Phenolic plastic high-efficiency mixing machine

Abstract

The utility model discloses a kind of phenolic plastic high-efficiency mixing machines, belong to phenolic plastic processing technical field.It includes stirring tank, support frame, stirring tank is fixed on support frame, top is equipped with driving mechanism, and is equipped with feed pipe, stirring tank bottom is equipped with taper section that diameter is gradually reduced from top to bottom, conveying cylinder is fixed in stirring tank, conveying cylinder top opening, lower end passes through taper section, bottom is provided with discharge gate, stirring tank is rotatably installed with lifting screw shaft, its lower end is located in conveying cylinder and is in close contact with conveying cylinder inner wall, main shaft lower end is rotatably installed in conveying cylinder bottom inner wall, upper end is connected with driving mechanism power, conveying cylinder wall is opened with several feed ports, main shaft outer wall is fixed with L-shaped linkage rod, linkage rod is fixed with several stirring rods, support frame is equipped with discharging mechanism.The utility model effectively realizes material three-dimensional circulation mixing, improves mixing uniformity and mixing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of phenolic plastic processing technology and relates to a high-efficiency phenolic plastic mixer. Background Technology

[0002] Phenolic plastics are one of the commonly used non-metallic materials in non-standard equipment. Phenolic plastics have abundant raw material sources, simple synthesis process, low price, and excellent product performance. They are the world's largest thermosetting plastics. Phenolic plastics are made by mixing powdered phenolic resin with sawdust, asbestos, or clay, and then pressing the mixture into finished products in a furnace at high temperature.

[0003] In actual production, the above-mentioned raw materials are usually added to the mixing tank in sequence or all at once according to the ratio. The rotation of the mixing paddle applies mechanical shearing and friction to the materials to achieve preliminary mixing of the components on a macroscopic scale, so as to provide a uniform mixture for subsequent hot pressing molding.

[0004] However, existing technologies have the following shortcomings:

[0005] Existing mixers rely on employees to pour raw materials in sequentially, which are then mixed by rotating a stirring paddle. Due to the significant differences in particle size and density of raw materials such as phenolic resin powder, wood flour, and mineral fillers, the one-time feeding method easily leads to stratification or agglomeration in the early stages of mixing. The denser fillers tend to settle at the bottom of the container, while the less dense resin powder floats on the top, resulting in uneven mixing. Furthermore, existing mixing equipment mainly relies on the mechanical agitation of the stirring paddle to achieve dispersion, resulting in a single mixing method, low mixing quality, and low efficiency. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency phenolic plastic mixer to solve the technical problems of low efficiency and poor mixing quality in the mixing process of phenolic plastic raw materials.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-efficiency phenolic plastic mixer includes a mixing tank and a support frame. The mixing tank is fixed on the support frame, and a drive mechanism is installed on the top of the mixing tank. A feed pipe is provided on the mixing tank. The mixing tank is characterized in that the bottom of the mixing tank is provided with a tapered section with a gradually decreasing diameter from top to bottom. A conveying cylinder is fixed inside the mixing tank. The top of the conveying cylinder is provided with an opening, the lower end passes through the tapered section, and the bottom of the conveying cylinder is provided with a discharge port.

[0009] A lifting screw shaft is rotatably installed inside the mixing tank. Its lower end is located inside the conveying cylinder and is in contact with the inner wall of the conveying cylinder. The lower end of the main shaft of the lifting screw shaft is rotatably installed on the inner wall of the bottom of the conveying cylinder. The upper end of the main shaft extends to the outside of the top of the mixing tank and is powered by the drive mechanism. The conveying cylinder has several inlets. An L-shaped linkage rod located inside the mixing tank is fixed to the outer wall of the main shaft of the lifting screw shaft. Several stirring rods are fixed on the linkage rod. The support frame is equipped with a feeding mechanism for sealing and opening the feeding port.

[0010] The lifting screw shaft is used to lift the material entering the bottom of the conveying cylinder through the feed inlet and throw it out from the top opening of the conveying cylinder when it rotates, so as to avoid the accumulation of materials with different densities in layers. The linkage rod and stirring rod rotate with the main shaft to assist in stirring the thrown material.

