Material accumulation prevention hopper scale
By designing a scraper trolley system in the hopper scale, the accumulated material on the inner wall of the hopper is solved, the weighing error problems caused by material bonding and accumulation are improved, weighing accuracy and production efficiency are improved, and are suitable for a variety of material characteristics.
Patent Information
- Application Number
- CN202422356176.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-26
AI Technical Summary
In industrial production, materials are prone to clumping into groups due to water vapor or factors during production, or accumulate on the inner wall of the hopper, resulting in weighing errors and normal working of the scale body.
A hopper scale including a fixing bracket, a cutting grille, a hopper, a scraper and a cart was designed. The scraper moves along the inner wall of the hopper through the movement of the cart, removing the accumulated material, ensuring that each weighing is based on the actual amount of material.
It significantly reduces the residue of materials on the inner wall of the hopper, ensures weighing accuracy, improves production efficiency, reduces maintenance costs, and is suitable for a variety of material characteristics.
Smart Images
Figure CN223015469U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of industrial production, and particularly relates to a hopper scale for preventing material accumulation. Background Art
[0002] In industrial production, weighing of bulk materials is a common requirement. As a commonly used weighing device, the accuracy and reliability of a hopper scale are crucial for the production process. However, during the shipping or production conveying of materials, the materials are prone to sticking together into lumps due to water vapor in sea transportation or factors in the production process, which may block the discharge port of the hopper scale or accumulate on the hopper wall and corners of the hopper scale, resulting in weighing errors and even affecting the normal operation of the scale body. The existing hopper scales with smooth guiding plates cannot perfectly solve this problem. Content of the Utility Model
[0003] The purpose of the utility model is to provide a hopper scale for preventing material accumulation, which significantly reduces the residue of materials on the inner wall of the hopper and clears the materials in dead corners, ensuring that each weighing is based on the actual amount of materials.
[0004] The above technical purpose of the utility model is achieved through the following technical solutions:
[0005] A hopper scale for preventing material accumulation, characterized in that it includes a fixed bracket, a cutting grid, a hopper, a scraper and a trolley. The hopper is a frustum-shaped structure with openings at both the top and bottom. The cutting grid and the hopper are both installed inside the fixed bracket. The cutting grid is installed above the upper opening of the hopper. An installation support is provided in the middle of the fixed bracket, and multiple groups of weighing sensors are vertically arranged inside the installation support. The outer wall of the hopper is fixedly connected to the upper part of the weighing sensors. The trolley is rotatably installed around the top of the hopper, and the scraper is closely arranged on the inner wall of the hopper. The top of the scraper is adjustably installed below the trolley.
[0006] Preferably, a number of rectangular cutting openings are provided inside the cutting grid.
[0007] Preferably, a pneumatic discharge valve is provided at the outlet at the bottom of the hopper.
[0008] Preferably, a set of closed annular seats are provided on both the inner and outer walls of the top of the hopper at the same height. The inner and outer sets of closed annular seats and the side wall of the hopper between them are fixed by bolts. Track guiding plates are laid above both the inner and outer sets of closed annular seats, and the trolley travels along the track guiding plates.
[0009] Preferably, the trolley comprises a main frame, traveling wheels and a driving motor. The main frame is in a C shape with an open bottom. The traveling wheels are installed below the main frame on both sides of the side wall of the hopper. The traveling wheels travel along the crawler guide plate. The traveling wheels on the outer side of the side wall of the hopper are drivingly connected to the output end of the driving motor through a transmission belt and a transmission wheel. The driving motor is arranged inside the main frame on the outer side of the side wall of the hopper.
[0010] Preferably, at least two groups of guide wheels are arranged on both sides of the side wall of the hopper inside the main frame. The guide wheels are in rolling fit with both sides of the side wall of the hopper.
[0011] Preferably, a mounting seat is further installed inside the main frame on the inner side of the side wall of the hopper. The connection between the top of the mounting seat and the main frame is adjusted in angle and fixed by bolts.
[0012] Preferably, a plate groove is formed on one side of the mounting seat close to the inner wall of the hopper. One side of the scraper is movably installed in the plate groove.
[0013] Preferably, two groups of movable grooves are arranged on both sides of the plate groove inside the mounting seat. A guide post is arranged inside each group of movable grooves. Both sides of the scraper are limited to move along the movable grooves and the guide posts. A spring is arranged outside the guide post in the movable groove. One end of the spring is always pressed against the scraper.
[0014] Preferably, a gap is arranged between the scraper and the inner wall of the hopper. The scraper and the inner wall of the hopper are arranged at a relative oblique angle.
[0015] In summary, the present utility model has the following beneficial effects:
[0016] The movement of the scraper trolley drives the movement of the scraper in the present utility model, significantly reducing the residue of materials on the inner wall of the hopper and removing the materials in the dead corners, ensuring that each weighing is based on the actual amount of materials.
