Air filtering biological safety cabinet

Abstract

The utility model provides an air filtration biosafety cabinet, including the cabinet body, fan, mounting frame and bracket, be equipped with mounting frame and fan on the cabinet body, be equipped with the cover body that is communicated with fan air inlet end on mounting frame, the bracket is rotatingly installed on the cabinet body, be equipped with the filter plate on the bracket, the bracket bottom is equipped with a plurality of through-holes, bracket both sides are equipped with abutting part, the abutting part is equipped with the filter plate on the bracket. Abutting rods are movably arranged on the two sides of the mounting frame, springs for driving the abutting rods to abut against the abutting parts are arranged on the mounting frame, unlocking mechanisms for driving the abutting rods to be far away from the abutting parts are arranged on the two sides of the mounting frame, and when the filter plate needs to be cleaned or replaced, the unlocking mechanisms are operated to drive the abutting rods to be far away from the abutting parts to release the fixing state of the bracket; the bracket can be rotationally moved out of the mounting frame, the filter plate can be directly taken out to be cleaned or replaced after the bracket is moved out, the whole process is easy and convenient to operate, tools are not needed, convenience is provided for operators, and the filter plate can be replaced at any time according to needs so as to maintain the filtering performance of the whole biosafety cabinet.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an air-filtered biosafety cabinet. Background Technology

[0002] A biosafety cabinet is a box-type air-purifying negative pressure safety device that prevents the aerosol release of hazardous or unknown biological particles during experimental procedures. It is widely used in research, teaching, clinical testing, and production in fields such as microbiology, biomedicine, genetic engineering, and biopharmaceuticals, and is the most basic safety protection equipment in the primary protection barrier of laboratory biosafety. The biosafety cabinet uses a pump to draw air out of the cabinet, maintaining a negative pressure state inside. During the suction process, the gas is filtered before being discharged. However, after prolonged use, the filter components easily accumulate a large amount of impurities, affecting the overall filtration effect of the biosafety cabinet. Incompletely filtered gas released into the air pollutes the environment and affects the health of laboratory personnel. However, existing biosafety cabinets have a fixed structure, making it difficult to remove the filter components for cleaning and replacement. Disassembly and replacement often require tools such as screwdrivers, making the process cumbersome and inconvenient. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing an air-filtered biosafety cabinet, thereby resolving the problems described above.

[0004] This utility model provides an air-filtered biosafety cabinet, comprising:

[0005] The cabinet has a fan and a mounting frame. A cover is connected to the mounting frame, and an exhaust pipe is connected to the cover. The air inlet of the fan is connected to the exhaust pipe, and the air outlet of the fan is connected to an exhaust pipe.

[0006] A bracket is rotatably mounted on the cabinet and located below the mounting frame. A filter plate is placed on the bracket. Several through holes are provided at the bottom of the bracket. Abutment parts are provided on both sides of the bracket.

[0007] Abutting rods are movably provided on both sides of the mounting frame. The abutting rods are used to abut against the lower end of the abutting part to fix the bracket. A spring is provided on the mounting frame. The spring pushes the abutting rods to drive the abutting rods to approach and abut against the abutting part.

[0008] The unlocking mechanism is provided on both sides of the mounting frame. The unlocking mechanism is used to drive the abutment rod to retract into the mounting frame and move away from the abutment part.

[0009] Preferably, the mounting frame is provided with a sliding groove, the abutting rod is movably mounted in the sliding groove, the abutting rod is provided with an abutting ring for the spring to abut, and the spring is located in the sliding groove and abuts against the abutting ring.

[0010] Preferably, the unlocking mechanism includes a sliding handle and a limiting groove. The sliding handle is connected to the abutment rod and drives the abutment rod to move. The limiting groove is connected to the sliding groove and is composed of a horizontal channel and a side channel. The side channel is used for the sliding handle to move in to keep the abutment rod retracted into the mounting frame.

[0011] Preferably, the abutting rod is provided with an abutting block for abutting the lower end of the abutting part, the bottom of the abutting block is a guide slope, and the abutting part can push against the guide slope to drive the abutting block into the mounting frame.

[0012] Preferably, the bracket is provided with bending plates on both sides, and the two bending plates are used to abut against the top of the filter plate.

[0013] Preferably, the mounting frame is provided with a limiting plate, and the rear end of the bracket is provided with a rear plate for the filter plate to abut against. The inner side of the limiting plate is provided with an abutting inclined surface and a vertical surface from bottom to top. The abutting inclined surface and the vertical surface are used to cooperate with the rotation process of the bracket to push the filter plate to abut against the rear plate. The bracket is provided with a notch for the limiting plate to pass through.