[0011] By setting up a conical section, a conveying cylinder, and a lifting screw, and by having the main shaft of the lifting screw simultaneously drive the lifting screw, the L-shaped linkage rod, and the stirring rod to rotate, a combined action of "forced lifting from the bottom, centrifugal ejection from the top, and stirring-assisted mixing" is achieved. The lifting screw is close to the inner wall of the conveying cylinder, which can convey the heavy material deposited at the bottom of the conical section upwards. After being ejected from the top opening, it is remixed with the light material, effectively solving the stratification problem caused by density differences and improving the uniformity of mixing. At the same time, the stirring action of the stirring rod further enhances the dispersion of materials and improves the overall mixing efficiency.

[0012] Furthermore, the drive mechanism includes a stirring motor, a driving pulley, a driven pulley, and a transmission belt. A mounting plate is fixed to the side wall of the mixing tank, the stirring motor is fixed to the mounting plate, the driving pulley is coaxially fixed to the output shaft of the stirring motor, the driven pulley is coaxially fixed to the end of the main shaft of the lifting screw shaft that extends out of the mixing tank, and the transmission belt is sleeved between the driving pulley and the driven pulley.

[0013] Furthermore, the feeding mechanism includes a feeding cylinder, a fixing plate, and a sealing block. The feeding cylinder is fixed on the support frame, the fixing plate is fixedly connected to the telescopic end of the feeding cylinder, the sealing block is fixed on the upper end of the fixing plate, one end of the feeding port passes through the conveying cylinder, and the sealing block can be inserted forward into the feeding port and block the feeding port.

[0014] The sealing block can be embedded forward into the discharge port to maintain a seal during the mixing process and prevent material leakage. After mixing is completed, the discharge cylinder drives the fixed plate and sealing block to move backward, quickly opening the discharge port and achieving rapid material discharge.

[0015] Furthermore, a hopper is fixed to the feed end of the feed pipe.

[0016] Furthermore, the linkage rod consists of a connecting rod and a scraper. One end of the connecting rod is fixedly connected to the outer wall of the main shaft of the lifting screw shaft. The scraper is vertically fixed on the connecting rod, and several stirring rods are fixed on one side of the scraper. The outer wall of the scraper is in contact with the inner wall of the mixing tank.

[0017] By setting the linkage rod as a combination structure of a connecting rod and a scraper, and making the outer wall of the scraper close to the inner wall of the mixing tank, the scraping function of the inner wall of the mixing tank is realized. During the mixing process, the scraper rotates with the main shaft, which can scrape off the material adhering to the tank wall and re-participate in the mixing.

[0018] Furthermore, a feeding plate is fixed to the bottom of the scraper, and the bottom wall of the feeding plate is in contact with the inner bottom wall of the conical section.

[0019] Furthermore, a connecting plate is fixed to the outer wall of the conveying cylinder. The connecting plate is located on the outer side of the bottom of the mixing tank and is fixedly connected to the bottom of the mixing tank by bolts.

[0020] The beneficial effects of this utility model are as follows:

[0021] This invention features a conical section at the bottom of a mixing tank, a fixed conveying cylinder inside the tank, and a rotating lifting screw shaft. As the main shaft of the lifting screw shaft rotates under the drive mechanism, it forcibly lifts the material deposited at the bottom through the inlet on the conveying cylinder wall and throws it outwards from the top opening of the conveying cylinder. This creates a bottom-to-top and top-to-bottom circulating flow of the material within the tank, effectively preventing early stratification and sedimentation caused by differences in material density. Simultaneously, the main shaft drives the L-shaped linkage rod and stirring rod to rotate synchronously, providing auxiliary stirring and dispersion of the thrown-out material. This synergistic effect of mechanical lifting and mechanical stirring achieves multi-mode composite mixing.

[0022] This invention significantly improves the mixing uniformity and efficiency of various raw materials in phenolic plastics, and solves the problems of existing equipment having a single mixing method, easy stratification, and low mixing quality. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0025] Figure 3 This is a side view of an embodiment of the present utility model;

[0026] Figure 4 This is a top view of an embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the conveying cylinder according to an embodiment of the present utility model;

[0028] Figure 6 This is a bottom view of the conveyor cylinder according to an embodiment of the present utility model;

[0029] Figure 7 This is a schematic diagram of the assembly structure of the fixing plate and the two sealing blocks according to an embodiment of the present utility model;

[0030] Figure 8 This is an embodiment of the present utility model. Figure 2 Enlarged view of point A in the middle.

