CN215994985U - Automatic control system of water-ring type negative pressure suction equipment - Google Patents
Automatic control system of water-ring type negative pressure suction equipment Download PDFInfo
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- CN215994985U CN215994985U CN202023082612.XU CN202023082612U CN215994985U CN 215994985 U CN215994985 U CN 215994985U CN 202023082612 U CN202023082612 U CN 202023082612U CN 215994985 U CN215994985 U CN 215994985U
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Abstract
The application relates to an automatic control system of water-ring type negative pressure suction equipment, which comprises a vacuum tank, a vacuum pump and a vacuum pump, wherein the vacuum tank is communicated with a suction terminal and a vacuum pump air inlet; the exhaust port of the vacuum pump is communicated with the gas-water separator; the water supply port of the gas-water separator is communicated with a vacuum pump, and the gas-water separator is provided with a water inlet communicated with a water inlet electromagnetic valve and a water outlet communicated with a water discharge electromagnetic valve; the automatic control system comprises an automatic regulating circuit for detecting the pressure in the vacuum tank; the driving circuit is connected with the automatic adjusting circuit to control the working state of the vacuum pump; the temperature adjusting circuit is used for detecting the water temperature of the gas-water separator and outputting a drainage signal to drain water when the water temperature is higher than a preset temperature; the water level adjusting circuit is used for detecting the water level in the gas-water separator, outputting a water inlet signal to replenish water when the water level is lower than the lowest water level value, and outputting a closing signal to stop replenishing water when the water level is higher than the maximum water level value so as to reduce the water temperature in the gas-water separator and further avoid the possibility of burning and water leakage of the vacuum pump.
Description
Technical Field
The application relates to the field of negative pressure suction systems, in particular to an automatic control system of water ring type negative pressure suction equipment.
Background
The water-ring type negative pressure suction system is a typical medical central suction system, and uses the water-ring type vacuum pump unit of central suction station as negative pressure source, and utilizes the suction of vacuum pump to make the suction system pipeline attain the required negative pressure value, and can produce suction force in the suction terminals of operating room, rescue room, therapeutic room and various wards, and mainly can be used for sucking phlegm, blood, purulence and other pollutants in the body of patient.
However, the water-ring vacuum pump in the automatic control system of the water-ring negative pressure suction device has certain requirements on water quantity and water temperature in the use process, in the related technology, a user can regularly drain water and replenish water for a steam-water separator connected with the vacuum pump, and when water is replenished or drained untimely, the phenomenon that the water pump is burnt out due to poor heat dissipation of the water pump head or the water pump leaks due to long-term water shortage of a mechanical seal can easily occur; water in a gas-water separator for water supplement continuously runs due to a water circulation pump head, water temperature is easy to be high due to heat dissipation of the pump head, steam is generated in a vacuum pump negative pressure exhaust pipe, and the generated steam has a certain corrosion effect on a pipeline. Therefore, the vacuum pump is simply supplemented with water or drained by a manual operation mode, so that the operation of the vacuum pump is unstable, and the safety and the reliability of the operation of the suction system are reduced.
SUMMERY OF THE UTILITY MODEL
In order to improve the security and the reliability of the automatic control system of the water-ring type negative pressure suction equipment, the application provides the automatic control system of the water-ring type negative pressure suction equipment.
The application provides a water ring formula negative pressure suction equipment automatic control system adopts following technical scheme:
an automatic control system of water-ring type negative pressure suction equipment comprises a vacuum tank, a water-ring type vacuum pump and an air-water separator;
one end of the vacuum tank is communicated with the suction terminal, and the other end of the vacuum tank is communicated with the air inlet of the water ring vacuum pump;
the exhaust port of the water ring vacuum pump is communicated with the gas-water separator;
the water supply port of the gas-water separator is communicated with the water ring vacuum pump;
the gas-water separator is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively communicated with a water inlet electromagnetic valve and a water discharge electromagnetic valve;
the automatic control system comprises an automatic adjusting circuit, a driving circuit, a temperature adjusting circuit and a water level adjusting circuit;
the automatic regulating circuit is used for detecting the pressure in the vacuum tank, outputting a regulating signal when the pressure in the vacuum tank is smaller than a lowest preset value, and outputting a stop signal when the pressure in the vacuum tank is larger than a maximum preset value;
the driving circuit is connected with the automatic adjusting circuit, and drives the water-ring vacuum pump to work when receiving the adjusting signal, and drives the water-ring vacuum pump to stop working until receiving the stopping signal;
the temperature adjusting circuit is used for detecting the water temperature in the gas-water separator, outputting a drainage signal to the drainage electromagnetic valve when the water temperature is higher than a preset temperature, and opening the drainage electromagnetic valve after receiving the drainage signal;
the water level regulating circuit is used for detecting the water level in the gas-water separator, outputting a water inlet signal to the water inlet electromagnetic valve when the water level is lower than the lowest water level value, outputting a closing signal to the water inlet electromagnetic valve when the water level is higher than the maximum water level value, and opening the water inlet electromagnetic valve when receiving the water inlet signal and closing the water inlet electromagnetic valve when receiving the closing signal.
