Energy-saving rice steaming machine
By automatically removing the partition and steaming tray and recycling heat, the problem of burns from high temperatures inside the rice steamer is solved, improving safety and environmental friendliness.
Patent Information
- Application Number
- CN202520153012.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing rice steamers have high internal temperatures after the rice is cooked, which can easily burn the arms of workers, reducing safety and environmental friendliness.
Through the cooperation of the cover, reinforcing ribs, motor, connecting plate, slider, curved column, first sealing ring and vertical plate, the partition and steaming tray are automatically moved out, reducing the contact between the human body and the inner wall of the rice steamer; the internal heat of the rice steamer is recycled by the circulation components of the gas collection cover, pressure relief pipe, exhaust pipe, second sealing ring, gas outlet pipe and gas outlet.
It effectively prevents staff from getting burned on their arms, improves the safety of the rice steamer, and enhances its environmental friendliness through heat recycling.
Smart Images
Figure CN223944201U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a rice steaming machine technical field, specifically is a kind of energy-saving rice steaming machine. BACKGROUND
[0002] Rice steaming machine refers to the large-scale kitchen baking equipment using electricity, gas heating, steaming rice, all materials are stainless steel material, usually made of 304 stainless steel.
[0003] The existing rice steaming machine when using, first staff opens sealed door, and steam tray with rice is placed on the baffle in the inside of rice steaming machine, after finishing, staff closes sealed door, and begins to steam rice;
[0004] However, the existing rice steaming machine rice is steamed, and staff needs to stretch arm part into the inside of rice steaming machine, and steam tray on baffle is taken out from the inside of rice steaming machine, so that when operating again, due to the high temperature in the inside of rice steaming machine, staff's arm part personnel mis-hits the inner wall of rice steaming machine, possibly scalds staff's arm position, thereby reduce the safety of existing rice steaming machine. UTILITY MODEL CONTENTS
[0005] In view of the deficiencies of prior art, the utility model provides a kind of energy-saving rice steaming machine, solve the problem that the existing rice steaming machine rice is steamed, due to the high temperature in the inside of rice steaming machine, staff's arm part personnel mis-hits the inner wall of rice steaming machine, possibly scalds staff's arm position, thereby reduce the safety of existing rice steaming machine.
[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of energy-saving rice steaming machine, including shell, the outer wall of the shell is hinged with sealed door, the bottom of the shell is installed with heating assembly, the inner wall of the shell is slidably connected with baffle, the moving device is provided with two groups, the outside of the shell is provided with moving device, the moving device includes: cover, fixedly connected to the side of the shell away from the sealed door;Motor, is fixedly connected to the inner wall of the cover by motor base;Connecting plate, is fixedly connected to the output shaft of the motor;Sliding block, is fixedly connected to the front of the connecting plate;Curved column, is slidably connected to the outer wall of the sliding block, and penetrates the shell, and is movably connected with the shell;Vertical plate, is fixedly connected to the end of the curved column away from the sliding block, and is fixedly connected to the outer wall of the baffle;Circulation assembly, is set to the inside of the shell;Wherein, the connecting plate is driven under the motor, so that the sliding block drives the curved column to move, so that the vertical plate drives the baffle to move, the baffle removes steam tray from rice steaming machine, avoids staff's arm position mis-hits the inner wall of rice steaming machine, and the heat in the inside of rice steaming machine is recycled by the circulation assembly, so that rice steaming machine is more environmentally friendly.
[0007] Preferably, the circulating assembly comprises: a gas collecting cover fixedly connected to the inner wall of the shell; an exhaust pipe communicated with the inner wall of the gas collecting cover and extending to the outside of the shell; an air outlet pipe communicated with the end of the exhaust pipe and the inner wall of the shell and extending to the inside of the shell; and an air outlet nozzle located below the air outlet pipe and communicated with the inner wall of the air outlet pipe; wherein the gas collecting cover concentrates the steam in the inside of the shell, the steam enters the exhaust pipe, then enters the air outlet pipe, and finally is discharged from the air outlet nozzle to the inside of the shell, thereby performing heat circulation and recycling the heat in the rice steamer, so that the rice steamer is more environmentally friendly.
