Mechanical rapping transmission device of waste heat boiler
By designing a mechanical vibration transmission device for waste heat boiler, the problems of motor burning due to high temperature in the prior art and short service life are solved, and the long-term use of the device and safe and reliable operation are achieved, saving the production costs of the enterprise.
Patent Information
- Application Number
- CN202421876827.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-05
AI Technical Summary
The existing waste heat boiler vibration and detonation device is prone to burning due to high temperatures, with short service life, high failure rate and long maintenance cycle, resulting in the company losing about 80,000 yuan per year.
A mechanical vibration transmission device of waste heat boiler is designed. Through the connection between the electric reducer and the transmission shaft sleeve, the cross short shaft and the connecting long shaft are adopted to achieve stable connection of the transmission shaft and reduce the impact of high temperature on the motor.
It extends the service life of the boiler vibration device, reduces the failure rate and maintenance cycle, saves production costs, and improves the reliability and safety of the system.
Smart Images
Figure CN222880282U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of waste heat boiler vibrating devices in the metallurgical industry, and in particular to a mechanical vibrating transmission device for a waste heat boiler. Background Art
[0002] The characteristics of the waste heat boiler rapping device currently used in the membrane wall of the inlet of the bottom blowing smelting waste heat boiler are:
[0003] (1) The waste heat boiler rapping device used for the membrane wall at the inlet of the original bottom blowing smelting waste heat boiler is a hammer-type rapping device, and the original actual picture is shown in Figure 11.
[0004] (2) The original waste heat boiler vibrating device has a motor power of 0.37kw, a vibrating force of 40-400kN, an overall size of 660×288×1030, a vibrating frequency of 3 times / min, a vertical head swing range of 15-90°, and the vibrating motor is easily burned out by high temperature.
[0005] (3) The waste heat boiler vibrating device used in the membrane wall at the inlet of the original bottom blowing smelting waste heat boiler has an internal temperature of more than 1000°C and an external temperature of nearly 100°C (i.e., the boiler vibrating environment temperature). The operating environment of the boiler vibrating device is very harsh. There are 5 vibrating devices on the east, south and west sides of the group cover. More than 2 motors need to be sent out for repair every month due to high temperature damage. A whole set of vibrating devices needs to be replaced every year, which is not easy to construct.
[0006] (4) The waste heat boiler rapping device used for the membrane wall at the inlet of the original bottom blowing smelting waste heat boiler. The motor of the original rapping device was installed on the rapping equipment body. Due to the high temperature of the boiler and the corrosion of the escaping flue gas, the service life was short, the failure rate was high, and the service life was short.
[0007] (5) The waste heat boiler vibrating device used for the membrane wall at the inlet of the original bottom blowing smelting waste heat boiler has a total of 5 vibrating devices on the east, south and west sides of the group cover. Every month, more than 2 motors need to be sent out for repair due to high temperature damage. A complete set of vibrating devices needs to be replaced every year. The maintenance and replacement cost of the 5 boiler vibrating devices at the inlet alone is about 80,000 yuan per year.
[0008] (6) Each time the boiler vibrating device is dismantled and replaced, the entire set of vibrating devices must be dismantled and reassembled. Each vibrating device takes more than 3 hours to dismantle and reassemble, and the annual outsourcing maintenance cost is about 20,000 yuan; each treatment requires a lot of manpower and material resources; and it cannot be fundamentally solved. In addition, due to the relatively high temperature, the construction difficulty is greatly increased.
[0009] The above characteristics result in the need to dismantle and install the waste heat boiler vibrating device used in the membrane wall of the bottom blowing smelting waste heat boiler inlet more than ten times a year, with a labor cost of 20,000 yuan; the vibrating motors are repaired more than 30 times a year, with a maintenance fee of 1,000 yuan per vibrating motor, an annual cost of about 30,000 yuan, and a long maintenance cycle. The company loses about 80,000 yuan a year, which greatly increases the company's working capital cost.
[0010] Therefore, it is a problem worthy of study to provide a mechanical vibration transmission device for a waste heat boiler which has a long service life, is safe and reliable. Utility Model Content
[0011] In order to overcome the defects of the prior art, the utility model provides a mechanical vibration transmission device for a waste heat boiler.
