CN117468558B - Vacuum collection and transfer system and method for oily sewage in campus catering - Google Patents
Vacuum collection and transfer system and method for oily sewage in campus catering Download PDFInfo
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- 239000010865 sewage Substances 0.000 title claims abstract description 175
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012546 transfer Methods 0.000 title claims description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000007788 liquid Substances 0.000 claims abstract description 93
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 239000003344 environmental pollutant Substances 0.000 claims description 11
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- 238000012544 monitoring process Methods 0.000 claims description 3
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- 231100000331 toxic Toxicity 0.000 abstract description 7
- 230000002588 toxic effect Effects 0.000 abstract description 7
- 230000002452 interceptive effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 2
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- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention discloses a vacuum collection and transmission system and method for oily sewage in campus catering, and relates to the field of sewage treatment. The closed type centralized collection and transmission of the restaurant oily sewage in the school is realized through the interactive work of the pipeline type variable frequency sewage grid crusher, the variable frequency sewage pump, the variable frequency vacuum pump and the horizontal double-layer vacuum transmission tank, so that the pollution problem of the surrounding air environment of the restaurant facility is solved; the working of the variable frequency sewage pump is controlled through the linkage of the computer host, the electric valve bank, the vacuum pressure gauge set and the signals of the remote radar liquid level gauge, so that the oily sewage of the campus catering is efficiently collected and transferred, and the problem of blockage of the oily sewage pipeline is solved; further, the computer host is linked with signals of the electric valve group, the vacuum pressure gauge group and the remote radar liquid level gauge to control the variable frequency vacuum pump and the variable frequency clean water pump to work, so that the problem that toxic and harmful gas is diffused into a room due to the fact that the water seal of sanitary equipment is damaged by vacuum is solved, and the air environment of a campus is effectively improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a vacuum collection and transfer system and method for oily sewage in campus catering.
Background
The green campus is a campus environment which adopts a series of measures to promote sustainable development and green environmental protection, and the influence on the environment is reduced by adopting novel intelligent equipment. At present, the conventional collection mode of the oily sewage of the campus catering is as follows: the restaurant oily sewage is firstly discharged to the outdoor oil separation tank in a concentrated way through the pipelines and then discharged into the campus sewage pipe. The conventional campus catering oily sewage collection mode has the following results: the odor around the oil separation tank and the buried sewage pipe are frequently blocked, so that the air environment around campus catering facilities is deteriorated. In addition, in the conventional vacuum drainage technology, because the variable-frequency vacuum pump is started and stopped in disorder, the water seal of indoor sanitary ware of the catering facility is damaged, so that toxic and harmful gas is diffused into an indoor area, and the indoor air environment is further deteriorated.
Disclosure of Invention
Aiming at the problems in the background technology, the invention provides a vacuum collection and transfer system and a method for oily sewage in campus catering, which can solve the pollution problem of surrounding and indoor air environments of campus catering facilities, avoid blockage of oily sewage pipes in catering and effectively improve the air environment of the campus.
In order to achieve the above object, the present invention provides the following solutions:
In one aspect, the invention provides a vacuum collection and transfer system for oily sewage of campus catering, comprising: the system comprises a computer host, a pipeline type variable frequency sewage grid crusher, a horizontal double-layer vacuum transmission tank, a variable frequency vacuum pump, a variable frequency sewage pump, a variable frequency clean water pump, a remote transmission electromagnetic flowmeter, a vacuum pressure gauge group, a remote transmission radar liquid level gauge and an electric valve group which are respectively connected with the computer host; the vacuum pressure gauge set comprises a first vacuum pressure gauge and a second vacuum pressure gauge; the electric valve group comprises a first electric valve, a second electric valve, a third electric valve and a fourth electric valve;
The pipeline type variable-frequency sewage grid crusher is arranged on an oily sewage drain pipe; the horizontal double-layer vacuum transfer tank is respectively connected with the pipeline type variable frequency sewage grid crusher, the variable frequency vacuum pump and the variable frequency sewage pump through pipelines; one end of the variable-frequency clean water pump is connected with clean water through a pipeline, and the other end of the variable-frequency clean water pump is connected to an oily sewage drain pipe through a pipeline;
The remote electromagnetic flowmeter is arranged on a household water main pipe of the catering facility and is used for measuring the water supply flow in the pipe and remotely transmitting the water supply flow to the computer host; the first vacuum pressure gauge is arranged on the oily sewage drain pipe and is used for collecting the pressure value in the pipe and remotely transmitting the pressure value to the host computer; the second vacuum pressure gauge is arranged at the top of the horizontal double-layer vacuum transfer tank and is used for collecting the vacuum value in the tank and remotely transmitting the vacuum value to the host computer; the remote radar liquid level meter is arranged at the top of the horizontal double-layer vacuum transmission tank and is used for collecting the liquid level value in the tank and remotely transmitting the liquid level value to the computer host;
The first electric valve is arranged on an oily sewage drain pipe in front of the pipeline type variable-frequency sewage grid crusher; the second electric valve is arranged on a pipeline in front of the variable frequency vacuum pump; the third electric valve is arranged on a pipeline behind the variable-frequency clean water pump; the fourth electric valve is arranged on a pipeline behind the variable-frequency sewage pump; the electric valve group is used for remotely transmitting the opening and closing state signals of the valve to the computer host and receiving the opening and closing valve action commands from the computer host.
