CN102032166B - Method for detecting control signal of negative pressure pump - Google Patents
Method for detecting control signal of negative pressure pump Download PDFInfo
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- CN102032166B CN102032166B CN 201010571196 CN201010571196A CN102032166B CN 102032166 B CN102032166 B CN 102032166B CN 201010571196 CN201010571196 CN 201010571196 CN 201010571196 A CN201010571196 A CN 201010571196A CN 102032166 B CN102032166 B CN 102032166B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 51
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 7
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 230000011664 signaling Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 26
- 239000012530 fluid Substances 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention relates to a method for detecting a control signal of a negative pressure pump, which comprises the following steps of: 1 initializing a system; 2 judging whether a liquid level switch arranged in fluid media is closed or not by a micro controller unit (MCU) chip module of a control circuit, if so, executing the next step, and otherwise, returning and continuing to judge whether theliquid level switch is closed or not; 3 running a motor; 4 judging whether a switch for controlling a resistor of a sensor is switched in or not by the MCU chip module, if so, executing the next step, and otherwise, executing the step 7; 5 running the motor continuously for 98+/-30 seconds; 6 stopping running the motor, lightening a signal lamp while giving an alarm from a buzzer, and returning the step 1; 7 running the motor continuously for 50+/-25 seconds; and 8 stopping running the motor, and returning the step 1. By the detection method, the flow of the negative pressure pump can be controlled accurately, alarms can be given out in time during failure, the change condition of the temperature, water quality, water pressure and water level of the fluid media such as water can be detected accurately, and monitored parameters also can be adjusted automatically according to the change of the parameters until the requirement is met.
Description
The present patent application is that application number is 200810217966.5, and the applying date is on November 26th, 2008, and name is called the dividing an application of patent application of " detecting method of negative pressure pump and control signal thereof ".
[technical field]
The present invention relates to utilize and directly act on the pump that the negative pressure that is pumped liquid is aspirated fluid, particularly relate to the negative pressure pump that can accurately detect coolant-temperature gage, water quality, hydraulic pressure and SEA LEVEL VARIATION situation in the water purification system, especially relate to the detecting method of negative pressure pump control signal.
[background technique]
The prior art negative pressure pump comprises housing, be installed in the motor in the housing and be installed in impeller on the motor shaft; Impeller is made high speed rotary motion by motor driving during negative pressure pump work, flowing medium such as water on the impeller between each blade also rotate thereupon, under centrifugal action, flowing medium such as water are done radial motion by mind-set edge in the impeller, flowing medium such as water obtain to leave impeller at a high speed behind the energy and enter in the housing in the process of impeller of flowing through, in housing, enlarged gradually by runner and slow down, part kinetic energy is converted into static energy, reach higher pressure, at last along transverse movement and flow into outlet pipe.The negative pressure pump of prior art is set directly in flowing medium such as the water, understands fluid medium like this such as water generates is polluted; If flowing medium corrosivity is more intense, then can produce corrosion-damagedly to negative pressure pump, particularly this corrosion is bigger to the motor in negative pressure pump influence, thereby requires the negative pressure pump good airproof performance, and sealing selected materials higher requirement is also arranged, this correspondingly can increase the whole cost of negative pressure pump.
The prior art negative pressure pump can't be accomplished intelligence, accurately control, such as can not the test fluid medium such as the indexs such as water temperature, hydraulic pressure, water quality and water level of water, and relatively poor to the flow control ratio, can not in time report to the police when fault is arranged.
[summary of the invention]
The technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and detecting method that a kind of negative pressure pump control signal is provided, when making the negative pressure pump flow control accurately and fault is arranged, this detecting method can in time report to the police, and temperature, water quality, hydraulic pressure, the situation of change of water level of test fluid medium such as water exactly, can also carry out the adjustment of monitored parameter according to the variation of parameter automatically, till meeting the requirements.
The technological scheme that the present invention solve the technical problem employing is:
A kind of detecting method of negative pressure pump control signal is provided, comprises the steps:
1. system initialization;
2. the MCU chip module of control circuit judges whether the liquid-level switch that is arranged in the flowing medium is closed, and "Yes" is carried out next step, and "No" is returned and continued to judge whether described liquid-level switch is closed;
3. motor operation;
4. the MCU chip module of described control circuit is judged the whether conducting of switch of control sensor resistance, and "Yes" is carried out next step, and the "No" execution in step 7.;
5. motor moves 98 ± 30 seconds continuously;
6. motor is out of service, and signaling lamp is bright, and meanwhile, buzzer sends chimes of doom, turns back to step 1.;
7. motor moves 50 ± 25 seconds continuously;
8. motor is out of service, turns back to step 1..
