Weightlessness scale screw rod angle adjusting structure
By installing an angle adjustment component in the loss-in-weight scale, the screw angle can be manually adjusted, which solves the problems of poor material conveying and metering deviation caused by a fixed screw angle, and improves the adaptability and metering accuracy of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-20
- Publication Date
- 2026-04-24
AI Technical Summary
The screw angle of existing screw-driven loss-in-weight scales is fixed, making it difficult to take into account the differences in flowability and viscosity of different materials, resulting in poor material conveying or measurement errors.
By setting an angle adjustment component between connecting disc one and connecting disc two, and utilizing the reverse thread characteristics of connecting screw one and two, the sleeve can be manually rotated to change the angle of the screw discharge component, thereby achieving flexible adjustment of the screw angle.
It enables rapid adjustment of the screw angle according to the material characteristics, improves the adaptability and metering accuracy of the loss-in-weight scale to various materials, reduces material conveying obstruction and metering deviation, and improves the stability and service life of the equipment.
Smart Images
Figure CN224163238U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of loss-in-weight scales, and in particular to a screw angle adjustment structure for a loss-in-weight scale. Background Technology
[0002] In modern industrial production, loss-in-weight scales, as high-precision continuous loss-in-weight metering devices, are widely used in material metering and conveying scenarios in industries such as chemicals, food, and building materials. Their core working principle involves real-time monitoring of material weight changes within the hopper using load cells, combined with a PLC control system to accurately calculate material flow, and then achieving quantitative discharge via methods such as screw conveyors or belt conveyors.
[0003] Among these, loss-in-weight scales with screw-driven discharge are particularly common. These devices use the rotational motion of the screw to push the material in the hopper along the spiral groove to the discharge port, achieving continuous material conveying.
[0004] Regarding the aforementioned technologies, the inventors believe that the angle between the screw and the horizontal plane in most screw-driven loss-in-weight scales, i.e., the screw angle, is fixed at the factory. However, different materials have significant differences in flowability and viscosity. For example, granular materials have strong flowability and are suitable for larger screw angles to reduce conveying speed and improve metering accuracy. On the other hand, powder or wet materials are prone to agglomeration and require smaller angles to enhance propulsion. However, a fixed-angle screw cannot accommodate the characteristics of multiple materials, which can easily lead to poor material conveying or metering deviation. Utility Model Content
[0005] The purpose of this application is to provide a screw angle adjustment structure for a loss-in-weight scale, so as to improve the problem that a screw with a fixed angle is difficult to take into account the characteristics of multiple materials, which can easily cause poor material conveying or measurement deviation.
[0006] This application provides a screw angle adjustment structure for a loss-in-weight scale, which adopts the following technical solution:
[0007] A screw angle adjustment structure for a loss-in-weight scale includes a scale body, a support frame above the scale body, a hopper on the support frame, a connecting plate 1 on the bottom surface of the hopper, a discharge port on the hopper, a corrugated pipe on the bottom surface of the hopper communicating with the discharge port, a connecting plate 2 on the end of the corrugated pipe away from the connecting plate 1, and a screw discharge assembly on the bottom surface of the connecting plate 2 communicating with the corrugated pipe; a plurality of angle adjustment components connected to the connecting plate 2 are provided on the bottom surface of the connecting plate 1, the angle adjustment components are spaced apart along the length direction of the screw discharge assembly, and each angle adjustment component includes a connecting screw 1 fixedly disposed on the bottom surface of the connecting plate 1, a connecting screw 2 rotatably disposed on the top surface of the connecting plate 2, and a sleeve threadedly connected to the connecting screw 1 and the connecting screw 2, wherein the threads of the connecting screw 1 and the connecting screw 2 are opposite in direction.
[0008] By adopting the above technical solution, and by setting an angle adjustment component between connecting plate one and connecting plate two, the operator can manually rotate the sleeve of the angle adjustment component to change the included angle between connecting plate one and connecting plate two by utilizing the reverse thread characteristics of connecting screw one and two, thereby causing the screw discharge component to tilt and realizing the adjustment of the discharge screw angle. The angle of the discharge screw can be quickly adjusted according to the characteristics of different materials, which helps to solve the problems of poor material conveying or metering deviation, and improves the adaptability and metering accuracy of the loss-in-weight scale to various materials.
[0009] Optionally, the first connecting plate is provided with a first fixing ring, the second connecting plate is provided with a second fixing ring, and the two ends of the corrugated pipe are respectively fitted and fixed with the first fixing ring and the second fixing ring.