Through adopting above-mentioned technical scheme, the automatically regulated circuit can be according to the gas pressure in the vacuum tank that detects with whether control drive circuit drives the start of water ring vacuum pump. When the water ring vacuum pump works, the water inlet electromagnetic valve and the water outlet electromagnetic valve are controlled to drain water and supplement water to the gas-water separator by detecting the water temperature in the gas-water separator so as to reduce the water temperature in the gas-water separator and keep sufficient water in the gas-water separator, so that the water ring vacuum pump cannot leak water or be burnt, and the safety and the reliability of the water ring vacuum pump during working are effectively improved.
Optionally, the automatic regulating circuit comprises a regulating relay, a cut-off relay and an electric contact pressure gauge,
the electric contact pressure gauge is used for detecting the pressure in the vacuum tank, outputting a boosting adjusting signal when the pressure in the vacuum tank is smaller than the lowest preset value, and outputting a stopping adjusting signal when the pressure in the vacuum tank is larger than the maximum preset value;
the coil of the regulating relay is connected with the electric contact pressure gauge and is used for receiving the boosting regulating signal and outputting the regulating signal after receiving the boosting regulating signal;
and the coil of the cut-off relay is connected with the electric contact pressure gauge and is used for receiving the cut-off adjusting signal and outputting the cut-off signal after receiving the cut-off adjusting signal.
Through adopting above-mentioned technical scheme, can be according to the operating condition of gas pressure in the vacuum chamber in order to control regulation relay and cut off the relay, and then realize automatic control regulation relay and cut off the operating condition of relay.
Optionally, the automatic regulating circuit further comprises an intermediate relay for driving the water ring type vacuum pump to work, a coil of the intermediate relay is connected with the normally open contact of the regulating relay and the normally closed contact of the cut-off relay in series to a power supply, and the first normally open contact of the intermediate relay is connected with the normally open contact of the regulating relay in parallel.
By adopting the technical scheme, the working state of the coil of the intermediate relay can be determined according to the working states of the coil of the regulating relay and the coil of the cut-off relay, the driving circuit can be controlled to work more stably and reliably through the self-locking circuit, and the stability and the reliability of the automatic control system are further improved.
Optionally, the water ring vacuum pump includes first vacuum pump and second vacuum pump, drive circuit includes first contactor and second contactor, the coil of first contactor with intermediate relay's second normally open contact concatenates in the power, the coil of second contactor with intermediate relay's third normally open contact and a circular telegram delay switch concatenate in the power, the normally open contact group of first contactor concatenates in the power supply circuit of first vacuum pump, the normally open contact group of second contactor concatenates in the power supply circuit of second vacuum pump.
Through adopting above-mentioned technical scheme, two water ring vacuum pumps can the start by peak shifting to make the circuit at water ring vacuum pump place can not take place the safety problem because of power overload when water ring vacuum pump starts, and then can protect the component.
Optionally, the contactor further comprises a first indicator light and a second indicator light, the first indicator light is connected in parallel with the coil of the first contactor, and the second indicator light is connected in parallel with the coil of the second contactor.
Through adopting above-mentioned technical scheme, first pilot lamp and second pilot lamp can with the synchronous work of the water ring vacuum pump that corresponds to make the user know the operating condition of two water ring vacuum pumps through first pilot lamp and second pilot lamp, facilitate for the user.
Optionally, the automatic control system further includes a third-gear knob switch, the third-gear knob switch includes a moving contact and two fixed contacts, the moving contact is connected to the power supply, one fixed contact is connected to a power connection terminal of the automatic control system, the other fixed contact is connected to the first contactor coil and the second contactor coil, a first start button and a first close button are connected in series between the first contactor coil and the fixed contact, and a second start button and a second close button are connected in series between the second contactor coil and the fixed contact.
