Ventilation cabinet for collecting ammonium salt residues

Abstract

The invention belongs to the technical field of ammonium salt residue fume cupboards, solves the problem that a conventional fume cupboard needs to manually filter, collect, load and discharge ammonium salt residues, and discloses a fume cupboard for collecting ammonium salt residues. Comprising a centrifugal machine rack, a ventilation cabinet body, a centrifugal machine electric cabinet, a scraper type centrifugal machine, a conveying mechanism lifting frame and a charging tray conveying mechanism, the centrifugal machine rack is connected with the ventilation cabinet body and used for exhausting air in the ammonium salt residue collecting process, and the centrifugal machine electric cabinet is installed on the ventilation cabinet body; a scraper type centrifugal machine is installed above the centrifugal machine rack and used for filtering solid particles in slurry to form ammonium salt slag filter cakes, a conveying mechanism lifting frame and a material disc conveying mechanism are arranged in the centrifugal machine rack, and the height of the material disc conveying mechanism is changed through the conveying mechanism lifting frame so as to convey a material disc. According to the automatic ammonium salt residue discharging device, ammonium salt residues can be automatically filtered, collected, loaded into trays and discharged, and safe and efficient continuous operation is achieved through automatic control of the scraper type centrifugal machine and the automatic discharging device.

Description

Technical Field

[0001] This application belongs to the technical field of ammonium salt slag fume hoods, and particularly relates to a fume hood for collecting ammonium salt slag. Background Technology

[0002] In chemical production processes, the separation and collection of ammonium salt residue typically involves filtering solid particles from the slurry using a centrifuge to form a filter cake. However, this process often involves the release of harmful gases or dust, posing a threat to the health of operators and environmental safety.

[0003] Fume hoods are commonly used equipment in chemical production to exhaust harmful gases and dust, protecting the safety of production personnel. Traditional fume hoods have a single function, typically only used for ventilation and exhaust, and cannot meet the demands of modern chemical production for multi-functional and automated operation. Especially when frequent tray changes are required, traditional fume hoods have low operating efficiency and are prone to cross-contamination. Summary of the Invention

[0004] The purpose of this application is to provide a fume hood for collecting ammonium salt slag, which solves the problem that conventional fume hoods require manual operation for filtering, collecting, loading, and discharging ammonium salt slag. This fume hood can realize automatic filtering, collecting, loading, discharging, and continuous operation of ammonium salt slag.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A fume hood for collecting ammonium salt residue includes a centrifuge frame, a fume hood body, a centrifuge electrical control box, a scraper centrifuge, a conveying mechanism lifting frame, and a tray conveying mechanism. The centrifuge frame is connected to the fume hood body for exhaust during the ammonium salt residue collection process. The centrifuge electrical control box is installed on the fume hood body. The scraper centrifuge is installed above the centrifuge frame for filtering solid particles in the slurry to form an ammonium salt residue filter cake. The conveying mechanism lifting frame and the tray conveying mechanism are arranged inside the centrifuge frame. The height of the tray conveying mechanism is changed by the conveying mechanism lifting frame to transfer the tray.

[0007] In some embodiments, the centrifuge frame has centrifuge frame legs, centrifuge frame panel, centrifuge frame chassis and straight pipe, the centrifuge frame panel is installed above the centrifuge frame legs, the straight pipe is installed through the centrifuge frame panel, and the centrifuge frame panel is located below the centrifuge frame.

[0008] In some embodiments, the straight pipe is fixedly connected by a clamp, and the centrifuge funnel opening is sealed to prevent the diffusion of aerosols and ensure the safety of the production process.

[0009] In some embodiments, the centrifuge frame has a centrifuge frame door and a centrifuge sealing door. The centrifuge sealing door has a discharge door track base, a flange guide wheel track, a rodless cylinder, a push door cylinder connecting plate, a sealing door push door, and guide wheels. The flange guide wheel track is installed on the discharge door track base and connected to the rodless cylinder. The rodless cylinder is connected to the sealing door push door through the push door cylinder connecting plate. The sealing door push door slides on the flange guide wheel track through the guide wheels.