[0012] Based on the above purpose, the utility model adopts the following technical solutions:
[0013] A mechanical rapping transmission device for a waste heat boiler comprises a transmission shaft sleeve I connected to an output shaft key of an electric reducer, the transmission shaft sleeve I is connected to the transmission shaft sleeve II through a cross short shaft I, the transmission shaft sleeve II is connected to one end of a connecting long shaft, the other end of the connecting long shaft is connected to the transmission shaft sleeve III, the transmission shaft sleeve III is connected to the transmission shaft sleeve IV through a cross short shaft II, the transmission shaft sleeve IV is connected to a bearing seat assembly of a rapping device, the bearing seat assembly of the rapping device comprises a bearing seat, a sprocket, and a transmission shaft, there are two bearing seats, the transmission shaft is a stepped shaft with a thick middle section and thin ends, one end of the thick middle section of the transmission shaft A sprocket keyway is provided, the middle thick shaft section of the transmission shaft is fixed in the bearing seat, the sprocket is fixed to the transmission drawer by a key connection, the thin shaft sections at both ends of the transmission shaft are respectively provided with connecting keyways so as to be connected to the transmission shaft sleeve by a key, and the sprocket is connected to the transmission wheel of the waste heat boiler vibrating device through a chain; a keyway is provided at one end of the inner side of the transmission shaft sleeve for key connection with each transmission shaft shaft head, and a pin ear is provided at the other end, and a pin hole is provided on the pin ear; there is a pin hole at each end of the cross short shaft, which is connected to the transmission shaft sleeve by a pin; the connecting long shaft is a stepped shaft with a thick middle section and thin ends, and connecting keyways are respectively provided on the thin shaft sections at both ends of the connecting long shaft.
[0014] Furthermore, two connecting key grooves are arranged opposite to each other on the thin shaft section at each end of the transmission shaft.
[0015] Furthermore, two connecting key grooves are arranged opposite to each other on the thin shaft section connected to each end of the long shaft.
[0016] Furthermore, two key grooves are arranged opposite to each other at one end of the inner side of the transmission shaft sleeve.
[0017] Furthermore, the center lines of the pin holes at both ends of the cross short shaft are perpendicular to each other.
[0018] Furthermore, the connection sequence of components between the motor reducer and the rapping device is the output shaft of the motor reducer - the transmission shaft sleeve I - the cross short shaft I - the transmission shaft sleeve II - the connecting long shaft - the transmission shaft sleeve III - the cross short shaft II - the transmission shaft sleeve IV - the rapping device bearing seat assembly.
[0019] The beneficial effects of the utility model are:
[0020] A mechanical vibration transmission device for a waste heat boiler has a longer overall service life, the boiler vibration device is basically not easy to be damaged, and can basically achieve a long-term use effect;
[0021] This device can be used in any use scenario under the same working conditions. The motor reducer can be reasonably selected and the size of each component can be designed according to different use conditions. This technology is now applied to the company's bottom-blowing waste heat boiler system. The operation process is safe and reliable. The actual application process proves that this technology successfully avoids problems such as high temperature, easy burning of the vibration motor, and inconvenient maintenance. It realizes controllable operation and reduces production investment. It plays an important role in improving the system's start-up rate and is worthy of vigorous promotion;
[0022] A set of vibrating devices costs 17,000 yuan, a set of motor acceleration and reduction gears costs 9,000 yuan, and a boiler mechanical vibrating costs a total of 26,000 yuan; the boiler vibrating motor was damaged once due to high temperature, and the maintenance cost of each unit was about 1,000 yuan; there are 5 vibrating devices on the east, south and west sides of the cluster hood, and the equipment investment cost is a total of 130,000 yuan. The 3 boiler vibrating devices on the fire-facing side of the south side of the cluster hood were upgraded and renovated. The 3 boiler vibrating devices were connected by a transmission device, and the 3 were combined into one and controlled by a motor, reducing the number of vibrating motors by 2. Since there is no motor damage to repair, there is no need to maintain and replace the vibrating device, saving 80,000 yuan in production costs each year; at the same time, the boiler vibrating transmission device is simple and practical in design, with low maintenance costs, and reduces the labor intensity of workers, making positive contributions to the sustainable development of the enterprise and the health and safety of employees. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the structure of the bearing seat assembly;
[0024] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle transmission shaft;
[0025] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle bearing seat;
[0026] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle sprocket;
[0027] Figure 5It is a schematic diagram of the structure of the transmission shaft sleeve;
[0028] Figure 6 yes Figure 5 Bottom view of
[0029] Figure 7 It is a schematic diagram of the structure of the cross short axis;
[0030] Figure 8 It is a schematic diagram of the structure connecting the long axis;
[0031] Fig. 9 yes Figure 8 AA section view;
[0032] Fig.10 It is the general assembly drawing of the utility model;
[0033] Fig.11 This is the original vibration device diagram. DETAILED DESCRIPTION
[0034] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited thereto.