Through adopting above-mentioned technical scheme, manual drive water ring vacuum pump starts, can the person of facilitating the use debug, perhaps the maintenance personal of being convenient for overhauls, and then has improved the reliability of using water ring vacuum pump.
Optionally, a power supply loop of the first vacuum pump is connected in series with a first vacuum circuit breaker, and a power supply loop of the second vacuum pump is connected in series with a second vacuum circuit breaker.
Through adopting above-mentioned technical scheme, can play the function of protection circuit for water ring vacuum pump when beginning work to produce the safety problem when the circuit takes place to transship.
Optionally, a first thermal relay is connected in series in the power supply loop of the first vacuum pump, an auxiliary contact of the first thermal relay is connected in series with the coil of the first contactor, a second thermal relay is connected in series in the power supply loop of the second vacuum pump, and an auxiliary contact of the second thermal relay is connected in series with the coil of the second contactor.
Through adopting above-mentioned technical scheme, can play the function of protection circuit for water ring vacuum pump during operation to produce the safety problem when the circuit takes place to transship or the vacuum pump is inside to appear the short circuit.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the water ring vacuum pump works, the water temperature and the water level in the gas-water separator are detected, and the water discharging and the water supplementing of the gas-water separator are controlled, so that the water temperature in the gas-water separator is reduced, sufficient water is kept in the gas-water separator, the possibility of water leakage or burning of the water ring vacuum pump is further avoided, and the safety and the reliability of the water ring vacuum pump during working are effectively improved;
2. the automatic control system is provided with various protection circuits, so that the safety, stability and reliability of the water-ring vacuum pump during working are improved.
Drawings
Fig. 1 is a schematic view of the apparatus connection of an automatic control system of a water-ring type negative pressure suction apparatus according to an embodiment of the present application.
Fig. 2 is a system schematic diagram of an automatic control system of a water-ring type negative pressure suction apparatus according to an embodiment of the present application.
Fig. 3 is a schematic circuit connection diagram of an automatic control system of the water-ring type negative pressure suction apparatus according to the embodiment of the present application.
Description of reference numerals: 1. a vacuum tank; 2. a gas-water separator; 21. a water inlet electromagnetic valve; 22. a water discharge electromagnetic valve; 3. a one-way valve; 4. an automatic adjustment circuit; 41. an electric contact pressure gauge; 42. an adjustment unit; 43. a cut-off unit; 5. a drive circuit; 51. a first drive circuit; 52. a second drive circuit; 53. a first manual control circuit; 54. a second manual control circuit; 6. a temperature regulating circuit; 61. a temperature controller; 7. a water level adjusting circuit; 71. a water level controller; 8. a water-ring vacuum pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to fig. 1-3 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The embodiment of the application discloses water ring type negative pressure suction equipment automatic control system. Referring to fig. 1, the water ring type negative pressure suction apparatus includes a vacuum tank 1, two water ring vacuum pumps 8, a gas-water separator 2, a check valve 3, a water inlet solenoid valve 21, and a water discharge solenoid valve 22.
One port of the vacuum tank 1 is connected to a suction terminal, the other port is respectively communicated with air inlets of the two water-ring vacuum pumps 8, and a one-way valve 3 is installed on a pipeline communicated with the water-ring vacuum pumps 8 so as to prevent exhaust gas pumped out of the vacuum tank 1 from flowing back to the vacuum tank 1. The exhaust ports of the two water-ring vacuum pumps 8 are communicated with the gas-water separator 2, so that water in the gas-water separator 2 is used for supplying water to the water-ring vacuum pumps 8. The waste gas sucked from the suction terminal sequentially enters the vacuum tank 1, the water ring vacuum pump 8 and the gas-water separator 2, and is finally separated by the gas-water separator 2 and then discharged.
The gas-water separator 2 is further provided with a water inlet and a water outlet, the water inlet is connected with a constant-pressure water source, a water inlet electromagnetic valve 21 and a water outlet electromagnetic valve 22 are respectively arranged on the water inlet and the water outlet, the water source can be tap water or a water tank arranged in a hospital, and the limitation is not only made here.
Referring to fig. 2, the automatic control system includes an automatic adjusting circuit 4, a driving circuit 5, a temperature adjusting circuit 6, and a water level adjusting circuit 7.
