Vertical adjusting mechanism for bottom spray coating worm and gear guide cylinder of laboratory fluidized bed

Abstract

The utility model relates to the technical field of fluidized beds, in particular to a laboratory fluidized bed bottom spray coating worm and gear guide cylinder vertical adjusting mechanism which comprises an adjusting seat and an adjusting assembly, and the adjusting assembly comprises an adjusting panel, a first shaft rod, a worm, a second shaft rod, a worm gear, a gear, a guide cylinder and a linkage component. The adjusting mechanism is designed to be in worm and gear transmission, the gear ratio is increased, the vertical adjustment of the guide cylinder is small when the input shaft rotates by one circle, the guide cylinder can be accurately and finely adjusted, and the problems that most existing adjusting mechanisms are in bevel gear transmission and lead screw distance adjustment, the input shaft rotates by one circle, the vertical adjustment of the cylinder body is too large, and the adjusting precision is poor are solved. And accurate fine adjustment cannot be carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of fluidized beds, in particular to an up-and-down adjustment mechanism of a worm and worm gear guide cylinder for bottom spraying and coating in a laboratory fluidized bed. Background Technique

[0002] In the structure of the bottom spraying device of the existing fluidized bed, the distance between the air distribution plate and the bottom of the guide cylinder is fixed, and it is impossible to adjust the distance between the gas distribution plate and the bottom of the guide cylinder according to the needs of different materials to ensure that the material can smoothly flow from outside the guide cylinder to inside the guide cylinder, forming a reciprocating flow state, resulting in poor coating effect of the material.

[0003] The prior art CN212740665U discloses a lifting mechanism for a coating machine guide cylinder, which includes a lifting seat and a locking assembly. The lifting seat is fixedly connected to the coating cylinder, and a sliding hole is provided on the lifting seat. The locking assembly includes an inner slider and an outer slider. The inner slider is fixedly connected to the guide cylinder, and a locking handle is threadedly connected between the outer slider and the inner slider. The inner slider and the outer slider can move up and down in the sliding hole, and a clamping opening for clamping the lifting seat is provided between the inner slider and the outer slider. The utility model has a simple structure and is convenient to operate, and can adjust the height of the guide cylinder according to different materials and different coating stages to ensure the coating effect of the material.

[0004] For the lifting mechanism of the coating machine guide cylinder in the prior art, since most of the existing adjustment mechanisms are bevel gear transmission and screw pitch adjustment, when the input shaft rotates one circle, the up-and-down adjustment of the cylinder body is too large, and precise fine adjustment cannot be performed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an up-and-down adjustment mechanism of a worm and worm gear guide cylinder for bottom spraying and coating in a laboratory fluidized bed, which solves the problem that since most of the existing adjustment mechanisms are bevel gear transmission and screw pitch adjustment, when the input shaft rotates one circle, the up-and-down adjustment of the cylinder body is too large, and precise fine adjustment cannot be performed.

[0006] To achieve the above object, the utility model provides an up-and-down adjustment mechanism for a worm and worm gear guide cylinder in a laboratory fluidized bed bottom spraying coater, which includes an adjustment seat and an adjustment component. The adjustment component includes an adjustment panel, a first shaft, a worm, a second shaft, a worm gear, a gear, a guide cylinder and a linkage member. The adjustment panel is fixedly connected to the adjustment seat and is located on one side of the adjustment seat. The first shaft penetrates through the adjustment panel and is rotatably connected to the adjustment panel. The worm is fixedly connected to the first shaft and is located at one end of the first shaft close to the adjustment seat. The second shaft is rotatably connected to the adjustment panel and is located on one side of the adjustment panel close to the worm. The worm gear is fixedly connected to the second shaft and meshes with the worm. The gear is sleeved outside the second shaft and is fixedly connected to the second shaft. The guide cylinder is connected to the adjustment seat through the linkage member. The linkage member is installed on the adjustment seat and drives the guide cylinder to move.

