A knock structure of a rotary drum inner wall
By designing a support and flexible layer spring structure at the discharge hopper of the rotary drum equipment, the problems of large vibration, poor material discharge, and easy blockage of the discharge hopper are solved, resulting in less vibration, more efficient material discharge, and improved equipment durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIMIAN TIANYU TECH CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-07
AI Technical Summary
The discharge hopper of the existing rotary drum equipment vibrates greatly when struck, resulting in poor material discharge, easy clogging, and the need to increase the striking force, which affects the equipment's lifespan and cost.
A drum inner wall striking structure is designed, including a support, a striking device and a flexible layer. The support consists of an upper ring, a lower ring and a support rod. The side of the discharge funnel is provided with a groove to form a spring sheet structure. The flexible layer is tightly fitted to the inner wall. The striking device is fixed by detachable fasteners. The shock-absorbing pad and rubber head buffer vibration and noise.
It reduces vibration and noise, improves material feeding efficiency, prevents material blockage, extends equipment lifespan, and reduces maintenance and operating costs.
Smart Images

Figure CN224467047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of drum equipment, specifically to a drum inner wall striking structure. Background Technology
[0002] During the operation of the rotary drum equipment, the material discharge effect of the discharge funnel directly affects the overall working efficiency of the equipment. In the existing technology, the discharge funnel is mostly a one-piece structure. In actual use, in order to ensure that the material falls smoothly, the discharge funnel needs to be struck.
[0003] However, the integrated discharge hopper vibrates significantly when struck, generating considerable noise that disrupts the working environment. Furthermore, the discharge efficiency is less than ideal, and material easily clogs the hopper. To resolve this clogging issue, increased striking force is often required, which further accelerates wear and tear, shortens the equipment's lifespan, and increases maintenance and operating costs.
[0004] Therefore, this paper addresses the technical problems of existing discharge hoppers, such as excessive impact vibration, poor material discharge effect, easy clogging, and the need to increase the impact force. Utility Model Content
[0005] The purpose of this invention is to provide a drum inner wall striking structure that can effectively solve the technical problems of large vibration, poor material feeding effect, easy blockage, and need to increase the striking force in the existing material funnel striking technology.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] A drum inner wall striking structure includes a bracket for installation at the drum discharge hopper. The bracket consists of an upper ring, a lower ring, and several support rods connected to the upper and lower rings, arranged coaxially. A striking device is mounted on the support rods and fixed to the support rods by detachable fasteners. Several grooves are provided on the side of the discharge hopper, forming an elastically vibrating spring structure on the side of the discharge hopper. The striking device is mounted on the support rods, corresponding to and in contact with the formed spring structure. The inner wall of the discharge hopper is covered with a flexible layer that fits tightly against the inner wall of the discharge hopper.
[0008] In one embodiment of this utility model, the spring sheet structure is evenly distributed along the circumference of the discharge funnel. This allows for more uniform vibration of various parts of the discharge funnel when the spring sheet structure is struck, thereby ensuring that the material falls smoothly at various positions within the funnel and further improving the feeding effect.
[0009] In one embodiment of this utility model, the flexible layer is made of rubber, silicone, or polyurethane, and has a thickness of 1-5 mm. Rubber, silicone, and polyurethane all possess good elasticity and wear resistance, enabling them to buffer the material during its descent and reduce impact and wear on the inner wall of the discharge funnel. Simultaneously, a suitable thickness range ensures the buffering effect of the flexible layer without excessively affecting the effective discharge space of the discharge funnel.
[0010] In one embodiment of this utility model, the striking device is an electric hammer or a pneumatic hammer, with a striking frequency of 5-50 times / second and a striking force that can be adjusted within the range of 10-50N.
[0011] In one embodiment of this utility model, the bracket is made of stainless steel and has an anti-corrosion coating on its surface.
[0012] In one embodiment of this utility model, a shock-absorbing pad is provided between the striking device and the support rod. The shock-absorbing pad can effectively absorb the vibration generated by the striking device during operation, reduce the transmission of vibration to the support and other parts of the drum, thereby reducing the vibration and noise of the overall equipment and protecting other components of the equipment.
