In-cabin spraying system and engineering machinery thereof

Abstract

The utility model discloses an in-cabin spraying system and engineering machinery thereof, and belongs to the technical field of engineering machinery. The spraying system overcomes the defects that combustible dust around an engine and a radiator is prone to spontaneous combustion due to the fact that a traditional spraying system in a workshop cannot spray water to remove dust in winter and a water spraying device cannot cover the interior of an engine compartment in the prior art. The main structure of the device comprises an engine, a heating water pump, a water storage tank, a spraying controller and a spraying water pump, the engine is connected with the heating water pump and the water storage tank, the heating water pump is connected with the water storage tank, and the spraying controller is connected with a temperature sensor arranged on the water storage tank, the heating water pump and the spraying water pump. The water storage tank is further connected with a spraying water pump through a water filter, an outlet of the spraying water pump is connected with a spraying water pipe, and a spraying head is arranged on the spraying water pipe. The utility model is mainly applied to engineering machinery.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and in particular relates to an in-cabin spray system and an engineering machinery thereof. Background Art

[0002] In the production of chemical, metallurgical, building materials processing and other industries, there is a large amount of combustible dust in the working environment. Engineering machinery and vehicles operate in this environment. The engine generates high temperature for a long time, which is easy to ignite dust, posing a great safety hazard. The main safety measures currently taken are traditional dust removal methods such as ventilation and water spraying in the production workshop to reduce the concentration of environmental dust.

[0003] Although ventilation in the production workshop can reduce the concentration of combustible dust in the working environment, it will cause external environmental pollution. Spraying water in the workshop can effectively control the dust concentration in the working environment, but in cold areas, when the temperature reaches a certain level in winter, the water spray device will freeze and cannot work; spraying water in the workshop will cause the humidity in the workshop to be too high, affecting other electrical equipment or machines, forming another safety risk. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cabin spray system and engineering machinery thereof.

[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0006] A cabin spray system comprises an engine, a heating water pump, a water tank, a spray controller and a spray water pump, wherein the engine is connected to the heating water pump and the water tank respectively, the heating water pump is connected to the water tank, the spray controller is connected to a temperature sensor, the heating water pump and the spray water pump respectively arranged on the water tank, the water tank is also connected to the spray water pump through a water filter, the outlet of the spray water pump is connected to a spray water pipe, and a spray head is arranged on the spray water pipe.

[0007] Preferably, the spray controller is also connected to the whole machine controller and the mode selection switch respectively.

[0008] Preferably, a water level sensor is installed on the water storage tank, and the spray controller is also connected to the water level sensor.

[0009] Preferably, the water tank comprises a water tank body, a water level sensor mounting seat for mounting a water level sensor and a temperature sensor mounting seat for mounting a temperature sensor are arranged on the water tank body, and a water heating heater is arranged inside the water tank body.

[0010] Preferably, the water tank body is also provided with a cleaning window cover, a water inlet cover, a drain valve, a ball valve and a water tank outlet joint, and the water tank outlet joint is connected to the water filter.

[0011] Preferably, the water-heating heater comprises a water-heating heater core, and two ends of the water-heating heater core are respectively connected to a heater water inlet and a heater water outlet.

[0012] Preferably, a box partition is also provided inside the water tank body.

[0013] Preferably, the nozzles are arranged on the left and right sides of the engine.

[0014] An engineering machine is provided with a cabin spray system as described above.