[0008] Preferably, a pressure relief pipe is communicated with the top of the side of the shell away from the exhaust pipe, the pressure relief pipe extends to the outside of the shell, and a pressure relief valve is mounted on the outer wall of the pressure relief pipe.
[0009] Preferably, a reinforcing rib is fixedly connected between the shell and the cover.
[0010] Preferably, a first sealing ring is fixedly connected to the side of the shell close to the curved column, the inner wall of the first sealing ring is attached to the outer wall of the curved column, a second sealing ring is fixedly connected to the top of the shell, and the inner wall of the second sealing ring is attached to the outer wall of the exhaust pipe.
[0011] Beneficial effects
[0012] The energy-saving rice steamer has the following beneficial effects: through the cooperation between the cover, the reinforcing rib, the motor, the connecting plate, the sliding block, the curved column, the first sealing ring and the vertical plate, when the rice is cooked, the partition plate and the steaming tray are removed from the rice steamer, the contact between the arm part of the staff and the inner wall of the rice steamer is reduced, the problem that the arm part of the staff is scalded when the staff accidentally touches the inner wall of the rice steamer due to the high temperature in the rice steamer after the rice is cooked in the existing rice steamer is solved, and thus the safety of the existing rice steamer is improved.
[0013] Through the cooperation between the gas collecting cover, the pressure relief pipe, the pressure relief valve, the exhaust pipe, the second sealing ring, the air outlet pipe and the air outlet nozzle, the high-temperature steam in the rice steamer is recycled, the problem that a part of the high-temperature steam in the rice steamer is discharged through the exhaust port when the rice steamer is working, resulting in the waste of a part of the heat, and thus the environmental friendliness of the existing rice steamer is improved is solved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic view of the utility model;
[0015] Figure 2 It is Figure 1 a schematic view of the appearance.
[0016] Figure 3 For Figure 1 Structure diagram of middle shell, partition and exhaust pipe;
[0017] Figure 4 For Figure 1 Structure diagram of middle connecting plate, cover and vertical plate.
[0018] In the figure: 1, shell; 2, sealing door; 3, heating assembly; 4, partition; 5, moving device; 51, cover; 511, reinforcing rib; 52, motor; 53, connecting plate; 54, sliding block; 55, curved column; 551, first sealing ring; 56, vertical plate; 57, circulating assembly; 571, gas collecting cover; 5711, pressure relief pipe; 5712, pressure relief valve; 572, exhaust pipe; 5721, second sealing ring; 573, air outlet pipe; 574, air outlet nozzle. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0020] After the existing rice steamer steams the rice, due to the relatively high internal temperature of the rice steamer, the arm part of the staff may be scalded by accidentally touching the inner wall of the rice steamer, thereby reducing the safety of the existing rice steamer.
[0021] Therefore, the present application provides an energy-saving rice steamer, which realizes that when the rice is steamed, the partition and the steaming tray are moved out of the rice steamer, reducing the contact between the arm part of the staff and the inner wall of the rice steamer, solving the problem that the existing rice steamer steams the rice, due to the relatively high internal temperature of the rice steamer, the arm part of the staff may be scalded by accidentally touching the inner wall of the rice steamer, thereby reducing the safety of the existing rice steamer.
[0022] By connecting the parts in the case in sequence, the specific connection and operation sequence should be referred to the working principle, and the detailed connection means is the public technical knowledge in the art, and the working principle and process are mainly introduced below.
