Device for improving powder selecting efficiency of V-shaped powder selecting machine

Abstract

The utility model relates to the technical field of cement rolling systems, and particularly provides a device for improving the powder selecting efficiency of a V-shaped powder selecting machine. The V-shaped powder selecting machine comprises the V-shaped powder selecting machine body, the sedimentation mechanism and the double-cyclone separator, the sedimentation mechanism comprises the sedimentation bin, the separation efficiency of coarse powder and fine powder in the powder selecting process is effectively improved due to the fact that the sedimentation mechanism and the double-cyclone separator are arranged, the coarse powder which is not screened can fall off and be collected in time due to the arrangement of the sedimentation mechanism, and therefore the separation efficiency of the coarse powder and the fine powder is improved. Coarse powder in the settling bin enters the external weighing bin through the discharging pipe to be subjected to secondary rolling treatment, the fineness uniformity of the materials is further improved, the product quality is improved, the double-layer heavy hammer flap valve guarantees stable operation of equipment in a negative pressure state, and the service life of the powder concentrator is prolonged. The powder selecting effect is further improved, dust leakage is effectively prevented, and the negative pressure state in the settling bin is checked in real time through an air pressure sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of cement roller pressing systems, in particular to a device for improving the powder selection efficiency of a V-type powder classifier. Background Art

[0002] The V-type powder separator is a static grading and breaking-up equipment specially designed for use with roller presses. Its main function is to break up the caked materials coming out of the roller press and separate qualified fine powder. It is widely used in industries such as cement. As one of the important supporting equipment for roller presses, it plays an important role in increasing the output of the grinding system and reducing the power consumption of the system.

[0003] The inventors of this application have found the following problems in practical use:

[0004] At present, during the powder selection process of traditional V-type powder classifiers, some coarse particles may not be effectively separated. The unseparated coarse particles will be blown to the double cyclone separator by the wind and eventually fall into the finished product through the discharge port, so that the product may be mixed with unqualified coarse particles, resulting in low powder selection efficiency, which in turn affects product quality and production efficiency.

[0005] Therefore, it is necessary to provide a device for improving the powder selection efficiency of the V-type powder classifier to solve the above technical problems. Utility Model Content

[0006] The technical problem to be solved by the present invention is that some coarse particles cannot be effectively separated. The unseparated coarse particles will be blown to the double cyclone separator by the wind and eventually fall into the finished product through the discharge port, so that unqualified coarse particles may be mixed into the product. In view of the above-mentioned defects of the prior art, a device for improving the powder selection efficiency of the V-type powder classifier is provided.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a device for improving the powder selection efficiency of a V-type powder classifier, comprising a V-type powder classifier, a sedimentation mechanism and a double cyclone separator, the sedimentation mechanism comprising a sedimentation bin, an air pressure sensor being provided inside the sedimentation bin, a separation bin being provided at the bottom of the sedimentation bin, a first double-layer heavy hammer flap valve being provided inside the separation bin, and a discharge pipe being provided at the bottom of the separation bin.

[0008] By adopting the above technical solution, the sedimentation bin allows the coarse particles in the air flow to settle effectively under the action of gravity, reducing the interference with the separation of fine powder and effectively improving the separation efficiency of coarse powder and fine powder during the powder selection process. The discharge pipe ensures that the coarse particles can be smoothly discharged from the separation bin to the stabilizing bin or weighing bin for subsequent processing.

[0009] It is further provided that the V-shaped powder classifier includes a powder classifier air inlet, a powder classifier feed inlet is provided on one side of the powder classifier air inlet, and a cover plate is provided on the top of the powder classifier feed inlet.

[0010] By adopting the above technical solution, the air inlet of the powder classifier is the main channel for the air flow to enter the powder classifier, which can accurately control the flow rate and speed of the air flow and provide stable aerodynamic conditions for the powder selection process.

[0011] It is further provided that a screening bin is provided at the bottom of the powder classifier feed port, a coarse powder discharge outlet of the powder classifier is provided at the bottom of the screening bin, a stabilizing bin is provided at the bottom of the coarse powder discharge outlet of the powder classifier, and a stabilizing bin outlet is provided at the bottom of the stabilizing bin.

[0012] By adopting the above technical solution, the screening bin is located at the bottom of the powder classifier feed port, which can perform preliminary classification screening on the incoming materials and separate the coarse powder with larger particles from the fine powder.

