Ball mill for treating fly ash in concrete production

Abstract

The utility model relates to the technical field of concrete production, and discloses a ball mill for fly ash treatment in concrete production, which comprises a bottom plate, a support frame is fixedly mounted at the upper part of the bottom plate, a pressure relief box is fixedly mounted on the bottom plate and positioned on the left side of the support frame, and an adding port I is formed in the upper part of the pressure relief box; a water outlet is formed in the front portion of the pressure relief box, a first valve is fixedly installed on the upper portion of the pressure relief box and located right behind the first adding opening through a pipeline, a four-way connector is fixedly installed on the upper portion of the first valve, and an air heater is fixedly installed on the upper portion of the bottom plate and located right on the left side of the pressure relief box. A second valve is fixedly installed on the upper portion of the air heater through a pipeline and fixedly installed on the left portion of the four-way connector, the valves around the four-way connector are flexibly adjusted, pressure relief is conducted on an inner cavity of the grinding cylinder, the grinding cylinder is cleaned and dried in time, excessive coal ash and water are prevented from remaining in the device, and the working efficiency of the device is kept stable.

Description

Technical Field

[0001] This utility model relates to the field of concrete production technology, and in particular to a ball mill for treating fly ash in concrete production. Background Technology

[0002] Fly ash is a fine ash collected from the flue gas after coal combustion. It is a major solid waste discharged from coal-fired power plants. After being ground in a ball mill, fly ash can be used to produce high-grade concrete using a good fly ash and water-reducing agent composite technology. It is particularly suitable for preparing pumped concrete, mass concrete, impermeable structural concrete, sulfate-resistant concrete, soft water erosion-resistant concrete, underground and underwater engineering concrete, grouting concrete, and roller-compacted concrete. At the same time, fly ash concrete has the advantages of good workability, strong pumpability, improved finishing, increased impact resistance, and enhanced frost resistance.

[0003] In the prior art, the temperature inside the ball mill rises due to the mutual impact between the grinding mechanism and the material, which in turn increases the gas pressure inside the cylinder. If the pressure is not released in time, it can lead to safety accidents. The discharged gas contains a large amount of dust, which can affect the surrounding environment. In addition, after grinding, fly ash is easily left inside the ball mill, which can easily clump together and affect the quality of subsequent processing. Therefore, in order to solve the above problems, this utility model proposes a ball mill for fly ash treatment in concrete production. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a ball mill for treating fly ash in concrete production. By flexibly adjusting the valves around the four-way connector, the inner cavity of the grinding cylinder can be depressurized in a timely manner to avoid dust pollution of the surrounding environment. After grinding, the grinding cylinder is rinsed in time to prevent excessive fly ash accumulation in the device and thus avoid affecting the quality of subsequent processing. After cleaning, the grinding cylinder is dried quickly to prevent moisture accumulation in the inner cavity of the grinding cylinder and maintain the stable working efficiency of the device.

[0005] This utility model provides the following technical solution: A ball mill for treating fly ash in concrete production, comprising a base plate, with two support frames fixedly installed on the upper part of the base plate, symmetrically distributed on the left and right sides. A pressure relief box is fixedly installed on the base plate to the left of the support frames. The pressure relief box has an inlet at its upper part and a drain outlet at its front. A valve is fixedly installed on the upper part of the pressure relief box, directly behind the inlet, via a pipe. A four-way connector is fixedly installed on the upper part of the valve. The pressure relief box is located to the left of the base plate. A hot air blower is fixedly installed, and a valve two is fixedly installed on the upper part of the hot air blower through a pipe. The valve two is fixedly installed on the left side of the four-way connector. A water tank is fixedly installed on the base plate and directly behind the pressure relief box. A pump is fixedly installed on the upper part of the water tank, and a valve three is fixedly installed on the upper part of the pump through a pipe. The valve three is fixedly installed directly above the four-way connector. By flexibly adjusting the valves around the four-way connector, the pressure inside the grinding cylinder is relieved, and the grinding cylinder is cleaned and dried in time to avoid excessive fly ash and moisture remaining in the device and maintain stable working efficiency of the device.

