CN112252252A - One-key drainage system of sanitation vehicle and control method thereof - Google Patents
One-key drainage system of sanitation vehicle and control method thereof Download PDFInfo
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- CN112252252A CN112252252A CN202010943876.5A CN202010943876A CN112252252A CN 112252252 A CN112252252 A CN 112252252A CN 202010943876 A CN202010943876 A CN 202010943876A CN 112252252 A CN112252252 A CN 112252252A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
- E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
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Abstract
The invention discloses a one-key drainage system of a sanitation vehicle and a control method thereof, which only adopt a chassis air source for air supply and use an auxiliary air tank for air storage and pressurization, thereby reducing the number of the air source, saving the cost and the installation space, a gas path is divided into two paths after passing through a pressure reducing valve, one path is used for air blowing and drainage, and the other path is conveyed into a gas control box for controlling the opening or closing of a plurality of pneumatic elements in a pneumatic system, thereby realizing the multifunctional application of a single air source, simplifying the structural design of the gas path system, controlling the on-off of the air blowing and drainage gas path by controlling the opening or closing of an electromagnetic air valve, and the control of the pneumatic system is not influenced. Push away the absolute isolation in water route ball valve through the cylinder and realized gas circuit and water circuit, avoid appearing leading to the reverse condition that punctures pneumatic system in water route because of the valve inefficacy. And the whole blowing and draining operation process is automatically executed by the control of an electric control system, a valve does not need to be manually operated, the function of one-key water blowing is realized, and the intelligent degree is high.
Description
Technical Field
The invention relates to the technical field of air blowing and water draining of sanitation vehicles, in particular to a one-key water draining system of a sanitation vehicle, and in addition, the invention also particularly relates to a control method of the one-key water draining system of the sanitation vehicle.
Background
At present, almost all sanitation vehicles (cleaning vehicles, washing and sweeping vehicles, garbage can cleaning vehicles/stations, snow removal vehicles, dust suppression vehicles and the like) have the problem that water pipes, water pumps or water valves are damaged by freezing of residual water in a waterway during operation in winter, so that the residual water in the waterway needs to be completely removed after the operation is finished every time, and the safety of a waterway system on the vehicle is guaranteed.
In a conventional water blowing scheme, an outlet (high pressure) and an inlet (low pressure) of a high-pressure water pump are connected through a pneumatic ball valve or an electromagnetic air valve, and are impacted by high-pressure water at an outlet of the water pump and sucked back by negative pressure at an inlet of the water pump in the actual use process, and the pneumatic element is soaked in water for a long time to cause element damage and low reliability, so that a waterway system is possibly reversely flushed into an upper pneumatic system or even a chassis air circuit, and safety accidents are caused. Moreover, the pneumatic ball valves are manually operated, and the intelligent degree is low. For example, patent CN109797694A discloses a pipeline accumulated water cleaning system for a washing and sweeping vehicle, in which an air outlet of an electromagnetic air valve in a pneumatic accumulated water system is directly connected with a water channel, the electromagnetic air valve fails due to long-term immersion in water, and intelligent water blowing operation cannot be realized. Patent CN106436617A discloses a washing and sweeping vehicle intelligence air-blowing drainage anti-freezing system, it has adopted two sets of air supplies to blow water respectively to high pressure water route system and spraying dust fall system, but it does not also consider the isolation problem of air route system and water route system, the problem of the reverse puncture air route system of water route probably appears. Patent CN106286270A discloses a novel surplus water discharge of road surface cleaning vehicle water pump device, and it also has the problem that gas circuit system does not keep apart with waterway system equally, and can't realize intelligent water blowing operation.
Disclosure of Invention
The invention provides a one-key drainage system of a sanitation vehicle and a control method thereof, which are used for solving the technical problems that a pneumatic element in the existing blowing and drainage scheme is easy to lose effectiveness after being soaked in water for a long time, and a waterway system is likely to be reversely flushed into an upper pneumatic system or even a chassis air passage.
