Moisture-removing rotary net riding wheel assembly of drum-type cut tobacco dryer

Abstract

The utility model discloses a moisture-removing rotary net riding wheel assembly of a drum-type cut tobacco dryer, which comprises a riding wheel seat, a central shaft, a bearing and a riding wheel, the riding wheel seat is positioned on one side of the riding wheel, the bearing is arranged in the riding wheel seat, one end of the central shaft is connected with the riding wheel, and the other end of the central shaft extends into the riding wheel seat to be connected with the bearing; a sealing piece is arranged at the joint of the central shaft and the riding wheel seat; a limiting unit is arranged in the riding wheel base and used for limiting the bearing and the center shaft to move in the axial direction. According to the riding wheel assembly, the bearings are arranged in the riding wheel base and sealed through the felt, dust can be effectively prevented from entering the riding wheel assembly, the situation that the bearings are heated and blocked due to the fact that the dust enters the bearings, and normal operation of the moisture removal rotating net and the cut-tobacco dryer is affected is avoided, meanwhile, the two bearings are adopted and separated through the space ring, and operation stability is guaranteed; the force applied to the bearing by the central shaft can be effectively relieved, and the service life of the bearing is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of moisture removal net rotating supporting wheels, in particular to a moisture removal net rotating supporting wheel assembly of a drum type silk drying machine. Background Art

[0002] The dehumidification rotary screen is an important component of the drum-type tobacco drying machine. The dehumidification rotary screen is driven by a motor to rotate to prevent dust and tobacco from adhering to the screen during the dehumidification process of the tobacco drying machine and clogging the screen, thereby affecting the moisture content of the tobacco drying outlet.

[0003] The screen is supported by the supporting wheel below during rotation. The dehumidification screen itself is large in size and heavy in weight, so the supporting wheel of the dehumidification screen is under great pressure. In addition, due to the high dust content at the position of the dehumidification screen, the existing supporting wheel assembly structure has poor sealing performance, and dust can easily enter the bearing inside it, causing the bearing to heat up and get stuck. After the bearing is stuck, the nylon roller of the supporting wheel rubs against the raceway. After a long time, the inner ring of the nylon roller and the center axis are displaced, and the inner surface is worn and cracked or even falls off, causing the screen to jump and make abnormal noises during operation, seriously affecting the normal operation of the dehumidification screen and the silk drying machine. In severe cases, it will cause the rotating shaft of the screen to break and the silk drying machine to stop, which has a great impact on the moisture content of the silk drying outlet. In addition, when disassembling and replacing the damaged dehumidification screen supporting wheel, it is difficult to disassemble the cover plate and the bearing due to the unreasonable existing structural design. Utility Model Content

[0004] In view of the above problems, the utility model provides a dehumidification screen support wheel assembly for a drum-type silk drying machine, which can effectively support the dehumidification screen and effectively improve its sealing performance, increase its service life, and ensure the normal function of the dehumidification screen.

[0005] Specifically, the utility model provides a dehumidification rotating net supporting roller assembly of a drum-type silk drying machine, comprising a supporting roller seat, a central shaft, a bearing and a supporting roller, wherein the supporting roller seat is located at one side of the supporting roller, the bearing is arranged in the supporting roller seat, one end of the central shaft is connected to the supporting roller, and the other end extends into the supporting roller seat and is connected to the bearing;

[0006] A sealing member is provided at the connection between the central shaft and the supporting wheel seat;

[0007] A limiting unit is provided in the supporting roller seat, and the limiting unit is used to limit the axial movement of the bearing and the central shaft.

[0008] Furthermore, the hole diameter at the connection between the supporting wheel seat and the central shaft is smaller than the outer diameter of the bearing, and the limiting unit includes:

[0009] at least one spacer ring, disposed on the central shaft, for limiting the axial movement of the bearing;

[0010] The retaining spring is arranged on the central shaft and located at an end of the bearing away from the supporting wheel, and is used for limiting the axial movement of the central shaft.

[0011] Furthermore, two bearings and two spacers are provided, and the two spacers are respectively located on the side of the two bearings away from the supporting wheel.

[0012] Furthermore, the supporting wheel is connected to the central shaft via a key, a supporting wheel cover is provided on the side of the supporting wheel away from the supporting wheel seat, and the supporting wheel cover is connected to the central shaft via screws.

[0013] Furthermore, a roller seat end cover is provided at one end of the roller seat away from the roller.

[0014] Furthermore, a waist-shaped hole is provided on the supporting wheel seat.

[0015] Furthermore, the sealing element is felt.

[0016] Furthermore, the surface of the supporting wheel is provided with knurling.

[0017] Furthermore, the supporting wheel is made of brass.

[0018] Working principle:

[0019] The supporting wheel 3 is key-connected to the center shaft 2, and the other end of the center shaft 2 is installed in the supporting wheel seat 1. The two are clearance-fitted and over-fitted with the two bearings 4. The two bearings 4 are separated by a spacer ring 5, and the retaining spring 7 is used to limit the axial position of the center shaft 2. The support of the tide-draining rotating net 9 is achieved through the bearings 4, the center shaft 2 and the supporting wheel 3.