[0007] Wherein, the linkage member includes a guide block, a fixed block, a rack and a connecting portion. The guide block is fixedly connected to the adjustment seat and is located on one side of the adjustment seat close to the gear. The fixed block is slidably connected to the guide block and is located on one side of the guide block. The rack is fixedly installed on the fixed block and meshes with the gear. The connecting portion connects the fixed block and the guide cylinder.

[0008] Wherein, the connecting portion includes a slider and a connecting piece. The slider is fixedly connected to the fixed block and is located on one side of the fixed block away from the rack. Two sides of the connecting piece are respectively fixedly connected to the slider and the guide cylinder.

[0009] Wherein, the linkage member further includes a PTFE gasket, and the PTFE gasket is arranged between the slider and the fixed block.

[0010] Wherein, the adjustment component further includes a handwheel, and the handwheel is fixedly connected to the first shaft and is located at one end of the first shaft away from the worm.

[0011] An up-and-down adjustment mechanism for a worm and worm gear guide cylinder in a laboratory fluidized bed bottom spray coating of the utility model comprises an adjusting seat and an adjusting component. The adjusting component includes an adjusting panel, a first shaft rod, a worm, a second shaft rod, a worm gear, a gear, a guide cylinder and a linkage member. The adjusting panel is fixedly connected to the adjusting seat and is located on one side of the adjusting seat. The first shaft rod penetrates through the adjusting panel and is rotatably connected to the adjusting panel. The worm is fixedly connected to the first shaft rod and is located at one end of the first shaft rod close to the adjusting seat. The second shaft rod is rotatably connected to the adjusting panel and is located on one side of the adjusting panel close to the worm. The worm gear is fixedly connected to the second shaft rod and meshes with the worm. The gear is sleeved outside the second shaft rod and is fixedly connected to the second shaft rod. The guide cylinder is connected to the adjusting seat through the linkage member. The linkage member is installed on the adjusting seat and drives the guide cylinder to move, solving the problem that since most of the existing adjustment mechanisms are bevel gear transmissions and screw pitch adjustments, when the input shaft rotates one circle, the up-and-down adjustment of the cylinder body is too large and precise fine adjustment cannot be performed. Brief Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0013] Figure 1 It is a schematic diagram of the overall structure of the up-and-down adjustment mechanism for a worm and worm gear guide cylinder in a laboratory fluidized bed bottom spray coating of the utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the guide block of the utility model.

[0015] Figure 3 It is a schematic diagram of the structure of the first shaft rod and the second shaft rod of the utility model.

[0016] Figure 4 It is a schematic diagram of the structure of the worm gear and the gear of the utility model.

[0017] In the figure: 1 - adjusting seat, 2 - adjusting panel, 3 - tetrafluoroethylene gasket, 4 - slider, 5 - fixed block, 6 - rack, 7 - worm gear, 8 - worm, 9 - connecting piece, 10 - guide cylinder, 11 - guide block, 12 - second shaft rod, 13 - handwheel, 14 - first shaft rod, 15 - gear. Detailed Description of the Embodiments

[0018] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0019] Please refer toFigures 1-4 , Figure 1 is the overall structural schematic diagram of the up-and-down adjustment mechanism of the worm and gear draft tube of the laboratory fluidized bed bottom spray coating of the present utility model, Figure 2 is the structural schematic diagram of the guiding block 11 of the present utility model, Figure 3 is the structural schematic diagram of the first shaft rod 14 and the second shaft rod 12 of the present utility model, Figure 4 is the structural schematic diagram of the worm wheel 7 and the gear 15 of the present utility model.

[0020] The up-and-down adjustment mechanism of the worm and gear draft tube of the laboratory fluidized bed bottom spray coating of the present utility model includes an adjusting seat 1, an adjusting panel 2, a tetrafluoroethylene gasket 3, a slider 4, a fixing block 5, a rack 6, a worm wheel 7, a worm 8, a connecting piece 9, a draft tube 10, a guiding block 11, a second shaft rod 12, a hand wheel 13, a first shaft rod 14, and a gear 15, which solves the problem that since most of the existing adjustment mechanisms are bevel gear transmissions and screw pitch adjustments, when the input shaft rotates one circle, the up-and-down adjustment of the cylinder body is too large and precise fine-tuning cannot be performed. It can be understood that the foregoing solution can also be used to improve the accuracy problem.

