Grinding and screening device for stone powder processing

Abstract

The utility model discloses a grinding and screening device for stone powder processing, relates to the technical field of stone powder processing, and aims to provide a grinding and screening device for stone powder processing, which is convenient for performing multiple screening and collection on stone powder and reducing raised dust of the stone powder, and comprises a box body, a feeding hopper and a dustproof mechanism are arranged on the box body, and a grinding box is arranged on one side of the box body. The box body is internally provided with a screening mechanism, the screening mechanism comprises a coarse mesh screen, a medium mesh screen, a fine mesh screen and three vibration motors, and the stone powder and dust in the air are sucked into a dust collection bag through the arrangement of the dustproof mechanism, so that the stone powder and dust are prevented from overflowing and being sucked by workers during screening; stone powder is screened step by step through the three-layer screen, and coarse-grain stone powder which cannot pass through the coarse-mesh screen can be fed into the grinding box to be ground and then fed into the box body again to be screened; the obliquely-arranged screen is matched with the vibration motor to screen the stone powder step by step and then send the stone powder into the material collecting box, manual step-by-step cleaning and collecting of the stone powder are not needed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stone powder processing, and more specifically, it relates to a grinding and screening device for stone powder processing. Background Art

[0002] Stone powder is a general term for the powder of stones. There are many types of stones. According to the mineral composition, there are many varieties. Rocks with many mineral components can be ground into powder and used for different processes and purposes.

[0003] At present, a Chinese patent with the application number CN201920738067.3 discloses a grinding and screening device for stone powder processing, including a box body. An inlet is opened above the box body, and the box body is connected to a feed hopper through the inlet. A motor cover is embedded on the left outer wall of the box body, and a vibration motor is installed inside the motor cover. By setting the vibration motor, a coarse-hole sieve, a medium-hole sieve, and a fine-hole sieve, when in use, the first screening cavity can receive the stone powder falling from the feed hopper, and the stone powder is screened layer by layer under the combined action of the vibration motor and the three-layer sieves. Although the purpose of layered screening and separation is achieved, its sieve meshes of each layer are horizontally arranged, and the stone powder in the upper layer is easily blocked by the stone powder in the lower layer, and it is also very difficult for the stone powder with a smaller size to pass through the sieve holes and enter the next screening cavity for screening. Moreover, a large amount of screened stone powder is evenly placed on the sieve mesh, far from the side door, and it takes a lot of time for the staff to collect and clean the stone powder of each layer; in addition, the inlet at the top of the box body is an open structure, and when vibrating and screening inside the box body, a large amount of powder is likely to fly into the air, and it is easy to pose a threat to the physical health of the staff when they inhale a large amount. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a grinding and screening device for stone powder processing that is convenient for multi-stage screening and collection of stone powder and reduces the dusting of stone powder.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions:

[0006] A grinding and screening device for stone powder processing, comprising a box body. A communicating feed hopper is provided on the box body, and a cover plate is hinged to the feed hopper. A first discharge port and a second discharge port are opened on one side of the box body, a grinding outlet and a third discharge port are opened on the other side of the box body. A dust-proof mechanism is provided on the box body. A grinding box communicated with the grinding outlet is fixed on one side of the box body, and a grinding mechanism is arranged in the grinding box. A screening mechanism is arranged in the box body, and the screening mechanism includes a coarse-hole screen, a medium-hole screen, a fine-hole screen and three vibration motors. The coarse-hole screen, the medium-hole screen and the fine-hole screen are all fixed in the box body in an inclined shape from top to bottom. The output ends of the three vibration motors are respectively corresponding to and fixedly connected with the coarse-hole screen, the medium-hole screen and the fine-hole screen. The dust-proof mechanism is located above the coarse-hole screen, and a first aggregate box and a second aggregate box are respectively arranged at the lower ends of the medium-hole screen and the fine-hole screen.

[0007] Further, the dust-proof mechanism includes an installation box, a suction fan, a connecting pipe, a suction head, a filter screen and a dust collection bag. The installation box is fixed on one side of the box body, the suction fan is placed in the installation box and installed on the connecting pipe. One end of the connecting pipe extends into the box body and is fixedly connected with the suction head. The filter screen is fixed on the suction head, and the outer end of the connecting pipe is connected and communicated with the dust collection bag.

[0008] Further, the grinding mechanism includes a driving motor, an upper grinding stone, a lower grinding stone, a filter screen and a guide pipe. The driving motor is fixed on the grinding box, and the output end of the driving motor extends into the grinding box and is fixedly connected with the upper grinding stone. The lower grinding stone is fixed in the grinding box. A grinding space is arranged between the upper grinding stone and the lower grinding stone. A through hole is opened on the lower grinding stone, and the filter screen is fixed in the through hole. The upper end of the guide pipe is connected and communicated with the through hole of the lower grinding stone, the lower end of the guide pipe is connected and communicated with the inside of the box body, and the lower end of the guide pipe is placed above the medium-hole screen.