According to one aspect of the invention, the one-key drainage system of the sanitation vehicle comprises a manual air valve, an auxiliary air tank, a pressure reducing valve, an electromagnetic air valve, a filter, an air control box, an air cylinder waterway pushing ball valve, a water filter and an electric control system, wherein the manual air valve is arranged on a pipeline for communicating the auxiliary air tank with an air source of a chassis, the pressure reducing valve, the electromagnetic air valve and the air cylinder waterway pushing ball valve are sequentially arranged on a pipeline for communicating the auxiliary air tank with an inlet of the water filter, the pressure reducing valve is also communicated with the air control box through a pipeline, the filter is arranged on a pipeline for connecting the pressure reducing valve and the air control box, high-pressure air is divided into two paths after passing through the pressure reducing valve, one path is sequentially conveyed to the inlet of the water filter through the electromagnetic air valve and the air cylinder waterway pushing ball valve, the air cylinder waterway is separated from a water path through the air cylinder waterway pushing ball valve, the other, the water outlet of the water tank is also provided with an air cylinder water pushing path ball valve, the outlet of the water filter is respectively connected with a high-pressure water pump and a low-pressure water pump, the high-pressure water pump is connected with a high-pressure water path system, the low-pressure water pump is connected with a low-pressure water path system, pneumatic ball valves are arranged in water outlet pipelines and water outlets of the water filter in each path of water outlet pipelines of the high-pressure water path system and the low-pressure water path system, the air cylinder water pushing path ball valve and the pneumatic ball valves are both connected with an air control box, the air control box and the electromagnetic air valves are both electrically connected with an electric control system, and the electric control system controls the opening or closing of the air cylinder water pushing path ball valves;
when the air blowing and water discharging operation is carried out, the electric control system controls the cylinder water pushing path ball valve at the water discharging port of the water tank to be opened through the air control box to empty the residual water in the water tank, and then controls the high-pressure water path system, the low-pressure water path system and the pneumatic ball valve of the water filter to be opened to allow the water at a high position in the pipeline to automatically flow out; after a period of time, the electric control system controls the cylinder of the water tank drainage port to push the water way ball valve, the cylinder between the water filter and the water tank to push the water way ball valve and all the pneumatic ball valves to be closed, controls the cylinder between the auxiliary gas tank and the water filter to push the water way ball valve to be opened so as to communicate the gas path with the water path, controls at least one pneumatic ball valve among the high-pressure water path system, the low-pressure water path system and the water filter to be opened again, and finally controls the electromagnetic gas valve to be opened to blow water.
The electric control system is electrically connected with the electric control system, and the electric control system accurately acquires the current working state of the cylinder water pushing path ball valve according to the detection result of the position sensor so as to determine whether to execute the next action.
And the electronic control system controls the electromagnetic air valve to be closed to stop blowing water when the pressure sensor detects that the pressure value in the auxiliary air tank is lower than a threshold value, and controls the electromagnetic air valve to be opened to recover blowing water until the pressure value in the auxiliary air tank is greater than or equal to the threshold value.
Furthermore, a one-way valve is further arranged between the electromagnetic air valve and the cylinder water pushing path ball valve, so that a water path reverse impact air path is prevented after the water path ball valve in the cylinder water pushing path ball valve is out of work.
Furthermore, when the water blowing operation is performed every time, the electric control system only controls one pneumatic ball valve to be opened, and after the water blowing operation of the water outlet pipeline is completed, the preset time is delayed to control the other pneumatic ball valve to be opened so as to perform the water blowing operation of the next water outlet pipeline.
Furthermore, after all water outlet pipelines are blown with water, the electric control system controls the electromagnetic air valve to be closed, then controls the cylinder water-pushing path ball valve between the auxiliary air tank and the water filter to be closed to isolate the water path and the air path, and controls the cylinder water-pushing path ball valve between the water filter and the water tank to be opened to ensure that the water path system can normally work in the next working process.
Further, before cleaning operation is carried out each time, the electric control system checks whether the cylinder water pushing path ball valve between the auxiliary gas tank and the water filter and the cylinder water pushing path ball valve at the water tank drainage port are in a closed state or not through the position sensor, and whether the cylinder water pushing path ball valve between the water filter and the water tank is in an open state or not.
In addition, the invention also provides a control method of the one-key drainage system of the sanitation vehicle, which adopts the one-key drainage system and comprises the following steps:
step S1: controlling an air cylinder water pushing path ball valve at a water outlet of the water tank to be opened so as to empty residual water in the water tank;
step S2: controlling the high-pressure waterway system, the low-pressure waterway system and the pneumatic ball valve of the water filter to be opened, so that water at a high position in the pipeline flows out automatically;
step S3: controlling an air cylinder waterway pushing ball valve at a water outlet of the water tank, an air cylinder waterway pushing ball valve between the water filter and the water tank and all pneumatic ball valves to be closed, and controlling an air cylinder waterway pushing ball valve between the auxiliary air tank and the water filter to be opened so as to communicate the air passage with the waterway;
step S4: controlling at least one pneumatic ball valve in the high-pressure waterway system, the low-pressure waterway system and the water filter to be opened;
step S5: and controlling the electromagnetic air valve to open to blow water so as to blow out residual water remained at a low position in the water outlet pipeline.
