Combustion control device for garbage incineration grate furnace

Abstract

The utility model discloses a combustion control device for a garbage incinerator grate furnace, which comprises a fan, a blowpipe and a bypass cold air pipeline, the fan is communicated with the blowpipe and the bypass cold air pipeline, one side of the blowpipe close to the fan is provided with a heating unit, and the other side of the blowpipe is provided with a first air outlet pipe and a second air outlet pipe which are respectively communicated with the front section and the middle section of a combustion chamber; a third air outlet pipe and a fourth air outlet pipe are arranged on the other side of the bypass cold air pipeline, the third air outlet pipe is communicated with the second air outlet pipe, and the fourth air outlet pipe is communicated with the rear section of the combustion chamber; and an adjusting valve is arranged on each air outlet pipe. Controllable air blowing is independently arranged for the front section (drying section), the middle section (combustion section) and the rear section (after-combustion section) of the combustion chamber, the primary air temperature of the drying section is increased, the garbage drying effect is better, the primary air temperature of the combustion section can be adjusted according to the combustion condition, and therefore the combustion intensity is controlled, and the deslagging temperature of the after-combustion section can be effectively reduced; and the boiler efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage incineration, in particular to a combustion control device for a garbage incineration grate furnace. Background Art

[0002] A waste incinerator is a facility designed specifically to treat municipal solid waste. Its primary function is to convert waste into ash and flue gas through high-temperature combustion. This process aims to reduce the volume of waste and its organic content, thereby minimizing its environmental impact. Incinerators are typically equipped with flue gas purification systems to treat post-combustion exhaust gases and minimize negative impacts on air quality.

[0003] Primary air plays a critical role in waste incinerators. It is the initial air entering the furnace, primarily providing oxygen to promote the waste combustion process. This air is evenly distributed into the furnace via fans, air ducts, and nozzles, ensuring thorough mixing of waste and oxygen, improving combustion efficiency, and reducing harmful emissions. The entry of primary air also effectively regulates the temperature and combustion reaction rate within the furnace, ensuring optimal incineration conditions and maximizing energy recovery. Therefore, optimizing and controlling primary air input is crucial to the operational efficiency and environmental impact of waste incineration facilities.

[0004] However, if the primary air is still supplied by hot air, the garbage in the main combustion zone will burn too violently, and problems such as grate overheating and serious coking in the furnace have gradually been exposed, resulting in damage to the grate. Therefore, this patent proposes a new combustion concept to control the combustion intensity of the main combustion zone, effectively solve the above problems, and reduce production and operation costs. Utility Model Content

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A combustion control device for a garbage incineration grate furnace comprises a fan, a blow pipe, and a bypass cold air duct, wherein the fan outlet is connected to the blow pipe and the bypass cold air duct, a heating unit is provided on the blow pipe close to the fan side, a first air outlet pipe and a second air outlet pipe are provided on the other side of the blow pipe, which are connected to the front section and the middle section of the combustion chamber respectively; a third air outlet pipe and a fourth air outlet pipe are provided on the other side of the bypass cold air duct, wherein the third air outlet pipe is connected to the second air outlet pipe, and the fourth air outlet pipe is connected to the rear section of the combustion chamber; regulating valves are provided on the first air outlet pipe, the second air outlet pipe, the third air outlet pipe, and the fourth air outlet pipe.

[0007] As a preferred embodiment of the combustion control device for a waste incineration grate furnace provided by the present invention, the heating unit includes a primary air primary heating mechanism and a primary air secondary heating mechanism, the primary air primary heating mechanism is used to perform primary heating on the primary air, and the output end of the primary air primary heating mechanism is connected to a primary air secondary heating mechanism for performing secondary heating on the primary air;

[0008] The primary air and primary heating mechanism includes a heating box, an air inlet, an air outlet, a primary heating component and a water vapor separation component. One side of the heating box is fixedly connected to the air inlet, and the side of the heating box away from the air inlet is fixedly connected to the air outlet.

