Safe exhaust filtering unit for bag inlet and bag outlet of dust removal equipment

Abstract

The utility model provides a safe air exhaust filter unit used for bag inlet and outlet of dust removal equipment, which comprises a box body, an access door, an air inlet unit and an air outlet unit, the front surface of the box body is provided with a mounting port, a door frame is fixed on the mounting port, the periphery of the door frame is provided with a sealing element, and the air outlet unit is provided with a sealing cover. The edge of the access door is embedded into the sealing piece and covers the door frame, a fixed blocking frame is fixed to one side, corresponding to the installation opening, in the box body, a box body frame is fixed to the other side, a filter is installed between the fixed blocking frame and the box body frame, and the upper end and the lower end of the filter are filter supports fixed between the fixed blocking frame and the box body frame. Wherein the upstream detection mechanism and the downstream detection mechanism are mounted at the two ends of the box body, and the dust generating pipe assembly is arranged at the position, where the air inlet unit is mounted, of the box body; a replacement bag for replacing the filter is mounted on the door frame; by arranging the replacement bag, leakage of harmful particles with the outside is avoided when the filter is replaced, pollution is reduced, and meanwhile harmful substances are prevented from making direct contact with people.

Description

Technical Field

[0001] The utility model relates to a safe exhaust filter unit for bag inlet and bag outlet of dust removal equipment. Background Art

[0002] Exhaust filter boxes can be used in chemical and biological (CB) protection, chemical, biological and radiological (CBR) protection, nuclear, biological and chemical (NBC) protection pharmaceutical equipment, biosafety laboratories, animal disease research institutes, hospitals / CDCs, toxic waste isolation plants, food processing processes, microelectronics industry, chemical processing equipment, nuclear facility air handling systems, radioactive isotope processing equipment, genetic engineering, etc. The polluted gases discharged from the above occasions need to be treated by high-efficiency filters before being discharged into the atmosphere or exhaust devices.

[0003] The filter unit generally consists of an air inlet, a filter section, and an air outlet. Its main function is to prevent harmful substances from being directly discharged into the atmosphere, causing environmental pollution and affecting people's health.

[0004] The existing filtering equipment is based on the original dust removal and filtration system. Adding a filtering unit can further improve the filtration effect, better meet emission requirements, remove various dust particle pollutants, thereby reducing pollution to the environment, meeting environmental protection requirements, providing a more comfortable working environment, and ensuring the health and safety of personnel.

[0005] The existing filter unit has a compact structure and a reasonable design, but its filter element needs to be replaced after being used for a certain period of time. When replacing the filter element, the filter element is exposed to the air, which will cause aerosols containing radioactive, toxic and other harmful substances to be emitted into the air, causing leakage, posing a safety hazard and posing a great risk to people. Therefore, the basic filter unit does not have a method to prevent leakage during the filter replacement process, and the filter cannot be replaced safely, which will cause secondary pollution to the environment and pose a safety hazard to the operator. Utility Model Content

[0006] The purpose of this utility model is to address the above-mentioned problems in the existing technology and propose a safe exhaust filter unit for the bag in and out of dust removal equipment. By setting a replacement bag, it can prevent the leakage of harmful particles to the outside world when replacing the filter, reduce pollution, and prevent harmful substances from direct contact with personnel.

[0007] The purpose of the utility model can be achieved by the following technical solutions: A filter unit for dust removal equipment, comprising a box body, an inspection door, and an air inlet unit and an air outlet unit installed at both ends of the box body, characterized in that the front of the box body is provided with a mounting opening, a door frame is fixed on the mounting opening, a sealing member is provided on the periphery of the door frame, the edge of the inspection door is embedded in the sealing member and the door frame cover is arranged therein, a fixed baffle is inherently provided on one side of the box body corresponding to the mounting opening, and a box body frame is fixed on the other side, a filter is installed between the fixed baffle and the box frame, and the upper and lower ends of the filter are filter brackets fixed between the fixed baffle and the box frame, wherein:

[0008] An upstream detection mechanism and a downstream detection mechanism are installed at both ends of the box, the upstream detection mechanism is located at the air inlet unit, and the downstream detection mechanism is installed on the box frame and can move laterally;

[0009] The box body is provided with a dust generating pipe assembly at the air inlet unit;

[0010] A replacement bag for replacing the filter is installed on the door frame;

[0011] A pressing mechanism is fixedly mounted on the box frame, with its operating end located at the mounting opening. The pressing mechanism can move closer to or away from the filter.

