A hopper

Abstract

The utility model discloses a hopper, including hopper body, the top of hopper body has the material supplementing mouth, and the bottom has the discharge port, its characterized in that, the inner chamber of hopper body is equipped with rotating component, and rotating component can rotate with the axis of hopper body as the center line, and rotating component includes one group or more groups of paddle arranged in the radial, and the paddle is the frame type structure, and each group of paddle includes a plurality of radial stirring rods, and a plurality of stirring rods are arranged in the interval up and down, and the free end of a plurality of stirring rods is connected as a whole through a slanting scraping rod, and the scraping rod is parallel with the inner wall of hopper body and is arranged. When the paddle of rotating component rotates, each stirring rod rotates in the plane where it is, does the plane circumferential motion, realizes the fault type stirring, makes the material up and down fluctuation, can prevent the material bridging phenomenon and occurs. The scraping rod plays the role of scraper, and can scrape the inner wall of hopper body when rotating, thereby preventing the material from adhering on the inner wall of hopper body.

Description

Technical Field

[0001] This utility model relates to the field of color masterbatch production technology, and in particular to a hopper. Background Technology

[0002] In the color masterbatch production process, a hopper is used to connect the discharge port of a high-speed mixer to the feed port of an extruder. The top of the hopper has a feeding port. After the high-speed mixer mixes various powders and granules, the mixture is fed into the hopper through the feeding port. During production, the hopper is continuously fed with premixed materials. The bottom of the hopper has a discharge port, through which the material in the hopper is discharged into the extruder.

[0003] When the mixed material has a high content of color masterbatch or contains both powder and granular material, the powder and granular material will bridge in the hopper due to the material density and moisture content, forming an arched structure. When bridging occurs, the material flow will be interrupted, the hopper discharge rate will not meet the normal discharge requirements, affecting the continuity and efficiency of production, and also causing the separation of powder and granular material.

[0004] The current solution involves traditional methods such as manual hammering, poking with sticks, and installing vibratory beaters. These methods not only consume a lot of manpower and materials and generate a lot of noise, but also pose serious safety hazards, severely affecting the continuity of production and the stability of products. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a hopper that can avoid the problems of material bridging and sticking to the wall inside the hopper.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A hopper includes a hopper body, the top of which has a feeding port and the bottom has a discharging port. The inner cavity of the hopper body is provided with a rotating assembly, which is capable of rotating about the axis of the hopper body as a center line. The rotating assembly includes one or more sets of blades arranged radially.

[0008] The blades have a frame structure, and each set of blades includes multiple radial stirring rods. The multiple stirring rods are arranged vertically at intervals, and the free ends of the multiple stirring rods are connected as one unit by an oblique scraper rod. The scraper rod is arranged parallel to the inner wall of the hopper body.

[0009] A further technical solution is that two cross-shaped second support beams are fixed at the bottom of the hopper body, and the second support beams evenly divide the discharge port into four openings.

[0010] A further technical solution is that the rotating component includes a paddle shaft coaxially arranged with the hopper body, the paddle shaft is rotatably disposed within the hopper body and connected to a driving component for driving its rotation, and the fixed end of the stirring rod is fixed on the paddle shaft.

[0011] A further technical solution is that a first support beam is fixed to the top of the hopper body, and the first support beam is located in the radial direction of the hopper body;

[0012] Two cross-shaped second support beams are fixed to the bottom of the hopper body, and the second support beams are located radially on the hopper body.

[0013] The two ends of the blade shaft are fixed to the corresponding support beams by bearings.

[0014] A further technical solution is that the driving component includes:

[0015] The motor is located outside the hopper body;

[0016] Two pulleys are fixed to the motor's output shaft and the propeller shaft, respectively; and

[0017] A belt connects two pulleys together.

[0018] A further technical solution is that both the pulley and the belt are covered with protective covers.

[0019] A further technical solution is that the rotating component includes two sets of blades, each set of blades is located on one side of the center line of the rotating component, the two sets of blades are arranged vertically and horizontally, and the two sets of blades are arranged opposite each other in the same radial direction.

[0020] A further technical solution is that the blades are made of stainless steel.

[0021] The beneficial effects of adopting the above technical solution are as follows:

[0022] A rotating component is added to the hopper body. When the blades of the rotating component rotate, each stirring rod rotates in its plane and makes planar circular motion to achieve discontinuous stirring. This causes the material to fluctuate up and down and has fluidity under its weight, which can achieve a good stirring effect and prevent the occurrence of material bridging.

[0023] The scraper bar is the free end of the blade in the radial direction. It acts as a scraper and scrapes the inner wall of the hopper body when it rotates, thus preventing the material from sticking to the inner wall of the hopper body.