[0023] Example 1, by Figures 1-4It can be known that the energy-saving rice steamer in the case comprises a shell 1, the outer wall of the shell 1 is hinged with a sealing door 2, the staff opens the sealing door 2, fills the inside of a heating assembly 3 with clean water, after finishing, the staff places a rice grain steaming tray on a baffle 4, after finishing, closes the sealing door 2, the bottom of the shell 1 is provided with the heating assembly 3, starts the heating assembly 3, the heating assembly 3 heats the inside clean water into steam, steams the rice, the heating assembly 3 comprises a water tank, an opening and a heating plate, the water tank is fixedly connected to the inner wall of the shell 1, the top of the water tank is provided with the opening, the inner wall of the water tank is provided with the heating plate, the staff pours the clean water into the water tank through the opening, after finishing, starts the heating plate, the heating plate heats the clean water to form high-temperature steam, the high-temperature steam enters the inside of the shell 1 through the opening, and cooks the rice, the inner wall of the shell 1 is slidably connected with the baffle 4, the outside of the shell 1 is provided with a moving device 5, the moving device 5 is provided with two groups, the moving device 5 comprises: a cover body 51, which is fixedly connected to one side of the shell 1 away from the sealing door 2, the model of a motor 52 is selected according to actual requirements, and the motor 52 can meet the work, the motor 52 is fixedly connected to the inner wall of the cover body 51 through a motor seat, a connecting plate 53, which is fixedly connected to the output shaft of the motor 52, the motor 52 drives the connecting plate 53 to rotate, a sliding block 54, which is fixedly connected to the front of the connecting plate 53, the connecting plate 53 drives the sliding block 54 to rotate, a curved column 55, which is slidably connected to the outer wall of the sliding block 54, the sliding block 54 slides in the vertical slot in the inner wall of the curved column 55, so that the curved column 55 is driven to move, penetrates the shell 1, and is movably connected with the shell 1, the curved column 55 moves in the shell 1, a vertical plate 56, which is fixedly connected to one end of the curved column 55 away from the sliding block 54, the curved column 55 drives the vertical plate 56 to move, and is fixedly connected to the outer wall of the baffle 4, the vertical plates 56 on the two sides drive a plurality of baffles 4 to move, the baffles 4 slide in the limiting grooves in the two sides of the shell 1, the baffle 4 drives the front end of the steaming tray to move out of the rice steamer, after finishing, the motors 52 on the two sides are stopped at the same time, the staff takes out the steaming tray, when the sliding block 54 moves from the right end of the connecting plate 53 to the left end, a part of the baffle 4 moves out of the rice steamer, when the sliding block 54 moves from the left end of the connecting plate 53 to the right end, the baffle 4 returns to the inside of the rice steamer, a circulating assembly 57, which is arranged in the inside of the shell 1, wherein the connecting plate 53 is driven by the motor 52, so that the sliding block 54 drives the curved column 55 to move, so that the vertical plate 56 drives the baffle 4 to move, the baffle 4 moves a part of the steaming tray out of the rice steamer, avoids that the arm position of the staff accidentally bumps the inner wall of the rice steamer, and the heat in the inside of the rice steamer is circularly used through the circulating assembly 57, so that the rice steamer is more environmentally friendly;
[0024] In the implementation process, it is worth pointing out that the motor 52 model is selected according to actual needs, which meets the work. First, the worker opens the sealing door 2, fills the inside of the heating assembly 3 with clean water, and then places the steamed rice tray containing rice on the partition plate 4. After that, the worker closes the sealing door 2 and starts the heating assembly 3. The heating assembly 3 heats the water inside to steam, which steams the rice. The heating assembly 3 includes a water tank, an opening, and a heating plate. The water tank is fixedly connected to the inner wall of the shell 1. An opening is formed in the top of the water tank. The inner wall of the water tank is provided with a heating plate. The worker pours clean water into the water tank through the opening. After that, the heating plate