[0015] Preferably, the water tank is installed at the rear of the entire machine outside the engine compartment, and the mode selection switch and the spray controller are both installed inside the cab.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. For existing engineering machinery used in working environments with a lot of combustible dust, even if there is a spray dust removal system in the working scene, the engine compartment cannot be covered with spray. The spray system in the cabin of the utility model can realize spray dust removal in the engine compartment, increase air humidity, reduce engine compartment temperature, avoid the risk of spontaneous combustion of combustible dust, and improve safety;

[0018] 2. The water storage tank with heating function and the spray water pump with back suction function can heat and melt the frozen water to achieve normal spraying in low temperature environment in winter. The high temperature antifreeze in the engine is introduced into the water heater through the controllable heating water pump, and the heat of the engine is used to heat the water in the water storage tank without using an external heat source;

[0019] 3. With water level and water temperature detection, it can effectively protect the spray pump, nozzle and other components, avoid the spray pump from idling and sucking air, improve the spray efficiency, prevent the spray pump from being damaged, and improve the reliability and durability of the system. At the same time, a water filter is set in front of the spray pump to prevent the spray pump from sucking impurities;

[0020] 4. The spraying time and interval time can be automatically controlled, which can well control the air humidity inside the engine compartment, effectively remove dust and prevent the spontaneous combustion of combustible dust; and will not make the humidity in the engine compartment too high, causing rust on engine parts;

[0021] 5. Arranging several nozzles diagonally on the left and right sides of the engine can effectively reduce the concentration of combustible dust around the engine, increase the air humidity around the engine, reduce the air temperature, destroy the spontaneous combustion conditions of combustible dust, and avoid the accumulation of combustible dust and spontaneous combustion; at the same time, the nozzles are arranged in the engine compartment, and the number of nozzles can be increased or decreased and the spray angle can be adjusted according to requirements to adapt to different models and working environment requirements;

[0022] 6. The spray system in the engine compartment, all components are installed on the whole machine, can move freely with the whole machine, and are not restricted by external conditions;

[0023] 7. The controllable spray water pump can realize standby, spraying, back suction, and pause, and continue to circulate when conditions are met. It can not only remove dust and prevent dust from spontaneous combustion, but also control the amount of spray water to prevent the area around the engine from being too humid. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the principle of the spray system in the middle cabin of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the water storage tank in the utility model;

[0026] Figure 3 It is a structural schematic diagram of the water storage tank in the utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of the water storage tank in the utility model;

[0028] Figure 5 It is a structural schematic diagram of the water heating heater in the utility model;

[0029] Figure 6 This is a schematic diagram of the position of the nozzle on one side of the engine in the utility model;

[0030] Figure 7 This is a schematic diagram of the installation position of the water storage tank in the utility model;

[0031] Figure 8 It is a schematic diagram of the system working process of the present utility model.

[0032] In the figure: 1. Engine; 2. Heating pump water inlet pipe; 3. Heater water outlet pipe; 4. Heating water pump; 5. Heating pump water outlet pipe; 7. Temperature sensor; 8. Water level sensor; 9. Temperature signal line; 10. Water level signal line; 11. Water tank water outlet pipe; 12. Water filter; 13. Spray controller; 14. Machine communication line; 15. Machine controller; 16. Mode signal line; 17. Mode selection switch; 18. Heating pump control line; 19. Spray pump water inlet pipe; 20. Spray pump control line; 21. Spray pump; 22. Spray water pipe; 23. Spray head;

[0033] 6. Water storage tank; 61. Water storage tank body; 62. Cleaning window cover; 63. Water inlet cover; 64. Drain valve; 65. Ball valve; 66. Water tank outlet connector; 67. Heater water inlet; 68. Temperature sensor mounting seat; 69. Heater water outlet; 610. Water level sensor mounting seat; 611. Box partition; 612. Water heater; 6121. Water heater core; 6122. Water heater bracket; DETAILED DESCRIPTION

[0034] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0035] Embodiment 1:

[0036] like Figure 1 As shown, a cabin spray system includes an engine 1, a heating water pump 4, a water tank 6, a spray controller 13 and a spray water pump 21, wherein the engine 1 is connected to the heating water pump 4 and the water tank 6 respectively, the heating water pump 4 is connected to the water tank 6, the spray controller 13 is connected to the temperature sensor 7, the heating water pump 4 and the spray water pump 21 arranged on the water tank 6 respectively, the water tank 6 is also connected to the spray water pump 21 through a water filter 12, the outlet of the spray water pump 21 is connected to the spray water pipe 22, and a nozzle 23 is arranged on the spray water pipe 22.