[0009] As a preferred embodiment of the combustion control device for a waste incineration grate furnace provided by the utility model, the heating component includes a water flow diverter plate, a water flow collecting plate, a heating copper tube and heat-absorbing fins. The middle part of the heating box is fixedly connected to the water flow diverter plate, and the middle part of the heating box away from the water flow diverter plate is fixedly connected to the water flow collecting plate. The water flow diverter plate and the middle part of the water flow collecting plate are connected to each other and a heating copper tube is provided. The surface of the heating copper tube is fixedly connected to a plurality of heat-absorbing fins in a linear array.

[0010] As a preferred embodiment of the combustion control device for a waste incineration grate furnace provided by the utility model, the water vapor separation component includes a water outlet pipe, a water vapor diversion box, an exhaust pipe and a drain pipe. The water flow collecting plate is fixedly connected to the side away from the heating copper tube with the water outlet pipe, and the water outlet pipe extends to the outside of the heating box. The end of the water outlet pipe away from the water flow collecting plate is fixedly connected to the water vapor diversion box, the top of the water vapor diversion box is fixedly connected to the exhaust pipe, and the bottom end of the water vapor diversion box is fixedly connected to the drain pipe.

[0011] As a preferred embodiment of the combustion control device for a waste incineration grate furnace provided by the utility model, the primary air secondary heating mechanism includes a water flow booster pump, a secondary heating water pipe, a secondary heating component and a water temperature control component, and the end of the drain pipe away from the water vapor diversion box is fixedly connected to the secondary heating water pipe, and the surface of the secondary heating water pipe is fixedly connected to the water flow booster pump.

[0012] As a preferred embodiment of the combustion control device for a waste incineration grate furnace provided by the present invention, the secondary heating assembly includes a water flow booster pump, a secondary heating water pipe, a heating tank and a shunt heat dissipation pipe. The surface of the secondary heating water pipe is fixedly connected to the heating tank, and the surface of the secondary heating water pipe is fixedly connected to a plurality of shunt heat dissipation pipes in a circular array, and the air inlet passes through the middle of the heating tank at one end away from the heating box.

[0013] As a preferred embodiment of the combustion control device for a waste incineration grate furnace provided by the present invention, the water temperature control component includes a heat exchange guide pipe, a plate heat exchanger, a water inlet pipe, a cold water supply pipe and a solenoid valve. The end of the secondary heating water pipe away from the drain pipe is fixedly connected to the heat exchange guide pipe, the end of the heat exchange guide pipe away from the secondary heating water pipe is fixedly connected to the plate heat exchanger, the output end of the plate heat exchanger is fixedly connected to the water inlet pipe, the end of the water inlet pipe away from the plate heat exchanger is fixedly connected to the surface of the water flow diverter plate, the surface of the water inlet pipe is fixedly connected to the cold water supply pipe, and the surface of the cold water supply pipe is fixedly connected to the solenoid valve.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model increases the primary air temperature of the drying section by 10-20°C by separately setting controllable air blowing for the front section (drying section), middle section (combustion section) and rear section (burnout section) of the combustion chamber, thereby achieving better garbage drying effect: the primary air temperature of the combustion section can be adjusted according to the combustion conditions, thereby controlling the combustion intensity, ensuring that the grate pieces do not overheat, alleviating the coking condition of the furnace, reducing steam consumption, and increasing power generation: the slag discharge temperature of the burnout section can be effectively reduced, thereby improving boiler efficiency, effectively reducing the wind resistance of the entire system, and reducing the power consumption of the primary fan.

[0016] The utility model provides a combustion control device for a garbage incineration grate furnace, which provides a primary air and primary heating mechanism, and heats the water inside the heating box through the garbage incinerator, thereby forming a heat exchange with the air entering the heating box, and supplies air to the garbage incinerator through the heated air, thereby achieving an improvement in thermal efficiency. At the same time, the plate heat exchanger and the cold water supply pipe at the rear of the device respectively control the water temperature through heat exchange and direct water addition, thereby more accurately controlling the problem of air heating, heating the air to a suitable air supply temperature, and further increasing the thermal efficiency of the garbage incinerator.

