Pneumatic injection structure for reducing fine powder rate of high titanium slag on V-shaped powder concentrator
By installing a pneumatic blowing structure on the V-type powder sorter, using the design of the blowing pipe and V-type nozzle, the blowing air flow is adjusted to slow down the discharge speed of high titanium slag and improve the air selection efficiency, the problem of high titanium slag fine powder rate and dust removal ash in the V-type powder sorter is solved, achieving more efficient air selection and reducing product waste rate.
Patent Information
- Application Number
- CN202420679119.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-04-03
AI Technical Summary
In V-type powder sorting machines, some high titanium slag cannot be effectively selected and accurately distinguished, resulting in an increase in fine powder rate and dust removal ash.
A pneumatic blowing structure is adopted, including a blowing pipe located between adjacent wind guide Yeshan. There are connecting plates at both ends of the blowing pipe. Bolt holes are provided between the outer circumference of the connecting plate and the side wall of the V-shaped powder selector, and adjustment bolts are fixed. V-shaped nozzles are provided on the intervals of the blowing pipes. By controlling the ball valve at the outlet of the blowing air bag, selecting the operating state of different blowing pipes, and adjusting the angle and pressure of the blowing pipe, the air compressed air flow sprayed from the V-shaped nozzle can slow down the discharge speed of high titanium slag, providing a small amount of power to improve the air selection efficiency.
It effectively improves the air selection efficiency, reduces the repeated grinding rate and product waste rate of the finished particle grade, and reduces the high titanium slag fine powder rate and dust removal ash generation.
Smart Images
Figure CN222817353U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of powder classifiers, in particular to a pneumatic blowing structure for reducing the fine powder rate of high titanium slag on a V-type powder classifier. Background Art
[0002] High-titanium slag is the main raw material of titanium dioxide chloride. The higher its grade, the more obvious its physical properties of fragility and pulverization, and the greater the amount of dust and fine powder produced during the processing. At present, the processing of high-titanium slag with a grade of about 90% in China generally adopts a production line process of red slag cooling, hammer crushing, jaw crushing, high-pressure roller mill crushing, air separation and screening, and product packaging. Among them, the effect of the high-pressure roller mill crushing process and the effect of the air separation and screening process directly affect the particle size composition and finished product yield of the product.
[0003] The traditional air separation and screening process relies on the circulating air of the fan to blow the fine-grained high-titanium slag out of the V-type powder separator. The V-type powder separator includes a main feed port, a coarse material outlet, an air inlet and an air outlet. A material channel is formed between the main feed port and the coarse material outlet through a number of groups of "V"-shaped blades stacked at a predetermined interval. The "V"-shaped blades include air guide blades near the air inlet and material guide blades near the air outlet. A blade channel connecting the air inlet and the air outlet is formed between two adjacent groups of "V"-shaped blades. The processing effect of the V-type powder separator in this process is limited by the product particle size composition range, and there is a problem that some high-titanium slag cannot be effectively air-separated and accurately distinguished. Some high-titanium slag with slightly finer particle sizes will settle into the bottom discharge pipe of the V-type powder separator together with the coarse particle size, and then enter the high-pressure roller mill, resulting in the high-titanium slag that meets the finished product particle size requirements being crushed by the high-pressure roller mill again, resulting in an increase in the fine powder rate and dust removal ash of the high-titanium slag. Utility Model Content
[0004] The utility model aims to solve the above problems, thereby providing a pneumatic blowing structure which can improve the wind selection efficiency and reduce the fine powder rate of high titanium slag on a V-type powder separator.
[0005] The utility model solves the above problems and adopts the following technical solutions:
[0006] A pneumatic blowing structure for reducing the fine powder rate of high titanium slag on a V-type powder classifier comprises a blowing pipe located between adjacent air guide blades, connecting plates are respectively provided at both ends of the blowing pipe, bolt holes are provided between the outer periphery of the connecting plate and the side wall of the V-type powder classifier along the circumferential interval and are fixed with adjusting bolts, a plurality of V-shaped nozzles pointing to one side of the guide blade and inclined upward are provided on the interval of the blowing pipe, an air intake hose is connected to each blowing pipe, an air intake mechanism is commonly connected to the air intake hose, and a ball valve is provided on the air intake hose.
[0007] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:
[0008] The operating state of different blowing pipes can be selected by controlling the ball valve at the outlet of the blowing air bag. The angle and pressure of the blowing pipe can also be adjusted so that the compressed air flow ejected from the V-shaped nozzle can slow down the feeding speed of the high-titanium slag in the V-shaped powder concentrator, while providing a slight amount of assistance for the air separation, further allowing the fine-grained high-titanium slag to be fully selected, improving the air separation efficiency, further reducing the repeated grinding rate of the finished product particle size, and reducing the product scrap rate.
[0009] As a preferred embodiment, a further technical solution of the utility model is:
[0010] The angle between the V-shaped nozzle and the horizontal plane is between 20-35°.
[0011] The air intake mechanism comprises a blowing air bag which is arranged outside the V-type powder classifier and connected to an air intake hose. The blowing air bag is connected to an air compressed air tank which is provided with a pressure gauge.
[0012] An identification plate is arranged on the air inlet hose and located on the outside of the V-shaped powder classifier.
[0013] The V-shaped nozzles on the blowpipe are spaced 10 cm apart. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the utility model;
[0015] Figure 2 This is a schematic diagram of the connection structure of the blowing air bag and the air intake hose in the embodiment of the utility model;
[0016] Marked in the figure are: air guide blade 1, spray pipe 2, connecting plate 3, V-shaped nozzle 4, spray air bag 5, compressed air tank 6, pressure gauge 7, air intake hose 8, ball valve 9, identification plate 10. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.
