Bakelite powder processing device capable of performing graded crushing

Abstract

The utility model discloses a bakelite powder processing device capable of performing graded crushing, and relates to the technical field of bakelite powder processing. A first crushing box, a first motor and a gear reducer are fixedly arranged at the upper end of the rack; a transmission shaft of the motor is connected with a connecting shaft of one primary crushing roller through the gear reducer; a return component is arranged at the lower end of the first crushing box; a second crushing box is arranged below the material returning part; a collecting disc is arranged at the bottom end of the rack. During crushing, raw materials are fed into the first crushing box from the feeding port, the raw materials are firstly preliminarily crushed through the first crushing box, in the crushing process of the first crushing box, the crushed raw materials fall into the material returning part, and large raw materials which are not thoroughly crushed are conveyed back into the first crushing box; and the raw materials which are crushed uniformly pass through the second crushing box, and the remaining raw materials are crushed more finely, so that the crushed raw materials fall into a collecting disc through the second crushing box.

Description

Technical Field

[0001] The utility model relates to the technical field of bakelite powder processing, in particular to a bakelite powder processing device capable of graded crushing. Background Art

[0002] Bakelite is the first type of plastic to be put into industrial production. Its chemical name is phenolic plastic, abbreviated as PF in English. It has high mechanical strength, good insulation, heat resistance and corrosion resistance, so it is often used to manufacture electrical materials, such as switches, lamp holders, headphones, telephone casings, instrument casings, etc., hence the name "bakelite". Bakelite powder is the powder obtained by crushing bakelite through a crushing device.

[0003] Most of the widely used bakelite powder crushing devices currently only have a first-stage crushing process. This single crushing method often leads to incomplete bakelite powder crushing and uneven particle size distribution, which in turn reduces the overall crushing qualification rate and affects production efficiency and product quality.

[0004] In the prior art, a Chinese patent with publication number CN219095614U is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: it includes a first crushing box, the bottom of which is connected to a secondary crushing box, the left and right sides of the secondary crushing box are provided with rectangular notches, and the top of the secondary crushing box is provided with a support frame. In the utility model, the bakelite powder can be multi-stage crushed by using the first crushing box and the secondary crushing box, which is easy to operate, and the graded crushing has the advantages of good crushing effect and uniform and thorough crushing; however, most of the bakelite raw materials are recycled from some discarded electrical appliances or casings, and most of them are not regular in shape. After only one-stage crushing, a part of the raw materials entering the second-stage crushing box is likely to be unevenly and incompletely crushed, so that the raw materials finally crushed are not uniform enough and the qualified rate is reduced. Utility Model Content

[0005] The utility model aims to provide a bakelite powder processing device capable of graded crushing to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] The bakelite powder processing device capable of graded crushing comprises a frame; a first crushing box, a first motor and a gear reduction box are fixedly arranged at the upper end of the frame, and a feed port is arranged at the upper end of the first crushing box; a pair of primary crushing rollers are arranged inside the first crushing box, and a first gear is fixedly connected to the connecting shaft of the pair of primary crushing rollers, and the two first gears are meshed and connected, and the motor drive shaft is connected to the connecting shaft of one of the primary crushing rollers through the gear reduction box; a return material component is arranged at the lower end of the first crushing box, and the return material component is used to screen the raw materials from the first crushing box and transmit the raw materials that are not completely crushed back to the feed port; a second crushing box is arranged below the return material component, and the second crushing box will crush the raw materials crushed from the first crushing box again; a collecting tray is arranged at the bottom end of the frame.

[0008] During the crushing process, the raw materials are fed into the first crushing box from the feed port. The raw materials are first crushed preliminarily through the first crushing box. During the crushing process in the first crushing box, the crushed raw materials fall to the return material component. There may be larger raw materials that have not been completely crushed among these raw materials. The more evenly crushed raw materials will fall from the return material component to the second crushing box. The remaining raw materials will be crushed more finely through the second crushing box. After the crushing is completed, they will fall into the collecting tray through the second crushing box; the larger raw materials that have not been completely crushed will return to the first crushing box through the return material component for re-crushing.

[0009] A further improvement of the technical solution of the utility model is that: the return material component includes a filter box, a filter tank is provided on the filter box, a first filter hole is provided on the bottom surface of the filter tank, a return material box is provided at one end of the filter tank, an opening is provided between the return material box and the filter tank and are communicated through the opening; a transmission pipe is provided at the upper end of the return material box, the transmission pipe is communicated with the return material box, an auger is provided in the transmission pipe, a filter tube is provided on the outside of the auger, the filter tube and the transmission pipe are fixedly connected and a gap is left between them; a second filter hole is provided on the side wall of the filter tube; a second motor is provided at the lower end of the filter box, and the second motor is rotatably connected to the auger; the aperture sizes of the first filter hole and the second filter hole are consistent.