[0013] It is further provided that a powder selector gas-powder mixture outlet is provided on one side of the screening bin, and one end of the powder selector gas-powder mixture outlet is connected to the double cyclone separator and the sedimentation mechanism through a connecting pipe.

[0014] By adopting the above technical solution, the gas-powder mixture outlet is the outlet of the gas-powder mixture in the screening bin, which can ensure that the mixture is discharged smoothly and avoid accumulation in the screening bin.

[0015] It is further provided that a dust outlet is provided at the top of the double cyclone separator, and a discharge pipe is provided at the bottom of the double cyclone separator.

[0016] By adopting the above technical solution, the discharge pipe serves as the outlet of the fine powder in the double cyclone separator, which can ensure that the fine powder is discharged smoothly and avoids accumulation inside the separator.

[0017] It is further provided that a second double-layer weight flap valve is provided inside the discharge pipe, and the bottom of the discharge pipe is connected to an external fine powder collection bin.

[0018] By adopting the above technical solution, the second double-layer weight hammer flap valve controls the flow of material in the discharge pipe through the weight of the weight hammer and the opening of the flap, thereby achieving precise flow regulation.

[0019] It is further provided that the shape of the sedimentation bin is an inverted cone, and the sedimentation bin is made of manganese steel.

[0020] By adopting the above technical solution, the inverted cone gradually reduces the space inside the sedimentation bin, which helps the particles in the air flow to settle faster under the action of gravity and improves the sedimentation efficiency.

[0021] It is further configured that the air pressure sensor model is MIK-P300, and the air pressure sensor is used to detect the internal air pressure of the sedimentation bin.

[0022] By adopting the above technical solution, the MIK-P300 air pressure sensor uses a high-performance silicon piezoresistive pressure oil-filled core as the pressure sensitive core, ensuring that the sensor has extremely high measurement accuracy.

[0023] Compared with the related art, the device for improving the powder selection efficiency of the V-type powder classifier provided by the present invention has the following beneficial effects:

[0024] The utility model provides a device for improving the powder selection efficiency of a V-type powder classifier. By arranging a sedimentation mechanism and a double cyclone separator, the separation efficiency of coarse powder and fine powder in the powder selection process is effectively improved. The arrangement of the sedimentation mechanism enables the coarse powder that has not been screened to fall and be collected in time, avoiding its circulation and accumulation in the powder classifier, thereby improving the overall working efficiency of the powder classifier. The coarse powder in the sedimentation bin enters the external weighing bin through a discharge pipe for secondary roller pressing treatment, further improving the fineness uniformity of the material and improving product quality.

[0025] The utility model provides a device for improving the powder selection efficiency of a V-type powder classifier. By arranging an air pressure sensor and a double-layer weight hammer flap valve, the double-layer weight hammer flap valve ensures that the equipment operates stably under a negative pressure state, further improving the powder selection effect and effectively preventing dust leakage. The air pressure sensor checks the negative pressure state in the sedimentation bin in real time. When the negative pressure state is destroyed, an alarm can be issued in time to notify maintenance personnel to inspect the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0027] Figure 2 This is an internal cross-sectional view of the sinking mechanism of the utility model;

[0028] Figure 3 It is a partial cross-sectional view of the utility model;

[0029] Figure 4 It is a schematic diagram of the planar structure of the present utility model.

[0030] Numbers in the figure: 1. V-type powder classifier; 101. Powder classifier air inlet; 102. Powder classifier feed inlet; 103. Cover plate; 104. Coarse powder discharge outlet of powder classifier; 105. Air-powder mixture outlet of powder classifier; 106. Screening bin; 2. Connecting pipe; 3. Sedimentation mechanism; 301. Sedimentation bin; 302. Separation bin; 303. Discharge pipe; 304. Air pressure sensor; 305. First double-layer weight flap valve; 4. Double cyclone separator; 5. Dust outlet; 6. Discharge pipe; 7. Second double-layer weight flap valve; 8. Flow stabilization bin; 9. Flow stabilization bin outlet. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings, in which typical embodiments of the present invention are shown.

