Rotary filter screen riding wheel mechanism of cut stem dryer

Abstract

The utility model discloses a rotary filter screen riding wheel mechanism of a cut stem dryer, two groups of riding wheel components are rotatably supported on a wallboard of the cut stem dryer, each group of riding wheel component comprises a riding wheel, a riding wheel shaft, a bearing and an end cover, the end cover is detachably mounted on the outer side of the wallboard, and a mounting cavity is formed between the end cover and the wallboard. A riding wheel shaft is rotationally installed in the installation cavity of the end cover through a bearing, a penetrating hole for the riding wheel shaft to pass through is formed in the wall plate, the portion, located on the outer side of the wall plate, of the riding wheel shaft is an outer section, the portion, located on the inner side of the wall plate, of the riding wheel shaft is an inner section, the riding wheel is fixedly arranged on the inner section of the riding wheel shaft in a sleeving mode, and a gap is reserved between the riding wheel and the wall plate. Compared with the prior art, the riding wheel mechanism has the advantages that abrasion of the riding wheel and the bearing is effectively reduced, and maintenance of the riding wheel mechanism is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette processing equipment, in particular to a rotary filter screen supporting wheel mechanism of a stem cutting machine. Background Art

[0002] The stem shred drying machine is a key equipment in the cigarette shred production line, which is used to dry the stem shreds. The stem shred drying machine consists of the front chamber, the rear chamber, the drying cylinder, the transmission device, the bracket, the hot air system, the steam pipeline system, the compressed air pipeline system and other main components. The upper part of the inner cavity of the rear chamber is equipped with a rotating filter. When working, the rotating filter filters the hot and humid air and sends it into the circulating air duct for recycling. The supporting wheel mechanism is a rotating body component that supports the rotating filter. The supporting wheel mechanism includes two sets of supporting wheel assemblies. Each set of supporting wheel assemblies includes supporting wheels that are rotatably mounted on the wall panel of the stem shred drying machine equipment. The supporting wheels of the two sets of supporting wheel assemblies support the rotating filter above. In order to reduce the friction between the rotating filter and the supporting wheel, the operation of the supporting wheel must be flexible and reliable. When the rotating filter is working normally, part of the moisture in the cylinder must pass through the rotating filter and be exhausted to the atmosphere by the fan. In the current roller assembly, the roller shaft is fixed to the equipment wall panel through the roller shaft support frame, and the roller is rotatably installed on the roller shaft through the bearing. The roller and the bearing are both located on the inner side of the equipment wall panel. Therefore, the roller and the bearing are operated in a high temperature and high humidity environment, which is prone to wear. The wear of the roller and the bearing will cause the rotating filter to rotate unsteadily and vibrate. When wear is found, the roller assembly needs to be removed to replace the roller and the bearing. During the disassembly process, since the roller and the bearing are located on the inner side of the equipment wall panel, and the roller shaft support frame has only a 25mm gap from the equipment wall panel, it is extremely difficult to remove the roller shaft, and the maintenance and replacement are difficult. It takes nearly 2 hours to replace a single roller, which seriously affects the operation efficiency of the equipment. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provides a rotary filter support wheel mechanism for a shredded stalk drying machine, so as to effectively reduce the wear of the support wheel and the bearing and facilitate the maintenance of the support wheel mechanism.

[0004] The utility model is realized by the following technical solutions:

[0005] A rotary filter roller mechanism for a shredded stem drying machine comprises two groups of roller assemblies rotatably supported on a wall panel of the shredded stem drying machine, each group of roller assemblies comprises a roller, a roller shaft, a bearing and an end cover, the end cover is detachably mounted on the outside of the wall panel, a mounting cavity is formed between the end cover and the wall panel, a roller shaft is rotatably mounted in the mounting cavity of the end cover via a bearing, a through hole is formed on the wall panel for the roller shaft to pass through, the portion of the roller shaft located on the outside of the wall panel is an outer section, and the portion located on the inside of the wall panel is an inner section, the roller is fixedly sleeved on the inner section of the roller shaft, and a gap is left between the roller and the wall panel.

[0006] As a preferred solution of the above-mentioned supporting wheel mechanism, one side of the end cover is provided with an oil filling nozzle connected to the mounting cavity inside the end cover.

[0007] As a preferred solution of the above-mentioned supporting wheel mechanism, the supporting wheel is composed of an inner wheel and an outer wheel which are sheathed inside and outside, the inner wheel is a steel wheel, and the outer wheel is a nylon wheel.

