Two-stage airtight filtering device of sterile isolator

Abstract

The utility model relates to the technical field of sterile isolators, in particular to a sterile isolator two-stage airtight filtering device which comprises a filtering box body, an air inlet is formed in the left side of the filtering box body, a purification air guide pipe is arranged on the right side of the filtering box body, and a first U-shaped groove plate and a second U-shaped groove plate are arranged on the inner wall of the filtering box body. A primary filter screen plate is inserted into the first U-shaped groove plate, a first rubber lining is arranged at the joint of the primary filter screen plate and the first U-shaped groove plate, an activated carbon filter screen plate is inserted into the second U-shaped groove plate, and a second rubber lining is arranged at the joint of the activated carbon filter screen plate and the second U-shaped groove plate. According to the two-stage airtight filtering device of the sterile isolator, through the two-stage filtering and multiple sealing design, the air purification efficiency and the safety of the sterile environment are remarkably improved, and through the synergistic effect of the primary filtering net plate and the activated carbon filtering net plate, large particulate matter can be intercepted in stages, and harmful gas and peculiar smell can be adsorbed in stages.

Description

TECHNICAL FIELD

[0001] The utility model relates to aseptic isolator technical field, concretely is aseptic isolator two -stage air -tightness filter device. BACKGROUND

[0002] Aseptic isolator is a kind of equipment specially designed to provide sterile environment, and is widely used in biological medicine, pharmaceutical, cell culture, laboratory research and other fields.Its main function is to isolate the direct contact between operating personnel and sample, to prevent the influence of external pollutants (such as bacteria, dust and harmful gas) on the sample in the sterile space.Aseptic isolator is usually equipped with high-efficiency filter system to ensure that the air entering the inside of the isolator is subjected to strict purification treatment, so as to maintain high-standard sterile conditions.

[0003] The patent with publication number CN221062110U discloses a kind of aseptic isolator, including isolator body, mounting piece, coarse filter and locking mechanism, and isolator body has mounting hole;Mounting piece includes filter screen plate and installation plate surrounded in the peripheral side of filter screen plate, installation plate has slot, coarse filter is inserted into slot, and filter screen plate corresponds with coarse filter;Mounting piece is connected with isolator body, and mounting piece can rotate relative to isolator body, to close or open mounting hole;Locking mechanism is arranged on installation plate, and locking mechanism rotates relative to installation plate, to be in contact with the peripheral side of mounting hole or be away from contact, when locking mechanism is in contact with the peripheral side of mounting hole, mounting piece is fixed on isolator body, and coarse filter is located in mounting hole.The aseptic isolator of the present application improves the replacement efficiency of coarse filter.

[0004] Although the above prior art improves the replacement efficiency of coarse filter, but its design still has certain deficiency.The existing coarse filter is directly inserted into the slot of mounting piece, and the sealing property of the connection between coarse filter and mounting piece cannot be ensured.This can cause part of air to bypass coarse filter and enter the inside of aseptic isolator, thereby reducing the safety of sterile environment.In addition, the filtering effect of single coarse filter cannot meet the effective filtering demand of particulate matter in air, resulting in that sterile environment can be contaminated.In view of these problems, we propose aseptic isolator two -stage air -tightness filter device, which aims to improve filtering efficiency and air tightness by two -stage filtering design, to ensure the stability of sterile environment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing aseptic isolator two -stage air -tightness filter device to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a sterile isolator double -stage air -tightness filtering device, including filter box, the left side of filter box is equipped with air inlet, and air inlet is as the main passage of external air entering device, is equipped with protective net in air inlet, and protective net is used for blocking the foreign matter or big granule contaminant and enters filter box, the right side of filter box is equipped with purification air duct, and purification air duct is used for sending the clean air after filtering to sterile isolator, the inner wall of filter box is equipped with first U -shaped groove board and second U -shaped groove board, first U -shaped groove board is located the left of second U -shaped groove board, and first U -shaped groove board and second U -shaped groove board are used for fixing primary filter screen and activated carbon filter screen respectively,

