CN113818387A - Suction vehicle, suction system for suction vehicle and vacuum degree control method of suction system - Google Patents
Suction vehicle, suction system for suction vehicle and vacuum degree control method of suction system Download PDFInfo
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- CN113818387A CN113818387A CN202111163436.9A CN202111163436A CN113818387A CN 113818387 A CN113818387 A CN 113818387A CN 202111163436 A CN202111163436 A CN 202111163436A CN 113818387 A CN113818387 A CN 113818387A
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- suction
- storage tank
- vacuum
- rotating speed
- valve
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/10—Wheeled apparatus for emptying sewers or cesspools
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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
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/8816—Mobile land installations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Architecture (AREA)
- Sewage (AREA)
Abstract
The invention discloses a suction vehicle, a suction system for the suction vehicle and a vacuum degree control method thereof in the technical field of environmental sanitation equipment, wherein the suction system for the suction vehicle comprises a storage tank, and an inlet of the storage tank is communicated with a first pipeline; the outlet of the storage tank is communicated with a second pipeline; an inlet of the vacuum fan is communicated with the second pipeline; and the emptying valve is arranged on the second pipeline. The suction system for the suction vehicle can adjust the vacuum degree of the storage tank according to the operation condition of the system by additionally arranging the emptying valve, so that the energy consumption of the system is reduced.
Description
Technical Field
The invention belongs to the technical field of environmental sanitation equipment, and particularly relates to a suction vehicle, a suction system for the suction vehicle and a vacuum degree control method of the suction system.
Background
Suction vehicles such as sewage suction vehicles, excavating suction vehicles, dust vehicles and the like generally utilize a negative pressure suction principle, form a certain vacuum degree in a storage tank through a negative pressure fan or a vacuum pump, form pressure difference with the external environment, and press and convey materials to be sucked into a tank body. The negative pressure fans or vacuum pumps are different, the vacuum degrees (highest negative pressure) formed in the tank body are different, and the suction capacity is different. For the same system, the higher the vacuum level, the stronger the pumping capacity, the more power and energy consumed. In the prior art, the vacuum degree in the storage tank is not adjustable, once the pumping operation starts, the system always operates at the maximum working load, and the energy consumption is large.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a suction vehicle, a suction system for the suction vehicle and a vacuum degree control method thereof, which can adjust the vacuum degree of a storage tank according to the operation condition of the system and reduce the energy consumption of the system.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, there is provided a suction system for a suction vehicle, comprising: the inlet of the storage tank is communicated with the first pipeline; the outlet of the storage tank is communicated with a second pipeline; an inlet of the vacuum fan is communicated with the second pipeline; and the emptying valve is arranged on the second pipeline.
Further, a suction valve is installed between the inlet of the storage tank and the first pipeline.
Further, a discharge valve is installed between the outlet of the storage tank and the second pipeline.
Furthermore, a dust removal box is arranged on a second pipeline between the emptying valve and the inlet of the vacuum fan.
Further, a safety valve is installed on the dust removal box.
The vacuum degree detection device further comprises a pressure sensor and a controller, wherein the pressure sensor is mounted at the top of the storage tank and used for detecting the vacuum degree in the storage tank; the controller is respectively electrically connected with the vacuum fan, the emptying valve and the pressure sensor.
Further, the touch screen display is electrically connected with the controller.
In a second aspect, there is provided a suction vehicle equipped with the suction system for a suction vehicle of the first aspect.
And the third aspect provides a vacuum degree control method of the suction system for the suction vehicle, wherein the opening pressure of the emptying valve and the working rotating speed of the vacuum fan are set according to the operating condition of the suction system for the suction vehicle, so that the material storage tank has different vacuum degrees under different operating conditions.