is started to heat the water to form high-temperature steam. The high-temperature steam enters the inside of the shell 1 through the opening to steam the rice. When the rice is cooked, the worker opens the sealing door 2 again and starts the two motors 52. The motors 52 drive the connecting plate 53 to rotate, which drives the sliding block 54 to rotate. The sliding block 54 slides in the vertical slot on the inner wall of the curved column 55, thereby driving the curved column 55 to move. The curved column 55 moves in the shell 1, which drives the vertical plate 56 to move. The two vertical plates 56 drive the plurality of partition plates 4 to move. The partition plates 4 slide in the limiting grooves on both sides of the shell 1. The partition plates 4 drive the front end of the steamed rice tray to move out of the rice steamer. After that, the two motors 52 are stopped at the same time. The worker takes out the steamed rice tray. After that, the two motors 52 are started at the same time again to drive the partition plates 4 to return to the inside of the rice steamer. When the sliding block 54 moves from the right end of the connecting plate 53 to the left end, a part of the partition plates 4 moves out of the rice steamer. When the sliding block 54 moves from the left end of the connecting plate 53 to the right end, the partition plates 4 return to the inside of the rice steamer. The worker takes out the steamed rice tray;
[0025] Further, the circulation assembly 57 includes a gas collector 571 fixedly connected to the inner wall of the shell 1, an exhaust pipe 572 communicated with the inner wall of the gas collector 571, a delivery pump outside the exhaust pipe 572 started when the rice steamer works. At this time, the steam in the inside of the shell 1 enters the gas collector 571, and then enters the exhaust pipe 572 and extends to the outside of the shell 1. An air outlet pipe 573 is communicated with the end of the exhaust pipe 572. The steam in the exhaust pipe 572 enters the air outlet pipe 573 and is communicated with the inner wall of the shell 1 and extends to the inside of the shell 1. An air outlet nozzle 574 is located below the air outlet pipe 573. Finally, the high-temperature steam in the inside of the shell 1 is discharged through the air outlet nozzle 574 and reused, and is communicated with the inner wall of the air outlet pipe 573. The gas collector 571 collects the steam in the inside of the shell 1. The steam enters the exhaust pipe 572, then enters the air outlet pipe 573, and finally is discharged from the air outlet nozzle 574 to the inside of the shell 1 for heat circulation, which circulates the heat in the inside of the rice steamer and makes the rice steamer more environmentally friendly.
[0026] In the implementation process, it is worth pointing out that, when the rice steamer is working, the delivery pump outside the exhaust pipe 572 is started, at this time the steam in the shell 1 enters the gas cover 571, the steam enters the exhaust pipe 572, the steam in the exhaust pipe 572 enters the exhaust pipe 573, and finally is discharged to the inside of the shell 1 through the exhaust nozzle 574, so that the high-temperature steam in the shell 1 is recycled, the rice steamer is more environmentally friendly, and after the rice is cooked, the delivery pump on the exhaust pipe 572 is stopped;
[0027] Further, the top of the side of the shell 1 away from the exhaust pipe 572 is communicated with a pressure relief pipe 5711, the pressure relief pipe 5711 extends to the outside of the shell 1, the steam in the rice steamer is discharged through the pressure relief pipe 5711 to adjust the pressure in the rice steamer, and the outer wall of the pressure relief pipe 5711 is provided with a pressure relief valve 5712, when the pressure in the rice steamer exceeds a predetermined value, the pressure relief valve 5712 is automatically opened, the type of the pressure relief valve 5712 is selected according to actual needs, and the work is satisfied;
[0028] In the implementation process, it is worth pointing out that, when the rice steamer is working, the delivery pump outside the exhaust pipe 572 is started, at this time the steam in the shell 1 enters the gas cover 571, the steam enters the exhaust pipe 572, the steam in the exhaust pipe 572 enters the exhaust pipe 573, and finally is discharged to the inside of the shell 1 through the exhaust nozzle 574, so that the high-temperature steam in the shell 1 is recycled, the rice steamer is more environmentally friendly, and after the rice is cooked, the delivery pump on the exhaust pipe 572 is stopped;