[0008] The first U-shaped groove board is inserted with a primary filter screen, which is used to intercept large particles in the air. The connection between the primary filter screen and the first U-shaped groove board is provided with a first rubber lining for enhancing the air tightness between the primary filter screen and the first U-shaped groove board. The second U-shaped groove board is inserted with an activated carbon filter screen, which is used to adsorb harmful gases and odors. The connection between the activated carbon filter screen and the second U-shaped groove board is provided with a second rubber lining for improving the sealing effect between the activated carbon filter screen and the second U-shaped groove board.

[0009] The front side of the filter box is provided with a maintenance opening for the primary filter screen and the activated carbon filter screen to pass through, which is used for the installation, disassembly and maintenance of the filter screen. The inner wall of the maintenance opening is bonded with a second frame-shaped rubber pad, which is used to seal the gap between the maintenance opening and the sealing back plate. The front side of the filter box is also provided with a rectangular groove in communication with the maintenance opening, which is used to accommodate a cover plate. The inner wall of the rectangular groove is bonded with a first frame-shaped rubber pad, which is used to enhance the air tightness between the cover plate and the rectangular groove. The rectangular groove is provided with a cover plate, and the rear side of the cover plate is provided with a sealing back plate, which is used to compress the primary filter screen and the activated carbon filter screen. The rear side of the sealing back plate is provided with two strip-shaped rubber blocks, which are used to further seal the connection between the filter screen and the front side structure.

[0010] A mounting hole is provided in the middle of the front side of the cover plate, which is used to penetrate a locking screw to fix the cover plate. The mounting hole is connected with a locking screw, which is used to compress the cover plate through threaded connection. The front end of the locking screw is provided with a compression plate for fixing the position of the cover plate. The compression plate buffers the locking pressure through an annular rubber pad. The middle of the rear side of the inner wall of the filter box is provided with a fixing rod, which is used to provide a fixed fulcrum for the locking screw. The front end of the fixing rod is provided with a threaded groove for threaded connection of the locking screw. The threaded groove realizes the fastening of the locking screw through threaded cooperation.

[0011] Preferably, the right end of the outer wall of the purification air duct is provided with a flange plate, the flange plate is detachably connected to the air inlet end of the sterile isolator through bolts, and the flange plate is used for connecting the air inlet end of the sterile isolator and ensuring detachable sealing.

[0012] Preferably, the first rubber lining is bonded in the first U-shaped groove plate, the outer side of the primary filter screen plate is tightly attached to the inner wall of the first rubber lining, the first rubber lining is tightly attached to the primary filter screen plate through elastic deformation, the rear side of the left strip-shaped rubber block is tightly attached to the front side of the primary filter screen plate, and the outer side of the left strip-shaped rubber block is tightly attached to the inner wall of the first rubber lining, so that the left strip-shaped rubber block is used for filling the gap between the primary filter screen plate and the front side structure.

[0013] Preferably, the second rubber lining is bonded in the second U-shaped groove plate, the outer side of the activated carbon filter screen plate is tightly attached to the inner wall of the second rubber lining, the second rubber lining is tightly attached to the activated carbon filter screen plate through elastic compression, the rear side of the right strip-shaped rubber block is tightly attached to the front side of the activated carbon filter screen plate, and the outer side of the right strip-shaped rubber block is tightly attached to the inner wall of the second rubber lining, so that the right strip-shaped rubber block is used for preventing air leakage between the activated carbon filter screen plate and the mounting structure.

[0014] Preferably, when the cover plate is closed, the outer side of the cover plate is tightly attached to the inner wall of the first frame-shaped rubber pad, the first frame-shaped rubber pad realizes sealing of the cover plate and the rectangular groove through elastic deformation, the outer side of the sealing back plate is tightly attached to the inner wall of the second frame-shaped rubber pad, and the second frame-shaped rubber pad is used for blocking external air from penetrating through the maintenance opening.

