Dustproof split bearing seat and dustproof tail disc

Abstract

The utility model relates to a dustproof sealed split bearing seat and dustproof sealed tail disc, the dustproof sealed split bearing seat includes bearing chamber and locating plug body, is provided with bearing mounting hole on bearing chamber, the upper portion of bearing mounting hole inboard wall is provided with abutment ring, and the top of abut ring is provided with sealing ring alpha, and locating plug body is inserted into bearing mounting hole from the bottom of bearing chamber, and the dustproof sealed tail disc locating plug body is provided with sealing ring beta, the dustproof sealed tail disc includes disc -shaped bearing mounting seat, and the top surface of bearing mounting seat is provided with several strip protrusions, and the bottom surface of sealing ring beta is pasted with the top surface of strip protrusion. The dustproof sealed tail disc of the utility model puts the rolling bearing into the bearing chamber, and utilizes locating plug body to abut and fix rolling bearing, when rolling bearing rotates, the lubricating grease will gradually fill in the gap between the auger shaft and the inner wall of bearing chamber, and the upper and lower two sealing rings of bearing chamber are respectively limited and fixed, and will not cause sealing failure because of the falling of sealing ring.

Description

Technical Field

[0001] This utility model relates to the technical field of material conveying equipment, and in particular to a dustproof and sealed split bearing housing and a dustproof and sealed tail plate. Background Technology

[0002] Split bearings are generally used in equipment such as augers operating in dusty environments to reduce the entry of powdery materials into the bearing and prevent them from affecting its normal operation. Existing split bearings typically consist of a bearing housing on the outside of the auger, with the bearing embedded within it, and then fitted onto the auger shaft, as illustrated by Chinese patent CN222683409U - Dust-isolated auger split base.

[0003] However, during operation, the grease inside the bearing can be squeezed out, causing the dust seal covering the bearing to be squeezed off by the grease, resulting in the failure of the bearing's own seal. At this time, not only will the grease inside the bearing be lost, but some dust will also enter the bearing, seriously affecting the normal service life of the bearing.

[0004] Therefore, a split bearing is needed to prevent the dust seal from falling off under pressure. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems by providing a dustproof and sealed split bearing housing and a dustproof and sealed tail plate.

[0006] The technical solution of this utility model is: a dustproof and sealed split bearing housing, which has a rolling bearing installed inside, is installed on the auger tail plate, and cooperates with the auger shaft; This split bearing housing includes a bearing chamber and a locating plug. The bearing chamber is frustum-shaped, with a flange coaxially connected to its bottom. Several reinforcing ribs are provided between the flange and the outer wall of the bearing chamber. These reinforcing ribs are evenly distributed around the circumference of the bearing chamber's axis, increasing the connection strength between the flange and the bearing chamber.

[0007] The flange has several bolt holes, and the reinforcing ribs are all located between two adjacent bolt holes. The reinforcing ribs do not affect the normal use of the bolt holes. There are 12 bolt holes and four reinforcing ribs.

[0008] The bearing housing has vertical bearing mounting holes; these holes are circular, coaxial with the bearing housing, and their diameter matches the outer diameter of the rolling bearing; a protruding abutment ring is provided on the upper part of the inner wall of the bearing mounting hole, the inner diameter of which is larger than the diameter of the auger shaft; a sealing ring is provided on top of the abutment ring, the inner diameter of which is slightly larger than the diameter of the auger shaft. The auger shaft passes through the center of the sealing ring, leaving a gap between them to prevent friction between the sealing ring and the auger shaft, thus extending the service life of the equipment.

[0009] The locating plug is cylindrical, and its outer diameter matches the diameter of the bearing mounting hole. The locating plug is inserted into the bearing mounting hole from the bottom of the bearing chamber, and the bottom surface of the locating plug is flush with the bottom surface of the bearing chamber. A gap is left between the top surface of the locating plug and the bottom surface of the abutment ring. The rolling bearing is positioned within the clearance; its height matches the clearance. The top and bottom surfaces of the rolling bearing abut against the bottom surface of the abutment ring and the top surface of the locating plug, respectively. This design effectively limits the position of the rolling bearing, increasing its operational stability.

