Deviation rectifying shaft applied to vacuum belt dryer
By designing a bias correction device for fixing and moving the half-axis in a vacuum belt dryer, the cylinder and elastic layer provide stable friction, the problems of insufficient friction and difficulty in cleaning the outer surface are solved, and the stable correcting of the belt is achieved and Long life, meets GMP requirements.
Patent Information
- Application Number
- CN202420118288.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-01-17
AI Technical Summary
The deviation correction device of the existing vacuum belt dryer has problems such as insufficient friction, poor stress and complex and difficult to clean the outer surface structure, resulting in the belt being easily slipped and damaged during long-term operation.
A deviation correction shaft including a fixed adhesive half shaft and a moving adhesive half shaft is designed. The moving adhesive half shaft is driven by a cylinder to lateral movement, providing a uniform friction correction belt, and wrapping it on the fixed and moving adhesive half shaft. Coated with food and pharmaceutical grade silicone rubber or tetrafluoro material elastic layer to ensure stable operation and easy cleaning of the belt.
It achieves stable and soft correcting of the belt, extends the service life of the belt, and complies with the requirements of the pharmaceutical production quality management specification (GMP) during the cleaning process, avoiding damage to the belt by the correction shaft.
Smart Images
Figure CN222330771U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of transmission shafts, and in particular relates to a deviation-correcting shaft used in a vacuum belt dryer. Background Art
[0002] Vacuum belt dryers are widely used in the fields of food, medicine, and chemical industry to dry materials such as extracts and concentrates. In order to ensure the stability of the vacuum and the continuity of the equipment operation, the running stability of the belt inside the equipment is very important.
[0003] At present, the domestic vacuum belt dryer uses devices to correct the deviation of conveyor belts. Its structures mainly include cylinder forced stretching type, belt with guide strip forced limiting type, stainless steel knurled half-shaft type and polygonal stainless steel square steel welded shaft. Cylinder forced stretching type means that when the conveyor belt deviates, the cylinder is forced to pull the cylinder to change the tension on one side of the shaft to correct the deviation of the belt by relying on the force of the cylinder. In this correction method, the belt needs to have a certain elasticity, but the belt is easily deformed and forms defects such as bell mouth and stretching after long-term use, and has been gradually eliminated by the market. Belt with guide strip forced limiting means sewing PTFE guide strips on both sides of the belt, relying on forced limiting inside the PTFE guide strip to prevent the belt from deviating. In this correction method, the PTFE guide strip will be worn and mixed into the material under long-term operation, and it has been banned. Stainless steel knurled half-shaft type and polygonal stainless steel square steel welded shaft use the axial displacement of the shaft to perform axial correction action on the deviated belt to correct the belt. Both methods must have sufficient friction to ensure that the shaft and the belt do not slip when the belt is running. The purpose of knurled and polygonal stainless steel shafts is to enhance friction, but this also damages the inner surface of the belt, causing damage after long-term operation, especially during cleaning, which can easily cause insufficient friction and belt slippage; the surface structure is complex and cannot be cleaned cleanly, etc.
[0004] In view of the above-mentioned situations, the vacuum belt dryers on the market are in urgent need of a new deviation-correcting shaft to solve the problems of insufficient friction, uneven force, and complex and difficult-to-clean outer surface structure. Utility Model Content
[0005] The utility model aims to provide a deviation-correcting shaft applied to a vacuum belt dryer to solve the problems existing in the above-mentioned background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a deviation correction shaft applied to a vacuum belt dryer, comprising a fixed rubber-coated half-shaft and a movable rubber-coated half-shaft, the two ends of the fixed rubber-coated half-shaft are respectively fixed with a left shaft head and a right shaft head by a fastening screw, the two ends of the fixed rubber-coated half-shaft are provided with bearing seats, the two bearing seats are respectively provided with a left transmission inner shaft and a right transmission inner shaft, the left transmission inner shaft and the right transmission inner shaft respectively penetrate the left shaft head and the right shaft head and extend into the fixed rubber-coated half-shaft, the ends of the left transmission inner shaft and the right transmission inner shaft are key-connected with a fixing ring, the movable rubber-coated half-shaft is fitted with the fixed rubber-coated half-shaft, the movable rubber-coated half-shaft is fixedly connected with the fixing ring by a fastening screw, one end of the left transmission inner shaft is provided with a cylinder, and the piston rod of the cylinder is connected to one end of the left transmission inner shaft through a connecting piece.