[0010] The above technical scheme is adopted, in which the raw materials crushed by the first-stage crushing box will fall into the filter trough in the filter box, and the small particles crushed more evenly will fall into the second crushing box through the first filter hole, and the larger raw materials will enter the return box through the opening, and be lifted to the feed port by the auger. The second filter hole is provided on the outside of the auger, and the smaller raw materials mixed in the auger are filtered out through the second filter hole and fall from the gap between the filter tube and the transmission tube.

[0011] A further improvement of the technical solution of the utility model is that the bottom surface of the filter tank is an inclined surface.

[0012] By adopting the above technical solution, in which the bottom surface of the filter tank is set as an inclined surface, the crushed raw materials can slide to the opening by gravity, preventing larger raw materials from being blocked in the filter tank.

[0013] A further improvement of the technical solution of the utility model is that: a first pressure roller and a second pressure roller are arranged in the second crushing box, a pair of second gears are arranged at one end of the rotating shaft of the first pressure roller and the second pressure roller, one end of one of the first gears is fixedly connected to the first pulley, one end of one of the second gears is fixedly connected to the second pulley, and the first pulley and the second pulley are driven by a belt; sieve holes are opened on the bottom surface of the second crushing box, and an inclined block is arranged under the sieve holes; a discharge channel is arranged on the bottom surface of the second crushing box.

[0014] The above technical solution is adopted, in which the first and second pressing rollers are driven to rotate by belt transmission, and the raw materials are crushed by the first and second pressing rollers, so that the bakelite is crushed more thoroughly. The crushed raw materials fall through the sieve holes onto the inclined block, then slide through the inclined block to the material discharge channel, and finally fall into the collection tray.

[0015] A further improvement of the technical solution of the utility model is that: a spiral groove and a spiral convex block are provided on the first pressing roller and the second pressing roller, and the spiral convex block and the spiral groove cooperate with each other.

[0016] By adopting the above technical solution, the spiral groove and the spiral protrusion are provided, and the smaller bakelite raw materials will fall into the spiral groove, and the bakelite raw materials will be crushed more thoroughly through the pressure of the spiral protrusion.

[0017] A further improvement of the technical solution of the utility model is that electric heating plates for heating are arranged in the first crushing box and the second crushing box.

[0018] The above technical solution is adopted, in which heating plates are set. These heating plates are precisely controlled to ensure that the temperature is not too high, so as to safely and effectively heat and dry the bakelite raw materials. The key to this step is to prevent the powder adhesion phenomenon that may occur after the bakelite is crushed, so as to ensure that the crushing effect is optimal.

[0019] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0020] 1. The utility model provides a bakelite powder processing device capable of graded crushing. When crushing, the raw material is fed into the first crushing box from the feed port. The raw material is firstly crushed by the first crushing box. During the crushing process in the first crushing box, the crushed raw material falls to the return material component, and the larger raw material that is not completely crushed is returned to the first crushing box. The raw material that is crushed more evenly will fall from the return material component to the second crushing box, and the remaining raw material will be crushed more finely by the second crushing box. After the crushing is completed, it falls into the collection tray through the second crushing box.

[0021] 2. The utility model provides a bakelite powder processing device capable of graded crushing. The raw materials crushed in the first-stage crushing box will fall into the filter trough in the filter box, and small particles crushed more evenly will fall into the second crushing box through the first filter hole. Larger raw materials will enter the return box through the opening and be lifted to the feed port by the auger. A second filter hole is provided on the outside of the auger, and smaller raw materials mixed into the auger will be filtered out through the second filter hole and fall from the gap between the filter tube and the transmission tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the material return component of the utility model;

[0025] Figure 3 This is a schematic cross-sectional structural diagram of the material return component of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the second crushing box of the utility model;

[0027] Figure 5 This is a schematic cross-sectional structural diagram of the second crushing box of the utility model;

[0028] In the figure: 1. frame; 2. first crushing box; 3. first motor; 4. primary crushing roller; 5. collecting plate; 6. filter box; 7. filter trough; 8. first filter hole; 9. opening; 10. feed inlet; 11. transmission pipe; 12. auger; 13. filter tube; 14. second filter hole; 15. first pressure roller; 16. second pressure roller; 17. feed channel; 18. spiral groove; 19. spiral protrusion; 20. second crushing box. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the embodiments:

[0030] like Figure 1-5As shown, the utility model provides a bakelite powder processing device capable of graded crushing, comprising a frame 1; a first crushing box 2, a first motor 3 and a gear reduction box are fixedly provided at the upper end of the frame 1, and a feed port 10 is provided at the upper end of the first crushing box 2; a pair of primary crushing rollers 4 are provided inside the first crushing box 2, and a first gear is fixedly connected to the connecting shaft of the pair of primary crushing rollers 4, and the two first gears are meshed and connected, and the motor drive shaft is connected to the connecting shaft of one of the primary crushing rollers 4 through the gear reduction box; a return component is provided at the lower end of the first crushing box 2, and the return component is used to screen the raw materials from the first crushing box 2 and transmit the incompletely crushed raw materials back to the feed port 10; a second crushing box 20 is provided below the return component, and the second crushing box 20 crushes the raw materials crushed from the first crushing box 2 again; a collecting tray 5 is provided at the bottom end of the frame 1.

[0031] In this embodiment, when crushing, the raw material is fed into the first crushing box 2 from the feed port 10, and the raw material is first preliminarily crushed by the first crushing box 2. During the crushing process in the first crushing box 2, the crushed raw material falls to the return material component, and the larger raw material that is not completely crushed is returned to the first crushing box 2. The raw material that is crushed more evenly will fall from the return material component to the second crushing box 20, and the remaining raw material will be more finely crushed by the second crushing box 20. After the crushing is completed, it falls into the collection tray 5 through the second crushing box 20.

[0032] As shown in the figure, in the present embodiment, preferably, the return material component includes a filter box 6, a filter slot 7 is provided on the filter box 6, a first filter hole 8 is provided on the bottom surface of the filter slot 7, a return material box is provided at one end of the filter slot 7, an opening 9 is provided between the return material box and the filter slot 7 and they are communicated through the opening 9; a transmission pipe 11 is provided at the upper end of the return material box, the transmission pipe 11 is communicated with the return material box, an auger 12 is provided in the transmission pipe 11, a filter tube 13 is provided on the outside of the auger 12, the filter tube 13 and the transmission pipe 11 are fixedly connected with a gap; a second filter hole 14 is provided on the side wall of the filter tube 13; a second motor is provided at the lower end of the filter box 6, and the second motor is rotatably connected to the auger 12; the aperture sizes of the first filter hole 8 and the second filter hole 14 are consistent.

[0033] The raw materials crushed by the first-stage crushing box will fall into the filter trough 7 in the filter box 6, and the small particles that are crushed more evenly will fall into the second crushing box 20 through the first filter hole 8. The larger raw materials will enter the return box through the opening 9 and be lifted to the feed port 10 through the auger 12. The second filter hole 14 is provided on the outside of the auger 12. The smaller raw materials mixed into the auger 12 are filtered out through the second filter hole 14 and fall from the gap between the filter tube 13 and the transmission tube 11.

[0034] The bottom surface of the filter tank 7 is an inclined surface.

[0035] By setting the bottom surface of the filter tank 7 to be an inclined surface, the crushed raw materials can slide to the opening 9 by gravity, preventing larger raw materials from being blocked in the filter tank 7.

[0036] like Figure 5 As shown, preferably, a first pressing roller 15 and a second pressing roller 16 are provided in the second crushing box 20, and a pair of second gears are provided at one end of the rotating shaft of the first pressing roller 15 and the second pressing roller 16, one end of one of the first gears is fixedly connected to the first pulley, and one end of one of the second gears is fixedly connected to the second pulley, and the first pulley and the second pulley are driven by a belt; sieve holes are provided on the bottom surface of the second crushing box 20, and an inclined block is provided under the sieve holes; a discharge channel 17 is provided on the bottom surface of the second crushing box 20.

[0037] The first pressing roller 15 and the second pressing roller 16 are driven by a belt to rotate, and the raw materials are crushed by the first pressing roller 15 and the second pressing roller 16, so that the bakelite is crushed more thoroughly. The crushed raw materials fall through the sieve holes onto the inclined block, then slide through the inclined block to the material discharge channel 17, and finally fall into the collection tray 5.

[0038] like Figure 4 As shown, based on Example 1, the utility model provides a technical solution: preferably, the first pressing roller 15 and the second pressing roller 16 are provided with a spiral groove 18 and a spiral protrusion 19, and the spiral protrusion 19 and the spiral groove 18 cooperate with each other.

[0039] In this embodiment, by providing the spiral groove 18 and the spiral protrusion 19 , smaller bakelite raw materials will fall into the spiral groove 18 , and the bakelite raw materials will be crushed more thoroughly through the pressure of the spiral protrusion 19 .

[0040] like Figure 1-5 As shown, based on Example 1, the utility model provides a technical solution: preferably, electric heating plates for heating are provided in the first crushing box 2 and the second crushing box 20.