[0010] In some embodiments, the centrifuge rack door is closed by a latch.

[0011] In some embodiments, the fume hood includes a lower viewing window, a upper viewing window, a lighting fixture, and an exhaust port. The lower and upper viewing windows are sealed by a manually operated left-hand hinge. The lighting fixture and the exhaust port are mounted on the top of the fume hood.

[0012] In some embodiments, the ventilation cabinet is provided with a ventilation cabinet shelf support, a shelf reinforcement support and a shelf moving support inside, and the bottom of the ventilation cabinet is provided with a heavy-duty foot cup.

[0013] In some embodiments, the conveying mechanism lifting frame includes a flange-type guide shaft mounting plate, a guide shaft, a lifting plate, a rotating shaft, a worm gear screw jack, and a handwheel. The guide shaft is mounted above the flange-type guide shaft mounting plate, the lifting plate is mounted on the guide shaft, and the worm gear screw jack connected to the rotating shaft is mounted below the lifting plate and controlled by the handwheel.

[0014] In some embodiments, the tray conveying mechanism includes a conveying mechanism roller belt guard, a conveying mechanism roller guard, a conveying mechanism mounting bracket, a through-beam photoelectric switch guard, an electric roller, a driven roller, a proximity sensor, and a wedge belt. The conveying mechanism roller belt guard and the conveying mechanism roller guard are installed on the outside of the conveying mechanism mounting bracket. The through-beam photoelectric switch guard is installed above the conveying mechanism roller guard. The electric roller and the driven roller are installed between the two conveying mechanism mounting brackets. The electric roller is driven by the wedge belt. The proximity sensor is installed on both the front and rear sides of the tray conveying mechanism for tray entry detection and positioning detection.

[0015] In some embodiments, a photoelectric sensor mounting plate is installed above the electric roller and the driven roller, and a through-beam photoelectric sensor is installed on the photoelectric sensor mounting plate to detect fullness of the material tray.

[0016] Compared with the prior art, the fume hood for collecting ammonium salt slag provided in this application has the following advantages:

[0017] This application enables automatic filtration, collection, tray loading, and discharge of ammonium salt residue. Through automated control of a scraper centrifuge and automatic discharge device, safe and efficient continuous operation is achieved. This fume hood can achieve automatic filtration, collection, tray loading, discharge, and continuous operation of ammonium salt residue through automated control.

[0018] This application has the functions of temporary storage trays and tools, and can automatically connect to the tray conveying device, integrating automatic collection, tray position detection, full hopper detection, and automatic discharge functions.

[0019] This application uses a scraper centrifuge and a full-bin detection module to achieve automatic filtration and collection of ammonium salt residue. Rollers and pneumatically sealed doors are used to transport the material trays. The filtration and collection process of ammonium salt residue can be carried out automatically in a closed environment without human intervention. This effectively solves the problem that existing fume hoods require frequent manual operation when collecting ammonium salt residue and avoids cross-contamination caused by the lack of sealing of the fume hood.

[0020] Furthermore, this application employs an intelligent control system combined with a scraper centrifuge, an automatic discharge device, and other equipment to achieve automatic control of the entire fume hood. It automatically opens the pneumatically sealed door, detects the entry and positioning of the material tray through a position detection module, and automatically positions the material tray. It then starts the scraper centrifuge, automatically stops the machine when the material tray is full, and then automatically discharges the material, thus shortening the operation time and improving production efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the technical description will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the overall structure of the fume hood for collecting ammonium salt residue provided in this application;

[0023] Figure 2 A cross-sectional schematic diagram of the fume hood for collecting ammonium salt residue provided in this application;

[0024] Figure 3 This is a schematic diagram of the centrifuge frame structure provided in this application;

