Air-water mixed cooling system for drum brake

Abstract

The utility model provides a drum brake air-water mixing cooling system, which relates to the technical field of drum brake cooling, and comprises a brake controller, an air storage tank, a Venturi air-water mixer and a high-level water tank, the air storage tank is connected with an air inlet at the upper end of the Venturi air-water mixer through an air path pipeline, and the high-level water tank is connected with an air outlet at the lower end of the Venturi air-water mixer; the high-level water tank is connected with an air inlet in the side wall of the venturi air-water mixer through a waterway pipeline, a water vapor nozzle in the lower end of the venturi air-water mixer right faces an automobile drum brake disc, an air electromagnetic valve is arranged on the air pipeline, a water outlet electromagnetic valve is arranged on the waterway pipeline, and the air electromagnetic valve and the water outlet electromagnetic valve are both electrically connected with the brake controller. A water supplementing pipe is arranged on the high-level water tank. Outdoor air and water are mixed to form an air-water mixture to be sprayed to the drum type brake disc, the structure of the brake disc is not changed, the water spraying amount can be automatically adjusted according to the temperature of the brake drum, and the water consumption during braking is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drum brake cooling technology, and in particular to a drum brake air-water mixed cooling system. Background Technology

[0002] Large vehicles, especially trucks or construction vehicles, experience significant temperature increases in their braking systems during prolonged high-load operation, potentially leading to decreased braking performance or even failure. Traditional drum brakes, due to their structural characteristics, have relatively poor heat dissipation, making water spraying a common solution for cooling. However, this cooling method often relies solely on large amounts of water spraying, wasting considerable water. Furthermore, in winter, when outdoor temperatures are extremely low, water spraying can cause large amounts of water to be discharged onto the road surface, leading to icing and compromising traffic safety. Utility Model Content

[0003] This utility model addresses the problems existing in the prior art by providing a drum brake air-water mixing cooling system.

[0004] To achieve the above objectives, the present invention employs a drum brake air-water mixing cooling system, comprising a brake controller, an air tank, a Venturi air-water mixer, and a high-level water tank. The air tank is connected to the air inlet at the upper end of the Venturi air-water mixer via an air pipeline. The high-level water tank is connected to the air inlet on the side wall of the Venturi air-water mixer via a water pipeline. The water vapor nozzle at the lower end of the Venturi air-water mixer is directly facing the automobile drum brake disc. An air solenoid valve is installed on the air pipeline, and a water outlet solenoid valve is installed on the water pipeline. Both the air solenoid valve and the water outlet solenoid valve are electrically connected to the brake controller. A water supply pipe is installed on the high-level water tank.

[0005] Furthermore, a temperature-sensing electromagnetic regulating valve is installed on the water pipe between the outlet solenoid valve and the high-level water tank, and the temperature-sensing electromagnetic regulating valve is electrically connected to a temperature sensor installed on the automobile drum brake disc.

[0006] Furthermore, a pressure switch is installed on the upper part of the gas storage tank, the gas storage tank is connected to an air pump through an air pipe, the pressure switch is electrically connected to the air pump, and a safety valve is installed on the top of the gas storage tank.

[0007] Furthermore, an air filter is installed at the air inlet of the air pump.

[0008] Furthermore, a safety valve is installed on the top of the gas storage tank.

[0009] Furthermore, a shut-off valve and a water filter are sequentially installed on the water pipe between the temperature-sensing electromagnetic regulating valve and the outlet solenoid valve.

[0010] Furthermore, a check valve is installed on the water pipeline between the water outlet solenoid valve and the Venturi air-water mixer.

[0011] Furthermore, the main body of the Venturi air-water mixer is provided with a partition, which divides the interior of the main body into an air chamber and a water chamber. The partition has a bent part in the middle that protrudes from the air chamber to the water chamber, and several inclined perforated water channels are evenly opened at the bottom of the partition.