[0010] Preferably, a limiting disc is concentrically provided on the bottom surface of the positioning plug, and the diameter of the limiting disc is larger than that of the positioning plug; a corresponding locking recess is provided on the bottom surface of the bearing chamber, and the limiting disc is located within the locking recess. The corresponding limiting disc and locking recess can restrict the position of the positioning plug, preventing the positioning plug from exerting excessive squeezing force on the rolling bearing, which could cause deformation of the rolling bearing and affect its normal use.

[0011] Preferably, the positioning plug body is provided with a vertical through hole, which is coaxial with the positioning plug body; the diameter of the through hole is larger than the diameter of the auger shaft; the auger shaft passes through the through hole and cooperates with the rolling bearing. The auger shaft passes through the through hole with a gap between them, so that the positioning plug body will not rub against the auger shaft, thus extending the overall service life of the equipment.

[0012] Furthermore, the positioning plug body has a circular recess A at its center, and a sealing ring B is correspondingly disposed within the circular recess A; the outer side of the sealing ring B fits against the side of the circular recess A; the inner diameters of the sealing rings A and B are the same, both matching the diameter of the auger shaft. The sealing ring B is positioned at the bottom of the positioning plug body, so that when the split bearing is installed, the sealing ring B will be held in place, preventing it from falling off.

[0013] Preferably, a horizontal circular groove is concentrically arranged within the bearing mounting hole, and a retaining spring is correspondingly arranged within the circular groove; the retaining spring is positioned above the sealing ring, and the sealing ring abuts against the retaining spring. The retaining spring restricts the sealing ring, fixing its position and preventing it from falling off and causing seal failure.

[0014] A dustproof sealing tail plate that mates with the aforementioned dustproof seal split bearing housing includes a disc-shaped bearing mounting base; the split bearing housing is correspondingly mounted on the bearing mounting base; a flange B is coaxially provided on the bottom surface of the bearing mounting base; the flange B is connected to the auger cylinder. The bearing mounting base is provided with a central hole, which corresponds to the through hole of the positioning plug; the top surface of the bearing mounting base is provided with several strip-shaped protrusions, which are all arranged radially along the bearing mounting base; the strip-shaped protrusions are evenly distributed around the circumference of the central hole; there are four strip-shaped protrusions.

[0015] A threaded blind hole is provided on the top surface of the strip-shaped protrusion away from the central hole; this threaded blind hole corresponds to flange A; multiple strip-shaped protrusions can support the split bearing housing, while increasing the depth of the threaded blind hole and increasing the connection strength between the tail plate and the split bearing housing. The threaded blind hole corresponds one-to-one with the bolt holes on flange A; after the bolt passes through the bolt hole, it is threaded into the threaded blind hole.

[0016] The other end of the strip-shaped protrusion is aligned with the edge of the central hole; the bottom surface of sealing ring B is in contact with the top surface of the strip-shaped protrusion. The ends of several strip-shaped protrusions can serve as multiple annularly distributed support surfaces, which can support the bottom of sealing ring B and prevent sealing ring B from falling off.

[0017] Preferably, an arc-shaped plate is provided at the end of the strip-shaped protrusion away from the central hole, and the arc-shaped plate protrudes upward; the inner side of the arc-shaped plate fits against the side of the flange A. The arc-shaped plate can limit the position of the split bearing housing, which facilitates the installation of the split bearing housing.

[0018] Preferably, the bottom of the flange B is provided with a circular recess B, and a sealing ring C is coaxially arranged in the circular recess B; the outer side of the sealing ring C fits against the inner side of the circular recess B; the inner diameter of the sealing ring C matches the inner diameter of the auger cylinder; the sealing ring C is provided between the flange B and the auger cylinder, which can increase the overall sealing performance of the equipment.

[0019] The depth of the circular recess B is 1 / 2 to 2 / 3 of the thickness of the sealing ring C; a corresponding circular recess C is provided on the auger cylinder, and the bottom surface of the sealing ring C abuts against the bottom surface of the circular recess C. The position of the sealing ring C is offset from the connection surface of the auger cylinder and flange B, which can further improve the sealing performance of the auger cylinder at the connection.

