Sealing reinforcing device for transmission shaft

Abstract

The transmission shaft sealing reinforcing device comprises a fire grate frame, a transmission shaft and a sealing flange arranged on the fire grate frame, a sleeve is fixedly connected to the inner side of the fire grate frame, the sleeve and the transmission shaft are concentrically arranged, and the inner diameter of the sleeve is larger than the diameter of the transmission shaft; the end, away from the fire grate frame, of the sleeve is fixedly connected with a flange plate, the end, away from the sleeve, of the flange plate is detachably connected with a sealing plate used for sealing the sealing filler in the cavity, a gap is reserved between the sealing plate and the transmission shaft, and a check ring is fixedly connected to the transmission shaft and located on the inner side of the sealing plate. And the check ring is not in contact with the sealing plate, so that the sleeve, the flange plate, the sealing plate and the check ring form a labyrinth type sealing structure. According to the utility model, the sealing performance can be effectively improved, the ash leakage amount is reduced, the cleanliness of equipment is maintained, the service life of the equipment is prolonged, and the personal safety of operators is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical transmission sealing devices, and in particular to a transmission shaft sealing reinforcement device. Background Art

[0002] Waste incineration power generation technology has become a new trend and hotspot for many cities to solve the problem of waste disposal. Waste incineration can reduce the volume of waste by 90% and the amount by 70%-80%, greatly reducing the land occupation area and meeting the requirements of volume reduction; the waste heat from waste incineration can also be used for heating and power generation, achieving the purpose of resource recycling.

[0003] The grate is the core component of the waste incinerator, and the drive shaft is one of the most important components of the grate. The sealing flange of the Weilun incinerator grate drive shaft is installed in two halves, and there will inevitably be a gap. After running for a period of time, the shaft and the bearing are worn, and the shaft gradually sinks, resulting in a gradual increase in the gap between the shaft and the sealing flange. The sealing strip is prone to aging and failure, and when replacing the sealing strip, it is inconvenient to disassemble and assemble the sealing flange, and the workload is large. This structure has a poor sealing effect, and a large amount of ash leaks out of the furnace. The sanitary conditions of the equipment room are poor, and the ash must be cleaned frequently, which increases the workload of the operating personnel and threatens the safety of equipment and personnel. In addition, long-term ash accumulation around the bearing seat will affect the normal operation and service life of the bearing. In severe cases, it will cause the bearing to get stuck and damaged, and even force the furnace to be shut down for maintenance. To this end, the utility model proposes a transmission shaft seal reinforcement device. Utility Model Content

[0004] The embodiment of the present application provides a transmission shaft seal reinforcement device, which can effectively improve the sealing performance, reduce the amount of ash leakage, maintain the cleanliness of the equipment room, extend the service life of the equipment, and ensure the personal safety of the operating personnel.

[0005] In view of this, the present application provides a transmission shaft sealing reinforcement device, comprising: a grate frame, a transmission shaft and a sealing flange arranged on the grate frame, characterized in that a sleeve is fixedly connected to the inner side of the grate frame;

[0006] The sleeve is arranged concentrically with the transmission shaft, and the inner diameter of the sleeve is larger than the diameter of the transmission shaft;

[0007] The sleeve is filled with sealing filler;

[0008] One end of the sleeve away from the grate frame is fixedly connected with a flange plate;

[0009] The end of the flange plate away from the sleeve is detachably connected with a sealing plate for sealing the sealing filler in the cavity;

[0010] A gap is left between the sealing plate and the transmission shaft;

[0011] A retaining ring is fixedly connected to the transmission shaft;

[0012] The retaining ring is located on the inner side of the sealing plate, and the retaining ring does not contact the sealing plate, so that the sleeve, the flange plate, the sealing plate and the retaining ring form a labyrinth-type sealing structure.

[0013] Optionally, the sealing plate is connected to the flange plate by bolts.

[0014] Optionally, a first threaded hole is provided on the flange plate;

[0015] The sealing plate is provided with a second threaded hole;

[0016] The number of the second threaded holes is equal to the number of the first threaded holes and corresponds one to one.

[0017] Optionally, the retaining ring is in a circular ring structure, and the inner ring of the retaining ring is welded and fixed to the transmission shaft.

[0018] Optionally, the sleeve is fixed to the grate frame by welding.

[0019] Optionally, the flange plate is fixed to the sleeve by welding.