Optionally, pipeline formula frequency conversion sewage grid breaker, horizontal double-deck vacuum transfer tank, frequency conversion vacuum pump, frequency conversion sewage pump and frequency conversion clear water pump are skid-mounted equipment, and five skid-mounted equipment integrate in the container, place in campus dining facility periphery.
Optionally, the host computer is arranged in a campus monitoring room.
On the other hand, the invention also provides a vacuum collection and transfer method for the oily sewage of the campus catering, which is applied to a vacuum collection and transfer system for the oily sewage of the campus catering; the vacuum collection and transfer method for the oily sewage of the campus catering comprises the following steps:
The computer host determines whether the oily sewage drain pipe is in a small flow state or a large flow state according to the water supply flow transmitted by the remote electromagnetic flowmeter;
Under the state of small flow, the computer host controls the first electric valve to maintain the opening state, and sends out a low-frequency working signal of the pipeline type variable-frequency sewage grid crusher, and the catering oily sewage containing crushed pollutants automatically flows into the horizontal double-layer vacuum transfer tank;
Under the high-flow state, the computer host controls the first electric valve to maintain the opening state and send out a high-frequency working signal of the pipeline type variable-frequency sewage grid crusher, and simultaneously controls the second electric valve to open and send out a pump starting signal of the variable-frequency vacuum pump, and the catering oily sewage containing crushed pollutants is sucked into the horizontal double-layer vacuum transfer tank by vacuum;
the computer host determines whether the horizontal double-layer vacuum transfer tank is in a high-liquid-level state or a low-liquid-level state according to the liquid level value transmitted by the remote radar liquid level meter;
If the pressure of the restaurant oily sewage in the horizontal double-layer vacuum transfer tank is in a high liquid level state, the computer host sends a pump stopping signal of the variable frequency vacuum pump and controls to close the first electric valve and the second electric valve, and simultaneously controls to open the fourth electric valve and send a pump starting signal of the variable frequency sewage pump, so that the restaurant oily sewage in the horizontal double-layer vacuum transfer tank is pressurized and discharged to the campus sewage treatment device;
When the computer host determines that the horizontal double-layer vacuum transfer tank is in a low liquid level state, sending a pump stopping signal of the variable-frequency sewage pump and controlling to close the fourth electric valve;
After receiving the pump stopping signal of the variable-frequency sewage pump, the computer host sends out a pump starting signal of the variable-frequency clean water pump and controls the third electric valve to be opened; and after receiving the positive pressure value signal transmitted by the first vacuum pressure gauge, sending a pump stopping signal of the variable-frequency clean water pump and controlling to close the third electric valve.
Optionally, the computer host determines whether the oily sewage drain pipe is in a small flow state or a large flow state according to the water supply flow acquired by the remote electromagnetic flowmeter, and specifically comprises the following steps:
and calculating the total rated flow according to the quantity of the water appliances at the tail end in the catering facility and the rated flow of the water appliances, determining that the water supply flow is smaller than 30% of the total rated flow as a small flow state, and determining that the water supply flow is larger than or equal to 30% of the total rated flow as a large flow state.
Optionally, the computer host determines whether the horizontal double-layer vacuum transfer tank is in a high-liquid-level state or a low-liquid-level state according to the liquid level value transmitted by the remote radar liquid level meter, and specifically comprises the following steps:
When the liquid level value is greater than 90% of the tank capacity liquid level, determining that the horizontal double-layer vacuum transfer tank is in a high liquid level state; when the liquid level value is smaller than 1% of the tank capacity liquid level, the horizontal double-layer vacuum transfer tank is determined to be in a low liquid level state.
Optionally, the host computer is further configured to receive an operating status signal of the connected device; the working state signals comprise a normal working signal, a fault signal and a variable frequency motor current signal.