[0020] Preferably, the bottom surface of the dustproof sealing tail plate is provided with an annular groove, which is coaxial with the center hole; a pressure cap is correspondingly sleeved on the auger shaft; The pressure plate is disc-shaped, with its diameter matching the annular groove. An annular protrusion is provided on the edge of the pressure plate, the wall thickness and height of which match the width and depth of the annular groove, respectively. The annular protrusion is positioned within the annular groove. A sleeve is located at the center of the pressure plate, which fits onto the outside of the auger shaft and is secured with fasteners. The pressure plate, facing the annular groove, prevents powdery materials inside the auger cylinder from entering the tail disc, improving sealing performance. Furthermore, when the auger shaft rotates, the pressure plate rotates along with it, causing the material at the inner end of the auger cylinder to move, thus agitating the material and preventing it from accumulating at the end of the auger cylinder for extended periods, which could lead to material deterioration.

[0021] Preferably, flange C is provided at the end of the auger cylinder, and flange B is correspondingly connected to flange C; flange B has several circular holes evenly distributed around its circumference; bolts are installed in each of the circular holes; flange B also has several threaded through holes; the threaded through holes are evenly distributed around its circumference; the threaded through holes are all located between the circular holes of flange B; set screws are correspondingly installed in the threaded through holes; the ends of the set screws abut against the solid part of flange B. When disassembling the tail plate and the split bearing housing, the set screws in the threaded through holes can be used to abut against the end of the auger cylinder, thereby allowing the tail plate and the split bearing housing to be pushed out together, facilitating disassembly.

[0022] The beneficial effects of this utility model are as follows: The dustproof and sealed split bearing housing and dustproof and sealed tail plate of this utility model have the following advantages: This invention places the rolling bearing into the bearing chamber and uses a positioning plug to abut and fix the rolling bearing. When the rolling bearing rotates, the grease will gradually fill the gap between the auger shaft and the inner wall of the bearing chamber. The upper and lower sealing rings of the bearing chamber are respectively restricted and fixed, so that the sealing will not fail due to the sealing rings falling off. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the dustproof and sealed split bearing housing of this utility model; Figure 2 yes Figure 1 Top view; Figure 3 yes Figure 2 AA section view; Figure 4 This is a schematic diagram of the structure of the dustproof and sealed tail disc of this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the dustproof and sealed tail disc of this utility model. Figure 2 ; Figure 6 yes Figure 4 Top view; Figure 7 This is a structural diagram of a dustproof and sealed split bearing housing and a dustproof and sealed tail plate; Figure 8 yes Figure 7 Side view; Figure 9 yes Figure 8 BB section view; Figure 10 yes Figure 7 Top view; Figure 11 yes Figure 10 CC-direction sectional perspective; Figure 12 This is a schematic diagram of the capping mechanism; Figure 13 This is a schematic diagram of the dustproof and sealed tailplate in Embodiment 4 of this utility model; Figure 14 This is a schematic diagram of the structure of the dustproof and sealed split bearing housing in Embodiment 5 of this utility model; Figure 15 yes Figure 14 Top view; Figure 16 yes Figure 15 DD sectional view.

[0024] In the diagram: 00. Rolling bearing, 01. Screwdriver cylinder, 011. Flange C, 012. Circular recess C, 02. Screwdriver shaft. 1. Bearing housing; 11. Flange A; 12. Reinforcing rib; 13. Bearing mounting hole; 131. Abutment ring; 14. Locating plug; 141. Limiting plate; 142. Circular recess A; 143. Through hole; 15. Sealing ring A; 16. Sealing ring B; 17. Snap ring; 18. End plate. 2. Bearing mounting base, 21. Flange B, 211. Threaded through hole, 212. Circular recess B, 22. Center hole, 23. Strip-shaped protrusion, 231. Threaded blind hole, 232. Arc plate, 24. Sealing ring C, 25. Annular groove, 26. Limiting ring, 3. Gland, 31. Annular protrusion, 32. Sleeve. Detailed Implementation