Furthermore, when the cylinder waterway pushing ball valve is controlled to be opened or closed every time, the current state of the cylinder waterway pushing ball valve is confirmed through the corresponding position sensor, and whether the next action is executed or not is determined according to the confirmation result.
Further, the method also comprises the following steps:
step S6: after all water outlet pipelines are blown with water, the electromagnetic air valve is controlled to be closed, then the cylinder water pushing path ball valve between the auxiliary air tank and the water filter is controlled to be closed to isolate the water path and the air path, and the cylinder water pushing path ball valve between the water filter and the water tank is controlled to be opened to ensure that the water path system can normally work in the next working process.
The invention has the following effects:
the one-key drainage system of the sanitation vehicle only adopts the chassis air source for air supply, and carries out air storage and pressurization through the auxiliary air tank, the size of the auxiliary air tank can be selected according to the length and the pipe diameter of a pipeline in a water path, the number of the air sources is reduced, the cost and the installation space are saved, the air path is divided into two paths after the pressure reduction action of the pressure reducing valve, one path is used for air blowing and drainage, and the other path is conveyed into the air control box and used for controlling the opening or closing of a plurality of pneumatic elements in the pneumatic system, so that the multifunctional application of a single air source is realized, the structural design of the air path system is simplified, the on-off of the air blowing and drainage air path can be controlled by controlling the opening or closing of the electromagnetic air valve, and the air. And because the cylinder pushes away the structural feature of water route ball valve, can not appear soaking in aqueous for a long time and lead to the problem of inefficacy, realized the absolute isolation of gas circuit and water route, avoid appearing leading to the condition that the water route punctures pneumatic system in the opposite direction because of the valve inefficacy. And the whole blowing and draining operation process is automatically executed by the control of an electric control system, a valve does not need to be manually operated, the function of one-key water blowing is realized, and the intelligent degree is high.
In addition, the control method of the one-key drain system of the sanitation vehicle also has the advantages.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a piping diagram of a one-touch drain system of a sanitation vehicle in accordance with a preferred embodiment of the present invention.
Fig. 2 is a flowchart illustrating a method for controlling a one-touch drain system of a sanitation vehicle according to another embodiment of the present invention.
Description of the reference numerals
1. A manual air valve; 2. an auxiliary gas tank; 3. a pressure reducing valve; 4. an electromagnetic gas valve; 5. a one-way valve; 6. a filter; 7. a pneumatic control box; 8. a cylinder water pushing path ball valve; 9. a position sensor; 10. a water tank; 11. a high pressure water pump; 12. a low-pressure water pump; 13. a high pressure waterway system; 14. a low pressure waterway system; 15. water filtration; 16. a pneumatic ball valve; 17. an electronic control system; 18. a pressure sensor.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
As shown in fig. 1, a preferred embodiment of the present invention provides a one-key drainage system for a sanitation vehicle, which includes a manual air valve 1, an auxiliary air tank 2, a pressure reducing valve 3, an electromagnetic air valve 4, a filter 6, a pneumatic control box 7, an air cylinder water-pushing path ball valve 8, a water filter 15 and an electric control system 17, wherein the manual air valve 1 is arranged on a pipeline through which the auxiliary air tank 2 is communicated with an air source of a chassis, the pressure reducing valve 3, the electromagnetic air valve 4 and the air cylinder water-pushing path ball valve 8 are sequentially arranged on a pipeline through which the auxiliary air tank 2 is communicated with an inlet of the water filter 15, the pressure reducing valve 3 is further communicated with the pneumatic control box 7 through a pipeline, and the filter. The air circuit system is characterized in that after air is taken from a chassis air source, the air circuit system enters an auxiliary air tank 2 through a manual air valve 1, after the auxiliary air tank 2 is cooled and stored and boosted, the air is decompressed to the pressure required by the system through a pressure reducing valve 3 and then is divided into two paths, one path of air is conveyed to an inlet of a water filter 15 through an electromagnetic air valve 4 and an air cylinder water pushing path ball valve 8 in sequence, the air path and the water path are isolated through the air cylinder water pushing path ball valve 8, the other path of air is conveyed to an air control box 7 through a filter 6, the air control box 7 is connected with a plurality of pneumatic elements in the pneumatic system, and the opening or closing of the pneumatic elements can be controlled by controlling the. The cylinder water-pushing path ball valve 8 is different from the existing pneumatic ball valve, the existing pneumatic ball valve is wholly soaked in water, only one water-stop film exists between a pneumatic actuator and a gas path ball valve, and the element fails due to long-term soaking in water because the applicable environment of the ball valve in a pneumatic system requires a water-free and dust-free state, once the gas path ball valve and the water-stop film are damaged, water flow in a water path can reversely impact the pneumatic actuator to further flush the pneumatic system or even a chassis gas source, so that safety accidents are easily caused, but the cylinder water-pushing path ball valve 8 adopts an external cylinder to push the water path ball valve, only the water path ball valve is soaked in water, the cylinder is in a water-free environment, and the water path ball valve cannot fail due to long-term soaking in water because the applicable environment of the water path ball valve is a water environment, the reliability is higher, and the pneumatic actuator who adopts is external cylinder, even the water route ball valve became invalid, rivers in the water route also can not assault the cylinder, have ensured the absolute isolation of water route system and gas circuit system.