[0015] Preferably, the front side of the cover plate is provided with two left-right symmetrical handles, the outer wall of the handle is provided with an anti-skid sleeve, and the handle is convenient for operators to quickly open or close the cover plate.

[0016] Preferably, the front side of the pressing plate is rotationally connected with a rocker, the rocker simplifies the rotation operation of the locking screw through the lever principle, the rear side of the pressing plate is provided with an annular rubber pad, the rear side of the annular rubber pad abuts against the front side of the cover plate, and the annular rubber pad is used for avoiding abrasion caused by direct contact between the pressing plate and the cover plate.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1、The sterile isolator double-stage air-tightness filtering device, through double-stage filtering and multiple sealing design, significantly improves air purification efficiency and safety of a sterile environment, and the synergistic effect of the primary filter screen plate and the activated carbon filter screen plate can intercept large particles, adsorb harmful gases and odors in stages, and effectively solves the problem of insufficient filtering capacity of a single coarse filter.

[0019] 2. The sterile isolator double-stage airtightness filtering device adopts a multi-layer sealing structure, eliminates the sealing defects of traditional slot-type filters through elastic deformation and close fitting, prevents unfiltered air from leaking, and guarantees the airtightness of the sterile space.

[0020] 3. The sterile isolator double-stage airtightness filtering device is designed in combination of the cover plate and the locking screw, greatly improves the replacement efficiency of the filter screen plate in combination with the convenience of the rocker operation, avoids abrasion caused by direct contact of components through the buffering effect of the pressing plate and the annular rubber pad, and prolongs the service life of the equipment.

[0021] 4. The sterile isolator double-stage airtightness filtering device is further enhanced in practicability and maintenance convenience in combination of the optimized layout of the maintenance port, the anti-slip design of the handle and the detachable connection of the flange plate. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall use state structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the assembly structure of the filter box, the primary filter screen plate and the activated carbon filter screen plate in the utility model;

[0025] Figure 4 It is a sectional structure schematic diagram of the filter box in the utility model;

[0026] Figure 5 It is a schematic diagram of the assembly structure of the cover plate and the locking screw in the utility model;

[0027] In the drawing: 1, filter box; 10, air inlet; 11, purification air guide pipe; 12, flange plate; 13, maintenance port; 14, rectangular groove; 15, first U-shaped groove plate; 16, second U-shaped groove plate; 17, first rubber lining; 18, second rubber lining; 19, fixed rod; 190, threaded groove; 2, primary filter screen plate; 3, activated carbon filter screen plate; 4, cover plate; 40, sealing back plate; 41, mounting hole; 42, strip-shaped rubber block; 43, handle; 5, locking screw; 50, pressing plate; 51, rocker; 52, annular rubber pad; 6, protective net; 7, first frame-shaped rubber pad; 8, second frame-shaped rubber pad. DETAILED DESCRIPTION

[0028] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of protection of the utility model.

[0029] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0030] Please refer to Figures 1-5 The utility model provides a technical scheme:

[0031] The sterile isolator two-stage air-tightness filtering device, including filter box body 1, the left side of filter box body 1 is equipped with air inlet 10, air inlet 10 is as the main passageway of external air entering device, air inlet 10 is equipped with protective net 6, protective net 6 is used for blocking foreign matter or large particle pollutants to enter filter box body 1, the right side of filter box body 1 is equipped with purification air guide pipe 11, and purification air guide pipe 11 is used to send clean air after filtering to the sterile isolator, and the inner wall of filter box body 1 is equipped with first U-shaped groove plate 15 and second U-shaped groove plate 16, first U-shaped groove plate 15 is located at the left of second U-shaped groove plate 16, and first U-shaped groove plate 15 and second U-shaped groove plate 16 are used to fix primary filter screen plate 2 and activated carbon filter screen plate 3 respectively;

