Sand mill with easy discharge

Abstract

The application relates to the technical field of sand mills, in particular to a sand mill facilitating discharging, which comprises a cylinder body, cylinder cover plates are fixedly installed on the two sides of the cylinder body, a feeding port is arranged at the top end of the cylinder body, circular through holes are arranged at the centers of the cylinder cover plates, main shafts are rotationally arranged at the circular through holes, belt pulleys are rotationally connected to one end of the main shafts, machine seal mechanisms are fixedly installed in the gaps between the cylinder cover plates and the main shafts, and the machine seal mechanisms comprise machine seal shaft sleeves. The application has the characteristics of short discharging path and fast discharging, and can guarantee that materials and grinding media are not accumulated at the screen mesh to block the screen mesh during sand grinding, so that the discharging is smooth; through the arrangement of the machine seal mechanisms, the materials can be prevented from leaking from the inside of the cylinder body during high-speed rotation of the main shafts, the main shafts can also be supported, the components on the main shafts can be kept in a stable state during rotation, and the service life of the components and the device is prolonged.

Description

Technical Field

[0001] This invention relates to the field of sand mill technology, and more particularly to a sand mill that facilitates material discharge. Background Technology

[0002] Sand mills are currently the most adaptable, advanced, and efficient grinding equipment, featuring the narrowest grinding chamber, smallest lever gap, and most concentrated grinding energy. Combined with a high-performance cooling system and automatic control system, they can achieve continuous material processing and discharge, greatly improving production efficiency. However, existing sand mills have the following drawbacks: 1. Long discharge path, low efficiency, and difficulty in cleaning, easily causing material contamination; 2. Grinding media (zirconia beads) accumulate at the screen, clogging it, leading to uneven discharge, high hopper pressure, and high temperature. Therefore, we propose a sand mill with easier discharge. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sand mill that facilitates material discharge.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A sand mill for easy discharge includes a cylinder, with cylinder cover plates fixedly installed on both sides. A feed inlet is located at the top of the cylinder. A circular through-hole is located at the center of each cylinder cover plate, and a main shaft is rotatably mounted at each through-hole. One end of the main shaft is concentrically connected to a pulley. A mechanical seal mechanism, including a mechanical seal bushing, is fixedly installed in the gap between the cylinder cover plate and the main shaft. Spring seats are located on both sides of the mechanical seal bushing, and springs are located at the spring seats. The springs on the same side of the mechanical seal bushing are fitted with stationary springs that are sleeved on the outside of the main shaft. The stationary ring and the rotating ring are tightly fitted with rotating rings on opposite sides of the main shaft. Each rotating ring has a nut fitted on the opposite side of the main shaft. A discharge hopper is fixedly installed on the side of the cylinder cover plate away from the pulley, and a discharge port is opened at its bottom. The end of the main shaft away from the pulley extends to the outside of the cylinder cover plate away from the pulley. Two sets of turbines are fixedly installed vertically on the outside of the main shaft extending into the cylinder. A screen is fixedly installed on the surface of the main shaft near the discharge hopper. A pump is installed on the side of the cylinder.

[0006] Preferably, the screen is perpendicular to the main shaft.

[0007] Preferably, the end of the main shaft that extends through into the discharge bin has an L-shaped discharge hole at its center, and the vertical support arm of the L-shaped discharge hole coincides with the area where the screen contacts the main shaft.

[0008] Preferably, a key is fixedly connected between the moving ring and the main shaft.

[0009] Preferably, a blade is also fixedly installed on the inner side of the mechanical seal bushing.

[0010] Preferably, the inner side of the mechanical seal bushing is fixedly equipped with an inlet and an outlet on the upper and lower parts near the cylinder cover plate, respectively.

[0011] Preferably, the pump is connected to the inlet on the cylinder and the outlet on the discharge bin via a connecting channel.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. The main shaft runs through the entire cylinder, and through the screen and the L-shaped discharge hole on the main shaft, the material that has been ground inside the cylinder can slide down through the screen and the L-shaped discharge hole into the discharge bin, so that the material is discharged from the discharge port. It has the characteristics of short discharge path and fast discharge. In this process, the screen rotates at high speed with the main shaft, and the material and grinding media will not accumulate at the screen and block the screen, ensuring smooth discharge.