[0017] The implementation of the present utility model improves the production efficiency. Through the continuous or periodic action of the scraper trolley, the downtime for cleaning caused by material accumulation is reduced, thus accelerating the production process.
[0018] The design of the scraper and the mounting seat in the present utility model is easy to disassemble and replace. When the scraper is worn or damaged, it can be quickly replaced without affecting the production progress.
[0019] The present utility model is applicable to various materials with different characteristics. Whether it is agglomerated lumpy ore or wet particles, the scraper can effectively prevent them from accumulating on the inner wall of the hopper, ensuring the wide applicability of the weighing system.
[0020] The utility model not only improves the weighing accuracy, but also enhances the production efficiency, reduces the maintenance cost, and has good adaptability, bringing significant technological progress to the anti-congestion and maintenance treatment of the hopper scale. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 is a schematic diagram of the structure at position A of the utility model;
[0023] Figure 3 is a schematic diagram of the structure at position B of the utility model;
[0024] Figure 4 is a schematic diagram of the cutting grid structure of the utility model;
[0025] Figure 5 is a schematic diagram of the relative position between the scraper and the inner wall of the hopper of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] The following further describes the specific embodiments of the utility model with reference to the drawings. This embodiment does not constitute a limitation to the utility model.
[0027] As Figures 1 to 5 shown, a hopper scale for preventing material accumulation includes a fixed support 1, a cutting grid 2, a hopper 3, a scraper 4 and a trolley 5. The fixed support 1 is composed of a steel structure with high hardness and strong impact resistance, and is assembled in a grid pattern to prevent collision with a grab or other transportation devices. The hopper 3 has an inverted conical structure with openings at both the top and bottom. The cutting grid 2 and the hopper 3 are both installed inside the fixed support 1. The cutting grid 2 is installed above the upper opening of the hopper 3. An installation support 6 is provided in the middle of the fixed support 1, and multiple groups of weighing sensors 7 are vertically arranged inside the installation support 6. The outer wall of the hopper 3 is fixedly connected to the upper part of the weighing sensors 7. The trolley 5 is rotatably installed around the top of the hopper 3. The scraper 4 is closely arranged along the inner wall of the hopper 3, and the top of the scraper 4 is adjustably installed below the trolley 5.
[0028] The cutting grid 2 is provided with several groups of rectangular cutting openings 8. The cutting grid 2 is made of stainless steel, and the size of the rectangular cutting openings 8 can be adjusted according to the situation.
[0029] A pneumatic discharge valve 9 is provided at the outlet at the bottom of the hopper 3, and the pneumatic discharge valve 9 can effectively open and close the outlet at the bottom of the hopper 3.
[0030] A group of closed annular seats 10 are arranged at the same height on the inner wall and the outer wall of the top of the hopper 3. The inner and outer groups of closed annular seats 10 are fixed to the side wall of the hopper 3 by bolts. Crawler guide plates 11 are laid above the inner and outer groups of closed annular seats 10, and the trolley 5 moves along the crawler guide plates 11.
[0031] The trolley 5 includes a main frame 12, running wheels 13 and a driving motor 14. The main frame 12 is a C-shape with an opening at the bottom. The running wheels 13 are installed below the main frame 12 on both sides of the side walls of the hopper 3. The running wheels 13 run along the crawler guide plates 11. The running wheels 13 on the outside of the side walls of the hopper 3 are connected to the output end of the driving motor 14 through a transmission belt and a transmission wheel. The driving motor 14 is arranged in the main frame 12 on the outside of the side walls of the hopper 3.
[0032] At least two sets of guide wheels 15 are arranged inside the main frame 12 on both sides of the side wall of the hopper 3 , and the guide wheels 15 are in contact with and roll against both sides of the side wall of the hopper 3 .
[0033] The main frame 12 is also provided with a mounting seat 16 on the inner side of the side wall of the hopper 3 , and the top of the mounting seat 16 is connected to the main frame 12 and fixed by adjusting the angle through bolts.
[0034] A plate groove 17 is provided on one side of the inner wall of the mounting seat 16 close to the hopper 3 , and one side of the scraper 4 is movably mounted in the plate groove 17 .
[0035] Two groups of movable grooves 18 are arranged on both sides of the plate groove 17 inside the mounting seat 16, and a guide column 19 is arranged inside each group of movable grooves 18. The scraper 4 can move along the movable grooves 18 and the guide columns 19 on both sides. A spring 20 is arranged on the outer side of the guide column 19 in the movable groove 18, and one end of the spring 20 is always pressed against the scraper 4.
[0036] A gap is provided between the scraper 4 and the inner wall of the hopper 3 , and the scraper 4 and the inner wall of the hopper 3 are provided at an oblique angle relative to each other.
