Material blending, switching and conveying system
By designing a material allocation switching conveying system, including hoppers, valves and clearing mechanisms, the problem of coal transportation and cleaning of thermal power plants during peak shaving is solved, and the system is efficient, stable operation and cost reduction is achieved.
Patent Information
- Application Number
- CN202420318277.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-02-20
AI Technical Summary
During the peak shaving process of thermal power plants, it is difficult to efficiently and stably transport and clean coal materials, especially when the load changes, the material dirt and blockage problems are difficult to solve.
A material distribution and switching conveying system is designed, including the first hopper, the second hopper, the three-way joint, the valve, the material distribution conveying mechanism and the cleaning mechanism. By driving the motor, the gear plate and the cleaning scraper are realized to realize the inner wall of the hopper. Material cleaning and flexible switching of conveying systems.
It realizes rapid and stable switching of the conveying system during peak shaving in the thermal power plant, ensuring efficient supply of coal and cleaning in the hopper, and reducing the system installation and operation costs.
Smart Images
Figure CN222273487U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material allocation switching and conveying, in particular to a material allocation switching and conveying system. Background Art
[0002] The peak-shaving capacity of thermal power units mainly depends on their adaptability to high and low loads, and their peak-shaving amplitude is defined as the ratio of the minimum output to the maximum output of the unit. Deep peak-shaving is a mode of operation in which the output of each thermal power plant is reduced due to the large difference in peak and valley load of the power grid, and the generator sets exceed the basic peak-shaving range for peak-shaving. Generally, the load rate of deep peak-shaving is 40% to 30%. Within the specified time, the thermal power unit can safely, smoothly and efficiently increase and decrease the load. The lower the load, the stronger the deep peak-shaving capacity of the unit.
[0003] Thermal power plants often need to carry out peak regulation. When the power demand is very low, only a few specific units are needed to generate electricity, and only a small amount of high-quality coal is needed. High-quality coal burns very hard and is difficult to extinguish. When the power demand is very, very high, all the units need to be turned on. Utility Model Content
[0004] The utility model aims to overcome the shortcomings of the prior art and provide a material mixing, switching and conveying system which is easy to install and has stable operation.
[0005] The utility model is implemented as follows: a material mixing, switching and conveying system comprises a first hopper and a second hopper, wherein a three-way joint is connected below the first hopper, a first discharge port of the three-way joint is connected to a first feeding mechanism via a first valve, a second discharge port of the three-way joint is connected to a material dividing and feeding mechanism via a material dividing valve, and the material dividing and feeding mechanism is connected to the second feeding mechanism via a connecting pipe.
[0006] The material allocation switching and conveying system also includes a clearing mechanism, which can be started regularly to clear the stuck materials at the discharge port, and a clearing scraper with a suitable length can be used to meet the needs of different hoppers.
[0007] The clearing mechanism includes a shell arranged on the hopper, the shell is provided with a center hole matching the feeding port of the hopper, a toothed disc rotatably connected thereto is arranged inside the shell, a driving mechanism for driving the toothed disc to rotate is arranged on the shell, and a clearing scraper is arranged on the inner side of the toothed disc.
[0008] The toothed disc is rotatably connected to the housing via a bearing.
[0009] The driving mechanism adopts a driving motor.
[0010] The driving gear of the driving mechanism is meshed with the toothed disc.
[0011] The first valve and the material distribution valve are both gate valves.
[0012] The first discharge port, the second discharge port and the second hopper are all provided with a clearing mechanism.
[0013] The blockage clearing scraper can be a plurality of pieces and can be arranged in a spiral manner to facilitate material discharge during the rotation process.
[0014] The housing includes an upper shell and a lower shell.
[0015] Thermal power plants often need to perform peak load regulation. When only a small amount of coal is needed, the valves on the second hopper and the first outlet need to be closed; at this time, only the material distribution valve on the second outlet needs to be opened, and the material distribution and feeding mechanism will transfer the coal to the next feeding pipe for coal supply. The drive mechanism drives the gear disc to rotate, and the gear disc drives the blockage removal scraper to rotate, breaking and scraping the materials stuck on the inner wall of the hopper. The drive mechanism can rotate forward and reverse to scrape off the materials that are agglomerated or stuck on the inner wall. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described below in conjunction with the accompanying drawings:
[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0018] Figure 2 This is a top view of the structure of the utility model
[0019] Figure 3 It is a schematic cross-sectional structure diagram of the blockage clearing mechanism of the utility model. DETAILED DESCRIPTION
[0020] Example 1: Figure 1-3 As shown, a material mixing and switching conveying system includes a first hopper 23 and a second hopper 20, wherein a three-way joint 24 is connected below the first hopper 23, wherein a first discharge port 29 of the three-way joint 24 is connected to a first feeding mechanism 31 through a first valve 30, wherein a second discharge port 25 of the three-way joint 24 is connected to a material distribution and feeding mechanism 21 through a material distribution valve 28, wherein the material distribution and feeding mechanism 21 is connected to a second feeding mechanism 33 through a connecting pipe 32. The feed port of the material distribution and feeding mechanism is connected to the material distribution valve 28, the discharge port of the material distribution and feeding mechanism is connected to the upper end of the material distribution pipe, and the lower end of the material distribution pipe is connected to the second feeding mechanism 33.