The negative pressure pump that detecting method of the present invention is controlled comprises upper and lower casing, is installed in the interior motor of described upper and lower casing, is installed in impeller and control circuit on the described motor shaft; Described motor is electrically connected with described control circuit by the conduction wire harness, and described motor is dc brushless motor.Described negative pressure pump also comprises first filter member, second filter member, the 3rd filter member, the 4th filter member, left and right supporting frame, shock-proof block, motor vibration damping supporting frame and negative pressure pipe; Described upper shell is provided with air outlet and breach, and described lower shell body is provided with suction port and breach; Be symmetrical set described first, second filter member and left and right supporting frame in the described lower shell body; Described motor is arranged in the middle of the described lower shell body by described shock-proof block and motor vibration damping supporting frame, wherein said shock-proof block bottom is arranged between this motor rear end and the described right supporting frame, described motor vibration damping supporting frame bottom is arranged on this motor front end and is fixed on the described lower shell body, and described shock-proof block and motor vibration damping supporting frame prevent described motor axial float together and play the effect of vibration damping; The lower shell body that is positioned at described electric machine casing place arranges described the 4th filter member; In the lower shell body between described left supporting frame and motor vibration damping supporting frame described the 3rd filter member is set; The described negative pressure seal of tube is arranged on the suction port place of described lower shell body; Described upper shell is fastened on the described lower shell body and is fixing with it, and described upper shell inner chamber is withstood on the top of described first to fourth filter member, left and right supporting frame, shock-proof block and motor vibration damping supporting frame; The breach of described upper shell and the breach of lower shell body lump together and form a lead-in wire groove, and described conduction wire harness passes from this lead-in wire groove sealing.
Compare with prior art, the beneficial effect of the detecting method of negative pressure pump control signal of the present invention is:
Can in time report to the police when 1, described detecting method can make the negative pressure pump flow control accurately and fault is arranged;
2, the control circuit of described detecting method employing is MCU (Micro Controller Unit, microcontroller) chip module, and by be arranged at flowing medium realize as the sensor in the water as described in the intelligent control of negative pressure pump, the situation of change of the temperature of test fluid medium such as water, water quality, hydraulic pressure, water level exactly, and can carry out the adjustment of monitored parameter according to the variation of parameter automatically, till meeting the requirements;
3, adopt dc brushless motor in the negative pressure pump that described detecting method is controlled, have good controllability, accurately control the flow that the pressure head of described negative pressure pump reaches the control negative pressure pump thereby can do stepless speed regulation by PWM alignment circuit module;
4, the negative pressure pump controlled of described detecting method is only introduced in flowing medium such as the water by the external intake pipe of three-way valve by the negative pressure pipe on it, absorbs water by negative pressure, and described negative pressure pump body needn't be inserted in the water;
5, the negative pressure pump controlled of described detecting method is provided with a plurality of filter member, can make the fluid such as the air that enter in the housing pure, does not have minute impurities; And these a plurality of filter member can also play the effect that noise was pressed and reduced in storage;
6, the left supporting frame of the negative pressure pump controlled of described detecting method is provided with left damping ring, right supporting frame is provided with right damping ring and motor vibration damping supporting frame is provided with damping ring, thereby motor vibrations when work are very little.
[description of drawings]
Fig. 1 is the process blocks schematic representation of negative pressure pump control signal detecting method of the present invention;
Fig. 2 is the electric principle schematic of the control circuit of described detecting method employing;
Fig. 3 is the axonometric projection schematic representation of the negative pressure pump controlled of described detecting method;
The part cross-sectional schematic is looked on left side when Fig. 4 is described negative pressure pump removal upper shell;
Master when Fig. 5 is described negative pressure pump removal upper shell looks cross-sectional schematic;
Fig. 6 is that the master of housing under the described negative pressure pump looks schematic representation;
Fig. 7 is along the cross-sectional schematic of A-A among Fig. 6;
Fig. 8 is that the master of housing on the described negative pressure pump looks schematic representation;
Fig. 9 is along the cross-sectional schematic of B-B among Fig. 8;
Figure 10 is that the master of the motor vibration damping supporting frame of described negative pressure pump looks cross-sectional schematic;
Figure 11 is that schematic representation is looked on the right side of Figure 10;
Figure 12 is that the master of the left supporting frame of described negative pressure pump looks cross-sectional schematic;
Figure 13 is that schematic representation is looked on the right side of Figure 12;
Figure 14 is that the master of the right supporting frame of described negative pressure pump looks cross-sectional schematic;
Figure 15 is that schematic representation is looked on the right side of Figure 14;
Figure 16 is that the master of the rubber shock-absorbing circle of described negative pressure pump looks schematic representation;
Figure 17 is that schematic representation is looked on the right side of Figure 16;
Figure 18 is that schematic representation is looked on the right side of the rubber shock-proof block of described negative pressure pump;
Figure 19 is along the cross-sectional schematic of C-C among Figure 18;
Figure 20 is that the master of the impeller of described negative pressure pump looks cross-sectional schematic;
Figure 21 is that schematic representation is looked on the right side of Figure 20;
Figure 22 is that the master of the connecting plate of described negative pressure pump looks cross-sectional schematic;
Figure 23 is that schematic representation is looked on the right side of Figure 22;
Figure 24 is that the master of the fan housing of described negative pressure pump looks cross-sectional schematic;
Figure 25 is that schematic representation is looked on the right side of Figure 24.