Optionally, when the host computer receives a fault signal of the connected device, an alarm signal is sent to a manager.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
According to the vacuum collection and transmission system and method for the oily sewage of the campus catering, provided by the invention, the oily sewage of the campus catering is collected and transmitted in a closed mode through the interactive work of the pipeline type variable-frequency sewage grid crusher, the variable-frequency sewage pump, the variable-frequency vacuum pump and the horizontal double-layer vacuum transmission tank, so that the pollution problem of the air environment of the campus, particularly the surrounding air environment of catering facilities, is solved; the working of the variable-frequency sewage pump is controlled through the linkage of the computer host of the green campus Internet of things control center with signals of the electric valve group, the vacuum pressure gauge group and the remote radar liquid level gauge, so that the campus catering oily sewage is efficiently collected and transferred, and the problem of blockage of an oily sewage pipeline is solved; the working of the variable-frequency vacuum pump and the variable-frequency clear water pump is further controlled through linkage of a computer host of the green campus Internet of things control center with signals of the electric valve group, the vacuum pressure gauge group and the remote radar liquid level gauge, and the problem that toxic and harmful gas is diffused into a room due to vacuum damage of a water seal of sanitary equipment is solved. Therefore, the invention can effectively avoid the blockage of the restaurant oily sewage pipe and effectively improve the campus air environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a vacuum collection and transfer system for oily sewage of a campus catering.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a vacuum collection and transfer system and method for oily sewage of campus catering, which can solve the pollution problem of surrounding and indoor air environments of the campus catering facilities, avoid blockage of oily sewage pipes of the catering, and effectively improve the air environment of the campus.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the vacuum collection and transfer system for oily sewage of campus catering of the invention comprises: the device comprises a computer host 1, a pipeline type variable frequency sewage grid crusher 2, a horizontal double-layer vacuum transmission tank 3, a variable frequency vacuum pump 4, a variable frequency sewage pump 5, a variable frequency clean water pump 6, a remote transmission electromagnetic flowmeter 7, a vacuum pressure gauge set, a remote transmission radar liquid level gauge 8 and an electric valve set, wherein the pipeline type variable frequency sewage grid crusher 2, the horizontal double-layer vacuum transmission tank 3, the variable frequency vacuum pump 4, the variable frequency sewage pump 5, the variable frequency clean water pump 6, the remote transmission electromagnetic flowmeter 7, the vacuum pressure gauge set, the remote transmission radar liquid level gauge 8 and the electric valve set are respectively connected with the computer host 1. The vacuum pressure gauge group specifically comprises a first vacuum pressure gauge 9 and a second vacuum pressure gauge 10. The electric valve group specifically comprises a first electric valve 11, a second electric valve 12, a third electric valve 13 and a fourth electric valve 14.
The computer host 1 of the green campus Internet of things control center is arranged in a campus monitoring room and is attended by a special person. The pipeline type variable frequency sewage grid crusher 2 is arranged on an oily sewage drain pipe. The horizontal double-layer vacuum transfer tank 3 is respectively connected with the pipeline type variable frequency sewage grid crusher 2, the variable frequency vacuum pump 4 and the variable frequency sewage pump 5 through pipelines. One end of the variable-frequency clean water pump 6 is connected with clean water through a pipeline, and the other end of the variable-frequency clean water pump is connected to an oily sewage drain pipe through a pipeline.
The invention discloses an equipment set in a vacuum collection and transfer system of oily sewage in campus dining, which comprises a pipeline type variable-frequency sewage grid crusher 2, a horizontal double-layer vacuum transfer tank 3, a variable-frequency vacuum pump 4, a variable-frequency sewage pump 5 and a variable-frequency clean water pump 6 which are all skid-mounted equipment, wherein the five skid-mounted equipment are integrated in a module similar to a container and are placed near the campus dining facilities. The working status signals (including the normal working signal, the fault signal and the variable frequency motor current signal) of each device in the device group are remotely sent to the computer host 1, and meanwhile, the working instructions from the computer host 1 are received.
The remote transmission electromagnetic flowmeter 7 is arranged on a household water main pipe of a catering facility, collects water supply flow and remotely transmits a measured water supply flow signal to the computer host 1.
The remote radar liquid level meter 8 is arranged at the top of the horizontal double-layer vacuum transfer tank 3, and collects the liquid level value in the tank and remotely transmits the liquid level value to the host computer 1.
The first vacuum pressure gauge 9 is arranged on a restaurant oily sewage drain pipe, collects the pressure value of sewage in the pipeline, and remotely transmits a pressure value signal to the computer host 1.
The second vacuum pressure gauge 10 is arranged at the top of the horizontal double-layer vacuum transfer tank 3, collects the vacuum value in the tank and remotely transmits a vacuum value signal to the computer host 1.
The first electric valve 11 is arranged on an oily sewage drain pipe in front of the pipeline type variable frequency sewage grid crusher 2, and a valve opening and closing state signal of the first electric valve is remotely transmitted to the computer host 1 and simultaneously receives an opening and closing valve action command from the computer host 1.