[0035] A mechanical vibration transmission device for a waste heat boiler, such as Figures 1 to 10As shown, a mechanical rapping transmission device for a waste heat boiler comprises a transmission shaft sleeve I3 whose keyway end is key-connected to an output shaft 11 of an electric reducer 1, the pin ear end of the transmission shaft sleeve I3 is connected to the left end of a cross short shaft I4 through a pin I6, the right end of the cross short shaft I4 is connected to the pin ear end of the transmission shaft sleeve II3 through a pin II6, the keyway end of the transmission shaft sleeve II3 is connected to the left end of a connecting long shaft 5, the right end of the connecting long shaft 5 is key-connected to the keyway end of the transmission shaft sleeve III3, the pin ear end of the transmission shaft sleeve III3 is connected to the left end of a cross short shaft II4 through a pin III6, the right end of the cross short shaft II4 is connected to the pin ear end of the transmission shaft sleeve IV3 through a pin IV6, the keyway end of the transmission shaft sleeve IV3 is connected to a bearing seat assembly 2 of a rapping device, the bearing seat assembly 2 of the rapping device comprises a transmission shaft 21, a bearing seat 22 and a sprocket 23, there are two bearing seats 22, the transmission shaft 21 is a stepped shaft with a thick middle and thin ends, and the transmission shaft 21 is a stepped shaft with a thick middle and thin ends. A sprocket keyway 212 is provided at one end of the middle thick shaft section of the moving shaft 21, the middle thick shaft section of the transmission shaft 21 is fixed in the bearing seat 22, a keyway 231 is provided inside the sprocket 23, and the sprocket 23 is fixed on the transmission drawer 21 by a key connection. The thin shaft sections at both ends of the transmission shaft 21 are respectively provided with connecting keyways so as to be connected with the transmission shaft sleeve IV3 by a key, and two connecting keyways 211 and 213 are relatively provided on the thin shaft section at each end of the transmission shaft 21, and the sprocket 23 is connected to the transmission wheel of the waste heat boiler rapping device through a chain; a keyway 32 is provided at one end of the inner side of the transmission shaft sleeve 3, and a pin ear is provided at the other end, and a pin hole 31 is provided on the pin ear; pin holes 41 and pin holes 42 are respectively provided at both ends of the cross short shaft 4, and are connected to the transmission shaft sleeve 3 by a pin 6; the connecting long shaft 5 is a stepped shaft with a thick middle and thin ends, and connecting keyways 51 are respectively provided on the thin shaft sections at both ends of the connecting long shaft 5, and two connecting keyways 51 are relatively provided on the thin shaft section at each end.
[0036] Two key grooves 32 are oppositely arranged at one end of the inner side of the transmission shaft sleeve 3 .
[0037] The center lines of the pin holes 41 and 42 at both ends of the cross short shaft 4 are perpendicular to each other.
[0038] In practice, if Figure 1 As shown, the thin shaft section at one end of the transmission shaft 21 is L1=80mm long and D1=42.5mm in diameter; the thin shaft section at the other end is L6=35mm and 42.5mm in diameter; the diameter of the middle thick section is D2=50mm, and the total length is L=314mm; a total of five keyways are set, two keyways 211 and 213 at each end, and one middle sprocket keyway 212, which is used to fix each connection part. The bearing seat width L2=37mm, the spacing between the two bearing seats 21 is L3=80mm, the sprocket 23 width is L5=30mm, and the spacing between the sprocket 23 and the adjacent bearing seat 22 is L4=10mm. Figure 2As shown, the length L7 of the keyway 211 is 80 mm, the length L8 of the sprocket keyway 212 is 30 mm, and the length L9 of the keyway 213 is 35 mm.