[0024] The blades adopt a frame structure, which reduces the contact area between the blades and the material, thereby reducing the resistance during mixing and the energy consumption when driving the blade shaft to rotate. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a top view of the structure of this utility model (blades are not shown);

[0028] Figure 3 This is a bottom view of the structure of this utility model (blades are not shown). Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] In the description of this utility model, unless otherwise stated, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Example 1:

[0032] like Figures 1-3 As shown, a hopper includes a hopper body 2, which is generally a conical structure with open ends. The diameter of the lower end of the hopper body 2 is relatively narrower than that of the upper end. A feeding port 8 is provided at the top of the hopper body 2 for receiving the material mixed by the mixer, and a discharge port 5 is provided at the bottom of the hopper body 2 for feeding the material to the extruder.

[0033] In this invention, the inner cavity of the hopper body 2 has a rotating assembly that rotates around the axis of the hopper body 2. The rotating assembly includes radially arranged blades 3, and the number of blades 3 is one or more sets. There is a uniform gap between the free end of the blade 3 and the inner wall of the hopper body 2. This gap is set according to the actual working conditions, that is, the radial free end of the blade 3 is parallel and close to the inner wall of the hopper body 2. The blades 3 are eccentrically arranged in the inner cavity of the hopper body 2. The rotating assembly drives the blades 3 to rotate. On the one hand, the blades 3 play a stirring role, so that the material flows and can prevent the material bridging phenomenon. On the other hand, the free end of the blade 3 near the inner wall of the hopper body 2 can also act as a scraper, which can scrape the inner wall of the hopper body 2 during rotation, thereby preventing the material from sticking to the inner wall of the hopper body 2.

[0034] Example 2:

[0035] like Figure 3 As shown, two cross-shaped second support beams 6 are fixed to the bottom of the hopper body 2. The second support beams 6 are located radially on the hopper body 2 and can evenly divide the discharge port 5 into four openings. The small-sized discharge port 5 can break the bridging effect of the material and avoid the problem of material stagnation caused by the friction and cohesion between material particles forming a "material arch" (especially for powdery, granular, or sticky materials) due to the large-sized discharge port 5.

[0036] Four small-sized discharge ports 5 physically divide the span of a single outlet, making it difficult for materials to form a stable arched structure. Under the influence of the material's own gravity, the materials are more likely to collapse and flow. The material is discharged through multiple outlets, dispersing the flow path and avoiding concentrated stress or local blockage at a single outlet. Even if one outlet is temporarily blocked, the other outlets can still continue to discharge material, improving system reliability.

[0037] In addition, the small-sized feed port 5 can act as a physical screen to prevent large foreign objects (such as tools or clumps of material) that exceed the diameter from accidentally falling into downstream equipment, thus protecting the screw conveyor mechanism of the extruder.

[0038] In addition, the bottom of the blade 3 can be set close to the upper surface of the second support beam 6. When the blade 3 rotates, its bottom sweeps across the upper surface of the second support beam 6, which can clean up the material remaining at the bottom of the hopper body 2 to the maximum extent, avoiding the problem of material accumulation dead corners caused by the fast flow rate in the center of the traditional large-opening hopper.

[0039] Example 3:

[0040] The rotating assembly includes a blade shaft 4 coaxially arranged with the hopper body 2. The blade shaft 4 is rotatably arranged inside the hopper body 2 and connected to a drive assembly that drives its rotation. The blades 3 are fixed on the blade shaft 4.

[0041] A first support beam 10 is fixed to the top of the hopper body 2, and the first support beam 10 is located radially on the hopper body 2. The notches on both sides of the first support beam 10 form feeding ports 8. Two cross-shaped second support beams 6 are fixed to the bottom of the hopper body 2, dividing the bottom of the hopper body 2 into four notches, which form feeding ports 5. The first support beam 10 and the second crossbeam 6 provide stable support for the installation of the blade shaft 4. Both ends of the blade shaft 4 are fixed to the corresponding support beams by bearings.

[0042] Two cross-shaped second support beams 6 are set at the bottom of the hopper. The structure of the cross beams forms a support frame with high torsional and bending resistance in a limited space. Compared with a single beam, it can more evenly distribute the dynamic load when the blade shaft 4 is running, and reduce the risk of deformation of the hopper body 2.

[0043] Example 4:

[0044] The drive assembly includes a motor 1 mounted outside the hopper body 2. The motor 1 can be fixed to the outer wall of the hopper body 2 via a motor mount. Pulleys 7 are fixed to both the output shaft of the motor 1 and the blade shaft 4. The pulleys 7 are located at the upper end of the blade shaft 4, or alternatively at the lower end. However, considering that the belt occupies a certain area of ​​the feeding port 8 or the discharge port 5, and that the area of ​​the feeding port 8 is larger than that of the discharge port 5, and that only one first support beam 10 is provided on the feeding port 8, it is preferable to place the pulleys 7 at the upper end of the blade shaft 4. Synchronous transmission is achieved between the two pulleys 7 via a belt. The two pulleys 7 can be of different sizes, as long as the belt's wrap angle with the pulleys 7 meets the requirements. Protective covers 9 are provided on both the pulleys 7 and the belt to prevent materials from affecting the effective transmission of the pulleys 7 and the belt during feeding or discharging.