[0037] Among them, the heating water pump 4 and the spray water pump 21 are both controllable water pumps, and the flow rate and water flow direction can be controlled.

[0038] Embodiment 2:

[0039] A cabin spray system, which is different from the embodiment 1 in that the spray controller 13 is also connected to the whole machine controller 15 and the mode selection switch 17 respectively.

[0040] Furthermore, a water level sensor 8 is installed on the water storage tank 6 , and the spray controller 13 is also connected to the water level sensor 8 .

[0041] like Figure 2 As shown, the water tank 6 includes a water tank body 61, on which a water level sensor mounting seat 610 for mounting a water level sensor 8 and a temperature sensor mounting seat 68 for mounting a temperature sensor 7 are provided. A water heater 612 is provided inside the water tank body 61. Through the water heater 612 arranged inside the water tank 6, the high-temperature coolant of the engine 1 is used to heat and melt the frozen water in the water tank 6 during the cold winter and then spray it.

[0042] Furthermore, the water tank body 61 is also provided with a cleaning window cover 62 , a water inlet cover 63 , a drain valve 64 , a ball valve 65 and a water tank outlet joint 66 , and the water tank outlet joint 66 is connected to the water filter 12 .

[0043] In this embodiment, the water tank body 61 is formed by welding aluminum alloy or stainless steel plates, the temperature sensor mounting seat 68 and the water level sensor mounting seat 610 are welded to the corresponding interfaces of the water tank body 61, and the cleaning window cover 62, the water inlet cover 63 with a filter, the drain valve 64, the ball valve 65, and the water tank outlet joint 66 are installed at the corresponding threaded interfaces of the water tank body 61 through threaded connections.

[0044] like Figure 5 As shown, the water heater 612 includes a water heater core 6121, and the two ends of the water heater core 6121 are respectively connected to a heater water inlet 67 and a heater water outlet 69, wherein the heater water inlet 67 is connected to the heating water pump 4 through the heating pump outlet pipe 5, and the heater outlet 69 is connected to the engine 1 through the heater outlet pipe 3. The heater water inlet 67 and the heater outlet 69 pass through the holes reserved in the water tank body 61, and the connection positions of the heater water inlet 67 and the heater outlet 69 and the water tank body 61 are fixed by welding. The water heater 612 is supported on the bottom plate of the water tank by a water heater bracket 6122, and the water heater bracket 6122 is welded to the bottom plate of the water tank.

[0045] In this embodiment, the water heater core 6121 is a heat exchanger made of aluminum or stainless steel. The heater water inlet 67, the heater water outlet 69, the water heater bracket 6122 and the water heater core 6121 are welded together. The inside of the water heater 612 flows the high-temperature antifreeze of the engine 1, and the outside is the tap water in the water tank 6 that needs to be sprayed. The two parts are relatively isolated and sealed, do not mix with each other, and only heat exchange is performed.

[0046] like Figure 4 As shown, a box partition 611 is also provided inside the water tank body 61. The box partition 611 is welded inside the water tank 6. In addition to the strengthening effect, it can also reduce the shaking of water inside the water tank 6 during the operation of the whole machine.

[0047] Furthermore, the nozzles 23 are arranged on the left and right sides of the engine 1. Specifically, a number of nozzles 23 are arranged according to the size of the cabin and the spraying requirements, and are respectively installed around the engine 1. The nozzles 23 are arranged on the left and right sides of the engine 1. The arrangement position of the nozzles 23 on one side of the engine 1 is as follows: Figure 6As shown, this figure takes 4 nozzles as an example to illustrate the solution, and the number of nozzles can actually be increased according to demand. The nozzle 23 at one end of the engine 1 is arranged above the engine 1, spraying obliquely downward to the whole machine, and the nozzle 23 near the other end of the engine 1 is arranged below the engine 1, spraying obliquely upward to the whole machine. The nozzles at both ends spray oppositely along the diagonal of the engine 1, and the spray water pipe 22 is adjusted according to the number and installation position of the nozzles 23.

