A sealing bearing housing for a coal unloader spiral body
By designing the fixing components and ash-blocking components of the spiral seal bearing seat of the coal unloader, and using the fan plate to form an airflow to blow away the coal ash, the problem of coal dust entering due to unreasonable bearing seat sealing was solved, and the stable operation of the bearing and transmission components was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN HUADIAN ZHANGPING COAL FIRED POWER COMPANYLIMITED
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-30
AI Technical Summary
The improper sealing design of the bearing housing of the train screw unloader allows coal dust and debris to enter the bearing, increasing friction, affecting the normal operation of the bearing and transmission components, and even causing breakage.
A spiral sealing bearing housing for a coal unloader is designed, comprising a fixed component, an ash-blocking component, and a rotating component. The ash-blocking component generates airflow through its fan plate to blow away coal ash, preventing it from entering the bearing housing. Combined with an inclined air inlet and a filter column, coal ash blockage is reduced.
It effectively prevents coal ash from entering the bearing housing, reduces friction, ensures the normal operation of the coal unloader, and avoids uneven stress and damage to transmission components.
Smart Images
Figure CN224433169U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing housing technology, and in particular to a sealing bearing housing for a coal unloader spiral body. Background Technology
[0002] During the unloading process of a train screw unloader, due to the unreasonable sealing design of the bearing seats on both sides of the screw and the excessive sealing gap between the outer cover of the bearing seat and the rotating inner cover, a certain amount of dust is generated during unloading. As the inner cover rotates, coal dust and debris enter the bearing seat, causing a large accumulation of coal and debris inside the bearing. This greatly increases the friction between the two bearings during rotation. This friction not only acts on the bearings themselves but also travels along the small chains of arms A and B, the nylon pins of the coupling, and the screw fixing bolts. This forces these rotating and fixed parts to overcome additional resistance during operation, resulting in uneven force distribution during transmission. The tension and torque they bear far exceed the design limits, and prolonged operation will cause the small chains of arms A and B, the nylon pins of the coupling, and the screw fixing bolts to break. Therefore, a new type of sealed bearing seat for the screw of a coal unloader is proposed to solve the above problems. Utility Model Content
[0003] The purpose of this utility model is to provide a sealed bearing housing for the spiral body of a coal unloader, which aims to solve the problem that unreasonable sealing design of the bearing housings on both sides of the spiral body leads to coal dust entering the bearing housing during rotation and affecting the rotation of the bearing housing.
[0004] This utility model proposes the following technical solution: a sealing bearing seat for a coal unloader's spiral body, comprising a fixing assembly including a bearing seat and a fixing flange disposed on the surface of the bearing seat; and,
[0005] The dust-blocking assembly includes an upper dust-blocking ring, a lower dust-blocking ring connected to the upper dust-blocking ring, air inlets disposed on the surfaces of the upper and lower dust-blocking rings, a filter column disposed inside the air inlets, and a fan plate disposed inside the upper dust-blocking ring; and,
[0006] The rotating assembly includes a rotating seat, a rotating flange disposed at one end of the rotating seat, an inner cover disposed on the surface of the rotating seat, and an insert ring disposed on the surface of the inner cover.
[0007] In a preferred embodiment of the spiral sealing bearing seat of the coal unloader of this utility model: the inner surfaces of the upper and lower ash blocking rings are fixed with wrapping plates.
[0008] In a preferred embodiment of the spiral sealing bearing seat of the coal unloader of this utility model: the surface of the inner cover is provided with a connecting groove, and the inner surfaces of the upper ash baffle ring and the lower ash baffle ring are provided with inserts, which are engaged with the connecting groove.
[0009] In a preferred embodiment of the spiral sealing bearing seat of the coal unloader of this utility model: an upper fixing plate is fixed on both sides of the upper ash baffle ring, a lower fixing plate is fixed on both sides of the lower ash baffle ring, and fixing bolts are connected to the surfaces of the lower fixing plate and the upper fixing plate.
[0010] In a preferred embodiment of the spiral sealing bearing seat of the coal unloader of this utility model: an elastic pad is provided between the lower fixed plate and the upper fixed plate.
[0011] In a preferred embodiment of the spiral seal bearing seat of the coal unloader of this utility model: the fan plate is inclined relative to the upper ash baffle ring, and one end of the fan plate is a pointed tip.