[0014] Preferably, the top of the mounting frame is provided with a square rubber ring for pressing the filter plate above it.

[0015] Preferably, the mounting frame is provided with a support block that supports the bracket from below.

[0016] Preferably, the bracket is provided with a handle.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] When the filter plate needs to be cleaned or replaced, operate the unlocking mechanism to drive the abutment rod away from the abutment part to release the fixing state of the bracket. The bracket can then be rotated and moved out of the mounting frame. After the bracket is removed, the filter plate can be directly taken out for cleaning or replacement. After replacement, rotate the bracket back to the mounting frame and operate the unlocking mechanism to fix the bracket again. The whole process is simple to operate and does not require tools, providing convenience for operators, simplifying the installation method of the filter plate, and facilitating the replacement of the filter plate as needed to maintain the filtration performance of the entire biosafety cabinet. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0021] Figure 2 This is a structural schematic diagram of the fan, cover and mounting frame in a certain embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the bracket when it rotates out of the mounting frame in one embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the bracket when it is rotated to fit against the mounting frame in one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the bottom structure of the bracket and mounting frame in one embodiment of the present invention;

[0025] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0026] Figure 7 This is a sectional view of the mounting frame and bracket in one embodiment of the present invention;

[0027] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0028] Figure 9 This is a schematic diagram of the structure of the bracket and filter plate in a certain embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the bracket structure in one embodiment of the present invention.

[0030] In order to showcase the internal structure of the cabinet, Figure 1 A structural diagram showing the cabinet with the glass window hidden behind it.

[0031] In the diagram, 1-cabinet; 11-fan; 12-exhaust pipe; 2-mounting frame; 21-cover; 22-spring; 23-square rubber ring; 24-support block; 3-bracket; 31-filter plate; 32-through hole; 33-abutting part; 34-notch; 35-handle; 36-back plate; 4-abutting rod; 41-abutting ring; 5-unlocking mechanism; 51-sliding handle; 52-limiting groove; 521-horizontal groove; 522-side groove; 6-sliding groove; 61-annular baffle; 7-abutting block; 71-guide slope; 8-bending plate; 9-limiting plate; 91-abutting slope; 92-vertical surface. Detailed Implementation

[0032] This section will describe in detail the specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0033] Example 1:

[0034] Reference Figures 1 to 10 This utility model provides an air-filtered biosafety cabinet, comprising:

[0035] Cabinet 1, on which a fan 11 and a mounting frame 2 are installed, and a cover 21 is connected to the mounting frame 2. The air inlet of the fan 11 is connected to the cover 21, and the air outlet of the fan 11 is connected to an exhaust pipe 12.

[0036] The bracket 3 is rotatably mounted on the cabinet 1 and located below the mounting frame 2. A filter plate 31 is placed on the bracket 3. Several through holes 32 are provided at the bottom of the bracket 3. Abutment parts 33 are provided on both sides of the bracket 3.

[0037] Abutting rod 4 is movably provided on both sides of the mounting frame 2. The abutting rod 4 is used to abut the lower end of the abutting part 33 to fix the bracket 3. A spring 22 is provided on the mounting frame 2. The spring 22 pushes the abutting rod 4 to drive the abutting rod 4 to approach and abut the abutting part 33.

[0038] Unlocking mechanism 5: Both sides of the mounting frame 2 are provided with unlocking mechanism 5. The unlocking mechanism 5 is used to drive the abutment rod 4 to retract into the mounting frame 2 and move away from the abutment part 33.

[0039] When the filter plate 31 needs to be cleaned or replaced, the unlocking mechanism 5 is operated to drive the abutment rod 4 away from the abutment part 33 to release the fixed state of the bracket 3. The bracket 3 can then be rotated and moved out of the mounting frame 2. After the bracket 3 is removed, the filter plate 31 can be directly taken out for cleaning or replacement. After replacement, the bracket 3 is rotated back to the mounting frame 2 and the unlocking mechanism 5 is operated to re-fix the bracket 3. The whole process is simple to operate and does not require tools, which provides convenience for operators, simplifies the installation method of the filter plate 31, and facilitates the replacement of the filter plate 31 as needed to maintain the filtration performance of the entire biosafety cabinet.