The water filter comprises a water filter 15, and is characterized in that a cylinder water pushing path ball valve 8 is also arranged on a pipeline connecting an inlet of the water filter 15 and a water tank 10, a cylinder water pushing path ball valve 8 is also arranged at a water outlet of the water tank 10, an outlet of the water filter 15 is respectively connected with a high-pressure water pump 11 and a low-pressure water pump 12, the high-pressure water pump 11 is connected with a high-pressure water path system 13, the low-pressure water pump 12 is connected with a low-pressure water path system 14, pneumatic ball valves 16 are respectively arranged at water outlets of water filters 15 in water outlet pipelines of the high-pressure water path system 13 and the low-pressure water path system 14, the cylinder water pushing path ball valve 8 and the pneumatic ball valves 16 are both connected with a pneumatic control box 7, namely, each pneumatic element is connected with the pneumatic control box 7, and an electromagnetic. And, the pneumatic control box 7 and the electromagnetic air valves 4 are electrically connected with an electric control system 17, and the electric control system 17 can control the opening or closing of the water pushing path ball valves 8 and the pneumatic ball valves 16 of the cylinders by controlling the on-off of the electromagnetic air valves in the pneumatic control box 7, so that the automatic operation of air blowing and water draining is conveniently realized. The electric control system 17 controls the on-off of the air blowing and water discharging air path by controlling the opening or closing of the electromagnetic air valve 4, when the electromagnetic air valve 4 is controlled to be closed, the air blowing and water discharging air path is disconnected, and the control of the pneumatic element of the pneumatic system is not affected, so that the pneumatic system can work normally. The water outlet pipeline of the high-pressure waterway system 13 specifically comprises a water pump unloading pipeline, a right spray rod water outlet pipeline, a left spray rod water outlet pipeline, a suction nozzle water outlet pipeline and a garbage box self-cleaning water outlet pipeline, and a pneumatic ball valve 16 is arranged on each of the five water outlet pipelines to control the on-off of the pipelines.
When the air blowing and water discharging operation is carried out, the electric control system 17 controls the cylinder water pushing path ball valve 8 at the water discharging port of the water tank 10 to be opened through the air control box 7 to discharge the residual water in the water tank 10, and then controls the pneumatic ball valves 16 of the high-pressure water path system 13, the low-pressure water path system 14 and the water filter 15 to be opened to allow the water at a high position in the pipeline to automatically flow out, wherein the water discharging stage is an automatic flow stage; after a period of time, namely after the gravity flow stage is finished, the electric control system 17 controls the cylinder water-pushing path ball valve 8 at the water outlet of the water tank 10, the cylinder water-pushing path ball valve 8 between the water filter 15 and the water tank 10 and all the pneumatic ball valves 16 to be closed, controls the cylinder water-pushing path ball valve 8 between the auxiliary gas tank 2 and the water filter 15 to be opened so as to communicate the gas path with the water path, controls at least one pneumatic ball valve 16 among the high-pressure water path system 13, the low-pressure water path system 14 and the water filter 15 to be opened, and finally controls the electromagnetic gas valve 4 to be opened to perform gas blowing and water discharging operation, so that water remained at the lower part in each water pipe is blown away, and the safety of the water path system. The whole blowing and draining operation process is controlled by the electric control system 17 to be automatically executed, and one-key draining operation can be realized by programming a control program in advance.
