Mixing device for rubber and plastic granulation

Abstract

The utility model discloses a mixing device for rubber and plastic granulation, and belongs to the technical field of rubber processing. The mixing device comprises a mixing tank, a fixed plate fixedly mounted at an opening in the top of the mixing tank, a stirring shaft arranged in the mixing tank and rotationally connected with the bottom of the mixing tank, and a motor fixedly mounted at the bottom of the mixing tank and used for driving the stirring shaft to rotate; the material mixing device further comprises a material storage hopper and a material suction assembly, wherein the material storage hopper is erected on one side of the mixing tank and used for storing materials, and the material suction assembly is arranged on the material storage hopper and the fixing plate and used for conveying the materials in the material storage hopper into the mixing tank. According to the mixing device for rubber and plastic granulation, through the design of the feeding cavity and the discharging holes, materials can enter the mixing tank from the discharging holes along with rotation of the stirring shaft after entering the feeding cavity through the material suction assembly, so that the materials are not concentrated at a certain position in the initial stage, and the mixing uniformity and efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of rubber processing technology, specifically a mixing device for rubber granulation. Background Technology

[0002] In the rubber production industry, rubber pelleting is a crucial step, and mixing, as a key process before pelleting, directly affects the quality of the final product.

[0003] Chinese utility model patent CN218700345U discloses a mixing device for plastic particle granulation. It uses a set of stirring rods to mix materials in a working bucket, while simultaneously allowing the material to fall through the upper opening of a circular sleeve to the bottom of the bucket for further mixing, thus improving mixing efficiency. However, when adding materials, the device directly pours them into the working bucket from the inlet. If the feeding speed is too fast, the material often settles directly at the bottom of the bucket or near the inlet, making it difficult for other areas to be filled and evenly distributed. This localized accumulation results in uneven material distribution within the bucket, making it difficult for the material to be quickly and evenly distributed evenly during mixing, thus affecting the mixing effect and efficiency.

[0004] Therefore, this application provides a mixing apparatus for rubber granulation to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a mixing device for rubber granulation, which aims to solve the problems mentioned in the background art, such as the existing mixing devices directly pouring materials into the feed port when adding materials, which easily leads to uneven initial distribution of materials in the barrel, thereby affecting the effect and efficiency of subsequent mixing.

[0006] To achieve the above objectives, this application provides the following technical solution: a mixing device for rubber granulation, comprising a mixing tank, a fixing plate fixedly installed at the top opening of the mixing tank, a stirring shaft disposed inside the mixing tank and rotatably connected to the bottom of the mixing tank, and a motor fixedly installed at the bottom of the mixing tank for driving the stirring shaft to rotate;

[0007] The mixing device also includes a storage hopper mounted on one side of the mixing tank for storing materials, and a suction component mounted on the storage hopper and the fixing plate for conveying the materials in the storage hopper to the mixing tank.

[0008] The top of the stirring shaft has an internal feeding chamber connected to the suction assembly, and the outside of the stirring shaft has discharge holes arranged in a ring array connected to the feeding chamber. The combined design of the hopper and the suction assembly allows for continuous and efficient material addition by simply conveying the material from the hopper to the mixing tank via the suction assembly when materials need to be added. This reduces manual material addition and improves material transfer efficiency. The feeding chamber and discharge holes connected to the suction assembly allow the material to be dispersed into the mixing tank through multiple discharge holes as the stirring shaft rotates after entering the feeding chamber. Compared to traditional direct pouring from the inlet, this design ensures that the material is not concentrated in one location initially, but rather evenly distributed throughout the mixing tank, creating better conditions for subsequent mixing and improving the uniformity and efficiency of the mixture. It also prevents material blockage during transport.