[0031] Explanation of reference numerals in the attached drawings: 1. Mixing tank; 2. Support frame; 3. Feed pipe; 4. Conical section; 5. Conveying cylinder; 6. Discharge port; 7. Lifting screw shaft; 8. Feed port; 9. Linkage rod; 10. Mixing rod; 11. Mixing motor; 12. Driving pulley; 13. Driven pulley; 14. Transmission belt; 15. Mounting plate; 16. Discharge cylinder; 17. Fixing plate; 18. Sealing block; 19. Discharge hopper; 20. Connecting rod; 21. Scraper; 22. Discharge plate; 23. Connecting plate. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] like Figure 1-5 As shown in Figure 8, a high-efficiency phenolic plastic mixer includes a mixing tank 1 and a support frame 2. The mixing tank 1 is fixed on the support frame 2. A drive mechanism is installed on the top of the mixing tank 1. The mixing tank 1 is provided with a feed pipe 3. A hopper 19 is fixed at the feed end of the feed pipe 3. The bottom of the mixing tank 1 is provided with a tapered section 4 with a gradually decreasing diameter from top to bottom. A conveying cylinder 5 is fixed inside the mixing tank 1. The top of the conveying cylinder 5 is provided with an opening, and the lower end passes through the tapered section 4. A discharge port 6 is provided at the bottom of the conveying cylinder 5. A connecting plate 23 is fixed on the outer wall of the conveying cylinder 5. The connecting plate 23 is located on the outside of the bottom of the mixing tank 1. The connecting plate 23 is fixedly connected to the bottom of the mixing tank 1 by bolts.

[0034] A lifting screw shaft 7 is rotatably installed inside the mixing tank 1. The lifting screw shaft 7 consists of a main shaft and spiral blades. Its lower end is located inside the conveying cylinder 5 and is in contact with the inner wall of the conveying cylinder 5. The lower end of the main shaft of the lifting screw shaft 7 is rotatably installed on the bottom inner wall of the conveying cylinder 5. The outer wall of the portion of the spiral blades located inside the conveying cylinder 5 is in contact with the inner wall of the conveying cylinder 5. The spiral blades extend to the outside of the conveying cylinder 5. The upper end of the main shaft extends to the outside of the top of the mixing tank 1 and is poweredly connected to the drive mechanism. The conveying cylinder 5 has several feed ports 8. An L-shaped linkage rod 9 located inside the mixing tank 1 is fixed to the outer wall of the main shaft of the lifting screw shaft 7. Several stirring rods 10 are fixed on the linkage rod 9. The support frame 2 is provided with a feeding mechanism for sealing and opening the discharge port 6.

[0035] The lifting screw shaft 7 is used to lift the material entering the bottom of the conveying cylinder 5 through the feed port 8 and throw it out from the top opening of the conveying cylinder 5 when it rotates, so as to avoid the accumulation of materials with different densities in layers. The linkage rod 9 and the stirring rod 10 rotate with the main shaft to assist in stirring the thrown material.

[0036] like Figure 2-7 As shown, the drive mechanism includes a stirring motor 11, a driving pulley 12, a driven pulley 13, and a transmission belt 14. A mounting plate 15 is fixed to the side wall of the mixing tank 1. The stirring motor 11 is fixed on the mounting plate 15. The driving pulley 12 is coaxially fixed on the output shaft of the stirring motor 11. The driven pulley 13 is coaxially fixed on the end of the main shaft of the lifting screw shaft 7 that extends out of the mixing tank 1. The transmission belt 14 is sleeved between the driving pulley 12 and the driven pulley 13.

[0037] The feeding mechanism includes a feeding cylinder 16, a fixing plate 17, and a sealing block 18. The feeding cylinder 16 is fixed on the support frame 2. The fixing plate 17 is fixedly connected to the telescopic end of the feeding cylinder 16. The sealing block 18 is fixed on the upper end of the fixing plate 17. One end of the feeding port 6 passes through the conveying cylinder 5. The sealing block 18 can be inserted forward into the feeding port 6 and block the feeding port 6.