[0008] As a preferred solution of the above-mentioned supporting wheel mechanism, a section of the inner end of the inner wheel of the supporting wheel protruding from the inner end of the outer wheel is an inner wheel extension section, and a lateral locking screw hole is opened on the inner wheel extension section. The inner wheel of the supporting wheel is transmission connected with the tugboat shaft by a key connection, and is screwed into the lateral locking screw hole of the inner wheel extension section through a lateral top screw and tightened on the key to achieve fixed installation of the inner wheel and the supporting wheel shaft.

[0009] As a preferred solution of the above-mentioned supporting roller mechanism, a flange is provided at the inner end of the end cover, the flange of the end cover is in contact with the wall panel, and the flange of the end cover and the wall panel are fixedly installed by screw connection; a closed end cover plate is provided at the outer end of the end cover, and the outer limit position of the bearing on the supporting roller shaft is limited by the end cover plate.

[0010] As a preferred solution for the above-mentioned supporting roller mechanism, a limiting convex ring is provided in the middle section of the supporting roller shaft, and the outer limit position of the supporting roller on the supporting roller shaft is limited by the inner end face of the limiting convex ring, and the inner limit position of the bearing on the supporting roller shaft is limited by the outer end face of the limiting convex ring.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The utility model provides a rotary filter roller mechanism for a shredded rice drying machine, which avoids the bearing from working in a high temperature and high humidity environment by moving the installation position of the bearing from the original inner side of the wall panel to the outer side of the wall panel, thereby protecting the bearing, and the tugboat shaft is rotatably supported in the end cover through the bearing, while the supporting wheel is directly fixedly mounted on the supporting wheel shaft, and the end cover is located on the outer side of the wall panel, which is convenient for disassembly and maintenance of the supporting wheel assembly; there is no direct contact between the bearing and the supporting wheel, thereby avoiding wear between the two, and ensuring the effectiveness and stability of the use of the entire supporting wheel assembly; in addition, the supporting wheel is designed as a steel wheel and a nylon wheel with an inner and outer set, which improves the overall strength, effectively avoids its deformation and damage, reduces the frequency of rotary filter transmission failures caused by damage to the supporting wheel or the bearing, and ensures the continuity of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional assembly diagram of the utility model.

[0014] Figure 2 It is a three-dimensional exploded view of the utility model.

[0015] Figure 3 It is a stereogram of the supporting wheel of the utility model.

[0016] Numbers in the figure: 1 supporting wheel; 2 supporting wheel shaft; 3 bearing; 4 end cover; 5 spacer; 6 oiling nozzle; 7 inner wheel; 8 outer wheel; 9 lateral locking screw hole; 10 lateral top screw; 11 flat key; 12 limiting convex ring; 13 flange. DETAILED DESCRIPTION

[0017] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0018] See also Figures 1 to 3 The present embodiment discloses a rotary filter roller mechanism for a stalk drying machine. Two groups of roller assemblies are rotatably supported on the wallboard of the stalk drying machine. Each group of roller assemblies includes a roller 1, a roller shaft 2, a bearing 3 and an end cover 4. The end cover 4 is detachably mounted on the outside of the wallboard. A mounting cavity is formed between the end cover 4 and the wallboard. The roller shaft 2 is rotatably mounted in the mounting cavity of the end cover 4 through the bearing 3. Two bearings 3 are mounted on the wheel shaft. The two bearings 3 are separated by a spacer 5, which plays a role in buffering the working load of the bearing 3 and positioning. A through hole is opened on the wallboard for the roller shaft 2 to pass through. The part of the roller shaft 2 located on the outside of the wallboard is the outer section, and the part located on the inside of the wallboard is the inner section. The roller 1 is fixedly mounted on the inner section of the roller shaft 2, and a gap is left between the roller 1 and the wallboard. The wallboard is located in the gap between the roller 1 and the end cover 4.

[0019] One side of the end cover 4 is provided with an oiling nozzle 6 which is connected to the internal mounting cavity of the end cover 4 , so that an external oil gun can be used to inject lubricating oil into the internal mounting cavity of the end cover 4 to lubricate the internal bearing 3 .

[0020] The supporting wheel 1 is composed of an inner wheel 7 and an outer wheel 8 which are set inside and outside. The inner wheel 7 is a steel wheel, and the outer wheel 8 is a nylon wheel. The outer wheel 8 and the inner wheel 7 are interference fit. The inner end of the inner wheel 7 of the supporting wheel 1 protrudes from the inner end of the outer wheel 8, which is the extension section of the inner wheel 7. The extension section of the inner wheel 7 is provided with a lateral locking screw hole 9. The inner wheel 7 of the supporting wheel 1 is connected to the tugboat shaft by a key connection, and the lateral top screw 10 is screwed into the lateral locking screw hole 9 of the extension section of the inner wheel 7 and pressed against the flat key 11 to achieve the fixed installation of the inner wheel 7 and the supporting wheel shaft 2. A limiting convex ring 12 is provided in the middle section of the supporting wheel shaft 2, and the outer limit position of the supporting wheel 1 on the supporting wheel shaft 2 is limited by the inner end face of the limiting convex ring 12.