[0010] By adopting the above technical solution, connecting plate one and connecting plate two are respectively equipped with fixing ring one and fixing ring two, and the two ends of the corrugated pipe are sleeved and fixed on the fixing rings. The corrugated pipe is tightly fitted with connecting plate one and connecting plate two, and is stably connected; at the same time, it is easy to disassemble the corrugated pipe.
[0011] Optionally, the corrugated pipe is provided with fastening clamps at both ends.
[0012] By adopting the above technical solution, the fastening clamp further strengthens the connection between the corrugated pipe and the fixing ring, improves the sealing of the connection, reduces material spillage caused by loosening, and reduces maintenance frequency and production costs.
[0013] Optionally, the corrugated pipe sidewall is provided with a plurality of fixing lugs that abut against the connecting disc, the connecting screw passes through the fixing lugs, and the connecting screw is threadedly connected with a fixing nut that abuts against the fixing lugs.
[0014] By adopting the above technical solution, a fixing lug is set at the upper end of the corrugated pipe, and it is fixed by connecting screw and fixing nut. This helps to fix the corrugated pipe and can also share the tension and pressure on the corrugated pipe when the screw angle is adjusted to a certain extent, thereby improving the reliability of material conveying.
[0015] Optionally, the sleeve sidewall is provided with a number of anti-slip protrusions.
[0016] By adopting the above technical solution, the anti-slip ridges improve the grip experience of operators when manually adjusting the sleeve, increase the friction between the hand and the sleeve, and make it easier for operators to rotate the sleeve to adjust the screw angle, thus reducing slippage.
[0017] Optionally, the bottom surface of the first connecting plate is provided with a plurality of elastic elements, and the end of the elastic element away from the first connecting plate is fixed to the second connecting plate.
[0018] By adopting the above technical solution, the elastic element plays a buffering role during the screw angle adjustment process. When the rotating sleeve changes the screw angle, the elastic element can absorb the impact force generated by the structural movement, thereby reducing equipment vibration and noise.
[0019] Optionally, the top surface of the scale body is provided with an auxiliary support column, and the top surface of the auxiliary support column is rotatably provided with a support plate that abuts against the bottom surface of the screw discharge assembly.
[0020] By adopting the above technical solution, the support plate can withstand the weight of the screw discharge assembly and the pressure generated during material conveying, thereby improving the stability of the device and extending its service life.
[0021] Optionally, an elastic pad is provided on the top surface of the support plate.
[0022] By adopting the above technical solution, the elastic pad can effectively buffer the pressure of the screw discharge assembly on the support plate, reduce the rigid contact between the two, reduce vibration transmission, and thus reduce the noise generated during equipment operation; at the same time, the elastic pad can also adapt to the slight displacement generated when the screw angle is adjusted, ensuring the support effect while improving the stability of equipment operation.
[0023] In summary, this application includes at least one of the following beneficial technical effects of the loss-in-weight scale screw angle adjustment structure:
[0024] 1. By setting an angle adjustment component between connecting plate one and connecting plate two, the operator can manually rotate the sleeve of the angle adjustment component to change the included angle between connecting plate one and connecting plate two by utilizing the reverse thread characteristics of connecting screw one and two, thereby causing the screw discharge component to tilt and realizing the adjustment of the discharge screw angle; the angle of the discharge screw can be quickly adjusted according to the characteristics of different materials, which helps to solve the problems of poor material conveying or metering deviation, and improves the adaptability and metering accuracy of the loss-in-weight scale to various materials;
[0025] 2. Connecting disc one and connecting disc two are respectively equipped with fixing ring one and fixing ring two, and the two ends of the corrugated pipe are sleeved and fixed on the fixing rings. The corrugated pipe fits tightly with connecting disc one and connecting disc two, ensuring a stable connection; at the same time, it is easy to disassemble the corrugated pipe.
[0026] 3. The support plate can withstand the weight of the screw discharge assembly and the pressure generated during material conveying, thereby improving the stability of the device and extending its service life. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of the screw angle adjustment mechanism of the loss-in-weight scale;
[0028] Figure 2 yes Figure 1 Enlarged schematic diagram of the structure at point A;
[0029] Figure 3 This is a cross-sectional schematic diagram used to illustrate the angle adjustment component.
[0030] In the diagram, 1. Scale body; 2. Hopper; 21. Support; 22. Discharge port; 3. Connecting plate one; 31. Fixing ring one; 4. Corrugated pipe; 41. Fixing lug; 42. Fixing nut; 5. Connecting plate two; 51. Fixing ring two; 6. Screw discharge assembly; 61. Discharge pipe; 63. Drive component; 7. Angle adjustment assembly; 71. Connecting screw one; 72. Connecting screw two; 73. Sleeve; 731. Anti-slip convex strip; 8. Fastening clamp; 9. Elastic component; 10. Auxiliary support column; 101. Support plate; 102. Elastic pad. Detailed Implementation
[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail below.