[0037] The working process of the utility model is as follows: the pneumatic discharge valve 9 at the bottom of the hopper 3 is closed first, and the material first passes through the uppermost cutting grid 2 to cut the large agglomerated material into small pieces that can pass through the discharge port. When the material enters the hopper 3, the weighing sensor 7 monitors the weight change of the material in real time, the weight is 10-50kg, and the time is stable for more than 3 seconds. The specific adjustment can be made according to the actual situation. After the material is stably weighed, the pneumatic discharge valve 9 is opened, and at the same time, the operation of the trolley 5 is controlled to start, so that the scraper 4 moves along the inner wall of the hopper 3 to scrape off the accumulated material that may be formed. When the weight of the material is reduced to below the threshold or to 0, the scraper 4 and the trolley 5 stop moving to save energy and extend the service life of the equipment.
[0038] The movement of the scraper trolley drives the movement of the scraper in this utility model, significantly reducing the residue of materials on the inner wall of the hopper and removing the materials in the dead corners, ensuring that each weighing is based on the actual material quantity.
[0039] The implementation of this utility model improves the production efficiency. Through the continuous or periodic movement of the scraper trolley, the downtime for cleaning caused by material accumulation is reduced, thus accelerating the production process.
[0040] The design of the scraper and the mounting seat in this utility model is easy to disassemble and replace. When the scraper is worn or damaged, it can be quickly replaced without affecting the production progress.
[0041] This utility model is applicable to various materials with different characteristics. Whether it is agglomerated lump ore or wet particles, the scraper can effectively prevent their accumulation on the inner wall of the hopper, ensuring the wide applicability of the weighing system.
[0042] This utility model not only improves the weighing accuracy, but also enhances the production efficiency, reduces the maintenance cost, and has good adaptability, bringing significant technological progress to the anti - material - accumulation and maintenance treatment of the hopper scale.
[0043] The above - mentioned is only the preferred embodiment of this utility model and is not used to limit this utility model. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of this utility model, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the technical solution of this utility model.
Claims
1. A hopper scale for preventing material accumulation, characterized in that: It includes a fixed bracket, a cutting grid, a hopper, a scraper and a trolley. The hopper is an inverted cone structure with upper and lower openings. The cutting grid and the hopper are both installed in the fixed bracket. The cutting grid is installed above the upper opening of the hopper. A mounting support is provided in the middle of the fixed bracket. A plurality of groups of weighing sensors are vertically provided on the inner side of the mounting support. The outer wall of the hopper is fixedly connected to the upper part of the weighing sensor. The trolley is rotatably installed around the top of the hopper. The scraper is arranged close to the inner wall of the hopper. The top of the scraper can be adjusted and installed below the trolley.
2. A hopper scale for preventing material accumulation according to claim 1, characterized in that: An array of rectangular cutting openings is arranged in the cutting grid.
3. The hopper scale for preventing material accumulation according to claim 1, characterized in that: A pneumatic discharge valve is arranged at the outlet at the bottom of the hopper.
4. The hopper scale for preventing material accumulation according to claim 1, characterized in that: A group of closed annular seats are arranged at the same height on the inner wall and the outer wall of the top of the hopper. The inner and outer groups of closed annular seats are fixed to the side wall of the hopper between them by bolts. Crawler guide plates are laid above the inner and outer groups of closed annular seats, and the trolley moves along the crawler guide plates.
5. A hopper scale for preventing material accumulation according to claim 4, characterized in that: The trolley includes a main frame, walking wheels and a driving motor. The main frame is in a C-shape with an opening at the bottom. The walking wheels are installed below the main frame on both sides of the side wall of the hopper. The walking wheels move along the crawler guide plates. The walking wheels on the outside of the side wall of the hopper are connected to the output end of the driving motor through a transmission belt and a transmission wheel. The driving motor is arranged in the main frame outside the side wall of the hopper.
6. A hopper scale for preventing material accumulation according to claim 5, characterized in that: At least two groups of guide wheels are arranged inside the main frame on both sides of the side wall of the hopper, and the guide wheels are in contact with the two sides of the side wall of the hopper and roll.
7. The hopper scale for preventing material accumulation according to claim 5, characterized in that: The main frame is also provided with a mounting seat on the inner side of the side wall of the hopper, and the connection between the top of the mounting seat and the main frame is adjusted and fixed by bolts.
8. The hopper scale for preventing material accumulation according to claim 7, characterized in that: A plate groove is provided on one side of the inner wall of the mounting seat close to the hopper, and one side of the scraper is movably mounted in the plate groove.
9. The hopper scale for preventing material accumulation according to claim 7, characterized in that: Two groups of movable grooves are arranged on both sides of the plate groove inside the mounting seat, and a guide column is arranged inside each group of movable grooves. The scraper can move along the movable grooves and the guide columns on both sides. A spring is arranged on the outside of the guide column in the movable groove, and one end of the spring is always pressed against the scraper.
10. The hopper scale for preventing material accumulation according to claim 1, characterized in that: A gap is arranged between the scraper and the inner wall of the hopper, and the scraper and the inner wall of the hopper are arranged at a relative oblique angle.