[embodiment]
Below in conjunction with each accompanying drawing the present invention is described in further detail.
Referring to Fig. 1 and Fig. 2, a kind of detecting method of negative pressure pump control signal comprises the steps:
1. system initialization;
2. the MCU chip module 91 of control circuit 90 judges whether the liquid-level switch that is arranged in the flowing medium is closed, and "Yes" is carried out next step, and "No" is returned and continued to judge whether described liquid-level switch is closed;
3. motor operation;
4. the MCU chip module 91 of described control circuit 90 is judged the whether conducting of switch of control sensor resistances, and "Yes" is carried out next step, and the "No" execution in step 7.;
5. motor moves 98 ± 30 seconds continuously, as moves 98 ± 3 seconds;
6. motor is out of service, and signaling lamp is bright, and is bright as amber light, and meanwhile, buzzer sends chimes of doom, turns back to step 1.;
7. motor moves 50 ± 25 seconds continuously, as moves 50 ± 3 seconds;
8. motor is out of service, turns back to step 1..
Referring to Fig. 2 to Fig. 5, Fig. 7 and Fig. 9, the negative pressure pump that detecting method of the present invention is controlled comprises upper and lower casing 11,12, is installed in motor 21 in the described upper and lower casing, is installed in impeller 22 and control circuit 90 on 21 in the described motor; Described motor 21 is electrically connected with described control circuit 90 by conduction wire harness 25, and described motor 21 is dc brushless motors.Described negative pressure pump also comprises first filter member 31, second filter member 32, the 3rd filter member 33, the 4th filter member 34, left and right supporting frame 51,52, shock-proof block 43, motor vibration damping supporting frame 61 and negative pressure pipe 71; Described upper shell 11 is provided with air outlet 111 and breach 112, and described lower shell body 12 is provided with suction port 121 and breach 122; Be symmetrical set described first, second filter member 31,32 and left and right supporting frame 51,52 in the described lower shell body 12; Described motor 21 is arranged on described lower shell body 12 centres by described shock-proof block 43 and motor vibration damping supporting frame 61, wherein said shock-proof block 43 bottoms are arranged between these motor 21 rear ends and the described right supporting frame 52, described motor vibration damping supporting frame 61 bottoms are arranged on these motor 21 front ends and are fixed on the described lower shell body 12, and described shock-proof block 43 and motor vibration damping supporting frame 61 prevent described motor 21 axial floats together and play the effect of vibration damping; The lower shell body 12 that is positioned at described motor 21 housing places arranges described the 4th filter member 34; Described the 3rd filter member 33 is set in the lower shell body 12 between described left supporting frame 51 and motor vibration damping supporting frame 61; Described negative pressure pipe 71 sealings are arranged on suction port 121 places of described lower shell body 12; Described upper shell 11 is fastened on the described lower shell body 12 and is fixing with it, and described upper shell 11 inner chambers are withstood on the top of described first to fourth filter member 31～34, left and right supporting frame 51,52, shock-proof block 43 and motor vibration damping supporting frame 61; The breach 112 of described upper shell 11 lumps together with the breach 122 of lower shell body 12 and forms a lead-in wire groove 13, and described conduction wire harness 25 passes from these lead-in wire groove 13 sealings.
Referring to Fig. 3 to Fig. 9, described upper shell 11 and lower shell body 12 are the semicircular shell of symmetry, have the groove 113,114,115,123,124,125 of symmetry in two semicircular shells, be used for symmetry card respectively to put described left supporting frame 51, motor vibration damping supporting frame 61 and right supporting frame 52.
