Arch breaking device on spiral conveying equipment and spiral conveying equipment
By installing a tooth-like structure on the spiral blades of the spiral conveying equipment, the problem of forming the arch bridge in the silo is solved, the normal operation of the spiral conveying equipment is restored, and it is suitable for food waste disposal.
Patent Information
- Application Number
- CN202422218265.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-11
AI Technical Summary
During the process of kitchen waste disposal, the materials in the silo are prone to form an arch bridge structure, resulting in idle rotation of the spiral conveying equipment, affecting the processing efficiency. Existing processes such as manual poking, air cannon and vibrating material shaking cannot completely solve this problem.
The tooth-like structure is installed on the spiral blades of the spiral conveying equipment. The bottom surface of the tooth-like structure is welded on the spiral blades. The teeth tip is axial toward the spiral body and is located on the back of the material facing surface. It is triangular, trapezoidal or conical, and is used to destroy the arch bridge structure.
Effectively destroy the arch bridge structure and restore the conveying function of the spiral conveying equipment. It is especially suitable for kitchen waste containing long fibers or long plastics, improves conveying efficiency, reduces labor intensity and maintenance needs.
Smart Images
Figure CN223086877U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an arch-breaking device on a screw conveyor and a screw conveyor, in particular to an arch-breaking device and a screw conveyor for the bottom screw conveyor of a kitchen waste silo. Background Art
[0002] In the kitchen waste treatment project, when the material exceeds the maximum hourly processing capacity designed by the process during the peak garbage transportation period, generally a large-volume silo is required to temporarily store the incoming material. Due to various reasons, arching occurs to the material in the silo, making the material unable to be normally discharged from the silo, seriously affecting the kitchen waste treatment efficiency and also preventing the silo from functioning properly.
[0003] To solve these problems, the most commonly used process measures or process equipment are manual poking, air cannons, mechanical vibration for discharging materials, etc. However, these process measures and process equipment all have various problems and cannot completely solve the problem of material agglomeration and arching in the silo: for example, manual poking has problems such as high labor intensity, high danger, and small action range; air cannons have a limited action range and are prone to damage and difficult to repair in harsh environments; the vibration method for discharging materials has a limited action range, can only act on a local range, and has high requirements for the installation position of the vibration device. Summary of the Utility Model
[0004] To solve the above problems, the purpose of the utility model is to provide an arch-breaking device on a screw conveyor.
[0005] The purpose of the utility model is achieved by the following technical solutions:
[0006] An arch-breaking device on a screw conveyor, the arch-breaking device is installed on the screw blade of the screw conveyor, the arch-breaking device includes a toothed structure, and the bottom surface of the toothed structure is installed on the screw blade.
[0007] Further, N toothed structures are arranged at intervals and evenly along the circumferential direction of each screw blade, where 0 < N < 10.
[0008] Further, the tooth tip direction of the toothed structure is parallel to the axial direction of the screw body of the screw conveyor.
[0009] Further, the installation position of the toothed structure is on the back of the material-facing surface of the screw blade.
[0010] Further, the installation position of the toothed structure is flush with the outer edge of the screw blade.
[0011] Further, the toothed structure is in the shape of a triangular tooth or a trapezoidal tooth or a conical tooth.
[0012] Further, the material receiving surface of the tooth-shaped structure is an inclined surface and is inclined towards the center of the spiral blade.
[0013] Further, the size of the tooth-shaped structure is adjusted according to the outer diameter of the spiral of the screw conveyor or the pitch of the screw conveyor.
[0014] Further, an obtuse angle is formed between the material receiving surface of the tooth-shaped structure and the spiral blade where the bottom surface of the tooth-shaped structure is located.
[0015] A screw conveyor, the screw conveyor is a single-screw, double-screw or multi-screw structure, and is provided with the arch-breaking device described above.