[0032] A screw angle adjustment structure for a loss-in-weight scale, referring to Figure 1 The screw angle adjustment structure of this loss-in-weight scale mainly consists of a scale body 1, a support 21, a hopper 2, a screw discharge assembly 6, and an angle adjustment assembly 7. The scale body 1 serves as the basic support structure for the entire equipment, possessing excellent load-bearing and weighing capacity. A support 21 is bolted to the top of the scale body 1, supporting the hopper 2. The hopper 2 has an inverted conical structure for storing materials, and a connecting plate 3, a circular metal disc, is welded to its bottom surface. The hopper 2 has a discharge port 22, and a corrugated pipe 4 is connected to the discharge port 22 at the center of the bottom surface of the hopper 2. The corrugated pipe 4 is a flexible, expandable pipe, typically made of rubber or silicone, capable of adapting to deformation during screw angle adjustment and ensuring the sealing of material transport. A connecting plate 5, similar in structure to the connecting plate 3, is fixedly connected to the end of the corrugated pipe 4 away from the connecting plate 3.
[0033] Reference Figure 1 , Figure 3 To ensure a secure connection of the corrugated pipe 4, a fixing ring 31 is welded onto the connecting disc 3, and a fixing ring 51 is welded onto the connecting disc 5. Both ends of the corrugated pipe 4 are respectively fitted onto the outside of the fixing rings 31 and 51 and secured with fastening clamps 8. The fastening clamps 8 are made of metal, and tightening the bolts secures both ends of the corrugated pipe 4 tightly to the fixing rings 31 and 51.
[0034] Reference Figure 1The bottom surface of the connecting plate 2 5 is connected to the corrugated pipe 4 and is equipped with a screw discharge assembly 6. The screw discharge assembly 6 includes a discharge pipe 61, a discharge screw (not shown in the figure), and a drive component 63. The discharge pipe 61 is a cylindrical metal pipe used to guide the material output; the discharge screw is installed inside the discharge pipe 61 and is usually made of stainless steel. It propels the material forward by rotating the helical blades; the drive component 63 is a motor, which is bolted to one end of the discharge pipe 61. The output shaft of the drive component 63 is fixedly connected to one end of the discharge screw through a coupling, thereby driving the discharge screw to rotate.
[0035] Reference Figure 1 An auxiliary support column 10 is vertically welded to the top surface of the weighing body 1. A support plate 101 is rolled to the top surface of the auxiliary support column 10 via a bearing. The support plate 101 can rotate freely relative to the top surface of the auxiliary support column 10, facilitating screw angle adjustment. An elastic pad 102 made of rubber is bonded to the top surface of the support plate 101 to buffer the pressure of the screw discharge assembly 6 and reduce vibration and noise.
[0036] Reference Figure 1 , Figure 2 Several elastic elements 9 are evenly distributed and welded to the bottom surface of the connecting disc 1 3. In this embodiment, two elastic elements are preferred. The elastic elements 9 are preferably springs. The end of the elastic element 9 away from the connecting disc 1 3 is welded and fixedly connected to the connecting disc 2 5. The elastic elements 9 play a role in buffering and resetting during the screw angle adjustment process, ensuring the stability of the structure.
[0037] Reference Figure 2 , Figure 3 The bottom surface of the connecting disc 3 is provided with several angle adjustment components 7 connected to the connecting disc 2 5. In this embodiment, two angle adjustment components are preferred, and the angle adjustment components 7 are spaced apart along the length direction of the screw discharge component 6. The angle adjustment component 7 includes a connecting screw 1 71 fixedly disposed on the bottom surface of the connecting disc 3, a connecting screw 2 72 rotatably disposed on the top surface of the connecting disc 2 5, and a sleeve 73 threadedly connected to the connecting screw 1 71 and the connecting screw 2 72. The connecting screw 1 71 is fixed to the connecting disc 3 by welding, and the connecting screw 2 72 is rotatably connected to a fixed seat installed on the top surface of the connecting disc 3 by a pin. The sleeve 73 is a hollow cylindrical tube, and its inner wall is provided with an internal thread that matches the external thread of the connecting screw 1 71 and the connecting screw 2 72. The side wall of the sleeve 73 is provided with several anti-slip protrusions 731 to facilitate manual rotation of the sleeve 73 by the operator. Specifically, the threads of connecting screw 1 71 and connecting screw 2 72 are opposite, so that when the sleeve 73 is rotated, connecting screw 1 71 and connecting screw 2 72 will move in opposite directions at the same time, thereby realizing the adjustment of the angle between connecting disc 1 3 and connecting disc 2 5.
