Micro-positive pressure gas-solid mixed small-dose feeding device for experiment
By designing a micro-positive pressure gas-solid mixing small-dose feeding device, and using a combination of a long auger, auger sleeve and airtight rubber plug, the problems of unstable feeding and leakage in the micro-positive pressure airflow experiment were solved, and continuous feeding and sealing effects were achieved.
Patent Information
- Application Number
- CN202423218126.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In existing laboratory micro-positive pressure gas fluidization scenarios, there is a lack of feeding devices capable of continuous feeding at the gram-level per minute, and there are problems with solid powder backflow and gas leakage.
Design a micro-positive pressure gas-solid mixing small-dose feeding device including a long auger, auger sleeve, fixed airtight rubber plug and solid powder receiving and feeding funnel. Through precise matching and sealing structure, independent control of gas and solid powder can be achieved to avoid gas leakage and material backflow.
It achieves stability and sealing of continuous feeding in micro-positive pressure airflow experiments, avoids gas leakage and solid powder backflow, and ensures the accuracy and controllability of feeding amount.
Smart Images
Figure CN223615925U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of feeding devices for laboratory fluidized tube experiments, and particularly relates to a feeding device for mixing and feeding micro-positive pressure experimental gas and powder raw materials. Background Technology
[0002] Currently, there are few solid powder feeding devices specifically designed for laboratory-scale micro-positive pressure gas fluidization scenarios, capable of continuous dosing at gram-per-minute rates. Common small-dose dosing equipment typically employs a dual-roller feeder with loss-in-weight weighing for metering control. However, this method is unsuitable for laboratory-scale fluidized tube furnaces and generates micro-positive pressure airflow, which can lead to solid powder backflow and gas leakage. Therefore, it is necessary to design a laboratory-scale micro-positive pressure gas-solid mixing small-dose dosing device that achieves continuous dosing of 1 gram per minute while avoiding solid powder backflow and gas leakage. Utility Model Content
[0003] The purpose of this invention is to provide a micro-positive pressure gas-solid mixing small-dose feeding device for experiments, so as to realize continuous feeding of powder raw materials in laboratory gas fluidized tubular furnaces, with a feeding rate of 1g / min.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a micro-positive pressure gas-solid mixing small-dose feeding device for experiments, comprising a long auger, an auger sleeve, a fixed airtight rubber plug, and a solid powder receiving and discharging funnel. The lower end of the solid powder receiving and discharging funnel is inserted into the rear end of the auger sleeve, the front end of the auger sleeve is the auger discharge port, the long auger is inserted into the auger sleeve, the long auger is provided with an auger drive end, the auger sleeve is inserted into the fixed airtight rubber plug, and the fixed airtight rubber plug is provided with an equal-diameter air pipe insertion port.
[0005] Preferably, the tolerance between the inner diameter of the long auger and the sleeve is less than or equal to 0.2 mm.
[0006] Preferably, the length of the auger outlet port is at least 10 cm longer than the length of the air pipe.
[0007] Compared with the prior art, the beneficial effect of this utility model is that it effectively solves the problems of gas-solid mixing, air leakage and material return, and large material discharge in the existing small feeder in the micro positive pressure airflow experimental scenario. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the overall structure of a micro-positive pressure gas-solid mixing small-dose feeding device for experimental use according to this utility model;
[0009] Figure 2 This is a schematic diagram of the structure of a long auger for an experimental micro-positive pressure gas-solid mixing small-dose feeding device according to the present invention;
[0010] Figure 3 This is a schematic diagram of the auger sleeve of an experimental micro-positive pressure gas-solid mixing small-dose feeding device according to the present invention;
[0011] Figure 4 This is a schematic diagram of the fixed airtight rubber stopper of a micro-positive pressure gas-solid mixing small-dose feeding device for experiments according to this utility model;
[0012] Figure 5 This is a schematic diagram of the solid powder receiving and feeding funnel of a micro-positive pressure gas-solid mixing small-dose feeding device for experimental use according to this utility model.