[0016] The beneficial effects of the present utility model are as follows:
[0017] The arch-breaking device on a screw conveyor provided by the present utility model can break the arch structure formed by materials by installing a certain number of tooth-shaped structures on the spiral blade, relieve or even eliminate the phenomenon that the arch bridge is on the spiral blade and cannot enter between adjacent blades, resulting in the screw idling. This device is particularly suitable for transporting a large amount of materials such as kitchen waste that are piled up and contain long fibrous vegetable leaves, vegetable stalks, vegetable garbage or long plastics and are prone to agglomerate to form an arch structure. Description of the Drawings
[0018] Figure 1 Schematic structural diagram of an arch-breaking device with a triangular tooth-shaped structure on a single-screw conveyor provided by an embodiment of the present utility model;
[0019] Figure 2 Schematic structural diagram of an arch-breaking device with a triangular tooth-shaped structure on a single-screw conveyor provided by another embodiment of the present utility model;
[0020] Figure 3 Schematic structural diagram of an arch-breaking device with a trapezoidal tooth-shaped structure on a single-screw conveyor provided by another embodiment of the present utility model;
[0021] Figure 4 Schematic structural diagram of an arch-breaking device with a triangular tooth-shaped structure on a double-screw conveyor provided by another embodiment of the present utility model;
[0022] Figure 5 Schematic diagram of the triangular tooth-shaped structure described in the present utility model;
[0023] Figure 6 Schematic diagram of the trapezoidal tooth-shaped structure described in the present utility model;
[0024] Figure 7 Schematic diagram of the triangular tooth-shaped structure with an inclined material receiving surface described in the present utility model;
[0025] Among them, 1 - tooth - shaped structure, 2 - spiral blade, 3 - helix, 11 - inner side surface of the tooth - shaped structure, 12 - outer side surface of the tooth - shaped structure, 13 - bottom surface of the tooth - shaped structure, 21 - material - receiving surface of the spiral blade. Specific embodiments
[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0027] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.
[0028] In addition, in the description of the present utility model, the used terms are only for the purpose of illustration and are not intended to limit the scope of the present utility model. The terms "comprise" and / or "include" are used to specify the existence of the described elements, steps, operations, and / or components, but do not exclude the existence or addition of one or more other elements, steps, operations, and / or components. The terms "first", "second", etc. may be used to describe various elements, do not represent an order, and do not limit these elements. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more. These terms are only used to distinguish one element from another. With reference to the following drawings, these and / or other aspects become obvious, and those of ordinary skill in the art will more easily understand the description of the embodiments of the present utility model. The drawings are only for the purpose of illustration to depict the embodiments of the present utility model. Those skilled in the art will easily recognize from the following description that alternative embodiments of the structure and method shown in the present utility model can be adopted without departing from the principles of the present utility model.
[0029] In the treatment of restaurant kitchen waste, after the original materials are transported to the waste treatment plant, they are poured into silos for storage. The original materials of restaurant kitchen waste contain a large amount of piled oil, long fibrous vegetable leaves and stems, vegetable waste or long plastic. Due to the mutual accumulation and squeezing of large and hard garbage, the restaurant kitchen waste materials in the silo are easily suspended and agglomerated, and finally form an overhead arch bridge structure, that is, it is easy to accumulate into an arch shape on the outer edge of the spiral of the spiral conveying equipment. As the materials accumulate, the arch structure becomes stronger and stronger. If there is no external force, the arch structure is difficult to be destroyed. The material poured into the silo again can only fall on the arch bridge, but not on the spiral body, causing the spiral body to keep moving relative to the arch bridge formed by the fibrous material, that is, the spiral body is always idling, which destroys the conveying function of the screw conveyor.
[0030] The utility model aims to provide an arch breaking device on a spiral conveying device, which is mainly used in the technical field of restaurant kitchen waste treatment in the environmental protection industry.
[0031] like Figure 1 As shown, an arch-breaking device on a spiral conveying device is installed on a spiral blade on a spiral conveying device at the bottom of a kitchen waste silo. The arch-breaking device includes a plurality of tooth structures, and the bottom surface of the tooth structure is installed on the spiral blade. The installation method can be selected as welding, and the welding construction is simple. The tooth structure is welded firmly and is not easy to be damaged. There is no need for high-frequency maintenance, and there is no need to take immediate measures to re-weld due to the detachment of individual tooth structures. After the tooth structure is installed on the spiral blade, the tooth structure will hook the plastic bag or long strip material protruding from the arch structure during the movement of the spiral body, so that the plastic bag breaks, and the material in the plastic bag is scattered between the adjacent spiral blades, or through the pulling effect of the hooked long strip material, pull other materials in the arch structure to fall down, thereby destroying the already formed arch structure. Under the action of the continuous tooth structure, the material on the arch structure is hooked into the middle of the two spiral blades of the spiral conveyor, which can quickly destroy the arch bridge structure and restore the material conveying function of the spiral conveyor.
