the door 200.
For convenient control, the biosafety cabinet in this embodiment may further include a controller, which is in communication connection with the driving device 300, and meanwhile, the door opening control switch and the door closing control switch are correspondingly disposed, so that the door opening control switch and the door closing control switch are electrically connected to the controller, when the door body 200 needs to be opened or closed, the corresponding control switch may be pressed down, so that the control switch transmits a signal to the controller, and the controller controls the driving device 300 to perform a corresponding action.
The biosafety cabinet in this embodiment is further provided with a first bracket 400 which is fixedly arranged on the cabinet body 100.
And a torque limiting member 500 mounted on the first bracket 400, wherein the torque limiting member 500 is fixedly coupled to the first bracket 400 by screwing or bolting when being mounted.
Preferably, the torque limiting element 500 in this embodiment is a friction type torque limiter, which can bear a certain torque, and when the torque is greater than the internal preset value, the slip will occur.
A second transmission shaft 340, disposed at an end opposite to the driving device 300 and the first transmission shaft (not shown), and fixedly connected to the driving device 300, wherein the second transmission shaft 340 is connected to the torque limiting element 500, and the second transmission shaft 340 is preferably inserted into the torque limiting element 500.
When the torque on the second transmission shaft 340 is greater than the preset value of the torque limiting element 500, the second rotation shaft can rotate relative to the torque limiter.
Assuming that the door 200 of the biosafety cabinet in this embodiment is in the middle position and in the static state after being suddenly powered off, at this time, the first transmission shaft (not shown in the figure) and the transmission wheel and the transmission pipe in the driving device 300 cannot continuously transmit and rotate relatively due to the action of the brake unit, at this time, if the door 200 is manually pulled down, the door 200 cannot be pulled down and moved due to the action of the brake unit, and the operation opening 110 is in the exposed state due to the fact that the door 200 is not closed, which may cause the overflow of the polluted air flow.
The torque limiting element 500 is correspondingly disposed on the biosafety cabinet in this embodiment, when the door 200 stays at the middle position, the door 200 can be manually pulled by a person, and since the transmission member 320 and the first transmission shaft (not shown in the figure) are locked, when the door 200 is pulled, the door 200 applies an acting force to the driving device 300 formed by the transmission member 320, the first transmission shaft (not shown in the figure), the driving element, the brake unit, and the like through the transmission belt 330.
The preset value of the torque restriction element 500 is set to F2. At this time, a downward manual pulling force F3 is applied to the handle of the glass door, a certain torque is generated on the second transmission shaft 340 by the action of the acting force F3, when the acting force F3 applied to the handle of the glass door is large, a large torque is generated, when the generated torque value is larger than a preset value in the torque limiting element 500, the torque limiting element 500 slips, so that the second transmission shaft 340 fixedly connected with the driving device 300 can rotate relative to the torque limiting element 500 to drive the whole driving device 300 to rotate relative to the torque limiting element 500, when the whole driving device 300 rotates, the transmission member 320 also rotates, and when the transmission member 320 rotates, the transmission belt 330 wound on the transmission member 320 can be unfolded relative to the transmission member 320, so that the door body 200 can move downward along the sliding track until the glass door is closed.
In the manual pulling-down process of the door body 200, if the manual pulling force F3 is removed, the glass door stops moving downwards and stays at the current position.
The biosafety cabinet in this embodiment further comprises:
and a second bracket 600, wherein the second bracket 600 is fixed on the cabinet 100 and is arranged at the other end of the driving device 300 opposite to the first bracket 400.
The first bracket 400 and the second bracket 600 are respectively arranged at two ends of the driving device 300 to realize supporting and fixing of the driving device 300.
And a tail plug 700 connected to one end of the transmission member 320 having a first transmission shaft (not shown), and rotatably connected to the second bracket 600. Preferably, the tail insert 700 can be connected and matched with the second bracket 600 through parts such as a rotating bearing, when the driving device 300 rotates integrally, the tail insert 700 can rotate freely in 360 degrees relative to the second bracket 600 along with the driving device 300, so that the driving device 300 can rotate integrally on the pull-down door body 200, and interference influence on rotation of the driving device 300 cannot be caused.
In order to realize the detection after the door body 200 is pulled in place, the biosafety cabinet of the embodiment is further provided with a limiting detection element which is arranged at the bottom position of the operation opening 110, the limiting detection element can select a position detection sensor and is in communication connection with a controller, when the door body 200 is pulled down to place, the door body 200 can touch the limiting detection element, and the door body 200 can transmit a signal to the controller to generate an indication signal tone after touching the limiting detection element so as to prompt an operator that the door body 200 is pulled in place.