[0017] The utility model provides a combustion control device for a garbage incineration grate furnace, which heats the air through a primary air secondary heating mechanism assisted by a primary air primary heating mechanism, thereby improving the efficiency of air heating and avoiding heat loss, thereby further increasing the overall thermal efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1A schematic diagram of the system structure of the combustion control device for a waste incineration grate furnace provided in this application;

[0020] Figure 2 This is a schematic diagram of the overall structure of the combustion control device for a garbage incineration grate furnace provided in this application;

[0021] Figure 3 This is a structural diagram of the primary air and primary heating mechanism of the combustion control device for a garbage incineration grate furnace provided in this application;

[0022] Figure 4 A schematic diagram of the internal structure of a heating box for a waste incineration grate furnace combustion control device provided in this application;

[0023] Figure 5 This is a schematic diagram of the internal structure of the heating tank in the primary air secondary heating mechanism of the garbage incineration grate furnace combustion control device provided in this application;

[0024] Figure 6 This is a schematic structural diagram of the heat exchange guide tube of the combustion control device for a garbage incineration grate furnace provided in this application.

[0025] The markings in the figure are as follows:

[0026] 1. Primary air primary heating mechanism; 2. Primary air secondary heating mechanism; 3. Heating box; 4. Air inlet; 5. Air outlet; 6. Water flow diverter plate; 7. Water flow collecting plate; 8. Heating copper tube; 9. Heat absorbing fin; 10. Water outlet pipe; 11. Water vapor diverter box; 12. Exhaust pipe; 13. Drain pipe; 14. Water flow booster pump; 15. Secondary heating water pipe; 16. Heating tank; 17. Diverter heat dissipation pipe; 18. Heat exchange guide pipe; 19. Plate heat exchanger; 20. Water inlet pipe; 21. Cold water supply pipe; 22. Solenoid valve; 23. Fan; 24. Heating unit; 25. First regulating valve; 26. Second regulating valve; 27. Third regulating valve, 28. Fourth regulating valve; 29. ​​Fifth regulating valve. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] As described in the background technology, if the primary air is still supplied by hot air, the garbage in the main combustion zone will burn too violently, and problems such as grate overheating and serious coking in the furnace have gradually been exposed, resulting in damage to the grate. Therefore, this patent proposes a new combustion concept to control the combustion intensity of the main combustion zone, effectively solve the above problems, and reduce production and operation costs.

[0029] In order to solve this technical problem, the utility model provides a combustion control device for a garbage incineration grate furnace, which is applied to primary air control of garbage incineration.

[0030] Specifically, please refer to Figure 1 The control device includes a fan 23, a blowing pipe f1, and a bypass cold air duct f2. The air outlet of the fan 23 is connected to the blowing pipe f1 and the bypass cold air duct f2. A heating unit 24 is provided on the side of the blowing pipe f1 near the fan 23. A first air outlet duct f11 and a second air outlet duct f12 are provided on the other side of the blowing pipe f1, which are connected to the front and middle sections of the combustion chamber, respectively. A third air outlet duct f21 and a fourth air outlet duct f22 are provided on the other side of the bypass cold air duct f2. The third air outlet duct f21 is connected to the second air outlet duct f12, and the fourth air outlet duct f22 is connected to the rear section of the combustion chamber. Regulating valves are provided on the first air outlet duct f11, the second air outlet duct f12, the third air outlet duct f21, and the fourth air outlet duct f22. The regulating valves can be adjusted manually or electrically.

[0031] Specifically, the first air outlet duct f11, the second air outlet duct f12, and the fourth air outlet duct f22 are equipped with a fourth regulating valve 28, a fifth regulating valve 29, and a third regulating valve 27. A second regulating valve 26 is installed on the blowing pipe f1 between the first and second air outlet ducts f11 and f12. A first regulating valve 25 is installed on the bypass cold air duct f2 at the front end of the third air outlet duct f21. Adjusting the valve openings adjusts the air volume outflowing from the first, second, and fourth air outlet ducts f11, f12, and f22. Adjusting the openings of the second regulating valve 26 and the first regulating valve 25 adjusts the ratio of hot air to cold air flowing into the second air outlet duct f12, thereby adjusting the outlet air temperature. A regulating valve may also be installed on the third air outlet duct f21.