[0025] Example 1: See Figure 1-3 A dustproof and sealed split bearing housing is installed on the tail plate of the auger shaft 02. A rolling bearing 00 is installed inside the bearing housing and is installed on the tail plate of the auger shaft 02 to cooperate with the auger shaft 02. The split bearing housing includes a bearing chamber 1 and a positioning plug 14. The bearing chamber 1 is generally frustum-shaped, and a flange A 11 is coaxially connected to its bottom. Several reinforcing ribs 12 are provided between the flange A 11 and the outer wall of the bearing chamber 1. The reinforcing ribs 12 are evenly distributed around the circumference of the bearing chamber 1. This increases the connection strength between the flange A 11 and the bearing chamber 1.

[0026] The flange A11 has several bolt holes, and the reinforcing ribs 12 are all located between two adjacent bolt holes. The setting of the reinforcing ribs 12 does not affect the normal use of the bolt holes. There are 12 bolt holes and four reinforcing ribs 12.

[0027] A vertical bearing mounting hole 13 is provided on the bearing housing 1. The bearing mounting hole 13 is circular and coaxially arranged with the bearing housing 1, and its diameter matches the outer diameter of the rolling bearing 00. A protruding abutment ring 131 is provided on the upper part of the inner wall of the bearing mounting hole 13. The inner diameter of the abutment ring 131 is larger than the diameter of the auger shaft 02. A sealing ring 15 is provided on the top of the abutment ring 131. The inner diameter of the sealing ring 15 is slightly larger than the diameter of the auger shaft 02. The auger shaft 02 passes through the center of the sealing ring 15, leaving a gap between them to prevent the sealing ring 15 from rubbing against the auger shaft 02 and extend the service life of the equipment.

[0028] The positioning plug 14 is cylindrical, and its outer diameter matches the diameter of the bearing mounting hole 13. The positioning plug 14 is inserted into the bearing mounting hole 13 from the bottom of the bearing chamber 1, and the bottom surface of the positioning plug 14 is flush with the bottom surface of the bearing chamber 1. A gap is left between the top surface of the positioning plug 14 and the bottom surface of the abutment ring 131. The rolling bearing 00 is disposed within the clearance; the height of the rolling bearing 00 matches the clearance. The top and bottom surfaces of the rolling bearing 00 abut against the bottom surface of the abutment ring 131 and the top surface of the positioning plug 14, respectively. This allows the position of the rolling bearing 00 to be defined, increasing the operational stability of the rolling bearing 00.

[0029] A limiting disc 141 is concentrically arranged on the bottom surface of the positioning plug 14, and the diameter of the limiting disc 141 is larger than that of the positioning plug 14. A corresponding locking recess is provided on the bottom surface of the bearing chamber 1, and the limiting disc 141 is located in the locking recess. The limiting disc 141 corresponds to the locking recess, which can limit the position of the positioning plug 14 and prevent the positioning plug 14 from exerting excessive pressure on the rolling bearing 00, which could cause the rolling bearing 00 to deform and affect its normal use.

[0030] The positioning plug 14 has a vertical through hole 143, which is coaxial with the positioning plug 14. The diameter of the through hole 143 is larger than the diameter of the auger shaft 02. The auger shaft 02 passes through the through hole 143 and mates with the rolling bearing 00. The auger shaft 02 passes through the through hole 143 with a gap between them, so that the positioning plug 14 will not rub against the auger shaft 02, thus extending the overall service life of the equipment.

[0031] The positioning plug body 14 has a circular recess A 142 at its center, and a sealing ring B 16 is correspondingly arranged inside the circular recess A 142. The outer side of the sealing ring B 16 fits against the side of the circular recess A 142. The inner diameters of the sealing rings A 15 and B 16 are the same, both matching the diameter of the auger shaft 02. The sealing ring B 16 is positioned at the bottom of the positioning plug body 14. When the split bearing is installed on the tailstock, the sealing ring B 16 will be held in place by the top surface of the tailstock, preventing it from falling off.