The sliding rail is also provided with 2 magnetic control switches for controlling the opening height of the door body, and the magnetic control switches are sequentially arranged along the length direction of the sliding rail.
The 2 magnetic control switches can be respectively in communication connection with the controller, the controller controls the driving device 300 to act, the magnetic control switches are respectively a first magnetic control switch and a second magnetic control switch, when the first magnetic control switch is triggered, the driving device 300 can control the door body 200 to move upwards to stop at the position of the normal opening height, and when the second magnetic control switch is triggered, the driving device 300 can control the door body 200 to move upwards to stop at the position of the highest opening height.
The biosafety cabinet provided in this embodiment, when setting up, connect a torque limiting element 500 on the second transmission shaft 340 of drive arrangement 300 one end, after the biosafety cabinet is locked because of the unusual outage, the door body 200 can be pulled down by hand, when the moment of torsion that the door body effort produced is greater than the default of moment of torsion limiting element 500 is pulled down by hand, moment of torsion limiting element 500 skids, make second transmission shaft 340 drive arrangement 300 whole relative moment of torsion limiting element 500 and rotate, whole drive arrangement 500 rotates and must drive transmission part 320 and also rotate, and then make drive belt 330 can rotate and open with relative transmission part 320 relative to transmission part 320, drive door body 200 and move down in order to realize that the door body 200 closes, the emergence of the excessive condition of polluted air current has been avoided.
Further, the bottom of the door body 200 is wrapped by an elastic rubber piece, and the door body 200 can be protected by the elastic rubber piece wrapped at the bottom of the door body 200, so that the door body 200 is prevented from being damaged by direct contact collision with the cabinet body 100 when falling to the bottom.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.
Claims (10)
1. A biosafety cabinet comprising:
the cabinet body is provided with an operation opening;
a door body;
the driving device is in transmission connection with the door body to drive the door body to move so as to close or open the operation opening, and the driving device comprises:
the first transmission shaft is used for outputting power;
the transmission component is fixedly connected with the first transmission shaft;
one end of the transmission belt is connected with the door body, and the other end of the transmission belt is wound on the transmission part;
it is characterized by also comprising:
the first bracket is fixedly arranged on the cabinet body;
a torque limiting element mounted on the first bracket;
and the second transmission shaft is arranged at one end of the driving device opposite to the first transmission shaft, is fixedly connected with the driving device, is connected with the torque limiting element, and can rotate relative to the torque limiting element when the torque on the second transmission shaft is greater than the preset value of the torque limiting element.
2. The biosafety cabinet according to claim 1, wherein a mounting cavity is formed inside the transmission member, a driving element is arranged in the mounting cavity, the driving element is connected with the first transmission shaft, a transmission wheel is arranged on the first transmission shaft, and the transmission wheel is fixedly connected with the transmission member.
3. The biosafety cabinet according to any of claims 1-2, further comprising:
a second bracket;
and the tail plug is connected with one end of the transmission part provided with the first transmission shaft and is rotationally connected with the second support.
4. A biosafety cabinet according to claim 3, wherein the second drive shaft is inserted within the torque limiting element.
5. The biosafety cabinet according to claim 1, wherein sliding rails facilitating the door body to slide up and down are arranged on the cabinet body on two sides of the operation opening.
6. The biosafety cabinet according to claim 1, wherein at least 2 transmission belts are arranged and wound in sequence along the length direction of the transmission component.
7. The biosafety cabinet of claim 3, wherein the torque limiting element is a friction torque limiter.
8. The biosafety cabinet according to claim 1, further comprising a limit detection element disposed at a bottom position of the operation opening.
9. The biosafety cabinet according to claim 5, wherein the sliding track is provided with 2 magnetic switches for controlling the opening height of the door body, and the magnetic switches are sequentially arranged along the length direction of the sliding track.
10. The biosafety cabinet according to claim 1, wherein the door body is a glass door, and an elastic rubber member is wrapped at the bottom of the glass door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120002328.2U CN215234259U (en) | 2021-01-04 | 2021-01-04 | Biological safety cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120002328.2U CN215234259U (en) | 2021-01-04 | 2021-01-04 | Biological safety cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215234259U true CN215234259U (en) | 2021-12-21 |
Family
ID=79489334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120002328.2U Active CN215234259U (en) | 2021-01-04 | 2021-01-04 | Biological safety cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215234259U (en) |
-
2021
- 2021-01-04 CN CN202120002328.2U patent/CN215234259U/en active Active
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