Further, the operation conditions comprise a first operation condition, a second operation condition and a third operation condition; under the first operation working condition, the opening pressure of the emptying valve is 40% -50% of the maximum working negative pressure of the material storage tank, and the working rotating speed of the vacuum fan is the optimal working rotating speed determined according to the negative pressure and rotating speed optimal curve of the vacuum fan; under the second operation working condition, the opening pressure of the emptying valve is 60-70% of the maximum working negative pressure of the material storage tank, and the working rotating speed of the vacuum fan is adjusted to be the optimal working rotating speed determined according to the negative pressure and rotating speed optimal curve of the vacuum fan; and under the third operation working condition, the opening pressure of the emptying valve is the maximum working negative pressure of the material storage tank, and the rotating speed of the vacuum fan is adjusted to be the maximum working rotating speed.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the emptying valve is arranged on the pipeline of the suction system, so that the vacuum degree of the storage tank can be adjusted according to different operation conditions of the system, the optimal working rotating speed of the fan is matched, and the energy consumption of the system is reduced;
(2) the emptying valve is manually opened or automatically opened, and the fan or the vacuum pump is not closed under the condition of short-time non-work, so that the safety of a suction port is ensured, and the energy loss caused by frequently opening and closing the fan or the vacuum pump is avoided;
(3) the emptying valve and the safety valve are matched to play a role in dual-redundancy protection, so that the safety of the system is improved;
(4) the anti-overflow device has the advantages that through the matching of the suction valve and the discharge valve, the anti-overflow effect in transportation is achieved, and the safety of vehicle running is improved;
(5) according to the invention, through the matching of the suction valve and the discharge valve, the sealing effect of the storage tank can be tested, and the potential safety hazard caused by leakage is prevented.
Drawings
Fig. 1 is a schematic structural diagram of a system for pumping a pumping system for a vehicle according to an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a control flow diagram of a vacuum degree control method of a suction system for a suction vehicle according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in fig. 1 and 2, a suction system for a suction vehicle comprises a storage tank 3, a vacuum fan (or vacuum pump) 1 and an air release valve 8, wherein an inlet of the storage tank 3 is communicated with a first pipeline 4; the outlet of the storage tank 3 is communicated with the second pipeline 2; the inlet of the vacuum fan 1 is communicated with the second pipeline 2; a vent valve 8 is mounted on the second conduit 2. The first duct 4 is used for sucking the external medium; the second pipeline 2 is used for connecting the vacuum fan 1 and the material storage tank 3.
An intake valve 6 is arranged between the inlet of the storage tank 3 and the first pipeline 4, for a vacuum pump system, the intake valve 6 is closed before starting up, so that the negative pressure of the storage tank 3 can be rapidly increased, and the intake valve 6 is opened after the vacuum degree of the storage tank 3 reaches a set value, so that the suction efficiency can be improved; for a negative pressure fan system, the principle of negative pressure suction and pneumatic transmission is mainly adopted, and the negative pressure in the material storage tank is improved without closing the valve. The other function of the valve is anti-overflow, namely the valve is closed in the transportation process, so that the liquid in the storage tank can be prevented from overflowing from the first pipeline (suction pipe) 4 in the processes of ascending, descending and emergency braking of the vehicle, the road environment is polluted, and the potential safety hazard is avoided.
A discharge valve 7 is arranged between the outlet of the storage tank 3 and the second pipeline 4, and the main function of the valve is anti-overflow, namely the valve is closed in the transportation process, so that the liquid in the storage tank can be prevented from flowing into a vacuum fan or a vacuum pump from the second pipeline 2 in the processes of ascending and descending of a vehicle and emergency braking, and the vacuum fan or the vacuum pump is prevented from being damaged; during transportation, the valve is matched with the suction valve 6 and closed for use, so that materials can be limited in the material storage tank. The valve and the suction valve 6 are matched for use, and a high negative pressure test can be performed on the tank body, and the specific test method comprises the following steps: and closing the suction valve 6, opening the vacuum fan or the vacuum pump, closing the discharge valve 7 when the negative pressure in the material storage tank reaches a certain value, closing the vacuum fan or the vacuum pump, performing pressure maintaining test on the material storage tank, and verifying whether the material storage tank has an air leakage point.
