Electromagnetic weightlessness scale with multilayer damping function
By using a multi-layered damping structure to isolate and attenuate vibration frequencies, the accuracy and stability issues of electromagnetic weightless scales during material feeding are resolved, achieving high-precision and fast-response weighing results.
Patent Information
- Application Number
- CN202520443837.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing electromagnetic loss-in-weight scales are easily affected by impacts and vibrations during material feeding, which affects weighing accuracy and equipment stability. In particular, they are difficult to maintain high accuracy and long lifespan under complex vibration environments.
A multi-layer vibration damping structure was designed, including a weighing body vibration damper, a rubber block, a damping block, and a weighing sensor vibration damper. Through the coordinated work of the multi-layer vibration dampers, vibration frequency bands are isolated and attenuated, vibration intensity is gradually reduced, and weighing accuracy and stability are improved.
It significantly improves weighing accuracy (error less than ±0.2%) and equipment stability, reduces system response time (less than 0.5 seconds), and enhances the reliability of the equipment in complex vibration environments.
Smart Images
Figure CN223783724U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of weighing and feeding equipment, and relates to an electromagnetic weightless scale with multi-layer shock absorption. Background Technology
[0002] Material weighing is a crucial process in the batching industry for achieving accurate static and dynamic measurement. Currently, materials are typically poured into the hopper of a loss-in-weight weigher from above, which can generate significant impact forces on the hopper and weighing sensors. This not only reduces weighing accuracy but can also severely affect the stability and lifespan of the equipment. Electromagnetic loss-in-weight weighers are widely used in industrial automation due to their high precision and real-time control advantages. However, electromagnetic feeders inevitably generate vibrations during operation. Combined with external environmental factors (such as ground vibration and mechanical interference) and the impact effect of material feeding, all of these factors can interfere with the weighing system, severely affecting weighing accuracy and operational stability. Therefore, effectively reducing or eliminating the adverse effects of material impact, electromagnetic feeder vibration, and external vibrations on the metering accuracy and lifespan of electromagnetic loss-in-weight weighers has become a critical technical problem that urgently needs to be solved in this field. Summary of the Invention
[0003] To address the aforementioned problems, this invention provides an electromagnetic weightlessness scale with multi-layer damping. This weightlessness scale has a multi-layer damping structure, which can synergistically isolate vibration frequency bands and improve weighing accuracy, achieving effective isolation of multi-frequency vibrations and gradual attenuation of intensity.
[0004] According to the technical solution of this utility model: an electromagnetic weightlessness scale with multi-layer shock absorption, characterized in that: it includes a base, and the four bottom corners of the base are supported by a scale body shock absorber respectively;
[0005] A load cell is installed on the top surface of the base, and each weighing probe of the load cell is elastically connected to the base plate of the weighing body.
[0006] The feeder is elastically connected to the upper surface of the weighing body base plate through rubber blocks installed at its four corners.
[0007] A hopper support is fixed on each side of the weighing body base plate corresponding to the feeder, and the upper end of the hopper support is elastically connected to the hopper;
[0008] The lower end of the hopper is flexibly sealed to the feed inlet of the feeder.
[0009] As a further improvement of this utility model, the upper end of the hopper support is constructed with two lower shock-absorbing holes, and a shock-absorbing block is positioned in each lower shock-absorbing hole, with the lower end positioning post of the shock-absorbing block extending into the lower shock-absorbing hole;
[0010] The hopper has integrally connected ear plates at both radial ends, and an upper damping hole at each of the length ends of the ear plates. The upper positioning post of the damping block extends into the corresponding upper damping hole.
[0011] As a further improvement of this utility model, a mounting plate is fixed to each of the four bottom corners of the base, and a body vibration damper is fixedly connected to the bottom surface of each mounting plate.
[0012] As a further improvement of this utility model, the hopper support and the weighing body base plate are reinforced and connected by a reinforcing plate.
[0013] As a further improvement of this utility model, a weighing sensor vibration damper is provided between the weighing probe and the weighing body base plate.
[0014] The technical advantages of this utility model are as follows: This utility model has a reasonable and ingenious structure, addressing the problem of existing loss-in-weight scales experiencing significant impact on the symmetrical body during material feeding, leading to reduced accuracy and stability. This utility model achieves reliable shock absorption and buffering during operation by installing shock-absorbing blocks at the connection between the hopper and the hopper support, and vibration dampers at the four corners of the base. Additionally, shock-absorbing structures are installed at the bottom of the feeder and at the weighing probe of the load cell. This prevents significant impact on the loss-in-weight scale, ensuring reliable stability of the scale during weighing operations. Furthermore, through the coordinated optimization design of multiple shock-absorbing components, this application isolates the main vibration frequency band and external low-frequency vibrations, achieving a gradual attenuation of vibration intensity, thereby significantly improving the accuracy and stability of the weighing system. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0018] Figure 1The system includes a base 1, a weighing sensor 2, a weighing probe 21, a weighing body base plate 3, a feeder 4, a feeding pipe 41, a hopper support 5, a hopper 6, a flexible connection 7, a shock absorber 8, a weighing body vibration damper 9, and a rubber block 10.
