Material discharging system
By designing a large-angle hopper and a gradually increasing spiral discharge structure with spiral blades, the problems of blockage and entanglement in the material conveying process are solved, achieving uniform and continuous material conveying and adapting to the discharge requirements of various materials.
Patent Information
- Application Number
- CN202422231234.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-09-11
AI Technical Summary
Existing material conveying systems are prone to problems such as material bridging, screw blockage, and entanglement of long materials during mixed conveying, resulting in uneven discharge and blockage.
The design incorporates a large-angle funnel-shaped hopper and a discharge spiral structure with the height of the spiral blades gradually increasing along the discharge direction. This is combined with symmetrically arranged counter-rotating spiral blades, stainless steel material, and polymer liners to reduce friction. The variable diameter and variable pitch spiral blade design prevents material from arching and entanglement.
It achieves uniform and continuous material discharge, solves problems such as material blockage and arching, adapts to the conveying needs of various mixed materials, and improves the reliability and efficiency of the system.
Smart Images
Figure CN223560829U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of material conveying equipment, in particular to a material discharging system. BACKGROUND
[0002] There are various types of organic materials with fuel characteristics, and their properties are various. Commonly seen are wood chips, tree bark, sludge, pulp residue and other substances. In the mixed conveying process, the material discharge of the silo is a pain point and difficulty. No matter it is a conical hopper or a center rotary discharge or a spiral discharge, different problems will occur, such as material bridging, spiral jamming, and long strip material winding and jamming the rotating device, etc. Therefore, there is an urgent need for a silo system that can temporarily store various mixed materials and uniformly discharge them. CONTENT OF THE UTILITY MODEL
[0003] The present application provides a material discharging system, which comprises a silo and a discharging spiral device. The silo is in a funnel-shaped structure, and the discharging spiral device is arranged at the bottom of the silo. The discharging spiral device comprises at least two discharging spirals, each of which comprises a spiral shaft and a spiral blade arranged on the outer periphery of the spiral shaft. The height of the spiral blade gradually increases along the discharging direction of the discharging spiral.
[0004] In some embodiments, the rotation directions of adjacent discharging spirals are opposite.
[0005] In some embodiments, the discharging spiral device comprises an even number of discharging spirals arranged symmetrically. The rotation direction of half of the discharging spirals on one side is opposite to that of the other half of the discharging spirals on the other side.
[0006] In some embodiments, the top opening diameter of the silo is not more than 1.3 times the bottom opening diameter.
[0007] In some embodiments, the included angle between the silo wall and the horizontal plane is 70°-80°.
[0008] In some embodiments, the inner surface material of the silo wall is stainless steel.
[0009] In some embodiments, the inner surface of the silo wall is provided with a polymer lining plate to reduce friction.
[0010] In some embodiments, the height of the spiral blade is 5-30 cm.
[0011] In some embodiments, the blade pitch of the spiral blade gradually increases along the discharging direction of the discharging spiral.
[0012] In some embodiments, a plurality of openings are arranged on each circle of the spiral blade.
[0013] The material discharging system provided by the embodiment of the application can solve various problems commonly existing in organic material systems, such as material blocking and arching, by designing a large-angle material bin and a discharging screw structure in which the height of the spiral blade gradually increases along the discharging direction of the discharging screw. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0015] Figure 1 is a top view structural schematic diagram of an embodiment of the material discharging system of the application;
[0016] Figure 2 is Figure 1 is a sectional view structural schematic diagram of the material discharging system along A-A in the embodiment;
[0017] Figure 3 is a structural schematic diagram of another embodiment of the material discharging system of the application;
[0018] Figure 4 is a structural schematic diagram of an embodiment of the discharging screw of the application;
[0019] Figure 5 is a structural schematic diagram of another embodiment of the discharging screw of the application;
[0020] Figure 6 is a structural schematic diagram of the spiral blade in the embodiment of the application. DETAILED DESCRIPTION
[0021] The application will be described in further detail below in conjunction with the drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the application, but do not limit the scope of the application. Similarly, the following embodiments are only some embodiments of the application, but not all embodiments of the application, and all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.
[0022] The terms "first", "second", "third", etc. in the embodiments of the present application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. The terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or components inherent to the process, method, product or device.
