Impeller coal feeder based on output shaft sealing
A multi-layered protection system for the output shaft of leaf wheel coal feeders prevents foreign objects from entering the gearbox, addressing the issue of frequent damage and maintenance, thereby extending the feeder's operational life and reducing costs.
Patent Information
- Application Number
- CN202421727414.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-19
AI Technical Summary
During the discharging process of existing impeller coal feeders, debris are easily wound on the output shaft of the bevel gear box, resulting in damage to the gear box and increasing the frequency of maintenance and cost.
The design based on the output shaft seal is adopted, including a sealing sleeve, an anti-winding ring and a shielding member. Through the sealing sleeve and the bearing cap, the anti-winding ring forms a protection on the outside of the sealing sleeve to prevent debris from winding and enhance the sealing effect.
Effectively prevent fine particulate materials from entering the bevel gearbox, reduce equipment damage, extend service cycle, and reduce maintenance frequency and cost.
Smart Images
Figure CN223102163U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of impeller coal feeders, and particularly relates to an impeller coal feeder based on output shaft sealing. Background Art
[0002] The impeller coal feeder is an essential main device in the gap coal bunker of thermal power plants. It can travel along the longitudinal axis of the coal bunker or stop at a place to quantitatively and evenly continuously dial coal onto the coal conveyor. The impeller coal feeder can also be applied in other industries. For example, after imported bauxite ore is unloaded into the slit ore bin by a car dumper, through the horizontal rotation of the impeller claws of the impeller coal feeder, the ore is quantitatively, evenly, and continuously dialed onto the belt conveyor, and then transferred to the ore storage bin.
[0003] During the feeding process of the existing impeller coal feeder, due to the downward extrusion of the impeller claws, sundries (dust suppression nets, cables, straw ropes, etc.) brought into the ore are extremely easy to wind around the output shaft of the bevel gearbox at the lower part of the impeller claw base, resulting in the locking of the gearbox, and the bevel gearbox is easily damaged, seriously affecting the operation cycle of the impeller coal feeder, increasing the spare part cost, and at the same time increasing the workload of maintenance personnel. Currently, conventional sealing rings are used, and the sealing is carried out through the cooperation between the sealing ring and the shaft and the shell. However, this sealing structure has a poor protection effect against fine materials and sundries, resulting in frequent maintenance of the bevel gearbox. Only by cleaning in a timely and regular manner can the above problems be avoided. There is no good solution, and at the same time, the maintenance cost and workload are increased. Summary of the Utility Model
[0004] This application aims to at least solve the technical problem that the impeller coal feeder is easily damaged to a certain extent. Therefore, this application provides an impeller coal feeder based on output shaft sealing, which provides multiple protections for the output shaft of the bevel gearbox, can tightly seal the bearing gland, improve the sealing effect, keep the impeller coal feeder running well, reduce the problems of the impeller coal feeder, and extend the service life of the impeller coal feeder.
[0005] An embodiment of this application provides an impeller coal feeder based on output shaft sealing, which includes:
[0006] An output shaft, extending from the bearing gland and connecting to the impeller claws;
[0007] A sealing sleeve, sleeved on the output shaft and abutted against the bearing gland, and the sealing sleeve seals the gap between the output shaft and the bearing gland;
[0008] An anti-winding ring, placed in the bearing gland, the anti-winding ring is arranged outside the sealing sleeve, and there is a gap between the anti-winding ring and the outer circumference of the sealing sleeve, so that the anti-winding ring can move radially relative to the sealing sleeve on the output shaft. The height of the anti-winding ring is greater than or equal to that of the sealing sleeve to block sundries on the side of the sealing sleeve.
[0009] In an alternative embodiment, the height of the anti-wrapping ring is greater than or equal to twice the height of the sealing sleeve protruding from the bearing gland.
[0010] In an alternative embodiment, it further includes a shielding member sleeved on the output shaft, and there is a first gap between the shielding member and the anti-wrapping ring.
[0011] In an alternative embodiment, the outer diameter of the shielding member is greater than the outer diameter of the anti-wrapping ring.
[0012] In an alternative embodiment, the shielding member includes a dust-proof sleeve and a bottom plate. The dust-proof sleeve is connected to the output shaft in a sleeved manner. There is a first gap between the dust-proof sleeve and the anti-wrapping ring, and the bottom plate is annularly arranged on the outer periphery of the dust-proof sleeve.