[0009] Preferably, to achieve the conveying and dispersion of materials into the mixing tank, the suction assembly includes a feed pipe fixedly connected to the bottom of the storage hopper, a suction pump fixedly installed at the bottom of the storage hopper and fixedly connected to the feed pipe, a fixed pipe fixedly installed on the fixed plate, and a conveying pipe fixedly connected to the end of the suction pump away from the feed pipe and fixedly connected to the fixed pipe. The end of the stirring shaft away from the motor is rotatably connected to the bottom end of the fixed pipe, and the feed chamber communicates with the conveying pipe. The combined design of the feed pipe, suction pump, conveying pipe, and fixed pipe ensures that when materials need to be added to the mixing tank, only the suction pump needs to be started to draw materials from the storage hopper through the feed pipe, then the materials are conveyed to the fixed pipe through the conveying pipe, and finally enter the mixing tank through the feed chamber and the discharge hole. This ensures that the materials can enter the mixing tank stably and continuously, improves the material conveying efficiency, and reduces manual operation.

[0010] Preferably, to ensure that the material entering the feeding chamber can be smoothly discharged from the discharge port and to prevent the mixing tank from flowing back into the conveying pipe, the discharge port is inclined. The lower inclined end of the discharge port is located outside the stirring shaft, and the higher inclined end of the discharge port is connected to the feeding chamber. With this design, when the material enters the feeding chamber, it can be smoothly discharged from the discharge port under the action of gravity and the centrifugal force generated by the rotation of the stirring shaft, ensuring that the material can be smoothly discharged from the discharge port and avoiding accumulation in the feeding chamber. At the same time, the inclined design forms a one-way channel to prevent the material in the mixing tank from flowing back into the conveying pipe, ensuring the one-way and stability of the material conveying.

[0011] Preferably, in order to prevent material from accumulating in the feeding chamber, a conical inclined surface for guiding material is fixedly provided on the inner side of the feeding chamber; the design of the conical inclined surface allows the material to slide naturally down the inclined surface to the discharge hole after entering the feeding chamber, which can effectively prevent material from accumulating in the feeding chamber, ensure that the material can flow smoothly to the discharge hole, improve the fluidity of the material in the feeding chamber, and ensure the continuity of material conveying.

[0012] Preferably, to ensure the mixing effect, a ring-shaped mixing blade is fixedly installed on the outside of the mixing shaft, and each mixing blade has an irregular shape. The design of the irregularly shaped mixing blade on the outside of the mixing shaft makes the material generate a complex flow pattern when the mixing shaft rotates, thereby increasing the shear force and turbulence between materials, allowing the materials to be more fully stirred and mixed in the mixing tank, improving the mixing effect, and ensuring the quality of rubber granulation.

[0013] Preferably, in order to facilitate observation of the mixing process, an observation window is fixedly provided on one side of the mixing tank; the design of the observation window allows the operator to directly observe the mixing process of the materials in the mixing tank through the observation window, so as to grasp the mixing progress and mixing effect in real time.

[0014] Preferably, to facilitate material discharge, a discharge pipe is fixedly connected to one side of the bottom of the mixing tank, and a valve is fixedly installed on the discharge pipe; the design of the discharge pipe and valve means that after the materials are mixed, the materials can be discharged through the discharge pipe simply by opening the valve, making the operation simple and convenient.

[0015] Preferably, in order to ensure the sealing of the mixing tank during mixing, the fixing plate is hinged to both sides with a tank cover for sealing the top opening of the mixing tank; the tank cover is designed so that it can be closed during the material mixing process to ensure the sealing of the mixing tank, prevent material leakage, and avoid external impurities from entering the mixing tank and affecting the mixing quality.

[0016] This rubber pelletizing mixing device, through the combined design of a storage hopper and a suction component, allows for continuous and efficient material addition when materials need to be added to the mixing tank. This reduces manual material addition and improves the efficiency of material transfer.

[0017] This rubber pelleting mixing device, through the design of the feeding chamber and the discharge port, allows the material to enter the feeding chamber through the suction component and then disperse into the mixing tank from multiple discharge ports as the stirring shaft rotates. This prevents the material from being concentrated in one place in the initial stage, which helps to improve the uniformity and efficiency of mixing and also prevents the material from being blocked during the conveying process.