[0020] Optionally, the sealing filler is flexible graphite, carbon fiber or rubber.

[0021] It can be seen from the above technical scheme that the embodiments of the present application have the following advantages: the transmission shaft sealing reinforcement device does not need to dismantle and destroy the original equipment components (grate frame and sealing flange), and is simple to implement. A sleeve is fixedly connected to the inner side of the grate frame, and a sealing filler is filled in the sleeve. The end of the sleeve away from the grate frame is fixedly connected to a flange plate, and the end of the flange plate away from the sleeve is detachably connected to a sealing plate for sealing the sealing filler in the cavity. A gap is left between the sealing plate and the transmission shaft, and a retaining ring is fixedly connected to the transmission shaft. The retaining ring is located on the inner side of the sealing plate, and the retaining ring does not contact the sealing plate, so that the sleeve, flange plate, sealing plate and retaining ring form a labyrinth sealing structure, which can achieve a complete sealing effect, thereby reducing the amount of ash leakage, maintaining the cleanliness of the equipment room, and reducing the workload of operating personnel. At the same time, the sealing filler can effectively insulate and reduce the working environment temperature, thereby ensuring the personal safety of operating personnel, extending the service life of bearings, and reducing operating and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the transmission shaft seal reinforcement device in an embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the structure in which the transmission shaft seal reinforcement device is installed on the transmission shaft of the incinerator in the embodiment of the present application;

[0024] Wherein, the accompanying drawings are marked as follows:

[0025] 1-sleeve, 2-flange plate, 3-retaining ring, 4-sealing packing, 5-sealing plate, 6-bolt, 7-transmission shaft, 8-sealing flange, 9-grate frame. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] 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 an indirect connection 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 this application can be understood according to specific circumstances.

[0029] The present application provides an embodiment of a transmission shaft seal reinforcement device. Figure 1 and Figure 2 .

[0030] The transmission shaft sealing reinforcement device in this embodiment includes: a grate frame 9, a transmission shaft 7 and a sealing flange 8 arranged on the grate frame 9, a sleeve 1 is fixedly connected to the inner side of the grate frame 9, the sleeve 1 is concentrically arranged with the transmission shaft 7, and the inner diameter of the sleeve 1 is larger than the diameter of the transmission shaft 7; the sleeve 1 is filled with a sealing filler 4, and the end of the sleeve 1 away from the grate frame 9 is fixedly connected to a flange plate 2, and the end of the flange plate 2 away from the sleeve 1 is detachably connected to a sealing plate 5 for sealing the sealing filler 4 in the cavity, and a gap is left between the sealing plate 5 and the transmission shaft 7, and a retaining ring 3 is fixedly connected to the transmission shaft 7, the retaining ring 3 is located on the inner side of the sealing plate 5, and the retaining ring 3 does not contact the sealing plate 5, so that the sleeve 1, the flange plate 2, the sealing plate 5 and the retaining ring 3 form a labyrinth-type sealing structure.

[0031] It should be noted that: the transmission shaft sealing reinforcement device is suitable for sealing at the junction of the transmission shaft 7 and the equipment. It does not need to dismantle and destroy the original equipment parts (grate frame 9 and sealing flange 8), and is simple to implement. A sleeve 1 is fixedly connected to the inner side of the grate frame 9, and a sealing filler 4 is filled in the sleeve 1. The end of the sleeve 1 away from the grate frame 9 is fixedly connected to a flange plate 2, and the end of the flange plate 2 away from the sleeve 1 is detachably connected to a sealing plate 5 for sealing the sealing filler 4 in the cavity. A gap is left between the sealing plate 5 and the transmission shaft 7, and a retaining ring 3 is fixedly connected to the transmission shaft 7. The retaining ring 3 is located on the inner side of the sealing plate 5, and the retaining ring 3 does not contact the sealing plate 5, so that the sleeve 1, flange plate 2, sealing plate 5 and retaining ring 3 form a labyrinth sealing structure, which can achieve a complete sealing effect, thereby reducing the amount of ash leakage, maintaining the cleanliness of the equipment room, and reducing the workload of the operating personnel. At the same time, the sealing filler 4 can effectively insulate and reduce the working environment temperature, thereby ensuring the personal safety of the operating personnel, extending the service life of the bearing, and reducing the operation and maintenance costs.