[0032] An optional implementation manner, each spiral blade is provided with N tooth-like structures spaced and evenly arranged along its circumference, 0<N<10. The number of tooth-like structures installed on each spiral blade may be equal or unequal. Generally, it is possible to consider installing multiple tooth-like structures on each spiral blade, and the number of tooth-like structures is adjusted according to the outer diameter of the spiral blade to achieve appropriate density, and they are installed continuously in the length direction of the spiral body. If the number of tooth-like structures installed on a single spiral blade is too large, it will cause waste of materials and increase unnecessary construction volume. If the number of tooth-like structures is too small, the arched structure formed on the upper end or side of the spiral body cannot be destroyed in time within the effective time of transportation, thereby reducing the transportation efficiency.
[0033] The size of the toothed structure can be adjusted according to the outer diameter of the spiral of the screw conveyor, the inner hole diameter, and the pitch of the screw of the screw conveyor. In an alternative embodiment, the size of the toothed structure can be set as follows: the base length a = the outer diameter of the spiral × (0.1 - 0.25), the height h = the outer diameter of the spiral × (0.15 - 0.35), and the thickness is 6mm ≤ b ≤ 12mm. The base length a, the height h, and the thickness b are as Figure 1 referred to in. If the toothed structure is too large, on the one hand, it will reduce the probability of the material falling into the space between adjacent spiral blades, and on the other hand, it will cause waste of materials; if the toothed structure is too small, it will not be able to play the role of hooking the material. Only when the agglomerated material is hooked down by the toothed structure and falls into the gap between adjacent spiral blades of the screw conveyor can the material be conveyed away.
[0034] In an alternative embodiment, the tooth tips of the toothed structure are parallel to the axial direction of the spiral of the screw conveying device, which can make the material hold the material as much as possible during rotation, improve the arch-breaking efficiency, and thus facilitate the conveying of the material. In addition, setting the installation position of the toothed structure flush with the outer edge of the spiral blade can make the toothed structure hold the material on the outer periphery of the spiral blade, which can further ensure the arch-breaking effect.
[0035] In an alternative embodiment, the installation position of the toothed structure 1 is on the back of the material-facing surface 21 of the spiral blade. The material-facing surface 21 of the spiral blade is as Figure 1 shown, which is the main stress surface of the spiral blade 2. Setting the toothed structure on the back of the material-facing surface 21 of the spiral blade can delay or hinder the formation of the arch structure above the spiral without damaging the normal conveying function of the screw conveyor. If the toothed structure 1 is installed on the same side as the material-facing surface 21 of the spiral blade, it will hinder the material in the silo from entering the space formed by adjacent two blades of the screw conveyor, causing interference to the material conveying and affecting the normal conveying function of the screw conveyor.
[0036] In an alternative embodiment, as Figure 5 and Figure 6 shown, the toothed structure is in the shape of a triangular tooth or a trapezoidal tooth. Considering material saving, arch-breaking effect, simple processing, and cost saving, the toothed structure is preferably a triangular tooth structure. In addition, the toothed structure can also be a conical tooth. Figure 1 and 2 shown is a schematic structural diagram of an arch-breaking device with a triangular tooth structure installed on a single-screw conveying device, Figure 3 shown is a schematic structural diagram of an arch-breaking device with a trapezoidal tooth structure installed on a single-screw conveying device.
