Hazardous waste homogenizing and mixing device
By combining bucket elevators, sealed gas collection hoods, and twin-shaft mixers, the problems of dust and odor escape during the homogenization and mixing of hazardous waste have been solved, improving the degree of homogenization and efficiency, saving space, and reducing production costs.
Patent Information
- Application Number
- CN202423225791.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The existing methods for homogenizing and mixing hazardous waste are outdated, resulting in severe dust pollution, the escape of irritating odors, poor homogenization, low efficiency, and large space requirements.
The device employs a combination of bucket elevator, sealed gas collection hood, twin-shaft mixer, buffer silo and discharge valve. The sealed gas collection hood collects dust and odors, the use of corrosion-resistant and wear-resistant materials extends the equipment's lifespan, and automated control is achieved.
It effectively controls dust and odor emission, improves homogenization and efficiency, saves site resources, enables continuous production, and reduces production costs.
Smart Images
Figure CN223760799U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of comprehensive recycling technology of hazardous waste, and specifically relates to a hazardous waste homogenization and mixing device. Background Technology
[0002] With the continuous updating and iteration of technology in the hazardous waste recycling industry, the types of hazardous waste that can be comprehensively recycled and utilized are increasing. Due to the characteristics of hazardous waste, such as wide sources, diverse types, complex composition, and different forms, it is necessary to homogenize, mix, and match various types of hazardous waste before comprehensive recycling and utilization in order to meet the production technology requirements.
[0003] The current homogenization and mixing method is relatively outdated. It requires multiple material turnings using engineering vehicles, which occupies a large area of space. The material turning and homogenization process generates serious dust and irritating odors, resulting in a harsh environment. At the same time, the homogenization degree is poor, the time consumption is long, and the efficiency is low. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a hazardous waste homogenization and mixing device to avoid the adverse environmental problems of dust and irritating odors escaping during homogenization and mixing, while improving the degree of homogenization and increasing the efficiency of homogenization and mixing.
[0005] This utility model solves the above problems through the following technical means:
[0006] A hazardous waste homogenization and mixing device includes a bucket elevator, a sealed gas collection hood, a twin-shaft mixer, a buffer silo, and a discharge valve. The sealed gas collection hood is located at the inlet of the twin-shaft mixer, the buffer silo is located at the outlet of the twin-shaft mixer, and the discharge valve is located at the outlet of the buffer silo. The sealed gas collection hood has a side inlet, a top inlet, and an annular inlet, and a sliding door is provided at the side inlet. The bucket elevator includes a bucket, a bucket slide rail, and a bucket traction mechanism. The side wall of the bucket is slidably assembled with the bucket slide rail via a sliding member. The bucket slide rail includes a lifting section and a discharge curved rail section, the discharge curved rail section corresponding to the position of the side inlet. The bucket traction mechanism is connected to the bottom of the bucket, and the sliding door is provided with an actuating rod that is pushed open by the bucket traction mechanism.
[0007] During the aforementioned hopper lifting process, the hopper traction mechanism first lifts the hopper, causing it to move along the lifting section. When the hopper moves to the unloading curved track section, one side of the hopper moves along the unloading curved track section, and the bottom of the hopper continues to lift. In this way, the hopper can be gradually tilted. During this process, the hopper traction mechanism simultaneously pushes the actuating rod and the sliding door upward, opening the side feed port and thus pouring the material in the hopper into the sealed gas collection hood. After unloading is completed, the hopper traction mechanism drives the hopper to move in the opposite direction, and the sliding door automatically closes under the action of gravity.
[0008] Furthermore, the hopper traction mechanism includes a winch, a wire rope, and a traction frame. One end of the wire rope is wound around the winch, and the other end is connected to the traction frame, which is hinged to the bottom of the hopper. Thus, the traction frame can be used to move the actuating lever and the sliding door.
[0009] Furthermore, it also includes an exhaust device connected to the ring-shaped gas collection port. In this way, the generated dust and irritating odors are extracted and treated by the exhaust device, creating a slight negative pressure inside the sealed gas collection hood, effectively controlling the escape of irritating odors.
[0010] Furthermore, the part of the twin-shaft mixer that comes into contact with the material is provided with a layer of corrosion-resistant and wear-resistant material.
[0011] Furthermore, the material of the anti-corrosion and wear-resistant material layer is wear-resistant cast iron Cr12 and PE.
[0012] Corrosion-resistant and wear-resistant materials can prevent corrosion and wear on the surfaces in contact with materials, thus extending their service life.