[0007] Furthermore, one end of the left shaft head and the right shaft head is sleeved with a fixed sliding sleeve, and the fixed sliding sleeve is respectively fitted with the inner wall of the fixed rubber-coated half-shaft and the movable rubber-coated half-shaft.
[0008] Furthermore, a movable sleeve is sleeved on the fixed ring, and the movable sleeve is respectively fitted with the inner walls of the fixed rubber-coated half-shaft and the movable rubber-coated half-shaft.
[0009] Furthermore, a locking nut 1 is threadedly connected to one end of the left transmission inner shaft close to the fixing ring.
[0010] Furthermore, a locking nut 2 is threadedly connected to one end of the right transmission inner shaft close to the fixing ring.
[0011] Furthermore, outer surfaces of the fixed rubber-coated half-shaft and the movable rubber-coated half-shaft are both coated with an elastic layer.
[0012] Furthermore, the elastic layer is made of a material selected from the group consisting of food and medical grade silicone rubber, polytetrafluoroethylene or PEEK.
[0013] Furthermore, the top end of the fastening screw 1 is sunken into the fixed rubber-coated half-shaft, and the top end of the fastening screw 2 is sunken into the movable rubber-coated half-shaft.
[0014] Furthermore, the length and cross-sectional radius of the fixed rubber-coated half-shaft and the movable rubber-coated half-shaft are the same.
[0015] The technical effects and advantages of the utility model are as follows: the deviation correction shaft used in the vacuum belt dryer has advanced design, compact structure and easy use. By arranging a fixed rubber-coated half-shaft, a movable rubber-coated half-shaft, a cylinder and a connecting piece, when the force points of the belt are evenly distributed on the movable rubber-coated half-shaft, the cylinder drives the movable rubber-coated half-shaft to move laterally through the connecting piece, thereby driving the belt to move. When the belt fits tightly with the fixed rubber-coated half-shaft, the cylinder drives the movable rubber-coated half-shaft to reset and completes the belt deviation correction. By respectively coating the fixed rubber-coated half-shaft and the movable rubber-coated half-shaft with rubber layers, a stable and gentle friction force can be provided for the belt operation, while ensuring that the deviation correction shaft meets the GMP requirements during CIP cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A vertical cross-sectional view of the main viewing direction of the utility model;
[0017] Figure 2 It is a cross-sectional view of the utility model along the AA direction;
[0018] Figure 3 It is a cross-sectional view of the utility model along the BB direction;
[0019] Figure 4 This is a detailed diagram of part C of the utility model.
[0020] In the figure: 1. Fixed rubber-coated half-shaft; 2. Mobile rubber-coated half-shaft; 3. Left shaft head; 4. Right shaft head; 5. Fastening screw one; 6. Bearing seat; 7. Left transmission inner shaft; 8. Right transmission inner shaft; 9. Fixed ring; 10. Fastening screw two; 11. Cylinder; 12. Connector; 13. Fixed sleeve; 14. Mobile sleeve; 15. Locking nut one; 16. Locking nut two. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] The utility model provides Figure 1-4 A deviation correction shaft used in a vacuum belt dryer is shown in the figure, comprising a fixed rubber-coated half-shaft 1 and a movable rubber-coated half-shaft 2, the two ends of the fixed rubber-coated half-shaft 1 are respectively fixed with a left shaft head 3 and a right shaft head 4 by fastening screws 5, both ends of the fixed rubber-coated half-shaft 1 are provided with bearing seats 6, and the two bearing seats 6 are respectively provided with a left transmission inner shaft 7 and a right transmission inner shaft 8, the left transmission inner shaft 7 and the right transmission inner shaft 8 respectively penetrate the left shaft head 3 and the right shaft head 4 and extend into the fixed rubber-coated half-shaft 1, the ends of the left transmission inner shaft 7 and the right transmission inner shaft 8 are key-connected with a fixing ring 9, and the movable rubber-coated half-shaft 2 and the fixed The fixed rubber-coated half-shaft 1 is fitted together, and the mobile rubber-coated half-shaft 2 is fixedly connected to the fixed ring 9 by a fastening screw 10. A cylinder 11 is provided at one end of the left transmission inner shaft 7. The piston rod of the cylinder 11 is connected to one end of the left transmission inner shaft 7 through a connecting piece 12. The cylinder 11 drives the left transmission inner shaft 7 to move laterally through the connecting piece 12, and then drives the mobile rubber-coated half-shaft 2 to move together. Since the belt fits tightly with the mobile rubber-coated half-shaft 2, sufficient and effective friction is provided for the belt during the lateral movement of the mobile rubber-coated half-shaft 2, so that the belt and the mobile rubber-coated half-shaft 2 move laterally synchronously.