[0045] During use, the stirring speed can be adjusted by controlling motor 1 with a frequency converter. In different material formulation systems, different stirring speeds can be used to ensure that the materials do not bridge or stick to the wall.

[0046] Example 5:

[0047] The rotating assembly includes two sets of blades 3. Each set of blades is located on one side of the center line of the rotating assembly. The two sets of blades 3 are arranged vertically and are arranged opposite each other in the same radial direction. That is, the two sets of blades 3 are located in the same radial direction but not at the same height. The blade shaft 4 drives the two sets of blades 3 to rotate in the same direction and at the same speed.

[0048] Since bridging within the hopper body 2 typically occurs in the middle and lower layers, two sets of blades 3 are located in the middle and lower parts of the hopper, respectively. The blades 3 in the middle layer primarily disperse newly added material, accelerating material settling and preventing bridging; the blades 3 in the lower layer act directly above the discharge port 5, cutting any material clumps that may form in real time, breaking up material arches, and pushing the material towards the discharge port 5 to facilitate discharge. The two sets of blades 3 rotate at the same speed, ensuring synchronized and coordinated movement of material in the middle and lower layers, avoiding exacerbated stratification caused by speed differences. The two sets of blades 3 are sufficient to meet the requirements for stable material discharge.

[0049] The two sets of blades 3 are spaced apart and discontinuously arranged to reduce the resistance during blade rotation and lower equipment energy consumption. Since the material has a certain degree of fluidity due to gravity, material will not accumulate between the two sets of blades 3. The two sets of blades 3 are arranged opposite each other in the same radial direction. When the two sets of blades 3 rotate, the material is bidirectionally pushed within the radial plane, enhancing convection.

[0050] Example 6:

[0051] Each set of blades is made of stainless steel, which can prevent rust and other stains from contaminating the materials.

[0052] Example 7:

[0053] The impeller 3 has a frame structure, including multiple radial stirring rods. The stirring rods are arranged vertically and horizontally along the impeller shaft 4. One end of each stirring rod is fixed to the impeller shaft 4 by welding or other means. The free ends of the stirring rods are connected together by an oblique scraper rod to form an inverted right trapezoidal structure. The scraper rod is parallel to the inner wall of the hopper body 2, and the scraper rod wall is close to the inner wall of the hopper body 2 with a uniform gap between them.

[0054] A rotating component is added inside the hopper body 2. When the blades 3 of the rotating component rotate, each stirring rod rotates in its plane and makes planar circular motion to achieve discontinuous stirring. This causes the material to fluctuate up and down and has fluidity under its weight, which can achieve a good stirring effect and prevent the occurrence of material bridging.

[0055] The scraper bar is the free end of the blade in the radial direction. It acts as a scraper and scrapes the inner wall of the hopper body when it rotates, thus preventing the material from sticking to the inner wall of the hopper body.

[0056] The blade 3 adopts a frame structure, which reduces the contact area between the blade 3 and the material, thereby reducing the resistance during stirring and reducing the energy consumption when driving the blade shaft 4 to rotate.

[0057] The above are merely preferred embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A hopper, comprising a hopper body, wherein the top of the hopper body has a feeding port and the bottom has a discharging port, characterized in that, The inner cavity of the hopper body is provided with a rotating component, which is capable of rotating about the axis of the hopper body as the center line. The rotating component includes one or more sets of blades arranged radially. The blades have a frame structure, and each set of blades includes multiple radial stirring rods. The multiple stirring rods are arranged vertically at intervals, and the free ends of the multiple stirring rods are connected as one unit by an oblique scraper rod. The scraper rod is arranged parallel to the inner wall of the hopper body.

2. The hopper according to claim 1, characterized in that, The bottom of the hopper body is fixed with two cross-shaped second support beams, which evenly divide the discharge port into four openings.

3. The hopper according to claim 1, characterized in that, The rotating assembly includes a paddle shaft coaxially arranged with the hopper body. The paddle shaft is rotatably disposed within the hopper body and connected to a drive assembly for driving its rotation. The fixed end of the stirring rod is fixed to the paddle shaft.

4. The hopper according to claim 3, characterized in that, A first support beam is fixed to the top of the hopper body, and the first support beam is located in the radial direction of the hopper body. Two cross-shaped second support beams are fixed to the bottom of the hopper body, and the second support beams are located radially on the hopper body. The two ends of the blade shaft are fixed to the corresponding support beams by bearings.

5. The hopper according to claim 3, characterized in that, The driving component includes: The motor is located outside the hopper body; Two pulleys are fixed to the motor's output shaft and the propeller shaft, respectively; and A belt connects two pulleys together.

6. The hopper according to claim 5, characterized in that, Both the pulley and the belt are covered with protective covers.

7. The hopper according to claim 1, characterized in that, The rotating assembly includes two sets of blades, each set of blades is located on one side of the center line of the rotating assembly, the two sets of blades are arranged vertically and are arranged opposite each other in the same radial direction.

8. The hopper according to claim 1, characterized in that, The blades are made of stainless steel.

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