[0013] Furthermore, the hopper has a volume greater than 5 cubic meters and an opening width greater than 2500 mm, facilitating one-time feeding using an engineering vehicle.
[0014] Furthermore, the twin-shaft mixer has a volume greater than 9 cubic meters, and the outlet size of the buffer silo is 600mm × 1000mm. This satisfies certain homogenization and mixing requirements and material buffering capacity, enabling continuous production.
[0015] A method for homogenizing and mixing hazardous waste using the above-mentioned apparatus includes the following steps:
[0016] S1: After being metered, liquid hazardous waste and powdered hazardous waste are lifted by the bucket elevator and added to the twin-shaft mixer through the side feed port of the sealed gas collection hood;
[0017] S2: After solid hazardous waste and auxiliary materials are metered, they are added to the twin-shaft mixer through the top inlet of the sealed gas collection hood;
[0018] S3: The hazardous waste added in S1 and S2 is thoroughly mixed and homogenized in the twin-shaft mixer, and after passing the test, it is discharged into the buffer silo through the outlet of the twin-shaft mixer.
[0019] S4: The material that has fallen into the buffer silo is then continuously fed to the next process through the discharge valve.
[0020] The liquid hazardous waste includes organic solvents, waste mineral oil, etc., and the powdered hazardous waste includes fly ash, flue ash, etc.
[0021] The solid hazardous wastes include electroplating sludge, incineration residues, distillation residues, etc., and the auxiliary materials include powdered limestone, powdered quartz, granular coal, etc.
[0022] The discharge port of the aforementioned twin-shaft mixer is designed with a hydraulic unloading gate, which can be automatically controlled.
[0023] The mixing time of the twin-shaft mixer is controllable depending on the dryness or wetness of the material being mixed.
[0024] The beneficial effects of this utility model are:
[0025] (1) It can realize the homogenization and mixing of various hazardous wastes, which fundamentally changes the homogenization and mixing operation mode, improves production efficiency, reduces production costs, and has considerable economic benefits;
[0026] (2) The entire device occupies a small area, saving site resources;
[0027] (3) The dust and irritating odor generated during the homogenization and mixing process are effectively collected and treated, which greatly improves the working environment and has significant environmental benefits;
[0028] (4) High degree of homogenization, short mixing time, and can achieve automated control.
[0029] (5) The sliding door of the sealed gas collection hood opens and closes automatically during the feeding process, which maximizes the sealing of the feeding process. Attached Figure Description
[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0031] Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the present invention;
[0032] Figure 2 This is a schematic diagram of a bucket elevator. Detailed Implementation
[0033] The present invention will now be described in detail with reference to the accompanying drawings.
[0034] like Figures 1 to 2As shown, this embodiment discloses a hazardous waste homogenization and mixing device, including a bucket elevator, a sealed gas collection hood 6, a twin-shaft mixer 7, a buffer silo 8, and a discharge valve 9. The sealed gas collection hood is located at the inlet of the twin-shaft mixer, the buffer silo is located at the outlet of the twin-shaft mixer, and the discharge valve is located at the outlet of the buffer silo. In this embodiment, the discharge valve is a bar valve. The sealed gas collection hood is provided with a side inlet 5, a top inlet 10, and an annular inlet 11. A sliding door 13 is provided at the side feed inlet; the bucket elevator includes a bucket 4, a bucket slide rail and a bucket traction mechanism. The side wall of the bucket is slidably assembled with the bucket slide rail via a sliding member 3. The bucket slide rail includes a lifting section 1 and a discharge curved rail section 2. The discharge curved rail section corresponds to the position of the side feed inlet. The bucket traction mechanism is connected to the bottom of the bucket. The sliding door is provided with a lever 12 that is pushed open by the bucket traction mechanism.
[0035] During the aforementioned hopper lifting process, the hopper traction mechanism first lifts the hopper, causing it to move along the lifting section. When the hopper moves to the unloading curved track section, one side of the hopper moves along the unloading curved track section, and the bottom of the hopper continues to lift. In this way, the hopper can be gradually tilted. During this process, the hopper traction mechanism simultaneously pushes the actuating rod and the sliding door upward, opening the side feed port and thus pouring the material in the hopper into the sealed gas collection hood. After unloading is completed, the hopper traction mechanism drives the hopper to move in the opposite direction, and the sliding door automatically closes under the action of gravity.
[0036] The hopper traction mechanism includes a winch 16, a wire rope 14, and a traction frame 15. One end of the wire rope is wound around the winch, and the other end is connected to the traction frame, which is hinged to the bottom of the hopper. Thus, the traction frame can be used to move the actuating lever and the sliding door.