[0032] The first U-shaped groove plate 15 is inserted with primary filter screen plate 2, and primary filter screen plate 2 is used to intercept large particles in air, and the connecting portion of primary filter screen plate 2 and first U-shaped groove plate 15 is equipped with first rubber lining 17, and first rubber lining 17 is used to enhance the air tightness between primary filter screen plate 2 and first U-shaped groove plate 15, and the second U-shaped groove plate 16 is inserted with activated carbon filter screen plate 3, and activated carbon filter screen plate 3 is used to adsorb harmful gas and peculiar smell, and the connecting portion of activated carbon filter screen plate 3 and second U-shaped groove plate 16 is equipped with second rubber lining 18, and second rubber lining 18 is used to improve the sealing effect between activated carbon filter screen plate 3 and second U-shaped groove plate 16;

[0033] The front side of the filter box 1 is provided with a maintenance opening 13 for the primary filter screen plate 2 and the activated carbon filter screen plate 3 to pass through, the maintenance opening 13 is used for the installation, disassembly and maintenance of the filter screen plate, the inner wall of the maintenance opening 13 is bonded with a second frame-shaped rubber pad 8, the second frame-shaped rubber pad 8 is used for sealing the gap between the maintenance opening 13 and the sealing back plate 40, the front side of the filter box 1 is also provided with a rectangular groove 14 in communication with the maintenance opening 13, the rectangular groove 14 is used for accommodating the cover plate 4, the inner wall of the rectangular groove 14 is bonded with a first frame-shaped rubber pad 7, the first frame-shaped rubber pad 7 is used for enhancing the air tightness between the cover plate 4 and the rectangular groove 14, the rectangular groove 14 is provided with the cover plate 4, the rear side of the cover plate 4 is provided with the sealing back plate 40, the sealing back plate 40 is used for pressing the primary filter screen plate 2 and the activated carbon filter screen plate 3, the rear side of the sealing back plate 40 is provided with two strip-shaped rubber blocks 42, the strip-shaped rubber blocks 42 are used for further sealing the connection between the filter screen plate and the front side structure;

[0034] The middle part of the front side of the cover plate 4 is provided with a mounting hole 41, the mounting hole 41 is used for penetrating the locking screw 5 to realize the fixation of the cover plate 4, the mounting hole 41 is connected with the locking screw 5, the locking screw 5 is used for pressing the cover plate 4 through the threaded connection, the front end of the locking screw 5 is provided with a pressing plate 50 for fixing the position of the cover plate 4, the pressing plate 50 buffers the locking pressure through the annular rubber pad 52, the middle part of the rear side of the inner wall of the filter box 1 is provided with a fixing rod 19, the fixing rod 19 is used for providing a fixed fulcrum of the locking screw 5, the front end of the fixing rod 19 is provided with a threaded groove 190 for the threaded connection of the locking screw 5, the threaded groove 190 realizes the fastening of the locking screw 5 through the threaded cooperation.

[0035] In this embodiment, the right end of the outer wall of the purification air guide pipe 11 is provided with a flange plate 12, the flange plate 12 is detachably connected to the air inlet end of the sterile isolator through bolts, the flange plate 12 is used for connecting the air inlet end of the sterile isolator and ensuring the detachable sealing.

[0036] Specifically, the first rubber lining 17 is bonded in the first U-shaped groove plate 15, the outer side of the primary filter screen plate 2 is tightly combined with the inner wall of the first rubber lining 17, the first rubber lining 17 is tightly combined with the primary filter screen plate 2 through elastic deformation, the rear side of the left strip-shaped rubber block 42 is tightly combined with the front side of the primary filter screen plate 2, and the outer side of the left strip-shaped rubber block 42 is tightly combined with the inner wall of the first rubber lining 17, the left strip-shaped rubber block 42 is used for filling the gap between the primary filter screen plate 2 and the front side structure.

