CN214020851U

CN214020851U - Biological safety cabinet

Info

Publication number: CN214020851U
Application number: CN202022496824.6U
Authority: CN
Inventors: 万欢; 陈洲; 罗海峰; 奚建红; 奚明月
Original assignee: Cnpair Biotech Co ltd
Current assignee: Cnpair Biotech Co ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-08-24
Anticipated expiration: 2030-11-02

Abstract

The utility model discloses a biosafety cabinet, the on-line screen storage device comprises a base and a cabinet body, be equipped with visual window and cabinet door on the cabinet body, be equipped with two symmetric distribution's handle hole on the visual window, still be equipped with the air inlet subassembly and the subassembly of airing exhaust on the cabinet body, the air inlet subassembly includes air-supply line, filter frame and apron, filter frame installs in the air-supply line, filter frame is last to distribute along its circumferencial direction has a plurality of filter tanks, be equipped with filtering piece in the filter tank, the rotatable filter frame top of locating of apron, be equipped with a breach corresponding with the filter tank on the apron, be equipped with first air velocity transducer in the air-supply line, be equipped with the siren on the cabinet body, first air velocity transducer and siren are connected with the controller electricity respectively. The utility model provides a biosafety cabinet, it has a plurality of filtration pieces that can be used to filtered air, and a plurality of filtration pieces can use in proper order according to actual demand for the increase of service life.

Description

Biological safety cabinet

Technical Field

The utility model relates to a biological safety cabinet technical field, concretely relates to biological safety cabinet.

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 totally-enclosed biosafety cabinet of current is when using, in inhaling the biosafety cabinet with the impurity in the outside air easily, for this reason, partial biosafety cabinet has set up filtration in air intake department, and the impurity in the air can be got rid of to the filter pulp, but along with the increase of live time, the wind speed size that can influence the air intake is constantly accumulated to the last impurity of filtration to influence the accuracy of experimental result.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The technical problem to the sustainable filterable time of filtration limited in current biological safety cabinet, the utility model provides a biological safety cabinet, it has a plurality of filtration pieces that can be used to filtered air, and a plurality of filtration pieces can use in proper order according to actual demand for the increase of service life.

2. Technical scheme

In order to solve the above problem, the utility model provides a technical scheme does:

the utility model provides a biosafety cabinet, includes the base and the cabinet body, be equipped with visual window and cabinet door on the cabinet body, be equipped with two symmetric distribution's handle hole on the visual window, still be equipped with the air inlet subassembly on the cabinet body and the subassembly of airing exhaust, the air inlet subassembly includes the air-supply line, crosses filter stand and apron, it installs in the air-supply line to cross the filter stand, it has a plurality of filter tanks to cross the distribution of its circumferencial direction on the filter stand, be equipped with the filter piece in the filter tank, the rotatable filter stand top of locating of apron, be equipped with a breach corresponding with the filter tank on the apron, be equipped with first air velocity transducer in the air-supply line, be equipped with the siren on the cabinet body, first air velocity transducer and siren are connected with the controller electricity respectively.

Optionally, the bottom of filter vat is equipped with the supporter, be equipped with on the supporter with the communicating through-hole of filter vat, filter and place on the supporter.

Optionally, the air inlet pipe is detachably fixed on the cabinet body.

Optionally, the top edge of air-supply line is equipped with the chimb, the chimb passes through the sealing washer butt cooperation with cabinet body top, the cooperation of splining between air-supply line and the cabinet body.

Optionally, a plurality of limiting holes are distributed on the convex edge at equal intervals along the circumferential direction of the convex edge, and a plurality of limiting columns matched with the limiting holes are arranged on the cabinet body.

Optionally, the air inlet pipe comprises a flared section and a reduced section, the filter frame is located at the flared section, and the first air speed sensor is located at the reduced section.

Optionally, the filter frame is made of metal capable of being attracted by the magnet, the cover plate is provided with two magnetic attraction strips, and the two magnetic attraction strips are located on two sides of the notch respectively.

Optionally, a handle is arranged on the cover plate, and anti-skid grains are arranged on the handle.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) this biological safety cabinet has a plurality of filtration pieces that can be used to filtered air, and a plurality of filtration pieces can use according to actual demand in proper order for but this biological safety cabinet continuous operation's time prolongs greatly.

(2) The filtering piece adsorbed with impurities in the biosafety cabinet can prevent the pollution to the surrounding environment under the shielding effect of the cover plate, so that the operation environment is safer.

Drawings

Fig. 1 is a schematic structural diagram of a biosafety cabinet according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a cover plate in a biosafety cabinet according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an air inlet pipe in a biosafety cabinet according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of an air intake assembly in a biosafety cabinet according to an embodiment of the present invention;

1. a base; 2. a cabinet body; 3. a visual window; 4. a cabinet door; 5. an operation hole; 6. an air intake assembly; 61. an air inlet pipe; 611. a convex edge; 6111. a limiting hole; 612. a flared section; 613. a necking section; 62. a filter frame; 621. a filter tank; 6211. a rack; 62111. a through hole; 63. a cover plate; 631. a notch; 632. magnetically attracting the strip; 633. a handle; 64. a filter member; 7. an air exhaust assembly; 8. an alarm; 9. a limiting column.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings 1-4 and the accompanying examples.