[0012] Furthermore, the inner wall of the air inlet unit has a conical diverter plate, and the diverter plate is installed on the inner wall of the air inlet unit through a fixing frame.

[0013] Furthermore, the operating end of the clamping mechanism is installed on the surface of the box body on one side of the installation port and is located on the inner side of the connection between the door frame and the installation port. The cross section of the sealing member is U-shaped, and a concave groove is provided on the outer wall of the door frame.

[0014] Furthermore, the bag opening of the replacement bag is sleeved on the concave groove and fixed by a sealing ring, and the replacement bag is provided with a plurality of gloves that can be inserted into the replacement bag.

[0015] Furthermore, the edge of the access door is embedded in the U-shaped groove of the seal. An anti-fouling plate is installed inside the access door, and the anti-fouling plate is angled. Connecting ears are provided on both sides of the access door, and plum blossom handles are provided at the connecting ears to secure the access door to the box body. The anti-fouling plate is located close to the door frame. When the clamping mechanism is unlocked, the anti-fouling plate can interfere with the operating end of the clamping mechanism.

[0016] Furthermore, a mounting column for installing a dust pipe assembly is vertically fixed at the connection between the box body and the air inlet unit body. The dust pipe assembly includes an air inlet pipe passing through the box body and connected to the external equipment, and a dust pipe connected to the air inlet pipe. The dust pipe has four blowing heads.

[0017] Furthermore, the upstream detection mechanism is arranged behind the dust-generating pipe assembly on the air inlet path, and the downstream detection mechanism is installed on the box frame. The upstream detection mechanism includes an upstream detection joint installed on the box and an upstream detection tube connected to the upstream detection joint, and a plurality of detection holes are opened on the upstream detection tube. The downstream detection mechanism includes a downstream detection joint installed on the box, a screw, a screw fixing seat fixed on the inner walls of both sides of the box, a hollow detection column with a detection gap, a nut seat threadedly connected to the screw, a fixing plate fixed to the nut seat and also fixed to the detection column, and a downstream detection tube, the downstream detection tube is connected to the downstream detection joint, the screw passes through the box and the end passing through is connected to the handwheel, the detection column is connected and fixed to the fixing plate, the box frame has sliding grooves at the upper and lower ends, the detection column has pulleys installed in the sliding grooves at the upper and lower ends of the nut seat, guide seats are provided on the fixing plates at the upper and lower ends of the nut seat, and a guide rod fixed to the screw fixing seat at both ends is passed through the guide seat, the nut seat is guided by the guide rod and moves parallel to the screw, and the detection column moves parallel to the nut seat through the pulley.

[0018] Furthermore, the clamping mechanism includes a clamping frame located in the box frame and slightly smaller than the box frame, several cam boxes fixed on the clamping frame, two rotating rods passing through the cam box, a handle fixed at one end of the rotating rod and located at the mounting edge, cams installed at both ends of the rotating rod and located in the cam box, and a compression spring column. The two rotating rods are installed on the box frame and one end of the rotating rod passes through the box to the mounting edge. There is a certain distance between the cam box and the box frame. The box frame has ribs at the four corners. The compression spring column is arranged between the ribs and the clamping frame. There is a certain distance between the two rotating rods.

[0019] Furthermore, it is characterized in that a differential pressure gauge is provided above the box.

[0020] Furthermore, the inspection door is provided with a handle.

[0021] Compared with the prior art, the advantages of this application are:

[0022] 1. By setting up a replacement bag, it can prevent the leakage of harmful particles to the outside world when replacing the filter, thereby reducing pollution.

[0023] 2. The diverter plate diverts the air sent into the air inlet unit and enters evenly, while the dust pipe assembly blows the particles evenly through the filter.

