Sealing device for output shaft of main speed reducer of impeller coal feeder
By designing a rotatable protective shell and sealing structure, the coal material falls into the output shaft of the impeller coal feeder main reducer is solved, and the sealing effect and heat dissipation effect are achieved, extending the service life of the equipment.
Patent Information
- Application Number
- CN202420800275.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The output shaft of the main reducer of the impeller coal feeder is prone to coal material falling into the reducer case during operation, resulting in seal damage and reducer damage.
A sealing device including a box, a fixing assembly and a rotating assembly is designed. The rotatable protective shell rotates synchronously with the output shaft of the reducer, and combines the structures such as wedge blocks, sliding blocks, pressure plates and sealing plates to close the tiny gap. , and heat dissipation is achieved through fan blades and check valves.
Effectively prevent coal materials from entering the reducer, extend the service life of the sealing device, prevent damage to the reducer, and at the same time achieve the heat dissipation effect inside the box.
Smart Images
Figure CN222122176U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shaft sealing devices for coal feeders, in particular to an output shaft sealing device for a main reducer of an impeller coal feeder. Background Art
[0002] The impeller coal feeder is one of the main indispensable coal distribution equipment in the long-gap coal ditch. The impeller coal feeding device is installed on a trolley that can move along the longitudinal track of the coal ditch. The main transmission part is composed of a main motor, a safety coupling, a main reducer, a pin coupling and an impeller. The main mechanism is an impeller rotating around a vertical axis and extending into the gap of the long-gap coal ditch. With its radially arranged blades (also called plow arms or blade claws), the coal on the bottom trough platform of the coal ditch is pushed into the coal hopper installed on the machine frame under the impeller, and the coal is sent to the belt through the coal hopper.
[0003] At present, the output shaft of the main reducer of the impeller coal feeder is generally set to a vertical upward state. In order to facilitate the output shaft to drive the blade claw to rotate when rotating, the coal can be moved into the coal hopper, so that the blade claw can move the raw coal in the coal trough to the belt and transport it away when the coal feeder rotates. In order to prevent the coal from falling from the output shaft gap to the rotating part of the output shaft of the reducer during the drop, causing the reducer seal to be damaged, thereby causing damage to the internal bearings and gears of the reducer, a sealing baffle or a cleaning mechanism is usually installed at the shell of the coal feeder hopper. The material of the sealing baffle is mostly rubber rings, which will wear and leak coal in a short time after use, so that the coal enters the reducer through the gap between the output shaft and the sealing ring, causing the seal to fail, and the cleaning mechanism cannot thoroughly clean the coal, and some of the coal will still enter the reducer housing, eventually causing the reducer seal to be damaged and the reducer to enter coal. Therefore, an impeller coal feeder main reducer output shaft sealing device is urgently needed to solve the problem that the coal is easy to fall into the main reducer housing when the coal feeder is working, thereby causing the reducer to be damaged. Utility Model Content
[0004] In order to solve the problem that coal is easy to fall into the main reducer case during operation of the current coal feeder, thereby causing damage to the reducer, an output shaft sealing device for the main reducer of an impeller coal feeder is invented.
[0005] The technical solution of the utility model is that it comprises a box body, wherein a reducer in the up and down directions is arranged in the box body, and the output end of the reducer extends upwardly out of the box body;
[0006] A fixing component, wherein the fixing component is fixedly connected to the box body, and comprises a fixing end cover and a fastener. The fixing end cover is fixedly arranged at the upper end of the box body, and a plurality of fasteners are arranged on the fixing end cover and fixedly connected to the box body through the fasteners. The middle part of the fixing end cover is provided with a convexity;
[0007] The rotating component is rotatably arranged on the upper side of the fixed component to cover the fixed component, and includes a protective shell, which is fixedly mounted on the output end of the reducer, and the lower end of the protective shell can rotate relatively with the fixed end cover.