It can be understood that the one-key drainage system only adopts the air supply of the chassis air source, and the air storage and pressurization are carried out by the auxiliary air tank 2, the size of the auxiliary air tank 2 can be selected according to the length and the pipe diameter of the pipeline in the water path, the number of the air source is reduced, the cost and the installation space are saved, the air path is divided into two paths after the decompression action of the decompression valve 3, one path is used for air blowing and drainage, the other path is conveyed into the air control box 7 to control the opening or closing of a plurality of pneumatic elements in the pneumatic system, the multifunctional application of a single air source is realized, the structural design of the air path system is simplified, the on-off of the air blowing and drainage air path can be controlled by controlling the opening or closing of the electromagnetic air valve 4, and the air. And, because the cylinder pushes away the structural feature of water route ball valve 8, can not appear soaking in aqueous for a long time and lead to the problem of inefficacy, realize the absolute isolation of gas circuit and water route, avoid appearing leading to the reverse condition of puncturing pneumatic system of water route because of the valve inefficacy. In addition, the whole blowing and draining operation process is controlled by the electric control system 17 to be automatically executed, a valve does not need to be manually operated, the one-key water blowing function is realized, and the intelligent degree is high. In addition, it can be understood that the purpose of the setting of the manual air valve 1 is to prevent sanitation workers from simultaneously pumping water and blowing air due to the fact that a water blowing button is turned on by misoperation during cleaning operation, and further to cause safety accidents, of course, in order to achieve complete intellectualization, the manual air valve 1 can be set to be in a normally open state, or the manual air valve 1 is replaced by an electromagnetic air valve, and the automatic opening or closing of the manual air valve is controlled by the electronic control system 17.
Preferably, the one-key drainage system further comprises position sensors 9 for detecting the opening state and the closing state of the cylinder waterway pushing ball valve 8, each cylinder waterway pushing ball valve 8 is correspondingly provided with one position sensor 9, the position sensors 9 can detect whether the cylinder waterway pushing ball valve 8 is in the opening state or the closing state at present, the position sensors 9 are electrically connected with the electronic control system 17, the electronic control system 17 accurately obtains the current working state of the cylinder waterway pushing ball valve 8 according to the detection result of the position sensors 9 to determine whether to execute the next action, namely, the electronic control system 17 confirms the current state of the cylinder waterway pushing ball valve 8 through the position sensors 9 and controls to execute the next action after confirming that no fault exists. The one-key drainage system of the invention also checks the current state of the cylinder water pushing path ball valve 8 through the position sensor 9 to determine whether to execute the next action, thereby further ensuring the safety of the whole blowing and drainage operation process.
Preferably, the one-key water drainage system further comprises a pressure sensor 18 for detecting a pressure value in the auxiliary gas tank 2, the pressure sensor 18 is electrically connected with the electronic control system 17, when the pressure sensor 18 detects that the pressure value in the auxiliary gas tank 2 is lower than a threshold value, the electronic control system 17 controls the electromagnetic gas valve 4 to be closed to stop blowing water, and when the pressure value in the auxiliary gas tank 2 is larger than or equal to the threshold value, the electronic control system controls the electromagnetic gas valve 4 to be opened to recover blowing water. Because only a chassis air source is used as a single air source, the one-key water discharging system also detects the pressure value in the auxiliary air tank 2 through the pressure sensor 18, if the pressure value is too low, the air blowing and water discharging effects are poor, therefore, in the air blowing and water discharging processes, if the pressure value in the auxiliary air tank 2 is detected to be lower than the threshold value, the pressure sensor 18 outputs a signal to the electric control system 17, the electric control system 17 controls the electromagnetic air valve 4 to be closed, the air blowing is stopped, the chassis air source is enabled to continuously inflate the auxiliary air tank 2 until the pressure value in the auxiliary air tank 2 is larger than or equal to the threshold value, the electromagnetic air valve 4 is controlled to be opened, the air blowing and water discharging operations are carried out again, and the air.
Preferably, a one-way valve 5 is further arranged between the electromagnetic air valve 4 and the cylinder waterway pushing ball valve 8 to prevent the waterway ball valve in the cylinder waterway pushing ball valve 8 from reversely impacting the air passage after the waterway ball valve fails due to the fact that the service life of the waterway ball valve is prolonged, so that the isolation of the air passage and the waterway is further ensured, and the reliability of the one-key drainage system is improved.
In addition, considering that the capacity of the auxiliary air tank 2 is limited, the displacement of the chassis air compressor is also small, and the supplied air flow is limited, when the water blowing operation is performed each time, the electronic control system 17 only controls one pneumatic ball valve 16 to be opened, the water blowing operation is stopped after the water blowing operation of the water outlet pipeline of the path is completed, the air compressor is enabled to inflate the auxiliary air tank 2 after the preset time is delayed, and when the pressure value in the auxiliary air tank 2 reaches the threshold value, the other pneumatic ball valve 16 is controlled to be opened to perform the water blowing operation of the water outlet pipeline of the next path. Of course, in other embodiments of the present invention, if the capacity of the auxiliary gas tank 2 is large enough, two or even multiple pneumatic ball valves 16 may be controlled to open simultaneously, so as to realize simultaneous blowing and draining of multiple water outlet pipelines.