[0024] 3. The filter is fixed and removed by rotating the handle to drive the rotating rod to rotate, and the position of the cam in the cam box and the compression spring are used to tighten or loosen the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1is a schematic diagram of the filtration unit;

[0026] Figure 2 This is a schematic diagram of the access door;

[0027] Figure 3 is a schematic diagram of the manifold;

[0028] Figure 4 This is a schematic diagram of the manifold installation;

[0029] Figure 5 This is a schematic diagram of the filter installation location;

[0030] Figure 6 It is a schematic diagram of removing the filter;

[0031] Figure 7 This is a schematic diagram of the air inlet of the box;

[0032] Figure 8 This is a schematic diagram of the air outlet of the box;

[0033] Figure 9 This is a schematic diagram of the air outlet of the box from another perspective;

[0034] Figure 10 is a schematic diagram of the detection column;

[0035] Figure 11 It is a schematic diagram of the cam position of the pressing mechanism;

[0036] Figure 12 is a schematic diagram of the clamping mechanism;

[0037] Figure 13 It is a schematic diagram of the cam;

[0038] Figure 14 It is a schematic diagram of the replacement bag fuse;

[0039] Figure 15 This is a diagram of the replacement bag installation;

[0040] Figure 16 This is a schematic diagram of the downstream testing agency;

[0041] In the figure, 1, box body; 101, door frame; 1011, concave groove; 1012, replacement bag; 10121, gloves; 102, mounting column; 103, box frame; 1031, retaining edge; 104, fixed retaining frame; 1041, 105, seal; 11, maintenance door; 111, plum blossom handle; 112, connecting ear; 113, anti-fouling plate; 12, differential pressure gauge; 13, air inlet unit; 131, diverter plate; 132, fixing frame; 14, air outlet unit; 21, handle; 22, pressing frame ; 23. Rotating rod; 24. Cam box; 25. Cam; 26. Compression spring column; 31. Handwheel; 32. Screw fixing seat; 33. Fixing plate; 34. Detection column; 341. Pulley; 342. Detection gap; 35. Downstream detection tube; 36. Screw; 37. Nut seat; 38. Guide rod; 381. Guide seat; 41. Dust-generating pipeline; 42. Blowing head; 43. Inlet pipe; 5. Filter; 51. Filter bracket; 61. Upstream detection connector; 62. Upstream detection tube; 63. Detection hole. DETAILED DESCRIPTION

[0042] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.

[0043] like Figure 1-16 As shown, a safe exhaust filter unit for bag inlet and outlet of dust removal equipment includes a box body 1, an inspection door 11, and an air inlet unit 13 and an air outlet unit 14 installed at both ends of the box body 1, characterized in that the front of the box body 1 is provided with a mounting port, a door frame 101 is fixed on the mounting port, a sealing member 105 is provided on the periphery of the door frame 101, the edge of the inspection door 11 is embedded in the sealing member 105 and the door frame 101 is covered therein, a fixed baffle 104 is inherently provided on one side of the box body 1 corresponding to the mounting port, and a box frame 103 is fixed on the other side, a filter 5 is installed between the fixed baffle and the box frame 103, and the upper and lower ends of the filter 5 are filter brackets 51 fixed between the fixed baffle and the box frame 103, wherein:

[0044] An upstream detection mechanism and a downstream detection mechanism are installed at both ends of the box body 1. The upstream detection mechanism is located at the air inlet unit 13, and the downstream detection mechanism is installed on the box body frame 103 and can move laterally.

[0045] The upstream detection mechanism detects the gas concentration and particle count upon entry, and the downstream detection mechanism detects the gas concentration and particle count after filtration. The comparison of the before and after data determines whether the sealing filtration requirements are met.

[0046] The box body 1 is provided with a dust generating pipe assembly at the air inlet unit 13;

[0047] A replacement bag 1012 for replacing the filter 5 is installed on the door frame 101;

[0048] like Figure 1 As shown, the air inlet unit 13, the air outlet unit 14 and the box body 1 are respectively connected and fixed by flanges and fastening bolts. The air inlet unit 13 and the air outlet unit 14 are both annular structures with openings at both ends.

[0049] like Figure 14-15 As shown, the application of the replacement bag 1012 is to first clean the outside of the inspection door 11, the working area and the surface of the box body 1, unscrew the locking plum blossom handle 111 on the inspection door 11, remove the inspection door 11, and use the replacement bag 1012 to bend the handle 21 to loosen the device that locks the filter 5. Operate the handle 21 located at the bottom to rotate 180° clockwise and the handle 21 located at the top to rotate 180° counterclockwise to change the filter 5 from the locked state to the released state, remove the filter 5 from the box body 1, pull it into the bottom of the bag as much as possible, and use a cable tie or hot melt shears to Seal the middle part of the bag (note: the cable tie or hot melt line needs to be in two sections, so that scissors can cut it between the two cable ties or hot melt lines), cut the middle part of the two sealing lines of the replacement bag 1012, wrap the breakpoint with tin foil or cut it directly with hot melt scissors, and check whether the sealing is intact (one side is the remaining filter 5, and the other side is the sealed bag on the box body 1). When replacing the filter 5, put the replacement bag 1012 containing the new filter 5 on the door frame 101, shorten the hot melt, remove the remaining replacement bag 1012, install the new filter 5, and tighten the handle 21.