[0029] Specific, first staff will seal door 2 open, to the inside of heating assembly 3 full of clean water, after completion, the staff will be cooked with rice steaming tray on the partition 4, after completion, close the seal door 2, start heating assembly 3, heating assembly 3 will be heated to the inside of the clean water steam, rice steaming, at this time start exhaust pipe 572 outside of the delivery pump, at this time the steam inside the shell 1 into the gas hood 571, steam into the exhaust pipe 572, exhaust pipe 572 in the steam into the air pipe 573, finally through the air outlet 574 re-discharged to the inside of the shell 1, make the high temperature steam inside the shell 1 for recycling, when the pressure inside the rice steamer exceeds the predetermined value, pressure relief valve 5712 is automatically opened, the steam inside the rice steamer through the pressure relief pipe 5711 discharge, to adjust the pressure inside the rice steamer, when the rice is cooked, the staff will open the seal door 2 again, start the two side motor 52, motor 52 drive connecting plate 53 rotation, connecting plate 53 drive sliding block 54 rotation, sliding block 54 in the vertical slot on the inner wall of the curved column 55 sliding, thus drive curved column 55 movement, curved column 55 in the shell 1 movement, curved column 55 drive vertical plate 56 movement, both sides of the vertical plate 56 drive multiple partition 4 movement, partition 4 in the limiting groove in the shell 1 both sides sliding, partition 4 drive the front end of the steaming tray out of the rice steamer, after completion, stop the two side motor 52 at the same time, the staff will take out the steaming tray, after completion, start the two side motor 52 at the same time again, thus drive the partition 4 back to the inside of the rice steamer.
[0030] From the embodiments 2, 3 and 4, it can be seen that the reinforcing rib 511 is fixedly connected between the shell 1 and the cover body 51, the reinforcing rib 511 increases the connecting area between the cover body 51 and the shell 1, and improves the overall strength of the cover body 51. Figure 1 、 3 From the embodiments 2, 3 and 4, it can be seen that the reinforcing rib 511 is fixedly connected between the shell 1 and the cover body 51, the reinforcing rib 511 increases the connecting area between the cover body 51 and the shell 1, and improves the overall strength of the cover body 51.
[0031] In the specific implementation process, it is worth pointing out that the reinforcing rib 511 increases the connecting area between the cover body 51 and the shell 1, and improves the overall strength of the cover body 51.
[0032] Further, the first sealing ring 551 is fixedly connected to the shell 1 near the curved column 55, the first sealing ring 551 increases the sealing between the shell 1 and the curved column 55, the inner wall of the first sealing ring 551 is attached to the outer wall of the curved column 55, the second sealing ring 5721 is fixedly connected to the top of the shell 1, the second sealing ring 5721 increases the sealing between the shell 1 and the exhaust pipe 572, the inner wall of the second sealing ring 5721 is attached to the outer wall of the exhaust pipe 572.
[0033] In the implementation process, it is worth pointing out that the first sealing ring 551 increases the sealing between the shell 1 and the curved column 55, and the second sealing ring 5721 increases the sealing between the shell 1 and the exhaust pipe 572, thereby improving the overall sealing of the rice steaming machine.
[0034] Specifically, the reinforcing rib 511 increases the connection area between the cover body 51 and the shell 1, improves the overall strength of the cover body 51, the first sealing ring 551 increases the sealing between the shell 1 and the curved column 55, and the second sealing ring 5721 increases the sealing between the shell 1 and the exhaust pipe 572, thereby improving the overall sealing of the rice steaming machine.
[0035] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitation. The statement "including a limited element" does not exclude the existence of another identical element in the process, method, article or equipment including the element.
[0036] In the utility model, unless otherwise expressly provided and limited, the terms "installation", "setting", "connection", "fixing", "screw connection" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise expressly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning of the specific circumstances for ordinary skilled in the art.