[0008] By adopting the above scheme, the rotatable protective shell on the fixed end cover can drive the protective shell to rotate synchronously when the output shaft of the reducer rotates. Since the protective shell and the output shaft of the reducer rotate synchronously, no relative wear and gap will occur between the two. The protective shell covers the top of the fixed end cover, which is beneficial to protect the inside of the reducer.
[0009] Preferably, a sealed cavity is provided in the protective shell, a sealing plate which can move up and down is arranged in the sealed cavity, a pressure plate is arranged at the lower end of the sealing plate, a sliding block which can slide up and down in the sealed cavity is arranged at the lower end of the pressure plate, an inclined surface is provided on the sliding block, a slidable wedge block is arranged in the sealed cavity, and the top end of the wedge block can slide on the inclined surface.
[0010] Preferably, the wedge block is provided with a through hole, the protective shell is provided with a plurality of fixing bolts evenly distributed along its circumference and capable of passing through the through holes, each of the fixing bolts is provided with a protrusion capable of contacting the wedge block, and the output end of the reducer is provided with threaded holes corresponding one-to-one to the fixing bolts.
[0011] Preferably, the sealing plate may be made of rubber.
[0012] Preferably, a heat dissipation cavity is provided at the lower end of the protective shell, and a plurality of communication channels connected to the box body are provided in the heat dissipation cavity. Each of the communication channels is provided with a one-way valve that allows gas to flow from the box body to the heat dissipation cavity in one direction. A plurality of fan blades evenly distributed along its circumference are provided in the sealed cavity, and a plurality of heat dissipation holes evenly distributed along its circumference are provided on the protective shell, and the fan blades drive airflow to be discharged from the heat dissipation holes when rotating.
[0013] The following beneficial effects can be achieved by adopting the technical solution of the utility model:
[0014] (1) Through the rotatable protective shell on the fixed end cover, when the output shaft of the reducer rotates, the protective shell is driven to rotate synchronously. Since the protective shell and the output shaft of the reducer rotate synchronously, there will be no relative wear and gap between them. The protective shell covers the top of the fixed end cover, which is beneficial to protect the inside of the reducer;
[0015] (2) A wedge block, a sliding block, a pressure plate, and a sealing plate are provided. Since the protective housing is mounted on the output shaft of the reducer during installation, there may be a small gap between the protective housing and the output shaft. When the protective housing is fixed by fixing bolts, the fixing bolts push the wedge block to slide, the wedge block drives the sliding block to move upward, the wedge block drives the pressure plate to move upward, and the pressure plate drives the sealing plate upward to contact the protective housing. At this time, the small gap between the protective housing and the output shaft of the reducer is closed;
[0016] (3) A fan blade and a one-way valve are provided. When the protective shell rotates, the protective shell drives the fan blade to rotate. At the same time, the fan blade drives the air flow to be discharged from the heat dissipation hole when rotating, thereby achieving the effect of heat dissipation inside the box;
[0017] The technical solution of the utility model has broad application prospects in the technical field of coal feeder shaft sealing devices. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is an axonometric drawing of the present utility model.
[0019] Figure 2 It is a top view of the utility model.
[0020] Figure 3 It is a front view full cutaway view of the utility model.
[0021] Figure 4 It is a cutaway view of the rotating assembly of the present utility model.
[0022] Figure 5 It is a cutaway view of the fan blade of the utility model.
[0023] Figure 6 For this utility model Figure 3 A is an enlarged view of the middle image.