[0013] In one embodiment of the present invention, the upper ring is provided with a plurality of mounting holes for connecting with the rotating drum.
[0014] In one embodiment of this utility model, a rubber head is provided on the side of the striking device that contacts the spring structure. The rubber head has a certain elasticity and can play a buffering role when the striking device contacts the spring structure, reducing rigid collisions between the two, reducing noise and wear, while ensuring that the striking force can be effectively transmitted to the spring structure.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] This invention utilizes a groove on the side of the discharge funnel to form a spring-loaded structure. When the striking device strikes this spring-loaded structure, it generates elastic vibration. Compared to striking a one-piece funnel, this vibration is less intense and more effectively promotes material flow, increasing the discharge rate. The flexible layer on the inner wall of the discharge funnel reduces friction and adhesion between the material and the funnel wall, further preventing material blockage and leakage from the groove. The striking device is detachably fixed to the support rod for easy installation, maintenance, and replacement. The bracket is made of stainless steel with an anti-corrosion coating, improving structural durability. The shock-absorbing pads between the striking device and the support rod, as well as the rubber head on the striking device, further reduce vibration and noise, minimizing equipment wear. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0019] Figure 2 This utility model Figure 1 The main view.
[0020] Figure label:
[0021] 101 Discharge funnel, 102 Support, 103 Upper ring, 104 Lower ring, 105 Support rod, 106 Striking device, 107 Groove, 108 Spring structure, 109 Rubber head. Detailed Implementation
[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0023] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.
[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0025] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.
[0026] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.
[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0029] Example 1:
[0030] See Figure 1 and Figure 2This embodiment discloses a drum inner wall striking structure, including a bracket 102 for installation at the drum discharge hopper 101. The bracket 102 consists of an upper ring 103, a lower ring 104 coaxially arranged, and four support rods 105 connecting the upper ring 103 and the lower ring 104. A striking device 106, which is an electric hammer, is provided on the support rods 105 and fixed to the support rods 105 by bolts (detachable fasteners). The discharge hopper 101 has four grooves 107 on its side, forming four elastically vibrating spring structures 108 on the side of the discharge hopper 101. The spring structures 108 are arranged along... The discharge funnel 101 is evenly distributed around its circumference; the striking device 106 corresponds to and contacts the formed spring structure 108, and a rubber head 109 is provided on the side of the striking device 106 that contacts the spring structure 108; the inner wall of the discharge funnel 101 is covered with a 3mm thick flexible rubber layer, which fits tightly against the inner wall of the discharge funnel 101; the support 102 is made of stainless steel and has an anti-corrosion coating on its surface; a shock-absorbing pad is provided between the striking device 106 and the support rod 105; the upper ring 103 has 4 mounting holes for connecting with the drum; the electric hammer's striking frequency is 20 times / second, and the striking force is adjustable to 30N.
[0031] In use, the bracket 102 is installed at the discharge hopper 101 of the rotary drum through the mounting hole on the upper ring 103, so that the striking device 106 makes corresponding contact with the spring structure 108. The electric hammer is started, and it strikes the spring structure 108 at the set frequency and force, causing the spring structure 108 to vibrate elastically, thus promoting the smooth falling of material into the discharge hopper 101. The flexible layer reduces the adhesion of material to the inner wall of the hopper, and the shock-absorbing pad and rubber head 109 reduce vibration and noise.
