Bag-in and bag-out safety protection type filter box

Abstract

The utility model provides a bag-in and bag-out safety protection type filter box which comprises a box body and a high-efficiency filter, a ventilation channel is arranged in the box body, the high-efficiency filter is installed in the middle of the ventilation channel, an opening is formed in the side, right facing the high-efficiency filter, of the box body, a sealing door is movably installed in the opening, and a differential pressure gauge is arranged at the top of the box body. The detection end of the differential pressure gauge is located in the box body, the opening is provided with a manual pressing device for pressing the high-efficiency filter, the bottom of the box body is provided with an annular supporting leg, one side of the annular supporting leg is provided with a first fixing lug, one side of the sealing door is provided with a second fixing lug, and the first fixing lug and the second fixing lug are connected through a C-shaped buckle and a nut sleeve. The filter box adopts the linkage pressing filter device of the manual pressing device, facilitates the installation operation of the safety bag, ensures reliable pressing, is provided with an efficient differential pressure gauge, detects the pressure difference of the inlet end and the outlet end of the filter box in real time, is simple in structure, adopts nut locking to facilitate the installation operation of the safety bag, and improves the filter efficiency.

Description

Technical Field

[0001] The utility model relates to the field of biological safety, in particular to a bag-in-bag-out safety protection type filter box. Background Art

[0002] Waste gas from biological laboratories, some factories and hospitals, and polluted gases discharged from biological research laboratories, disease control centers, microbiology research institutes, etc. must be collected and treated by high-efficiency filters (with a filtration efficiency of 99.99% for particles greater than or equal to 0.3μm) before they can be discharged into the atmosphere. Such high-efficiency filters not only need to be regularly inspected and replaced according to actual usage, but also the replaced high-efficiency filters need to be sealed and handled in accordance with standardized standards for the treatment of production waste laws and regulations. Moreover, the replaced high-efficiency filters are dangerous and are contaminated, so they need to be isolated and sealed during the replacement operation. How to design a new bag-in-bag-out filtration system that is safe, efficient, airtight, and easy to detect and disinfect is an urgent problem to be solved.

[0003] Therefore, it is necessary to design a bag-in-bag-out safety protection type filter box. Utility Model Content

[0004] In view of the technical defects existing in the background technology, the utility model proposes a bag-in-bag-out safety protection type filter box, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0005] A bag-in-bag-out safety and protective filter box comprises a box body and a high-efficiency filter, wherein a ventilation corridor is arranged in the box body, and the high-efficiency filter is installed in the middle of the ventilation corridor, an opening is arranged on the side of the box body facing the high-efficiency filter, a sealing door is movably installed in the opening, a differential pressure gauge is arranged on the top of the box body, and the detection end of the differential pressure gauge is located in the box body, and a manual clamping device for clamping the high-efficiency filter is arranged in the opening, an annular supporting foot is arranged at the bottom of the box body, a first fixing ear is arranged at one side of the annular supporting foot, and a second fixing ear is arranged at one side of the sealing door, and the first fixing ear and the second fixing ear are connected by a C-shaped buckle and a nut sleeve.

[0006] Furthermore, the input end and the output end of the box body are respectively provided with an air inlet box body and an air outlet box body.

[0007] Furthermore, the inlet and outlet sides of the ventilation tunnel are both provided with closed corners and ring feet.

[0008] Furthermore, a detection scanning mechanism and a fixing frame are respectively provided at positions of the ventilation passage close to the high efficiency filter.

[0009] Furthermore, a PAO generating port is provided on one side of the box body close to the input end.

[0010] Furthermore, a PAO upstream detection port and a PAO downstream detection port are respectively provided on one side of the box body close to the output end.

[0011] Furthermore, a gas dispersing device is provided at the input end of the box.

[0012] Furthermore, quick-release tighteners are provided at the connections between the air inlet box body and the air outlet box body and the box body.