[0032] A horizontal circular groove is concentrically provided inside the bearing mounting hole 13, and a retaining spring 17 is correspondingly provided in the circular groove; the retaining spring 17 is located on the upper part of the sealing ring 15, and the sealing ring 15 abuts against the retaining spring 17. The retaining spring 17 is used to restrict the sealing ring 15, so that the position of the sealing ring 15 is fixed and to prevent it from falling off and causing sealing failure.

[0033] The working principle of this embodiment is as follows: In this embodiment, the rolling bearing 00 is placed in the bearing chamber 1, and the positioning plug 14 is used to abut and fix the rolling bearing 00. When the rolling bearing 00 rotates, the grease will gradually fill the gap between the auger shaft 02 and the inner wall of the bearing chamber 1. The upper and lower sealing rings of the bearing chamber 1 are respectively restricted and fixed, and the sealing will not fail due to the sealing ring falling off.

[0034] In this embodiment, the split bearing housing is installed on the tailstock of the auger drive end. After the auger shaft 02 extends out of the split bearing housing, the extended end is connected to the drive device.

[0035] Example 2: See Figure 4-12 A dustproof sealing tail plate that mates with the dustproof and sealing split bearing housing described in Embodiment 1 includes a disc-shaped bearing mounting base 2; the split bearing housing is correspondingly mounted on the bearing mounting base 2; a flange B 21 is coaxially provided on the bottom surface of the bearing mounting base 2; the flange B 21 is connected to the auger cylinder 01. The bearing mounting base 2 is provided with a central hole 22, which corresponds to the through hole 143 of the positioning plug body 14; the top surface of the bearing mounting base 2 is provided with a number of strip-shaped protrusions 23, which are all arranged radially along the bearing mounting base 2; the number of strip-shaped protrusions 23 are evenly distributed around the circumference of the central hole 22; there are four strip-shaped protrusions 23.

[0036] A threaded blind hole 231 is provided on the top surface of the strip-shaped protrusion 23 away from the central hole 22; this threaded blind hole 231 corresponds to the flange A 11; providing multiple strip-shaped protrusions 23 can support the split bearing housing, and at the same time increase the depth of the threaded blind hole 231, increasing the connection strength between the tail plate and the split bearing housing. The threaded blind hole 231 corresponds one-to-one with the bolt hole on the flange A 11; after the bolt passes through the bolt hole, it is threaded into the threaded blind hole 231.

[0037] The other end of the strip-shaped protrusion 23 is aligned with the edge of the central hole 22; the bottom surface of the sealing ring B 16 is in contact with the top surface of the strip-shaped protrusion 23. The ends of several strip-shaped protrusions 23 can serve as multiple annularly distributed support surfaces, which can support the bottom of the sealing ring B 16 and prevent the sealing ring B 16 from falling off.

[0038] An arc-shaped plate 232 is provided at the end of the strip-shaped protrusion 23 away from the central hole 22. The arc-shaped plate 232 protrudes upward; the inner side of the arc-shaped plate 232 fits against the side of the flange A 11. The arc-shaped plate 232 can limit the position of the split bearing housing, which facilitates the installation of the split bearing housing.

[0039] The bottom of flange B21 is provided with a circular recess B212, and a sealing ring C24 is coaxially arranged inside the circular recess B212; the outer side of the sealing ring C24 fits against the inner side of the circular recess B212; the inner diameter of the sealing ring C24 matches the inner diameter of the auger cylinder 01; the sealing ring C24 between flange B21 and auger cylinder 01 can increase the overall sealing performance of the equipment.

[0040] The depth of the circular recess B212 is 1 / 2 to 2 / 3 of the thickness of the sealing ring C24. A corresponding circular recess C012 is provided on the auger cylinder 01, and the bottom surface of the sealing ring C24 abuts against the bottom surface of the circular recess C012. The position of the sealing ring C24 is offset from the connection surface of the auger cylinder 01 and the flange B21, which further improves the sealing performance of the auger cylinder 01 at the connection point.