[0032] Example 2:
[0033] This embodiment discloses a drum inner wall striking structure, including a bracket 102 for installation at the drum discharge hopper 101. The bracket 102 consists of an upper ring 103, a lower ring 104 coaxially arranged, and six support rods 105 connecting the upper ring 103 and the lower ring 104. A striking device 106, which is a pneumatic hammer, is provided on the support rods 105 and fixed to the support rods 105 by screws. Six grooves 107 are provided on the side of the discharge hopper 101, forming six elastically vibrating spring structures 108 on the side of the discharge hopper 101. The spring structures 108 extend along the discharge hopper 101. 01. The components are evenly distributed circumferentially; the striking device 106 corresponds to and contacts the formed spring structure 108, and a rubber head 109 is provided on the side of the striking device 106 that contacts the spring structure 108; the inner wall of the discharge funnel 101 is covered with a flexible silicone layer with a thickness of 1mm, and the flexible layer is tightly attached to the inner wall of the discharge funnel 101; the support 102 is made of stainless steel and has an anti-corrosion coating on its surface; a shock-absorbing pad is provided between the striking device 106 and the support rod 105; the upper ring 103 has 6 mounting holes for connecting with the drum; the striking frequency of the pneumatic hammer is 5 times / second, and the striking force is adjustable to 10N.
[0034] This example is suitable for materials with low viscosity and fine particles. Lower tapping frequency and force are sufficient to ensure the material falls smoothly, while minimizing vibration and noise.
[0035] Example 3:
[0036] This embodiment discloses a drum inner wall striking structure, including a bracket 102 for installation at the drum discharge hopper 101. The bracket 102 consists of an upper ring 103, a lower ring 104 coaxially arranged, and three support rods 105 connecting the upper ring 103 and the lower ring 104. A striking device 106, which is an electric hammer, is provided on the support rods 105 and is fixed to the support rods 105 by a snap fastener. The discharge hopper 101 has three grooves 107 on its side, forming three elastically vibrating spring structures 108 on the side of the discharge hopper 101. The spring structures 108 extend along the discharge hopper 101. The components are evenly distributed circumferentially; the striking device 106 corresponds to and contacts the formed spring structure 108, and a rubber head 109 is provided on the side of the striking device 106 that contacts the spring structure 108; the inner wall of the discharge funnel 101 is covered with a 5mm thick flexible polyurethane layer, which fits tightly against the inner wall of the discharge funnel 101; the support 102 is made of stainless steel and has an anti-corrosion coating on its surface; a shock-absorbing pad is provided between the striking device 106 and the support rod 105; the upper ring 103 has three mounting holes for connecting to the drum; the electric hammer's striking frequency is 50 times / second, and the striking force is adjustable to 50N. This example is suitable for situations where the material is highly viscous and prone to clogging. The higher striking frequency and force can effectively promote the falling of highly viscous materials, ensuring smooth material discharge.
[0037] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A drum inner wall striking structure, comprising a bracket for installation at the drum discharge hopper, characterized in that: The bracket consists of an upper ring, a lower ring, and several support rods connected to the upper and lower rings, arranged coaxially. A striking device is mounted on the support rods and is fixed to the support rods by detachable fasteners. The discharge funnel has several grooves on its side, forming a spring-like structure that can vibrate elastically. A striking device is provided on the support rod, which corresponds to and contacts the formed spring-like structure. The inner wall of the discharge funnel is covered with a flexible layer that fits tightly against the inner wall of the discharge funnel.
2. The drum inner wall striking structure according to claim 1, characterized in that: The spring-loaded structure is evenly distributed along the circumference of the discharge funnel.
3. The drum inner wall striking structure according to claim 1, characterized in that: The flexible layer is made of rubber, silicone, or polyurethane, and has a thickness of 1-5 mm.
4. The drum inner wall striking structure according to claim 1, characterized in that: The striking device is an electric hammer or a pneumatic hammer, with a striking frequency of 5-50 times / second and a striking force that can be adjusted within the range of 10-50N.
5. The drum inner wall striking structure according to claim 1, characterized in that: The bracket is made of stainless steel and has an anti-corrosion coating on its surface.
6. The drum inner wall striking structure according to claim 1, characterized in that: A shock-absorbing pad is installed between the striking device and the support rod.
7. The drum inner wall striking structure according to claim 1, characterized in that: The upper ring has several mounting holes for connecting to the drum.
8. A drum inner wall percussion structure according to any one of claims 1-7, characterized in that: A rubber head is provided on the side of the striking device that contacts the spring structure.