[0013] In an alternative embodiment, the outer diameter of the bottom plate is greater than half of the outer diameter of the bevel gear box of the impeller feeder, so that the outer edge of the bottom plate can extend to the edge of the ore bin.
[0014] In an alternative embodiment, there is a second gap between the bottom plate and the impeller claw. The height of the bottom plate is lower than the height of the ore bin, and the height of the impeller claw is higher than the height of the ore bin.
[0015] In an alternative embodiment, the dust-proof sleeve is divided into an upper part and a lower part. The size of the upper part is larger than that of the lower part, and the outer periphery of the lower part is connected to the bottom plate.
[0016] In an alternative embodiment, it further includes a locking member that fixes the sealing sleeve to the output shaft.
[0017] In an alternative embodiment, the bearing gland is connected to the bevel gear box, and the bevel gear box is drivingly connected to a driving device.
[0018] As can be seen from the above technical solutions, the beneficial effects of this application are as follows:
[0019] This application seals between the output shaft and the bearing gland through the sealing sleeve to prevent fine particulate materials from entering the bearing through the bearing gland. Since the bearing is located in the bevel gear box on the impeller feeder, it also prevents fine particulate materials from entering the bevel gear box, thereby avoiding damage to the bearing and the components near the bearing. Through the anti-wrapping ring, a protection is formed outside the sealing sleeve. When sundries are driven by the impeller claw, they first wind around the anti-wrapping ring, thus avoiding direct contact between the sundries and the sealing sleeve and enhancing the blocking and protection effect of the sundries. In the case of a large amount of sundries, after the sundries wind around the anti-wrapping ring, due to the mobility of the anti-wrapping ring, the relative pulling displacement between the anti-wrapping ring and the sundries is increased, which facilitates the detachment of the sundries from the anti-wrapping ring. In this way, this application provides multiple protections for the output shaft of the bevel gear box, can tightly seal the bearing gland, improve the sealing effect, maintain the good operation of the impeller feeder, reduce the problems of the impeller feeder, and extend the service life of the impeller feeder. Description of the Drawings
[0020] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other embodiments and drawings can also be obtained based on these drawings.
[0021] Figure 1 The figure shows an application schematic diagram of an embodiment of an impeller coal feeder based on output shaft sealing of the present utility model;
[0022] Figure 2 The figure shows a partial schematic diagram of an embodiment of an impeller coal feeder based on output shaft sealing of the present utility model;
[0023] Reference numerals: 100, impeller coal feeder; 110, output shaft; 120, sealing sleeve; 121, locking member; 130, anti-entangling ring; 140, shielding member; 141, dust-proof sleeve; 142, bottom plate; 150, bearing gland; 160, impeller claw; 170, bevel gear box; 180, motor; 200, conveyor; 300, ore bin. Detailed implementation manners
[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.
[0025] It should be noted that all directional indications in the embodiments of the present utility model are only used to explain the relative position relationship, movement conditions, etc. between components in a specific posture. If this specific posture changes, the directional indication will also change accordingly.
[0026] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0027] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0028] The present application will be described below with reference to the accompanying drawings and specific embodiments:
[0029] Please refer to Figure 1 , an embodiment of the present application provides an output shaft sealed impeller coal feeder, which includes an output shaft 110, a sealing sleeve 120, and an anti-entangling ring 130. The output shaft 110 extends from the bearing gland 150 and is connected to the impeller claw 160. One end of the output shaft 110 is directly or indirectly connected to the driving device, and the other end of the output shaft 110 is connected to the impeller claw 160. The impeller claw 160 is the material feeding part of the existing impeller coal feeder. When the output end is directly connected to the driving device, the output shaft 110 serves as the output part of the driving device. When indirectly connected, a transmission arrangement such as a belt, a gear, or a combination of multiple methods can be adopted. The transmission between the output shaft 110 and the driving device belongs to conventional technology. The sealing sleeve 120 is connected to the output shaft 110 by sleeving, and the sealing sleeve 120 abuts against the bearing gland 150. The sealing sleeve 120 seals the gap between the output shaft 110 and the bearing gland 150. There is a very small gap between the sealing sleeve 120 and the bearing gland 150, and the gap can be filled with lubricating oil. In this way, when the sealing sleeve 120 rotates with the output shaft 110, the sealing between the sealing sleeve 120 and the bearing gland 150 can be always maintained. The outer diameter of the sealing sleeve 120 is greater than the outer diameter of the output shaft 110, and the outer diameter of the sealing sleeve 120 is less than the outer diameter of the bearing gland 150.