[0025] In addition, one end of the left shaft head 3 and the right shaft head 4 is sleeved with a fixed sleeve 13, and the fixed sleeve 13 is respectively fitted with the inner wall of the fixed rubber-coated half-shaft 1 and the movable rubber-coated half-shaft 2. The fixed sleeve 13 can provide linear motion lubrication for the movable rubber-coated half-shaft 2.
[0026] Specifically, a movable sleeve 14 is sleeved on the fixed ring 9 , and the movable sleeve 14 fits with the inner walls of the fixed rubber-coated half-shaft 1 and the movable rubber-coated half-shaft 2 respectively. The movable sleeve 14 can provide linear motion lubrication for the fixed ring 9 .
[0027] It is worth mentioning that a locking nut 15 is threadedly connected to one end of the left transmission inner shaft 7 near the fixing ring 9, which facilitates locking and fixing the fixing ring 9 on the left transmission inner shaft 7 through the locking nut 15, so that the fixing ring 9 on the left transmission inner shaft 7 can move with the left transmission inner shaft 7. Since the movable rubber-coated half-shaft 2 is fixedly connected to the fixing ring 9 by the fastening screw 10, the movable rubber-coated half-shaft 2 can move with the left transmission inner shaft 7.
[0028] Specifically, one end of the right transmission inner shaft 8 close to the fixing ring 9 is threadedly connected with a locking nut 16, which facilitates locking and fixing the fixing ring 9 on the right transmission inner shaft 8 through the locking nut 16. Since the movable rubber-coated half-shaft 2 is fixedly connected to the fixing ring 9 by the fastening screw 10, both ends of the movable rubber-coated half-shaft 2 have a connection point, and the installation is more stable. The right transmission inner shaft 8 and the fixing ring 9 on the right transmission inner shaft 8 can move together with the movable rubber-coated half-shaft 2, and will not affect the correction action of the movable rubber-coated half-shaft 2.
[0029] It should be noted that the outer surfaces of the fixed rubber-coated half-shaft 1 and the movable rubber-coated half-shaft 2 are both covered with a rubber layer, which can effectively prevent the correction shaft from damaging the inner surface of the belt and is beneficial to extending the service life of the belt.
[0030] Specifically, the material of the rubber layer is one of food and medical grade silicone rubber, polytetrafluoroethylene or PEEK, which has the advantages of high safety factor and excellent friction performance, and can provide stable and gentle friction for the belt. At the same time, its outer surface is smooth and easier to clean, which can ensure that the online CIP cleaning (commonly known as in-place cleaning, also known as cleaning positioning or positioning cleaning) of the correction shaft meets the requirements of GMP (Good Manufacturing Practice for Pharmaceuticals).
[0031] What cannot be ignored is that the top of the fastening screw 1 5 is recessed in the fixed rubber-coated half-shaft 1, and the top of the fastening screw 2 10 is recessed in the movable rubber-coated half-shaft 2, which can effectively prevent the fastening screw 1 5 and the fastening screw 2 10 from causing wear to the belt, and at the same time facilitate the close fit between the belt and the correction shaft.
[0032] Specifically, the lengths and cross-sectional radii of the fixed rubber-coated half-shaft 1 and the movable rubber-coated half-shaft 2 are the same, ensuring that the cross-sections of the fixed rubber-coated half-shaft 1 and the movable rubber-coated half-shaft 2 can fit completely, which is beneficial to the stable operation of the deviation-correcting shaft and the uniform speed conveying of the belt.