When the gas pressure in the vacuum tank 1 is smaller than the minimum preset value, the automatic regulating circuit 4 outputs a regulating signal so that the driving circuit 5 drives the water-ring vacuum pump 8 to start and work; when the gas pressure in the vacuum tank 1 is greater than the minimum preset value, the automatic regulating circuit 4 outputs a cut-off signal to stop the water-ring vacuum pump 8. When the water ring vacuum pump 8 is in the working state and the water temperature in the gas-water separator 2 is detected to reach a certain temperature, the temperature regulating circuit 6 outputs a drainage signal to start the drainage electromagnetic valve 22 for drainage. When the water level in the gas-water separator 2 is lowered to the lowest water level, the water level adjusting circuit 7 outputs a water inlet signal to start the water inlet electromagnetic valve 21 to replenish water into the gas-water separator 2. When the water level in the gas-water separator 2 rises to the highest water level, the water level regulating circuit 7 outputs a closing signal to close the water inlet solenoid valve 21.
Referring to fig. 1 and 3, the automatic adjusting circuit 4 is used to detect the gas pressure in the vacuum tank 1 and control the operation of the vacuum pump according to the gas pressure. In order to detect the gas pressure in the vacuum tank 1, an electric contact pressure gauge 41 is attached to the vacuum tank 1.
The automatic adjustment circuit 4 includes an adjustment unit 42, a cutoff unit 43, and an electric contact pressure gauge 41.
When the gas pressure in the vacuum tank 1 detected by the electro-contact pressure gauge 41 is smaller than the lowest preset value, the electro-contact pressure gauge 41 outputs a boost adjustment signal, and when the gas pressure in the vacuum tank 1 detected by the electro-contact pressure gauge 41 is larger than the maximum preset value, the electro-contact pressure gauge 41 outputs a stop adjustment signal. The COM terminal of the electric contact pressure gauge 41 is connected with one end of the power supply, and the L terminal and the H terminal of the electric contact pressure gauge 41 are respectively connected with the other end of the power supply through the adjusting unit 42 and the stopping unit 43.
The adjusting unit 42 is connected with the electric contact pressure gauge 41 and comprises an adjusting relay KMA3, and two ends of a coil of the adjusting relay KA3 are respectively connected with a power supply and an L terminal of the electric contact pressure gauge 41. When the electric contact pressure gauge 41 outputs a pressure-increasing regulation signal, the coil of the regulation relay KA3 is energized, so that an intermediate regulation signal is output through the regulation relay KA 3.
The cut-off unit 43 is connected with the electric contact pressure gauge 41 and comprises a cut-off relay KA2, and two ends of the cut-off relay KA2 are respectively connected with the power supply and the H terminal of the electric contact pressure gauge 41. When the electric contact pressure gauge 41 outputs the off adjustment signal, the coil of the off relay KA2 is energized, and an intermediate off signal is output through the off relay KA 2.
The regulating unit 42 and the cut-off unit 43 are alternatively connected, in order to switch the regulating unit 42 and the cut-off unit 43 conveniently, a normally closed contact KA2-1 of the cut-off relay KA2 is connected with a coil of the regulating relay KA3 in series, and two ends of a normally open contact KA3-1 of the regulating relay KA3 are connected with an L terminal and a COM terminal of the electric contact pressure gauge 41 respectively.
The automatic control circuit comprises an intermediate relay KA1, a coil of the intermediate relay KA1, a normally closed contact KA2-2 of a cut-off relay KA2 and a normally open contact KA3-2 of an adjusting relay KA3 are connected in series with a power supply, and a normally open contact KA1-1 of an intermediate relay KA1 is connected in parallel with a normally open contact KA3-2 of the adjusting relay KA 3.
When the adjusting unit 42 outputs an intermediate adjusting signal, which indicates that the pressure in the vacuum tank 1 is smaller than the lowest preset value, the normally open contact KA3-2 of the adjusting relay KA3 is closed, the coil of the intermediate relay KA1 is electrified, and therefore the adjusting signal is output through the intermediate relay KA 1; when the cut-off unit 43 outputs the intermediate cut-off signal, which indicates that the pressure in the vacuum tank 1 is greater than the highest preset value, the normally closed contact KA2-2 of the cut-off relay KA2 is opened, the coil of the intermediate relay KA1 loses power, and the cut-off signal is output through the intermediate relay KA 1.