[0018] This rubber pelleting mixing device features an inclined discharge hole. When the material enters the feeding chamber, it can be smoothly discharged from the discharge hole under the action of gravity and centrifugal force generated by the rotation of the stirring shaft. This ensures that the material can be smoothly discharged from the discharge hole and avoids accumulation in the feeding chamber. At the same time, the inclined design forms a one-way channel to prevent the material in the mixing tank from flowing back into the conveying pipe, thus ensuring the one-way and stability of the material conveying.

[0019] This rubber pelleting mixing device features a conical inclined surface, allowing the material to slide naturally down the inclined surface to the discharge port after entering the feeding chamber. This effectively prevents material from accumulating in the feeding chamber, ensuring that the material can flow smoothly to the discharge port, improving the fluidity of the material in the feeding chamber, and guaranteeing the continuity of material conveying. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a mixing device for rubber granulation in Example 1;

[0021] Figure 2 This is a cross-sectional view of the mixing tank in Example 1;

[0022] Figure 3 This is a schematic diagram of the internal structure of the feed chamber in Example 1;

[0023] Figure 4 This is a schematic diagram of the internal structure of the feed chamber in Example 2;

[0024] In the picture:

[0025] 1. Mixing tank; 11. Observation window; 12. Discharge pipe;

[0026] 2. Fixing plate; 21. Can lid;

[0027] 3. Stirring shaft; 31. Feed chamber; 311. Conical inclined surface; 32. Discharge hole; 33. Stirring blades;

[0028] 4. Electric motor;

[0029] 5. Storage hopper;

[0030] 6. Suction assembly; 61. Feed pipe; 62. Suction pump; 63. Conveying pipe; 64. Fixed pipe. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Example 1

[0033] This embodiment provides a mixing device for rubber granulation, such as... Figures 1-3 As shown, the mixing device includes a mixing tank 1, a fixing plate 2 fixedly installed at the top opening of the mixing tank 1, a stirring shaft 3 disposed inside the mixing tank 1 and rotatably connected to the bottom of the mixing tank 1, and a motor 4 fixedly installed at the bottom of the mixing tank 1 for driving the stirring shaft 3 to rotate; the mixing device also includes a storage hopper 5 mounted on one side of the mixing tank 1 for storing materials, and a suction assembly 6 disposed on the storage hopper 5 and the fixing plate 2 for conveying the materials in the storage hopper 5 to the mixing tank 1; the top end of the stirring shaft 3 is provided with a feeding chamber 31 communicating with the suction assembly 6, and the outside of the stirring shaft 3 is provided with a discharge hole 32 arranged in a ring array and communicating with the feeding chamber 31.

[0034] In order to ensure the sealing of the mixing tank 1 during mixing, the fixing plate 2 is hinged on both sides to the tank cover 21 for sealing the top opening of the mixing tank 1. The design of the tank cover 21 is that the tank cover 21 can be closed during the material mixing process to ensure the sealing of the mixing tank 1, prevent material leakage, and avoid external impurities from entering the mixing tank 1 and affecting the mixing quality. After the material mixing is completed, the tank cover 21 can be opened to perform cleaning or maintenance operations inside the mixing tank 1.

[0035] In addition, to facilitate material discharge, a discharge pipe 12 is fixedly connected to one side of the bottom of the mixing tank 1, and a valve is fixedly installed on the discharge pipe 12. The design of the discharge pipe 12 and the valve means that after the materials are mixed, the materials can be discharged through the discharge pipe 12 simply by opening the valve. The operation is simple and convenient. When it is necessary to mix materials, the valve can be closed to ensure that the materials will not flow out from the discharge pipe 12.

[0036] In use, the materials to be mixed are placed in the storage hopper 5 in sequence, and the lids 21 on both sides of the fixing plate 2 are closed. At this time, the valve on the observation window 11 is closed. Then, the suction assembly 6 and the motor 4 are started. The motor 4 drives the stirring shaft 3 connected to it to rotate, and the suction assembly 6 sucks in the material in the storage hopper 5 and transports it to the feeding chamber 31 inside the top of the stirring shaft 3. As the stirring shaft 3 rotates, the material entering the feeding chamber 31 will be dispersed into the mixing tank 1 from the discharge holes 32 distributed in a ring array under the action of centrifugal force and gravity. The material entering the mixing tank 1 can then be mixed under the further stirring action of the stirring shaft 3. After the mixing is completed, the valve on the discharge pipe 12 is opened, and the mixed material will be discharged from the bottom of the mixing tank 1 through the discharge pipe 12 under the action of gravity, thus completing the entire mixing process.