[0025] Figure 4 This is a schematic diagram of the centrifuge sealing door structure provided in this application;

[0026] Figure 5 This is a schematic diagram of the fume hood structure provided in this application;

[0027] Figure 6 This is a schematic cross-sectional view of the fume hood structure provided in this application;

[0028] Figure 7A schematic diagram of the lifting frame structure of the conveying mechanism provided in this application;

[0029] Figure 8 This is a schematic diagram of the material tray conveying mechanism provided in this application;

[0030] Figure 9 This is a cross-sectional schematic diagram of the material tray conveying mechanism provided in this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Centrifuge frame; 11. Centrifuge frame support legs; 12. Centrifuge frame panel; 13. Clamps; 14. Centrifuge frame chassis; 15. Centrifuge frame door; 16. Centrifuge sealing door; 161. Discharge door track base; 162. Flange guide wheel track; 163. Rodless cylinder; 164. Door push cylinder connecting plate; 165. Sealing door push door; 166. Guide wheel; 17. Centrifuge funnel mouth sealing edge; 18. Fastener; 19. Straight pipe;

[0033] 2. Fume hood; 21. Lower viewing window of fume hood; 22. Upper viewing window of fume hood; 23. Heavy-duty feet; 24. Fume hood lighting; 25. Exhaust air inlet; 26. Manual left-hand rotating plate latch; 27. Shelf support of fume hood; 28. Shelf reinforcement support; 29. ​​Shelf movable support;

[0034] 3. Centrifuge electrical control box;

[0035] 4. Scraper centrifuge;

[0036] 5. Conveying mechanism lifting frame; 51. Flange-type guide shaft mounting plate; 52. Guide shaft; 53. Lifting plate; 54. Rotary shaft; 55. Worm gear screw jack; 56. Handwheel;

[0037] 6. Material tray conveying mechanism; 61. Conveying mechanism roller belt guard; 62. Conveying mechanism roller guard; 63. Conveying mechanism mounting bracket; 64. Through-beam photoelectric switch guard; 65. Electric roller; 66. Driven roller; 67. Proximity sensor; 68. Wedge belt; 69. Photoelectric sensor mounting plate; 610. Through-beam photoelectric sensor. Detailed Implementation

[0038] The following detailed description provides further details on specific implementation methods.

[0039] like Figures 1 to 9 As shown, this application provides a fume hood for collecting ammonium salt slag, including a centrifuge frame 1, a fume hood body 2, a centrifuge electrical control box 3, a scraper centrifuge 4, a conveying mechanism lifting frame 5, and a material tray conveying mechanism 6.

[0040] Centrifuge frame 1 is connected to fume hood 2 for ventilation during the ammonium salt residue collection process. Centrifuge control box 3 is mounted on fume hood 2, and scraper centrifuge 4 is mounted above centrifuge frame 1, which can be used to filter solid particles in the slurry to form ammonium salt residue filter cake. Conveying mechanism lifting frame 5 and material tray conveying mechanism 6 are installed inside centrifuge frame 1.

[0041] like Figure 3 and Figure 4 As shown, the centrifuge frame 1 includes centrifuge frame legs 11, centrifuge frame panel 12, clamps 13, centrifuge frame chassis 14, centrifuge frame door 15, centrifuge sealing door 16, buckle 18, and straight pipe 19.

[0042] The centrifuge frame has four support legs 11, which are fixedly connected by a lower crossbeam for securing the centrifuge frame. A centrifuge frame panel 12 and clamps 13 are mounted on top of the centrifuge frame 1, and a scraper centrifuge 4 is installed on top of it. A centrifuge frame chassis 14 is located below the centrifuge frame 1, and a conveyor lifting frame 5 and a tray conveying mechanism 6 are mounted on the chassis 14. The conveyor lifting frame 5 can adjust the height of the tray conveying mechanism 6 to facilitate automatic tray transfer.