[0021] In this embodiment, a rectangular through hole is provided in the middle of the adjusting seat 1, and it is installed on the adjusting base through the adjusting component, thus solving the problem that since most of the existing adjustment mechanisms are bevel gear transmissions and screw pitch adjustments, when the input shaft rotates one circle, the up-and-down adjustment of the cylinder body is too large and precise fine-tuning cannot be performed.

[0022] Among them, the adjustment panel 2 is fixedly connected to the adjustment base 1 and is located on one side of the adjustment base 1. The first shaft 14 penetrates through the adjustment panel 2 and is rotatably connected to the adjustment panel 2. The worm 8 is fixedly connected to the first shaft 14 and is located at one end of the first shaft 14 close to the adjustment base 1. The second shaft 12 is rotatably connected to the adjustment panel 2 and is located on one side of the adjustment panel 2 close to the worm 8. The worm gear 7 is fixedly connected to the second shaft 12 and meshes with the worm 8. The gear 15 is sleeved outside the second shaft 12 and is fixedly connected to the second shaft 12. The flow guide cylinder 10 is connected to the adjustment base 1 through the linkage member. The linkage member is installed on the adjustment base 1 and drives the flow guide cylinder 10 to move. The adjustment panel 2 is fixed on the adjustment base 1 by bolts. The first shaft 14 penetrates through the adjustment panel 2 and is connected to the adjustment panel 2 through a bearing. The worm 8 is fixedly connected to the first shaft 14. By rotating the first shaft 14, the worm 8 can be driven to rotate synchronously. The second shaft 12 is connected to the adjustment panel 2 through a bearing bracket, enabling the second shaft 12 to rotate. The worm gear 7 is sleeved on the second shaft 12 and meshes with the worm 8. The gear 15 is sleeved on the second shaft 12 and rotates with the rotation of the second shaft 12. The flow guide cylinder 10 is connected to the adjustment base 1 through the linkage member. By rotating the gear 15, the linkage member is driven to act, thereby driving the flow guide cylinder 10 to lift. By designing the adjustment mechanism as a worm and worm gear drive with an increased tooth ratio, when the input shaft rotates one circle, the up and down adjustment of the flow guide cylinder 10 is relatively small, enabling precise fine-tuning of the flow guide cylinder 10 and solving the problem that in the existing adjustment mechanisms, most are bevel gear drives and screw pitch adjustment. When the input shaft rotates one circle, the up and down adjustment of the cylinder body is too large and precise fine-tuning cannot be performed.

[0023] Secondly, the guide block 11 is fixedly connected to the adjustment base 1 and is located on one side of the adjustment base 1 close to the gear 15; the fixed block 5 is slidably connected to the guide block 11 and is located on one side of the guide block 11; the rack 6 is fixedly installed on the fixed block 5 and meshes with the gear 15; the connecting part connects the fixed block 5 and the flow guide cylinder 10. The guide block 11 is used to guide the movement of the fixed block 5, enabling the fixed block 5 to move vertically. The rack 6 is fixed to the fixed block 5. The connecting part is used to connect the flow guide cylinder 10 and the fixed block 5 together, enabling the flow guide cylinder 10 to move with the movement of the fixed block 5. By rotating the gear 15, the fixed block 5 moves, thereby driving the flow guide cylinder 10 to adjust its up and down position.

[0024] Meanwhile, the slider 4 is fixedly connected to the fixed block 5 and is located on the side of the fixed block 5 away from the rack 6; both sides of the connecting member 9 are fixedly connected to the slider 4 and the flow guiding cylinder 10 respectively, thereby realizing the connection between the flow guiding cylinder 10 and the fixed block 5.