[0037] Further, the second rubber lining 18 is bonded in the second U-shaped groove plate 16, the outer side of the activated carbon filter screen plate 3 is tightly attached to the inner wall of the second rubber lining 18, the second rubber lining 18 is sealed with the activated carbon filter screen plate 3 through elastic compression, the rear side of the right strip-shaped rubber block 42 is tightly attached to the front side of the activated carbon filter screen plate 3, and the outer side of the right strip-shaped rubber block 42 is tightly attached to the inner wall of the second rubber lining 18, the right strip-shaped rubber block 42 is used to prevent air leakage between the activated carbon filter screen plate 3 and the mounting structure.

[0038] Further, when the cover plate 4 is closed, the outer side of the cover plate 4 is tightly attached to the inner wall of the first frame-shaped rubber pad 7, the first frame-shaped rubber pad 7 is deformed to seal the cover plate 4 and the rectangular groove 14, the outer side of the sealing back plate 40 is tightly attached to the inner wall of the second frame-shaped rubber pad 8, and the second frame-shaped rubber pad 8 is used to prevent external air from entering through the maintenance opening 13.

[0039] Further, the front side of the cover plate 4 is provided with two left and right symmetrical handles 43, the outer wall of the handle 43 is provided with an anti-skid sleeve, and the handle 43 is convenient for the operator to quickly open or close the cover plate 4.

[0040] Further, the front side of the pressing plate 50 is rotationally connected with a rocker 51, the rocker 51 simplifies the rotation operation of the locking screw 5 through the lever principle, the rear side of the pressing plate 50 is provided with an annular rubber pad 52, the rear side of the annular rubber pad 52 is abutted against the front side of the cover plate 4, and the annular rubber pad 52 is used to avoid abrasion caused by direct contact between the pressing plate 50 and the cover plate 4.

[0041] In use, the sterile isolator double-stage airtight filtering device of the embodiment blocks large-particle foreign matters by the protective net 6 in the air inlet 10, and then filters the air by the double-stage filtering of the primary filter screen plate 2 and the activated carbon filter screen plate 3 in sequence: the primary filter screen plate 2 intercepts dust and other large-particle matters, and the activated carbon filter screen plate 3 adsorbs harmful gas and odor; the filtered clean air is delivered into the sterile isolator through the purification air guide pipe 11, the flange 12 at the right end of the purification air guide pipe 11 is connected with the air inlet end of the sterile isolator through bolts to ensure airtightness; when the primary filter screen plate 2 or the activated carbon filter screen plate 3 needs to be replaced, the locking screw 5 is separated from the fixed rod 19 by rotating the rocker 51, the cover plate 4 is unlocked, the operator pulls the cover plate 4 outward by holding the pull handles 43 symmetrically arranged at the front side of the cover plate 4, and the cover plate 4 drives the sealing back plate 40 to be separated from the rectangular groove 14, at this time, the maintenance opening 13 is completely opened; the primary filter screen plate 2 is pulled out from the first U-shaped slot plate 15 or the activated carbon filter screen plate 3 is taken out from the second U-shaped slot plate 16 through the maintenance opening 13, after the new filter screen plate is replaced, the cover plate 4 is pushed into the rectangular groove 14 again, the strip-shaped rubber block 42 at the back side of the sealing back plate 40 is pressed against the front side of the filter screen plate, at the same time, the outer side of the cover plate 4 is tightly attached to the first frame-shaped rubber pad 7, and the outer side of the sealing back plate 40 is tightly attached to the second frame-shaped rubber pad 8; then the cover plate 4 is locked by rotating the rocker 51 and cooperating with the fixed rod 19 through the thread groove 190, the annular rubber pad 52 at the back side of the pressing plate 50 buffers the locking pressure to avoid component abrasion; during the whole process, the first rubber lining 17 and the second rubber lining 18 respectively ensure the airtightness of the installation of the primary filter screen plate 2 and the activated carbon filter screen plate 3, the strip-shaped rubber block 42 further fills the gap between the filter screen plate and the installation structure, and finally high-efficiency filtering and multiple sealing are realized.