[0041] The bottom surface of the dustproof and sealed tail plate is provided with an annular groove 25, which is coaxial with the center hole 22; a pressure cap 3 is correspondingly sleeved on the auger shaft 02; The pressure cap 3 is disc-shaped, and its diameter matches the annular groove 25. An annular protrusion 31 is provided on the edge of the pressure cap 3, and the wall thickness and height of the annular protrusion 31 match the width and depth of the annular groove 25, respectively. The annular protrusion 31 is correspondingly positioned within the annular groove 25. A sleeve 32 is provided at the center of the pressure cap 3, which is fitted onto the outside of the auger shaft 02 and secured with fasteners. The pressure cap 3, facing the annular groove 25, prevents powdery materials inside the auger cylinder 01 from entering the tail disc, improving sealing performance. Furthermore, when the auger shaft 02 rotates, the pressure plate rotates along with it, thereby moving the material at the inner end of the auger cylinder 01, providing a stirring effect and preventing the material from accumulating at the end of the auger cylinder 01 for an extended period, thus preventing material deterioration.

[0042] Example 3: Example 3 is basically the same as Example 2, and the similarities will not be repeated. The difference is that: a flange C 011 is provided at the end of the auger cylinder 01, and flange B 21 is correspondingly connected to flange C 011; several circular holes are evenly distributed around the circumference of flange B 21; bolts are installed in each of the circular holes; several threaded through holes 211 are also provided on flange B 21; the several threaded through holes 211 are evenly distributed around the circumference; the threaded through holes 211 are all located between the circular holes of flange B 21; a set screw is correspondingly installed in the threaded through hole 211; the end of the set screw abuts against the solid part of flange B 21. When disassembling the tail plate and the split bearing seat, the set screw in the threaded through hole 211 can be used to push against the end of the auger cylinder 01, thereby allowing the tail plate and the split bearing seat to be pushed out together, facilitating disassembly.

[0043] The inner diameter of the threaded blind hole 231 is smaller than the inner diameter of the round hole.

[0044] Example 4: See Figure 13 Example 4 is basically the same as Example 3, and the similarities will not be repeated. The difference is that: an annular limiting ring 26 is provided in the middle of the bottom surface of flange B 21, and the limiting ring 26 is concentrically arranged with flange B 21; an annular limiting groove is correspondingly provided on flange C 011; the limiting ring 26 is correspondingly arranged in the annular limiting groove. This allows the tail plate and the auger cylinder 01 to directly establish a concentric fit when installing the tail plate, which is convenient for installation, and at the same time, it can ensure that the installed tail plate and the auger cylinder 01 maintain a good concentric fit.

[0045] Example 5: See Figure 14-16 Example 5 is basically the same as Example 1, and the similarities will not be repeated. The difference is that the split bearing seat in this example is set on the tail plate of the auger cylinder 01 away from the drive end, and cooperates with the auger shaft 02 on that side.

[0046] The split bearing housing is provided with an end plate 18, which blocks the bearing mounting hole 13 to form a blind hole. The bottom surface of the end plate 18 is connected to the top surface of the abutment ring 131. The split bearing housing is no longer provided with a sealing ring 15 and a retaining ring 17.

[0047] A sealed split bearing housing is installed at the non-extended end of the auger shaft 02, which provides better dustproof and pressure-resistant performance.

Claims

1. A dustproof and sealed split bearing housing, wherein a rolling bearing is installed inside, mounted on the auger tailstock, and mates with the auger shaft; characterized in that, It includes a bearing housing and a positioning plug; the bearing housing is frustum-shaped, with a flange A coaxially connected to its bottom; the bearing housing has a vertical bearing mounting hole; the bearing mounting hole is circular, coaxially arranged with the bearing housing, and its diameter matches the outer diameter of the rolling bearing; a protruding abutment ring is provided on the upper part of the inner wall of the bearing mounting hole, the inner diameter of which is larger than the diameter of the auger shaft; a sealing ring A is provided on the top of the abutment ring; The locating plug is cylindrical, and its outer diameter matches the diameter of the bearing mounting hole. The locating plug is inserted into the bearing mounting hole from the bottom of the bearing chamber, and the bottom surface of the locating plug is flush with the bottom surface of the bearing chamber. A gap is left between the top surface of the locating plug and the bottom surface of the abutment ring. The rolling bearing is installed within the clearance; the height of the rolling bearing matches the clearance.