[0038] like Figure 2 , 7As shown, the linkage 9 consists of a connecting rod 20 and a scraper 21. One end of the connecting rod 20 is fixedly connected to the outer wall of the main shaft of the lifting screw shaft 7. The scraper 21 is vertically fixed on the connecting rod 20. Several stirring rods 10 are fixed on one side of the scraper 21. The outer wall of the scraper 21 is in contact with the inner wall of the mixing tank 1. By setting the linkage 9 as a combination structure of the connecting rod 20 and the scraper 21, and by making the outer wall of the scraper 21 in contact with the inner wall of the mixing tank 1, the scraping function of the inner wall of the mixing tank 1 is realized. During the mixing process, the scraper 21 rotates with the main shaft, which can scrape off the material adhering to the tank wall and re-participate in the mixing. A feed plate 22 is fixed at the bottom of the scraper 21. The bottom wall of the feed plate 22 is in contact with the inner bottom wall of the conical section 4. By fixing the feed plate 22 at the bottom of the scraper 21 and making the bottom wall of the feed plate 22 in contact with the inner bottom wall of the conical section 4, the forced pushing of the material at the bottom of the conical section 4 is realized. When the lifting screw shaft 7 is working, the discharge plate 22 rotates with the scraper 21, which can push the material deposited at the bottom of the conical section 4 to the feed port 8 of the conveying cylinder 5, ensuring that the bottom material can be lifted in time and participate in the circulation, avoiding the accumulation of material in the bottom dead corner, and further improving the mixing uniformity and discharge thoroughness.

[0039] The specific operation method of this utility model is as follows:

[0040] Mixed stage

[0041] The operator feeds phenolic resin powder, wood flour, mineral fillers, etc. into the mixing tank 1 sequentially or simultaneously from the feed hopper 19 according to the specified ratio. The materials fall into the bottom of the mixing tank 1 through the feed pipe 3. The drive mechanism is started, and the stirring motor 11 drives the driven pulley 13 to rotate through the drive pulley 12 and the transmission belt 14, thereby driving the lifting screw shaft 7 to rotate.

[0042] As the lifting screw shaft 7 rotates, its lower end is located inside the conveying cylinder 5 and is in contact with the inner wall of the conveying cylinder 5. Its spiral blades forcefully lift the material that enters the bottom of the conveying cylinder 5 through the feed inlet 8 on the cylinder wall upward. After the material rises along the inner wall of the conveying cylinder 5 to the top opening, it is thrown outward under the action of centrifugal force and scattered in the upper space inside the mixing tank 1.

[0043] At the same time, the main shaft of the lifting screw shaft 7 drives the linkage rod 9 and the stirring rod 10 fixed on the linkage rod 9 to rotate synchronously. As the material is thrown out and falls under the action of gravity, it is subjected to the mechanical stirring action of the stirring rod 10, and further mixes and disperses with the original material in the tank.

[0044] The linkage 9 consists of a connecting rod 20 and a scraper 21, with the outer wall of the scraper 21 abutting against the inner wall of the mixing tank 1. As the scraper 21 rotates with the main shaft, it scrapes away the material adhering to the tank wall and re-involves it in the mixing process. A discharge plate 22 is fixed to the bottom of the scraper 21, with its bottom wall abutting against the inner bottom wall of the conical section 4. As the discharge plate 22 rotates with the scraper 21, it forcibly pushes the material deposited at the bottom of the conical section 4 towards the inlet 8 of the conveying cylinder 5, ensuring that the bottom material can be lifted in time and participate in the circulation, thus preventing the accumulation of bottom material.

[0045] Through the combined effects of "forced bottom lifting, centrifugal ejection from the top, stirring-assisted mixing, tank wall scraping, and bottom pushing", the material forms a continuous and three-dimensional circulating flow in the mixing tank 1, and components of different densities are fully mixed, avoiding stratification and agglomeration.

