High-pressure Waterway Heat Preservation Device for Road Sweeping Vehicle Based on Exhaust Gas Waste Heat

Abstract

The present invention relates to the field of high-pressure waterway heat preservation of a washing and sweeping vehicle, and specifically relates to a high-pressure waterway heat preservation device for a washing and sweeping vehicle based on waste heat of exhaust gas, which includes a vehicle body. A sub-frame is fixedly connected to the middle section of the vehicle body. An engine body is fixedly connected to the top end of the sub-frame. A water tank assembly is fixedly connected to the front top of the sub-frame. A waste heat transmission system is arranged in the inner wall of the sub-frame. A controller is fixedly connected to one end of the vehicle body. For the high-pressure waterway heat preservation device for a washing and sweeping vehicle based on waste heat of exhaust gas, through the arrangement of the spiral exhaust gas hose and the temperature-resistant corrugated hose in the waste heat transmission system, it is convenient to continuously keep the infusion pipe warm. At the same time, the hot gas is ejected through the nozzle, so that the hot gas can heat up the nozzle to avoid nozzle freezing. At the same time, through the arrangement of the inner cavity in the water tank, the whole water tank and the pump module are heat-preserved, which is convenient to improve the heat preservation efficiency.

Description

Technical Field

[0001] The present invention relates to the field of high-pressure waterway heat preservation of a washing and sweeping vehicle, and specifically to a high-pressure waterway heat preservation device for a washing and sweeping vehicle based on waste heat of exhaust gas. Background Art

[0002] A washing and sweeping vehicle is a road cleaning and sanitation vehicle in the series of road sweeping vehicles, which has the functions of road surface cleaning and road edge cleaning. Its cleaning method is generally to clean the road surface and leaves on the road edge through the high-pressure water flow. However, due to the use of water for cleaning, when the external environmental temperature is relatively low, it is easy to cause freezing and requires additional heating, so a heat preservation device is needed.

[0003] The inventor found that the following problems in the prior art have not been well solved: 1. When the existing heat preservation device is in use, the heat preservation circuit is too long, and the equipment is heated independently, resulting in low heating efficiency and inconvenience in use; 2. It is not convenient to change the heating state according to the environmental temperature, making the operation cumbersome and inconvenient for the staff to use. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-pressure waterway heat preservation device for a washing and sweeping vehicle based on waste heat of exhaust gas to solve the problems of 1. low heating efficiency and 2. inconvenient adjustment and change mentioned in the above background art. To achieve the above purpose, the present invention provides the following technical solution: A high-pressure waterway heat preservation device for a washing and sweeping vehicle based on waste heat of exhaust gas, including a vehicle body, a sub-frame is fixedly connected to the middle section of the vehicle body, an engine body is fixedly connected to the top of the sub-frame, a water tank assembly is fixedly connected to the front top of the sub-frame, a waste heat transmission system is arranged in the inner wall of the sub-frame, and a controller is fixedly connected to one end of the vehicle body;

[0005] The waste heat transmission system includes a transmission channel, a liquid discharge chamber and a heat preservation member. The transmission channel is arranged in the inner wall of the sub-frame. A temperature sensor is fixed on the top wall of the transmission channel, and the temperature sensor is electrically connected to the controller. An infusion pipe penetrates through the bottom wall of the transmission channel, and the infusion pipe is communicated with the water tank assembly. The liquid discharge chamber is fixed at the bottom end of the vehicle body. A spray pipe is fixed in the inner wall of the liquid discharge chamber, and a plurality of nozzles are fixedly connected to the outer wall of the spray pipe at equal intervals, and the plurality of nozzles are communicated with the spray pipe. The heat preservation member is sleeved on the outer wall of the infusion pipe.

[0006] Preferably, a plurality of temperature sensors are provided, and the plurality of temperature sensors are horizontally distributed at equal intervals on the top wall of the transmission pipeline.

[0007] Preferably, the heat preservation member includes a heat-resistant corrugated hose. The inner wall of the heat-resistant corrugated hose is sleeved and connected to the outer wall of the infusion tube. A spiral exhaust gas hose is sleeved in the inner wall of the heat-resistant corrugated hose, and the exhaust gas hose spirally surrounds the outer wall of the infusion tube. One end of the exhaust gas hose and the output tube are both connected to the nozzle in communication, and the other end of the exhaust gas hose is connected to the transmission channel in communication.