Referring to fig. 2 and 3, the driving circuit 5 is connected to the automatic adjusting circuit 4, and drives the water-ring vacuum pump 8 to operate when receiving the adjusting signal, and controls the water-ring vacuum pump 8 to stop operating when receiving the cutoff signal. The driving circuit 5 includes a third-gear knob switch SA, a first driving circuit 51, a second driving circuit 52, a first manual control circuit 53, and a second manual control circuit 54.
The two water-ring vacuum pumps 8 are respectively a first vacuum pump D1 and a second vacuum pump D2, the first driving circuit 51 comprises a first contactor KM1, a coil of the first contactor KM1 and a normally open contact KA1-2 of an intermediate relay KA1 are connected in series with a power supply, and a normally open contact group KM1-1 of the first contactor KM1 is connected in series in a power supply loop of the first vacuum pump D1; the second driving circuit 52 comprises a second contactor KM2, a coil of the second contactor KM2, a normally open contact KA1-3 of an intermediate relay KA1 and a power-on delay switch SJ are connected in series with a power supply, and a normally open contact group KM2-1 of the second contactor KM2 is connected in series with a power supply loop of a second vacuum pump D2.
When the intermediate relay KA1 outputs an adjusting signal, the normally open contact KA1-2 and the normally open contact KA1-3 are closed, so that the coil of the first contactor KM1 is electrified first, the normally open contact group KM1-1 is closed, and the first vacuum pump D1 starts to work; when the electrifying delay switch SJ is closed, the coil of the second contactor KM2 is electrified, the normally open contact group KM2-1 is closed, and the second vacuum pump D2 starts to work.
The three-gear knob switch SA comprises a moving contact and two fixed contacts, the moving contact is connected with a power supply, one fixed contact is connected with a power supply terminal of the automatic control system to realize the control of powering on and powering off the automatic control system, and the other fixed contact is connected with the first manual control circuit 53 and the second manual control circuit 54 to realize the control of powering on and powering off the first manual control circuit 53 and the second manual control circuit 54.
The first manual control circuit 53 comprises a normally open first start button SB1 and a normally closed first close button TA1, one end of the first close button TA1 is connected with a fixed contact of the third-gear knob switch SA, the other end of the first close button TA1 is connected with the first start button SB1, the other end of the first start button SB1 is connected with a coil of the first contactor KM1, and the other end of the coil of the first contactor KM1 is connected with a power supply.
The second manual control circuit 54 comprises a normally open second start button SB2 and a normally closed second close button TA2, one end of the second close button TA2 is connected with a static contact of the third-gear knob switch SA, the other end of the second close button TA2 is connected with the second start button SB2, the other end of the second start button SB2 is connected with a coil of the second contactor KM2, and the other end of the coil of the second contactor KM2 is connected with a power supply.
When the movable contact of the three-gear knob switch SA is connected with an automatic control system, the two water-ring vacuum pumps 8 are controlled to work by the pressure of the vacuum tank 1 detected by the electric contact pressure gauge 41, and when the movable contact of the three-gear knob switch SA is connected with the first manual control circuit 53 and the second manual control circuit 54, the two water-ring vacuum pumps 8 are controlled to work by the first starting button SB1, the first closing button TA1, the second starting button SB2 and the second closing button TA 2.
It will be appreciated that the first start button SB1, the second start button SB2, the first off button TA1 and the second off button TA2 are self-resetting buttons. Further, the first start button SB1 is connected in parallel with the normally open contact KM1-2 of the first contactor KM1, and the second start button SB2 is connected in parallel with the normally open contact KM2-2 of the second contactor KM 1.
When the moving contact of the third-gear knob switch SA is connected with the first manual control circuit 53 and the second manual control circuit 54, when the first manual control circuit 53 is operated, the first starting button SB1 is manually pressed down, the normally open contact KM1-2 of the first contactor KM1 is closed, and simultaneously the first starting button SB1 automatically resets, so that the first manual control circuit 53 is conducted, the coil of the first contactor KM1 is electrified, the normally open contact group KM1-1 is closed, and the first vacuum pump D1 starts to work. When the first closing button TA1 is manually pressed down, the coil of the first contactor KM1 loses power, so that the normally open contact group KM1-1 and the normally open contact KM1-2 of the first contactor KM1 are disconnected, the first vacuum pump D1 stops working, and the first closing button TA1 automatically resets. The operation mode of the second manual control circuit 54 is the same as that of the first manual control circuit 53, and thus, detailed description thereof will be omitted.