[0032] Furthermore, a trumpet-shaped diffusion structure may be provided at the air outlets of the first air outlet pipe f11, the second air outlet pipe f12, and the fourth air outlet pipe f22.

[0033] Specifically, please refer to Figure 2-Figure 6 The heating unit (24) includes a primary air primary heating mechanism 1 and a primary air secondary heating mechanism 2, the primary air primary heating mechanism 1 is used to perform primary heating on the primary air, and the output end of the primary air primary heating mechanism 1 is connected to the primary air secondary heating mechanism 2 for performing secondary heating on the primary air;

[0034] The primary air and primary heating mechanism 1 includes a heating box 3, an air inlet 4, an air outlet 5, a primary heating component and a water vapor separation component. The air inlet 4 is fixedly connected to one side of the heating box 3, and the air outlet 5 is fixedly connected to the side of the heating box 3 away from the air inlet 4.

[0035] The utility model provides a combustion control device for a garbage incineration grate furnace. By setting a primary air and primary heating mechanism 1, the garbage incinerator heats the water inside the heating box 3, which can then form a heat exchange with the air entering the heating box 3. The heated air is used to supply air to the garbage incinerator, thereby achieving an improvement in thermal efficiency. At the same time, the plate heat exchanger 19 and the cold water supply pipe 21 at the rear of the device respectively control the water temperature through heat exchange and direct water addition, thereby more accurately controlling the problem of air heating, heating the air to a suitable air supply temperature, and further increasing the thermal efficiency of the garbage incinerator.

[0036] Specifically, the heating unit 24 includes a primary air heating mechanism 1 and a secondary primary air heating mechanism 2. The primary air heating mechanism 1 is used to heat the primary air once, and the output end of the primary air heating mechanism 1 is connected to the secondary primary air heating mechanism 2 for secondary heating the primary air.

[0037] The primary air and primary heating mechanism 1 includes a heating box 3, an air inlet 4, an air outlet 5, a primary heating component and a water vapor separation component. The air inlet 4 is fixedly connected to one side of the heating box 3, and the air outlet 5 is fixedly connected to the side of the heating box 3 away from the air inlet 4.

[0038] Specifically, the heating assembly includes a water flow diversion plate 6, a water flow collecting plate 7, a heating copper tube 8 and a heat-absorbing fin 9. The water flow diversion plate 6 is fixedly connected to the middle of the heating box 3, and the water flow collecting plate 7 is fixedly connected to the side of the middle of the heating box 3 away from the water flow diversion plate 6. The middle of the water flow diversion plate 6 and the water flow collecting plate 7 are connected and a heating copper tube 8 is provided. The surface of the heating copper tube 8 is fixedly connected to a plurality of heat-absorbing fins 9 in a linear array.

[0039] Specifically, the water vapor separation component includes a water outlet pipe 10, a water vapor diversion box 11, an exhaust pipe 12 and a drain pipe 13. The water outlet pipe 10 is fixedly connected to the side of the water flow collecting plate 7 away from the heating copper tube 8. The water outlet pipe 10 extends to the outside of the heating box 3. The end of the water outlet pipe 10 away from the water flow collecting plate 7 is fixedly connected to the water vapor diversion box 11. The top of the water vapor diversion box 11 is fixedly connected to the exhaust pipe 12, and the bottom end of the water vapor diversion box 11 is fixedly connected to the drain pipe 13.

[0040] Specifically, the primary air secondary heating mechanism 2 includes a water flow booster pump 14, a secondary heating water pipe 15, a secondary heating component and a water temperature control component. The end of the drain pipe 13 away from the water vapor diversion box 11 is fixedly connected to the secondary heating water pipe 15, and the surface of the secondary heating water pipe 15 is fixedly connected to the water flow booster pump 14.

[0041] Specifically, the secondary heating assembly includes a water booster pump 14, a secondary heating water pipe 15, a heating tank 16 and a shunt heat dissipation pipe 17. The surface of the secondary heating water pipe 15 is fixedly connected to the heating tank 16. The surface of the secondary heating water pipe 15 is fixedly connected to multiple shunt heat dissipation pipes 17 in a circular array. The air inlet 4 passes through the middle of the heating tank 16 at one end away from the heating box 3.

