CN218689563U - Biological safety cabinet - Google Patents

Abstract

The application relates to the technical field of medical instruments and discloses a biological safety cabinet which comprises a box body, a partition plate, a high-efficiency filter, a fan box and a locking assembly, wherein the box body is provided with an accommodating space; the partition plate is arranged in the box body to divide the accommodating space into a filtering space and an operating space, and the partition plate is provided with a ventilation opening; the high-efficiency filter is arranged in the filtering space and covers the ventilation opening; the first end of the fan box is hinged to the inner wall of the filtering space, the fan box can rotate between a first angle and a second angle, and the high-efficiency filter is pressed when the fan box rotates to the first angle; and the locking assembly is used for locking the second end of the fan box, and the locking assembly locks the fan box when the fan box rotates to a first angle.

Description

Biological safety cabinet

Technical Field

The application relates to the technical field of medical equipment, for example to a biological safety cabinet.

Background

The biological safety cabinet is widely applied to the fields of medical health, disease prevention and the like, and can reduce the exposure risk of operators in operating infectious experimental materials such as primary cultures, bacterial strains, diagnostic specimens and the like. The high-efficiency filter is a core component of the biological safety cabinet, and needs to be tightly assembled to ensure the filtering efficiency of the high-efficiency filter. The high-efficiency filter as a consumable needs to be replaced regularly, and the form of compression assembly also causes the replacement to be inconvenient.

The installation mechanism comprises a biological safety cabinet, a working area is arranged in the biological safety cabinet, the high-efficiency filter is arranged above the working area, a static pressure box is arranged above the high-efficiency filter, a connecting device is arranged above the static pressure box, a fixing device is arranged on the inner side wall of the biological safety cabinet, and a lifting device is arranged between the connecting device and the fixing device. The connecting device adopts two lifting lugs arranged at two ends of the static pressure box, the fixing device adopts two supporting frames arranged on the inner wall of the biological safety cabinet, and the lifting device adopts a screw rod. The lug below is equipped with the nut that forms a complete set with the screw rod, and the screw rod base joint is in the support frame top, and the screw rod passes support frame and lug and is connected with the nut.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the screw rod and the nut are located the filtration space, and the interference takes place for a plurality of nuts of rotation and screw rod and boxboard easily in narrow space, and high efficiency filter's change is comparatively inconvenient.

It is noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the application and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The disclosed embodiment provides a biological safety cabinet to solve the problem of how to make the high efficiency filter easily replaced.

In some embodiments, the biosafety cabinet comprises a box body, a partition plate, a high-efficiency filter, a fan box and a locking assembly, wherein the box body is configured with an accommodating space; the partition plate is arranged in the box body to divide the accommodating space into a filtering space and an operating space, and the partition plate is provided with a ventilation opening; the high-efficiency filter is arranged in the filtering space and covers the ventilation opening; the first end of the fan box is hinged to the inner wall of the filtering space, the fan box can rotate between a first angle and a second angle, and the high-efficiency filter is pressed when the fan box rotates to the first angle; and the locking assembly is used for locking the second end of the fan box, and the locking assembly locks the fan box when the fan box rotates to a first angle.

In some embodiments, the locking assembly comprises a lock nose and a lock hook, wherein the lock nose is fixed on the box body; and the lock hook is connected to the second end of the fan box and matched with the lock nose to lock the fan box.

In some embodiments, the locking assembly further comprises a base, a handle, and a rotating shaft, wherein the base is fixed to the second end of the fan box; the first end of the handle is rotatably connected to the base; the rotating shaft is arranged between the first end and the second end of the handle, when the handle rotates towards the first direction, the distance between the rotating shaft and the lock nose is increased, and when the handle rotates towards the second direction, the distance between the rotating shaft and the lock nose is decreased; wherein, the latch hook includes latch hook pole and latch hook head, latch hook pole connect in the axis of rotation.

In some embodiments, the rotating shaft is provided with a bolt hole, the bolt hole is internally provided with an internal thread, the locking hook rod is provided with an external thread, and the locking hook rod is screwed into the bolt hole.

In some embodiments, the second end of the handle is bent outwardly to form a hand grip.