[0048] Embodiment 3:

[0049] like Figure 7 As shown, a construction machinery is provided with the cabin spray system described in the above-mentioned embodiment 2 or embodiment 3.

[0050] Furthermore, the water storage tank 6 is installed at the rear of the whole machine outside the engine compartment, and the mode selection switch 17 and the spray controller 13 are both installed inside the cab.

[0051] The working principle of the utility model is:

[0052] The utility model has three working modes, which are divided into automatic mode, forced start mode and shutdown mode, which are selected by a mode selection switch 17. The mode selection switch 17 is a three-position rocker switch. When it is in the middle position, it is the shutdown mode. When it is pressed to the left, it is the automatic mode. When it is pressed to the right, it is the forced start mode.

[0053] The automatic mode and forced start mode of the utility model first need to determine whether the entire system has working conditions, mainly to determine the water temperature and water level of the tap water in the water storage tank 6, as follows:

[0054] 1. Water temperature judgment:

[0055] After the whole machine is turned on, the spray controller 13 receives the power-on signal from the whole machine controller 15. The spray controller 13 starts to judge the water temperature signal transmitted by the temperature sensor 7 through the temperature signal line 9. If the water temperature is lower than 0°C, it means that the tap water in the water tank 6 has frozen. The spray controller 13 will send a work instruction to the heating water pump 4 through the heating pump control line 18. The heating water pump 4 starts working and transports the high-temperature antifreeze in the engine 1 to the water heater 612 inside the water tank 6 through the heating pump water inlet pipe 2 and the heating pump water outlet pipe 5. The high-temperature engine antifreeze transfers heat to the frozen tap water outside through the water heater 612, melting the frozen tap water in the water tank 6. The engine antifreeze after heat exchange returns to the engine coolant circulation system through the heater outlet pipe 3 connected to the heater outlet 69. The sprinkler controller 13 always detects the water temperature signal transmitted by the temperature sensor 7 through the temperature signal line 9, and controls the working state of the heating water pump 4 to always keep the tap water temperature in the water storage tank 6 above 0°C to ensure that the water is in a liquid state. The heating water pump 4 only needs to work when the ambient temperature is low in the cold winter. When the ambient temperature is higher than 0°C, the heating water pump 4 does not need to work. The purpose is to solve the problem that the sprinkler system cannot work due to freezing in winter.

[0056] 2. Water level judgment:

[0057] After the whole machine is turned on, the spray controller 13 receives the power-on signal from the whole machine controller 15. The spray controller 13 starts to judge the water level signal transmitted by the water level sensor 8 through the water level signal line 10, and the alarm water level is set to 3 cm above the center of the water tank outlet joint 66. If the detected water level is lower than the alarm water level, the spray controller 13 will send a signal to the whole machine controller 15, and the whole machine instrument will display that the spray system needs to add water. After that, the spray controller 13 will monitor the water level information of the water storage tank 6 sent by the water level sensor 8 in real time. Once the water level is lower than the alarm water level, the spray controller 13 will send a water addition request signal to the whole machine controller 15, and it is necessary to replenish tap water to the water storage tank 6 in time. If the alarm continues for 2 minutes and the water level of the water storage tank 6 cannot be replenished, the spray controller 13 will send a stop working signal to the spray water pump 21, and continue to send a water addition signal to the whole machine controller 15 until the liquid level of the water storage tank 6 meets the design requirements.