[0008] Preferably, a tail gas muffler is fixedly connected to the bottom wall of the vehicle body. The front end of the tail gas muffler is communicated with an exhaust pipe. The top end of the exhaust pipe is communicated with a heating pipe. The heating pipe and the exhaust pipe are connected by a three-way valve, and the top end of the heating pipe is connected to the transmission channel in communication.

[0009] Preferably, the three-way valve includes a sealing ring. The outer wall of the sealing ring is fixedly connected to the inner wall of the three-way valve. Two groups of sealing rings are symmetrically arranged about the axis of the three-way valve. A ball valve is sleeved between the two sealing rings. A T-shaped flow port is opened in the inner wall of the ball valve. One side of the ball valve is fixedly connected to a rotating shaft, and the rotating shaft is provided with a sealed bearing. One side of the rotating shaft extends out of the three-way pipe and is rotatably connected to a telescopic rod.

[0010] Preferably, the three-way valve further includes a driving motor. The outer wall of the driving motor is fixedly connected to the inner wall of the vehicle body. The main shaft of the driving motor is fixedly connected to a screw rod slide table. The bottom end of the slider of the screw rod slide table is hinged to the top end of the telescopic rod. The screw rod slide table and the telescopic rod are horizontally arranged.

[0011] Preferably, the water tank assembly includes a water tank body. The bottom end of the water tank body is fixedly connected to the top end of the subframe. An inner cavity is opened in the inner wall of the water tank. The bottom end of the inner cavity is connected to the transmission channel in communication. An air outlet is opened on the outer wall of one side of the inner cavity. A water pump module body is fixed on the bottom wall of the water tank body.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] In the present invention, through the setting of the spiral exhaust gas hose and the heat-resistant corrugated hose in the waste heat transmission system, it is convenient to continuously heat-insulate the infusion tube. At the same time, the hot air is sprayed out through the nozzle, so that the hot air can heat up the nozzle to avoid nozzle freezing. At the same time, through the setting of the inner cavity in the water tank, the whole water tank and the pump module are heat-insulated, which is convenient to improve the heat-insulation efficiency.

[0014] In the present invention, through the setting of several temperature sensors in the waste heat system, the ambient temperature is judged. Adopting the design principle of the three-phase valve, through the setting of the screw rod slide table and the telescopic rod, the opening degree of the heating pipe is synchronously adjusted to control the heating state. Description of the Drawings

[0015] Figure 1 Schematic diagram of the overall assembly cross-section structure of the present invention Figure 1 ;

[0016] Figure 2 Schematic top view sectional structure diagram of the subframe in the present invention;

[0017] Figure 3 Schematic sectional structure diagram of the three-way valve in the present invention;

[0018] Figure 4 Schematic enlarged view of a local part of the vehicle body in the present invention;

[0019] Figure 5 Schematic sectional structure diagram of the ball valve in the present invention;

[0020] Figure 6 In the present invention Figure 4 Schematic enlarged structure diagram at position A in

[0021] In the figure: 1. Vehicle body; 2. Subframe; 3. Engine body; 4. Water tank assembly; 41. Water tank body; 42. Inner cavity; 5. Waste heat transmission system; 51. Transmission channel; 52. Temperature sensor; 53. Infusion pipe; 54. Drainage bin; 55. Spray pipe; 56. Nozzle; 57. Heat preservation member; 571. Heat-resistant corrugated hose; 572. Tail gas hose; 6. Tail gas muffler; 7. Exhaust pipe; 8. Heating pipe; 9. Three-way valve; 91. Sealing ring; 92. Ball valve; 93. Telescopic rod; 94. Driving motor; 95. Lead screw slide. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 6 , the present invention provides a technical solution: A high-pressure waterway heat preservation device for a washing and sweeping vehicle based on tail gas waste heat, including a vehicle body 1, a subframe 2 is fixedly connected to the middle section of the vehicle body 1, an engine body 3 is fixedly connected to the top end of the subframe 2, a water tank assembly 4 is fixedly connected to the front top of the subframe 2, a waste heat transmission system 5 is provided in the inner wall of the subframe 2, and a controller is fixedly connected to one end of the vehicle body 1;