[0032] Example 1:

[0033] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the utility model is a device for improving the powder selection efficiency of a V-type powder classifier, comprising a V-type powder classifier 1, a sedimentation mechanism 3 and a double cyclone separator 4, the sedimentation mechanism 3 comprising a sedimentation bin 301, an air pressure sensor 304 is arranged inside the sedimentation bin 301, a separation bin 302 is arranged at the bottom of the sedimentation bin 301, a first double-layer weight hammer flap valve 305 is arranged inside the separation bin 302, and a discharge pipe 303 is arranged at the bottom of the separation bin 302. The sedimentation bin 301 allows the coarse particles in the airflow to effectively settle under the action of gravity, thereby reducing interference with the separation of fine powder and effectively improving the separation efficiency of coarse powder and fine powder during the powder selection process.

[0034] like Figure 1 、 Figure 4 As shown, the V-shaped powder classifier 1 includes a powder classifier air inlet 101, a powder classifier feed port 102 is provided on one side of the powder classifier air inlet 101, and a cover plate 103 is provided on the top of the powder classifier feed port 102. The powder classifier air inlet 101 is the main channel for the air flow to enter the powder classifier, which can accurately control the flow rate and speed of the air flow and provide stable aerodynamic conditions for the powder selection process. The cover plate 103 is located on the top of the powder classifier feed port 102, which can effectively prevent the material from flying and leaking during the feeding process and reduce dust pollution.

[0035] like Figure 1 、 Figure 4As shown, a screening bin 106 is provided at the bottom of the powder classifier feed port 102, a powder classifier coarse powder discharge port 104 is provided at the bottom of the screening bin 106, a stabilizing bin 8 is provided at the bottom of the powder classifier coarse powder discharge port 104, a stabilizing bin 8 is provided at the bottom of the stabilizing bin 8, and a stabilizing bin outlet 9 is provided at the bottom of the stabilizing bin 8. The screening bin 106 is located at the bottom of the powder classifier feed port 102, and can perform preliminary grading and screening on the incoming material, and separate larger particles of coarse powder from fine powder. The powder classifier coarse powder discharge port 104 can ensure that the coarse powder is discharged smoothly to avoid accumulation in the screening bin 106.

[0036] Example 2:

[0037] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, a powder selector air-powder mixture outlet 105 is provided on one side of the screening bin 106, and one end of the powder selector air-powder mixture outlet 105 is connected to the double cyclone separator 4 and the sedimentation mechanism 3 through a connecting pipe 2. The air-powder mixture outlet 105 is the outlet of the air-powder mixture in the screening bin 106, which can ensure that the mixture is discharged smoothly to avoid accumulation in the screening bin 106. The connecting pipe 2 is the channel for transmitting the air-powder mixture from the powder selector air-powder mixture outlet to the double cyclone separator 4 and the sedimentation mechanism 3, ensuring continuous transmission of materials.

[0038] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, a dust outlet 5 is provided at the top of the double cyclone separator 4, and a discharge pipe 6 is provided at the bottom of the double cyclone separator 4. The discharge pipe 6 serves as an outlet for fine powder in the double cyclone separator 4, which can ensure that the fine powder is discharged smoothly and avoids accumulation inside the separator. The double cyclone separator 4 efficiently separates the fine powder from the gas-powder mixture through centrifugal force and air resistance, thereby improving the purity of the product.

[0039] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, a second double-layer weight flap valve 7 is provided inside the discharge pipe 6, and the bottom of the discharge pipe 6 is connected to the external fine powder collection bin. The second double-layer weight flap valve 7 controls the flow of material in the discharge pipe 6 by the weight of the weight and the opening of the flap, thereby realizing precise flow regulation. The second double-layer weight flap valve 7 ensures stable operation of the equipment under negative pressure, further improves the powder selection effect and effectively prevents dust leakage.

[0040] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the sedimentation bin 301 is shaped like an inverted cone and is made of manganese steel. The inverted cone shape gradually reduces the space inside the sedimentation bin 301, which helps the particles in the airflow to settle faster under the action of gravity, thereby improving the sedimentation efficiency. Manganese steel is a material with extremely strong wear resistance and can withstand long-term erosion and wear of materials and airflow, thereby extending the service life of the sedimentation bin 301.