Install dust removal case 5 on the second pipeline between the entry of atmospheric valve 8 and vacuum fan 1, dust removal case 5 is used for carrying out gas-solid separation to vacuum fan 1's the admitting air, prevents that the solid from getting into vacuum fan 1 and causing vacuum fan 1 to damage. A safety valve 9 is arranged on the dust removing box 5, and the safety valve 9 can also be arranged on an inlet pipeline of the vacuum fan (or vacuum pump) 1, namely the second pipeline 2 in the embodiment; in this embodiment, the safety valve 9 is a mechanical safety valve, and mainly through a preset pre-tightening force of a spring, when the system reaches a maximum negative pressure allowed by the system, the spring is pushed open by external air pressure, and air enters the pipeline to protect the vacuum fan or the vacuum pump.
In this embodiment, the suction valve 6, the discharge valve 7 and the atmospheric valve 8 are all pneumatic valves, and may also be electric valves, and all may be opened, closed and the opening degree adjusted through a manual manner.
The vacuum-degree detection device further comprises a pressure sensor 31 and a controller, wherein the pressure sensor 31 is installed at the top of the storage tank 3 and used for detecting the vacuum degree in the storage tank 3; the controller is electrically connected with the vacuum fan 1, the emptying valve 8 and the pressure sensor 31, and the suction valve 6 and the discharge valve 7 respectively.
In the embodiment, the opening pressure of the emptying valve and the working speed of the vacuum fan are set according to the operating condition of the suction system for the suction vehicle, so that the storage tank has different vacuum degrees under different operating conditions; under general conditions, the cracking pressure of atmospheric valve 8 is less than or equal to the cracking pressure of relief valve 9 (the cracking pressure of relief valve 9 is the biggest work negative pressure of storage tank), and atmospheric valve 8 can open through the switch is manual, also can open through the automatic opening of procedure setting, can play a plurality of effects, mainly includes following several: 1) opening pressure sets up to = the opening pressure of relief valve 9, can replace the relief valve when the relief valve trouble, opens automatically, has played the effect of dual redundancy protection fan with the relief valve cooperation, prevents that system's pressure is too high, improves system security nature. 2) In the process of pumping operation, under the condition of pumping position adjustment or other short-time non-working conditions, the vacuum fan or the vacuum pump can be not closed, the valve is manually opened, and meanwhile, the rotating speed of the fan is automatically reduced to an idle speed through program setting, so that the system pressure can be reduced to a lower level, thereby not only reducing the pressure of a pumping port and preventing the occurrence of accidents, but also avoiding the energy loss caused by frequently switching the vacuum fan or the vacuum pump; when the suction work is carried out again, the valve is manually closed, and the rotating speed of the vacuum fan is automatically restored to the original working rotating speed; 3) aiming at different operating conditions, the opening value of the emptying valve can be set to different values through program setting, so that the maximum vacuum degree value of the suction system can be limited according to the operating conditions, the optimal working rotating speed of the fan is automatically matched, the fan is prevented from working at the maximum capacity all the time, and the operating energy consumption of the whole machine is reduced.
The specific implementation is as follows:
the opening pressure of the emptying valve may be set to an intermediate value, for example 40kPa, when surface suction is performed and the suction medium is a light material such as wood chips. Through the pressure sensor detection at storage tank top, when jar internal vacuum pressure reaches 40kPa, atmospheric valve 8 opens, and system pressure reduces in the twinkling of an eye, and atmospheric valve 8 closes, and when system pressure reached 40kPa once more, atmospheric valve 8 opened once more, so relapse, can make the biggest vacuum degree of system, jar internal pressure of body limits always promptly within 40 kPa. Meanwhile, through program control, according to the optimal curve of the negative pressure and the rotating speed of the fan, the maximum rotating speed of the fan is automatically set to be the optimal working rotating speed (for example 1500 rpm) corresponding to 40kPa, so that the suction capacity is met, the maximum energy consumption of the system is limited, and the energy loss is avoided.