[0023] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor does it necessarily refer to a separate or alternative embodiment. It is expressly understood that the embodiments described herein can be combined with each other.
[0024] The present application provides a material discharging system, please refer to Figure 1 and Figure 2 , Figure 1 is a top view structural schematic diagram of an embodiment of the material discharging system of the present application, Figure 2 is Figure 1 a sectional view structural schematic diagram of the material discharging system along A-A in the embodiment; the material discharging system includes but is not limited to a silo 100 and a discharging screw device 200.
[0025] Specifically, the silo 100 in the embodiment has a funnel structure, and the specific peripheral shape is not limited to a rectangular or cylindrical shape, etc. The discharging screw device 200 is arranged at the bottom of the silo 100, and is used to discharge organic materials (such as sawdust, tree bark, sludge, pulp residue, etc.) entering the silo 100 from the bottom.
[0026] Optionally, the top opening diameter of the bin 100 in the embodiment is not more than 1.3 times the bottom opening diameter, and the angle between the bin wall of the bin 100 and the horizontal plane is 70°-80°, and the specific angle can be 70°, 71°, 73°, 75°, 76°, 78°, 80°, etc. The height of the bin 100 is not more than 4 meters. Considering the adhesion and corrosion of the material, the material of the bin wall (or the inner surface thereof) can be SUS 304 stainless steel. If the temporarily stored conveying material may contain biochemical sludge and other materials with high adhesion, a high molecular liner can be added to reduce the surface friction coefficient. The above data parameters have considered various material properties to avoid arching and bridging while avoiding excessive downward pressure, which can cause excessive radial stress on the screw. In addition, the rectangular structure of the bin improves the space utilization rate, and the special bin structure is particularly suitable for the arrangement of underground bins and can meet the needs of direct truck dumping and loader feeding.
[0027] Please continue to refer to Figure 1 and Figure 2 The discharge screw device 200 in the embodiment includes at least two discharge screws 210, which are four in the illustrated embodiment. In other embodiments, the number of discharge screws can be two, three, six, or more, without being limited to four. The discharge screw 210 can be driven to rotate by a power device, such as a 7.5-15KW motor with a speed of about 1490 rpm, which is controlled by a frequency converter to achieve adjustable and controllable conveying capacity. The speed ratio of the reducer can be about 50, which is a heavy-duty gear reducer to achieve torque amplification.
[0028] In the embodiment, the discharge screw device 200 includes an even number (for example, four) of discharge screws 210 arranged symmetrically. The rotation direction of the half of the discharge screws 210 on one side is opposite to that of the half of the discharge screws 210 on the other side. The purpose of this design is to prevent the material from arching.
[0029] In addition, please refer to Figure 3 , Figure 3 is a structural schematic diagram of another embodiment of the material discharge system of the application. In the embodiment, the discharge screw device 200 includes three discharge screws 210, and the rotation directions of adjacent discharge screws 210 are opposite, which is also to prevent the material from arching.
[0030] Please refer to Figure 4 , Figure 4is a structural schematic diagram of an embodiment of the discharge screw of the present application, wherein the discharge screw 210 comprises a screw shaft 211 and screw blades 212 arranged on the outer periphery of the screw shaft 211. The outer diameter of the discharge screw 210 is 50-80 cm, and the diameter of the screw shaft 211 is 15-35 cm. The height of the screw blades 212 gradually increases along the discharge direction of the discharge screw 210 (the direction of the arrow X in the figure), that is, the height h1 of the screw blades 212 in the figure is less than the height h2 of the screw blades 212 in the figure; and the height between the head and tail screw blades 212 can gradually increase, for example, the height between adjacent screw blades 212 increases by 10%. The height of the screw blades 212 can be in the range of 5-30 cm.
[0031] In addition, in some embodiments, the structure of the discharge screw 210 can not only be that the height of the screw blades 212 changes along the discharge direction, but also that the blade pitch of the screw blades 212 changes. Please refer to Figure 5 , Figure 5 is a structural schematic diagram of another embodiment of the discharge screw of the present application, wherein the discharge screw 210 in the present embodiment also comprises a screw shaft 211 and screw blades 212 arranged on the outer periphery of the screw shaft 211. The outer diameter of the discharge screw 210 is 50-80 cm, and the diameter of the screw shaft 211 is 15-35 cm. The height of the screw blades 212 gradually increases along the discharge direction of the discharge screw 210 (the direction of the arrow X in the figure), that is, the height h1 of the screw blades 212 in the figure is less than the height h2 of the screw blades 212 in the figure; and the height between the head and tail screw blades 212 can gradually increase, for example, the height between adjacent screw blades 212 increases by 10%. The height of the screw blades 212 can be in the range of 5-30 cm.