[0024] The waste heat transfer system 5 includes a transfer channel 51, a liquid discharge bin 54, and a heat insulation member 57. The transfer channel 51 is formed in the inner wall of the subframe 2. A temperature sensor 52 is fixed on the top wall of the transfer channel 51, and the temperature sensor 52 is electrically connected to the controller. A liquid infusion pipe 53 penetrates through the bottom wall of the transfer channel 51, and the liquid infusion pipe 53 is communicated with the water tank assembly 4. The liquid discharge bin 54 is fixed at the bottom end of the vehicle body 1. A spray pipe 55 is fixed in the inner wall of the liquid discharge bin 54, and a plurality of nozzles 56 are fixedly connected to the outer wall of the spray pipe 55 at equal intervals, and the plurality of nozzles 56 are communicated with the spray pipe 55. The heat insulation member 57 is sleeved on the outer wall of the liquid infusion pipe 53. Along with the high-temperature gas entering the heat supply pipe 8, a part of the hot gas enters the tail gas hose 572. Through the arrangement of the spiral winding of the tail gas hose 572, the liquid infusion pipe 53 is continuously heated, and then discharged through the nozzle 56. Another part of the hot gas enters the inner cavity 42 of the water tank body 41 to heat the entire water tank assembly 4 to protect the water tank and its internal components. Finally, the gas is discharged through the air outlet to complete the entire hot gas cycle. The specific models of the temperature sensor 52 and the controller are LM135 and C8051F020 single-chip microcomputer respectively.

[0025] In this embodiment, as Figure 1 shown, a plurality of temperature sensors 52 are provided, and the plurality of temperature sensors 52 are horizontally distributed at equal intervals on the top wall of the transfer pipeline. With the start of the entire vehicle body 1, the plurality of temperature sensors 52 located in the transfer pipeline start to detect the temperature of the current environment. When the internal temperature is lower than the set critical temperature, the temperature sensor 52 generates a signal and transmits it to the controller. The controller feeds back the signal and transmits it to the drive motor 94. The specific model of the temperature sensor 52 is LM135.

[0026] In this embodiment, as Figure 1 、 Figure 2 and Figure 4 shown, the heat insulation member 57 includes a heat-resistant corrugated hose 571. The inner wall of the heat-resistant corrugated hose 571 is sleeved on the outer wall of the liquid infusion pipe 53. A spiral tail gas hose 572 is sleeved in the inner wall of the heat-resistant corrugated hose 571, and the tail gas hose 572 spirally surrounds the outer wall of the liquid infusion pipe 53. One end of the tail gas hose 572 and the output pipe are both communicated with the nozzle 56. The other end of the tail gas hose 572 is communicated with the transfer channel 51. Through the arrangement of the spiral winding of the tail gas hose 572, the liquid infusion pipe 53 is continuously heated, and then discharged through the nozzle 56, so that the liquid infusion pipe 53 and the nozzle 56 can be continuously heated.

[0027] In this embodiment, as Figure 1 and Figure 4As shown, a tail gas muffler 6 is fixedly connected to the bottom wall of the vehicle body 1. The front end of the tail gas muffler 6 is communicated with an exhaust pipe 7. The top end of the exhaust pipe 7 is communicated with a heating pipe 8. The heating pipe 8 is connected to the exhaust pipe 7 through a three-way valve 9. The top end of the heating pipe 8 is communicated with the transmission channel 51. The heating pipe 8 and the two exhaust pipes 7 are connected through the three-way valve 9, which is convenient to control the hot air flow rate of the heating pipe 8 and convenient for operation.