[0009] Further, the first aggregate box and the second aggregate box are respectively placed at the first discharge port and the second discharge side. A third aggregate box is also arranged in the box body. The third aggregate box is movably connected with the third discharge port of the box body, and a handle is fixed on the third aggregate box.

[0010] By adopting the above technical solutions, the beneficial effects of the utility model are as follows: By setting the dust-proof mechanism, the stone powder dust in the air is sucked into the dust collection bag by the suction fan, and cooperating with covering the cover plate of the feed port, it is prevented that the stone powder dust overflows due to the vibration of the screen during screening and is inhaled by the staff; The three-layer screen screens the stone powder step by step. The coarse-grained stone powder that cannot pass through the coarse-hole screen will be sent into the grinding box for grinding and then sent into the box body again for screening; The inclined screen cooperating with the vibration motor can screen the stone powder step by step and send it into the aggregate box respectively, without manually cleaning and collecting the stone powder step by step, improving the work efficiency. Description of the Drawings

[0011] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0012] Figure 2 This is a schematic sectional structure diagram of an embodiment of the present utility model.

[0013] Figure 3 This is a schematic structure diagram of a grinding mechanism of an embodiment of the present utility model.

[0014] Reference numerals: 1 box body, 101 first discharge port, 102 second discharge port, 103 third discharge port, 104 grinding outlet, 2 feed hopper, 3 cover plate, 4 grinding box, 5 coarse hole sieve, 6 medium hole sieve, 7 fine hole sieve, 8 vibration motor, 9 installation box, 10 exhaust fan, 11 connecting pipe, 12 suction head, 13 filter screen, 14 dust collection bag, 15 drive motor, 16 upper grinding stone, 17 lower grinding stone, 171 through hole, 18 filter screen, 19 guide pipe, 20 first aggregate box, 21 second aggregate box, 22 third aggregate box, 221 handle. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] Refer to Figures 1 to 3 for further description of the embodiments of the present utility model.

[0017] A powder grinding and screening device for stone powder processing includes a box body 1. A feed hopper 2 fixedly connected and communicated is provided at the top of the box body 1. A cover plate 3 is hingedly connected to the feed hopper 2. A first discharge port and a second discharge port are opened on one side of the box body 1, and a grinding outlet and a third discharge port are opened on the other side of the box body.

[0018] A dust-proof mechanism is provided on the box body 1, and the dust-proof mechanism is located above the coarse-hole screen 5. The dust-proof mechanism includes an installation box 9, a suction fan 10, a connecting pipe 11, a suction head 12, a filter screen 13 and a dust collection bag 14. The installation box 9 is fixed on one side outside the box body 1. The suction fan 10 is placed in the installation box 9 and is installed and matched with the connecting pipe 11. The connecting pipe 11 penetrates through the installation box and extends into the box body 1. The suction head 12 is placed in the box body 1 and is connected and communicated with the connecting pipe 11. The filter screen 13 is fixed in the suction head 12. The outer end of the connecting pipe 11 is connected and communicated with the dust collection bag 14. When pouring stone powder into the feed hopper 2, start the suction fan 10, and the fine stone powder dust raised during pouring can be timely extracted through the suction head 12 and the connecting pipe 11 and collected into the dust collection bag 14. And the filter screen 13 can screen the stone powder dust to prevent the stone powder from being sucked away.

[0019] A screening mechanism is provided in the box body 1. The screening mechanism includes a coarse-hole screen 5, a medium-hole screen 6, a fine-hole screen 7 and three vibration motors 8. The coarse-hole screen 5, the medium-hole screen 6 and the fine-hole screen 7 are fixed in the box body 1 from top to bottom. The inclination directions of the medium-hole screen 6 and the fine-hole screen 7 are the same, and the coarse-hole screen 5 inclines in another direction. The three vibration motors 8 are all fixed in the box body 1. The output ends of the three vibration motors are respectively fixedly connected to the coarse-hole screen 5, the medium-hole screen 6 and the fine-hole screen 7 in one-to-one correspondence. The vibration of the output ends of the vibration motors 8 can drive the coarse-hole screen 5, the medium-hole screen 6, the fine-hole screen 7 and the stone powder to vibrate respectively, accelerating the screening of the stone powder, avoiding the accumulation of the stone powder on the screen, and driving the stone powder of a certain thickness and specification screened out on the screen to fall into the corresponding aggregate box.

[0020] On one side of the box body 1, there are a first aggregate box 20 and a second aggregate box 21. The first aggregate box 20 and the second aggregate box 21 are respectively placed on the sides of the first discharge port 101 and the second discharge port 102, and both the first aggregate box 20 and the second aggregate box 21 are detachably connected to the box body 1. There is also a third aggregate box 22 in the box body. The third aggregate box 22 is movably connected to the third discharge port 103 of the box body 1, and a handle 221 is fixed on the third aggregate box 22. The handle 221 can be held to pull out or put the third aggregate box 22 from the third discharge port 103.