[0058] The above condition judgment is performed after the whole machine is turned on and the mode selection switch 17 is pressed into the automatic mode or the forced start mode. If the mode selection switch 17 is in the middle position, the entire sprinkler system is in the shutdown state. After the above two conditions are met at the same time, the cabin sprinkler system is ready to start working. The sprinkler controller 13 will enter the automatic mode or the forced start mode according to the corresponding mode of the mode selection switch 17. The specific operation is as follows:

[0059] 3. Automatic mode:

[0060] 31) Working mode selection and condition judgment

[0061] like Figure 8 As shown, after the whole machine is started, the mode selection switch 17 is pressed to the left, and the spray controller 13 detects the system according to the above-mentioned water temperature judgment and water level judgment. Only when the water temperature and water level requirements are met, can the system enter the automatic mode.

[0062] 32) Standby

[0063] In this mode, the spray controller 13 receives a power-on signal from the whole machine controller 15 through the whole machine communication line 14, and the spray controller 13 starts timing. The internal program sets the automatic spray mode to start t1 seconds after the whole machine is turned on.

[0064] 33) Spray

[0065] The spray controller 13 sends a working signal to the spray water pump 21 through the spray pump control line 20. According to the working strategy set by the spray controller 13, the spray water pump 21 rotates forward continuously for t2 seconds, and transports the tap water in the water tank 6 to each nozzle 23 through the water tank outlet pipe 11, the water filter 12, the spray pump water inlet pipe 19 and the spray water pipe 22. The tap water is atomized and sprayed into the engine compartment, and the combustible dust floating around the engine 1 is moistened and then knocked down to the lower part of the whole machine. At the same time, the sprayed water mist greatly increases the air humidity in the engine compartment and reduces the air temperature in the engine compartment, which can not only reduce the concentration of combustible dust, but also destroy the spontaneous combustion conditions of combustible dust, thereby avoiding the risk of spontaneous combustion of combustible dust accumulation.

[0066] 34) Backdraft

[0067] In order to prevent ice from forming inside the spray system in cold environments, the spray controller 13 sets a working strategy. After the spray water pump 21 rotates forward continuously for t2 seconds, the spray controller 13 sends a reverse signal to the spray water pump 21 through the spray pump control line 20. The spray water pump 21 reverses for t3 seconds to suck the tap water in the spray water pipe 22 and each nozzle 23 back into the water storage tank 6 to prevent the pipe and nozzle 23 from freezing in a cold environment, which would affect the next use.

[0068] 35) Pause

[0069] After the back suction is completed, the spray controller 13 enters a standby state, and after being stationary for t4 seconds, it starts again to send a working signal and a back suction signal to the spray water pump 21, and enters the next working cycle.

[0070] 36) Loop

[0071] In automatic mode, the spray controller 13 monitors the system temperature and water temperature information in real time. Under working conditions, the system works as follows: after the whole machine starts for t1 second, it sprays for t2 seconds, sucks back for t3 seconds, stops for t4 seconds, and repeats the cycle.

[0072] 37) Stop

[0073] The whole machine is turned off and the power is cut off, the mode selection switch 17 is pressed into the middle position, and the spray controller 13 detects that the water temperature in the water tank 6 or any of the water temperatures does not meet the operating conditions. If any of the above situations occurs, the system stops working.

[0074] 4. Forced start mode

[0075] 41) Working mode selection and condition judgment

[0076] After the whole machine is started, the mode selection switch 17 is pressed to the right, and the spray controller 13 detects the system according to the above-mentioned water temperature judgment and water level judgment. The system can enter the forced start mode only after the water temperature and water level requirements are met.

[0077] 42) Spray

[0078] The mode selection switch 17 sends a forced start signal to the spray controller 13 through the mode signal line 16, and the spray controller 13 sends a working signal to the spray water pump 21 through the spray pump control line 20. According to the working strategy set by the spray controller 13, the spray water pump 21 continues to rotate forward for t2 seconds, and transports the tap water in the water tank 6 to each nozzle 23 through the water tank outlet pipe 11, the water filter 12, the spray pump inlet pipe 19 and the spray water pipe 22, and atomizes the tap water and sprays it into the engine compartment, which is the same as the spraying process in the automatic mode.