[0043] The centrifuge frame 1 is equipped with a centrifuge frame door 15 and a centrifuge sealing door 16. The centrifuge frame door 15 is used to operate the lifting frame 5 of the conveying mechanism, and the centrifuge sealing door 16 is used for the automatic discharge of ammonium salt residue. The centrifuge frame door 15 and the centrifuge sealing door 16 are arranged opposite each other, for example, as... Figure 3 As shown, the centrifuge frame door 15 is located on the front side, and the centrifuge sealing door 16 is located on the rear side.

[0044] The centrifuge frame door 15 is equipped with a latch 18, which is normally closed to create a sealed environment. It can be opened when the conveyor mechanism lifting frame 5 needs to be operated. The centrifuge frame door 15 is closed by the latch 18, which connects the centrifuge frame door 15 and the centrifuge frame support legs 11.

[0045] A straight pipe 19 is installed above and through the centrifuge frame panel 12. The scraper centrifuge 4 conveys ammonium salt residue to the material tray on the conveying mechanism 6 through the straight pipe 19. The straight pipe 19 is fixedly connected by a clamp 13. The centrifuge funnel mouth seal 17 is installed above the centrifuge frame 1 at the position connected to the scraper centrifuge 4 to prevent the diffusion of aerosols and ensure the safety of the production process.

[0046] like Figure 4 As shown, the centrifuge sealing door 16 includes a discharge door track base 161, a flange guide wheel track 162, a rodless cylinder 163, a door push cylinder connecting plate 164, a sealing door push door 165, and a guide wheel 166.

[0047] The centrifuge sealing door 16 is connected to the centrifuge frame 1 via the discharge door track base 161. A flange guide wheel track 162 is installed on the other side of the discharge door track base 161. The centrifuge sealing door 16 is connected to a rodless cylinder 163, which is connected to the sealing door push door 165 via a push door cylinder connecting plate 164, enabling pneumatic switching control of the sealing door push door 165. The sealing door push door 165 slides on the flange guide wheel track 162 via guide wheels 166. The rodless cylinder 163 pushes the push door cylinder connecting plate 164, thereby pushing the sealing door push door 165 to move on the flange guide wheel track 162 via the guide wheels 166.

[0048] like Figure 5 and Figure 6 As shown, the fume hood 2 includes a lower viewing window 21, an upper viewing window 22, a heavy-duty foot cup 23, a fume hood light 24, an exhaust port 25, a manual left-hand rotating plate buckle 26, a fume hood shelf support 27, a shelf reinforcement support 28, and a shelf moving support 29.

[0049] The ventilation cabinet 2 has four ventilation cabinet doors, namely the lower viewing window door 21 and the upper viewing window door 22. The ventilation cabinet 2 is placed on the ground by heavy-duty feet 23 to ensure that the ventilation cabinet 2 is placed horizontally.

[0050] The top of the fume hood 2 is equipped with a fume hood light 24, which allows operators to observe the specific situation inside the fume hood through the lower viewing window 21 and the lower viewing window 22. The other end of the top is equipped with an exhaust port 25, which can be connected to the exhaust system to effectively remove harmful gases and dust, and protect the health and safety of the operators.

[0051] The four doors of the fume hood 2 are sealed by a manual left-hand rotating latch 26. The doors can be opened by rotating the latch 26 when needed. Opening the doors of the fume hood 2 reveals its interior, which includes shelf supports 27, reinforcing supports 28, and movable shelves 29. The shelf supports 27 and reinforcing supports 28 are fixed to the fume hood 2, while the movable shelves 29 are movable supports that can be placed on the shelf supports 27 and reinforcing supports 28. The movable shelves 29 can be moved to change the space above the shelves as needed, facilitating the storage of various tools, including trays.

[0052] like Figure 7 As shown, the conveying mechanism lifting frame 5 includes a flange-type guide shaft mounting plate 51, a guide shaft 52, a lifting plate 53, a rotating shaft 54, a worm gear screw jack 55, and a handwheel 56.