[0021] The inner end of the end cover 4 is provided with a flange 13, which fits the wallboard and is fixedly mounted on the wallboard by screw connection; the outer end of the end cover 4 is provided with a closed end cover 4 plate, which limits the outer limit position of the bearing 3 on the supporting roller shaft 2. The inner limit position of the bearing 3 on the supporting roller shaft 2 is limited by the outer end face of the limiting convex ring 12 on the supporting roller shaft 2.

[0022] During operation, one end of the rotating filter screen of the shredded stalk drying machine is directly driven by the motor reducer, and the bottom of the other end of the rotating filter screen is supported by two supporting wheels 1. The rotating filter screen drives the supporting wheel 1 to rotate, and the supporting wheel 1 drives the supporting wheel shaft 2 to rotate through the flat key 11. Because the supporting wheel shaft 2 and the inner ring of the bearing 3 have an interference fit, the inner ring of the bearing 3 rotates together when the supporting wheel shaft 2 rotates.

[0023] The supporting roller assembly provided in this embodiment fixes the end cover 4 on the wall panel of the equipment, and rotatably supports the tugboat shaft in the end cover 4 through the bearing 3, while the supporting roller 1 is directly fixedly installed on the supporting roller shaft 2. There is no direct contact between the bearing 3 and the supporting roller 1, thereby avoiding wear between the two. In addition, by designing the supporting roller 1 as a steel wheel and a nylon wheel with an inner and outer set, its overall strength is improved, thereby ensuring the effectiveness and stability of the use of the entire supporting roller assembly.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary filter screen support wheel mechanism for a stalk drying machine, wherein two sets of support wheel assemblies are rotatably supported on the wall plate of the stalk drying machine. Features: Each set of supporting roller assemblies includes a supporting roller, a supporting roller shaft, a bearing and an end cover. The end cover is detachably mounted on the outside of the wall panel. A mounting cavity is formed between the end cover and the wall panel. The supporting roller shaft is rotatably mounted in the mounting cavity of the end cover through a bearing. A through hole is opened on the wall panel for the supporting roller shaft to pass through. The part of the supporting roller shaft located on the outside of the wall panel is the outer section, and the part located on the inside of the wall panel is the inner section. The supporting roller is fixedly mounted on the inner section of the supporting roller shaft, and a gap is left between the supporting roller and the wall panel.

2. A rotary filter screen support wheel mechanism for a shredded stem drying machine as claimed in claim 1, Features: One side of the end cover is provided with an oil filling nozzle which is connected with the mounting cavity inside the end cover.

3. A rotary filter screen support wheel mechanism for a shredded stem drying machine as claimed in claim 1, Features: The supporting wheel is composed of an inner wheel and an outer wheel which are set inside and outside. The inner wheel is a steel wheel and the outer wheel is a nylon wheel.

4. A rotary filter screen support wheel mechanism for a shredded stem drying machine as claimed in claim 3, Features: The inner end of the inner wheel of the supporting wheel protrudes from the inner end of the outer wheel, which is the inner wheel extension section. A lateral locking screw hole is opened on the inner wheel extension section. The inner wheel of the supporting wheel is connected to the tugboat shaft through a key connection to achieve transmission connection, and the lateral top screw is screwed into the lateral locking screw hole of the inner wheel extension section and pressed against the key to achieve fixed installation of the inner wheel and the supporting wheel shaft.

5. A rotary filter screen support wheel mechanism for a shredded stem drying machine as claimed in claim 1, Features: A flange is provided at the inner end of the end cover, which fits the wall panel and is fixedly installed on the wall panel by screw connection; a closed end cover plate is provided at the outer end of the end cover, and the outer limit position of the bearing on the supporting roller shaft is limited by the end cover plate.

6. A rotary filter screen support wheel mechanism for a shredded stem drying machine as claimed in claim 1, Features: The middle section of the supporting roller shaft is provided with a limiting convex ring, and the outer limit position of the supporting roller on the supporting roller shaft is limited by the inner end surface of the limiting convex ring, and the inner limit position of the bearing on the supporting roller shaft is limited by the outer end surface of the limiting convex ring.

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