[0079] 43) Backdraft

[0080] In order to save water and avoid excessive humidity around the engine 1, the spray controller 13 sets a working strategy. After the spray pump 21 rotates forward for t2 seconds, the spray controller 13 sends a reverse signal to the spray pump 21 through the spray pump control line 20. The spray pump 21 reverses for t3 seconds to suck the tap water in the spray pipe 22 and each nozzle 23 back into the water storage tank 6 to prevent the pipe and nozzle 23 from freezing in a cold environment and affecting the next use. The reverse suction process is the same as in the automatic mode.

[0081] 44) Stop

[0082] In the forced start mode, the system stops working after performing spraying and back suction once. This mode is mainly used for manual detection of system functions, automatic spray mode failures, or other situations that require manual start. The forced start mode is only executed once. If multiple spraying is required, the mode selection switch 17 needs to be pressed multiple times.

[0083] The time setting values ​​used in the above description: standby time t1 second, spraying time t2 seconds, back suction time t3 seconds, and interval time t4 seconds can all be set according to the use conditions, dust concentration, air humidity and equipment conditions; if there is a special need for spraying, the mode selection switch 17 can be pressed to use the forced start mode for spraying.

Claims

1. A cabin spray system, characterized in that: The invention comprises an engine (1), a heating water pump (4), a water storage tank (6), a spray controller (13) and a spray water pump (21); the engine (1) is connected to the heating water pump (4) and the water storage tank (6) respectively; the heating water pump (4) is connected to the water storage tank (6); the spray controller (13) is connected to a temperature sensor (7) arranged on the water storage tank (6), the heating water pump (4) and the spray water pump (21) respectively; the water storage tank (6) is also connected to the spray water pump (21) through a water filter (12); the outlet of the spray water pump (21) is connected to a spray water pipe (22); and a spray head (23) is arranged on the spray water pipe (22).

2. The cabin spray system according to claim 1, characterized in that: The spray controller (13) is also connected to the whole machine controller (15) and the mode selection switch (17) respectively.

3. The cabin spray system according to claim 1, characterized in that: A water level sensor (8) is installed on the water storage tank (6), and the spray controller (13) is also connected to the water level sensor (8).

4. The cabin spray system according to claim 3, characterized in that: The water tank (6) comprises a water tank body (61), on which a water level sensor mounting seat (610) for mounting a water level sensor (8) and a temperature sensor mounting seat (68) for mounting a temperature sensor (7) are arranged, and a water heater (612) is arranged inside the water tank body (61).

5. The cabin spray system according to claim 4, characterized in that: The water storage tank body (61) is also provided with a cleaning window cover (62), a water inlet cover (63), a drain valve (64), a ball valve (65) and a water tank outlet connector (66), and the water tank outlet connector (66) is connected to the water filter (12).

6. The cabin spray system according to claim 4, characterized in that: The water-heating heater (612) comprises a water-heating heater core (6121), and two ends of the water-heating heater core (6121) are respectively connected to a heater water inlet (67) and a heater water outlet (69).

7. The cabin spray system according to claim 4, characterized in that: A box partition (611) is also provided inside the water storage tank box (61).

8. The cabin spray system according to any one of claims 1 to 7, characterized in that: The spray heads (23) are arranged on the left and right sides of the engine (1).

9. An engineering machine, characterized in that: The engineering machinery is provided with an in-cabin spray system as described in any one of claims 1-7.

10. The engineering machine according to claim 9, characterized in that: The water storage tank (6) is installed at the rear of the whole machine outside the engine compartment, and the mode selection switch (17) and the spray controller (13) are both installed inside the cab.

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