[0012] In a preferred embodiment of the spiral sealing bearing seat of the coal unloader of this utility model, the air inlet and the upper ash retaining ring are inclined.
[0013] In a preferred embodiment of the spiral sealing bearing housing for the coal unloader of this utility model, a guide ring is provided on the surface of the bearing housing.
[0014] In a preferred embodiment of the spiral sealing bearing seat of the coal unloader of this utility model: the surface of the guide ring is provided with a nut groove.
[0015] In a preferred embodiment of the spiral sealing bearing seat of the coal unloader of this utility model: a connecting ring is fixed at one end of the bearing seat, and the embedded ring is rotatably connected to the bearing seat.
[0016] The beneficial effects of this utility model are as follows: the rotating component drives the ash-blocking component to rotate, and the rotating ash-blocking component forms an airflow through the internal fan plate, blowing the gas outward to blow away the coal ash. At the same time, the inclined air inlet reduces the direct impact of the gas carrying coal ash on the surface of the filter column, preventing the filter column from being blocked by coal ash, thus forming an effective air duct, preventing coal ash from entering the bearing seat, and ensuring the normal operation of the coal unloader. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:
[0018] Figure 1 This is a schematic diagram of the main structure of this utility model.
[0019] Figure 2 This is a side view of the present invention.
[0020] Figure 3This is a schematic diagram of the structure of the fixed component and the rotating component in this utility model.
[0021] Figure 4 This is a schematic diagram of the structure of the lower dust-blocking ring in this utility model.
[0022] Figure 5 This is a schematic diagram of the upper dust-blocking ring in this utility model.
[0023] Figure 6 This is a cross-sectional view of the upper dust-blocking ring in this utility model. Detailed Implementation
[0024] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0025] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.
[0026] Example 1, referring to Figures 1-6 This embodiment provides a sealing bearing housing for a coal unloader's spiral body, comprising:
[0027] The fixing assembly 1 includes a bearing housing 11 and a fixing flange 12 disposed on the surface of the bearing housing 11; and,
[0028] The dust-blocking assembly 2 includes an upper dust-blocking ring 21, a lower dust-blocking ring 22 connected to the upper dust-blocking ring 21, air inlets 23 disposed on the surfaces of the upper dust-blocking ring 21 and the lower dust-blocking ring 22, a filter column 24 disposed inside the air inlets 23, and a fan plate 25 disposed inside the upper dust-blocking ring 21; and,
[0029] The rotating assembly 3 includes a rotating seat 31, a rotating flange 32 disposed at one end of the rotating seat 31, an inner cover 33 disposed on the surface of the rotating seat 31, and an insert ring 34 disposed on the surface of the inner cover 33.
[0030] The upper ash baffle ring 21 and the lower ash baffle ring 22 can rotate with the inner cover 33. The rotating upper ash baffle ring 21 and the lower ash baffle ring 22 generate airflow through the internal fan plate 25, thereby changing the gas flow near the upper ash baffle ring 21 and the lower ash baffle ring 22, blowing away the coal ash and preventing the coal ash from entering between the inner cover 33 and the bearing seat 11.
[0031] Operating Procedure: The bearing housing 11 is fixed to the boom of the coal unloader via the fixed flange 12. The rotating seat 31 is connected to the screw of the coal unloader via the rotating flange 32. When the coal unloader is running normally, the screw drives the rotating seat 31 to rotate via the rotating flange 32. The bearing housing 11, fixed to the boom, does not rotate. The embedded ring 34 rotates relative to the bearing housing 11. Due to the exposed embedded ring 34 between the inner cover 33 and the bearing housing 11, coal ash can easily enter the interior, causing blockage. The upper ash-blocking ring 21 and the lower ash-blocking ring 22 are connected to the surface of the inner cover 33. The rotating seat 31 drives the inner cover 33 to rotate, and the rotation of the inner cover 33 drives the upper ash-blocking ring 21 and the lower ash-blocking ring 22 to rotate. When the upper and lower ash rings 21 and 22 rotate, the fan plate 25 is tilted, causing the airflow to be disturbed outward, which in turn causes the air inside the upper and lower ash rings 21 and 22 to be discharged. A negative pressure is formed inside the upper and lower ash rings 21 and 22, so the external gas enters the upper and lower ash rings 21 and 22 after being filtered by the filter column 24 through the air inlet 23. When the upper and lower ash rings 21 and 22 rotate, the outward airflow blows onto the surface of the fixed flange 12, thereby blowing away the coal ash and preventing the coal ash from entering between the inner cover 33 and the bearing seat 11.