[0021] The grinding box 4 is fixed to one side of the box body 1 and is in communication with the inside of the box body 1. A grinding mechanism is provided in the grinding box 4. The grinding mechanism includes a driving motor 15, an upper grinding stone 16, a lower grinding stone 17, a filter screen 18 and a feed pipe 19. The driving motor 15 is fixed to the grinding box 4. The output end of the driving motor 15 extends into the grinding box 4 and is fixedly connected to the upper grinding stone 16. The lower grinding stone 17 is fixed in the grinding box 4. A grinding space is provided between the upper grinding stone 16 and the lower grinding stone 17. The coarse stone powder that fails to pass through the coarse hole screen 5 falls along the inclined coarse hole screen 5 into the grinding box 4 and drops into the grinding space. The rotation of the output end of the driving motor 15 drives the upper grinding stone 16 to rotate, so that the coarse stone powder is ground between the upper grinding stone 16 and the lower grinding stone 17. A through hole 171 is opened in the center of the lower grinding stone 17. The filter screen 18 is fixed in the through hole 171. When the coarse stone powder is ground to a certain fineness, it can be screened out from the screen holes of the filter screen 18. The upper end of the feed pipe 19 is connected and communicated with the through hole 171 of the lower grinding stone 17. The lower end of the feed pipe 19 is connected and communicated with the inside of the box body 1 and is placed above the middle hole screen 6. The ground stone powder is conveyed along the feed pipe 19 to the middle hole screen 6 and continues to be screened.

[0022] The working principle of the embodiment of the present invention is as follows: Open the cover plate 3, pour the stone powder to be screened from the feed hopper 2, start the exhaust fan 10 to suck and collect the dust into the dust collection bag 14 to reduce the dust diffusion. Close the cover plate 3. The three vibration motors 15 drive the coarse hole screen 5, the middle hole screen 6 and the fine hole screen 7 to vibrate respectively. The stone powder with larger coarse particles that cannot pass through the screen holes of the coarse hole screen 5 falls into the grinding box 4 under the drive of the vibration motor 8. The rotation of the output end of the driving motor 15 drives the upper grinding stone 16 to rotate, so that the coarse stone powder is ground between the upper grinding stone 16 and the lower grinding stone 17. The ground stone powder falls onto the middle hole screen along the feed pipe 19. The other two vibration motors 8 drive the middle hole screen 6 and the fine hole screen 7 to continue screening the stone powder. The stone powder is screened multiple times and respectively collected into the first aggregate box 20 and the second aggregate box 21. The stone powder with the finest particles falls into the third aggregate box 22 at the bottom. The third aggregate box 22 can be pulled out from the third discharge port 103 by holding the handle 221 for collection.

[0023] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A grinding and screening device for stone powder processing, comprising a box body, characterized in that: The box body is provided with a connected feed hopper, the feed hopper is hinged with a cover plate, one side of the box body is provided with a first discharge port and a second discharge port, the other side of the box body is provided with a grinding outlet and a third discharge port, a dust prevention mechanism is provided on the box body, a grinding box connected with the grinding outlet is fixed on one side of the box body, and a grinding mechanism is provided in the grinding box, A screening mechanism is provided in the box, which includes a coarse-pore screen, a medium-pore screen, a fine-pore screen and three vibration motors. The coarse-pore screen, the medium-pore screen and the fine-pore screen are all fixed in the box in an inclined state from top to bottom. The output ends of the three vibration motors correspond to the coarse-pore screen, the medium-pore screen and the fine-pore screen one by one and are fixedly connected. The dustproof mechanism is located above the coarse-pore screen, and the lower ends of the medium-pore screen and the fine-pore screen are respectively provided with a first aggregate box and a second aggregate box.

2. A grinding and screening device for stone powder processing according to claim 1, characterized in that: The dust-proof mechanism includes an installation box, an exhaust fan, a connecting pipe, a suction head, a filter and a dust bag. The installation box is fixed to one side of the box body, the exhaust fan is placed in the installation box and installed on the connecting pipe, one end of the connecting pipe extends into the box body and is fixedly connected to the suction head, the filter is fixed to the suction head, and the outer end of the connecting pipe is connected and communicated with the dust bag.

3. A grinding and screening device for stone powder processing according to claim 1, characterized in that: The grinding mechanism includes a driving motor, an upper grinding stone, a lower grinding stone, a filter screen and a material guide pipe. The driving motor is fixed on the grinding box, and the output end of the driving motor extends into the grinding box and is fixedly connected to the upper grinding stone. The lower grinding stone is fixed in the grinding box. A grinding space is provided between the upper grinding stone and the lower grinding stone. A through hole is provided on the lower grinding stone. The filter screen is fixed in the through hole. The upper end of the material guide pipe is connected and communicated with the through hole of the lower grinding stone, and the lower end of the material guide pipe is connected and communicated with the box body, and the lower end of the material guide pipe is placed above the middle hole screen.

4. A grinding and screening device for stone powder processing according to claim 1, characterized in that: The first material collection box and the second material collection box are respectively disposed at the first discharge port and the second discharge side. A third material collection box is also disposed in the box body. The third material collection box is movably connected to the third discharge port of the box body, and a handle is fixed on the third material collection box.

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