[0050] A pressing mechanism is fixedly mounted on the box frame 103 , with its operating end located at the mounting opening. The pressing mechanism can move closer to or away from the filter 5 .

[0051] like Figure 3-4 As shown, further, the inner wall of the air inlet unit 13 has a conical diverter plate 131 , and the diverter plate 131 is installed on the inner wall of the air inlet unit 13 through a fixing frame 132 .

[0052] The diverter plate 131 in the above features can evenly disperse the air coming from the air inlet unit 13 .

[0053] like Figure 5-6 As shown, the operating end of the clamping mechanism is mounted on the surface of the box body on the side of the installation opening and is located inside the connection between the door frame 101 and the installation opening. The cross-section of the sealing member 105 is U-shaped, and a concave groove is provided on the outer wall of the door frame 101. The sealing member 105 is engaged and sealed with the inspection door 11, thereby improving the sealing performance.

[0054] Furthermore, the opening of the replacement bag 1012 is placed on the concave groove 1011 and fixed by a sealing ring. The replacement bag 1012 has a plurality of gloves 10121 that can be inserted into the replacement bag 1012. When replacing the filter 5, the replacement operation is performed through the gloves 10121 of the replacement bag 1012, eliminating direct contact and protecting the operator.

[0055] like Figure 2 、 Figure 5 As shown, further, the edge of the inspection door 11 is embedded in the U-shaped groove of the sealing member 105, and the interior of the inspection door 11 is provided with an anti-fool plate 113, and the anti-fool plate 113 is angled, and the inspection door 11 has connecting ears 112 on both sides, and the connecting ears 112 are provided with plum blossom handles 111 for fixing the inspection door 11 on the box body 1, and the anti-fool plate 113 is positioned close to the door frame 101, and when the clamping mechanism is not locked, the anti-fool plate 113 can interfere with the operating end of the clamping mechanism.

[0056] Among the above features, the anti-foolproof plate 113 cooperates with the handle 21 to play an anti-foolproof role, determining whether the filter 5 is locked. When it is not locked or the filter 5 is not installed in place, the anti-foolproof plate 113 of the inspection door 11 will contact the handle 21 or the filter 5, and the inspection door 11 cannot be closed at this time.

[0057] like Figure 7 As shown, further, a mounting column 102 for installing a dust pipe assembly is vertically fixed at the connection between the box body 1 and the air inlet unit 13. The dust pipe assembly includes an air inlet pipe 43 passing through the box body 1 and connected to the external equipment, and a dust pipe 41 connected to the air inlet pipe 43. The dust pipe 41 has four blowing heads 42.

[0058] In the above structure, air is taken in through the air inlet pipe 43 and sprayed out through the dust generating pipe 41 to the spray head 42, so that the particles are evenly distributed.

[0059] like Figure 7-9 、 Figure 16As shown, further, the upstream detection mechanism is arranged behind the dust-generating tube assembly on the air inlet path, and the downstream detection mechanism is installed on the box frame 103. The upstream detection mechanism includes an upstream detection joint 61 installed on the box 1 and an upstream detection tube 62 connected to the upstream detection joint 61. A plurality of detection holes 63 are provided on the upstream detection tube 62. The downstream detection mechanism includes a downstream detection joint installed on the box 1, a screw 36, a screw fixing seat 32 fixed to the inner walls of both sides of the box 1, a hollow detection column 34 with a detection slit 342, a nut seat 37 threadedly connected to the screw 36, and a nut seat 37 fixed to the nut seat 37 and also fixed to the detection column 34. The fixing plate 33 and the downstream detection tube 35 are connected to the downstream detection joint, the screw rod 36 passes through the box body 1 and the end that passes through is connected to the handwheel 31, the detection column 34 is connected and fixed to the fixing plate 33, the upper and lower ends of the box frame 103 have sliding grooves, the upper and lower ends of the detection column 34 have pulleys 341 installed in the sliding grooves, the fixing plates 33 at the upper and lower ends of the nut seat 37 are provided with guide seats 381 and the guide seats 381 are provided with guide rods 38 fixed to the screw rod fixing seats 32 at both ends, the nut seat 37 is guided by the guide rod 38 and moves parallel to the screw rod 36, and the detection column 34 moves parallel to the nut seat 37 through the pulley 341.