[0053] A guide shaft 52 is mounted above the flange-type guide shaft mounting plate 51, and a lifting plate 53 for lifting is mounted on the guide shaft 52. Below the lifting plate 53 is a worm gear screw jack 55 connected to a rotating shaft 54, which can be controlled by a handwheel 56. The conveying mechanism lifting frame 5 can move longitudinally to adapt to different ammonium salt slag receiving devices. The height of the lifting plate 53 is controlled by the handwheel 56 to ensure that the material tray is aligned with the height of the receiving device, facilitating automated transportation. Manual control can more precisely ensure that the heights of both are aligned, and no further operation is required if the production process remains unchanged.

[0054] Preferably, the handwheel 56 is made of stainless steel.

[0055] like Figure 8 and Figure 9 As shown, the material tray conveying mechanism 6 includes a conveying mechanism roller belt cover 61, a conveying mechanism roller cover 62, a conveying mechanism mounting bracket 63, a photoelectric switch cover 64, an electric roller 65, a driven roller 66, a proximity sensor 67, a wedge belt 68, and a photoelectric sensor mounting plate 69.

[0056] By setting up conveyor roller belt guards 61 and 62, foreign objects are prevented from entering, protecting the equipment from external damage and ensuring the safe and stable operation of the conveying system. The material tray conveying mechanism 6 is mounted on the lifting plate 53 via a conveyor mounting bracket 63. The side of the conveyor roller belt guards 61 and 62 facing the electric roller 65 is a photoelectric switch guard 64, which can maintain the installation accuracy of the photoelectric switch and ensure its long-term effective operation. The electric roller 65 and the driven roller 66 are installed in the middle of the conveyor mounting bracket 63 for the transfer of the material tray.

[0057] The material tray conveying mechanism 6 is equipped with a proximity sensor 67 on each of its front and rear sides for detecting the entry and arrival of the material tray. When the material tray approaches the entry end proximity sensor 67, the electric roller 65 is automatically controlled to roll to convey the material tray. When the material tray approaches the far end proximity sensor, an arrival signal is generated, which interlocks and stops the movement of the electric roller 64. The electric roller 64 is driven by the wedge belt 68.

[0058] A photoelectric sensor mounting plate 69 is installed above the roller, equipped with six through-beam photoelectric sensors 610 for full tray detection. When the scraper centrifuge 4 is running, ammonium salt residue falls into the tray from the straight pipe 19. However, after the ammonium salt residue accumulates, it hinders the conduction of the through-beam photoelectric sensors 610. When the number of through-beam photoelectric sensors 610 that are obstructing the flow exceeds two, the system interlocks and shuts down the scraper centrifuge 4. After standing for a period of time, the centrifuge sealing door 16 can be opened and the tray conveying mechanism 6 can be started to convey the ammonium salt residue filled with the tray to the next process.

[0059] Preferably, the electric roller 65 is a stainless steel electric roller.

[0060] Preferably, the driven roller 66 is a stainless steel driven roller.

[0061] The above description is only a specific embodiment of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A fume hood for ammonium salt slag collection, characterized by, The centrifuge frame (1) is connected with the fume hood body (2) for exhaust during ammonium salt slag collection process, the fume hood body (2) is provided with the centrifuge electric control box (3), the centrifuge frame (1) is provided with the scraper type centrifuge (4) above for filtering solid particles in slurry to form ammonium salt slag filter cake, the centrifuge frame (1) is internally provided with the conveying mechanism lifting frame (5) and the tray conveying mechanism (6), and the height of the tray conveying mechanism (6) is changed through the conveying mechanism lifting frame (5) to convey the tray.