[0012] Due to the adoption of the above technical solution, the beneficial technical effects of this utility model are as follows: The drum brake air-water mixing cooling system of this utility model mixes outdoor air and water to form an air-water mixture which is then sprayed onto the drum brake disc without changing the brake disc structure. The amount of water sprayed can be automatically adjusted according to the temperature of the brake drum, reducing the amount of water used during braking. In winter, the outdoor air temperature is low, and the air itself has a good cooling function. Mixing a small amount of water makes the cooling effect even better. Moreover, most of the small amount of water in the air-water mixture is evaporated into the air after the brake disc is heated, which will not cause the road to freeze and will not affect traffic safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a drum brake air-water mixing cooling system according to this utility model;

[0014] Figure 2 yes Figure 1 A schematic diagram of the structure of a Chinese-made Churi air-water mixer;

[0015] Attached reference numerals: 1-Brake controller, 2-Air pump, 3-Air tank, 4-Venturi air-water mixer, 401-Air inlet, 402-Water inlet, 403-Water vapor nozzle, 404-Baffle plate, 5-High-level water tank, 501-Water supply pipe, 6-Air solenoid valve, 7-Water outlet solenoid valve, 8-Temperature sensor, 9-Temperature-sensing solenoid regulating valve, 10-Pressure switch, 11-Air filter, 12-Stop valve, 13-Water filter, 14-Check valve, 15-Safety valve, 16-Automotive drum brake disc. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following describes this utility model in further detail through preferred embodiments.

[0017] Please see the appendix Figure 1-2As shown, this embodiment of a drum brake air-water mixing cooling system includes a brake controller 1, an air tank 3, a Venturi air-water mixer 4, and a high-level water tank 5. The air tank 3 is connected to the air inlet 401 at the upper end of the Venturi air-water mixer 4 via an air pipeline. The high-level water tank 5 is connected to the air inlet 401 on the side wall of the Venturi air-water mixer 4 via a water pipeline. The water vapor nozzle 403 at the lower end of the Venturi air-water mixer 4 is directly facing the automobile drum brake disc 16. An air solenoid valve 6 is installed on the air pipeline, and a water outlet solenoid valve 7 is installed on the water pipeline. Both the air solenoid valve 6 and the water outlet solenoid valve 7 are electrically connected to the brake controller 1. A water supply pipe 501 is installed on the high-level water tank 5.

[0018] In this embodiment, the high-level water tank 5 is pre-filled with water before the drum brake air-water mixing cooling system is put into operation to ensure that the brake controller 1 is connected to the vehicle's braking system. When the brake controller 1 receives the vehicle's braking command, it controls the vehicle's drum brake disc 16 to perform braking action and controls the air solenoid valve 6 and the water outlet solenoid valve 7 to open. The compressed air in the air tank 3 and the water in the high-level water tank 5 flow through the air pipeline and water pipeline respectively through the Venturi air-water mixer 4. The air jet and water are drawn in to form an air-water mixture which is sprayed onto the drum brake disc to cool it.

[0019] Specifically, to achieve automatic adjustment of the water spray volume, a temperature-sensing electromagnetic regulating valve 9 is installed on the water pipe between the water outlet solenoid valve 7 and the high-level water tank 5. The temperature-sensing electromagnetic regulating valve 9 is electrically connected to a temperature sensor 8 installed at the vehicle drum brake disc 16. The temperature sensor 8 senses the temperature of the vehicle drum brake disc 16 and adjusts the opening of the temperature-sensing electromagnetic regulating valve 9 according to the temperature of the vehicle drum brake disc 16.

[0020] Specifically, to ensure stable air pressure inside the air tank 3, a pressure switch 10 is installed on the upper part of the air tank 3. The air tank 3 is connected to the air pump 2 via an air pipe, and the pressure switch 10 is electrically connected to the air pump 2. A safety valve 15 is installed on the top of the air tank 3. The pressure switch 10 is either a mechanical or electronic pressure switch. The pressure switch 10 detects the air pressure inside the air tank 3 and controls the air pump 2 to fill the air tank 3 when the air pressure inside the air tank 3 is lower than the preset pressure. The flow rate of the air pump 2 should not be less than the continuous air jet flow rate requirement. When the pressure in the air tank 3 reaches the design pressure value, the air pump 2 stops operating.