[0013] Compared with the prior art, the bag-in-bag-out safety protection type filter box provided by the utility model has the following beneficial effects:

[0014] The utility model discloses a bag-in-bag-out safety protection filter box with a simple structure, adopts a linkage clamping filter device with a manual clamping device and is convenient for the installation and operation of the safety bag, ensuring reliable clamping. It is equipped with a high-efficiency differential pressure gauge to detect the differential pressure at the inlet and outlet of the filter box in real time. It has a simple structure and adopts nut locking to facilitate the installation and operation of the safety bag, thereby improving the filtering efficiency and being beneficial for leak detection testing, thereby improving the overall air tightness and safety. The mechanical linkage clamping handle has a simple structure and runs smoothly, which can play a clamping role and ensure reliable clamping, reducing tedious and repeated steps of tightening screws, thereby improving the efficiency of installation while ensuring the sealing of the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a bag-in-bag-out safety protection type filter box in the utility model.

[0016] Figure 2 It is a front view of a bag-in-bag-out protective filter box in the utility model.

[0017] Figure 3 It is a schematic diagram of the connection between the box body and the sealed door in the utility model.

[0018] Figure 4 It is a side view of a bag-in-bag-out safety protection type filter box in the utility model.

[0019] Among them, 1. box body, 2. opening, 3. sealing door, 4. differential pressure gauge, 5. manual clamping device, 6. annular support foot, 7. first fixing ear, 8. second fixing ear, 9. C-type buckle, 10. air inlet box body, 11. air outlet box body, 12. ring foot support, 13. detection scanning mechanism, 14. PAO generating port, 15. PAO upstream detection port, 16. PAO downstream detection port, 17. quick-release clamp. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "middle", "inside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0021] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0022] See also Figure 1-4 A bag-in-bag-out safety filter box comprises a box body 1 and a high-efficiency filter, wherein a ventilation passage is arranged in the box body 1, and the high-efficiency filter is installed in the middle of the ventilation passage, and an opening 2 is arranged on the side of the box body 1 facing the high-efficiency filter, and a sealing door 3 is movably installed in the opening 2, and a sealing strip is arranged at the connection between the sealing door 3 and the opening 2. A differential pressure gauge bracket is arranged on the top of the box body 1, and a differential pressure gauge 4 is installed on the differential pressure gauge bracket, and the detection end of the differential pressure gauge 4 is located in the box body 1, and a manual clamping device 5 for clamping the high-efficiency filter is arranged on the opening 2, and an annular support foot 6 is arranged at the bottom of the box body 1, and a first fixing ear 7 is arranged on one side of the annular support foot 6, and a second fixing ear 8 is arranged on one side of the sealing door 3, and the first fixing ear 7 and the second fixing ear 8 are connected by a C-type buckle 9 and a nut sleeve.

[0023] The sealing door 3 can prevent the internal gas leakage of the box body 1 and the outside and provide a placement position for the filter when replacing the filter. The bottom of the box body 1 and the sealing door 3 are locked by the C-type buckle 9 and the screw nut. At this time, the sealing door 3 can serve as a platform for placing the high-efficiency filter, making the replacement process convenient and quick for the staff. When installing the high-efficiency filter for the first time, the new filter unit is pushed directly into the filter box body 1 along the track and locked, and then the PVC bag is installed on the specially designed flange mouth and fastened with a safety belt to ensure the seal between the PVC bag and the flange. Finally, the PVC bag is folded and the sealing door 3 is closed to ensure that the PVC bag and the filter unit are enclosed together in the bag inlet and bag outlet box body 1.

[0024] In one embodiment of the utility model, the input end and the output end of the box body 1 are respectively provided with an air inlet box body 10 and an air outlet box body 11. The air inlet box body 10 is provided with an air inlet, and the air outlet box body 11 is provided with an air outlet.

[0025] In one embodiment of the utility model, the inlet and outlet sides of the ventilation tunnel are both provided with closed corners and ring feet 12, and the ring feet 12 are used to fix the box body 1 to prevent the box body 1 from deformation.

[0026] In one embodiment of the utility model, a detection scanning mechanism 13 and a fixing frame are respectively provided at a position of the ventilation passage close to the high efficiency filter, the fixing frame is used to fix the high efficiency filter, and the detection scanning mechanism 13 is used to detect gas.