The second electric valve 12 is installed on the pipeline in front of the variable frequency vacuum pump 4, and the valve opening and closing state signal thereof is remotely transmitted to the computer host 1, and simultaneously receives the valve opening and closing action command from the computer host 1.
The third electric valve 13 is installed on the pipeline behind the variable frequency clean water pump 6, and the valve opening and closing state signal thereof is remotely transmitted to the computer host 1, and simultaneously receives the valve opening and closing action command from the computer host 1.
The fourth electric valve 14 is installed on the pipeline behind the variable frequency sewage pump 5, and the valve opening and closing state signal thereof is remotely transmitted to the computer host 1, and simultaneously receives the valve opening and closing action command from the computer host 1.
When the vacuum collection and transmission system for the oily sewage of the campus catering works, the remote electromagnetic flowmeter 7 remotely transmits the monitored water supply flow signal to the computer host 1. The computer host 1 determines whether the current oily sewage drain pipe is in a small flow state or a large flow state according to a preset large flow state and a preset small flow state, specifically calculates the total rated flow of all water consuming devices according to the number of the water consuming devices at the tail end in the catering facility and the rated flow thereof, and then takes 30% of the total rated flow as a metering point, wherein less than 30% of the total rated flow is in the small flow state and more than or equal to 30% of the total rated flow is in the large flow state.
When the computer host 1 judges a small flow state, a low-frequency working command of the pipeline type variable-frequency sewage grating crusher 2 is sent, and the oily sewage automatically flows into the horizontal double-layer vacuum transfer tank 3 after passing through the pipeline type variable-frequency sewage grating crusher 2. When the computer host 1 judges that the large-flow state is achieved, a high-frequency working command of the pipeline type variable-frequency sewage grid crusher 2, a valve opening command of the second electric valve 12 and a pump opening command of the variable-frequency vacuum pump 4 are sent out, and at the moment, oily sewage is sucked into the horizontal double-layer vacuum transfer tank 3 by vacuum after passing through the pipeline type variable-frequency sewage grid crusher 2.
The remote radar liquid level gauge 8 continuously monitors the high and low liquid level value in the horizontal double-layer vacuum transfer tank 3, sets the liquid level (tank capacity liquid level) higher than 90% of the tank capacity as a high liquid level, namely the pump starting liquid level of the variable frequency vacuum pump 4, and sets the liquid level lower than 1% of the tank capacity as a low liquid level, namely the pump stopping liquid level of the variable frequency vacuum pump 4. When the host computer 1 receives the high liquid level signal, a valve closing command of the first electric valve 11, a valve closing command of the second electric valve 12, a shutdown command of the pipeline type variable frequency sewage grid crusher 2 and a pump stopping command of the variable frequency vacuum pump 4 are sent out, and a valve opening command of the fourth electric valve 14 and a pump opening command of the variable frequency sewage pump 5 are sent out at the same time. And then when the host computer 1 receives the low liquid level signal, a pump stopping command of the variable frequency sewage pump 5 and a valve closing command of the fourth electric valve 14 are sent, and a valve opening command of the third electric valve 13 and a pump opening command of the variable frequency clean water pump 6 are sent at the same time. When the computer host 1 receives the positive pressure signal of the first vacuum pressure gauge 9, the computer host 1 sends out a pump stopping command of the variable frequency clean water pump 6 and a valve closing command of the third electric valve 13.
The water drainage process of the oil-containing sewage of the campus completely depends on the transmission and feedback of digital analog signals of pressure, flow and liquid level, and the starting and stopping of connected equipment and the starting and stopping of the electric valve group are automatically controlled by the host computer 1, so that manual participation is not needed, and the sewage treatment efficiency and the automation degree are improved.
Based on the vacuum collection and transfer system of the campus catering oily sewage, the invention also provides a vacuum collection and transfer method of the campus catering oily sewage, which comprises the following steps:
s1: the host computer 1 determines whether the oily sewage drain pipe is in a small flow state or a large flow state according to the water supply flow transmitted by the remote electromagnetic flowmeter 7.
The remote transmission electromagnetic flowmeter 7 is arranged on a domestic water main pipe of a catering facility and is used for measuring water supply flow in the pipe and remotely transmitting the water supply flow to the computer host 1. The host computer 1 determines whether the oily sewage drain pipe is in a small flow state or a large flow state according to the water supply flow collected by the remote electromagnetic flowmeter 7, and specifically comprises the following steps: and calculating the total rated flow according to the quantity of the water appliances at the tail end in the catering facility and the rated flow of each water appliance, determining a small flow state when the water supply flow is smaller than 30% of the total rated flow, and determining a large flow state when the water supply flow is larger than or equal to 30% of the total rated flow.