[0024] Among them, 1. box body, 2. reducer, 3. fixed component, 4. fixed end cover, 5. fastener, 6. rotating component, 7. protective shell, 8. sealing chamber, 9. sealing plate, 10. pressure plate, 11. sliding block, 12. wedge block, 13. fixing bolt, 14. threaded hole, 15. heat dissipation chamber, 16. connecting channel, 17. one-way valve, 18. fan blade, 19. heat dissipation hole. DETAILED DESCRIPTION
[0025] The following will clearly and completely describe the technical solutions of various embodiments of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0026] In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0027] like Figure 1 to Figure 6The output shaft sealing device of the main reducer 2 of the impeller coal feeder shown includes a casing 1. A specific embodiment is that the reducer 2 is fixedly connected in the casing 1 in the up and down directions, and the output end of the reducer 2 extends upward from the casing 1. The output end of the reducer 2 is connected to the blade. When the blade moves the coal, due to the relative rotation between the output shaft and the casing 1, a gap will appear between the ordinary output shaft and the casing 1 after long-term wear, and the coal may enter the reducer 2 through the gap and damage the reducer 2; a fixed component 3, the fixed component 3 and the casing 1 are fixedly connected, including a fixed end cover 4 and a fastener 5. The fixed end cover 4 is fixedly arranged at the upper end of the casing 1, and a plurality of fasteners 5 are arranged on the fixed end cover 4 and fixedly connected to the casing 1 through the fasteners 5. The middle part of 4 is provided with a protrusion. In a specific embodiment, the fastener 5 is set as a fixing screw, and eight fixing screws are set on the fixed end cover 4; the rotating component 6 is rotatably set on the upper side of the fixed component 3 to cover the fixed component 3, including a protective shell 7, the protective shell 7 is set and fixed on the output end of the reducer 2, and the lower end of the protective shell 7 and the fixed end cover 4 can rotate relative to each other. When the output shaft of the reducer 2 rotates, the protective shell 7 is driven to rotate synchronously through the rotatable protective shell 7 on the fixed end cover 4. Since the protective shell 7 and the output shaft of the reducer 2 rotate synchronously, no relative wear and gap will occur between the two. The protective shell 7 covers the upper side of the fixed end cover 4, which is beneficial to protect the inside of the reducer 2.
[0028] like Figure 1 to Figure 6 The output shaft sealing device of the main reducer 2 of the impeller coal feeder shown in the figure is a specific embodiment. A sealing chamber 8 is opened in the protective shell 7. The sealing chamber 8 is located on the upper side of the protective shell 7. A sealing plate 9 that can move up and down is arranged in the sealing chamber 8. The lower end of the sealing plate 9 is in contact with a pressure plate 10. The material of the sealing plate 9 can be selected as rubber material. The middle part of the sealing plate 9 is in contact with the output shaft of the reduction frame, and the upper end thereof is in contact with the sealing chamber 8. When the sealing plate 9 is squeezed, it is deformed, and at this time, the output shaft and the protective shell are deformed. The small gap between the two bodies 7 is sealed to improve the protection performance of the output shaft. The lower end of the pressure plate 10 is in contact with a sliding block 11 that can slide up and down in the sealing chamber 8. The sliding block 11 is provided with an inclined surface. A slidable wedge block 12 is slidably connected in the sealing chamber 8. The top of the wedge block 12 can slide on the inclined surface. The wedge block 12 is located at the lower end of the sealing chamber 8. When the wedge block 12 moves on the inclined surface, it drives the sliding block 11 to move upward, and the sliding block 11 drives the pressure plate 10 upward to squeeze the sealing plate 9.
[0029] like Figure 1 to Figure 6The output shaft sealing device of the impeller coal feeder main reducer 2 shown in the figure is a specific embodiment in which a through hole is provided on the wedge block 12, and a plurality of fixing bolts 13 are evenly distributed along the circumference thereof and can pass through the through hole are provided on the protective shell 7. In the present embodiment, the number of the fixing bolts 13 is set to 4, and each fixing bolt 13 is provided with a protrusion that can contact the wedge block 12. The output end of the reducer 2 is provided with threaded holes 14 corresponding to the fixing bolts 13 one by one. When the fixing bolts 13 are installed, the fixing bolts 13 push the wedge block 12 to move, and the protective shell 7 and the output shaft are fixed by the fixing bolts 13.
