Feeding device for crushing silicon powder

Abstract

The feeding device comprises a crusher, the top of the crusher is fixedly connected with a supporting plate, the right side of the supporting plate is fixedly connected with a hopper, the top of the crusher is fixedly connected with a box body, a feeding port in the top of the crusher is communicated with the bottom of an inner cavity of the box body, and the right side of the box body is communicated with a feeding pipe. The left end of the feeding pipe is located in the box body, a feeding mechanism is arranged in the feeding pipe, a discharging port in the bottom of the hopper communicates with the feeding pipe, and the left side of the supporting plate is fixedly connected with a gas tank. Oxygen is prevented from entering the crusher together, the hidden danger that silicon powder in the crusher is flammable and explosive during feeding of the crusher is avoided, the baffle is driven by the electric push rod, the bottom of the box body is conveniently blocked before feeding, and when silica is fed into the box body, the oxygen cannot directly enter the crusher.

Description

Technical Field

[0001] The utility model belongs to the technical field of silicon powder crushing, and particularly relates to a feeding device for silicon powder crushing. Background Art

[0002] Silicon powder is prepared from silicon blocks as raw materials and is produced through crushing. The crushing methods include extrusion crushing or impact crushing to crush large pieces of silica into powder. The existing feeding method for silica crushing equipment cannot isolate oxygen. Silicon powder is explosive dust. During the crushing process, silicon powder permeates the equipment. If air enters the equipment during feeding, oxygen will be present in the equipment, thus posing a flammable and explosive hazard. In order to ensure safe feeding of the crushing equipment, a feeding device for silicon powder crushing is proposed, which aims to isolate oxygen when silica enters the equipment and ensure the safe production of silicon powder. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a feeding device for silicon powder crushing, which adopts nitrogen to squeeze out oxygen, so that when the silica enters the crusher, oxygen is prevented from entering together, thereby eliminating the hidden danger of flammable and explosive silicon powder in the crusher when the crusher is fed.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A feeding device for crushing silicon powder comprises a crusher, the top of the crusher is fixedly connected to a support plate, the right side of the support plate is fixedly connected to a hopper, the top of the crusher is fixedly connected to a box body, the feed port at the top of the crusher is communicated with the bottom of an inner cavity of the box body, the right side of the box body is connected to a feeding pipe, the left end of the feeding pipe is located in the box body, a feeding mechanism is provided in the feeding pipe, the discharge port at the bottom of the hopper is communicated with the feeding pipe, the left side of the support plate is fixedly connected to a gas tank, the gas outlet of the gas tank is connected to an air pipe, the end of the air pipe away from the gas tank is communicated with the top of the inner cavity of the box body, the top of the box body is fixedly connected to an electric push rod, the telescopic end of the electric push rod is fixedly connected to a baffle located in the box body, a feed sealing mechanism is provided on the right side of the inner cavity of the box body, and an air outlet mechanism is provided at the bottom of the inner cavity of the box body.

[0006] Furthermore, the feeding mechanism includes a motor, a rotating shaft and a spiral conveying blade. The right end of the feeding tube is fixedly connected to the motor, the feeding tube is rotatably connected to the rotating shaft, the output shaft of the motor is fixedly connected to the rotating shaft, and the outer side of the rotating shaft is fixedly connected to the spiral conveying blade.

[0007] Furthermore, the feed sealing mechanism includes a guide rod, a fixed plate, a spring, a sealing plate and a sealing cover. Two guide rods are fixedly connected to the right side of the inner wall of the box body, and the two guide rods are symmetrically distributed on the upper and lower sides of the left end opening of the feeding tube. The left end of the guide rod is fixedly connected to the fixed plate, and a spring is sleeved on the guide rod. The left end of the spring is fixedly connected to the fixed plate, and the right end of the spring is fixedly connected to the sealing plate. The sealing plate is slidably connected to the two guide rods, and the right side of the sealing plate is fixedly connected to a sealing cover, which corresponds to the feeding tube, and the groove size on the right side of the sealing cover is adapted to the diameter of the feeding tube.

[0008] Furthermore, the air outlet mechanism includes an air outlet channel and an air valve. The bottom of the inner cavity of the box body is provided with an air outlet channel, and the left side of the box body is fixedly connected with an air valve located at the opening of the air outlet channel.

[0009] Furthermore, the top of the baffle is configured as a curved surface.

[0010] Furthermore, a protective net is fixedly connected above the air outlet channel.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The silica in the hopper is transported to the box through a conveying pipe and then cached. With the help of gas tanks and air pipes, nitrogen is used to squeeze out oxygen, so that when the silica enters the crusher, oxygen is prevented from entering together. This prevents the silicon powder in the crusher from generating flammable and explosive hazards when the crusher is fed. The baffle is driven by an electric push rod to block the bottom of the box before feeding, so that when the silica is fed into the box, oxygen will not directly enter the crusher.