S2: in a small flow state, the computer host 1 controls the first electric valve 11 to maintain an open state and sends out a low-frequency working signal of the pipeline type variable-frequency sewage grid crusher 2; in a low-frequency working state, the variable frequency motor of the pipeline type variable frequency sewage grid crusher 2 works at a low speed, the rotor rotates at a low speed, large-particle large-diameter pollutants are crushed into small-particle small-diameter pollutants, and catering oily sewage containing the crushed pollutants automatically flows into the horizontal double-layer vacuum transfer tank 3.
S3: in a large flow state, the computer host 1 controls the first electric valve 11 to maintain an open state and sends out a high-frequency working signal of the pipeline type variable-frequency sewage grid crusher 2; under the high-frequency working condition, the variable frequency motor of the pipeline type variable frequency sewage grid crusher 2 works at a high speed, the rotor rotates at a high speed, the pollutants with large particles and large diameters are crushed into small particles and small diameters, the pollutants with small particles and small sizes are also fully crushed, and the pollutants with large sizes are crushed more thoroughly. At the same time, the computer host 1 controls the second electric valve 12 to open and sends out a pump starting signal of the variable frequency vacuum pump 4, and the catering oily sewage containing the crushed pollutants is instantly sucked into the horizontal double-layer vacuum transfer tank 3 in a vacuum way, so that the whole drainage system is ensured not to overflow.
S4: the computer host 1 determines whether the horizontal double-layer vacuum transfer tank 3 is in a high liquid level state or a low liquid level state according to the liquid level value transmitted by the remote radar liquid level meter 8.
The remote radar liquid level meter 8 is arranged at the top of the horizontal double-layer vacuum transfer tank 3 and is used for collecting the liquid level value in the tank and remotely transmitting the liquid level value to the computer host 1. Specifically, a flange plate is perforated and reserved at the top of the horizontal double-layer vacuum transmission tank 3, a body flange of the remote radar liquid level meter 8 is connected with the reserved flange of the horizontal double-layer vacuum transmission tank 3 through bolts, the remote radar liquid level meter 8 body is arranged outside the horizontal double-layer vacuum transmission tank 3, and a radar probe of the remote radar liquid level meter 8 is arranged at the top in the horizontal double-layer vacuum transmission tank 3 through the perforation.
When the real-time liquid level value monitored by the remote radar liquid level meter 8 is greater than 90% of the tank capacity liquid level, the computer host 1 determines that the horizontal double-layer vacuum transfer tank 3 is in a high liquid level state; when the liquid level value is smaller than 1% of the tank capacity liquid level, the horizontal double-layer vacuum transfer tank 3 is determined to be in a low liquid level state.
S5: if the liquid level is in a high liquid level state, the computer host 1 sends out a pump stopping signal of the variable frequency vacuum pump 4, controls the first electric valve 11 and the second electric valve 12 to be closed, simultaneously controls the fourth electric valve 14 to be opened, and sends out a pump starting signal of the variable frequency sewage pump 5, so that the catering oily sewage in the horizontal double-layer vacuum transfer tank 3 is pressurized and discharged to the campus sewage treatment device.
S6: when the computer host 1 determines that the horizontal double-layer vacuum transfer tank 3 is in a low liquid level state, a pump stopping signal of the variable frequency sewage pump 5 is sent out and the fourth electric valve 14 is controlled to be closed.
S7: after receiving the pump stopping signal of the variable frequency sewage pump 5, the computer host 1 sends out a pump starting signal of the variable frequency clean water pump 6 and controls the third electric valve 13 to be opened; after receiving the positive pressure value signal transmitted by the first vacuum pressure gauge 9, a pump stopping signal of the variable-frequency clean water pump 6 is sent out and the third electric valve 13 is controlled to be closed.
The first vacuum pressure gauge 9 is arranged on an oily sewage drain pipe of the campus catering, and monitors a pressure value signal of water pressure in the pipe. The variable-frequency clean water pump 6 and the variable-frequency sewage pump 5 are arranged at adjacent positions and are close to the horizontal double-layer vacuum transfer tank 3. The variable-frequency clean water pump 6 is started to fill water into the campus catering oily sewage drain pipe, so that the water state is guaranteed to be filled in the pipe, a diffusion channel for toxic and harmful gas is blocked, and the indoor air quality is protected. Because if it is not filled with water, the toxic and harmful gases accumulated in the drainage system may diffuse into the room along the drainage pipe, contaminating the indoor air.