In some embodiments, the biosafety cabinet further comprises a hinge shaft and a connector, wherein the hinge shaft is fixed to the first end of the fan box; the connecting piece is fixed on the inner wall of the filtering space, a rotating hole is formed in the connecting piece, and the hinge shaft is rotatably arranged in the rotating hole so that the fan box can be hinged to the inner wall of the filtering space.

In some embodiments, the number of the hinge shafts is multiple, the number of the connecting pieces is multiple, and the plurality of hinge shafts and the plurality of connecting pieces are in one-to-one correspondence so that the fan box is hinged to the inner wall of the filtering space.

In some embodiments, the connecting member is provided with a communicating groove along a radial direction of the rotation hole, and the hinge shaft enters the rotation hole through the communicating groove.

In some embodiments, the biosafety cabinet further comprises a fastener for securing the fan box at a second angle.

In some embodiments, the biosafety cabinet further comprises a shock absorbing rubber ring padded between the fan box and the high efficiency filter.

The biological safety cabinet provided by the embodiment of the disclosure can realize the following technical effects:

1. the fan box compresses the biological safety cabinet, and the compression assembly of the high-efficiency filter can be realized without arranging an additional static pressure device, so that the structure of the biological safety cabinet is simplified;

2. the fan box is connected to the inner wall of the box body in a hinged mode, and the fan box can be lifted only by small force, so that the replacement of the high-efficiency filter is completed, and the use by a user is facilitated;

3. the fan sets up in the fan box, can completely cut off some fan running noise to reduce the running noise of biological safety cabinet.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic structural diagram of a biosafety cabinet according to an embodiment of the disclosure;

FIG. 2 is a schematic cross-sectional view of a biosafety cabinet according to an embodiment of the disclosure;

FIG. 3 is a schematic view of a biological safety cabinet according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a biosafety cabinet with a fan box removed according to an embodiment of the disclosure;

FIG. 5 is a schematic cross-sectional view of a biosafety cabinet with a fan case removed according to an embodiment of the disclosure;

fig. 6 is a schematic structural diagram of a fan box of a biosafety cabinet according to an embodiment of the disclosure.

Reference numerals:

100: a box body; 200: a partition plate; 210: filtering the space; 220: an operating space; 300: a high efficiency filter; 400: a fan box; 500: a locking assembly; 510: locking the nose; 520: a latch hook; 530: a base; 540: a handle; 550: a rotating shaft; 610: a hinge axis; 620: a connecting member.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

The biosafety cabinet takes aerosols formed by contaminating test materials with circulating air to protect operators from exposure risks. The biological safety cabinet is provided with a fan and a high-efficiency filter. The high-efficiency filter is a core component of a biological safety cabinet and is mainly used for trapping particle dust with the particle size of more than 0.5 mu m and various suspended matters. The high-efficiency filter is made up by using superfine glass fibre paper as filtering material, folding the above-mentioned materials into separate plates, sealing them with new polyurethane sealant and using galvanized plate, stainless steel plate and aluminium alloy section as external frame. The fan is used for driving air to flow through the high-efficiency filter. This also results in a high air resistance of the high efficiency filter due to its extremely high air filtration efficiency. Therefore, the high efficiency filter requires a compression fit to ensure that all of the air flows through the high efficiency filter to be effectively purified. The high efficiency filter needs to be replaced regularly as a consumable, and the form of pressing the assembly leads to the fact that it is comparatively difficult to replace the high efficiency filter.

In order to make the high efficiency filter 300 of the biosafety cabinet easy to replace, as shown in fig. 1 to 6, the disclosed embodiment provides a biosafety cabinet, which comprises a box body 100, a partition plate 200, a high efficiency filter 300, a fan box 400 and a locking assembly 500, wherein the box body 100 is configured with an accommodating space; a partition 200 disposed in the cabinet 100 to divide the accommodating space into a filtering space 210 and an operating space 220, the partition 200 having a vent; a high efficiency filter 300 disposed in the filtering space 210 and covering the ventilation opening; a first end of the fan box 400 is hinged to the inner wall of the filtering space 210, the fan box 400 can rotate between a first angle and a second angle, and the high efficiency filter 300 is pressed when the fan box 400 rotates to the first angle; and the locking assembly 500 is used for locking the second end of the fan box 400, and the locking assembly 500 locks the fan box 400 when the fan box 400 rotates to a first angle.