[0030] The anti - entanglement ring 130 is placed on the bearing gland 150. The anti - entanglement ring 130 is of an annular structure. The anti - entanglement ring 130 is arranged outside the sealing sleeve 120, that is, the anti - entanglement ring 130 is placed on the top of the bearing gland 150 and outside the sealing sleeve 120. The outer diameter of the anti - entanglement ring 130 is larger than the outer diameter of the sealing sleeve 120, and there is a gap between the outer periphery of the anti - entanglement ring 130 and the sealing sleeve 120, that is, the inner diameter of the anti - entanglement ring 130 is also larger than the outer diameter of the sealing sleeve 120. This enables the anti - entanglement ring 130 to move radially relative to the sealing sleeve 120 on the output shaft 110. In the horizontal direction, the anti - entanglement ring 130 can move relative to the sealing sleeve 120 to a large extent. The height of the anti - entanglement ring 130 is greater than or equal to that of the sealing sleeve 120 to block sundries on the side of the sealing sleeve 120. In the original device, sundries mainly wound around the output shaft 110 laterally. In this way, the outer position of the sealing sleeve 120 is completely blocked by the anti - entanglement ring 130, and a certain position above the sealing sleeve 120 is also blocked, so that sundries can be effectively prevented from winding around the sealing sleeve 120.
[0031] During the working process of the existing impeller coal feeder, mineral sundries are extremely likely to wind around the output shaft 110 of the bevel gearbox 170 at the lower part of the base of the impeller claw 160, causing the gearbox to lock up and the bevel gearbox 170 to be easily damaged. This is because the sundries carry fine - grained minerals. The fine - grained minerals stay on the output shaft 110 and are likely to enter the bevel gearbox 170 when the output shaft 110 rotates. The fine - grained minerals enter the gaps or crevices between the components in the bevel gearbox 170, causing bearing collapse, gear wear, and even gearbox explosion. In this application, the output shaft 110 and the bearing gland 150 are sealed by the sealing sleeve 120 to prevent fine - grained materials from entering the bearing through the bearing gland 150. Since the bearing is located in the bevel gearbox 170 on the impeller coal feeder 100, it also prevents fine - grained materials from entering the bevel gearbox 170, thus avoiding damage to the bearing and the components near the bearing. Through the anti - entanglement ring 130, a protection is formed outside the sealing sleeve 120. When the sundries are driven by the impeller claw 160, they first wind around the anti - entanglement ring 130, which avoids the direct contact between the sundries and the sealing sleeve 120 and enhances the effect of blocking and protecting the sundries. In the case of a large amount of sundries, after the sundries wind around the anti - entanglement ring 130, due to the mobility of the anti - entanglement ring 130, the relative pulling displacement between the anti - entanglement ring 130 and the sundries is increased, and it is convenient to detach the sundries from the anti - entanglement ring 130. In this way, this application provides multiple protections for the output shaft 110 of the bevel gearbox 170, can tightly seal the bearing gland 150, improve the sealing effect, keep the impeller coal feeder 100 running well, reduce the problems of the impeller coal feeder 100, and extend the service life of the impeller coal feeder 100. This application has been successfully applied in the bauxite conveying system of our company, providing a reference for other mining enterprises and coal - fired power generation enterprises using the impeller coal feeder 100. It has universality. This application is simple to install, use and convenient for maintenance, has no risk, and can be popularized and used in similar systems.
[0032] In an alternative embodiment, the height of the anti-tangling ring 130 is greater than or equal to twice the height of the sealing sleeve 120 protruding from the bearing gland 150. As shown in the figure, the height of the anti-tangling ring 130 is equal to twice the height of the sealing sleeve 120. This can increase the protective height of the anti-tangling ring 130, more effectively protect the sealing sleeve 120, and more debris can accumulate on the outer periphery of the anti-tangling ring 130. There is a gap between the anti-tangling ring 130 and the impeller claw 160. When the impeller claw 160 feeds materials, debris can enter the side of the output shaft 110 but will be blocked by the anti-tangling ring 130, and the debris accumulates on the outer periphery of the anti-tangling ring 130.