[0006] Preferably, a grinding cylinder is movably sleeved between the two support frames, a protective cover is fixedly installed on the right side of the left support frame, a driven gear is fixedly sleeved on the grinding cylinder and located in the inner cavity of the protective cover, and a motor is fixedly installed on the base plate and located in front of the pressure relief box. The driven gear drives the grinding cylinder to rotate, so that the grinding balls in the grinding cylinder can move freely, thereby grinding the material.

[0007] Preferably, a differential is fixedly installed on the base plate and directly to the right of the motor. The motor output shaft is fixedly connected to the differential input shaft. A drive gear is fixedly sleeved on the differential output shaft. The drive gear meshes with the driven gear. The motor drives the drive gear and the differential adjusts the speed, thereby driving the driven gear to rotate, which facilitates the normal operation of the grinding mechanism.

[0008] Preferably, an oil storage box is fixedly installed on the upper part of the protective cover. The upper part of the inner cavity of the oil storage box has a second filling port. The bottom of the oil storage box has a spray chamber. The spray chamber is fixedly connected to the inner cavity of the protective cover. Four sprayers are evenly and movably sleeved at the bottom of the inner cavity of the oil storage box and located in the spray chamber. The number of sprayers is four. The lubricating oil is sprayed onto the gears through the sprayers, thereby lubricating the two gears, reducing the wear caused by gear contact, and improving the durability of the device.

[0009] Preferably, a discharge valve is fixedly installed at the bottom of the grinding cylinder, and a feed hopper is fixedly installed on the right side of the support frame. The material to be ground is put into the inner cavity of the grinding cylinder through the feed hopper. After grinding is completed, the discharge valve is opened to discharge the powder after grinding. Wastewater formed after cleaning the grinding cylinder is discharged through the discharge valve.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. During the grinding process, open valve one to allow the gas in the grinding cylinder cavity to enter the pressure relief box cavity through the pipe. The gas is then filtered with clean water, causing particles in the gas to settle in the water, thus achieving a good filtration effect and preventing excessive air pressure in the grinding cylinder cavity. After grinding is completed, close valve one and then open the pump and valve three to flush the grinding cylinder cavity with clean water from the water tank, preventing excessive fly ash accumulation in the device. After cleaning, close valve three and open valve two and the hot air blower to quickly dry the grinding cylinder cavity, preventing moisture accumulation and maintaining good operating efficiency of the device.

[0012] 2. By setting up a protective cover, the driven gear is protected to prevent dust and large particles from falling onto it and causing adverse effects on its rotation. During the rotation of the driven gear, the sprayer is turned on to spray the lubricating oil stored in the oil reservoir onto the driven gear. The meshing of the driving gear and the driven gear allows the driving gear to be immersed in lubricating oil, thereby lubricating both gears, reducing wear caused by the contact between the driving gear and the driven gear, and improving the durability of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the four-way connector connection structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the pressure relief structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the lubrication structure of this utility model.