[0014] 2. Mechanical seals are installed at the connection between the main shaft and the cylinder to prevent material leakage from the inside of the cylinder during high-speed rotation of the main shaft. The mechanical seals also support the main shaft to prevent it from jumping and ensure that the components on the main shaft remain stable during rotation, thus extending the service life of the components and the device. Attached Figure Description

[0015] Figure 1 This is a front cross-sectional view of a sand mill that facilitates material discharge, as proposed in this invention.

[0016] Figure 2 This is an enlarged structural schematic diagram of the mechanical sealing mechanism of a sand mill that facilitates material discharge, as proposed in this invention.

[0017] Figure 3 This is a partial cross-sectional view of the main shaft of a sand mill that facilitates material discharge, as proposed in this invention.

[0018] In the diagram: 1. Cylinder body; 2. Screen; 3. Main shaft; 4. Discharge hopper; 5. Pulley; 6. Mechanical seal mechanism; 7. Cylinder cover plate; 8. Turbine; 9. Moving ring; 10. Spring; 11. Inlet; 12. Blade; 13. Outlet; 14. Mechanical seal bushing; 15. Stationary ring; 16. Nut; 17. Key bar. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figure 1-3A sand mill for easy discharge includes a cylinder 1, with cylinder cover plates 7 fixedly installed on both sides of the cylinder 1. A feed inlet is located at the top of the cylinder 1. A circular through hole is provided at the center of each cylinder cover plate 7, and a main shaft 3 is rotatably mounted at the circular through hole. A pulley 5 is concentrically rotatably connected to one end of the main shaft 3. A mechanical seal mechanism 6 is fixedly installed in the gap between the cylinder cover plate 7 and the main shaft 3, including a mechanical seal bushing 14. Spring seats are provided on both sides of the mechanical seal bushing 14, and springs 10 are provided at each spring seat. Each spring 10 on the same side of the mechanical seal bushing 14 has a stationary ring sleeved on the outside of the main shaft 3. 15. On the opposite sides of the stationary ring 15, a rotating ring 9 is tightly fitted and sleeved on the outside of the main shaft 3. On the opposite sides of the rotating ring 9, a nut 16 fitted on the outside of the main shaft 3 is provided to match it. A discharge hopper 4 is fixedly installed on the side of the cylinder cover plate 7 away from the pulley 5, and a discharge port is opened at its bottom. The end of the main shaft 3 away from the pulley 5 extends to the outside of the cylinder cover plate 7 away from the pulley 5. Two sets of turbines 8 are fixedly installed vertically on the outside of the main shaft 3 that extends into the cylinder 1. A screen 2 is fixedly installed on the side of the main shaft 3 near the discharge hopper 4. A pump 18 is installed on the side of the cylinder 1.

[0021] Furthermore, the screen 2 is perpendicular to the main shaft 3. The end of the main shaft 3 that extends into the discharge bin 4 has an L-shaped discharge hole at its center. The vertical support arm of the L-shaped discharge hole coincides with the area where the screen 2 contacts the main shaft 3, so that the ground material can be discharged in a timely manner.

[0022] Furthermore, a key 17 is fixedly connected between the moving ring 9 and the main shaft 3, so that the moving ring 9 can rotate synchronously with the main shaft 3.

[0023] Furthermore, a blade 12 is fixedly installed on the inner side of the mechanical seal bushing 14 to transport cooling water, thereby cooling the rotating ring 9 and the stationary ring 15.

[0024] Furthermore, the inner side of the mechanical seal bushing 14 is fixedly equipped with an inlet 11 and an outlet 13 near the upper and lower parts of the cylinder cover plate 7, respectively, to facilitate the entry and exit of cooling water.

[0025] Furthermore, a connecting channel 1 is provided between the pump 18 and the feed inlet on the cylinder 1 and the discharge outlet on the discharge bin 4, thereby facilitating the extraction and re-grinding of materials and improving the fineness of the grinding.