[0037] It also includes an exhaust device connected to the ring-shaped gas collection port. In this way, the generated dust and irritating odors are extracted and treated by the exhaust device, creating a slight negative pressure inside the sealed gas collection hood, effectively controlling the escape of irritating odors.
[0038] The part of the twin-shaft mixer that comes into contact with the material is provided with a layer of corrosion-resistant and wear-resistant material.
[0039] The anti-corrosion and wear-resistant material layer is made of wear-resistant cast iron Cr12 and PE.
[0040] Corrosion-resistant and wear-resistant materials can prevent corrosion and wear on the surfaces in contact with materials, thus extending their service life.
[0041] The hopper has a volume greater than 5 cubic meters and an opening width greater than 2500 mm, facilitating one-time feeding using engineering vehicles.
[0042] The twin-shaft mixer has a volume greater than 9 cubic meters, and the outlet size of the buffer silo is 600mm × 1000mm. This ensures sufficient homogenization and material buffering capacity for continuous production.
[0043] A method for homogenizing and mixing hazardous waste using the above-mentioned apparatus includes the following steps:
[0044] S1: Liquid hazardous waste and powdered hazardous waste are weighed and measured in a ratio of 1:3, then lifted by the bucket elevator and added to the twin-shaft mixer through the side feed port of the sealed gas collection hood.
[0045] S2: Solid hazardous waste and auxiliary materials are weighed and measured in a ratio of 5.9:0.1 and then added to the twin-shaft mixer through the top feed inlet of the sealed gas collection hood;
[0046] S3: The hazardous waste added in S1 and S2 is thoroughly mixed and homogenized in the twin-shaft mixer, and after passing the test, it is discharged into the buffer silo through the outlet of the twin-shaft mixer.
[0047] S4: The material that has fallen into the buffer silo is then continuously fed to the next process through the discharge valve.
[0048] The liquid hazardous waste includes organic solvents, waste mineral oil, etc., and the powdered hazardous waste includes fly ash, flue ash, etc.
[0049] The solid hazardous wastes include electroplating sludge, incineration residues, distillation residues, etc., and the auxiliary materials include powdered limestone, powdered quartz, granular coal, etc.
[0050] The discharge port of the aforementioned twin-shaft mixer is designed with a hydraulic unloading gate, which can be automatically controlled.
[0051] The mixing time of the twin-shaft mixer is controllable depending on the dryness or wetness of the material being mixed.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A hazardous waste homogenization mixing apparatus, characterized by: The application relates to a double-shaft mixer, which comprises a bucket elevator, a sealed gas collecting cover, a double-shaft mixer, a buffer bin and a discharge valve, the sealed gas collecting cover is arranged at the feeding port of the double-shaft mixer, the buffer bin is arranged at the discharging port of the double-shaft mixer, and the discharge valve is arranged at the discharging port of the buffer bin; the sealed gas collecting cover is provided with a lateral feeding port, a top feeding port and a ring collecting port, and a sliding door is arranged at the lateral feeding port; the bucket elevator comprises a hopper, a hopper sliding rail and a hopper traction mechanism, the sidewall of the hopper is slidably assembled with the hopper sliding rail through a sliding piece, the hopper sliding rail comprises a lifting section and a discharging curved rail section, the discharging curved rail section corresponds to the position of the lateral feeding port, the hopper traction mechanism is connected with the bottom of the hopper, and a poking rod for pushing the sliding door to open through the hopper traction mechanism is arranged on the sliding door.
2. The hazardous waste homogenizing mixing device of claim 1, wherein: The hopper traction mechanism comprises a winch, a steel wire rope and a traction frame, one end of the steel wire rope is wound on the winch, the other end is connected with the traction frame, and the traction frame is hinged with the bottom of the hopper.
3. The hazardous waste homogenizing mixing device of claim 2, wherein: The double-shaft mixer is further provided with an exhaust device connected with the ring collecting port.
4. The hazardous waste homogenizing mixing device of claim 3, wherein: The part of the double-shaft mixer in contact with the material is provided with a layer of anticorrosive and wear-resistant material.
5. The hazardous waste homogenizing mixing device of claim 4, wherein: The volume of the hopper is greater than 5 cubic meters, and the opening width of the hopper is greater than 2500 mm.
6. The hazardous waste homogenizing mixing device of claim 5, wherein: The volume of the double-shaft mixer is greater than 9 cubic meters, and the size of the discharging port of the buffer bin is 600 mm*1000 mm.