[0028] In this embodiment, as Figure 4 、 Figure 5 and Figure 6 shown, the three-way valve 9 includes a sealing ring 91. The outer wall of the sealing ring 91 is fixedly connected to the inner wall of the three-way valve 9. Two groups of sealing rings 91 are symmetrically arranged about the axis of the three-way valve 9. A ball valve 92 is sleeved between the two sealing rings 91. A flow port in the shape of a T-shaped structure is opened in the inner wall of the ball valve 92. One side of the ball valve 92 is fixedly connected to a rotating shaft, and the rotating shaft is provided with a sealed bearing. One side of the rotating shaft extends out of the three-way pipe and is rotatably connected to a telescopic rod 93. The controller drives the driving motor 94 to drive the lead screw to rotate, and drives the slider to drive the telescopic rod 93 to move backward. At this time, the telescopic rod 93 will drive the ball valve 92 to rotate counterclockwise through the rotating rod. Since the flow groove on the ball valve 92 is arranged in a T-shaped structure, the three outlets of the flow groove of the ball valve 92 respectively correspond to the two exhaust pipes 7 and the heating pipe 8.

[0029] In this embodiment, as Figure 3 、 Figure 4 and Figure 5 shown, the three-way valve 9 further includes a driving motor 94. The outer wall of the driving motor 94 is fixedly connected to the inner wall of the vehicle body 1. The main shaft of the driving motor 94 is fixedly connected to a lead screw slider 95. The bottom end of the slider of the lead screw slider 95 is hinged to the top end of the telescopic rod 93. The lead screw slider 95 and the telescopic rod 93 are horizontally arranged. Along with the controller receiving the signal feedback from the temperature sensor 52, the lead screw rotates forward to drive the slider to drive the telescopic rod 93 to move forward, causing the ball valve 92 in the three-way valve 9 to rotate clockwise. At this time, the upper end of the ball valve 92 leaves the heating pipe 8, and its cross-section is symmetric with the T-shaped structure, that is, the heating stops. When the lead screw rotates reversely, the ball valve 92 resets, so that the hot air can be normally supplied. The specific models of the temperature sensor 52 and the controller are: LM135 and C8051F020 single-chip microcomputer respectively.

[0030] In this embodiment, as Figure 1As shown, the water tank assembly 4 includes a water tank body 41. The bottom end of the water tank body 41 is fixedly connected to the top end of the subframe 2. An inner cavity 42 is formed in the inner wall of the water tank. The bottom end of the inner cavity 42 is communicated with a transmission channel 51. An air outlet is formed on the outer wall of one side of the inner cavity 42. A water pump module body is fixed on the bottom wall of the water tank body 41. Hot air enters the inner cavity 42 in the water tank body 41 to heat up the entire water tank assembly 4, protecting the water tank and its internal components. Finally, the gas is discharged through the air outlet to complete the entire hot air cycle, facilitating the improvement of thermal efficiency without the need for separate heating.

[0031] Usage method and advantages of the present invention: The high-pressure waterway heat preservation device for a washing and sweeping vehicle based on waste heat of exhaust gas works as follows:

[0032] As Figures 1 to 6 shown, before using the device, the staff controls the controller through an external control panel to set a certain critical temperature. Along with the startup of the entire vehicle body 1, several temperature sensors 52 located in the transmission pipeline start to detect the temperature in the current environment. When the internal temperature is lower than the set critical temperature, the temperature sensor 52 generates a signal and transmits it to the controller. The controller feeds back the signal and transmits it to the drive motor 94. Due to the temperature drop, the controller drives the drive motor 94 to drive the screw rod to rotate, and the drive slider drives the telescopic rod 93 to move backward. At this time, the telescopic rod 93 will drive the ball valve 92 to rotate counterclockwise through the rotating rod. Since the flow groove on the ball valve 92 is arranged in a T-shaped structure, the three outlets of the flow groove of the ball valve 92 respectively correspond to two groups of exhaust pipes 7 and the heat supply pipe 8, so that the waste hot air generated by the engine can enter the transmission channel 51 through the heat supply pipe 8. At this time, a part of the hot air enters the tail gas hose 572. Through the arrangement of the spiral winding of the tail gas hose 572, the infusion pipe 53 is continuously heated, and at the same time, it is discharged through the nozzle 56. Another part of the hot air enters the inner cavity 42 in the water tank body 41 to heat up the entire water tank assembly 4, protecting the water tank and its internal components. Finally, the gas is discharged through the air outlet to complete the entire hot air cycle;