2. The dustproof and sealed split bearing housing according to claim 1, characterized in that: The bottom surface of the positioning plug is concentrically provided with a limiting disk, the diameter of which is larger than that of the positioning plug; the bottom surface of the bearing chamber is correspondingly provided with a locking recess, and the limiting disk is located in the locking recess.

3. The dustproof and sealed split bearing housing according to claim 1, characterized in that: The positioning plug is provided with a vertical through hole, which is coaxial with the positioning plug; the diameter of the through hole is larger than the diameter of the auger shaft; the auger shaft passes through the through hole and cooperates with the rolling bearing.

4. The dustproof and sealed split bearing housing according to claim 3, characterized in that: The center of the positioning plug is provided with a circular recess A, and a sealing ring B is correspondingly provided inside the circular recess A; the outer side of the sealing ring B fits against the side of the circular recess A; the inner diameters of the sealing ring A and the sealing ring B are the same, and both match the diameter of the auger shaft.

5. The dustproof and sealed split bearing housing according to claim 1, characterized in that: A horizontal circular groove is concentrically arranged inside the bearing mounting hole, and a retaining spring is correspondingly arranged inside the circular groove; the retaining spring is arranged on the upper part of the sealing ring, and the sealing ring abuts against the retaining spring.

6. A dustproof sealing tail plate that mates with the dustproof sealing split bearing housing as described in claim 4, characterized in that: Includes a disc-shaped bearing mounting base; a split bearing housing is correspondingly mounted on the bearing mounting base; a flange B is coaxially provided on the bottom surface of the bearing mounting base; flange B is connected to the auger cylinder; The bearing mounting base is provided with a central hole, which corresponds to the through hole of the positioning plug; the top surface of the bearing mounting base is provided with several strip-shaped protrusions, which are all arranged along the radial direction of the bearing mounting base; the several strip-shaped protrusions are evenly distributed around the circumference of the central hole; A threaded blind hole is provided on the top surface of the strip-shaped protrusion away from the central hole; the threaded blind hole corresponds to flange A; the other end of the strip-shaped protrusion is aligned with the edge of the central hole; The bottom surface of sealing ring B is in contact with the top surface of the strip-shaped protrusion.

7. The dustproof and sealing tailstock disc according to claim 6, characterized in that: An arc-shaped plate is provided at the end of the strip-shaped protrusion away from the central hole, and the arc-shaped plate protrudes upward; the inner side of the arc-shaped plate is in contact with the side of the flange.

8. The dustproof and sealed tailstock disc according to claim 6, characterized in that: The bottom of the flange B is provided with a circular recess B, and a sealing ring C is coaxially arranged inside the circular recess B; the outer side of the sealing ring C fits against the inner side of the circular recess B; the inner diameter of the sealing ring C matches the inner diameter of the auger cylinder. The depth of the circular recess B is 1 / 2 to 2 / 3 of the thickness of the sealing ring C; the auger cylinder is provided with a circular recess C corresponding to the circular recess B, and the bottom surface of the sealing ring C abuts against the bottom surface of the circular recess C.

9. The dustproof and sealing tailstock disc according to claim 6, characterized in that: The bottom surface of the dustproof sealing tail plate is provided with an annular groove, which is coaxial with the center hole; a pressure cap is correspondingly sleeved on the auger shaft; The cap is disc-shaped, and its diameter matches the annular groove. The edge of the cap is provided with annular protrusions, the wall thickness and height of which match the width and depth of the annular groove, respectively. The annular protrusions are correspondingly located within the annular groove.

10. The dustproof and sealing tailstock disc according to claim 6, characterized in that: Flange C is provided at the end of the auger cylinder, and flange B is connected to flange C accordingly; several circular holes are evenly distributed around the circumference of flange B; bolts are installed in each of the circular holes; several threaded through holes are also provided on flange B; the several threaded through holes are evenly distributed around the circumference; the threaded through holes are all located between the circular holes of flange B; set screws are correspondingly installed in the threaded through holes.

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