Referring to Fig. 5 to Figure 15, be arranged in the groove 113,123 of described upper shell 11 and lower shell body 12 symmetries after being with left damping ring 41 on the described left supporting frame 51; Be arranged in the groove 115,125 of described upper shell 11 and lower shell body 12 symmetries after being with right damping ring 42 on the described right supporting frame 52; Splice and be arranged in the groove 114,124 of described upper shell 11 and lower shell body 12 symmetries behind the damping ring 44 in described motor vibration damping supporting frame 61 outer rings.
Described left damping ring 41, right damping ring 41, shock-proof block 43 and damping ring 44 materials are rubber.Left side supporting frame 51, right supporting frame 52 and motor vibration damping supporting frame 61 play the effect of the location being installed and supporting, and the left damping ring 41 on it, right damping ring 41 and damping ring 44 play the effect of damping.
Referring to Fig. 5, Figure 14, Figure 15, Figure 18 and Figure 19, described shock-proof block 43 1 ends are provided with the cavity 431 adaptive with outer ring, described motor 21 rear end bearing hole 211, and the other end is provided with boss 432; Described right supporting frame 52 is provided with the groove 521 adaptive with the boss 432 of described shock-proof block 43; The cavity 431 of described shock-proof block 43 is enclosed within on the outer ring, described motor 21 rear end bearing hole 211, and the boss of described shock-proof block 43 withstands in the groove 521 of described right supporting frame 52.
Referring to Fig. 5, described first, second filter member 31,32 is circular, and described the 3rd, the 4th filter member 33,34 is ring, and described the 4th filter member 34 is enclosed within on described motor 21 housings, and described the 3rd filter member 33 is enclosed within on the described motor vibration damping supporting frame 61.Flowing medium enters lower shell body from negative pressure pipe 71 and filters out minute impurities through first to fourth filter member 31～34; First to fourth filter member 31～34 can also play the effect that noise was pressed and reduced in storage.
Referring to Fig. 5, Figure 10, Figure 11, Figure 20 to Figure 25, also be provided with connecting plate 23 between described impeller 22 and described motor 21 front ends, on the described connecting plate 23 fan housing 24 is arranged fixedly, described fan housing 24 covers described impeller 22; Described motor vibration damping supporting frame 61 is provided with cavity volume 611, and described fan housing 24 is arranged in the cavity volume 611 of described motor vibration damping supporting frame 61.Motor 21, impeller 22, connecting plate 23, fan housing 24 and conduction wire harness 25 are assembled together and form an electric machine assembly 20, and this electric machine assembly 20 is installed in the upper and lower casing 11,12 by motor vibration damping supporting frame 61 and damping ring 44.
Referring to Fig. 2, described control circuit 90 comprises MCU chip module 91, motor-drive circuit module 92, closed control circuit module 93, PWM alignment circuit module 94, current detection circuit module 95, voltage detecting circuit module 96, state display output circuit module 97 and testing signal input circlult module 98; Each sensor that is arranged in the flowing medium comprises that with the index parameter of described flowing medium temperature 981, pressure 982, position 983 and quality 984 are transported to described MCU chip module 91 by described testing signal input circlult module 98, and 91 pairs of these signals of described MCU chip module are handled; Send instruction and give described PWM alignment circuit module 94, described PWM alignment circuit module 94 drives described motor 21 work by described motor-drive circuit module 92, and described motor 21 arrives described MCU chip module 91 by described closed control circuit module 93 with signal feed back; The input of described current detection circuit module 95 is described motor-drive circuit modules 92, and it outputs to described MCU chip module 91; Described voltage detecting circuit module 96 also outputs to described MCU chip module 91; Described MCU chip module 91 comprises that with each parameter electric current 971, voltage 972, temperature 973 and rotating speed 974 show by described state display output circuit module 97.
Referring to Fig. 4, described negative pressure pipe 71 is arranged on air outlet 111 1 ends of described lower shell body 12 by elbow 72 and sealing gasket 73 sealings, be suction port 121 places that elbow 72 and sealing gasket 73 usefulness screws 82 are fixed on described lower shell body 12, negative pressure pipe 71 is socketed on the elbow 72 hermetically.
Referring to Fig. 5, when work, three-way valve or four-way valve (not drawing among the figure) only need be tightly connected at the free end 711 of negative pressure pipe 71, another sealing joint of three-way valve or four-way valve connects an intake pipe (not drawing among the figure), this intake pipe is introduced in flowing medium such as the water, started described negative pressure pump and get final product.