[0032] The above is the first embodiment of a transmission shaft seal reinforcement device provided by the embodiment of the present application. The following is the second embodiment of a transmission shaft seal reinforcement device provided by the embodiment of the present application. For details, please refer to Figure 1 and Figure 2 .

[0033] The transmission shaft sealing reinforcement device in this embodiment includes: a grate frame 9, a transmission shaft 7 and a sealing flange 8 arranged on the grate frame 9, a sleeve 1 is fixedly connected to the inner side of the grate frame 9, the sleeve 1 is concentrically arranged with the transmission shaft 7, and the inner diameter of the sleeve 1 is larger than the diameter of the transmission shaft 7; the sleeve 1 is filled with a sealing filler 4, the end of the sleeve 1 away from the grate frame 9 is fixedly connected to a flange plate 2, the end of the flange plate 2 away from the sleeve 1 is detachably connected to a sealing plate 5 for sealing the sealing filler 4 in the cavity, and the sealing filler 4 can be replaced by removing the sealing plate 5; a gap is left between the sealing plate 5 and the transmission shaft 7, a retaining ring 3 is fixedly connected to the transmission shaft 7, the retaining ring 3 is located on the inner side of the sealing plate 5, and the retaining ring 3 does not contact the sealing plate 5, so that the sleeve 1, the flange plate 2, the sealing plate 5 and the retaining ring 3 form a labyrinth sealing structure.

[0034] It should be noted that: the transmission shaft seal reinforcement device retains the original sealing flange 8 structure and adds sealing components, which is easy to operate and does not affect or damage the original components of the equipment.

[0035] It can be understood that by placing the retaining ring 3 in the area of ​​the sleeve 1 and fixedly connecting it to the transmission shaft 7, a labyrinth-type sealing effect can be achieved.

[0036] The sealing plate 5 is connected to the flange plate 2 by bolts 6. Specifically, the flange plate 2 is provided with first threaded holes, and the sealing plate 5 is provided with second threaded holes, and the number of the second threaded holes is equal to the number of the first threaded holes and corresponds one to one.

[0037] The retaining ring 3 is in a circular ring structure, and the inner ring of the retaining ring 3 is welded and fixed to the transmission shaft 7, so that the retaining ring 3 and the transmission shaft 7 rotate together.

[0038] Specifically, the sleeve 1 is fixed to the grate frame 9 by welding, and the flange plate 2 is fixed to the sleeve 1 by welding.

[0039] The sealing filler 4 can be made of flexible graphite or rubber, which has a compression margin, does not affect the normal rotation of the shaft, has a good heat insulation effect, and is replaceable.

[0040] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A transmission shaft seal reinforcement device, comprising: A grate frame, a transmission shaft and a sealing flange arranged on the grate frame, wherein a sleeve is fixedly connected to the inner side of the grate frame; The sleeve is arranged concentrically with the transmission shaft, and the inner diameter of the sleeve is larger than the diameter of the transmission shaft; The sleeve is filled with sealing filler; One end of the sleeve away from the grate frame is fixedly connected with a flange plate; The end of the flange plate away from the sleeve is detachably connected with a sealing plate for sealing the sealing filler in the cavity; A gap is left between the sealing plate and the transmission shaft; A retaining ring is fixedly connected to the transmission shaft; The retaining ring is located on the inner side of the sealing plate, and the retaining ring does not contact the sealing plate, so that the sleeve, the flange plate, the sealing plate and the retaining ring form a labyrinth-type sealing structure.

2. The transmission shaft seal reinforcement device according to claim 1, characterized in that: The sealing plate is connected to the flange plate by bolts.

3. The transmission shaft seal reinforcement device according to claim 2, characterized in that: The flange plate is provided with a first threaded hole; The sealing plate is provided with a second threaded hole; The number of the second threaded holes is equal to the number of the first threaded holes and corresponds one to one.

4. The transmission shaft seal reinforcement device according to claim 1, characterized in that: The retaining ring is in a circular ring structure, and the inner ring of the retaining ring is welded and fixed to the transmission shaft.

5. The transmission shaft seal reinforcement device according to claim 1, characterized in that: The sleeve is fixed to the grate frame by welding.

6. The transmission shaft seal reinforcement device according to claim 1, characterized in that: The flange plate is fixed to the sleeve by welding.

7. The transmission shaft seal reinforcement device according to claim 1, characterized in that: The sealing filler is flexible graphite, carbon fiber or rubber.

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