When the large-depth suction or the suction of heavy materials such as sludge, stones and the like is carried out, the opening pressure of the emptying valve is set to be the highest negative pressure, such as 90kPa, as mentioned above, the system pressure can be always limited within 90kPa, and meanwhile, the rotating speed of the fan is automatically set to be the highest working rotating speed (for example 2100 rpm) through program control, so that the suction capacity of the system can be maximized.
The embodiment also comprises a touch display, the touch display is electrically connected with the controller, several working modes can be preset by combining means such as the touch display and the like, the working modes correspond to different opening pressures of the emptying valve and the rotating speed of the fan, an operator switches the working modes according to actual conditions, parameters such as the rotating speed of the engine do not need to be manually and frequently adjusted, and therefore the pumping capacity is achieved, and meanwhile, the energy consumption of the system is saved.
Example two:
based on the suction system for the suction vehicle described in the first embodiment, the present embodiment provides a vacuum degree control method for a suction system for a suction vehicle, which sets the opening pressure of the vent valve and the operating speed of the vacuum fan according to the operating condition of the suction system for the suction vehicle, so that the storage tank has different vacuum degrees under different operating conditions.
As shown in fig. 3, the operation conditions include a first operation condition (i.e., a first operation mode), a second operation condition (i.e., a second operation mode), and a third operation condition (i.e., a third operation mode), and the maximum working negative pressure of the storage tank in this embodiment is described by taking 90kPa as an example;
under a first operation working condition, the opening pressure of the emptying valve is 40-50% of the maximum working negative pressure of the material storage tank, and the working rotating speed of the vacuum fan is the optimal working rotating speed determined according to the negative pressure and rotating speed optimal curve of the vacuum fan; (ii) a In the embodiment, the opening pressure of the emptying valve is 40kPa, and the maximum rotating speed of the vacuum fan is 1500 rpm;
under a second operation working condition, the opening pressure of the emptying valve is 60-70% of the maximum working negative pressure of the material storage tank, and the working rotating speed of the vacuum fan is adjusted to be the optimal higher working rotating speed determined according to the negative pressure and rotating speed optimal curve of the vacuum fan; in the embodiment, the opening pressure of the emptying valve is 60kPa, and the maximum rotating speed of the vacuum fan is 1800 rpm;
under a third operation working condition, the opening pressure of the emptying valve is the maximum working negative pressure of the material storage tank, and the rotating speed of the vacuum fan is adjusted to be the maximum working rotating speed; in this example, the opening pressure of the vent valve was 90kPa, and the maximum rotation speed of the vacuum blower was 2100 rpm.
In the embodiment, under different operation conditions, the emptying valve can be manually opened and closed through an emptying valve switch on the operation box, and after the manual switch is opened, the emptying valve is always in an open state no matter how high the negative pressure is in the storage tank, and meanwhile, the rotating speed of the engine is reduced to idle speed, so that the program setting is invalid; and after the manual switch is closed, the automatic adjusting mode works according to the setting.
When the automatic adjusting mode is adopted, the controller acquires the vacuum degree in the material storage tank through the pressure sensor, and sets the opening pressure of the emptying valve according to the set working mode, so that the highest working rotating speed of each working mode is limited, and in each working mode, the rotating speed of the vacuum fan is determined according to the negative pressure and the rotating speed optimal curve of the vacuum fan.
Example three:
based on the suction system for a suction vehicle described in the first embodiment and the vacuum degree control method for a suction system for a suction vehicle described in the second embodiment, the present embodiment provides a suction vehicle equipped with the suction system for a suction vehicle described in the first embodiment, and further capable of controlling the vacuum degree of the suction system according to the vacuum degree control method for a suction system for a suction vehicle described in the second embodiment.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A suction system for a suction vehicle, comprising:
the inlet of the storage tank is communicated with the first pipeline; the outlet of the storage tank is communicated with a second pipeline;
an inlet of the vacuum fan is communicated with the second pipeline;
and the emptying valve is arranged on the second pipeline.