[0041] In this embodiment, heating plates are provided. These heating plates are precisely controlled to ensure that the temperature is not too high, thereby safely and effectively heating and drying the bakelite raw material. The key to this step is to prevent the bakelite from sticking to powder after pulverization, thereby ensuring that the pulverization effect is optimal.

[0042] The working principle of the bakelite powder processing device capable of graded crushing is described in detail below.

[0043] like Figure 1-5As shown, when crushing, the raw material is fed into the first crushing box 2 from the feed port 10. The raw material is first crushed by the first crushing box 2. The raw material crushed by the first crushing box will fall into the filter tank 7 in the filter box 6. The small particles that are crushed more evenly will fall into the second crushing box 20 through the first filter hole 8. The larger raw material will enter the return box through the opening 9 and be lifted to the feed port 10 through the auger 12. The outer side of the auger 12 is provided with a second filter hole 14. The smaller raw material mixed in the auger 12 is filtered out through the second filter hole 14 and falls from the gap between the filter tube 13 and the transmission tube 11. The first pressing roller 15 and the second pressing roller 16 are driven to rotate by the belt transmission, and the raw material is crushed by the first pressing roller 15 and the second pressing roller 16, so that the bakelite is crushed more thoroughly. The crushed raw material falls onto the inclined block through the sieve hole, then slides to the discharge channel 17 through the inclined block, and finally falls into the collection tray 5.

[0044] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A bakelite powder processing device capable of graded crushing, comprising a frame (1); characterized in that: A first crushing box (2), a first motor (3) and a gear reducer are fixedly provided at the upper end of the frame (1); a feed port (10) is provided at the upper end of the first crushing box (2); a pair of primary crushing rollers (4) are provided inside the first crushing box (2); a first gear is fixedly connected to the connecting shafts of the pair of primary crushing rollers (4); the two first gears are meshedly connected, and the motor drive shaft is connected to the connecting shaft of one of the primary crushing rollers (4) through the gear reducer; a return material component is provided at the lower end of the first crushing box (2), and the return material component is used to screen the raw materials from the first crushing box (2) and transmit the raw materials that are not completely crushed back to the feed port (10); a second crushing box (20) is provided below the return material component, and the second crushing box (20) crushes the raw materials crushed from the first crushing box (2) again; a collecting tray (5) is provided at the bottom end of the frame (1).

2. The bakelite powder processing device capable of graded crushing according to claim 1, characterized in that: The return material component comprises a filter box (6), a filter slot (7) is provided on the filter box (6), a first filter hole (8) is provided on the bottom surface of the filter slot (7), a return material box is provided at one end of the filter slot (7), an opening (9) is provided between the return material box and the filter slot (7), and the return material box and the filter slot (7) are communicated with each other through the opening (9); a transmission pipe (11) is provided at the upper end of the return material box, the transmission pipe (11) and the return material box are communicated with each other, an auger (12) is provided inside the transmission pipe (11), a filter tube (13) is provided outside the auger (12), the filter tube (13) and the transmission pipe (11) are fixedly connected with each other and a gap is left; a second filter hole (14) is provided on the side wall of the filter tube (13); a second motor is provided at the lower end of the filter box (6), and the second motor is rotatably connected to the auger (12).

3. The bakelite powder processing device capable of graded crushing according to claim 2, characterized in that: The first filter hole (8) and the second filter hole (14) have the same pore size.

4. The bakelite powder processing device capable of graded crushing according to claim 3 is characterized in that: A first pressing roller (15) and a second pressing roller (16) are provided in the second crushing box (20); a pair of second gears are provided at one end of the rotating shafts of the first pressing roller (15) and the second pressing roller (16); one end of one of the first gears is fixedly connected to a first belt pulley, and one end of one of the second gears is fixedly connected to a second belt pulley, and a belt is used to transmit power between the first belt pulley and the second belt pulley; a sieve hole is provided on the bottom surface of the second crushing box (20), and an inclined block is provided below the sieve hole; and a material discharge channel (17) is provided on the bottom surface of the second crushing box (20).

5. The bakelite powder processing device capable of graded crushing according to claim 4, characterized in that: The first pressing roller (15) and the second pressing roller (16) are provided with a spiral groove (18) and a spiral convex block (19), and the spiral convex block (19) and the spiral groove (18) cooperate with each other.

6. The bakelite powder processing device capable of graded crushing according to claim 5, characterized in that: The bottom surface of the filter tank (7) is an inclined surface.

7. The bakelite powder processing device capable of graded crushing according to claim 1, characterized in that: The first crushing box (2) and the second crushing box (20) are provided with electric heating plates for heating.

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