[0021] The difference between Example 2 and Example 1 is that the material allocation switching and conveying system also includes a clearing mechanism 27, which can be started regularly to clear the stuck materials at the discharge port, and a clearing scraper with a suitable length can be used to meet the needs of different hoppers.
[0022] The difference between Example 3 and Example 2 is that the clearing mechanism includes a shell 7 connected to the hopper discharge port, the shell 7 is provided with a center hole 12 matching the hopper discharge port, the shell 7 is provided with a gear disc 8 rotatably connected thereto, the shell 7 is provided with a driving mechanism 2 for driving the gear disc 8 to rotate, and a clearing scraper 4 is provided on the inner side of the gear disc 8.
[0023] The difference between Example 4 and Example 3 is that a second valve 34 is provided under the second hopper 20 .
[0024] The difference between Example 5 and Example 4 is that the gear plate 8 is rotatably connected to the housing 7 via the bearing 1.
[0025] The difference between Example 6 and Example 5 is that the driving mechanism 2 adopts a driving motor.
[0026] The difference between Example 7 and Example 6 is that the driving gear 9 of the driving mechanism 2 is meshed with the toothed disc 8 .
[0027] The difference between Example 8 and Example 7 is that the first valve 30, the second valve 34 and the material distribution valve 28 are all gate valves.
[0028] The difference between Example 9 and Example 8 is that the first discharge port, the second discharge port and the second hopper are all provided with a clearing mechanism.
[0029] The difference between Example 10 and Example 9 is that the shell includes an upper shell and a lower shell.
[0030] The present invention only requires the installation of a three-way joint at the discharge port of the existing hopper, and the installation of the remaining components of the feeding system under the three-way joint. The installation is convenient and quick, with little modification and low cost. Thermal power plants often need to perform peak load regulation. When only a small amount of coal is needed, the valves on the second hopper and the first discharge port need to be closed; at this time, only the dividing valve on the second discharge port needs to be opened, and the dividing and feeding mechanism transmits the coal to the next discharge pipe for coal supply. The driving mechanism drives the toothed disc to rotate, and the toothed disc drives the blockage-clearing scraper to rotate, breaking and scraping off the materials stuck on the inner wall of the hopper. The driving mechanism can rotate forward and reverse to scrape off the materials that are agglomerated or stuck on the inner wall.
Claims
1. A material deployment switching and conveying system, characterized in that: It includes a first hopper and a second hopper, wherein a three-way joint is connected to the lower part of the first hopper, wherein the first discharge port of the three-way joint is connected to the first feeding mechanism via a first valve, and the second discharge port of the three-way joint is connected to the material dividing and feeding mechanism via a material dividing valve, and the material dividing and feeding mechanism is connected to the second feeding mechanism via a connecting pipe.
2. A material deployment switching and conveying system as claimed in claim 1, characterized in that: The material allocation, switching and conveying system also includes a blockage clearing mechanism.
3. A material deployment switching and conveying system as claimed in claim 2, characterized in that: The clearing mechanism includes a shell arranged on the hopper, the shell is provided with a center hole matching the feeding port of the hopper, a toothed disc rotatably connected thereto is arranged inside the shell, a driving mechanism for driving the toothed disc to rotate is arranged on the shell, and a clearing scraper is arranged on the inner side of the toothed disc.
4. A material deployment switching and conveying system as claimed in claim 3, characterized in that: The toothed disc is rotatably connected to the housing via a bearing.
5. A material deployment switching and conveying system as claimed in claim 4, characterized in that: The driving mechanism adopts a driving motor.
6. A material allocation switching and conveying system as claimed in claim 5, characterized in that: The driving gear of the driving mechanism is meshed with the toothed disc.
7. A material deployment switching and conveying system as claimed in claim 6, characterized in that: The first valve and the material distribution valve are both gate valves.
8. A material deployment switching and conveying system as claimed in claim 7, characterized in that: The clearing mechanism is arranged on the first discharge port, the second discharge port and the second hopper.
9. A material deployment switching and conveying system as claimed in claim 8, characterized in that: The blockage clearing scrapers may be in the form of a plurality of scrapers arranged in a spiral pattern.