[0060] The upstream detection mechanism collects particles through the detection hole 63 on the detection tube and sends them to the upstream detection head for detection through the upstream detection tube 62. The downstream detection mechanism drives the screw rod 36 to rotate through the handwheel 31 to move the nut seat 37 on the screw rod 36. The fixing plate 33 fixes the detection column 34 and the nut seat 37 and moves with the nut seat 37 on the screw rod 36. The detection column 34 is guided by the pulley 341 along the sliding groove to make it move more smoothly. The wind filtered by the filter 5 enters the detection column 34 through the detection slit 342 and is then transported to the downstream detection joint through the downstream detection tube 35 for detection.

[0061] like Figure 11-13 As shown, further, the clamping mechanism includes a clamping frame 22 located in the box frame 103 and slightly smaller than the box frame 103, several cam boxes 24 fixed on the clamping frame 22, two rotating rods 23 passing through the cam box 24, a handle 21 fixed at one end of the rotating rod 23 and located at the mounting edge, cams 25 installed at both ends of the rotating rod 23 and located in the cam box 24, and a compression spring column 26. The two rotating rods 23 are installed on the box frame 103 and one end of the rotating rod 23 passes through the box 1 to the mounting edge. There is a certain distance between the cam box 24 and the box frame 103. The box frame 103 has a rib 1031 at the four corners. The compression spring column 26 is arranged between the rib 1031 and the clamping frame 22, and there is a certain distance between the two rotating rods 23.

[0062] The clamping mechanism is mainly used to clamp the filter 5. At the same time, the handles 21 of the two rotating rods 23 are turned so that the upper handle 21 rotates downward and the lower handle 21 rotates upward. Then, after the rotating rod 23 rotates, the protruding part of the cam is facing the clamping frame 22, which is in a locked state. The compression spring exerts force to move the clamping frame 22 toward the filter 5, clamping the filter 5. When in the released state, the protruding part of the cam 25 rotates away from the clamping frame 22. Since the rotating column is fixed on the box frame 103, the cam 25 squeezes the cam box 24 and the clamping frame 22 contracts inward to loosen the filter 5.

[0063] Furthermore, it is characterized in that a differential pressure gauge 12 is provided above the box.

[0064] Furthermore, the inspection door 11 is provided with a handle.

[0065] Principle: The filter unit takes in air through the air inlet unit 13, passes through the filter 5 for filtration, and then supplies air from the air outlet unit 14. The air is evenly diverted along the path through the diverter plate 131 and the dust-generating pipe assembly. An upstream detection mechanism and a downstream detection mechanism are respectively provided to detect the status of harmful particles before and after filtration. When replacing the filter 5, the filter unit uses a replacement bag 1012 for replacement. There is no leakage throughout the process and the environment is not polluted. At the same time, the filter unit is provided with multiple groups of filters 5 to enhance the filtering effect.

[0066] The technical solution of the above-mentioned utility model provides a solution that is significantly different from the existing technology to address the technical problem that the existing technology solution is too single. The parts not involved in the technical solution of this application are the same as the existing technology or can be implemented by using the existing technology, and will not be repeated here.

[0067] The technical solutions in the above embodiments have clearly and completely described the contents of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

Claims

1. A safe exhaust filter unit for bag inlet and outlet of dust removal equipment, comprising a box body, an access door, and an air inlet unit and an air outlet unit installed at both ends of the box body, characterized in that: The front of the box body is provided with a mounting opening, a door frame is fixed on the mounting opening, a seal is provided on the periphery of the door frame, the edge of the inspection door is embedded in the seal and the door frame cover is arranged therein, a fixed baffle is inherently provided on one side of the box body corresponding to the mounting opening, and a box body frame is fixed on the other side, a filter is installed between the fixed baffle and the box body frame, and the upper and lower ends of the filter are filter brackets fixed between the fixed baffle and the box body frame, wherein: An upstream detection mechanism and a downstream detection mechanism are installed at both ends of the box, the upstream detection mechanism is located at the air inlet unit, and the downstream detection mechanism is installed on the box frame and can move laterally; The box body is provided with a dust generating pipe assembly at the air inlet unit; A replacement bag for replacing the filter is installed on the door frame; A pressing mechanism is fixedly installed in the box frame, and its operating end is located at the installation opening. The pressing mechanism can move closer to or away from the filter.