In the disclosed embodiment, the case 100 of the biosafety cabinet includes a top plate, a bottom plate, and side plates, which enclose a storage space. The side plates comprise a back plate, a left side plate, a right side plate and a front panel. The barrier 200 is provided in the cabinet 100 to divide the storage space into a filtering space 210 and an operating space 220. An operation window is opened on one side of the operation space 220 facing the user, the operation window is communicated with the operation space 220, and the user extends a hand into the operation window to perform an experiment in the operation space 220. The air in the operating space 220 comes into contact with the test specimen, with potential danger. A fan is provided in the fan box 400 for driving air to flow from the operation space 220 to the filtering space 210. The air of the operating space 220 is entirely flowed to the filtering space 210 by the driving of the blower. The air introduced into the filtering space 210 passes through the high efficiency filter 300, and the aerosol molecules contained therein are captured by the high efficiency filter 300, thereby completing the filtering of the air.

An air flow passage is defined inside the fan box 400, and the fan is disposed inside the fan box 400 to drive air to flow according to a preset path. The fan box 400 compresses the high efficiency filter 300 at a preset installation position without arranging an additional static pressure box, thereby simplifying the structure of the biological safety cabinet. The first end of the fan case 400 is hinged to the inner wall of the filtering space 210, and the fan case 400 is rotated between the first angle and the second angle by applying force to the second end of the fan case 400. The fan box 400 is attached to the high efficiency filter 300 at a first angle so as to press the high efficiency filter 300 to a preset installation position; the fan box 400 is spaced from the high efficiency filter 300 at a second angle, that is, the compressed state of the high efficiency filter 300 is released, so that the high efficiency filter 300 is detached or mounted. When the biosafety cabinet is working normally, the fan box 400 is at a first angle that compresses the high efficiency filter 300. The locking assembly 500 may lock the fan box 400 at a first angle such that the fan box 400 remains compressed against the high efficiency filter 300. When the high efficiency filter 300 needs to be replaced, the locking of the locking assembly 500 is released, and the fan box 400 is lifted to release the compression of the high efficiency filter 300 by the fan box 400.

By using the biological safety cabinet provided by the embodiment of the disclosure, the fan box 400 compresses the biological safety cabinet, and the compression assembly of the high-efficiency filter 300 can be realized without arranging an additional static pressure device, so that the structure of the biological safety cabinet is simplified; the fan box 400 is connected to the inner wall of the box body 100 in a hinged manner, and the fan box 400 can be lifted by a small force, so that the high-efficiency filter 300 is replaced, and the use by a user is facilitated; the fan sets up in fan case 400, can completely cut off some fan running noise to reduce the running noise of biological safety cabinet.

Optionally, the locking assembly 500 comprises a locking nose 510 and a locking hook 520, wherein the locking nose 510 is fixed to the box 100; and the locking hook 520 is connected to the second end of the fan box 400, and the locking hook 520 is matched with the locking nose 510 to lock the fan box 400.

The locking noses 510 are configured with a snap-in portion, the snap-in portion of the locking noses 510 extending outwardly and downwardly from the mounting location. The latch hook 520 includes a latch head, and the latch hook 520 is rotatably connected to the second end of the fan case 400. When the fan box 400 is locked, the fan box is rotated to a first angle, and then the lock hook 520 is rotated in a first direction to hook the head of the lock hook into the clamping part of the lock nose 510. The locking nose 510 restricts movement of the locking hook 520 in a direction of opening the fan case 400, thereby achieving a locking function. When the lock of the fan case 400 is released, the lock hook 520 is rotated in the second direction, the lock hook 520 is disengaged from the engagement portion of the lock nose 510, and the lock nose 510 does not restrict the operation of the lock hook 520. The second direction is a direction opposite to the first direction. The fan box 400 can be firmly fixed at the first angle by the locking nose 510 and the locking hook 520, so that the fan box 400 compresses the high efficiency filter 300. The locking assembly 500 is in the form of a locking nose 510 and a locking hook 520, and has the advantages of simple structure, low cost, reliable work and convenient use.