2. The fume hood for ammonium salt sludge collection according to claim 1, characterized in that, The centrifuge frame (1) is provided with centrifuge frame legs (11), a centrifuge frame panel (12), a centrifuge frame bottom plate (14) and a straight-through pipe (19), the centrifuge frame panel (12) is arranged above the centrifuge frame legs (11), the straight-through pipe (19) is arranged through the centrifuge frame panel (12), and the centrifuge frame panel (12) is arranged below the centrifuge frame (1).

3. The fume hood for ammonium salt sludge collection according to claim 2, characterized in that, The straight-through pipe (19) is fixedly connected through a hoop (13), and the centrifuge funnel mouth sealing edge (17) is used for preventing aerosol diffusion.

4. The fume hood for ammonium salt sludge collection according to claim 1, characterized in that, The centrifuge frame (1) is provided with a centrifuge frame door (15) and a centrifuge sealing door (16), the centrifuge sealing door (16) is provided with a discharge door rail base (161), a flange guide wheel rail (162), a rodless air cylinder (163), a door pushing cylinder connecting plate (164), a sealing door pushing door (165) and a guide wheel (166), the flange guide wheel rail (162) is arranged on the discharge door rail base (161) and connected with the rodless air cylinder (163), the rodless air cylinder (163) is connected with the sealing door pushing door (165) through the door pushing cylinder connecting plate (164), and the sealing door pushing door (165) slides on the flange guide wheel rail (162) through the guide wheel (166).

5. The fume hood for ammonium salt sludge collection according to claim 4, characterized in that, The centrifuge frame door (15) is closed through a buckle (18).

6. The fume hood for ammonium salt sludge collection according to claim 1, wherein The fume hood body (2) is provided with a fume hood body lower window door (21), a fume hood body upper window door (22), a fume hood lighting lamp (24) and an exhaust interface (25), the fume hood body lower window door (21) and the fume hood body upper window door (22) are sealed through a left-handed plate buckle (26), and the fume hood lighting lamp (24) and the exhaust interface (25) are arranged on the top of the fume hood body (2).

7. The fume hood for ammonium salt sludge collection according to claim 6, characterized in that, The fume hood body (2) is internally provided with a fume hood body layer plate support (27), a layer plate reinforcing support (28) and a layer plate moving support (29), and the bottom of the fume hood body (2) is provided with a heavy load foot cup (23).

8. The fume hood for ammonium salt sludge collection according to claim 1, wherein The conveying mechanism lifting frame (5) comprises a flange type guide shaft mounting plate (51), a guide shaft (52), a lifting plate (53), a rotating shaft (54), a worm screw lifting machine (55) and a hand wheel (56), the guide shaft (52) is installed above the flange type guide shaft mounting plate (51), the lifting plate (53) is installed on the guide shaft (52), the worm screw lifting machine (55) connected with the rotating shaft (54) is installed below the lifting plate (53), and the worm screw lifting machine (55) is controlled through the hand wheel (56).

9. The fume hood for ammonium salt sludge collection according to claim 1, wherein The tray conveying mechanism (6) comprises a conveying mechanism roller belt cover (61), a conveying mechanism roller cover (62), a conveying mechanism mounting support (63), a light barrier photoelectric switch cover (64), a motor roller (65), a driven roller (66), a proximity sensor (67) and a V-belt (68), the conveying mechanism roller belt cover (61) and the conveying mechanism roller cover (62) are installed outside the conveying mechanism mounting support (63), the light barrier photoelectric switch cover (64) is installed above the conveying mechanism roller cover (62), the motor roller (65) and the driven roller (66) are installed between the two conveying mechanism mounting supports (63), the motor roller (65) is driven through the V-belt (68), and the proximity sensor (67) is installed on the front and back sides of the tray conveying mechanism (6) for tray entering detection and in-place detection.

10. The fume hood for ammonium salt sludge collection according to claim 9, characterized in that, The motor roller (65) and the driven roller (66) are provided with a photoelectric sensor mounting plate (69) above, and a light barrier photoelectric sensor (610) is installed on the photoelectric sensor mounting plate (69) for full tray detection.

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