[0019] like Figure 1 As shown, this utility model is an electromagnetic weightless scale with multi-layer shock absorption, including a base 1, and the four bottom corners of the base 1 are supported by a scale body shock absorber 9.
[0020] Weighing sensors 2 are installed on the top surface of the base 1, and each weighing probe 21 of the weighing sensor 2 is elastically connected to the base plate 3 of the weighing body.
[0021] The feeder 4 is elastically connected to the upper surface of the weighing body base plate 3 via rubber blocks 10 installed at its four corners. The rubber blocks 10 serve to absorb shock during operation.
[0022] A hopper support 5 is fixed on each side of the weighing body base plate 3 corresponding to the feeder 4, and the upper end of the hopper support 5 is elastically connected to the hopper 6.
[0023] The lower end of the hopper 6 is flexibly sealed to the feed inlet of the feeder 4.
[0024] The upper end of the hopper support 5 has two lower shock-absorbing holes, and a shock-absorbing block 8 is positioned in each lower shock-absorbing hole. The lower positioning post of the shock-absorbing block 8 extends into the lower shock-absorbing hole.
[0025] The hopper 6 has integrally connected ear plates at both radial ends, and an upper damping hole is provided at both ends of the ear plates in the longitudinal direction. The upper positioning post of the damping block 8 extends into the corresponding upper damping hole.
[0026] A mounting plate is fixed to each of the four bottom corners of the base 1, and a body vibration damper 9 is fixedly connected to the bottom surface of each mounting plate.
[0027] The hopper support 5 and the weighing body base plate 3 are reinforced and connected by a reinforcing plate.
[0028] A load cell vibration damper is installed between the weighing probe 21 and the weighing body base plate 3 to isolate the vibration frequency band and intensity generated during the operation of the feeder. During operation, the load cell vibration damper works in conjunction with the weighing body vibration damper 9, forming a vibration filtering system together with the rubber block 10 of the feeder 4, isolating the vibration frequency band of the feeder 4 step by step, and significantly reducing the vibration intensity transmitted to the load cell 2.
[0029] When in operation, this invention can achieve the effects of frequency band isolation, gradual intensity attenuation, and improved dynamic stability; specifically:
[0030] Frequency band isolation: The electromagnetic feeder's built-in shock absorber initially isolates the main vibration sources in the range of 40 Hz to 120 Hz; the weighing sensor shock absorber further isolates vibrations in this frequency band and reduces their intensity; the weighing body shock absorber isolates external low-frequency vibrations below 40 Hz and supplements the absorption of vibration transmission from the electromagnetic feeder.
[0031] Gradual intensity reduction: The vibration intensity is gradually reduced to less than 10% of its original intensity by the multi-layer damper. The rubber block 10 of the feeder 4 initially isolates the main vibration source from 40 Hz to 120 Hz; the vibration frequency band is further isolated and its intensity is reduced by the damper of the weighing sensor; finally, the weighing body damper 9 isolates external low-frequency vibrations and helps reduce the vibration transmission of the feeder 4, thus enabling it to adapt to complex vibration environments.
[0032] Improved dynamic stability: The synergistic effect of multi-layer shock absorbers significantly improves dynamic weighing accuracy (error less than ±0.2%), while reducing system response time (less than 0.5 seconds).
[0033] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.
Claims
1. An electromagnetic weightlessness scale with multi-layer shock absorption, characterized in that: Includes a base (1), the bottom four corners of which are supported by a body vibration damper (9); A weighing sensor (2) is installed on the top surface of the base (1), and each weighing probe (21) of the weighing sensor (2) is elastically connected to the weighing body base plate (3); The feeder (4) is elastically connected to the upper surface of the weighing body base plate (3) through rubber blocks (10) installed at the four corners of its bottom; A hopper support (5) is fixed on each side of the weighing body base plate (3) corresponding to the feeder (4), and the upper end of the hopper support (5) is elastically connected to the hopper (6). The lower end of the hopper (6) is flexibly sealed to the feed inlet of the feeder (4).
2. The electromagnetic weightlessness scale with multi-layer shock absorption as described in claim 1, characterized in that: The upper end of the hopper support (5) is constructed with two lower shock-absorbing holes, and a shock-absorbing block (8) is positioned in each lower shock-absorbing hole. The lower end positioning post of the shock-absorbing block (8) extends into the lower shock-absorbing hole. The hopper (6) has integrally connected ear plates at both radial ends, and an upper shock-absorbing hole is provided at both ends of the ear plates in the length direction. The upper positioning post of the shock-absorbing block (8) extends into the corresponding upper shock-absorbing hole.
3. The electromagnetic weightlessness scale with multi-layer shock absorption as described in claim 1, characterized in that: A mounting plate is fixed at each of the four bottom corners of the base (1), and a body vibration damper (9) is fixedly connected to the bottom surface of each mounting plate.
4. The electromagnetic weightlessness scale with multi-layer shock absorption as described in claim 1, characterized in that: The hopper support (5) and the weighing body base plate (3) are reinforced and connected by a reinforcing plate.
5. The electromagnetic weightlessness scale with multi-layer shock absorption as described in claim 1, characterized in that: A weighing sensor vibration damper is provided between the weighing probe (21) and the weighing body base plate (3).