[0042] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, the above embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A sterile isolator with a two-stage airtight filtration system, comprising a filter housing (1), characterized in that: An air inlet (10) is provided on the left side of the filter box (1), and a protective net (6) is provided inside the air inlet (10). A purification air guide pipe (11) is provided on the right side of the filter box (1). A first U-shaped groove plate (15) and a second U-shaped groove plate (16) are provided on the inner wall of the filter box (1). The first U-shaped groove plate (15) is located to the left of the second U-shaped groove plate (16). A primary filter screen plate (2) is inserted into the first U-shaped groove plate (15). A first rubber liner (17) is provided at the connection between the primary filter screen plate (2) and the first U-shaped groove plate (15). An activated carbon filter screen plate (3) is inserted into the second U-shaped groove plate (16). A second rubber liner (18) is provided at the connection between the activated carbon filter screen plate (3) and the second U-shaped groove plate (16). A duct is provided on the front side of the filter box (1) for the primary filter screen plate (2) and the activated carbon filter screen plate (3) to pass through. The inner wall of the maintenance opening (13) is bonded with a second frame-shaped rubber pad (8). The front side of the filter box (1) is also provided with a rectangular groove (14) communicating with the maintenance opening (13). The inner wall of the rectangular groove (14) is bonded with a first frame-shaped rubber pad (7). The rectangular groove (14) is provided with a cover plate (4). The rear side of the cover plate (4) is provided with a sealing back plate (40). The rear side of the sealing back plate (40) is provided with two strip-shaped rubber blocks (42). The middle part of the front side of the cover plate (4) is provided with an installation hole (41). The installation hole (41) is connected to a locking screw (5). The front end of the locking screw (5) is provided with a pressure plate (50) for fixing the position of the cover plate (4). The middle part of the rear side of the inner wall of the filter box (1) is provided with a fixing rod (19). The front end of the fixing rod (19) is provided with a threaded groove (190) for the locking screw (5) to be threaded.

2. The aseptic isolator dual-stage airtight filtration device according to claim 1, characterized in that: The right end of the outer wall of the purification air duct (11) is provided with a flange (12), which is detachably connected to the air inlet of the sterile isolator by bolts.

3. The aseptic isolator dual-stage airtight filtration device according to claim 1, characterized in that: The first rubber liner (17) is bonded to the first U-shaped groove plate (15). The outer side of the primary filter plate (2) is tightly attached to the inner wall of the first rubber liner (17). The rear side of the left strip rubber block (42) is tightly attached to the front side of the primary filter plate (2), and the outer side of the left strip rubber block (42) is tightly attached to the inner wall of the first rubber liner (17).

4. The aseptic isolator dual-stage airtight filtration device according to claim 1, characterized in that: The second rubber liner (18) is bonded to the second U-shaped groove plate (16). The outer side of the activated carbon filter plate (3) is tightly attached to the inner wall of the second rubber liner (18). The rear side of the right strip rubber block (42) is tightly attached to the front side of the activated carbon filter plate (3), and the outer side of the right strip rubber block (42) is tightly attached to the inner wall of the second rubber liner (18).

5. The aseptic isolator dual-stage airtight filtration device according to claim 1, characterized in that: When the cover plate (4) is closed, the outer side of the cover plate (4) is tightly fitted with the inner wall of the first frame rubber pad (7), and the outer side of the sealing back plate (40) is tightly fitted with the inner wall of the second frame rubber pad (8).

6. The aseptic isolator dual-stage airtight filtration device according to claim 1, characterized in that: The front side of the cover plate (4) is provided with two handles (43) arranged symmetrically on the left and right, and the outer wall of the handles (43) is provided with anti-slip sleeves.

7. The aseptic isolator dual-stage airtight filtration device according to claim 1, characterized in that: A rocker arm (51) is rotatably connected to the front side of the clamping plate (50), and an annular rubber pad (52) is provided on the rear side of the clamping plate (50). The rear side of the annular rubber pad (52) abuts against the front side of the cover plate (4).

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