[0013] 2. The rotatable spiral conveying blade in the feeding mechanism facilitates the pushing of silica into the box body. The spring in the feeding sealing mechanism pushes the sealing plate, which does not affect the normal feeding of silica. After the feeding into the box body, the feeding pipe can be blocked to prevent air from entering the box body from the feeding pipe. The opening and closing of the air valve in the air outlet structure can allow the gas to be discharged from the air outlet channel during the extrusion of oxygen, and can keep the box body airtight after the extrusion of oxygen to prevent air from entering the box body from the air outlet channel.

[0014] 3. When the baffle with curved surface is lifted upward and silica is added to the crusher, the silica can be prevented from accumulating on the baffle. The protective net can be used to prevent silica from entering the air outlet channel and causing channel blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0019] In the figure: 1 crusher, 2 support plate, 3 hopper, 4 box, 5 feeding pipe, 6 gas tank, 7 gas pipe, 8 electric push rod, 9 baffle, 10 motor, 11 rotating shaft, 12 spiral conveying blade, 13 guide rod, 14 fixing plate, 15 spring, 16 sealing plate, 17 sealing cover, 18 air outlet channel, 19 air valve, 20 protective net. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0022] See attached Figure 1-4 As shown, a feeding device for crushing silicon powder comprises a crusher 1, a support plate 2 is fixedly connected to the top of the crusher 1, a hopper 3 is fixedly connected to the right side of the support plate 2, a box body 4 is fixedly connected to the top of the crusher 1, a feed port at the top of the crusher 1 is communicated with the bottom of the inner cavity of the box body 4, a feeding pipe 5 is connected to the right side of the box body 4, the left end of the feeding pipe 5 is located in the box body 4, a feeding mechanism is arranged in the feeding pipe 5, a discharge port at the bottom of the hopper 3 is communicated with the feeding pipe 5, a gas tank 6 is fixedly connected to the left side of the support plate 2, an air pipe 7 is connected at the air outlet of the gas tank 6, an end of the air pipe 7 away from the gas tank 6 is communicated with the top of the inner cavity of the box body 4, an electric push rod 8 is fixedly connected to the top of the box body 4, the telescopic end of the electric push rod 8 is fixedly connected to a baffle 9 located in the box body 4, a feed sealing mechanism is arranged on the right side of the inner cavity of the box body 4, and an air outlet mechanism is arranged at the bottom of the inner cavity of the box body 4.

[0023] The feeding mechanism includes a motor 10, a rotating shaft 11 and a spiral conveying blade 12. The right end of the feeding tube 5 is fixedly connected to the motor 10, the feeding tube 5 is rotatably connected with the rotating shaft 11, the output shaft of the motor 10 is fixedly connected to the rotating shaft 11, and the outer side of the rotating shaft 11 is fixedly connected to the spiral conveying blade 12.

[0024] The feed sealing mechanism includes a guide rod 13, a fixed plate 14, a spring 15, a sealing plate 16 and a sealing cover 17. Two guide rods 13 are fixedly connected to the right side of the inner wall of the box body 4. The two guide rods 13 are symmetrically distributed on the upper and lower sides of the left end opening of the feeding tube 5. The left end of the guide rod 13 is fixedly connected to the fixed plate 14. A spring 15 is sleeved on the guide rod 13. The left end of the spring 15 is fixedly connected to the fixed plate 14. The right end of the spring 15 is fixedly connected to the sealing plate 16. The sealing plate 16 is slidably connected to the two guide rods 13. A sealing cover 17 is fixedly connected to the right side of the sealing plate 16. The sealing cover 17 corresponds to the feeding tube 5, and the size of the groove on the right side of the sealing cover 17 is adapted to the diameter of the feeding tube 5.

[0025] The air outlet mechanism includes an air outlet channel 18 and an air valve 19 . The air outlet channel 18 is opened at the bottom of the inner cavity of the box body 4 , and the air valve 19 located at the opening of the air outlet channel 18 is fixedly connected to the left side of the box body 4 .

[0026] The top of the baffle 9 is configured as a curved surface.

[0027] A protective net 20 is fixedly connected above the air outlet channel 18 .