[0037] Specifically, the suction assembly 6 includes a feed pipe 61 fixedly connected to the bottom of the storage hopper 5, a suction pump 62 fixedly installed at the bottom of the storage hopper 5 and fixedly connected to the feed pipe 61, a fixed pipe 64 fixedly installed on the fixed plate 2, and a conveying pipe 63 fixedly connected to the end of the suction pump 62 away from the feed pipe 61 and fixedly connected to the fixed pipe 64. The end of the stirring shaft 3 away from the motor 4 is rotatably connected to the bottom end of the fixed pipe 64, and the feeding chamber 31 is connected to the conveying pipe 63.

[0038] Understandably, in order to ensure that the material entering the feed chamber 31 can be smoothly discharged from the discharge hole 32 and to prevent the mixing tank 1 from flowing back into the conveying pipe 63, the discharge hole 32 is set at an angle. The lower angle of the discharge hole 32 is located outside the stirring shaft 3, and the higher angle of the discharge hole 32 is connected to the feed chamber 31. With this design, when the material enters the feed chamber 31, it can be smoothly discharged from the discharge hole 32 under the action of gravity and the centrifugal force generated by the rotation of the stirring shaft 3, so as to ensure that the material can be smoothly discharged from the discharge hole 32 and avoid accumulation in the feed chamber 31. At the same time, the angled design forms a one-way channel to prevent the material in the mixing tank 1 from flowing back into the conveying pipe 63, thus ensuring the one-way and stability of the material conveying.

[0039] When materials need to be added to the mixing tank 1, the operator starts the suction pump 62. At this time, the suction pump 62 operates and generates suction. Then, under the action of suction, the materials stored in the storage hopper 5 are sucked into the feed pipe 61. Since the feed pipe 61 is fixedly connected to the suction pump 62, the materials sucked into the feed pipe 61 will enter the suction pump 62. Then, the suction pump 62 pressurizes and pushes the sucked materials into the conveying pipe 63, and then conveys them through the conveying pipe 63 to the fixed pipe 64 fixedly installed on the fixed plate 2. Since the end of the stirring shaft 3 away from the motor 4 is rotatably connected to the bottom end of the fixed pipe 64, and the feed chamber 31 is connected to the conveying pipe 63, the materials entering the fixed pipe 64 are then conveyed into the fixed pipe 64. The material in the fixed pipe 64 will directly enter the feed chamber 31 inside the top of the stirring shaft 3. However, as the motor 4 drives the stirring shaft 3 to rotate, the material entering the feed chamber 31 will move towards the discharge hole 32 under the combined action of the centrifugal force generated by the rotation of the stirring shaft 3 and its own gravity. Since the discharge hole 32 is inclined, the lower inclined end is located outside the stirring shaft 3, and the higher inclined end is connected to the feed chamber 31. This design allows the material to be discharged more smoothly from the discharge hole 32 into the mixing tank 1. Furthermore, the discharge holes 32 are distributed in a ring array outside the stirring shaft 3, so that the material will enter the mixing tank 1 in a more dispersed state, avoiding the material from concentrating in one place.

[0040] Furthermore, stirring blades 33 arranged in a ring are fixedly installed on the outside of the stirring shaft 3, and each stirring blade 33 has an irregular shape.

[0041] When the motor 4 drives the stirring shaft 3 to rotate, the irregularly shaped stirring blades 33, which are fixedly installed on the outside of the stirring shaft 3 and distributed in a ring, rotate accordingly. Since the stirring blades 33 are irregularly shaped, the angle and speed of contact between each part and the material change continuously during the rotation process. This change makes the material not only have a circumferential motion around the stirring shaft 3 when the stirring blades 33 push the material, but also motion components in multiple directions such as up and down and radial, which greatly improves the mixing uniformity of the material. As a result, the material dispersed from the discharge hole 32 will be further mixed with the material in the mixing tank 1 under the action of the rotation of multiple stirring blades 33.