[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An energy-saving rice steaming machine comprising a housing (1), characterized in that: The outer wall of the shell (1) is hinged with a sealing door (2), the bottom of the shell (1) is provided with a heating assembly (3), the inner wall of the shell (1) is slidably connected with a partition plate (4), the outer side of the shell (1) is provided with a moving device (5), the moving device (5) is provided with two groups, and the moving device (5) comprises: The cover body (51) is fixedly connected to the side of the shell (1) away from the sealing door (2); The motor (52) is fixedly connected to the inner wall of the cover body (51) through the motor seat; The connecting plate (53) is fixedly connected to the output shaft of the motor (52); The slider (54) is fixedly connected to the front face of the connecting plate (53); The curved column (55) is slidably connected to the outer wall of the slider (54), penetrates through the shell (1), and is movably connected with the shell (1); The vertical plate (56) is fixedly connected to one end of the curved column (55) away from the slider (54), and is fixedly connected to the outer wall of the partition plate (4); The circulating assembly (57) is arranged in the inside of the shell (1); Wherein, the connecting plate (53) drives the slider (54) to move under the drive of the motor (52), so that the curved column (55) moves, thereby the vertical plate (56) drives the partition plate (4) to move, the partition plate (4) moves the steaming tray out of the steaming rice machine, avoids the arm position of the staff from accidentally touching the inner wall of the steaming rice machine, and the heat in the steaming rice machine is recycled through the circulating assembly (57), so that the steaming rice machine is more environmentally friendly.
2. The energy-saving rice steaming machine according to claim 1, characterized in that: The circulating assembly (57) comprises: The gas collecting cover (571) is fixedly connected to the inner wall of the shell (1); The exhaust pipe (572) is communicated with the inner wall of the gas collecting cover (571), and extends to the outside of the shell (1); The air outlet pipe (573) is communicated with the end of the exhaust pipe (572), and is communicated with the inner wall of the shell (1), and extends to the inside of the shell (1); The air outlet pipe (573) is communicated with the end of the exhaust pipe (572), and is communicated with the inner wall of the shell (1), and extends to the inside of the shell (1); The air outlet pipe (573) is communicated with the end of the exhaust pipe (572), and is communicated with the inner wall of the shell (1), and extends to the inside of the shell (1); 3. The energy-saving rice steaming machine according to claim 1, characterized in that: Wherein, the gas collecting cover (571) concentrates the steam in the shell (1), the steam enters the exhaust pipe (572), then enters the air outlet pipe (573), and finally is discharged into the inside of the shell (1) from the air outlet (574), and is recycled, so that the heat in the steaming rice machine is recycled, and the steaming rice machine is more environmentally friendly.
4. The energy-saving rice steaming machine according to claim 1, characterized in that: The outer wall of the shell (1) is hinged with a sealing door (2), the bottom of the shell (1) is provided with a heating assembly (3), the inner wall of the shell (1) is slidably connected with a partition plate (4), the outer side of the shell (1) is provided with a moving device (5), the moving device (5) is provided with two groups, and the moving device (5) comprises: The cover body (51) is fixedly connected to the side of the shell (1) away from the sealing door (2); The motor (52) is fixedly connected to the inner wall of the cover body (51) through the motor seat; The connecting plate (53) is fixedly connected to the output shaft of the motor (52); The slider (54) is fixedly connected to the front face of the connecting plate (53); The curved column (55) is slidably connected to the outer wall of the slider (54), penetrates through the shell (1), and is movably connected with the shell (1); The vertical plate (56) is fixedly connected to one end of the curved column (55) away from the slider (54), and is fixedly connected to the outer wall of the partition plate (4); The circulating assembly (57) is arranged in the inside of the shell (1); Wherein, the connecting plate (53) drives the slider (54) to move under the drive of the motor (52), so that the curved column (55) moves, thereby the vertical plate (56) drives the partition plate (4) to move, the partition plate (4) moves the steaming tray out of the steaming rice machine, avoids the arm position of the staff from accidentally touching the inner wall of the steaming rice machine, and the heat in the steaming rice machine is recycled through the circulating assembly (57), so that the steaming rice machine is more environmentally friendly.
5. The energy-saving rice steaming machine according to claim 1, characterized in that: The shell (1) is fixedly connected with a first sealing ring (551) near one side of the curved column (55), the inner wall of the first sealing ring (551) is attached to the outer wall of the curved column (55), the top of the shell (1) is fixedly connected with a second sealing ring (5721), and the inner wall of the second sealing ring (5721) is attached to the outer wall of the exhaust pipe (572).