[0025] In addition, the PTFE gasket 3 is arranged between the slider 4 and the fixed block 5. The fixed block 5 and the slider 4 sandwich the PTFE gasket 3 in the middle. The friction coefficient of the PTFE gasket 3 is very low. When between relatively moving mechanical components, it can reduce friction and wear. Through the PTFE gasket 3, the energy loss during the movement of the slider 4 is reduced, and the service life of the equipment is prolonged.

[0026] Finally, the handwheel 13 is fixedly connected to the first shaft rod 14 and is located at one end of the first shaft rod 14 away from the worm 8. The handwheel 13 facilitates the rotation of the first shaft rod 14. Through the handwheel 13, the worm 8 can be easily driven to rotate.

[0027] In this embodiment, when adjusting the vertical position of the flow guiding cylinder 10, rotate the handwheel 13. The handwheel 13 drives the worm 8 to rotate. The rotation of the worm 8 drives the worm wheel 7 to rotate. While the worm wheel 7 rotates, the gear 15 rotates synchronously. The rotation of the gear 15 drives the rack 6 to move up and down, thereby enabling the vertical position of the flow guiding cylinder 10 to be adjusted. In this application, by designing the adjustment mechanism as a worm and worm wheel drive with an increased tooth ratio, when the input shaft rotates one circle, the up and down adjustment of the flow guiding cylinder 10 is relatively small, and the flow guiding cylinder 10 can be precisely fine-tuned, solving the problem that since most of the existing adjustment mechanisms are bevel gear drives and screw pitch adjustment, when the input shaft rotates one circle, the up and down adjustment of the cylinder is too large and precise fine-tuning cannot be performed.

[0028] What is disclosed above is only one or more preferred embodiments of the present application, and the scope of the rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A laboratory fluidized bed bottom spray coating worm gear guide tube up and down adjustment mechanism, including an adjustment seat, characterized in that: Also included are adjustment components; The adjusting assembly includes an adjusting panel, a first shaft, a worm, a second shaft, a worm wheel, a gear, a guide tube and a linkage component. The adjusting panel is fixedly connected to the adjusting seat and is located on one side of the adjusting seat. The first shaft runs through the adjusting panel and is rotatably connected to the adjusting panel. The worm is fixedly connected to the first shaft and is located at one end of the first shaft close to the adjusting seat. The second shaft is rotatably connected to the adjusting panel and is located on a side of the adjusting panel close to the worm. The worm wheel is fixedly connected to the second shaft and meshes with the worm. The gear is sleeved on the outside of the second shaft and fixedly connected to the second shaft. The guide tube is connected to the adjusting seat through the linkage component. The linkage component is installed on the adjusting seat and drives the guide tube to move.

2. The laboratory fluidized bed bottom spray coating worm gear guide tube up and down adjustment mechanism as claimed in claim 1, characterized in that: The linkage component includes a guide block, a fixed block, a rack and a connecting portion. The guide block is fixedly connected to the adjustment seat and is located on a side of the adjustment seat close to the gear; the fixed block is slidably connected to the guide block and is located on one side of the guide block; the rack is fixedly mounted on the fixed block and meshes with the gear; the connecting portion connects the fixed block and the guide tube.

3. The laboratory fluidized bed bottom spray coating worm gear guide tube up and down adjustment mechanism as claimed in claim 2, characterized in that: The connecting part comprises a slider and a connecting piece. The slider is fixedly connected to the fixing block and is located at a side of the fixing block away from the rack. Both sides of the connecting piece are fixedly connected to the slider and the guide tube respectively.

4. The laboratory fluidized bed bottom spray coating worm gear guide tube up and down adjustment mechanism as claimed in claim 3, characterized in that: The linkage component further includes a polytetrafluoroethylene gasket, and the polytetrafluoroethylene gasket is arranged between the sliding block and the fixing block.

5. The laboratory fluidized bed bottom spray coating worm gear guide tube up and down adjustment mechanism as claimed in claim 1, characterized in that: The adjustment assembly also includes a hand wheel, which is fixedly connected to the first shaft and is located at an end of the first shaft away from the worm.

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