In addition, after all water outlet pipelines are blown with water, the electric control system 17 firstly controls the electromagnetic air valve 4 to be closed, the air channel supply is cut off, then controls the cylinder water pushing path ball valve 8 between the auxiliary air tank 2 and the water filter 15 to be closed to isolate the water channel and the air channel, and controls the cylinder water pushing path ball valve 8 between the water filter 15 and the water tank 10 to be opened to ensure that the water channel system can normally work in the next work.
It can be understood that, before cleaning operation is carried out at every turn, electrical system 17 passes through position sensor 9 inspection auxiliary gas jar 2 and water and strains the cylinder between 15 and push away water route ball valve 8, the cylinder of water tank 10 delivery port department pushes away water route ball valve 8 and is in the off-state, and water is strained the cylinder between 15 and the water tank 10 and is pushed away water route ball valve 8 and be in the on-state, it cleans the operation again after confirming no mistake, it pushes away water route ball valve 8 and be in the on-state and lead to the water route to strike the gas circuit to prevent auxiliary gas jar 2 and water and strain the cylinder between 15 and water and push away water route ball valve 8 and be in the on-state and lead to water tank 10 drainage, the cylinder of water between 15 and the water tank 10 pushes away water route ball valve 8 and is in.
In addition, as shown in fig. 2, the present invention also provides a control method of a one-touch drain system of a sanitation vehicle, which adopts the one-touch drain system as described above, and comprises the steps of:
step S1: controlling the cylinder water pushing path ball valve 8 at the water outlet of the water tank 10 to open to drain the residual water in the water tank 10;
step S2: controlling the pneumatic ball valve 16 of the high-pressure waterway system 13, the low-pressure waterway system 14 and the water filter 15 to be opened, and allowing water at a high position in the pipeline to automatically flow out;
step S3: controlling the cylinder waterway pushing ball valve 8 at the water outlet of the water tank 10, the cylinder waterway pushing ball valve 8 between the water filter 15 and the water tank 10 and all the pneumatic ball valves 16 to be closed, and controlling the cylinder waterway pushing ball valve 8 between the auxiliary gas tank 2 and the water filter 15 to be opened to communicate the gas path with the water path;
step S4: controlling at least one pneumatic ball valve 16 in the high-pressure waterway system 13, the low-pressure waterway system 14 and the water filter 15 to be opened;
step S5: and controlling the electromagnetic air valve 4 to be opened to blow out the residual water remained at the low position in the water outlet pipeline.
The control method of the one-key water drainage system of the sanitation vehicle has the advantages that the whole air blowing and water drainage operation process is automatically executed under the control of the electric control system 17, a valve does not need to be manually operated, the one-key water blowing function is realized, and the intelligent degree is high.
In addition, when the cylinder water pushing path ball valve 8 is controlled to be opened or closed each time, the current state of the cylinder water pushing path ball valve 8 is confirmed through the corresponding position sensor 9, whether the next action is executed or not is determined according to the confirmation result, and the safety of the air blowing and water draining operation is ensured.
In addition, after the air blowing and water discharging operation is started, the pressure value in the auxiliary air tank 2 is monitored in real time through the pressure sensor 18, once the pressure value is detected to be lower than the threshold value, the electromagnetic air valve 4 is controlled to be closed, the water blowing is stopped, and the electromagnetic air valve 4 is controlled to be opened again to continue the water blowing until the pressure value in the auxiliary air tank 2 is detected to be larger than or equal to the threshold value.
In addition, considering that the capacity of the auxiliary air tank 2 is limited, the displacement of the chassis air compressor is small, the supplied air flow is limited, only one pneumatic ball valve 16 is controlled to be opened when water blowing operation is performed once, the water blowing operation is stopped after the water blowing of the water outlet pipeline of the pipeline is completed, the air compressor is enabled to inflate the auxiliary air tank 2 after a preset time is delayed, and after the pressure value in the auxiliary air tank 2 reaches a threshold value, the other pneumatic ball valve 16 is controlled to be opened to perform the water blowing operation of the next water outlet pipeline. Of course, in other embodiments of the present invention, if the capacity of the auxiliary gas tank 2 is large enough, two or even multiple pneumatic ball valves 16 may be controlled to open simultaneously, so as to realize simultaneous blowing and draining of multiple water outlet pipelines.