[0040] Specifically, the mounting frame 2 is provided with a sliding groove 6, the abutment rod 4 is movably installed in the sliding groove 6, the abutment rod 4 is provided with an abutment ring 41 for the spring 22 to abut, the spring 22 is located in the sliding groove 6 and abuts against the abutment ring 41, and the sliding groove 6 is provided with an annular baffle for the abutment ring 41 to abut.

[0041] Spring 22 pushes against abutment ring 41 to drive abutment rod 4 to extend relative to mounting frame 2 and abut against the lower end of abutment part 33 on bracket 3, thereby fixing bracket 3. An annular baffle 61 abuts against abutment ring 41 to prevent abutment rod 4 from disengaging from slide groove 6.

[0042] Specifically, the unlocking mechanism 5 includes a sliding handle 51 and a limiting groove 52. The sliding handle 51 is connected to the abutment rod 4 and drives the abutment rod 4 to move. The limiting groove 52 is connected to the sliding groove 6. The limiting groove 52 is composed of a horizontal groove 521 and a side groove 522. The side groove 522 is used for the sliding handle 51 to move in to keep the abutment rod 4 retracted into the mounting frame 2.

[0043] When it is necessary to release the fixing of the bracket, first move the sliding handle 51 along the horizontal channel 521 to drive the abutment rod 4 into the sliding groove 6 of the mounting frame 2, release the fixing of the bracket 3, and rotate the sliding handle 51 into the side channel 522. Under the action of the spring 22, the sliding handle 51 automatically abuts against the side channel 522 and keeps the abutment rod 4 in the state of retracting into the mounting frame 2. After cleaning or replacing the filter plate 31, put the filter plate 31 back on the bracket 3, then rotate the bracket 3 to the mounting frame 2, and move the sliding handle 51 from the side channel 522 to the horizontal channel 521. Under the action of the spring 22, the sliding handle 51 moves along the horizontal channel 521, and the abutment rod 4 is pushed out of the sliding groove 6 and abuts against the lower end of the abutment part 33 on the bracket 3 to fix the bracket 3.

[0044] Specifically, the abutting rod 4 is provided with an abutting block 7 for abutting the lower end of the abutting part 33. The bottom of the abutting block 7 is a guide slope 71. The abutting part 33 can push against the guide slope 71 to drive the abutting block 7 to retract into the mounting frame 2.

[0045] Using the guide ramp 71 structure on the abutment block 7, after cleaning or replacing the filter plate 31 on the bracket 3, the locking mechanism can be released. Under the action of the spring 22, the abutment block 7 extends out of the slide groove 6, and then drives the filter plate 31 to turn towards the mounting frame 2. The abutment part 33 on the filter plate 31 pushes the guide ramp 71 on the abutment block 7 from below to drive the abutment block 7 to automatically retract into the slide groove 6. When the abutment part 33 moves above the abutment block 7, the abutment block 7 pops out again under the action of the spring 22 and abuts against the lower end of the abutment part 33, thereby achieving automatic locking of the bracket 3.

[0046] Example 2:

[0047] Reference Figures 1 to 10 In conjunction with the technical solution of Embodiment 1, in this embodiment, both sides of the bracket 3 are provided with bending plates 8, and the two bending plates 8 are used to abut against the top of the filter plate 31.

[0048] The two bending plates 8 limit the sides and top of the filter plate 31, and after the filter plate 31 is slidably inserted into the bracket 3, it can effectively prevent the filter plate 31 from accidentally shifting or shaking during the rotation of the bracket 3.

[0049] Specifically, the mounting frame 2 is provided with a limiting plate 9, and the rear end of the bracket 3 is provided with a rear plate 36 for the filter plate 31 to abut against. The inner side of the limiting plate 9 is provided with an abutting inclined surface 91 and a vertical surface 92 from bottom to top. The abutting inclined surface 91 and the vertical surface 92 are used to push the filter plate 31 to abut against the rear plate 36 in conjunction with the rotation process of the bracket 3. The bracket 3 is provided with a notch 34 for the limiting plate 9 to pass through.

[0050] After cleaning or replacing the filter plate 31 on the bracket 3, when the bracket 3 is turned to the mounting frame 2, the limiting plate 9 on the mounting frame 2 moves relative to the bracket 3. The abutting inclined surface 91 on the limiting plate 9 first abuts against the filter plate 31 and pushes the filter plate 31 towards the rear plate 36 of the bracket 3 as the bracket 3 rotates further. When the filter plate 31 moves to the vertical surface 92 of the limiting plate 9, both sides of the filter plate 31 abut against the vertical surface 92 and the rear plate 36 respectively, realizing the automatic positioning and installation of the filter plate 31.