[0013] In the diagram: 1. Long auger; 101. Auger drive end; 102. Spiral blade; 2. Auger sleeve; 201. Insertion port of solid powder receiving and discharging funnel; 202. Auger discharge port; 3. Fixed airtight rubber plug; 301. Equal diameter insertion port of auger sleeve; 302. Equal diameter insertion port of air pipe; 4. Solid powder receiving and discharging funnel. Detailed Implementation
[0014] The purpose, technical solution, and advantages of this utility model will be more clearly explained below with reference to the accompanying drawings of the embodiments thereof. The design of the corresponding parameters, physical assembly, and usage process of the micro-positive pressure gas-solid mixing feeding device of this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this embodiment described and shown in the accompanying drawings can typically be designed and configured with different parameters.
[0015] Therefore, the detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claims, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0016] First embodiment:
[0017] See attached document Figures 1-5 An experimental micro-positive pressure gas-solid mixing small-dose feeding device includes a long auger 1, an auger sleeve 2, a fixed airtight rubber plug 3, and a solid powder receiving and discharging funnel 4. The lower end of the solid powder receiving and discharging funnel 4 is inserted into the solid powder receiving and discharging funnel insertion port 201 at the rear end of the auger sleeve 2. The front end of the auger sleeve 2 is the auger discharge port 202. One end of the long auger 1 with a spiral blade 102 is inserted into the auger sleeve 2. The long auger 1 is provided with an auger drive end 101. The auger sleeve is inserted into the auger sleeve equal diameter insertion port 301 of the fixed airtight rubber plug 3. The fixed airtight rubber plug 3 is provided with an air pipe equal diameter insertion port 302.
[0018] Preferably, the tolerance between the inner diameter of the long auger 1 and the auger sleeve 2 is less than or equal to 0.2 mm. This structure achieves airtightness by means of sealing and filling with solid powder, ensuring that gas will not leak and solid powder will not backflow during use.
[0019] Preferably, the length of the auger outlet port 202 is at least 10 cm longer than the length of the air pipe, which ensures that the gas control and the solid powder control are independent of each other and do not interfere with each other.
[0020] Preferably, the long auger 1 is 350mm long, the auger sleeve 2 is 300mm long, and the auger drive end 101 at the rear end of the long auger 1 is 50mm long. The diameter of the long auger 1 is 6mm, and the inner diameter of the auger sleeve 2 is 6.2mm. Except for the rubber stopper, which uses a standard No. 6 rubber stopper, all other parts are made of 3D printed black nylon material.
[0021] Second embodiment:
[0022] The difference between this embodiment and the first embodiment is that: the long auger 1 is 360mm long, the auger sleeve 2 is 305mm long, and the auger drive end 101 at the rear end of the long auger 1 is 55mm long. The diameter of the long auger 1 is 5mm, and the inner diameter of the auger sleeve 2 is 5.2mm. Except for the rubber stopper, which uses a standard No. 5 rubber stopper, all other parts are made of stainless steel.
[0023] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, any improvements and modifications made by those skilled in the art to the technical solutions of the present utility model shall fall within the protection scope defined by the claims of the present utility model.
Claims
1. A micro-positive pressure gas-solid mixing and small-dose feeding device for experiments, characterized in that, It includes a long auger, an auger sleeve, a fixed airtight rubber plug, and a solid powder receiving and discharging funnel. The lower end of the solid powder receiving and discharging funnel is inserted into the rear end of the auger sleeve. The front end of the auger sleeve is the auger discharge port. The long auger is inserted into the auger sleeve and has an auger drive end. The auger sleeve is inserted into the fixed airtight rubber plug and has an air pipe insertion port of equal diameter.
2. The experimental micro-positive pressure gas-solid mixing small-dose feeding device according to claim 1, characterized in that, The tolerance between the long auger and the inner diameter of the sleeve is less than or equal to 0.2 mm.
3. The experimental micro-positive pressure gas-solid mixing small-dose feeding device according to claim 1, characterized in that, The discharge port of the auger should be at least 10 centimeters longer than the length of the air pipe.