In addition, the control method of the one-touch drain system of the sanitation vehicle further comprises the steps of:
step S6: after all water outlet pipelines are blown with water, the electromagnetic air valve 4 is controlled to be closed, then the cylinder water pushing path ball valve 8 between the auxiliary air tank 2 and the water filter 15 is controlled to be closed to isolate a water path and an air path, and the cylinder water pushing path ball valve 8 between the water filter 15 and the water tank 10 is controlled to be opened to ensure that a water path system can work normally in the next working process.
In addition, before cleaning operation is carried out each time, the position sensor 9 is used for detecting whether the cylinder water pushing path ball valve 8 between the auxiliary gas tank 2 and the water filter 15, whether the cylinder water pushing path ball valve 8 at the water outlet of the water tank 10 is in a closed state, whether the cylinder water pushing path ball valve 8 between the water filter 15 and the water tank 10 is in an open state, cleaning operation is carried out after no error is confirmed, the cylinder water pushing path ball valve 8 between the auxiliary gas tank 2 and the water filter 15 is prevented from being in an open state to cause a water path to impact a gas path, the cylinder water pushing path ball valve 8 at the water outlet of the water tank 10 is in an open state to cause the water tank 10 to drain, and the cylinder water pushing path ball valve 8 between the water filter 15 and the water tank 10 is in a.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A one-touch drain system of a sanitation vehicle,
the device comprises a manual air valve (1), an auxiliary air tank (2), a pressure reducing valve (3), an electromagnetic air valve (4), a filter (6), a pneumatic control box (7), an air cylinder water pushing path ball valve (8), a water filter (15) and an electric control system (17), wherein the manual air valve (1) is arranged on a pipeline communicated with a chassis air source of the auxiliary air tank (2), the pressure reducing valve (3), the electromagnetic air valve (4) and the air cylinder water pushing path ball valve (8) are sequentially arranged on a pipeline communicated with an inlet of the water filter (15), the pressure reducing valve (3) is also communicated with the pneumatic control box (7) through a pipeline, the filter (6) is arranged on a pipeline connected with the auxiliary air tank (2) and the inlet of the water filter (15), high-pressure gas is divided into two paths after passing through the pressure reducing valve (3), one path of the high-pressure gas is sequentially conveyed to the inlet of the water filter (15) through the electromagnetic air valve (4, another way is conveyed to a pneumatic control box (7) through a filter (6), a cylinder water pushing path ball valve (8) is also arranged on a pipeline connecting an inlet of a water filter (15) and a water tank (10), a cylinder water pushing path ball valve (8) is also arranged at a water outlet of the water tank (10), an outlet of the water filter (15) is respectively connected with a high-pressure water pump (11) and a low-pressure water pump (12), the high-pressure water pump (11) is connected with a high-pressure water path system (13), the low-pressure water pump (12) is connected with a low-pressure water path system (14), pneumatic ball valves (16) are arranged at water outlets of the water filter (15) in each way of water outlet pipelines of the high-pressure water path system (13) and the low-pressure water path system (14), the cylinder water pushing path ball valves (8) and the pneumatic ball valves (16) are both connected with the pneumatic control box (7), and the pneumatic valve (4) are both electrically connected with an electric control system (, the electric control system (17) controls the opening or closing of the water pushing path ball valve (8) and the pneumatic ball valve (16) of each cylinder by controlling the on-off of each electromagnetic air valve in the pneumatic control box (7);
when the air blowing and water discharging operation is carried out, the electric control system (17) controls the cylinder water pushing path ball valve (8) at the water discharging port of the water tank (10) to be opened through the air control box (7) so as to empty residual water in the water tank (10), and then controls the pneumatic ball valves (16) of the high-pressure water path system (13), the low-pressure water path system (14) and the water filter (15) to be opened so as to enable water at a high position in a pipeline to automatically flow out; after a period of time, the electric control system (17) controls the cylinder at the water outlet of the water tank (10) to push the waterway ball valve (8), the cylinder between the water filter (15) and the water tank (10) to push the waterway ball valve (8), and all the pneumatic ball valves (16) are closed, and controls the cylinder between the auxiliary gas tank (2) and the water filter (15) to push the waterway ball valve (8) to be opened so as to communicate the gas path with the waterway, controls the high-pressure waterway system (13), the low-pressure waterway system (14) and at least one pneumatic ball valve (16) in the water filter (15) to be opened, and finally controls the electromagnetic gas valve (4) to be opened to blow water.