[0027] In one embodiment of the present invention, a PAO generating port 14 is provided on one side of the box body 1 close to the input end.

[0028] In an embodiment of the present invention, a PAO upstream detection port 15 and a PAO downstream detection port 16 are respectively provided on one side of the box body 1 close to the output end.

[0029] In one embodiment of the utility model, a gas dispersing device is provided at the input end of the box 1. When the bag-in-bag-out is working, the gas can be dispersed through the gas dispersing device when entering the air inlet, so that the passing gas is evenly dispersed to the filter surface, improving the filtration efficiency, and at the same time facilitating the leak detection test, and improving the overall air tightness and safety.

[0030] In one embodiment of the utility model, the connection between the air inlet box 10 and the air outlet box 11 and the box 1 is provided with a quick release clamp 17. The air inlet box 10 and the air outlet box 11 can be quickly removed by the quick release clamp 17. The air inlet box 10 and the air outlet box 11 and the box 1 are changed from screw and nut locking to quick release compression. The cumbersome and repeated screw locking steps are reduced, and the sealing of the box 1 is ensured while the efficiency of installation is improved.

[0031] The utility model discloses a bag-in-bag-out safety protection filter box with a simple structure, adopts a linkage clamping filter device of a manual clamping device 5 and is convenient for the installation and operation of the safety bag, ensuring reliable clamping, and is provided with a high-efficiency differential pressure gauge 4 for real-time detection of the differential pressure at the inlet and outlet ends of the filter box. The utility model has a simple structure and adopts nut locking to facilitate the installation and operation of the safety bag, thereby improving the filtering efficiency and being conducive to leak detection testing, thereby improving the overall air tightness and safety. The mechanical linkage clamping handle has a simple structure and runs smoothly, can play a clamping role, ensuring reliable clamping, reducing tedious and repeated steps of locking screws, while ensuring the sealing of the box body 1 and improving the efficiency of installation.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A bag-in-bag-out safety filter box, characterized in that: The invention comprises a box (1) and a high-efficiency filter, wherein a ventilation passage is arranged in the box (1), and the high-efficiency filter is installed in the middle of the ventilation passage; an opening (2) is arranged on a side of the box (1) facing the high-efficiency filter, and a sealing door (3) is movably installed in the opening (2); a differential pressure gauge (4) is arranged on the top of the box (1), and the detection end of the differential pressure gauge (4) is located in the box (1); a manual pressing device (5) for pressing the high-efficiency filter is arranged in the opening (2); an annular supporting foot (6) is arranged on one side of the annular supporting foot (6); a second fixing ear (8) is arranged on one side of the sealing door (3); the first fixing ear (7) and the second fixing ear (8) are connected by a C-shaped buckle (9) and a nut sleeve.

2. The bag-in-bag-out safety filter box according to claim 1, characterized in that: The input end and the output end of the box body (1) are respectively provided with an air inlet box body (10) and an air outlet box body (11).

3. The bag-in-bag-out safety filter box according to claim 1, characterized in that: The inlet and outlet sides of the ventilation tunnel are both provided with closed corners and ring foot supports (12).

4. The bag-in-bag-out safety filter box according to claim 1, characterized in that: The ventilation passage is provided with a detection scanning mechanism (13) and a fixing frame at a position close to the high efficiency filter.

5. The bag-in-bag-out safety filter box according to claim 1, characterized in that: A PAO generating port (14) is provided on one side of the box body (1) close to the input end.

6. The bag-in-bag-out safety filter box according to claim 1, characterized in that: A PAO upstream detection port (15) and a PAO downstream detection port (16) are respectively arranged on one side of the box body (1) close to the output end.

7. The bag-in-bag-out safety filter box according to claim 1, characterized in that: The input end of the box (1) is provided with a gas dispersing device.

8. The bag-in-bag-out safety filter box according to claim 2, characterized in that: The connection points between the air inlet box body (10) and the air outlet box body (11) and the box body (1) are both provided with quick-release tighteners (17).

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