[0032] Example 2, refer to Figures 1-6 This is the second embodiment of the present invention, which differs from the previous embodiment in that it also includes,
[0033] The inner surfaces of the upper ash-blocking ring 21 and the lower ash-blocking ring 22 are fixed with wrapping plates 26; the wrapping plates 26 can fit against the surface of the bearing seat 11, blocking the embedded ring 34 exposed between the inner cover 33 and the bearing seat 11, and preventing coal ash from entering.
[0034] The fan plate 25 is inclined relative to the upper ash baffle ring 21, and one end of the fan plate 25 is a pointed tip. The fan plate 25 rotates with the upper ash baffle ring 21 and the lower ash baffle ring 22. The inclined fan plate 25 can exhaust the air inside the upper ash baffle ring 21 and the lower ash baffle ring 22, thereby forming a gas circulation channel.
[0035] The air inlet 23 and the upper baffle ring 21 are inclined. When the upper baffle ring 21 and the lower baffle ring 22 rotate, the direction of the airflow contact with the filter column 24 is perpendicular to the direction of the air inlet 23. This allows most of the gas to flow away along the surface of the upper baffle ring 21 and the lower baffle ring 22, while a small portion of the gas enters the interior of the upper baffle ring 21 and the lower baffle ring 22. This prevents the gas carrying coal ash from directly impacting the surface of the filter column 24, which would cause the filter column 24 to become clogged quickly.
[0036] The surface of the bearing housing 11 is provided with a guide ring 13; the guide ring 13 is inclined on the side facing the upper ash-blocking ring 21 and the lower ash-blocking ring 22. When the fan plate 25 rotates, it generates an outward airflow that blows onto the surface of the fixed flange 12. The airflow blows onto the surface of the guide ring 13 and diffuses outward along the guide ring 13, thereby blowing away the coal ash.
[0037] The surface of the guide ring 13 is provided with a nut groove 14; the nut groove 14 is provided corresponding to the mounting hole on the surface of the fixed flange 12, so that a nut can be placed, thereby enabling the fixed flange 12 to be properly connected with bolts.
[0038] A connecting ring 15 is fixed to one end of the bearing housing 11, and an embedded ring 34 is rotatably connected to the bearing housing 11. The connecting ring 15 can be inserted into the inside of the unloader boom to ensure the stability of the bearing housing 11, and the embedded ring 34 is inserted into the inside of the bearing housing 11 to ensure the stable rotation of the rotating seat 31.
[0039] Usage: Insert the connecting ring 15 into the unloader boom, place the nut in the nut groove 14, and connect it with the nut in the nut groove 14 using bolts, thereby fixing the flange 12 to the unloader boom. The rotating seat 31 is connected to the unloader screw via the rotating flange 32. When the unloader is running normally, the screw drives the rotating seat 31 to rotate via the rotating flange 32. The bearing seat 11 is fixed on the boom and does not rotate. The embedded ring 34 rotates relative to the bearing seat 11. Due to the distance between the inner cover 33 and the bearing seat 11... The exposed embedded ring 34 allows coal ash to easily enter and cause blockage. The upper and lower ash-blocking rings 21 and 22 are connected to the surface of the inner cover 33. The rotating seat 31 drives the inner cover 33 to rotate, which in turn drives the upper and lower ash-blocking rings 21 and 22 to rotate. The openings of the upper and lower ash-blocking rings 21 and 22 face the fixed flange 12. When the upper and lower ash-blocking rings 21 and 22 rotate, due to the inclined arrangement of the fan plate 25, the fan plate 25 will disturb the airflow outward when it rotates, making the air inside the upper and lower ash-blocking rings 21 and 22 more airy. As the air is discharged, a negative pressure is created inside the upper and lower baffle rings 21 and 22. External air, filtered by the filter column 24 through the air inlet 23, then enters the upper and lower baffle rings 21 and 22. Because the air inlet 23 is inclined relative to the upper and lower baffle rings 21 and 22, when the upper and lower baffle rings 21 and 22 rotate, the direction of airflow contact with the filter column 24 is perpendicular to the direction of the air inlet 23. This causes most of the air to flow away along the surfaces of the upper and lower baffle rings 21 and 22, while a small portion of the air enters the upper and lower baffle rings 21 and 22. Inside the lower ash-blocking ring 22, gas carrying coal ash is prevented from directly impacting the surface of the filter column 24, causing the filter column 24 to become clogged quickly. When the upper ash-blocking ring 21 and the lower ash-blocking ring 22 rotate, they generate an outward airflow that blows onto the surface of the fixed flange 12. The airflow blows onto the surface of the guide ring 13 and diffuses outward along the guide ring 13, thereby blowing away the coal ash. At the same time, the wrapping plate 26 covers the connection between the inner cover 33 and the bearing seat 11. The wrapping plate 26 rotates with the upper ash-blocking ring 21 and the lower ash-blocking ring 22 to prevent coal ash from entering between the inner cover 33 and the bearing seat 11.