[0020] A felt seal 6 is provided at the connection between the central shaft 2 and the roller seat 1, so that the bearing 4 is in a relatively closed roller seat 1, which does not interfere with the operation of the bearing 4 and plays a role in sealing the bearing 4, thereby reducing dust entry.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] (1) The dehumidifying screen support roller assembly of the drum-type silk drying machine provided by the utility model places the bearing inside the support roller seat and seals it with felt, which can effectively block the entry of dust, thereby preventing dust from entering the bearing and causing it to heat up and get stuck, affecting the normal operation of the dehumidifying screen and the silk drying machine.

[0023] (2) Two bearings are used inside the roller seat, separated by a spacer ring in the middle. While ensuring operational stability, it can effectively alleviate the force applied by the center shaft to the bearings, effectively extending the service life of the bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the moisture removal and rotating net support wheel assembly of the drum-type silk drying machine in Example 1;

[0025] Figure 2 It is an exploded view of the dehumidification and rotating net support wheel assembly of the drum-type silk drying machine in Example 1;

[0026] Figure 3 It is a cross-sectional view of the moisture removal net support wheel assembly of the drum-type silk drying machine in Example 1;

[0027] Figure 4 is a schematic structural diagram of the central axis in Example 1;

[0028] Figure 5 It is a structural schematic diagram of the supporting wheel seat in Example 1;

[0029] Figure 6 This is a diagram showing the usage status of the moisture removal and rotating net support wheel assembly of the drum-type silk drying machine in Example 1.

[0030] Figure numerals: 1-roller seat; 11-roller seat end cover; 12-waist-shaped hole; 2-center axis; 3-roller; 31-roller cover plate; 4-bearing; 5-spacer; 6-felt; 7-circlip; 8-flat key; 9-tide-draining net. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0032] Example 1

[0033] like Figure 1-6 As shown, this embodiment provides a dehumidifying rotating net roller assembly of a drum-type silk drying machine, including a roller seat 1, a central shaft 2, a bearing 4 and a roller 3. One end of the central shaft 2 extends into the interior of the roller seat 1, and the other end is used to install the roller 3. The central shaft 2 and the roller 3 are overfitted. The end of the central shaft 2 extending into the roller seat 1 is equipped with a bearing 4. The end face of the roller seat 1 is provided with a hole larger than the size of the central shaft 2, so that the central shaft 2 can penetrate into the container of the roller seat 1. The two are clearance-fitted, and the radial distance between the end face of the roller seat 1 and the middle position of the central shaft 4 is 2mm. A 10mm thick plate extends on both sides of the end face of the roller seat 1, so that its cross section is T-shaped, and there are two waist-shaped holes 12 on the plate to facilitate the overall installation of the roller assembly. There are three screw holes on the top end face away from the roller 3, which is connected to the roller seat end cover 11 by three hexagonal bolts. The three hexagonal bolts can be loosened to open the roller seat end cover 11 to remove the internal bearing 4 and spacer 5.

[0034] The support roller 3 is made of brass, which has higher hardness than nylon. It will not damage the roller when running on the rotating net roller. The outer surface of the support roller 3 has fine knurling to increase the friction between the support roller 3 and the raceway, making it less likely to slip. The support roller 3 and the center shaft 4 are connected and matched by a flat key 8, so that the inner ring of the support roller 3 will not rotate relative to the center shaft 2, causing unnecessary wear, and the reliability is effectively improved. An M6 hole is opened on the top of one end of the center shaft 2 that matches the support roller 3, and a support roller cover plate 31 is designed on the top. The support roller cover plate 31 is fixed to the end face of the center shaft 2 by countersunk bolts to prevent the support roller 3 from axial movement.

[0035] The inner aperture of the roller seat 1 is over-fitted with the outer diameter of the bearing 4. At the same time, a step hole with a height of 1 mm and a diameter the same as the outer diameter of the felt 6 is provided at one end of the roller seat 1 near the roller 3. The outer diameter of the felt 6 is smaller than the inner aperture of the roller seat 1, so the felt 6 can be installed conveniently. After the felt 6 is placed in, the bearing 4 can be installed. The outer ring of the bearing 4 can be pressed on the edge of the inner step of the roller seat 1, which can achieve a sealing effect without interfering with the operation of the bearing 4.

[0036] In order to effectively alleviate the force applied by the central shaft 2 to the bearing 4 and extend the service life of the bearing, two bearings 4 are provided. The bearing 4 adopts a deep groove ball bearing. The position of the bearing 4 is axially positioned by the roller seat 3, two spacers 5 and the retaining spring 7. One of the spacers 5 is located between the two bearings 4 and its width is slightly larger. The purpose is to increase the distance between the two bearings 4 and to make the force more uniform. The other spacer 5 is located between the second bearing 4 and the roller seat end cover 11. The size of the spacer is the distance from the end face of the second bearing 4 to the roller seat end cover 11 after the bearing 4 is installed in place. The outer ring of the bearing 4 is limited to axial movement by the spacer 5, and the central shaft 2 is limited to the axial position by the retaining spring 7.