[0033] The specific models of the temperature sensor 52 and the controller described above are: LM135 and C8051F020 single-chip microcomputer respectively.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Technical staff in this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure waterway heat preservation device for a washing and sweeping vehicle based on waste heat of exhaust gas, comprising a vehicle body (1), characterized in that: A subframe (2) is fixedly connected to the middle section of the vehicle body (1). An engine body (3) is fixedly connected to the top end of the subframe (2). A water tank assembly (4) is fixedly connected to the front top of the subframe (2). A waste heat transfer system (5) is provided in the inner wall of the subframe (2). A controller is fixedly connected to one end of the vehicle body (1). The waste heat transfer system (5) includes a transfer channel (51), a liquid discharge chamber (54), and a heat insulation member (57). The transfer channel (51) is provided in the inner wall of the subframe (2). A temperature sensor (52) is fixed to the top wall of the transfer channel (51), and the temperature sensor (52) is electrically connected to the controller. An infusion tube (53) penetrates through the bottom wall of the transfer channel (51), and the infusion tube (53) is communicated with the water tank assembly (4). The liquid discharge chamber (54) is fixed to the bottom end of the vehicle body (1). A spray pipe (55) is fixed in the inner wall of the liquid discharge chamber (54), and a plurality of nozzles (56) are fixedly connected to the outer wall of the spray pipe (55) at equal intervals, and the plurality of nozzles (56) are communicated with the spray pipe (55). The heat insulation member (57) is sleeved on the outer wall of the infusion tube (53). The heat insulation member (57) includes a heat-resistant corrugated hose (571). The inner wall of the heat-resistant corrugated hose (571) is sleeved on the outer wall of the infusion tube (53). A spiral exhaust gas hose (572) is sleeved in the inner wall of the heat-resistant corrugated hose (571), and the exhaust gas hose (572) spirally surrounds the outer wall of the infusion tube (53), and one end of the exhaust gas hose (572) and the output pipe are both communicated with the nozzle (56). The other end of the exhaust gas hose (572) is communicated with the transfer channel (51). An exhaust gas silencer (6) is fixedly connected to the bottom wall of the vehicle body (1). An exhaust pipe (7) is communicated with the front end of the exhaust gas silencer (6). A heat supply pipe (8) is communicated with the top end of the exhaust pipe (7). The heat supply pipe (8) is connected to the exhaust pipe (7) through a three-way valve (9), and the top end of the heat supply pipe (8) is communicated with the transfer channel (51). The three-way valve (9) includes a sealing ring (91). The outer wall of the sealing ring (91) is fixedly connected to the inner wall of the three-way valve (9). There are two groups of sealing rings (91) symmetrically arranged about the axis of the three-way valve (9), and a ball valve (92) is sleeved between the two sealing rings (91). A T-shaped flow port is provided in the inner wall of the ball valve (92). One side of the ball valve (92) is fixedly connected to a rotating shaft, and the rotating shaft is provided with a sealed bearing. One side of the rotating shaft extends to the three-way pipe and is rotatably connected to a telescopic rod (93). The three-way valve (9) further includes a driving motor (94). The outer wall of the driving motor (94) is fixedly connected to the inner wall of the vehicle body (1). The main shaft of the driving motor (94) is fixedly connected to a screw slide table (95), and the bottom end of the slider of the screw slide table (95) is hinged to the top end of the telescopic rod (93). The screw slide table (95) and the telescopic rod (93) are horizontally arranged.

2. The high-pressure waterway heat preservation device for a washing and sweeping vehicle based on tail gas waste heat according to claim 1, wherein: A plurality of the temperature sensors (52) are provided, and the plurality of temperature sensors (52) are horizontally distributed at equal intervals on the top wall of the transmission pipeline.

3. The high-pressure waterway heat preservation device for a washing and sweeping vehicle based on waste gas waste heat according to claim 1, wherein: The water tank assembly (4) includes a water tank body (41). The bottom end of the water tank body (41) is fixedly connected to the top end of the subframe (2). An inner cavity (42) is formed in the inner wall of the water tank. The bottom end of the inner cavity (42) is communicated with the transmission channel (51). An air outlet is formed on the outer wall of one side of the inner cavity (42). A water pump module body is fixed on the bottom wall of the water tank body (41).

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