[0018] A pneumatic blowing structure for reducing the fine powder rate of high titanium slag on a V-type powder classifier comprises a blowing pipe 2 located between adjacent air guide vanes 1, the blowing pipe 2 is close to the middle of the air guide vanes 1 on the lower side, connecting plates 3 are respectively provided at both ends of the blowing pipe 2, the blowing pipe 2 is fixed between the side walls of the V-type powder classifier through the connecting plates 3, bolt holes are provided between the outer periphery of the connecting plates 3 and the side walls of the V-type powder classifier along the circumferential intervals and adjusting bolts are fixed, a plurality of V-shaped nozzles 4 pointing to one side of the guide vanes and inclined upward are provided on the intervals of the blowing pipe 2, the V-shaped nozzles 4 are protected by the air guide vanes 1 above, the blowing angle of the V-shaped nozzles 4 can be adjusted by rotating the angle of the connecting plates 3, each blowing pipe 2 is connected to an air intake hose 8, a through hole for the air intake hose 8 to enter is provided on the outer frame of the inspection port, an air intake mechanism is commonly connected to the air intake hose 8, a ball valve 9 is provided on the air intake hose 8, and the opening number of the blowing pipe 2 is controlled by controlling the ball valve 9.
[0019] The angle between the V-shaped nozzle 4 and the horizontal plane is between 20° and 35°.
[0020] The air intake mechanism includes a blowing air bag 5 which is arranged on the outside of the V-type powder classifier and connected to the air intake hose 8. The blowing air bag 5 is connected to a compressed air tank 6, and a pressure gauge 7 is arranged on the compressed air tank 6. Before use, close the ball valve 9, inject air into the compressed air tank 6, observe the value of the pressure gauge 7, and open the ball valve 9 after reaching the normal pressure, so that the blowing pipe 2 enters the working state and the operator performs the feeding operation.
[0021] An identification plate 10 is provided on the air intake hose 8 and outside the V-shaped powder classifier. Since the blowing pipe 2 is located inside the machine and cannot be accurately observed, the blowing pipe 2 is required to be identified by the identification plate 10 to control the working status of different blowing pipes 2.
[0022] The V-shaped nozzles on the blowing pipe 2 are spaced 10 cm apart.
[0023] When in use, the particle size analysis and comparison is performed by sampling the feed port and the discharge port of the V-type powder selector. If there is no obvious change in the particle size ratio in the particle size screening results of the sampled particle size at the feed port and the discharge port of the V-type powder selector, it means that the blowing effect is low. At this time, it is necessary to increase the number of ball valves opened and the pressure in the blowing air bag to increase the blowing effect. Continue to take samples at equal intervals until the particle size ratio in the particle size screening results of the sampled particle size at the discharge port of the V-type powder selector is greatly reduced, proving that the fine-grained high-titanium slag inside the V-type powder selector has been selected and has not flowed back into the high-pressure roller mill, the repeated grinding rate of the finished particle size is reduced, and the recovery rate of the product waste particle size is reduced. In addition, during the downtime period, maintenance personnel can also improve the beneficial effect of the blowing tube by adjusting the angle between the V-shaped nozzle and the ground level.
[0024] The operating state of different blowing pipes can be selected by controlling the ball valve at the outlet of the blowing air bag. The angle and pressure of the blowing pipe can also be adjusted so that the compressed air flow ejected from the V-shaped nozzle can slow down the feeding speed of the high-titanium slag in the V-shaped powder concentrator, while providing a slight amount of assistance for the air separation, further allowing the fine-grained high-titanium slag to be fully selected, improving the air separation efficiency, further reducing the repeated grinding rate of the finished product particle size, and reducing the product scrap rate.
[0025] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.
Claims
1. A pneumatic blowing structure for reducing the fine powder rate of high titanium slag on a V-type powder concentrator, characterized in that: It includes a blow pipe located between adjacent air guide blades, with connecting plates respectively provided at both ends of the blow pipe, bolt holes are arranged at annular intervals between the outer periphery of the connecting plate and the side wall of the V-type powder classifier and are fixed with adjusting bolts, and a plurality of V-shaped nozzles pointing to one side of the guide blade and inclined upward are arranged on the interval of the blow pipe, each blow pipe is connected to an air intake hose, an air intake mechanism is commonly connected to the air intake hose, and a ball valve is arranged on the air intake hose.
2. The pneumatic blowing structure for reducing the fine powder rate of high titanium slag on a V-type powder concentrator according to claim 1 is characterized in that: The angle between the V-shaped nozzle and the horizontal plane is between 20-35°.
3. The pneumatic blowing structure for reducing the fine powder rate of high titanium slag on a V-type powder concentrator according to claim 1 is characterized in that: The air intake mechanism comprises a blowing air bag which is arranged outside the V-type powder classifier and connected to an air intake hose. The blowing air bag is connected to an air compressed air tank which is provided with a pressure gauge.
4. The pneumatic blowing structure for reducing the fine powder rate of high titanium slag on a V-type powder concentrator according to claim 1 is characterized in that: An identification plate is arranged on the air inlet hose and located on the outside of the V-shaped powder classifier.
5. The pneumatic blowing structure for reducing the fine powder rate of high titanium slag on a V-type powder concentrator according to claim 1 is characterized in that: The V-shaped nozzles on the blowing pipe are spaced 10 cm apart.