With reference to fig. 1-4, the biosafety cabinet of the embodiment includes a base 1 and a cabinet body 2, the cabinet body 2 is fixed above the base 1 by a welding machine, the cabinet body 2 is provided with a visual window 3 and a cabinet door 4, the visual window 3 is installed on an inclined plane formed on the front surface of the cabinet body 1, the cabinet door 4 is rotatably installed on one side of the cabinet body 2 by hinges, the cabinet door 4 is in sealing fit with the cabinet body 2, the visual window 3 is provided with two symmetrically distributed operation holes 5, gloves for internal operation are installed at the operation holes 5, the cabinet body 2 is further provided with an air intake assembly 6 and an air exhaust assembly 7, the air intake assembly 6 and the air exhaust assembly 7 are installed on the top end surface of the cabinet body 2 in bilateral symmetry, the air exhaust assembly 7 is an existing high-efficiency air filtering exhaust device, and the high-efficiency air filtering exhaust device is widely applied to the field of biosafety cabinets, therefore, not described in detail herein, the air intake assembly 6 includes an air intake duct 61, a filter frame 62 and a cover plate 63, the filter frame 62 is installed in the air inlet pipe 61, the filter frame 62 and the air inlet pipe 61 are integrally formed, a plurality of filter slots 621 are distributed on the filter frame 62 along the circumferential direction thereof, the number of the filter slots 621 in this embodiment is 4, the filtering tank 621 is provided with a filtering element 64, and the filtering element 64 may be made of filtering cotton, which is not described herein, the cover plate 63 is rotatably arranged above the filter frame 62, the lower end surface of the cover plate 63 is jointed with the upper end surface of the filter frame 62, the cover plate 63 is provided with a notch 631 corresponding to the filter tank 621, the shape and size of the notch 631 are the same as those of the filter tank 621, a first air speed sensor is arranged in the air inlet pipe 61, an alarm 8 is arranged on the cabinet body 2, and the first air speed sensor and the alarm 8 are respectively electrically connected with the controller.

When the biosafety cabinet works, air in the cabinet body 2 is pumped out through the exhaust assembly 7, the cabinet body 2 is in a negative pressure state, outside air enters the cabinet body 2 through the air inlet pipe 61, when air flow passes through the filtering piece 64, impurities in the air are filtered by the filtering piece 64, the air entering the cabinet body 2 is ensured to be pure, when the air flows through the first air speed sensor, the first air speed sensor uploads a measured air speed value to the controller, along with the continuous accumulation of the impurities on the filtering piece 64, the flow speed of the air flowing through the filtering piece 64 is reduced, when a real-time air speed value measured by the first air speed sensor is compared with an initial air speed value, the difference value exceeds a preset value, the air speed is too slow, the impurities on the filtering piece 64 are more, the alarm 8 is started to give an alarm, and after an operator hears the alarm, the notch 631 in the cover plate 63 can be rotated by a preset angle to correspond to the adjacent filter groove 621 by rotating the cover plate 63, the adjacent filter elements 64 are used for filtering the air flowing through the air inlet pipe 61, and the filter elements 64 used for filtering are shielded by the cover plate 63, so that impurities adsorbed on the filter elements 64 are prevented from floating in the air due to air flow to influence the surrounding operating environment; the biological safety cabinet is provided with a plurality of filtering pieces 64 for filtering air, and the filtering pieces 64 can be used in sequence according to actual requirements, so that the continuous operation time of the biological safety cabinet is greatly prolonged; the filtering member 64 adsorbed with impurities can prevent the pollution to the surrounding environment under the shielding effect of the cover plate 63, so that the operation environment is safer.

In this embodiment, in order to facilitate the operator to rotate the cover plate 63, a handle 633 is integrally formed on the cover plate 63, and the handle 633 is provided with anti-slip lines.

As an alternative of the present invention, a shelf 6211 is integrally formed at the bottom of the filtering tank 621, a through hole 62111 communicated with the filtering tank 621 is provided on the shelf 6211, and the filtering member 64 is placed on the shelf 6211; filter piece 64 and place and to realize filtering piece 64 fixed on supporter 6211, the air passes through behind the filtering piece 64 accessible through-hole 62111 and discharges, through supporter 6211's setting for filter piece 64 detachable installs on filtering frame 62, and the convenience when changing filtering piece 64 promotes greatly.

As an alternative of the present invention, the air inlet pipe 61 is detachably fixed on the cabinet body 2; through the structure design, the air inlet pipe 61 can be taken down from the cabinet body 2 and then the filter piece 64 is replaced when the filter piece 64 is replaced, so that the advantage of replacing the filter piece 64 is that impurities falling from the filter piece 64 fall into the cabinet body 2 through the air inlet pipe 61, and the pollution of the impurities to the environment in the cabinet body 2 is reduced.