[0051] Example 3:

[0052] Reference Figures 1 to 10 In combination with the technical solutions of Embodiment 1 and Embodiment 2, in this embodiment, a square rubber ring 23 for pressing the filter plate 31 is provided on the top of the mounting frame 2.

[0053] By setting a flexible square rubber ring 23, the square rubber ring 23 can press the filter plate 31 onto the bracket 3 and fill the gap between the top of the filter plate 31 and the top of the mounting frame 2, so that the gas can flow smoothly along the through hole 32, the middle of the filter plate 31, the cover 21, the fan 11 and the exhaust pipe 12, and prevent the gas from leaking out from the side of the filter plate 31.

[0054] Specifically, the mounting frame 2 is provided with a support block 24 that supports the bracket 3 from below.

[0055] By setting up a support block 24 to hold the bracket 3, it is convenient to temporarily support the bracket 3 when it rotates away from the mounting frame 2. The operator does not need to support the bracket 3 with one hand, which makes it convenient for the operator to disassemble, clean and replace the filter plate 31.

[0056] Specifically, the bracket 3 is equipped with a handle 35. The handle 35 allows for easy rotation of the bracket 3 to clean and replace the filter plate 31.

[0057] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. An air filtration biosafety cabinet, characterized in that, The utility model relates to an air filter biological safety cabinet, including: Cabinet, be provided with fan and mounting frame on the cabinet, be provided with cover on the communication of mounting frame, be provided with suction pipe on the communication of cover, the air inlet end of fan is connected with suction pipe, the air outlet end of fan is provided with exhaust pipe in the communication, Bracket, the bracket is rotatably installed on the cabinet and is located below the mounting frame, the filter plate is placed on the bracket, a plurality of through holes are arranged on the bottom of bracket, the abutting portion is arranged on both sides of bracket, The abutting rod is movably arranged on both sides of mounting frame, the abutting rod is used for abutting the lower end of abutting portion to fix the bracket, the spring is arranged on the mounting frame, the spring pushes the abutting rod to drive the abutting rod to be close to and abut with the abutting portion, Unlocking mechanism, the unlocking mechanism is arranged on both sides of mounting frame, the unlocking mechanism is used for driving the abutting rod to retract into the mounting frame and away from the abutting portion.

2. The air filter biological safety cabinet according to claim 1, wherein: The mounting frame is provided with a sliding groove, the abutting rod is movably installed at the sliding groove, the abutting ring for the abutting of the spring is arranged on the abutting rod, and the spring is arranged at the sliding groove and abuts with the abutting ring.

3. The air filter biological safety cabinet according to claim 2, wherein: The unlocking mechanism includes a sliding handle and a limiting groove, the sliding handle is connected with the abutting rod and drives the abutting rod to move, the limiting groove is communicated with the sliding groove, the limiting groove is composed of a horizontal channel and a side channel, and the side channel is used for moving the sliding handle into to keep the state that the abutting rod retracts into the mounting frame.

4. The air filter biological safety cabinet according to claim 1, wherein: The abutting rod is provided with an abutting block for abutting with the lower end of the abutting portion, the bottom of the abutting block is a guide inclined surface, and the abutting portion can push the guide inclined surface to drive the abutting block to retract into the mounting frame.

5. The air filter biological safety cabinet according to claim 1, wherein: Both sides of the bracket are provided with bending plates, and the two bending plates are used for abutting with the top of the filter plate.

6. The air filter biological safety cabinet according to claim 1, wherein: The mounting frame is provided with a limiting plate, the rear end of the bracket is provided with a rear plate for abutting with the filter plate, the inner side of the limiting plate is sequentially provided with an abutting inclined surface and a vertical surface from bottom to top, the abutting inclined surface and the vertical surface are used for cooperating with the rotating process of the bracket to push the filter plate to abut with the rear plate, and the bracket is provided with a gap for the limiting plate to pass through.

7. The air filter biological safety cabinet according to claim 1, wherein: The top of the mounting frame is provided with a square rubber ring for pressing the filter plate above.

8. The air filter biological safety cabinet according to claim 1, wherein: The mounting frame is provided with a supporting block for supporting the bracket from below.

9. The air filter biological safety cabinet according to claim 1, wherein: The bracket is provided with a handle.

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