[0039] One end of the transmission shaft sleeve 3 is a sleeve with an inner diameter of 43mm, an outer diameter of 70mm, a length of 108mm, and a double keyway, which is installed on the shaft head of each transmission shaft, and the other end is two pin ears, and the inner diameter of the pin hole 31 is 18mm. The sleeve end is installed on the output shaft of the reducer and connected to the long shaft 5 through a key, and the pin ear end is connected to the cross short shaft 4 through a pin 6; the cross short shaft 4 is a shaft with an outer diameter of 42.5mm and a length of 89mm, and there is a pin hole 31 with an inner diameter of 18mm on each side, and the center lines of the pin holes 31 are perpendicular to each other. It is connected to the transmission shaft sleeve 3 through a pin 6; the middle thick shaft section of the connecting long shaft 5 has an outer diameter of D3=50mm and a length of W1=310mm, and the outer diameters of the thin shaft sections at both ends are D4 and D5=42.5mm, and the lengths are W2 and W3=80mm, and double keyways are set.
[0040] The connection sequence of parts between the motor reducer and the rapping device is electric reducer output shaft - transmission shaft sleeve I - cross short shaft I - transmission shaft sleeve II - connecting long shaft - transmission shaft sleeve III - cross short shaft II - transmission shaft sleeve IV - rapping device bearing seat assembly, and the connection sequence between the rapping devices is similar (that is, the right end thin shaft section of the rapping device bearing seat assembly is connected to the keyway end of the transmission shaft sleeve V through a key connection, and then connected to the transmission shaft sleeve VI through the cross short shaft III, and so on).
[0041] After the mechanical vibration transmission device of the waste heat boiler is installed (such as Fig.10 As shown in the figure, three boiler vibrating devices on the south side of the group hood facing the fire were upgraded and reconstructed. The three boiler vibrating devices were connected by the utility model, and the three were combined into one and controlled by one motor, which reduced the number of vibrating motors by two. Since there is no motor damage to repair, there is no need to maintain or replace the vibrating device, which saves 80,000 yuan in production costs each year. At the same time, the boiler vibrating transmission device is simple and practical in design, with low maintenance cost, and reduces the labor intensity of workers, making positive contributions to the sustainable development of the enterprise and the health and safety of employees.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions for the specific implementation of the present invention rather than to limit it. Ordinary technicians in the relevant technical field should understand that any equivalent substitution or obvious modification of the implementation mode of the present invention without changing its performance or use, without violating the purpose of the present invention, should be included in the scope of protection requested by the present invention.
Claims
1. A mechanical vibration transmission device for a waste heat boiler, characterized in that: The invention comprises a transmission shaft sleeve I connected with the output shaft of the electric reducer by a key, the transmission shaft sleeve I is connected with the transmission shaft sleeve II through a cross short shaft I, the transmission shaft sleeve II is connected with one end of the connecting long shaft, the other end of the connecting long shaft is connected with the transmission shaft sleeve III, the transmission shaft sleeve III is connected with the transmission shaft sleeve IV through a cross short shaft II, the transmission shaft sleeve IV is connected with the bearing seat assembly of the rapping device, the bearing seat assembly of the rapping device comprises a bearing seat, a sprocket, and a transmission shaft, there are two bearing seats, the transmission shaft is a stepped shaft with a thick middle part and thin ends, one end of the middle thick shaft section of the transmission shaft is provided with a sprocket keyway, The thick middle shaft section of the moving shaft is fixed in the bearing seat, the sprocket is fixed to the transmission drawer by means of a key connection, the thin shaft sections at both ends of the transmission shaft are respectively provided with connecting keyways so as to be connected to the transmission shaft sleeve by a key, and the sprocket is connected to the transmission wheel of the waste heat boiler rapping device through a chain; a keyway is provided at one end of the inner side of the transmission shaft sleeve for key connection with each transmission shaft shaft head, and a pin ear is provided at the other end, and a pin hole is provided on the pin ear; there is a pin hole at each end of the cross short shaft, which is connected to the transmission shaft sleeve by a pin; the connecting long shaft is a stepped shaft with a thick middle section and thin ends, and connecting keyways are respectively provided on the thin shaft sections at both ends of the connecting long shaft.
2. The mechanical vibration transmission device for waste heat boiler according to claim 1 is characterized in that: Two connecting keyways are arranged oppositely on the thin shaft section at each end of the transmission shaft.
3. The mechanical vibration transmission device for waste heat boiler according to claim 1 is characterized in that: Two connecting key grooves are arranged oppositely on the thin shaft section connecting each end of the long shaft.
4. The mechanical vibration transmission device for waste heat boiler according to claim 1 is characterized in that: One end of the inner side of the transmission shaft sleeve is oppositely provided with two key grooves.
5. The mechanical vibration transmission device for waste heat boiler according to claim 1 is characterized in that: The center lines of the pin holes at both ends of the cross short shaft are perpendicular to each other.