[0033] In an alternative embodiment, the impeller feeder 100 further includes a shielding member 140. The shielding member 140 has a relatively large size and range and can block the falling debris. The shielding member 140 is sleeved on the output shaft 110. There is a spacing between the shielding member 140 and the impeller claw 160, and there is a first gap between the shielding member 140 and the anti-tangling ring 130. The shielding member 140 is fixed to the output shaft 110 and can rotate with the rotation of the output shaft 110. The shielding member 140 can be used in cooperation with the anti-tangling ring 130 and the sealing sleeve 120 to form multiple seals. First, the shielding member 140 can perform primary dust prevention on the debris, then the anti-tangling ring 130 can perform secondary dust prevention on the debris, and finally the sealing sleeve 120 can perform tertiary dust prevention on the debris. This can effectively block the debris outside the output shaft 110 and prevent it from contacting the output shaft 110. After adopting this embodiment, the maintenance period of the bevel gearbox 170 of the impeller feeder 100 is extended from 3 months to 18 months, the spare part cost is reduced, and the workload of the maintenance personnel is greatly reduced.
[0034] Please refer to Figure 2 , in an alternative embodiment, the outer diameter of the shielding member 140 is greater than the outer diameter of the anti-tangling ring 130. The outer diameter of the shielding member 140 is relatively large and can cover the range of the anti-tangling ring 130. In this way, the shielding member 140 can better block the debris outside the anti-tangling ring 130. In an alternative embodiment, the shielding member 140 includes a dust-proof sleeve 141 and a bottom plate 142. The dust-proof sleeve 141 is connected to the output shaft 110 in a sleeved manner. The dust-proof sleeve 141 is annular and can be made of various materials, such as metal materials or organic materials. In order to increase the adhesion of the debris to the dust-proof sleeve 141, the dust-proof sleeve 141 is made of nylon material; the inner edge of the dust-proof sleeve 141 is fixed to the output shaft 110, and an interference fit can be used. There is a first gap between the dust-proof sleeve 141 and the anti-tangling ring 130. The bottom plate 142 is annularly arranged on the outer periphery of the dust-proof sleeve 141, and the bottom plate 142 can effectively block the debris.
[0035] In an alternative embodiment, the outer diameter of the bottom plate 142 is greater than half of the outer diameter of the bevel gearbox 170 of the impeller coal feeder 100, so that the outer edge of the bottom plate 142 can extend to the edge of the ore bin 300. The outer edge of the bottom plate 142 is annular, and a part of the outer edge of the bottom plate 142 is close to the ore bin 300. The outer edge of the bottom plate 142 extends to the edge of the ore bin 300. In this way, the sundries fed from the ore bin 300 will be blocked by the bottom plate 142 first. More preferably, the outer edge of the bottom plate 142 extends below the top edge of the ore bin 300, so that most of the sundries can be collected on the top of the bottom plate 142. In an alternative embodiment, there is a second gap between the bottom plate 142 and the impeller claw 160. The height of the bottom plate 142 is lower than the height of the ore bin 300, and the height of the impeller claw 160 is higher than the height of the ore bin 300. That is, the height of the top edge of the ore bin 300 is located between the bottom plate 142 and the impeller claw 160. The impeller claw 160 can normally feed the ore bin 300. After the material is fed by the impeller claw 160, it can fall onto the conveyor 200, such as a belt conveyor, and then be conveyed by the conveyor 200, while the sundries remain on the top of the bottom plate 142.
[0036] In an alternative embodiment, the dust cover 141 is divided into an upper part and a lower part. The size of the upper part is larger than that of the lower part. The outer periphery of the lower part is connected to the bottom plate 142. That is, the inner edge of the bottom plate 142 is clamped in the circumferential position of the lower part. The height of the upper part is equal to the height of the lower part. In this way, in the side view direction, the dust cover 141 is in a T shape. Through the above settings, the upper part provides a winding position for the sundries. Since the bottom plate 142 can block the sundries at the top, the top surface of the bottom plate 142 and the side surface of the upper part can block the sundries and can wind more sundries to prevent the sundries from falling downward into the corresponding position of the anti-winding ring 130, and on this basis, the anti-winding ring 130 can further block the remaining sundries.