[0040] Example 3, referring to Figures 1-6 This is the third embodiment of the present invention, which differs from the previous embodiment in that it also includes,
[0041] The inner cover 33 has a connecting groove 35 on its surface. The inner surfaces of the upper dust-blocking ring 21 and the lower dust-blocking ring 22 are each provided with a block 27, which engages with the connecting groove 35. The connecting groove 35 and the block 27 allow the upper dust-blocking ring 21 and the lower dust-blocking ring 22 to be removed, facilitating cleaning of their interiors. The connecting groove 35 has a protrusion, and the surface of the block 27 has a corresponding groove. The groove on the surface of the block 27 aligns with the protrusion on the surface of the connecting groove 35, so that when the inner cover 33 rotates, it can stably drive the upper dust-blocking ring 21 and the lower dust-blocking ring 22 to rotate, preventing relative rotation between the inner cover 33 and the upper dust-blocking ring 21 and the lower dust-blocking ring 22.
[0042] Upper fixing plates 29 are fixed on both sides of the upper ash blocking ring 21, and lower fixing plates 28 are fixed on both sides of the lower ash blocking ring 22. Fixing bolts 30 are connected to the surfaces of the lower fixing plates 28 and the upper fixing plates 29. The upper fixing plates and the lower fixing plates 28 are connected by fixing bolts 30, which facilitates the removal of the upper ash blocking ring 21 and the lower ash blocking ring 22. The upper ash blocking ring 21 and the lower ash blocking ring 22 can be separated from each other and removed from the surface of the inner cover 33.
[0043] An elastic pad is provided between the lower fixing plate 28 and the upper fixing plate 29. The elastic pad is located between the lower fixing plate 28 and the upper fixing plate 29. By adjusting the tightening force of the fixing bolt 30, it can be determined whether the upper ash blocking ring 21 and the lower ash blocking ring 22 are fixed stably.
[0044] Usage: Insert the connecting ring 15 into the boom of the coal unloader, place the nut in the nut groove 14, and connect it with the nut in the nut groove 14 using bolts, thereby fixing the flange 12 to the boom of the coal unloader. The rotating seat 31 is connected to the screw of the coal unloader through the rotating flange 32. When the coal unloader is running normally, the screw drives the rotating seat 31 to rotate through the rotating flange 32. The bearing seat 11 is fixed on the boom and does not rotate. The embedded ring 34 rotates relative to the bearing seat 11. Because the embedded ring 34 is exposed between the inner cover 33 and the bearing seat 11, coal ash can easily enter the interior and cause blockage. The upper ash-blocking ring 21 and the lower ash-blocking ring 22 are connected. On the surface of the inner cover 33, the rotating seat 31 drives the inner cover 33 to rotate, and the rotation of the inner cover 33 drives the upper baffle ring 21 and the lower baffle ring 22 to rotate. The openings of the upper baffle ring 21 and the lower baffle ring 22 face the fixed flange 12. When the upper baffle ring 21 and the lower baffle ring 22 rotate, due to the inclined setting of the fan plate 25, the fan plate 25 will disturb the airflow outward when it rotates, causing the air inside the upper baffle ring 21 and the lower baffle ring 22 to be discharged. A negative pressure is formed inside the upper baffle ring 21 and the lower baffle ring 22, so the external gas enters the upper baffle ring 21 and the lower baffle ring 22 after being filtered by the filter column 24 in the air inlet 23. Since the air inlet 23 is relative to the upper baffle ring 21, With the lower baffle ring 22 inclined, when the upper baffle ring 21 and the lower baffle ring 22 rotate, the direction of the airflow contacting the filter column 24 is perpendicular to the direction of the air inlet 23. This allows most of the gas to flow away along the surface of the upper baffle ring 21 and the lower baffle ring 22, while a small portion of the gas enters the interior of the upper baffle ring 21 and the lower baffle ring 22. This prevents the gas carrying coal ash from directly impacting the surface of the filter column 24, causing rapid blockage of the filter column 24. When the upper baffle ring 21 and the lower baffle ring 22 rotate, they