Optionally, the locking assembly 500 further comprises a base 530, a handle 540 and a rotating shaft 550, wherein the base 530 is fixed to the second end of the fan box 400; a handle 540, a first end of which is rotatably connected to the base 530; a rotation shaft 550 disposed between the first end and the second end of the handle 540, wherein when the handle 540 is rotated in the first direction, a distance between the rotation shaft 550 and the lock nose 510 is increased, and when the handle 540 is rotated in the second direction, a distance between the rotation shaft 550 and the lock nose 510 is decreased; wherein the latch hook 520 includes a latch hook rod connected to the rotation shaft 550 and a latch hook head.

The latch hook 520 is provided at a second end, i.e., a front side, of the fan case 400. The base 530 is fixed to the front side of the fan case 400, and the handle 540 is rotatably coupled to the base 530. The axis about which the handle 540 rotates is parallel to the axis of rotation of the fan box 400 when it is tilted. A rotation shaft 550 is disposed between the first end and the second end of the handle 540, and an axis of the rotation shaft 550 is parallel to an axis around which the handle 540 rotates. When the handle 540 is rotated, the rotation shaft 550 makes an arc motion. The locking nose 510 is fixed to the case 100, and the distance from the locking nose 510 changes when the rotation shaft 550 performs the arc motion. The latch hook 520 includes a latch hook rod for engaging with the catching portion of the latch nose 510 and a latch hook head for connecting the latch hook 520 to the fan case 400. The hook lever is connected to the rotation shaft 550 so that the hook 520 can be rotated. When the handle 540 is rotated, the rotating shaft 550 can perform an arc motion so as to change the distance between the latch hook 520 and the latch nose 510.

Taking the example where the locking nose 510 is located below the base 530, the fan box 400 is rotated to a first angle when the fan box 400 is locked. When the handle 540 is rotated downward, the rotation shaft 550 follows the handle 540 to make an arc motion, and the distance between the rotation shaft 550 and the lock nose 510 is reduced. The hook 520 is rotated to move the hook head below the nose 510. Press latch hook 520 and upwards rotate handle 540, axis of rotation 550 is circular motion along with handle 540, and the distance increase between axis of rotation 550 and lock nose 510 drives latch hook head rebound, until the lower surface of latch hook head chucking joint portion. The handle 540 is further rotated, the rotation shaft 550 serves as a fulcrum, and the handle 540 makes a lever motion. The second end of the handle 540 rotates upward, driving the first end of the handle 540 to rotate downward, thereby pressing the fan box 400 against the high efficiency filter 300. The high efficiency filter 300 is compressed by the lever movement described above. The handle 540 continues to be rotated until the axis of the handle 540 is parallel to the axis of the shackle 520. At this time, the downward force of the latch hook 520 on the handle 540 cannot be resolved into a force to drive the handle 540 to rotate, and the locking assembly 500 is in a stable state. As the handle 540 continues to be rotated, the latch hook 520 acts on the handle 540 downward to split the force that drives the handle 540 to rotate toward the fan case 400, the fan case 400 restricts the handle 540 from moving, and the latch assembly 500 is in a relatively more stable state. The clamping part of the locking nose 510 limits the upward movement of the head of the locking hook, namely, the upward movement of the fan box 400 connected to the locking hook 520, and thus the locking of the fan box 400 is realized. The clamping portion simultaneously limits the outward movement of the head of the latch hook, preventing the latch hook 520 from being disengaged from the latch nose 510.

When the locking of the fan box 400 is released, the handle 540 is rotated downward, the rotating shaft 550 moves in an arc along with the handle 540, the distance between the rotating shaft 550 and the lock nose 510 is reduced, and the lock hook 520 moves downward. The hook 520 is rotated outwardly to disengage the hook head from the release of the nose 510. At this time, the movement of the fan box 400 is no longer limited by the lock nose 510, and the unlocking of the fan box 400 is realized.

With such an arrangement, the operating handle 540 serves as a labor-saving lever, and the fan box 400 can be pressed against the high efficiency filter 300 with a small force and the fan box 400 can be locked. The locking assembly 500 performs the locking function and simultaneously performs the auxiliary pressing function.

Alternatively, the rotation shaft 550 is provided with a bolt hole, an internal thread is configured inside the bolt hole, and the latch hook lever is configured with an external thread, and the latch hook lever is screwed into the bolt hole.