[0033] Working principle: When installing the correction shaft used in the vacuum belt dryer, first fix the left shaft head 3 and the right shaft head 4 with the fixed sleeve 13 on the outer surface to the two ends of the fixed rubber-coated half-shaft 1 through the fastening screw 15, and then pass one end of the left transmission inner shaft 7 and the right transmission inner shaft 8 through the left shaft head 3 and the right shaft head 4 to extend to the interior of the fixed rubber-coated half-shaft 1, and then fix the fixed ring 9 with the movable sleeve 14 on the left transmission inner shaft 7 and the right transmission inner shaft 8 to one end of the interior of the fixed rubber-coated half-shaft 1 through the locking nut 15 and the locking nut 2 16, and then fit the movable rubber-coated half-shaft 2 with the fixed rubber-coated half-shaft 1, and fix the movable rubber-coated half-shaft 2 to the fixed rubber-coated half-shaft 1, and fix the movable rubber-coated half-shaft 2 to the fixing ring 9 through the fastening screw 2 10, and finally connect the piston rod of the cylinder 11 arranged at the left end (right end) of the correction shaft to the left transmission inner shaft (right transmission inner shaft) through the connecting piece 12. The deflection correction shaft used in the vacuum belt dryer has advanced design, compact structure and convenient use. When in use, the belt tensioning is set on the deflection correction shaft and the transmission shaft. By setting a fixed rubber-coated half-shaft 1, a movable rubber-coated half-shaft 2, a cylinder 11 and a connecting piece 12, when the force points of the belt are evenly distributed on the movable rubber-coated half-shaft 2, the cylinder 11 drives the movable rubber-coated half-shaft 2 to move laterally through the connecting piece 12, and then drives the belt to move. When the belt fits tightly with the fixed rubber-coated half-shaft 1, the cylinder 11 drives the movable rubber-coated half-shaft 2 to reset, and the belt deflection correction is completed. By respectively coating the fixed rubber-coated half-shaft 1 and the movable rubber-coated half-shaft 2 with rubber layers, a stable and gentle friction force can be provided for the belt operation, and at the same time, it can ensure that the deflection correction shaft meets the GMP requirements during CIP cleaning.
[0034] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A deviation-correcting shaft used in a vacuum belt dryer, characterized in that: The invention comprises a fixed rubber-coated half shaft (1) and a movable rubber-coated half shaft (2), wherein the two ends of the fixed rubber-coated half shaft (1) are respectively fixed with a left shaft head (3) and a right shaft head (4) by means of a fastening screw (5), and the two ends of the fixed rubber-coated half shaft (1) are provided with a bearing seat (6), and the two bearing seats (6) are respectively provided with a left transmission inner shaft (7) and a right transmission inner shaft (8), and the left transmission inner shaft (7) and the right transmission inner shaft (8) respectively penetrate the left shaft head (3) and the right shaft head (4) and extend to In the fixed rubber-coated half-shaft (1), the ends of the left transmission inner shaft (7) and the right transmission inner shaft (8) are key-connected with a fixing ring (9), the movable rubber-coated half-shaft (2) is fitted with the fixed rubber-coated half-shaft (1), and the movable rubber-coated half-shaft (2) is fixedly connected to the fixing ring (9) by a second fastening screw (10), and a cylinder (11) is provided at one end of the left transmission inner shaft (7), and a piston rod of the cylinder (11) is connected to one end of the left transmission inner shaft (7) by a connecting piece (12).
2. The deflection-correcting shaft for use in a vacuum belt dryer according to claim 1, characterized in that: One end of the left shaft head (3) and the right shaft head (4) is sleeved with a fixed sleeve (13), and the fixed sleeve (13) is respectively fitted with the inner wall of the fixed rubber-coated half shaft (1) and the movable rubber-coated half shaft (2).
3. The deflection-correcting shaft for use in a vacuum belt dryer according to claim 1, characterized in that: A movable sleeve (14) is sleeved on the fixed ring (9), and the movable sleeve (14) fits with the inner walls of the fixed rubber-coated half-shaft (1) and the movable rubber-coated half-shaft (2) respectively.
4. The deflection-correcting shaft for use in a vacuum belt dryer according to claim 1, characterized in that: One end of the left transmission inner shaft (7) close to the fixing ring (9) is threadedly connected with a locking nut 1 (15).
5. The deflection-correcting shaft for use in a vacuum belt dryer according to claim 1, characterized in that: One end of the right transmission inner shaft (8) close to the fixing ring (9) is threadedly connected with a locking nut 2 (16).
6. The deflection-correcting shaft for use in a vacuum belt dryer according to claim 1, characterized in that: The outer surfaces of the fixed rubber-coated half-shaft (1) and the movable rubber-coated half-shaft (2) are both coated with a rubber coating layer.
7. The deviation-correcting shaft for use in a vacuum belt dryer according to claim 6, characterized in that: The material of the rubber layer is one of silicone rubber, polytetrafluoroethylene or PEEK that meets food and medical grade.
8. The deviation-correcting shaft for vacuum belt dryer according to claim 1, characterized in that: The top end of the first fastening screw (5) is sunken into the fixed rubber-coated half-shaft (1), and the top end of the second fastening screw (10) is sunken into the movable rubber-coated half-shaft (2).
9. The deviation-correcting shaft for vacuum belt dryer according to claim 1, characterized in that: The length and cross-sectional radius of the fixed rubber-coated half-shaft (1) and the movable rubber-coated half-shaft (2) are the same.