[0037] In an alternative embodiment, as Figure 1 、 2As shown in FIGS. 6 and 7, the triangular tooth-like structure includes a front X surface and a back Y surface, where the X surface is parallel to the Y surface, and there are three side surfaces between the X surface and the Y surface, namely an inner side surface 11, an outer side surface 12, and a bottom side surface 13. The inner side surface 11 faces the center of the spiral blade along the conveying direction of the spiral blade, and it is the material-receiving surface of the tooth-like structure. Preferably, in the present invention, the material-receiving surface of the tooth-like structure is set to have a certain slope. Preferably, the material-receiving surface of the tooth-like structure is inclined towards the center of the spiral blade. The inclination angle can be set according to actual use conditions. For example, the X surface can be set to be smaller than the Y surface, so that the material-receiving surface of the tooth-like structure is in a blade shape, which is convenient for hooking the material, making the material be hooked and not easily fall off during the rotation process, facilitating the conveying of the material and improving the arch-breaking effect. Preferably, in the present invention, an obtuse angle is provided between the material-receiving surface of the tooth-like structure and the spiral blade where the bottom surface of the tooth-like structure is located, so as to avoid forming a solid material mass between the material-receiving surface of the tooth-like structure and the spiral blade during the rotation process, squeezing between the material-receiving surface of the tooth-like structure and the spiral blade where the bottom surface of the tooth-like structure is located, damaging the tooth tip structure of the tooth-like structure, and reducing the use effect of the tooth-like structure.
[0038] The present invention also provides a screw conveyor, which is a single-screw, double-screw or multi-screw structure, and is provided with the above-mentioned arch-breaking device. As Figure 4 shown, it is a double-screw conveyor provided with an arch-breaking device.
[0039] By installing a certain number of tooth-like structures 1 at appropriate positions on the spiral blade 2 of the present invention, the arch structure formed during the screw conveying at the bottom of the silo can be destroyed and removed, avoiding that during the screw conveying at the bottom of the silo, the screw body 3 rotates around the arch formed above the screw body or on the side surface of the multi-screw conveyor, resulting in only the relative movement between the screw body and the arch. The newly entered material in the silo can only continue to fall on the arch and cannot enter between the two spiral blades. The screw body 3 has been idling, losing the conveying function of the screw. This structure is particularly suitable for conveying a large amount of materials such as kitchen waste containing long fibrous vegetable leaves, vegetable stalks, vegetable garbage, or long plastics that are prone to agglomeration and form an arch structure.
[0040] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.
[0041] In addition, those of ordinary skill in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present utility model and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.
[0042] Those skilled in the art should understand that although the present utility model has been described with reference to exemplary embodiments, various changes can be made and its elements can be replaced with equivalents without departing from the scope of the present utility model. In addition, many modifications can be made to adapt a particular situation or material to the teachings of the present utility model without departing from the substantial scope of the present utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed, but the present utility model will include all embodiments falling within the scope of the appended claims.
Claims
1. An arch-breaking device on a spiral conveying device, characterized in that The arch-breaking device is installed on the spiral blade of the spiral conveying device. The arch-breaking device includes a toothed structure. The bottom surface of the toothed structure is installed on the spiral blade, and the tooth tips of the toothed structure are oriented parallel to the axial direction of the spiral of the spiral conveying device.
2. The arch-breaking device on a screw conveyor according to claim 1, characterized in that N toothed structures are arranged at intervals and evenly along the circumference of each spiral blade, where 0 < N < 10.
3. The arch-breaking device on a screw conveyor according to claim 1, characterized in that, The installation position of the toothed structure is on the back of the material-facing surface of the spiral blade.
4. The arch-breaking device on a screw conveyor according to claim 1, characterized in that, The installation position of the toothed structure is flush with the outer edge of the spiral blade.
5. The arch-breaking device on a screw conveyor according to claim 1, characterized in that, The toothed structure is in the shape of a triangular tooth, a trapezoidal tooth, or a conical tooth.
6. The arch-breaking device on a screw conveyor according to claim 1, characterized in that The material-facing surface of the toothed structure is an inclined surface and is inclined towards the center of the spiral blade.
7. The arch-breaking device on a screw conveyor according to claim 1, characterized in that, The size of the toothed structure is adjusted according to the outer diameter of the spiral of the spiral conveying device or the pitch size of the spiral conveying device.
8. The arch-breaking device on a screw conveyor according to claim 1, characterized in that, An obtuse angle is formed between the material-facing surface of the toothed structure and the spiral blade where the bottom surface of the toothed structure is located.
9. A screw conveyor device, characterized in that, The spiral conveying device is of a single-spiral, double-spiral, or multi-spiral structure and is provided with the arch-breaking device according to any one of claims 1-8.