2. The one-touch drain system of a sanitation vehicle of claim 1,
still including position sensor (9) that is used for detecting the opening state and the closure state of cylinder water route ball valve (8) of pushing away, every cylinder water route ball valve (8) of pushing away corresponds sets up a position sensor (9), position sensor (9) and electrical system (17) electric connection, electrical system (17) accurately acquire the current operating condition of cylinder water route ball valve (8) in order to decide whether to carry out action on next step according to the testing result of position sensor (9).
3. The one-touch drain system of a sanitation vehicle of claim 1,
still including pressure sensor (18) that is used for detecting supplementary gas pitcher (2) internal pressure value, pressure sensor (18) and electrical system (17) electric connection, when pressure sensor (18) detected the pressure value in supplementary gas pitcher (2) and is less than the threshold value, electrical system (17) control electromagnetism pneumatic valve (4) are closed in order to stop blowing water, and again control electromagnetism pneumatic valve (4) and open in order to resume blowing water when the pressure value in supplementary gas pitcher (2) is more than or equal to the threshold value.
4. The one-touch drain system of a sanitation vehicle of claim 1,
a check valve (5) is further arranged between the electromagnetic air valve (4) and the cylinder water pushing path ball valve (8) to prevent a water path from reversely impacting an air path after the water path ball valve in the cylinder water pushing path ball valve (8) is failed.
5. The one-touch drain system of a sanitation vehicle as set forth in claim 3,
when the water blowing operation is carried out once, the electric control system (17) only controls one pneumatic ball valve (16) to be opened, and after the water blowing operation of the water outlet pipeline is finished, the preset time is delayed to control the other pneumatic ball valve (16) to be opened so as to carry out the water blowing operation of the next water outlet pipeline.
6. The one-touch drain system of a sanitation vehicle of claim 2,
after all water outlet pipelines are blown with water, the electric control system (17) controls the electromagnetic air valve (4) to be closed, then controls the cylinder water pushing path ball valve (8) between the auxiliary air tank (2) and the water filter (15) to be closed to isolate a water path and an air path, and controls the cylinder water pushing path ball valve (8) between the water filter (15) and the water tank (10) to be opened to ensure that the water path system can normally work in the next working process.
7. The one-touch drain system of a sanitation vehicle of claim 6,
before cleaning operation is carried out each time, the electric control system (17) checks whether the cylinder water-pushing path ball valve (8) between the auxiliary gas tank (2) and the water filter (15) and the cylinder water-pushing path ball valve (8) at the water outlet of the water tank (10) are in a closed state or not through the position sensor (9), and whether the cylinder water-pushing path ball valve (8) between the water filter (15) and the water tank (10) are in an open state or not.
8. A control method of a one-touch drain system of a sanitation vehicle, which adopts the one-touch drain system as claimed in any one of claims 1 to 7,
the method comprises the following steps:
step S1: controlling an air cylinder waterway pushing ball valve (8) at a water outlet of the water tank (10) to be opened so as to empty residual water in the water tank (10);
step S2: controlling a pneumatic ball valve (16) of the high-pressure waterway system (13), the low-pressure waterway system (14) and the water filter (15) to be opened, and allowing water at a high position in the pipeline to flow out automatically;
step S3: controlling an air cylinder waterway pushing ball valve (8) at a water outlet of the water tank (10), an air cylinder waterway pushing ball valve (8) between the water filter (15) and the water tank (10) and all pneumatic ball valves (16) to be closed, and controlling the air cylinder waterway pushing ball valve (8) between the auxiliary air tank (2) and the water filter (15) to be opened to communicate the air passage with the waterway;
step S4: controlling at least one pneumatic ball valve (16) in the high-pressure waterway system (13), the low-pressure waterway system (14) and the water filter (15) to be opened;
step S5: and controlling the electromagnetic air valve (4) to be opened to blow out the residual water remained at the low position in the water outlet pipeline.
9. The method of controlling a one-touch drain system of a sanitation vehicle as set forth in claim 8,
and when the cylinder water pushing path ball valve (8) is controlled to be opened or closed every time, the current state of the cylinder water pushing path ball valve (8) is confirmed through the corresponding position sensor (9), and whether the next action is executed or not is determined according to the confirmation result.
10. The method of controlling a one-touch drain system of a sanitation vehicle as set forth in claim 8,
further comprising the steps of:
step S6: after all water outlet pipelines are blown with water, the electromagnetic air valve (4) is controlled to be closed, then the cylinder water pushing path ball valve (8) between the auxiliary air tank (2) and the water filter (15) is controlled to be closed to isolate a water path and an air path, and the cylinder water pushing path ball valve (8) between the water filter (15) and the water tank (10) is controlled to be opened to ensure that a water path system can normally work in the next working process.
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