Further, in order to better realize the power-on control of the automatic adjusting circuit 4, a normally open start switch KS is connected in series between the third-gear knob switch SA and the automatic adjusting circuit 4.
The automatic control system of the water-ring type negative pressure suction device also comprises a first indicator light L1 and a second indicator light L2 which display the working state of the water-ring type vacuum pump 8. The first indicator lamp L1 was connected in parallel with the coil of the first contactor KM1 so that the first indicator lamp L1 could be operated in synchronization with the first vacuum pump D1, i.e., the first indicator lamp L1 was turned on when the first vacuum pump D1 was started and the first indicator lamp L1 was turned off when the first vacuum pump D1 was stopped. The second indicator lamp L2 was connected in parallel to the coil of the second contactor KM2 so that the second indicator lamp L2 could be operated in synchronization with the second vacuum pump D2.
In order to ensure that the water-ring vacuum pumps 8 can operate safely, the power supply circuits of the two water-ring vacuum pumps 8 further comprise a first vacuum breaker QF2, a second vacuum breaker QF3, a first thermal relay FR1 and a second thermal relay FR 2. The coils of the first vacuum circuit breaker QF2 and the first thermal relay FR1 are connected in series in the power supply loop of the first vacuum pump D1, and the normally closed contact FR1-1 of the first thermal relay FR1 is connected in series with the coil of the first contactor KM 1.
The coils of the second vacuum circuit breaker QF3 and the second thermal relay FR2 are connected in series in the power supply circuit of the second vacuum pump D2, and the normally closed contact FR2-1 of the second thermal relay FR2 is connected in series with the coil of the second contactor KM 2.
This enables the corresponding drive circuit 5 of the overloaded vacuum pump to be timely disconnected when the water-ring vacuum pump 8 is overloaded during operation, so as to protect the components.
The water level adjusting circuit 7 comprises a water level controller 71 for detecting the water level in the gas-water separator 2, and outputting a water inlet signal when the water level is lower than the lowest water level value to control the water inlet solenoid valve 21 to be opened and supplement water for the gas-water separator 2, and outputting a closing signal when the water level in the gas-water separator 2 is higher than the maximum water level value to control the water inlet solenoid valve 21 to be closed.
The model of the water level controller 71 is a DF-96D water pump full-automatic liquid level controller, which comprises a power supply anode input end, a power supply cathode input end, an anode output end, a cathode output end and A, B, C, D, E five detection electrodes. The anode input end of the power supply is connected with the power supply wiring terminal, the cathode input end of the power supply is connected with the power supply, and the anode output end and the cathode output end are respectively connected with the water inlet electromagnetic valve 21. The detection electrode A is placed at the maximum water level value, the detection electrode B is placed at the minimum water level value, the detection electrode D and the detection electrode E are connected in parallel with the detection electrode C and are connected with the shell of the gas-water separator 2, so that a water inlet signal is output when the water level is lower than the minimum water level value, and a closing signal is output when the water level is raised to the maximum water level value.
The water inlet electromagnetic valve 21 is used for controlling the water source to supplement water to the gas-water separator 2. When receiving the water inlet signal, the water inlet solenoid valve 21 is activated to replenish the gas-water separator 2. When receiving the closing signal, the water inlet solenoid valve 21 is closed to stop the water supplement.
The temperature adjusting circuit 6 comprises a temperature controller 61 for detecting the water temperature in the gas-water separator 2, and outputting a drainage signal to control the drainage electromagnetic valve 22 to open and drain water when the water temperature is higher than a preset temperature; when the water temperature is reduced in a jump manner, a water drainage stopping signal is output to control the water drainage electromagnetic valve 22 to stop draining.
The temperature controller 61 is of the type XMTD-2001 and comprises a power supply anode input end, a power supply cathode input end, a thermocouple contact and an output end, wherein the power supply anode input end is connected with a power supply terminal, the power supply cathode input end is connected with a power supply, and the output end is connected with the drainage electromagnetic valve 22. The thermocouple contact is arranged in the gas-water separator 2, so that when the water temperature detected by the thermocouple contact is higher than the preset temperature, a drainage signal is output, and when the water temperature generates jump cooling, a drainage stopping signal is output.