[0038] Reference Figure 2 , Figure 3To further secure the bellows 4, the side wall of the bellows 4 is provided with several fixing ears 41 that abut against the connecting disc 3, corresponding to the connecting screw 71. Specifically, the two fixing ears 41 have through holes, the connecting screw 71 passes through the through holes of the fixing ears 41, and the connecting screw 71 is threadedly connected to a fixing nut 42 that abuts against the fixing ears 41.
[0039] The implementation principle of this application embodiment is as follows:
[0040] In practical use, the operator manually rotates the sleeve 73 of the angle adjustment component 7, using the reverse thread characteristics of the connecting screw 1 71 and connecting screw 2 72 to change the angle between the connecting disc 1 3 and connecting disc 2 5, thereby tilting the screw discharge component 6 and adjusting the discharge screw angle. During this process, the flexibility of the bellows 4 ensures the sealing of the material conveying channel, the elastic element 9 acts as a buffer and stabilizes the structure, and the auxiliary support column 10 and support plate 101 provide support. When dealing with different materials, the screw angle can be adjusted as needed. For example, increasing the angle for highly fluid granular materials improves metering accuracy, while decreasing the angle for viscous materials enhances propulsion, which helps the loss-in-weight scale operate stably and efficiently.
[0041] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A screw angle adjustment structure for a loss-in-weight scale, comprising a scale body (1), characterized in that: A support (21) is provided above the scale body (1), and a hopper (2) is provided on the support (21). A connecting plate (3) is provided on the bottom surface of the hopper (2), and a discharge port (22) is provided on the hopper (2). A corrugated pipe (4) is provided on the bottom surface of the hopper (2) in connection with the discharge port (22). A connecting plate (5) is provided at the end of the corrugated pipe (4) away from the connecting plate (3). A screw discharge assembly (6) is provided on the bottom surface of the connecting plate (5) in connection with the corrugated pipe (4). The bottom of the connecting plate (3) is connected to the bottom surface of the connecting plate (5). The surface is provided with several angle adjustment components (7) connected to the second connecting plate (5). The angle adjustment components (7) are spaced apart along the length direction of the screw discharge component (6). The angle adjustment components (7) include a first connecting screw (71) fixedly disposed on the bottom surface of the first connecting plate (3), a second connecting screw (72) rotatably disposed on the top surface of the second connecting plate (5), and a sleeve (73) threadedly connected to the first connecting screw (71) and the second connecting screw (72). The threads of the first connecting screw (71) and the second connecting screw (72) are opposite.
2. The screw angle adjustment structure for a loss-in-weight scale according to claim 1, characterized in that: The first connecting plate (3) is provided with a first fixing ring (31), and the second connecting plate (5) is provided with a second fixing ring (51). The two ends of the corrugated pipe (4) are respectively fitted and fixed with the first fixing ring (31) and the second fixing ring (51).
3. The screw angle adjustment structure for a loss-in-weight scale according to claim 2, characterized in that: The corrugated pipe (4) is provided with fastening clamps (8) at both ends.
4. The screw angle adjustment structure for a loss-in-weight scale according to claim 3, characterized in that: The corrugated pipe (4) has several fixing ears (41) on its side wall corresponding to the connecting screw (71) that abut against the connecting disc (3). The connecting screw (71) passes through the fixing ears (41) and the connecting screw (71) is threadedly connected to a fixing nut (42) that abuts against the fixing ears (41).
5. The screw angle adjustment structure for a loss-in-weight scale according to claim 1, characterized in that: The sleeve (73) has several anti-slip ridges (731) on its side wall.
6. The screw angle adjustment structure for a loss-in-weight scale according to claim 2, characterized in that: The bottom surface of the first connecting plate (3) is provided with a plurality of elastic elements (9), and the end of the elastic element (9) away from the first connecting plate (3) is fixed to the second connecting plate (5).
7. The screw angle adjustment structure for a loss-in-weight scale according to claim 1, characterized in that: The top surface of the scale body (1) is provided with an auxiliary support column (10), and the top surface of the auxiliary support column (10) is rotatably provided with a support plate (101) that abuts against the bottom surface of the screw discharge assembly (6).
8. The screw angle adjustment structure for a loss-in-weight scale according to claim 7, characterized in that: An elastic pad (102) is provided on the top surface of the support plate (101).