2. A safe exhaust filter unit for bag inlet and outlet of dust removal equipment according to claim 1, characterized in that: The inner wall of the air inlet unit is provided with a conical diverter plate, and the diverter plate is mounted on the inner wall of the air inlet unit via a fixing frame.

3. The safe exhaust filter unit for bag inlet and outlet of dust removal equipment according to claim 1, characterized in that: The operating end of the clamping mechanism is installed on the surface of the box body on one side of the installation port and is located on the inner side of the connection between the door frame and the installation port. The cross section of the sealing member is U-shaped, and a concave groove is provided on the outer wall of the door frame.

4. A safe exhaust filter unit for bag inlet and outlet of dust removal equipment according to claim 3, characterized in that: The bag opening of the replacement bag is sleeved on the concave groove and fixed by a sealing ring. The replacement bag is provided with a plurality of gloves which can be extended into the replacement bag.

5. A safe exhaust filter unit for bag inlet and outlet of dust removal equipment according to claim 4, characterized in that: The edge of the inspection door is embedded in the U-shaped groove of the seal, and the inspection door has connecting ears on both sides, and a plum blossom handle is provided at the connecting ears to fix the inspection door to the box body. The inspection door has an anti-foolproof plate inside, and the anti-foolproof plate is angled. The position of the anti-foolproof plate is close to the door frame. When the clamping mechanism is not locked, the anti-foolproof plate can interfere with the operating end of the clamping mechanism.

6. A safe exhaust filter unit for bag inlet and bag out of dust removal equipment according to claim 1, characterized in that: A mounting column for installing a dust pipe assembly is vertically fixed at the connection between the box body and the air inlet unit body. The dust pipe assembly includes an air inlet pipe that passes through the box body and is connected to external equipment, and a dust pipe connected to the air inlet pipe. The dust pipe has four blowing heads.

7. A safe exhaust filter unit for bag inlet and outlet of dust removal equipment according to claim 1, characterized in that: The upstream detection mechanism is arranged behind the dust-generating pipe assembly on the air inlet path, and the downstream detection mechanism is installed on the box frame. The upstream detection mechanism includes an upstream detection joint installed on the box and an upstream detection tube connected to the upstream detection joint, and a plurality of detection holes are opened on the upstream detection tube. The downstream detection mechanism includes a downstream detection joint installed on the box, a screw, a screw fixing seat fixed on the inner walls of both sides of the box, a hollow detection column with a detection gap, a nut seat threadedly connected to the screw, a fixing plate fixed to the nut seat and also fixed to the detection column, and a downstream detection tube, the downstream detection tube is connected to the downstream detection joint, the screw passes through the box and the end passing through is connected to the handwheel, the detection column is connected and fixed to the fixing plate, the box frame has sliding grooves at the upper and lower ends, and the detection column has pulleys installed in the sliding grooves at the upper and lower ends of the detection column, a guide seat is provided on the fixing plates at the upper and lower ends of the nut seat, and a guide rod fixed to the screw fixing seat at both ends is passed through the guide seat, the nut seat is guided by the guide rod and moves parallel to the screw, and the detection column moves parallel to the nut seat through the pulley.

8. A safe exhaust filter unit for bag inlet and outlet of dust removal equipment according to claim 1, characterized in that: The clamping mechanism includes a clamping frame located in the box frame and slightly smaller than the box frame, several cam boxes fixed on the clamping frame, two rotating rods passing through the cam box, a handle fixed at one end of the rotating rod and located at the mounting edge, cams installed at both ends of the rotating rod and located in the cam box, and a compression spring column. The two rotating rods are installed on the box frame and one end of the rotating rod passes through the box to the mounting edge. There is a certain distance between the cam box and the box frame. The box frame has ribs at the four corners. The compression spring column is arranged between the rib and the clamping frame. There is a certain distance between the two rotating rods.

9. A safe exhaust filter unit for bag inlet and outlet of dust removal equipment according to claim 1, characterized in that: A differential pressure gauge is provided above the box body.

10. A safe exhaust filter unit for bag inlet and bag out of dust removal equipment according to claim 1, characterized in that: A handle is provided on the inspection door.

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