The distance between the head of the latch hook and the rotation shaft 550 can be adjusted by rotating the latch hook 520 around the axis of the latch hook lever. When the fan box 400 is locked, the distance between the second end of the fan box 400 and the predetermined mounting position of the locking nose 510 is determined by the distance between the head of the locking hook and the rotating shaft 550. The longer the distance between the head of the latch hook and the rotating shaft 550 is, the larger the distance between the second end of the chassis and the preset installation position of the latch nose 510 is, and the smaller the pressing force of the fan box 400 on the high efficiency filter 300 is; the smaller the distance between the second end of the chassis and the predetermined mounting position of the lock nose 510, the greater the pressing force of the fan box 400 against the high efficiency filter 300. By adopting the arrangement mode, the distance between the head of the locking hook and the rotating shaft 550 can be flexibly adjusted, and the distance between the second end of the fan box 400 and the preset installation position of the locking nose 510 is further adjusted, so that the pressing force applied to the high-efficiency filter 300 by the fan box 400 is adjusted. It should be noted that, when the distance between the head of the locking hook and the rotating shaft 550 is adjusted, the degree of rotation of the locking hook 520 is an integral multiple of 360 °, which does not affect the fit relationship between the head of the locking hook and the locking nose 510. When the shape of the head of the locking hook is Zhou Duichen, the number of pairs of rotation of the locking hook 520 is an integer multiple of 180 °, which also does not affect the fit between the head of the locking hook and the locking nose 510.

Optionally, a second end of the handle 540 is bent outward to form a hand grip.

The second end of the handle 540 is bent outward, which means that when the fan box 400 is in the locked state, the second end of the handle 540 is bent away from the fan box 400. The second end of the handle 540 is bent outward, and may be a distance from the fan box 400 when the fan box 400 is in the locked state, so as to facilitate the operator to rotate the handle 540. With this arrangement, replacement of the high efficiency filter 300 is further facilitated.

Optionally, the biosafety cabinet further comprises a hinge shaft 610 and a connector 620, wherein the hinge shaft 610 is fixed at a first end of the fan box 400; and a connector 620 fixed to an inner wall of the filtering space 210, the connector 620 being configured with a rotation hole, and a hinge shaft 610 rotatably provided at the rotation hole to hinge the fan box 400 to the inner wall of the filtering space 210.

The connector 620 is fixed to the inner wall of the filtering space 210, and the fan case 400 is rotatably connected to the connector 620 by a hinge shaft 610 to be hinged to the inner wall of the filtering space 210. Be provided with connecting piece 620, made things convenient for fan box 400's dismouting.

Alternatively, the number of the hinge shafts 610 is plural, the number of the connectors 620 is plural, and the plural hinge shafts 610 correspond to the plural connectors 620 one by one so that the fan box 400 is hinged to the inner wall of the filtering space 210.

The fan box 400 is hinged to the inner wall of the filtering space 210 by the plurality of hinge shafts 610, and the plurality of hinge shafts 610 and the plurality of connectors 620 can uniformly provide a locking force to the fan box 400 when the fan box 400 is in a locked state, thereby improving a sealing effect between the fan box 400 and the high efficiency filter 300. By adopting the form of a plurality of hinge shafts 610 and a plurality of connecting pieces 620, the labor is saved when the fan box 400 is rotated, and the fan box 400 is not easy to twist and dislocate.

Alternatively, the connection member 620 is opened with a communication groove in a radial direction of the rotation hole, and the hinge shaft 610 enters the rotation hole through the communication groove.

When the fan box 400 is assembled, the hinge shaft 610 enters the transmission hole through the communicating groove. Similarly, when it is necessary to remove the fan case 400, the locking of the fan case 400 by the locking assembly 500 is finished, and then the fan case 400 is translated so that the rotation shaft 550 connected to the fan case 400 is released from the rotation hole through the communication groove. With such an arrangement, the fan box 400 can be easily attached and detached.

Optionally, the partition 200 includes a diaphragm 200, the diaphragm 200 is opened with a vent, and the high efficiency filter 300 covers the vent.

The fan box 400 is located above the filter and the weight of the fan box 400 itself also acts as part of the pressure when the biosafety cabinet is compressed. With this arrangement, fan box 400 can better compress high efficiency filter 300.

Optionally, the biosafety cabinet further comprises a fastener for securing the fan box 400 at the second angle.