Further, the computer host 1 is further configured to receive an operating status signal of a connected device (such as the pipeline type variable frequency sewage grid crusher 2, the horizontal double-layer vacuum transfer tank 3, the variable frequency vacuum pump 4, the variable frequency sewage pump 5 and the variable frequency clean water pump 6), and instruct maintenance of the device and the valve table. The working state signals comprise a normal working signal, a fault signal and a variable frequency motor current signal. When the equipment or the valve table fails and cannot work normally, a failure signal is fed back to the host computer 1. For example, when a certain electric valve fails and cannot be opened and closed normally, an electric valve failure signal is fed back to the host computer 1. The computer host 1 sends an alarm signal to the manager after receiving the fault signal.
According to the vacuum collection and transmission method for the oily sewage of the campus catering, the signals are received and fed back in real time based on the environment-friendly campus internet of things platform and the pump valve table, so that automatic linkage control is performed, peculiar smell around the campus catering facilities can be effectively removed, blockage of the oily sewage pipe of the campus catering is effectively reduced, and the air environment of the campus is effectively improved.
In addition, when the variable frequency vacuum pump 4 works, sewage in the campus catering oily sewage drain pipe (including a water seal of an indoor drainage device) can be completely sucked into the horizontal double-layer vacuum transfer tank 3. If the oil-containing sewage drain pipe cannot be filled with water or the water seal of the drainage device is not recovered, toxic and harmful gas accumulated in the drainage system can diffuse into the room along the drainage pipeline to pollute the indoor air. According to the invention, through the signal linkage control of the campus Internet of things computer host 1, the electric valve group, the vacuum pressure gauge group and the variable-frequency clean water pump 6, after the variable-frequency clean water pump 6 is started, water is filled into the oily sewage drain pipe, so that the water state is fully filled in the pipe, the water seal of the indoor drainage device is restored, the diffusion channel of toxic and harmful gas is blocked, the indoor air quality is protected, and the problem of indoor air pollution caused by water seal damage is effectively solved.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. Vacuum collection and transfer system for oily sewage of campus catering, which is characterized by comprising: the system comprises a computer host, a pipeline type variable frequency sewage grid crusher, a horizontal double-layer vacuum transmission tank, a variable frequency vacuum pump, a variable frequency sewage pump, a variable frequency clean water pump, a remote transmission electromagnetic flowmeter, a vacuum pressure gauge group, a remote transmission radar liquid level gauge and an electric valve group which are respectively connected with the computer host; the vacuum pressure gauge set comprises a first vacuum pressure gauge and a second vacuum pressure gauge; the electric valve group comprises a first electric valve, a second electric valve, a third electric valve and a fourth electric valve;
The pipeline type variable-frequency sewage grid crusher is arranged on an oily sewage drain pipe; the horizontal double-layer vacuum transfer tank is respectively connected with the pipeline type variable frequency sewage grid crusher, the variable frequency vacuum pump and the variable frequency sewage pump through pipelines; one end of the variable-frequency clean water pump is connected with clean water through a pipeline, and the other end of the variable-frequency clean water pump is connected to an oily sewage drain pipe through a pipeline;
the remote electromagnetic flowmeter is arranged on a household water main pipe of the catering facility and is used for measuring the water supply flow in the pipe and remotely transmitting the water supply flow to the computer host; the first vacuum pressure gauge is arranged on the oily sewage drain pipe and is used for collecting the pressure value in the pipe and remotely transmitting the pressure value to the host computer; the second vacuum pressure gauge is arranged at the top of the horizontal double-layer vacuum transfer tank and is used for collecting the vacuum value in the tank and remotely transmitting the vacuum value to the host computer; the remote radar liquid level meter is arranged at the top of the horizontal double-layer vacuum transmission tank and is used for collecting the liquid level value in the tank and remotely transmitting the liquid level value to the computer host; specifically, a hole is formed in the top of a horizontal double-layer vacuum transmission tank, a flange plate is reserved, a body flange of a remote-transmission radar liquid level meter is connected with a reserved flange of the horizontal double-layer vacuum transmission tank through bolts, the remote-transmission radar liquid level meter body is arranged outside the horizontal double-layer vacuum transmission tank, and a radar probe of the remote-transmission radar liquid level meter is arranged at the top in the horizontal double-layer vacuum transmission tank through the hole;
The first electric valve is arranged on an oily sewage drain pipe in front of the pipeline type variable-frequency sewage grid crusher; the second electric valve is arranged on a pipeline in front of the variable frequency vacuum pump; the third electric valve is arranged on a pipeline behind the variable-frequency clean water pump; the fourth electric valve is arranged on a pipeline behind the variable-frequency sewage pump; the electric valve group is used for remotely transmitting the opening and closing state signals of the valve to the computer host and receiving the opening and closing valve action command from the computer host;