[0017] In the diagram: 1. Base plate; 2. Support frame; 3. Pressure relief box; 4. Inlet 1; 5. Drain outlet; 6. Valve 1; 7. Four-way connector; 8. Hot air blower; 9. Valve 2; 10. Water tank; 11. Pump; 12. Valve 3; 13. Grinding cylinder; 14. Protective cover; 15. Driven gear; 16. Motor; 17. Differential; 18. Drive gear; 19. Oil storage box; 20. Inlet 2; 21. Spray chamber; 22. Sprayer; 23. Discharge valve; 24. Feed hopper. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4 A ball mill for treating fly ash in concrete production includes a base plate 1. Two support frames 2 are fixedly installed on the upper part of the base plate 1, symmetrically distributed. A pressure relief box 3 is fixedly installed on the base plate 1 to the left of the support frames 2. The pressure relief box 3 has an inlet 4 at its upper part and a drain outlet 5 at its front. A valve 6 is fixedly installed on the upper part of the pressure relief box 3, directly behind the inlet 4, via a pipe. A four-way connector 7 is fixedly installed on the upper part of the valve 6. A hot air blower 8 is fixedly installed on the upper part of the base plate 1, directly to the left of the pressure relief box 3. A valve 9 is fixedly installed on the upper part of the hot air blower 8 via a pipe. The valve 9 is fixedly installed on the left side of the four-way connector 7. A water tank 10 is fixedly installed on the base plate 1, directly behind the pressure relief box 3. A pump 11 is fixedly installed on the upper part of the water tank 10. A valve 12 is fixedly installed on the upper part of the pump 11 via a pipe. The valve 12 is fixedly installed directly above the four-way connector 7. During the grinding process, valve 6 is opened. The gas inside the grinding cylinder 13 enters the pressure relief box 3 through a pipe and is filtered by the clean water in the pressure relief box 3. This causes the particles in the discharged gas to settle in the water. The filtered gas can be discharged from the addition port 4, which plays a good filtering role and prevents the pressure in the grinding cylinder 13 from increasing continuously with the rise in temperature. After grinding, valve 6 is closed and pump 11 and valve 12 are turned on. Clean water in water tank 10 is introduced into the grinding cylinder 13 through a pipe. At the same time, the grinding cylinder 13 rotates to flush the inside of the grinding cylinder 13 with clean water. Wastewater is discharged through discharge valve 23 to prevent excessive fly ash from accumulating in the inside of the grinding cylinder 13. After cleaning, valve 12 is closed and valve 9 and hot air blower 8 are turned on. Hot air blown into the inside of the grinding cylinder 13 by hot air blown in, which makes the inside of the grinding cylinder 13 dry quickly and prevents moisture from accumulating in the inside of the grinding cylinder 13. This avoids moisture residue affecting the grinding efficiency of the grinding cylinder 13 and keeps the device working efficiently.

[0020] A grinding cylinder 13 is movably sleeved between two support frames 2. A protective cover 14 is fixedly installed on the right side of the left support frame 2. A driven gear 15 is fixedly sleeved on the grinding cylinder 13 and inside the protective cover 14. The protective cover 14 provides protection for the driven gear 15, preventing dust and large particles from falling on the driven gear 15 and causing adverse effects on its rotation. A motor 16 is fixedly installed on the base plate 1 in front of the pressure relief box 3. A differential 17 is fixedly installed to the right of the motor 16. The output shaft of the motor 16 is fixedly connected to the input shaft of the differential 17. A drive gear 18 is fixedly sleeved on the output shaft of the differential 17. The outer extension of the drive gear 18 meshes with the driven gear 15. An oil reservoir 19 is fixedly installed on the upper part of the protective cover 14. An oil filling port 20 is opened in the upper part of the inner cavity of the oil reservoir 19. A spray chamber 21 is opened in the bottom of the oil reservoir 19. The spray chamber 21 is fixedly connected to the inner cavity of the protective cover 14. Four sprayers 22 are evenly and movably fitted at the bottom of the grinding cylinder 13 and within the spray chamber 21. A discharge valve 23 is fixedly installed at the bottom of the grinding cylinder 13, and a feed hopper 24 is fixedly installed on the right side of the right support frame 2. The material to be ground is placed into the inner cavity of the grinding cylinder 13 through the feed hopper 24. The motor 16 is started and the speed is adjusted through the differential 17, so that the drive gear 18 drives the driven gear 15 to rotate, thereby causing the grinding cylinder 13 to rotate and grind the material. During the rotation of the driven gear 15, the sprayers 22 are turned on to spray the lubricating oil stored in the oil storage box 19 onto the driven gear 15. The meshing of the drive gear 18 and the driven gear 15 allows the drive gear 18 to be immersed in lubricating oil, thereby lubricating the two gears and reducing the wear caused when the drive gear 18 and the driven gear 15 come into contact, thus improving the durability of the device. After grinding is completed, valve 6 is closed and the discharge valve 23 is opened to discharge the ground powder.