[0028] Working principle: It should be noted that, in the present invention, only the feeding method of the silica crushing equipment is improved, and the crusher 1 does not limit the crushing method of silica. Before feeding, the electric push rod 8 is started in advance to drive the baffle 9 downward until the baffle 9 abuts against the bottom of the inner cavity of the box 4. At this time, the baffle 9 blocks the opening at the bottom of the box 4 to prevent the gas in the box 4 from entering the crusher 1. The hopper 3 is used to store silica. When feeding, the motor 10 is started to drive the rotating shaft 11 to rotate. The rotating shaft 11 drives the spiral conveying blade 12 to rotate. After the silica in the hopper 3 falls into the feeding pipe 5, it is pushed by the rotating spiral conveying blade 12 to move toward the box 4. When the moving silica reaches the opening at the left end of the feeding pipe 5, it pushes the sealing cover 17. The sealing cover 17 drives the sealing plate 16 to slide to the left along the track of the guide rod 13 and squeezes the spring 15. Then the silica is fed into the box 4. In this process, the outside air passes through the feeding pipe 5 from the hopper 3 and enters the box 4 together with the silica. After the feeding is finished, the motor 10 is turned off. At this time, the silica no longer continues to enter the box body 4 from the left end of the feeding pipe 5, and the sealing cover 17 is no longer pushed by the silica. The spring 15 pushes the sealing plate 16 to move, and the sealing plate 16 drives the sealing cover 17 to reset. The sealing cover 17 is buckled to the left end of the feeding pipe 5, blocking the left end of the feeding pipe 5 to prevent air from continuing to enter the box body 4 from the feeding pipe 5. The compressed nitrogen is stored in the gas tank 6. The valve on the gas tank 6 is opened, and the nitrogen under positive pressure in the gas tank 6 is discharged from the gas pipe 7. Enter the box 4 and open the air valve 19 at the same time. By taking advantage of the fact that the density of nitrogen is lower than that of oxygen, the nitrogen gathers and increases from the top of the inner cavity of the box 4, gradually pressing the oxygen downward and squeezing it out of the box 4 from the air outlet channel 18. Then the nitrogen is turned off and the air valve 19 is closed. At this time, the box 4 is in an oxygen-free state, and the electric push rod 8 drives the baffle 9 to push up and reset. The silica in the box 4 falls into the crusher 1 due to gravity and is crushed. This completes one feeding work, and then it can be fed again. The above process can be repeated.

[0029] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A feeding device for crushing silicon powder, comprising a crusher (1), a support plate (2) fixedly connected to the top of the crusher (1), a hopper (3) fixedly connected to the right side of the support plate (2), characterized in that: The top of the crusher (1) is fixedly connected to a box (4); the feed port at the top of the crusher (1) is in communication with the bottom of the inner cavity of the box (4); the right side of the box (4) is in communication with a feeding pipe (5); the left end of the feeding pipe (5) is located in the box (4); a feeding mechanism is provided in the feeding pipe (5); the discharge port at the bottom of the hopper (3) is in communication with the feeding pipe (5); the left side of the support plate (2) is fixedly connected to a gas tank (6); the gas outlet of the gas tank (6) is in communication with a gas pipe (7); the end of the gas pipe (7) away from the gas tank (6) is in communication with the top of the inner cavity of the box (4); the top of the box (4) is fixedly connected to an electric push rod (8); the telescopic end of the electric push rod (8) is fixedly connected to a baffle (9) located in the box (4); the right side of the inner cavity of the box (4) is provided with a feeding sealing mechanism; the bottom of the inner cavity of the box (4) is provided with a gas outlet mechanism.

2. A feeding device for crushing silicon powder according to claim 1, characterized in that: The feeding mechanism comprises a motor (10), a rotating shaft (11) and a spiral conveying blade (12); the right end of the feeding pipe (5) is fixedly connected to the motor (10); the feeding pipe (5) is rotatably connected to the rotating shaft (11); the output shaft of the motor (10) is fixedly connected to the rotating shaft (11); and the outer side of the rotating shaft (11) is fixedly connected to the spiral conveying blade (12).

3. A feeding device for crushing silicon powder according to claim 1, characterized in that: The feed sealing mechanism comprises a guide rod (13), a fixing plate (14), a spring (15), a sealing plate (16) and a sealing cover (17). Two guide rods (13) are fixedly connected to the right side of the inner wall of the box body (4). The two guide rods (13) are symmetrically distributed on the upper and lower sides of the left end opening of the feed pipe (5). The left end of the guide rod (13) is fixedly connected to the fixing plate (14). A spring (15) is sleeved on the guide rod (13). The left end of the spring (15) is fixedly connected to the fixing plate (14). The right end of the spring (15) is fixedly connected to the sealing plate (16). The sealing plate (16) is slidably connected to the two guide rods (13). The right side of the sealing plate (16) is fixedly connected to the sealing cover (17). The sealing cover (17) corresponds to the feed pipe (5), and the size of the groove on the right side of the sealing cover (17) is adapted to the diameter of the feed pipe (5).

4. A feeding device for crushing silicon powder according to claim 1, characterized in that: The air outlet mechanism comprises an air outlet channel (18) and an air valve (19); the bottom of the inner cavity of the box body (4) is provided with an air outlet channel (18); and the left side of the box body (4) is fixedly connected with an air valve (19) located at the opening of the air outlet channel (18).

5. The feeding device for crushing silicon powder according to claim 1, characterized in that: The top of the baffle (9) is configured as a curved surface.

6. A feeding device for crushing silicon powder according to claim 4, characterized in that: A protective net (20) is fixedly connected above the air outlet channel (18).

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