When the vacuum collection and transmission system for the oily sewage of the campus catering works, the remote electromagnetic flowmeter remotely transmits the monitored water supply flow signal to the host computer; the computer host determines whether the current oily sewage drain pipe is in a small flow state or a large flow state according to a preset large flow state and a preset small flow state, specifically calculates the total rated flow of all water consuming devices according to the number of the water consuming devices at the tail end in the catering facility and the rated flow thereof, and then takes 30% of the total rated flow as a metering point, wherein the total rated flow is smaller than 30% and larger than or equal to 30% and the total rated flow is in a large flow state;
When the host computer judges that the state of small flow is achieved, a low-frequency working command of the pipeline type variable-frequency sewage grating crusher is sent out, and oily sewage automatically flows into the horizontal double-layer vacuum transfer tank after passing through the pipeline type variable-frequency sewage grating crusher; when the host computer judges that the state of large flow is achieved, a high-frequency working command of the pipeline type variable-frequency sewage grating crusher, a valve opening command of the second electric valve and a pump opening command of the variable-frequency vacuum pump are sent out, and at the moment, the oily sewage is sucked into the horizontal double-layer vacuum transfer tank in a vacuum way after passing through the pipeline type variable-frequency sewage grating crusher;
The remote radar liquid level meter continuously monitors the high and low liquid level values in the horizontal double-layer vacuum transfer tank, sets the tank volume liquid level higher than 90% as high liquid level, and sets the tank volume liquid level lower than 1% as low liquid level; when the host computer receives a high liquid level signal, a valve closing command of a first electric valve, a valve closing command of a second electric valve, a shutdown command of the pipeline type variable frequency sewage grid crusher and a pump stopping command of the variable frequency vacuum pump are sent out, and a valve opening command of a fourth electric valve and a pump opening command of the variable frequency sewage pump are sent out at the same time; then when the host computer receives the low liquid level signal, a pump stopping command of the variable frequency sewage pump and a valve closing command of the fourth electric valve are sent out, and a valve opening command of the third electric valve and a pump opening command of the variable frequency clean water pump are sent out at the same time; the variable-frequency clean water pump and the variable-frequency sewage pump are arranged at adjacent positions and are close to the horizontal double-layer vacuum transfer tank; the water is filled into the campus catering oily sewage drainage pipe by starting the variable-frequency clean water pump, so that the water filled state in the pipe is ensured; when the computer host receives the positive pressure signal of the first vacuum pressure gauge, the computer host sends out a pump stopping command of the variable-frequency clean water pump and a valve closing command of the third electric valve.
2. The system for vacuum collection and transfer of oily sewage in a campus of claim 1, wherein the pipeline type variable frequency sewage grid crusher, the horizontal double-layer vacuum transfer tank, the variable frequency vacuum pump, the variable frequency sewage pump and the variable frequency clean water pump are all skid-mounted devices, and the five skid-mounted devices are integrated in a container and are placed on the periphery of the campus dining facility.
3. The system for vacuum collection and transfer of oily sewage from a campus as claimed in claim 1, wherein said host computer is disposed in a campus monitoring room.
4. The vacuum collection and transfer method for the oily sewage of the campus catering is characterized by being applied to a vacuum collection and transfer system for the oily sewage of the campus catering; the vacuum collection and transfer system for the oily sewage of the campus catering comprises: the system comprises a computer host, a pipeline type variable frequency sewage grid crusher, a horizontal double-layer vacuum transmission tank, a variable frequency vacuum pump, a variable frequency sewage pump, a variable frequency clean water pump, a remote transmission electromagnetic flowmeter, a vacuum pressure gauge group, a remote transmission radar liquid level gauge and an electric valve group which are respectively connected with the computer host; the vacuum pressure gauge set comprises a first vacuum pressure gauge and a second vacuum pressure gauge; the electric valve group comprises a first electric valve, a second electric valve, a third electric valve and a fourth electric valve;
The pipeline type variable-frequency sewage grid crusher is arranged on an oily sewage drain pipe; the horizontal double-layer vacuum transfer tank is respectively connected with the pipeline type variable frequency sewage grid crusher, the variable frequency vacuum pump and the variable frequency sewage pump through pipelines; one end of the variable-frequency clean water pump is connected with clean water through a pipeline, and the other end of the variable-frequency clean water pump is connected to an oily sewage drain pipe through a pipeline;