[0037] The assembly process of the supporting wheel components is as follows:

[0038] First, put the felt 6 into the circular groove on the bottom surface of the inner hole of the roller seat 1, and then use a tool to knock the first bearing 4 into the inner hole of the roller seat 1 until it is in place, then put in the first spacer 5. The first spacer 5 and the inner hole are clearance-matched for easy disassembly and assembly, then put in the second bearing 4 and knock it into place, and put in the second spacer 5. After turning over, knock the center shaft 2 into the roller seat 1 from the bottom of the roller seat 1. The center shaft 2 and the bearing 4 are clearance-matched. After the center shaft 2 is knocked into place, the retaining ring groove on its shaft is exposed. After turning over the roller seat 1, use retaining ring pliers to fix the retaining ring 7 to the center shaft 2 to limit the axial movement of the center shaft 2, and then cover the roller seat end cover 11 of the roller seat 1 and tighten it with screws. Next, install the other end of the center shaft 2. First, install the flat key 8 onto the center shaft 2, then align it with the keyway hole on the supporting roller 3, use a hammer to knock the supporting roller 3 into place at the axial step position of the center shaft 2, and then install the supporting roller cover 31, and then tighten it with countersunk screws. When tightening the bolts, you can use a wrench to clamp the slot in the middle position of the center shaft 2, and use the wrench to tighten the countersunk bolts of the supporting roller cover 31. The supporting roller cover 31 can effectively limit the axial movement of the supporting roller 3.

[0039] After the installation of the supporting roller assembly is completed, two sets of supporting roller assemblies are installed to the roller circle position of the silk drying machine dehumidification rotary net 9. Since there are two waist-shaped holes 12 on both sides of the supporting roller seat 1, there is a large margin to adjust the position of the supporting roller assembly to ensure that the supporting roller can be effectively installed to the position where the silk drying machine rotary net supporting roller rolls to. At the same time, after the installation is completed, the dehumidification rotary net can run smoothly, thereby ensuring the normal function of the dehumidification rotary net and ensuring the stability of the moisture content at the silk drying machine outlet.

[0040] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A dehumidifying net support roller assembly of a drum-type silk drying machine, comprising a support roller seat (1), a central shaft (2), a bearing (4) and a support roller (3), characterized in that: The supporting wheel seat (1) is located on one side of the supporting wheel (3), the bearing (4) is arranged in the supporting wheel seat (1), one end of the central axis (2) is connected to the supporting wheel (3), and the other end extends into the supporting wheel seat (1) and is connected to the bearing (4); A sealing member is provided at the connection between the central shaft (2) and the supporting wheel seat (1); A limiting unit is provided inside the supporting wheel seat (1), and the limiting unit is used to limit the axial movement of the bearing (4) and the central shaft (2).

2. The dehumidification net rotating wheel assembly of the drum-type silk drying machine according to claim 1, characterized in that: The hole diameter at the connection between the supporting wheel seat (1) and the central shaft (2) is smaller than the outer diameter of the bearing (4), and the limiting unit comprises: at least one spacer (5), arranged on the central shaft (2) and used to limit the axial movement of the bearing (4); A retaining spring (7) is arranged on the central shaft (2) and is located at an end of the bearing (4) away from the supporting wheel (3), and is used to limit the axial movement of the central shaft (2).

3. The dehumidification net-turning wheel assembly of the drum-type silk drying machine according to claim 2, characterized in that: Two bearings (4) and two spacers (5) are provided, and the two spacers (5) are respectively located on the side of the two bearings (4) away from the supporting wheel (3).

4. The dehumidification net rotating wheel assembly of the drum-type silk drying machine according to claim 1, characterized in that: The supporting wheel (3) is connected to the central shaft (2) via a key; a supporting wheel cover plate (31) is provided on the side of the supporting wheel (3) away from the supporting wheel seat (1); and the supporting wheel cover plate (31) is connected to the central shaft (2) via screws.

5. The dehumidification net rotating wheel assembly of the drum-type silk drying machine according to claim 1, characterized in that: An end of the supporting roller seat (1) away from the supporting roller (3) is provided with a supporting roller seat end cover (11).

6. The dehumidification net rotating wheel assembly of the drum type silk drying machine according to claim 1, characterized in that: The supporting wheel seat (1) is provided with a waist-shaped hole (12).

7. The dehumidification net rotating wheel assembly of the drum type silk drying machine according to claim 1, characterized in that: The sealing element is felt (6).

8. The dehumidification net-turning wheel assembly of the drum-type silk drying machine according to claim 1, characterized in that: The surface of the supporting wheel (3) is provided with knurling.

9. The dehumidification net rotating wheel assembly of the drum-type silk drying machine according to any one of claims 1 to 8, characterized in that: The supporting wheel (3) is made of brass.

Images