[0021] Specifically, an air filter 11 is installed at the air inlet 401 of the air pump 2, a shut-off valve 12 and a water filter 13 are sequentially installed on the water pipe between the temperature-sensing electromagnetic regulating valve 9 and the water outlet electromagnetic valve 7, and a one-way valve 14 is installed on the water pipe between the water outlet electromagnetic valve 7 and the Venturi air-water mixer 4.

[0022] Specifically, the main body of the Venturi air-water mixer 4 is provided with a partition 404, which divides the interior of the main body into an air chamber and a water chamber. The partition 404 has a bent part in the middle that protrudes from the air chamber to the water chamber, and several inclined perforated water channels are evenly opened at the bottom of the partition 404.

[0023] In winter, due to the low outdoor temperature and low air enthalpy, when the temperature of the drum brake disc drops to the specified operating temperature, the temperature-sensing electromagnetic regulating valve 9 closes, and the venturi air-water mixer only sprays air to cool the brake disc, preventing the ground from freezing.

[0024] In summer, the outdoor temperature is high, the air enthalpy is high, and the drum brake disc temperature is high. The temperature-sensing electromagnetic regulating valve 9 adjusts its opening according to the drum brake disc temperature to increase the water flow rate. The water flows out and mixes with the jet air in the Venturi tube air-water mixer to form a gas-liquid mixture that is sprayed onto the drum brake disc, thereby cooling the drum brake disc.

[0025] The above description is a preferred embodiment of the present utility model, used to explain the technical solution of the present utility model. Those skilled in the art can also make conventional modifications, equivalent substitutions and improvements within the spirit and principles of the present utility model.

Claims

1. A drum brake air-water mixture cooling system, characterized in that: The application relates to a brake controller, an air tank, a Venturi gas-water mixer and a high-level water tank, wherein the air tank is connected with an air inlet at the upper end of the Venturi gas-water mixer through an air pipeline, the high-level water tank is connected with an air inlet in the side wall of the Venturi gas-water mixer through a water pipeline, a water vapor spout at the lower end of the Venturi gas-water mixer is opposite to a drum brake disc of a vehicle, an air electromagnetic valve is arranged on the air pipeline, a water electromagnetic valve is arranged on the water pipeline, the air electromagnetic valve and the water electromagnetic valve are electrically connected with the brake controller, and a water supplement pipe is arranged on the high-level water tank.

2. The air-water mixture cooling system for drum brake as claimed in claim 1, wherein: A temperature sensing electromagnetic regulating valve is arranged on the water pipeline between the water electromagnetic valve and the high-level water tank, and the temperature sensing electromagnetic regulating valve is electrically connected with a temperature sensor arranged at the drum brake disc of the vehicle.

3. The air and water mixture cooling system for drum brake as claimed in claim 1, wherein: A pressure switch is arranged on the upper portion of the air tank, the air tank is connected with an air pump through an air pipe, the pressure switch is electrically connected with the air pump, and a safety valve is arranged on the top of the air tank.

4. The air-water mixture cooling system for drum brake as claimed in claim 3, wherein: An air filter is arranged at the air inlet of the air pump.

5. The air and water mixture cooling system for drum brake as claimed in claim 2 wherein: A stop valve and a water filter are sequentially arranged on the water pipeline between the temperature sensing electromagnetic regulating valve and the water electromagnetic valve, and a one-way valve is arranged on the water pipeline between the water electromagnetic valve and the Venturi gas-water mixer.

6. The air-water mixture cooling system for drum brake as claimed in claim 5 wherein: A partition plate is arranged in the main pipe body of the Venturi gas-water mixer, the main pipe body is divided into a gas cavity and a water cavity by the partition plate, the middle portion of the partition plate is provided with a bending portion which is outwardly convex from the gas cavity to the water cavity, and a plurality of inclined hole type water channels are evenly arranged in the lower portion of the partition plate.

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