[0032] Unlike the foregoing embodiment, the blade pitch of the screw blades 212 in the present embodiment gradually increases along the discharge direction of the discharge screw (the direction of the arrow X in the figure), that is, the blade pitch j1 of the screw blades 212 in the figure is less than the blade pitch j2 of the screw blades 212 in the figure; and the blade pitch between the head and tail screw blades 212 can gradually increase, for example, the blade pitch between adjacent screw blades 212 increases by 10%. The blade pitch of the screw blades 212 can be in the range of 15-40 cm.
[0033] The design of the variable diameter and pitch enables the material discharge system to balance the axial conveying of the entire material discharge system when conveying materials such as bark that are easy to entangle and arch, gradually and uniformly increase the conveying capacity, realize uniform and continuous discharge, and the value of the blade pitch is obtained through multiple tests and has good effect.
[0034] Alternatively, please refer to Figure 6 , Figure 6is a structural schematic diagram of a spiral blade in the embodiment of the present application. In the embodiment, the spiral blade can be a structure of a tooth-shaped blade, that is, a plurality of openings 2120 (not limited to four in the illustrated embodiment) are arranged on each circle of the spiral blade 212. The size of the opening 2120 can be 50 (depth) mm x 80 (width) mm. The size of the opening 2120 needs to be adjusted and designed according to the height of the spiral blade 212, the position of the corresponding bin 100, and the diameter of the discharge screw 210, and the like, which are not limited herein.
[0035] The teeth (that is, the parts formed between the openings 2120) on the spiral blade 212 have an arch breaking effect and can remove the part of the material adhering to the spiral wall. The tooth-shaped spiral can change the force form of the blade from a surface force to a point force, thereby reducing the probability of blockage. When conveying viscous materials, the materials can be discharged through the hollow holes to prevent overload.
[0036] The material discharge system provided by the embodiment of the present application can solve various problems commonly encountered in organic material systems such as blockage and arching by designing a large-angle bin and a discharge screw structure in which the height of the spiral blade gradually increases along the discharge direction of the discharge screw. The system is applicable in most material conveying and temporary storage scenes, and the unique spiral structure solves the problems of material winding, material sticking, and screw jamming, thereby achieving smooth material conveying.
[0037] The above only describes some embodiments of the present application, and does not limit the protection scope of the present application. Any equivalent device or equivalent process conversion using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.
Claims
1. A material discharge system, characterized by, The material discharging system comprises a hopper and a discharging screw device; the hopper is in a funnel structure, and the discharging screw device is arranged at the bottom of the hopper; the discharging screw device comprises at least two discharging screws, each of which comprises a screw shaft and screw blades arranged on the outer periphery of the screw shaft, and the height of the screw blades gradually increases along the discharging direction of the discharging screw. The rotation directions of adjacent discharging screws are opposite. Alternatively, the discharging screw device comprises an even number of discharging screws arranged symmetrically, and the rotation directions of the half of the discharging screws arranged on one side are opposite to the rotation directions of the half of the discharging screws arranged on the other side.
2. The material outfeed system of claim 1, wherein, The diameter of the top opening of the hopper is not more than 1.3 times the diameter of the bottom opening.
3. The material outfeed system of claim 2, wherein, The included angle between the wall of the hopper and the horizontal plane is 70°-80°.
4. The material outfeed system of claim 3, wherein, The inner surface of the wall of the hopper is made of stainless steel.
5. The material outfeed system of claim 3, wherein, The inner surface of the wall of the hopper is provided with a high polymer lining plate to reduce the friction.
6. The material outfeed system of claim 1, wherein, The height of the screw blades is 5-30 cm.
7. The material outfeed system of claim 1, wherein, The pitch of the screw blades gradually increases along the discharging direction of the discharging screw.
8. The material outfeed system of claim 7, wherein, A plurality of openings are arranged on each turn of the screw blades.