generate an outward airflow that blows towards the surface of the fixed flange 12. The airflow then reaches the surface of the guide ring 13 and diffuses outward along the guide ring 13, thereby blowing away the coal ash. At the same time, the wrapping plate 26 covers the surface. At the connection between the inner cover 33 and the bearing seat 11, the wrapping plate 26 rotates with the upper ash-blocking ring 21 and the lower ash-blocking ring 22 to prevent coal ash from entering between the inner cover 33 and the bearing seat 11. When the filter column 24 becomes clogged after long-term use, the upper ash-blocking ring 21 and the lower ash-blocking ring 22 can be removed by removing the fixing bolts 30, thus facilitating the cleaning of the filter column 24. When installation is required, align the grooves on the surface of the insert 27 of the upper ash-blocking ring 21 and the lower ash-blocking ring 22 with the protrusions on the surface of the connecting groove 35, place the upper ash-blocking ring 21 and the lower ash-blocking ring 22 in the connecting groove 35, and then fix the upper ash-blocking ring 21 and the lower ash-blocking ring 22 with the fixing bolts 30.
[0045] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.
Claims
1. A coal unloader screw body seal bearing block characterized by: include, The fixing assembly (1) includes a bearing housing (11) and a fixing flange (12) disposed on the surface of the bearing housing (11); as well as, The dust-blocking assembly (2) includes an upper dust-blocking ring (21), a lower dust-blocking ring (22) connected to the upper dust-blocking ring (21), an air inlet (23) disposed on the surfaces of the upper dust-blocking ring (21) and the lower dust-blocking ring (22), a filter column (24) disposed inside the air inlet (23), and a fan plate (25) disposed inside the upper dust-blocking ring (21); and, The rotating assembly (3) includes a rotating seat (31), a rotating flange (32) disposed at one end of the rotating seat (31), an inner cover (33) disposed on the surface of the rotating seat (31), and an insert ring (34) disposed on the surface of the inner cover (33).
2. The coal unloader screw body seal bearing block of claim 1 wherein: The inner surfaces of the upper ash-blocking ring (21) and the lower ash-blocking ring (22) are fixed with wrapping plates (26).
3. The sealing bearing housing for the unloading machine spiral as described in claim 2, characterized in that: The inner cover (33) has a connecting groove (35) on its surface. The inner surfaces of the upper dust-blocking ring (21) and the lower dust-blocking ring (22) are each provided with a block (27), which engages with the connecting groove (35).
4. The sealing bearing housing for the unloading machine spiral as described in claim 3, characterized in that: The upper ash-blocking ring (21) is fixed with an upper fixing plate (29) on both sides, and the lower ash-blocking ring (22) is fixed with a lower fixing plate (28) on both sides. The surfaces of the lower fixing plate (28) and the upper fixing plate (29) are connected with fixing bolts (30).
5. The sealing bearing housing for the unloading machine spiral body as described in claim 4, characterized in that: An elastic pad is provided between the lower fixing plate (28) and the upper fixing plate (29).
6. The sealing bearing housing for the unloading machine spiral body as described in claim 5, characterized in that: The fan plate (25) is inclined relative to the upper dust-blocking ring (21), and one end of the fan plate (25) is a pointed tip.
7. The sealing bearing housing for the unloading machine spiral body as described in claim 6, characterized in that: The air inlet (23) and the upper dust baffle (21) are set at an angle.
8. The sealing bearing housing for the unloading machine spiral body as described in claim 7, characterized in that: The surface of the bearing housing (11) is provided with a guide ring (13).
9. The sealing bearing housing for the unloading machine spiral body as described in claim 8, characterized in that: The surface of the guide ring (13) is provided with a nut groove (14).
10. The sealing bearing housing for the unloading machine spiral body as described in claim 9, characterized in that: A connecting ring (15) is fixed to one end of the bearing seat (11), and the embedded ring (34) is rotatably connected to the bearing seat (11).