[0037] In an alternative embodiment, a locking member 121 is further included. The locking member 121 is an internal hexagonal setscrew. At corresponding positions on the output shaft 110, three shaft holes are arranged at intervals in the circumferential direction. The sealing sleeve 120 is also provided with three threaded holes in the circumferential direction. The sealing sleeve 120 is fixed to the output shaft 110 by the three locking members 121, so that the sealing sleeve 120 can be firmly fixed on the output shaft 110. In an alternative embodiment, the bearing cover 150 is connected to the bevel gearbox 170. The connection between the bearing cover 150 and the bevel gearbox 170 is an existing connection method, which can be connected by a threaded method or fixed by screws. The bearing cover 150 is located at the top of the bevel gearbox 170. The bevel gearbox 170 has a gear transmission structure inside. For example, there are two meshing bevel gears in the bevel gearbox 170. The bevel gearbox 170 is drivingly connected to a driving device. One bevel gear is connected to the output end of the driving device, and the other bevel gear is connected to the bottom end of the output shaft 110. At the middle position of the output shaft 110, a bearing is provided, and the bearing is stuck in the bearing cover 150. In this way, the output shaft 110 can be driven to rotate by the driving device. Other gear transmission structures can also be used. The driving device can be a motor 180 or other driving machines that can drive the output shaft 110 to rotate.
[0038] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", "optional example" or "alternative embodiment" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.
[0039] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.
[0040] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.
Claims
1. An impeller coal feeder based on the output shaft seal, characterized in that Comprising: An output shaft (110) extending from a bearing gland (150) and connected to an impeller claw (160); A sealing sleeve (120) sleeved on the output shaft (110) and abutted against the bearing gland (150), the sealing sleeve (120) sealing the gap between the output shaft (110) and the bearing gland (150); An anti-entangling ring (130) placed on the bearing gland (150), the anti-entangling ring (130) being disposed outside the sealing sleeve (120), and there being a gap between the anti-entangling ring (130) and the outer periphery of the sealing sleeve (120) such that the anti-entangling ring (130) can move radially with respect to the sealing sleeve (120) on the output shaft (110), the height of the anti-entangling ring (130) being greater than or equal to that of the sealing sleeve (120) to block debris on the side of the sealing sleeve (120).
2. The impeller coal feeder based on the output shaft seal according to claim 1, characterized in that The height of the anti-entangling ring (130) is greater than or equal to 2 times the height of the sealing sleeve (120) protruding from the bearing gland (150).
3. The impeller coal feeder based on the output shaft seal according to claim 1, wherein Further comprising a shielding member (140) sleeved on the output shaft (110), there being a first gap between the shielding member (140) and the anti-entangling ring (130).
4. The impeller coal feeder based on the output shaft seal according to claim 3, characterized in that, The outer diameter of the shielding member (140) is greater than the outer diameter of the anti-entangling ring (130).
5. The impeller coal feeder based on the output shaft seal according to claim 4, wherein, The shielding member (140) includes a dust-proof sleeve (141) and a bottom plate (142), the dust-proof sleeve (141) being connected to the output shaft (110) in a sleeved manner, there being the first gap between the dust-proof sleeve (141) and the anti-entangling ring (130), and the bottom plate (142) being annularly disposed on the outer periphery of the dust-proof sleeve (141).
6. The impeller coal feeder based on the output shaft seal according to claim 5, wherein, The outer diameter of the bottom plate (142) is greater than half of the outer diameter of the bevel gear box (170) of the impeller coal feeder, such that the outer edge of the bottom plate (142) can extend to the edge of the ore bin (300).
7. The impeller coal feeder based on the output shaft seal according to claim 5, wherein, There is a second gap between the bottom plate (142) and the impeller claw (160), the height of the bottom plate (142) is lower than the height of the ore bin (300), and the height of the impeller claw (160) is higher than the height of the ore bin (300).
8. The impeller coal feeder based on the output shaft seal according to claim 5, characterized in that, The dust-proof sleeve (141) is divided into an upper part and a lower part, the size of the upper part is greater than that of the lower part, and the outer periphery of the lower part is connected to the bottom plate (142).
9. The impeller coal feeder based on the output shaft seal according to claim 1, wherein Further comprising a locking member (121) for fixing the sealing sleeve (120) to the output shaft (110).
10. The impeller coal feeder based on the output shaft seal according to claim 6, characterized in that, The bearing gland (150) is connected to the bevel gear box (170), and the bevel gear box (170) is drivingly connected to a driving device.