[0026] Workflow: First, the material and grinding media are injected through the feed inlet on the top side of the cylinder 1. Then, the pulley 5 is connected to the drive structure (connected to a motor with another set of pulleys via a transmission belt). Under the action of the drive structure, the pulley 5 drives the main shaft 3 to rotate. During the rotation of the main shaft 3, the turbine 3 drives the internal material and grinding media to rotate at high speed and collide with each other, thereby achieving a certain grinding effect. When a portion of the ground material falls onto the screen 2, it is filtered by the pump 18 and then pumped through the L-shaped discharge hole on the main shaft 3 to the inside of the discharge bin 4, and then discharged from the discharge port of the discharge bin 4 to complete one grinding process. The material discharged from the discharge bin 4 is pumped again by the pump 18 to the feed inlet on the top side of the cylinder 1 for the next grinding. During the grinding process, samples are taken at intervals for fineness testing. The grinding task is considered complete only when the required fineness is achieved.

[0027] During use, the mechanical seal mechanism 6 requires cooling water to enter the mechanical seal bushing 14 through the inlet 11. The mechanical seal bushing 14 and the blades 12 on it rotate together with the main shaft 3 to deliver chilled water to the left and right rotating rings 9 and stationary rings 15 to cool the rotating rings 9 and stationary rings 15 that are heated due to friction, thereby solving the problem of excessive temperature in the hopper. When the solution in the hopper seeps into the gap between the cylinder 1 and the main shaft 3, the rotating rings 9 and stationary rings 15 rotate at high speed to form a water film in the gap between them, thereby blocking the solution that has seeped into the gap and ensuring that there is no leakage.

[0028] Since the device is equipped with mechanical sealing mechanisms 6 on both sides, the entire device can be tilted at a certain angle during use, thereby adapting to the needs of different situations.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sand mill facilitating discharge, characterized by, Include: The barrel (1), both sides of the barrel (1) are fixedly installed with barrel cover plate (7), the top end of the barrel (1) is provided with a feed inlet, the center of the barrel cover plate (7) is provided with a circular hole, and the main shaft (3) is rotatably arranged at the circular hole, and the one end of the main shaft (3) is rotatably connected with the belt pulley (5); The machine seal mechanism (6) is fixedly installed in the gap between the barrel cover plate (7) and the main shaft (3), which comprises a machine seal sleeve (14), both sides of the machine seal sleeve (14) are provided with spring seat, and the spring (10) is arranged at the spring seat, and the spring (10) on the same side of the machine seal sleeve (14) is provided with a static ring (15) sleeved on the outer side of the main shaft (3), the side of the static ring (15) away from each other is tightly provided with a dynamic ring (9) sleeved on the outer side of the main shaft (3), the side of the dynamic ring (9) away from each other is provided with a nut (16) sleeved on the outer side of the main shaft (3) matched with it; The discharge bin (4) is fixedly installed on one side of the barrel cover plate (7) away from the belt pulley (5), and the bottom is provided with a discharge port, and the one end of the main shaft (3) away from the belt pulley (5) extends to the outer side of the barrel cover plate (7) away from the belt pulley (5); The turbine (8) is provided with two groups, which are fixedly installed on the outer side of the main shaft (3) extending into the barrel (1); The screen (2) is fixedly installed on the surface of the main shaft (3) near the discharge bin (4); The pump (18) is arranged on one side of the barrel (1); The one end of the main shaft (3) penetrating into the discharge bin (4) is provided with an L-shaped discharge hole at the center, and the area of the screen (2) contacting with the main shaft (3) coincides with the vertical branch of the L-shaped discharge hole; The inner side of the machine seal sleeve (14) is also fixedly installed with a paddle (12); The inner side of the machine seal sleeve (14) is fixedly installed with water inlet (11) and water outlet (13) near the upper and lower parts of the barrel cover plate (7) respectively; The pump (18) is connected with the connecting channel (19) between the feed inlet of the barrel (1) and the discharge port of the discharge bin (4).

2. A sand mill with facilitated discharge according to claim 1, characterized in that The screen (2) is perpendicular to the main shaft (3).

3. A sand mill with facilitated discharge according to claim 1, characterized in that, The key bar (17) is fixedly connected between the dynamic ring (9) and the main shaft (3).

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