[0042] Furthermore, an observation window 11 is fixedly installed on one side of the mixing tank 1. The design of the observation window 11 allows the operator to directly observe the mixing status of the materials in the mixing tank 1 through the observation window 11 during the mixing process using the mixing device, so as to grasp the mixing progress and mixing effect in real time and facilitate timely operation such as pausing mixing or adding materials.

[0043] Example 2

[0044] Unlike Example 1, as Figure 4 As shown, in order to prevent material from accumulating in the feeding chamber 31, a conical inclined surface 311 for guiding material is fixedly provided on the inner side of the feeding chamber 31. The design of the conical inclined surface 311 allows the material to slide naturally down the inclined surface to the discharge hole 32 after entering the feeding chamber 31. This can effectively prevent material from accumulating in the feeding chamber 31, ensure that the material can flow smoothly to the discharge hole 32, improve the fluidity of the material in the feeding chamber 31, and ensure the continuity of material conveying.

[0045] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A rubber and plastic material mixing device, comprising a mixing tank (1), a fixed plate (2) fixedly installed at the top opening of the mixing tank (1), a stirring shaft (3) arranged in the mixing tank (1) and rotationally connected with the bottom of the mixing tank (1), and a motor (4) fixedly installed at the bottom of the mixing tank (1) for driving the stirring shaft (3) to rotate. characterized in that The mixing device further comprises a storage hopper (5) erected on one side of the mixing tank (1) for storing materials, and a material suction assembly (6) arranged on the storage hopper (5) and the fixed plate (2) for conveying the materials in the storage hopper (5) into the mixing tank (1). The top end of the stirring shaft (3) is internally provided with a feeding cavity (31) in communication with the material suction assembly (6), and the outer side of the stirring shaft (3) is provided with a plurality of discharge holes (32) arranged in an annular array and in communication with the feeding cavity (31).

2. The rubber plastic compounding apparatus according to claim 1, wherein: The material suction assembly (6) comprises a feeding pipe (61) fixedly connected to the bottom of the storage hopper (5), a material suction pump (62) fixedly installed at the bottom of the storage hopper (5) and fixedly connected with the feeding pipe (61), a fixed pipe (64) fixedly installed on the fixed plate (2), and a conveying pipe (63) fixedly connected to the end of the material suction pump (62) away from the feeding pipe (61) and fixedly connected with the fixed pipe (64), wherein the end of the stirring shaft (3) away from the motor (4) is rotationally connected to the bottom end of the fixed pipe (64), and the feeding cavity (31) is in communication with the conveying pipe (63).

3. The rubber plastic compounding mixer of claim 2, wherein: The discharge holes (32) are arranged obliquely, and the obliquely lower end of the discharge holes (32) is located on the outer side of the stirring shaft (3), and the obliquely higher end of the discharge holes (32) is in communication with the feeding cavity (31).

4. The rubber plastic compounding mixer of claim 3, wherein: A conical inclined surface (311) for guiding materials is fixedly arranged in the feeding cavity (31).

5. The rubber plastic compounding mixer of claim 2, wherein: A plurality of stirring blades (33) are fixedly installed on the outer side of the stirring shaft (3) in an annular arrangement, and each of the stirring blades (33) is of a special-shaped structure.

6. The rubber plastic compounding apparatus according to claim 1, wherein: An observation window (11) is fixedly arranged on one side of the mixing tank (1).

7. The rubber plastic compounding mixer of claim 6, wherein: A discharge pipe (12) is fixedly connected to one side of the bottom of the mixing tank (1), and a valve is fixedly installed on the discharge pipe (12).

8. The rubber plastic compounding mixer of claim 1, wherein: A tank cover (21) for sealing the top opening of the mixing tank (1) is hingedly connected to both sides of the fixed plate (2).

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