[0021] Working principle: The material to be ground is fed into the inner cavity of the grinding cylinder 13 through the feed hopper 24. The motor 16 is started and the speed is adjusted through the differential 17, causing the drive gear 18 to drive the driven gear 15 to rotate, thereby causing the grinding cylinder 13 to rotate and grind the material. During the rotation of the driven gear 15, the sprayer 22 is turned on to spray the lubricating oil stored in the oil storage box 19 onto the driven gear 15. During the grinding process, valve 6 is opened, allowing the gas in the inner cavity of the grinding cylinder 13 to enter the inner cavity of the pressure relief box 3 through the pipe, and then pass through the clean water in the pressure relief box 3. After filtration, the filtered gas can be discharged from the addition port 4. After grinding, close valve 6 and open discharge valve 23 to discharge the ground powder. Then turn on pump 11 and valve 3 12 to input clean water from water tank 10 into the inner cavity of grinding cylinder 13 through the pipeline. At the same time, grinding cylinder 13 rotates to rinse the inner cavity of grinding cylinder 13 with clean water. Wastewater is discharged through discharge valve 23. After cleaning, close valve 3 12 and open valve 2 9 and hot air blower 8. Hot air blower 8 into the inner cavity of grinding cylinder 13 to make the inner cavity of grinding cylinder 13 dry quickly.

Claims

1. A ball mill for fly ash treatment in concrete production comprising a base plate (1) characterized in that: The upper part of the bottom plate (1) is fixedly installed with support frames (2), the number of the support frames (2) is two and they are symmetrically distributed left and right, the upper part of the bottom plate (1) and located in the left of the support frame (2) is fixedly installed with a pressure relief tank (3), the upper part of the pressure relief tank (3) is provided with an adding port one (4), the front part of the pressure relief tank (3) is provided with a drain port (5), the upper part of the pressure relief tank (3) and located in the back of the adding port one (4) is fixedly installed with a valve one (6) through a pipeline, the upper part of the valve one (6) is fixedly installed with a four-way joint (7), the upper part of the bottom plate (1) and located in the left of the pressure relief tank (3) is fixedly installed with a hot air machine (8), the upper part of the hot air machine (8) is fixedly installed with a valve two (9) through a pipeline, the valve two (9) is fixedly installed on the left part of the four-way joint (7), the upper part of the bottom plate (1) and located in the back of the pressure relief tank (3) is fixedly installed with a water tank (10), the upper part of the water tank (10) is fixedly installed with a pump (11), the upper part of the pump (11) is fixedly installed with a valve three (12) through a pipeline, the valve three (12) is fixedly installed above the four-way joint (7).

2. A ball mill for fly ash treatment in concrete production as claimed in claim 1 wherein: The two support frames (2) are movably sleeved with a grinding cylinder (13), the right part of the left support frame (2) is fixedly installed with a protective cover (14), the grinding cylinder (13) is fixedly sleeved with a driven gear (15) in the inner cavity of the protective cover (14), the bottom plate (1) and located in front of the pressure relief tank (3) is fixedly installed with a motor (16).

3. A ball mill for fly ash treatment in concrete production as claimed in claim 2 wherein: The bottom plate (1) and located in the right of the motor (16) is fixedly installed with a differential (17), the output shaft of the motor (16) is fixedly connected with the input shaft of the differential (17), the output shaft of the differential (17) is fixedly sleeved with a driving gear (18), the outer extension of the driving gear (18) is engaged with the driven gear (15).

4. A ball mill for fly ash treatment in concrete production as claimed in claim 2 wherein: The upper part of the protective cover (14) is fixedly installed with an oil storage box (19), the inner cavity of the oil storage box (19) is provided with an adding port two (20) in the upper part, the bottom of the oil storage box (19) is provided with a spraying cavity (21), the spraying cavity (21) is fixedly connected with the inner cavity of the protective cover (14), the inner cavity of the oil storage box (19) and located in the spraying cavity (21) is movably sleeved with a sprayer (22), the number of the sprayer (22) is four.

5. A ball mill for fly ash treatment in concrete production as claimed in claim 2 wherein: The bottom of the grinding cylinder (13) is fixedly installed with a discharge valve (23), the right part of the right support frame (2) is fixedly installed with a feeding hopper (24).

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