The drain solenoid valve 22 is used to control the drain operation of the gas-water separator 2. When receiving the drain signal, the drain solenoid valve 22 is activated to discharge the water in the gas-water separator 2. When the stop drain signal is received, the drain solenoid valve 22 is closed to stop the drain.
It will be appreciated that during operation of the water ring vacuum pump 8, the water provided by the gas-water separator 2 within the water ring vacuum pump 8 will continue to heat up as the impeller rotates rapidly, the higher the temperature within the water ring vacuum pump 8, the more water is lost within the water ring vacuum pump 8. The water inlet solenoid valve 21 is controlled to perform water replenishment when the water level controller 71 detects that the water level in the gas-water separator 2 falls to the lowest water level value, and the water inlet solenoid valve 21 is controlled to stop the water replenishment when the water level in the gas-water separator 2 rises to the highest water level value. The water controller 71 automatically controls the water supply to keep a sufficient amount of water in the water ring vacuum pump 8, thereby relieving the water leakage of the water ring vacuum pump 8 caused by water shortage.
When the temperature controller 61 detects that the water temperature in the gas-water separator 2 exceeds a preset temperature value, the water discharging electromagnetic valve 22 is controlled to discharge water, and when the water level controller 71 detects that the water level is lower than the lowest water level value, the water inlet electromagnetic valve 21 is controlled to be opened and water is supplemented. After the water is supplemented for a period of time, when the water temperature jumps, the water discharging electromagnetic valve 22 stops discharging water until the water level rises to the maximum water level value, and the water inlet electromagnetic valve 21 is closed to stop supplementing water. The water discharging and the water replenishing are automatically controlled through the temperature controller 61 and the water level controller 71, so that the working environment suitable for working is kept in the water ring vacuum pump 8, the water ring vacuum pump 8 can not lack of water, the water ring vacuum pump 8 can be cooled, and the safety and the reliability of the water ring vacuum pump 8 in working are improved.
The implementation principle of the automatic control system of the water ring type negative pressure suction equipment in the embodiment of the application is as follows: the water ring vacuum pump 8 can automatically start and stop working through an automatic control system. When the water ring vacuum pump 8 works, the water inlet electromagnetic valve 21 and the water outlet electromagnetic valve 22 are controlled by the water level controller 71 and the temperature controller 61, so that water is drained and replenished in the gas-water separator 2, a water shortage state cannot be generated in the water ring vacuum pump 8, meanwhile, the water ring vacuum pump 8 can be cooled, the possibility that the water ring vacuum pump 8 is burnt due to overheating during working is avoided, and the safety and the reliability of the water ring vacuum pump 8 during working are improved.
The foregoing are preferred embodiments of the present application and are not intended to limit the scope of the application to any feature disclosed in this specification (including the abstract and drawings), which may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (8)
1. The utility model provides a water ring formula negative pressure suction apparatus automatic control system which characterized in that: the water ring type negative pressure suction equipment comprises a vacuum tank (1), a water ring type vacuum pump (8) and a gas-water separator (2);
one end of the vacuum tank (1) is communicated with the suction terminal, and the other end of the vacuum tank is communicated with the air inlet of the water ring vacuum pump (8);
the exhaust port of the water ring vacuum pump (8) is communicated with the gas-water separator (2);
a water supply port of the gas-water separator (2) is communicated with the water ring vacuum pump (8);
the gas-water separator (2) is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively communicated with a water inlet electromagnetic valve (21) and a water discharge electromagnetic valve (22);
the automatic control system comprises an automatic adjusting circuit (4), a driving circuit (5), a temperature adjusting circuit (6) and a water level adjusting circuit (7);
the automatic regulating circuit (4) is used for detecting the pressure in the vacuum tank (1), outputting a regulating signal when the pressure in the vacuum tank (1) is smaller than a lowest preset value, and outputting a stopping signal when the pressure in the vacuum tank (1) is larger than a maximum preset value;
the driving circuit (5) is connected with the automatic adjusting circuit (4), and when receiving an adjusting signal, the driving circuit drives the water-ring vacuum pump (8) to work, and when receiving a cut-off signal, the driving circuit drives the water-ring vacuum pump (8) to stop working;
the temperature adjusting circuit (6) is used for detecting the water temperature in the gas-water separator (2), when the water temperature is higher than a preset temperature, a drainage signal is output to the drainage electromagnetic valve (22), and the drainage electromagnetic valve (22) is opened after receiving the drainage signal;
the water level regulating circuit (7) is used for detecting the water level in the gas-water separator (2), and when the water level is lower than the lowest water level value, the water inlet signal is output to the water inlet electromagnetic valve (21) until the water level is higher than the maximum water level value, the water inlet electromagnetic valve (21) is opened when receiving the water inlet signal, and the water inlet electromagnetic valve is closed when receiving the closing signal.