[0030] like Figure 1 to Figure 6 The output shaft sealing device of the impeller coal feeder main reducer 2 shown in the figure has a specific embodiment as follows: a heat dissipation cavity 15 is provided at the lower end of the protective shell 7, and a plurality of communication channels 16 connected with the casing 1 are provided in the heat dissipation cavity 15, and a one-way valve 17 is fixedly connected in each communication channel 16 so that the gas can flow from the casing 1 to the heat dissipation cavity 15 in one direction, and a plurality of fan blades 18 uniformly distributed along the circumference thereof are fixedly provided in the sealing cavity 8, and a plurality of heat dissipation holes 19 uniformly distributed along the circumference thereof are provided on the protective shell 7, and the fan blades 18 drive the airflow to be discharged from the heat dissipation holes 19 when rotating, and when the protective shell 7 rotates, the protective shell 7 drives the fan blades 18 to rotate, and at the same time, the fan blades 18 drive the airflow to be discharged from the heat dissipation holes 19 when rotating, thereby achieving the effect of heat dissipation inside the casing 1.
[0031] The working principle of the device has been explained through the above embodiments. The above embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several deformations and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. An output shaft sealing device for a main reducer of an impeller coal feeder, comprising a housing (1), characterized in that: A reducer (2) is arranged in the box body (1) in the up-and-down direction, and the output end of the reducer (2) extends upward out of the box body (1); A fixing assembly (3), wherein the fixing assembly (3) is fixedly connected to the box body (1), and comprises a fixing end cover (4) and a fastener (5), wherein the fixing end cover (4) is fixedly arranged at the upper end of the box body (1), wherein the fixing end cover (4) is provided with a plurality of fasteners (5) and is fixedly connected to the box body (1) via the fasteners (5), and wherein a middle portion of the fixing end cover (4) is provided with a protrusion; A rotating assembly (6) is rotatably arranged on the upper side of the fixed assembly (3) for covering the fixed assembly (3), and comprises a protective shell (7). The protective shell (7) is fixedly mounted on the output end of the reducer (2), and the lower end of the protective shell (7) and the fixed end cover (4) are relatively rotatable.
2. The output shaft sealing device of the main reducer of the impeller coal feeder according to claim 1 is characterized in that: A sealing cavity (8) is provided in the protective shell (7), a sealing plate (9) which can move up and down is provided in the sealing cavity (8), a pressure plate (10) is provided at the lower end of the sealing plate (9), a sliding block (11) which can slide up and down in the sealing cavity (8) is provided at the lower end of the pressure plate (10), an inclined surface is provided on the sliding block (11), and a slidable wedge block (12) is provided in the sealing cavity (8), and the top end of the wedge block (12) can slide on the inclined surface.
3. The output shaft sealing device of the main reducer of the impeller coal feeder according to claim 2 is characterized in that: The wedge block (12) is provided with a through hole, the protective housing (7) is provided with a plurality of fixing bolts (13) evenly distributed along its circumference and capable of passing through the through hole, each of the fixing bolts (13) is provided with a protrusion capable of contacting the wedge block (12), and the output end of the reducer (2) is provided with threaded holes (14) corresponding to the fixing bolts one by one.
4. The impeller coal feeder main reducer output shaft sealing device according to claim 2, characterized in that: The sealing plate (9) may be made of rubber.
5. The output shaft sealing device of the main reducer of the impeller coal feeder according to claim 2, characterized in that: A heat dissipation cavity (15) is provided at the lower end of the protective shell (7), and a plurality of communication channels (16) communicating with the box body (1) are provided in the heat dissipation cavity (15), and each of the communication channels (16) is provided with a one-way valve (17) that allows gas to flow from the box body (1) to the heat dissipation cavity (15) in one direction. A plurality of fan blades (18) evenly distributed along its circumference are provided in the sealed cavity (8), and a plurality of heat dissipation holes (19) evenly distributed along its circumference are provided on the protective shell (7), and when the fan blades (18) rotate, they drive airflow to be discharged from the heat dissipation holes (19).