[0046] Material discharge stage

[0047] After mixing, the discharge cylinder 16 is driven to retract, causing the telescopic end of the discharge cylinder 16 to move backward, driving the fixed plate 17 and the sealing block 18 fixed to the upper end of the fixed plate 17 to move backward. The sealing block 18 disengages from the discharge port 6 at the bottom of the conveying cylinder 5, and the discharge port 6 opens, allowing the uniformly mixed material to be discharged from the discharge port 6. During the discharge process, the stirring motor 11 is driven to reverse. The stirring motor 11 drives the lifting screw shaft 7 to rotate in the opposite direction through the driving pulley 12, the transmission belt 14, and the driven pulley 13, accelerating the discharge of material and preventing excessive material from accumulating in the mixing tank 1. During the discharge process, the scraper 21 and the discharge plate 22 continue to rotate with the main shaft of the lifting screw shaft 7, pushing the residual material on the inner wall of the mixing tank 1 and the bottom wall of the conical section 4 toward the discharge port, ensuring thorough discharge and reducing material residue.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-efficiency phenolic plastic mixer, comprising a mixing tank (1) and a support frame (2), wherein the mixing tank (1) is fixed on the support frame (2), a drive mechanism is installed on the top of the mixing tank (1), and a feed pipe (3) is provided on the mixing tank (1), characterized in that, The bottom of the mixing tank (1) is provided with a tapered section (4) whose diameter gradually decreases from top to bottom. A conveying cylinder (5) is fixed inside the mixing tank (1). The top of the conveying cylinder (5) is provided with an opening, and the bottom end passes through the tapered section (4). The bottom of the conveying cylinder (5) is provided with a discharge port (6). A lifting screw shaft (7) is rotatably installed inside the mixing tank (1). Its lower end is located inside the conveying cylinder (5) and is close to the inner wall of the conveying cylinder (5). The lower end of the main shaft of the lifting screw shaft (7) is rotatably installed on the bottom inner wall of the conveying cylinder (5). The upper end of the main shaft extends to the outside of the top of the mixing tank (1) and is powered by the drive mechanism. The conveying cylinder (5) has several feed inlets (8) on its wall. An L-shaped linkage rod (9) located inside the mixing tank (1) is fixed on the outer wall of the main shaft of the lifting screw shaft (7). Several stirring rods (10) are fixed on the linkage rod (9). The support frame (2) is provided with a feeding mechanism for sealing and opening the feeding port (6).

2. The high-efficiency phenolic plastic mixer according to claim 1, characterized in that, The drive mechanism includes a stirring motor (11), a driving pulley (12), a driven pulley (13), and a transmission belt (14). A mounting plate (15) is fixed to the side wall of the mixing tank (1). The stirring motor (11) is fixed on the mounting plate (15). The driving pulley (12) is coaxially fixed on the output shaft of the stirring motor (11). The driven pulley (13) is coaxially fixed on the end of the main shaft of the lifting screw shaft (7) that extends out of the mixing tank (1). The transmission belt (14) is sleeved between the driving pulley (12) and the driven pulley (13).

3. The high-efficiency phenolic plastic mixer according to claim 1, characterized in that, The feeding mechanism includes a feeding cylinder (16), a fixing plate (17), and a sealing block (18). The feeding cylinder (16) is fixed on the support frame (2). The fixing plate (17) is fixedly connected to the telescopic end of the feeding cylinder (16). The sealing block (18) is fixed on the upper end of the fixing plate (17). One end of the feeding port (6) passes through the conveying cylinder (5). The sealing block (18) can be inserted forward into the feeding port (6) and block the feeding port (6).

4. The high-efficiency phenolic plastic mixer according to claim 1, characterized in that, The feed pipe (3) has a feed hopper (19) fixed at its feed end.

5. The high-efficiency phenolic plastic mixer according to claim 1, characterized in that, The linkage rod (9) consists of a connecting rod (20) and a scraper (21). One end of the connecting rod (20) is fixedly connected to the outer wall of the main shaft of the lifting screw shaft (7). The scraper (21) is vertically fixed on the connecting rod (20). Several stirring rods (10) are fixed on one side of the scraper (21). The outer wall of the scraper (21) is in contact with the inner wall of the mixing tank (1).

6. The high-efficiency phenolic plastic mixer according to claim 5, characterized in that, The scraper (21) has a feeding plate (22) fixed at its bottom, and the bottom wall of the feeding plate (22) is in contact with the inner bottom wall of the conical section (4).

7. The high-efficiency phenolic plastic mixer according to claim 1, characterized in that, A connecting plate (23) is fixed to the outer wall of the conveying cylinder (5). The connecting plate (23) is located on the outer side of the bottom of the mixing tank (1). The connecting plate (23) is fixedly connected to the bottom of the mixing tank (1) by bolts.

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