As an alternative of the present invention, a convex edge 611 is disposed at the top edge of the air inlet pipe 61, the convex edge 611 is in butt fit with the top of the cabinet 2 through a sealing ring, a through hole for installing the air inlet pipe 61 is disposed on the cabinet 2, after the air inlet pipe 61 passes through the through hole, the top of the air inlet pipe 61 is suspended on the cabinet 2 through the convex edge 611, and the air inlet pipe 61 is in rotation-stopping fit with the cabinet 2; due to the rotation stopping fit between the air inlet pipe 61 and the cabinet body 2, when the cover plate 63 is rotated, the air inlet pipe 61 is always fixed, so that an operator can operate the cover plate 63 with one hand.

As an alternative of the present invention, a plurality of limiting holes 6111 are equidistantly distributed on the convex edge 611 along the circumferential direction thereof, and a plurality of limiting posts 9 matched with the limiting holes 6111 are arranged on the cabinet body 2; when the air inlet pipe 61 is installed, the air inlet pipe 61 can be limited to rotate relative to the cabinet body 2 through the matching between the limiting hole 6111 and the limiting column 9.

As an alternative of the present invention, the air inlet pipe 61 includes a flared section 612 and a constricted section 613, the flared section 612 is located above the constricted section 613, the filter frame 62 is located at the flared section 612, and the first air velocity sensor is located at the constricted section 613; by mounting the filter frame 62 on the flared section 612, the gas flow rate in the flared section 612 is relatively slow, which can prevent the impurities on the filter element 64 from entering the cabinet 2 through the filter element 64 due to the relatively fast gas flow rate, and ensure the air filtering effect of the filter element 64; through installing first air velocity transducer in throat section 613, throat section 613 can play the effect that the pressure boost is accelerated to gas, and the gas of higher velocity of flow is convenient for first air velocity transducer and is monitored its wind speed value, and the wind speed difference is more obvious after the enlarging of throat section 613 simultaneously, and the change of wind speed value is in time detected to the first air velocity transducer of being convenient for, has improved the sensitivity when detecting.

As an alternative of the present invention, the material of the filter frame 62 is a metal capable of attracting the magnet, two magnetic attraction strips 632 are disposed on the cover plate 63, and the two magnetic attraction strips 632 are respectively located at two sides of the notch 631; when rotating apron 63 at every turn, the magnetism on the apron 63 is inhaled strip 632 and is all adsorbed with the filtration frame 62 of the filter tank 621 both sides that breach 631 corresponds, this moment magnetism inhale the adsorption affinity between strip 632 and the filtration frame 62 and increased certain resistance to the rotation of apron 63, thereby make the angle when operating personnel rotates apron 63 more accurate, be convenient for in time rotate breach 631 to next filter tank 621 department, can prevent to take place to rotate at the during operation apron 63 because of wind-force simultaneously, the stability after apron 63 is fixed has been guaranteed.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. A biosafety cabinet is characterized in that: the novel air-conditioning cabinet comprises a base and a cabinet body, be equipped with visual window and cabinet door on the cabinet body, be equipped with two symmetric distribution's handle hole on the visual window, still be equipped with the air inlet subassembly on the cabinet body and the subassembly of airing exhaust, the air inlet subassembly includes the air-supply line, crosses filter stand and apron, it installs in the air-supply line to cross the filter stand, it has a plurality of filter tanks to cross the distribution of its circumferencial direction on the filter stand, be equipped with filter piece in the filter tank, the rotatable filter stand top of locating of apron, be equipped with a breach corresponding with the filter tank on the apron, be equipped with a wind speed sensor in the air-supply line, be equipped with the siren on the cabinet body, a wind speed sensor and siren are connected with the controller electricity respectively.

2. A biosafety cabinet according to claim 1, wherein: the bottom of filter tank is equipped with the supporter, be equipped with on the supporter with the communicating through-hole of filter tank, filter and place on the supporter.

3. A biosafety cabinet according to claim 1, wherein: the air inlet pipe is detachably fixed on the cabinet body.

4. A biosafety cabinet according to claim 3, wherein: the top edge of air-supply line is equipped with the chimb, the chimb passes through the sealing washer butt cooperation with cabinet body top, the cooperation of splining between air-supply line and the cabinet body.

5. A biosafety cabinet according to claim 4, wherein: a plurality of limiting holes are distributed on the convex edge at equal intervals along the circumferential direction of the convex edge, and a plurality of limiting columns matched with the limiting holes are arranged on the cabinet body.

6. A biosafety cabinet according to claim 1, wherein: the air inlet pipe comprises an expanding section and a reducing section, the filter frame is located at the expanding section, and the first air speed sensor is located at the reducing section.

7. A biosafety cabinet according to claim 1, wherein: the material of filtering the frame is the metal that can adsorb with magnet looks, be equipped with two magnetism on the apron and inhale the strip, two magnetism are inhaled the strip and are located breach both sides respectively.

8. A biosafety cabinet according to claim 1, wherein: the cover plate is provided with a handle, and the handle is provided with anti-skid grains.