[0041] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the air pressure sensor 304 is model MIK-P300. The air pressure sensor 304 is used to detect the internal air pressure of the sedimentation bin 301. The MIK-P300 air pressure sensor 304 uses a high-performance silicon piezoresistive pressure oil-filled core as the pressure sensitive core, ensuring that the sensor has extremely high measurement accuracy. The air pressure sensor 304 monitors the air pressure changes inside the sedimentation bin 301 in real time, and the operator can promptly understand the negative pressure situation in the sedimentation bin 301.

[0042] During implementation, first, the equipment is connected and installed, and air is introduced into and out of the air inlet 101 of the powder classifier. Then, the cover 103 is opened to add material to the feed port 102 of the powder classifier. After screening by the screening bin 106, the coarse powder is discharged from the coarse powder outlet 104 of the powder classifier into the stabilizing bin 8, and the fine powder is carried by the gas to the gas-powder mixture outlet 105 of the powder classifier, and then output to the double cyclone separator 4 through the connecting pipe 2. During the transportation process, the unscreened coarse powder falls into the sedimentation bin 301 and falls downward onto the first double-layer weight flap valve 305. The first double-layer weight flap valve 305 is flipped in sequence to ensure that the negative pressure in the sedimentation bin 301 is maintained, so that the coarse powder slides from the discharge pipe 303 to the stabilizing bin 8 and the coarse powder screened by the screening bin 106 together with the coarse powder from the stabilizing bin outlet 9 to the external weighing bin for secondary rolling treatment. The fine powder is discharged from the discharge pipe 6 through the second double-layer weight flap valve 7.

[0043] The advantages of this technical solution in practical applications include but are not limited to the following:

[0044] 1. The setting of the sedimentation mechanism enables the unscreened coarse powder to fall and be collected in time, thus improving the overall working efficiency of the powder classifier;

[0045] 2. The setting of double-layer heavy hammer flap valve enables the equipment to operate stably under negative pressure, further improving the powder selection effect and effectively preventing dust leakage.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for improving the powder selection efficiency of a V-type powder separator, characterized by: The invention comprises a V-shaped powder selector (1), a sedimentation mechanism (3) and a double cyclone separator (4); the sedimentation mechanism (3) comprises a sedimentation bin (301); an air pressure sensor (304) is provided inside the sedimentation bin (301); a separation bin (302) is provided at the bottom of the sedimentation bin (301); a first double-layered weight flap valve (305) is provided inside the separation bin (302); and a discharge pipe (303) is provided at the bottom of the separation bin (302).

2. A device for improving the powder selection efficiency of a V-type powder separator according to claim 1, characterized in that: The V-shaped powder concentrator (1) comprises a powder concentrator air inlet (101), a powder concentrator feed inlet (102) is provided on one side of the powder concentrator air inlet (101), and a cover plate (103) is provided on the top of the powder concentrator feed inlet (102).

3. A device for improving the powder selection efficiency of a V-type powder separator according to claim 2, characterized in that: A screening bin (106) is provided at the bottom of the powder classifier feed port (102), a powder classifier coarse powder discharge port (104) is provided at the bottom of the screening bin (106), a stabilizing bin (8) is provided at the bottom of the powder classifier coarse powder discharge port (104), and a stabilizing bin outlet (9) is provided at the bottom of the stabilizing bin (8).

4. A device for improving the powder selection efficiency of a V-type powder separator according to claim 3, characterized in that: A powder selector gas-powder mixture outlet (105) is provided on one side of the screening bin (106), and one end of the powder selector gas-powder mixture outlet (105) is connected to the double cyclone separator (4) and the sedimentation mechanism (3) through a connecting pipe (2).

5. The device for improving the powder selection efficiency of a V-type powder separator according to claim 1, characterized in that: A dust outlet (5) is provided at the top of the double cyclone separator (4), and a discharge pipe (6) is provided at the bottom of the double cyclone separator (4).

6. The device for improving the powder selection efficiency of a V-type powder separator according to claim 5, characterized in that: A second double-layered hammer flap valve (7) is provided inside the discharge pipe (6), and the bottom of the discharge pipe (6) is connected to an external fine powder collection bin.

7. The device for improving the powder selection efficiency of a V-type powder separator according to claim 1, characterized in that: The sedimentation bin (301) is in the shape of an inverted cone and is made of manganese steel.

8. The device for improving the powder selection efficiency of a V-type powder separator according to claim 1, characterized in that: The air pressure sensor (304) is of model MIK-P300 and is used to detect the internal air pressure of the sedimentation bin (301).

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