[0042] Specifically, the water temperature control component includes a heat exchange guide pipe 18, a plate heat exchanger 19, a water inlet pipe 20, a cold water supply pipe 21 and a solenoid valve 22. The end of the secondary heating water pipe 15 away from the drain pipe 13 is fixedly connected to the heat exchange guide pipe 18, the end of the heat exchange guide pipe 18 away from the secondary heating water pipe 15 is fixedly connected to the plate heat exchanger 19, the output end of the plate heat exchanger 19 is fixedly connected to the water inlet pipe 20, the end of the water inlet pipe 20 away from the plate heat exchanger 19 is fixedly connected to the surface of the water flow diversion plate 6, the surface of the water inlet pipe 20 is fixedly connected to the cold water supply pipe 21, and the surface of the cold water supply pipe 21 is fixedly connected to the solenoid valve 22.

[0043] Through the above structural design, the primary air duct is optimized, and a bypass cold air system is added to the heater system 24. A first regulating valve 25 is designed on the air duct, and part of the primary air is directly sent to the combustion section. A second regulating valve 26 is installed on the air duct between the drying section and the combustion section to adjust the hot air volume to control the primary air temperature of the combustion section, thereby controlling the combustion intensity. The primary air of the burnout section is directly supplied by the bypass cold air system and controlled by the third regulating valve 27. This air duct design can effectively improve the combustion condition. When the device is used, the solenoid valve 22 is first opened to supply water to the inside of the water inlet pipe 20 through the cold water supply pipe 21. The water inlet pipe 20 supplies water to the inside of the water flow diversion plate 6 and diverts it to the heating copper tube 8. At this time, the water flow inside the heating copper tube 8 can be heated by heating the heating box 3. The heated water enters the water flow collecting plate 7 and enters the water vapor diversion box 11 through the outlet pipe 10. The water vapor formed by heating is discharged from the exhaust pipe 12 to the steam pipe. The water flows through the drain pipe 13 into the secondary heating water pipe 15, and is transported to the inside of the heat exchange guide pipe 18 by the pressure of the water booster pump 14. When the water flows in the secondary heating water pipe 15, it is diverted by the diversion heat dissipation pipe 17 to heat the inside of the heating tank 16. The water flows through the heat exchange guide pipe 18 and enters the plate heat exchanger 19. At this time, the heat exchanger exchanges heat with the heated water flow. After completion, it enters the water flow diversion plate 6 through the water inlet pipe 20 to complete the cycle. At this time, air enters through the air inlet 4 The water enters the interior of the heating tank 16 for initial heating, and then enters the interior of the heating box 3 again through the air inlet 4, thereby completing the secondary heating of the air. After completion, it is supplied to the waste incinerator through the air outlet 5. The water flows back to the water flow diverter plate 6 through the water inlet pipe 20. The front plate heat exchanger 19 can monitor the water temperature in real time. If the temperature is too high, the power of the plate heat exchanger 19 itself can be increased, or the solenoid valve 22 can be opened to replenish water and cool the water inlet pipe 20 through the cold water supply pipe 21.

[0044] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention is prohibited.

Claims

1. A combustion control device for a garbage incineration grate furnace, characterized in that: include: A fan (23), a blowing pipe (f1), and a bypass cold air duct (f2); the air outlet of the fan (23) is connected to the blowing pipe (f1) and the bypass cold air duct (f2); a heating unit (24) is provided on the side of the blowing pipe (f1) close to the fan (23); a first air outlet pipe (f11) and a second air outlet pipe (f12) are provided on the other side of the blowing pipe (f1), which are connected to the front section and the middle section of the combustion chamber respectively; a third air outlet pipe (f21) and a fourth air outlet pipe (f22) are provided on the other side of the bypass cold air duct (f2), wherein the third air outlet pipe (f21) is connected to the second air outlet pipe (f12), and the fourth air outlet pipe (f22) is connected to the rear section of the combustion chamber; regulating valves are provided on the first air outlet pipe (f11), the second air outlet pipe (f12), the third air outlet pipe (f21), and the fourth air outlet pipe (f22).