2. The suction system for suction vehicle as claimed in claim 1, wherein a suction valve is installed between the inlet of the storage tank and the first pipe.
3. The suction system for suction vehicle as claimed in claim 1, wherein a discharge valve is installed between the outlet of the storage tank and the second pipe.
4. The suction system for suction vehicle as claimed in claim 1, wherein a dust box is installed on the second duct between said air release valve and the inlet of the vacuum blower.
5. The suction system for a suction vehicle according to claim 4, wherein a safety valve is installed on the dust box.
6. The suction system for a suction vehicle of claim 1, further comprising a pressure sensor and a controller, the pressure sensor being installed at the top of the storage tank for detecting a vacuum level in the storage tank; the controller is respectively electrically connected with the vacuum fan, the emptying valve and the pressure sensor.
7. The suction system for a suction vehicle of claim 6, further comprising a touch display, said touch display being electrically connected to said controller.
8. A suction vehicle, characterized in that the suction vehicle is provided with the suction system for a suction vehicle according to any one of claims 1 to 7.
9. A vacuum degree control method of a suction system for a suction vehicle is characterized in that the opening pressure of an emptying valve and the working rotating speed of a vacuum fan are set according to the operating condition of the suction system for the suction vehicle, so that a material storage tank has different vacuum degrees under different operating conditions.
10. The vacuum control method of a pumping system for a vehicle according to claim 9, wherein the operation conditions include a first operation condition, a second operation condition, and a third operation condition;
under the first operation working condition, the opening pressure of the emptying valve is 40% -50% of the maximum working negative pressure of the material storage tank, and the working rotating speed of the vacuum fan is the optimal working rotating speed determined according to the negative pressure and rotating speed optimal curve of the vacuum fan;
under the second operation working condition, the opening pressure of the emptying valve is 60-70% of the maximum working negative pressure of the material storage tank, and the working rotating speed of the vacuum fan is adjusted to be the optimal working rotating speed determined according to the negative pressure and rotating speed optimal curve of the vacuum fan;
and under the third operation working condition, the opening pressure of the emptying valve is the maximum working negative pressure of the material storage tank, and the rotating speed of the vacuum fan is adjusted to be the maximum working rotating speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111163436.9A CN113818387A (en) | 2021-09-30 | 2021-09-30 | Suction vehicle, suction system for suction vehicle and vacuum degree control method of suction system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111163436.9A CN113818387A (en) | 2021-09-30 | 2021-09-30 | Suction vehicle, suction system for suction vehicle and vacuum degree control method of suction system |
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| CN113818387A true CN113818387A (en) | 2021-12-21 |
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| CN202111163436.9A Pending CN113818387A (en) | 2021-09-30 | 2021-09-30 | Suction vehicle, suction system for suction vehicle and vacuum degree control method of suction system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776609A (en) * | 2022-03-15 | 2022-07-22 | 江苏徐工工程机械研究院有限公司 | Automatic air supplementing system of suction vehicle and control method |
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| CN113006258A (en) * | 2019-12-20 | 2021-06-22 | 南京晨光森田环保科技有限公司 | Automatic control device of sewage suction truck |
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| US20090100724A1 (en) * | 2007-10-18 | 2009-04-23 | Oceaneering International, Inc. | Underwater Sediment Evacuation System |
| CN203507960U (en) * | 2013-11-09 | 2014-04-02 | 七台河宝泰隆圣迈煤化工有限责任公司 | Automatic control device for nitrogen pressure regulation of refining and cracking buffer tanks |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776609A (en) * | 2022-03-15 | 2022-07-22 | 江苏徐工工程机械研究院有限公司 | Automatic air supplementing system of suction vehicle and control method |
| CN114776609B (en) * | 2022-03-15 | 2023-07-04 | 江苏徐工工程机械研究院有限公司 | Automatic air supplementing system of suction vehicle and control method |
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