2. The automatic control system of water-ring type negative pressure suction equipment of claim 1, characterized in that: the automatic regulating circuit (4) comprises a regulating relay, a stop relay and an electric contact pressure gauge (41),
the electric contact pressure gauge (41) is used for detecting the pressure in the vacuum tank (1), outputting a boosting adjusting signal when the pressure in the vacuum tank (1) is smaller than a lowest preset value, and outputting a stopping adjusting signal when the pressure in the vacuum tank (1) is larger than a maximum preset value;
the coil of the regulating relay is connected with the electric contact pressure gauge (41) and is used for receiving the boosting regulating signal, and the regulating signal is output after the boosting regulating signal is received;
and a coil of the cut-off relay is connected with the electric contact pressure gauge (41) and is used for receiving the cut-off adjusting signal, and the cut-off signal is output after the cut-off adjusting signal is received.
3. The automatic control system of water-ring type negative pressure suction equipment of claim 2, characterized in that: the automatic regulating circuit (4) further comprises an intermediate relay used for driving the water ring vacuum pump (8) to work, a coil of the intermediate relay is connected with a normally open contact of the regulating relay and a normally closed contact of the cut-off relay in series to a power supply, and a first normally open contact of the intermediate relay is connected with the normally open contact of the regulating relay in parallel.
4. The automatic control system of water-ring type negative pressure suction equipment of claim 3, characterized in that: water ring vacuum pump (8) include first vacuum pump and second vacuum pump, drive circuit (5) include first contactor and second contactor, the coil of first contactor with intermediate relay's second normally open contact concatenates in the power, the coil of second contactor with intermediate relay's third normally open contact and a circular telegram delay switch concatenate in the power, the normally open contact group of first contactor concatenates in the power supply circuit of first vacuum pump, the normally open contact group of second contactor concatenates in the power supply circuit of second vacuum pump.
5. The automatic control system of water-ring type negative pressure suction equipment of claim 4, characterized in that: the contactor further comprises a first indicator light and a second indicator light, the first indicator light is connected with the coil of the first contactor in parallel, and the second indicator light is connected with the coil of the second contactor in parallel.
6. The automatic control system of water-ring type negative pressure suction equipment of claim 5, characterized in that: the automatic control system further comprises a third-gear knob switch, the third-gear knob switch comprises a moving contact and two fixed contacts, the moving contact is connected with a power supply, one fixed contact is connected with a power supply wiring terminal of the automatic control system, the other fixed contact is connected with a first contactor coil and a second contactor coil, a first starting button and a first closing button are connected between the first contactor coil and the fixed contact in series, and a second starting button and a second closing button are connected between the second contactor coil and the fixed contact in series.
7. The automatic control system of water-ring type negative pressure suction equipment of claim 4, characterized in that: a first vacuum circuit breaker is connected in series in a power supply loop of the first vacuum pump, and a second vacuum circuit breaker is connected in series in a power supply loop of the second vacuum pump.
8. The automatic control system of water-ring type negative pressure suction equipment of claim 4, characterized in that: the vacuum pump comprises a first vacuum pump, a first contactor, a second vacuum pump, a second contactor, a first thermal relay, a second thermal relay and a second vacuum pump, wherein the first thermal relay is connected in series in a power supply loop of the first vacuum pump, an auxiliary contact of the first thermal relay is connected in series with a coil of the first contactor, and the second thermal relay is connected in series in a power supply loop of the second vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023082612.XU CN215994985U (en) | 2020-12-18 | 2020-12-18 | Automatic control system of water-ring type negative pressure suction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023082612.XU CN215994985U (en) | 2020-12-18 | 2020-12-18 | Automatic control system of water-ring type negative pressure suction equipment |
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| CN215994985U true CN215994985U (en) | 2022-03-11 |
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| CN202023082612.XU Active CN215994985U (en) | 2020-12-18 | 2020-12-18 | Automatic control system of water-ring type negative pressure suction equipment |
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| Country | Link |
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