2. A combustion control device for a garbage incineration grate furnace according to claim 1, characterized in that: The heating unit (24) comprises a primary air primary heating mechanism (1) and a primary air secondary heating mechanism (2), wherein the primary air primary heating mechanism (1) is used for performing primary heating on the primary air, and the output end of the primary air primary heating mechanism (1) is connected to the primary air secondary heating mechanism (2) for performing secondary heating on the primary air; the primary air primary heating mechanism (1) comprises a heating box (3), an air inlet (4), an air outlet (5), a primary heating component and a water vapor separation component, wherein one side of the heating box (3) is fixedly connected to the air inlet (4), and the side of the heating box (3) away from the air inlet (4) is fixedly connected to the air outlet (5).

3. The combustion control device for a garbage incineration grate furnace according to claim 2, characterized in that: The heating assembly comprises a water flow diverter plate (6), a water flow collecting plate (7), a heating copper tube (8) and heat absorbing fins (9); the middle of the heating box (3) is fixedly connected to the water flow diverter plate (6); the middle of the heating box (3) away from the water flow diverter plate (6) is fixedly connected to the water flow collecting plate (7); the middle of the water flow diverter plate (6) and the water flow collecting plate (7) are connected and provided with a heating copper tube (8); the surface of the heating copper tube (8) is fixedly connected to a plurality of heat absorbing fins (9) in a linear array.

4. A combustion control device for a garbage incineration grate furnace according to claim 3, characterized in that: The water vapor separation assembly comprises a water outlet pipe (10), a water vapor diversion box (11), an exhaust pipe (12) and a drain pipe (13); the water outlet pipe (10) is fixedly connected to a side of the water flow collecting plate (7) away from the heating copper tube (8); the water outlet pipe (10) extends to the outside of the heating box (3); the end of the water outlet pipe (10) away from the water flow collecting plate (7) is fixedly connected to the water vapor diversion box (11); the top end of the water vapor diversion box (11) is fixedly connected to the exhaust pipe (12); and the bottom end of the water vapor diversion box (11) is fixedly connected to the drain pipe (13).

5. The combustion control device for a garbage incineration grate furnace according to claim 4, characterized in that: The primary air secondary heating mechanism (2) comprises a water flow booster pump (14), a secondary heating water pipe (15), a secondary heating component and a water temperature control component; one end of the drain pipe (13) away from the water vapor diversion box (11) is fixedly connected to the secondary heating water pipe (15); and the surface of the secondary heating water pipe (15) is fixedly connected to the water flow booster pump (14).

6. The combustion control device for a garbage incineration grate furnace according to claim 5, characterized in that: The secondary heating assembly comprises a water flow booster pump (14), a secondary heating water pipe (15), a heating tank (16) and a shunt heat dissipation pipe (17); the surface of the secondary heating water pipe (15) is fixedly connected to the heating tank (16); the surface of the secondary heating water pipe (15) is fixedly connected to a plurality of shunt heat dissipation pipes (17) in a circular array; and the end of the air inlet (4) away from the heating box (3) passes through the middle of the heating tank (16).

7. The combustion control device for a garbage incineration grate furnace according to claim 5, characterized in that: The water temperature control component comprises a heat exchange guide pipe (18), a plate heat exchanger (19), a water inlet pipe (20), a cold water supply pipe (21) and a solenoid valve (22); the end of the secondary heating water pipe (15) away from the drain pipe (13) is fixedly connected to the heat exchange guide pipe (18); the end of the heat exchange guide pipe (18) away from the secondary heating water pipe (15) is fixedly connected to the plate heat exchanger (19); the output end of the plate heat exchanger (19) is fixedly connected to the water inlet pipe (20); the end of the water inlet pipe (20) away from the plate heat exchanger (19) is fixedly connected to the surface of the water flow diverter plate (6); the surface of the water inlet pipe (20) is fixedly connected to the cold water supply pipe (21); and the surface of the cold water supply pipe (21) is fixedly connected to the solenoid valve (22).

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