During replacement of HEF 300, fan box 400 needs to be maintained at the second angle. The fan box 400 can be fixed at a second angle by the fixing piece, so that the hands of an operator are released, and the replacement of the high-efficiency filter 300 can be completed by one person. With such an arrangement, it is more convenient to replace the high efficiency filter 300.

Optionally, the fixing member includes a support rod, a bottom end of the support rod is rotatably connected to the partition board 200, and a support groove is formed at the bottom of the fan box 400. When the fan box 400 rotates to the second angle, the supporting rod is rotated to support the top end of the supporting rod against the supporting groove.

When fan box 400 is at a first angle, the bracing piece is laminated to baffle 200. When the fan box 400 is at the second angle, the support rod is rotated upwards, and the fan box 400 is supported by the support rod. In this way, the fixing member is simply and reliably fixed to the fan box 400, and is easy to operate.

Optionally, the biosafety cabinet further comprises a shock absorbing rubber ring padded between the fan box 400 and the high efficiency filter 300.

The blower is fixed to the blower case 400, and the blower is easily vibrated by the blower when rotating. The damping rubber ring is lined between the high efficiency filter 300 and the fan box 400, and can absorb the vibration of the fan box 400 and prevent the vibration of the fan box 400 from being transmitted to the high efficiency filter 300 and the partition board 200. The damping rubber ring can also enable the fan box 400 to be more attached to the high-efficiency filter 300, so that the high-efficiency filter 300 can filter air more sufficiently.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A biosafety cabinet, comprising:

a case constructed with an accommodating space;

the partition plate is arranged in the box body to divide the accommodating space into a filtering space and an operating space, and the partition plate is provided with a ventilation opening;

the high-efficiency filter is arranged in the filtering space and covers the ventilation opening;

the first end of the fan box is hinged to the inner wall of the filtering space, the fan box can rotate between a first angle and a second angle, and the high-efficiency filter is pressed when the fan box rotates to the first angle;

and the locking assembly is used for locking the second end of the fan box, and the locking assembly locks the fan box when the fan box rotates to a first angle.

2. The biosafety cabinet of claim 1, wherein the locking assembly comprises:

the lock nose is fixed on the box body;

and the lock hook is connected to the second end of the fan box and matched with the lock nose to lock the fan box.

3. The biosafety cabinet of claim 2, wherein the locking assembly further comprises:

the base is fixed at the second end of the fan box;

the first end of the handle is rotatably connected to the base;

the rotating shaft is arranged between the first end and the second end of the handle, when the handle rotates towards the first direction, the distance between the rotating shaft and the lock nose is increased, and when the handle rotates towards the second direction, the distance between the rotating shaft and the lock nose is decreased;

wherein, the latch hook includes latch hook pole and latch hook head, latch hook pole connect in the axis of rotation.

4. The biosafety cabinet according to claim 3,

the rotating shaft is provided with a bolt hole, an internal thread is formed inside the bolt hole, the locking hook rod is provided with an external thread, and the locking hook rod is screwed into the bolt hole.

5. The biosafety cabinet according to claim 3,

the second end of the handle is bent outward to form a hand-held portion.

6. The biosafety cabinet of claim 1, further comprising:

the hinge shaft is fixed at the first end of the fan box;

the connecting piece is fixed on the inner wall of the filtering space, a rotating hole is formed in the connecting piece, and the hinge shaft is rotatably arranged in the rotating hole so that the fan box can be hinged to the inner wall of the filtering space.

7. The biosafety cabinet according to claim 6,

the fan box comprises a filtering space, a fan box body, a plurality of hinge shafts, a plurality of connecting pieces and a plurality of connecting pieces, wherein the number of the hinge shafts is multiple, the number of the connecting pieces is multiple, and the plurality of hinge shafts and the plurality of connecting pieces are in one-to-one correspondence so that the fan box body is hinged to the inner wall of the filtering space.

8. The biosafety cabinet according to claim 6,

the connecting piece is provided with a communicating groove along the radial direction of the rotating hole, and the hinge shaft enters the rotating hole through the communicating groove.

9. The biosafety cabinet of any of claims 1-8, further comprising:

and the fixing piece is used for fixing the fan box at a second angle.

10. The biosafety cabinet of claim 9, further comprising:

and the damping rubber ring is padded between the fan box and the high-efficiency filter.

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