the remote electromagnetic flowmeter is arranged on a household water main pipe of the catering facility and is used for measuring the water supply flow in the pipe and remotely transmitting the water supply flow to the computer host; the first vacuum pressure gauge is arranged on the oily sewage drain pipe and is used for collecting the pressure value in the pipe and remotely transmitting the pressure value to the host computer; the second vacuum pressure gauge is arranged at the top of the horizontal double-layer vacuum transfer tank and is used for collecting the vacuum value in the tank and remotely transmitting the vacuum value to the host computer; the remote radar liquid level meter is arranged at the top of the horizontal double-layer vacuum transmission tank and is used for collecting the liquid level value in the tank and remotely transmitting the liquid level value to the computer host; specifically, a hole is formed in the top of a horizontal double-layer vacuum transmission tank, a flange plate is reserved, a body flange of a remote-transmission radar liquid level meter is connected with a reserved flange of the horizontal double-layer vacuum transmission tank through bolts, the remote-transmission radar liquid level meter body is arranged outside the horizontal double-layer vacuum transmission tank, and a radar probe of the remote-transmission radar liquid level meter is arranged at the top in the horizontal double-layer vacuum transmission tank through the hole;
The first electric valve is arranged on an oily sewage drain pipe in front of the pipeline type variable-frequency sewage grid crusher; the second electric valve is arranged on a pipeline in front of the variable frequency vacuum pump; the third electric valve is arranged on a pipeline behind the variable-frequency clean water pump; the fourth electric valve is arranged on a pipeline behind the variable-frequency sewage pump; the electric valve group is used for remotely transmitting the opening and closing state signals of the valve to the computer host and receiving the opening and closing valve action command from the computer host;
The vacuum collection and transfer method for the oily sewage of the campus catering comprises the following steps:
The computer host determines whether the oily sewage drain pipe is in a small flow state or a large flow state according to the water supply flow transmitted by the remote electromagnetic flowmeter, specifically calculates the total rated flow of all water-using appliances according to the quantity of the water-using appliances at the tail end in the catering facility and the rated flow thereof, then takes 30% of the total rated flow as a metering point, and is in a small flow state with less than 30% of the total rated flow and is in a large flow state with more than or equal to 30% of the total rated flow;
Under the state of small flow, the computer host controls the first electric valve to maintain the opening state, and sends out a low-frequency working signal of the pipeline type variable-frequency sewage grid crusher, and the catering oily sewage containing crushed pollutants automatically flows into the horizontal double-layer vacuum transfer tank;
Under the high-flow state, the computer host controls the first electric valve to maintain the opening state and send out a high-frequency working signal of the pipeline type variable-frequency sewage grid crusher, and simultaneously controls the second electric valve to open and send out a pump starting signal of the variable-frequency vacuum pump, and the catering oily sewage containing crushed pollutants is sucked into the horizontal double-layer vacuum transfer tank by vacuum;
the computer host determines whether the horizontal double-layer vacuum transfer tank is in a high-liquid-level state or a low-liquid-level state according to the liquid level value transmitted by the remote radar liquid level meter; setting the tank volume liquid level higher than 90% as a high liquid level, and setting the tank volume liquid level lower than 1% as a low liquid level;
If the pressure of the restaurant oily sewage in the horizontal double-layer vacuum transfer tank is in a high liquid level state, the computer host sends a pump stopping signal of the variable frequency vacuum pump and controls to close the first electric valve and the second electric valve, and simultaneously controls to open the fourth electric valve and send a pump starting signal of the variable frequency sewage pump, so that the restaurant oily sewage in the horizontal double-layer vacuum transfer tank is pressurized and discharged to the campus sewage treatment device;
When the computer host determines that the horizontal double-layer vacuum transfer tank is in a low liquid level state, sending a pump stopping signal of the variable-frequency sewage pump and controlling to close the fourth electric valve;
After receiving the pump stopping signal of the variable-frequency sewage pump, the computer host sends out a pump starting signal of the variable-frequency clean water pump and controls the third electric valve to be opened; the variable-frequency clean water pump and the variable-frequency sewage pump are arranged at adjacent positions and are close to the horizontal double-layer vacuum transfer tank; the water is filled into the campus catering oily sewage drainage pipe by starting the variable-frequency clean water pump, so that the water filled state in the pipe is ensured; and after receiving the positive pressure value signal transmitted by the first vacuum pressure gauge, sending a pump stopping signal of the variable-frequency clean water pump and controlling to close the third electric valve.
5. The method for vacuum collection and transmission of oily sewage in a campus as claimed in claim 4, wherein the host computer is further used for receiving a working state signal of the connected equipment; the working state signals comprise a normal working signal, a fault signal and a variable frequency motor current signal.
6. The method for vacuum collection and transmission of oily sewage in a campus as claimed in claim 5, wherein when the host computer receives a fault signal of the connected equipment, an alarm signal is sent to a manager.
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| CN105464192A (en) * | 2016-01-08 | 2016-04-06 | 天津绿色滨海建设工程有限公司 | Vacuum sewage discharge system for railway |
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