Referring to Fig. 3, Fig. 5 to Fig. 9, described upper shell 11 and lower shell body 12 usefulness screws 81 intersect fastening, namely screw 81 is fixed in the screw hole 127 of described lower shell body 12 after passing the through hole 116 of described upper shell 11, and adjacent another screw 81 is fixed in the screw hole 117 of described upper shell 11 after passing the through hole 126 of described lower shell body 12 therewith.
The above embodiment has only expressed preferred implementation of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention; Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention; Therefore, all equivalents and modifications of doing with claim scope of the present invention all should belong to the covering scope of claim of the present invention.
Claims (10)
1. the detecting method of a negative pressure pump control signal comprises the steps,
1. system initialization,
2. the MCU chip module (91) of control circuit (90) judges whether the liquid-level switch that is arranged in the flowing medium is closed, and "Yes" is carried out next step, and "No" is returned and continued to judge whether described liquid-level switch is closed;
3. motor operation;
4. the MCU chip module (91) of described control circuit (90) judges that control is arranged on the whether conducting of switch of the sensor resistance of each sensor in the flowing medium, and "Yes" is carried out next step, and the "No" execution in step 7.;
5. motor moves 98 ± 3 seconds continuously;
6. motor is out of service, and signaling lamp is bright, and meanwhile, buzzer sends chimes of doom, turns back to step 1.;
7. motor moves 50 ± 3 seconds continuously;
8. motor is out of service, turns back to step 1..
2. the detecting method of negative pressure pump control signal according to claim 1 is characterized in that:
The negative pressure pump that this detecting method is controlled comprises upper and lower casing (11,12), is installed in the interior motor (21) of described housing, is installed in impeller (22) and control circuit (90) on described motor (21) axle; Described motor (21) is electrically connected with described control circuit (90) by conduction wire harness (25);
Described negative pressure pump also comprises first filter member (31), second filter member (32), the 3rd filter member (33), the 4th filter member (34), left and right supporting frame (51,52), shock-proof block (43), motor vibration damping supporting frame (61) and negative pressure pipe (71); Described upper shell (11) is provided with air outlet (111) and breach (112), and described lower shell body (12) is provided with suction port (121) and breach (122); Be symmetrical set described first, second filter member (31,32) and left and right supporting frame (51,52) in the described lower shell body (12); Described motor (21) is arranged on described lower shell body (12) centre by described shock-proof block (43) and motor vibration damping supporting frame (61), wherein said shock-proof block (43) is arranged between this motor (21) rear end and the described right supporting frame (52), described motor vibration damping supporting frame (61) is arranged on this motor (21) front end and is fixed on the described lower shell body (12), and described shock-proof block (43) and motor vibration damping supporting frame (61) prevent described motor (21) axial float together and play the effect of vibration damping; The lower shell body (12) that is positioned at described motor (21) housing place arranges described the 4th filter member (34); The lower shell body (12) that is positioned between described left supporting frame (51) and the motor vibration damping supporting frame (61) arranges described the 3rd filter member (33); Described negative pressure pipe (71) sealing is arranged on the suction port (121) of described lower shell body (12) and locates; Described upper shell (11) is fastened on described lower shell body (12) and goes up and fix with it, and described upper shell (11) inner chamber is withstood on the top of described first to fourth filter member (31～34), left and right supporting frame (51,52), shock-proof block (43) and motor vibration damping supporting frame (61); The breach (112) of described upper shell (11) lumps together with the breach (122) of lower shell body (12) and forms a lead-in wire groove (13), and described conduction wire harness (25) passes from this lead-in wire groove (13) sealing.
3. the detecting method of negative pressure pump control signal according to claim 2 is characterized in that:
Described upper shell (11) and lower shell body (12) are the semicircular shell of symmetry, have the groove (113,114,115 of symmetry in two semicircular shells, 123,124,125), being used for symmetry card respectively puts described left supporting frame (51), motor vibration damping supporting frame (61) and right supporting frame (52).
4. the detecting method of negative pressure pump control signal according to claim 3 is characterized in that:
Be arranged in the groove (113,123) of described upper shell (11) and lower shell body (12) symmetry after being with left damping ring (41) on the described left supporting frame (51); Be arranged in the groove (115,125) of described upper shell (11) and lower shell body (12) symmetry after being with right damping ring (42) on the described right supporting frame (52); Splice and be arranged on behind the damping ring (44) in the groove (114,124) of described upper shell (11) and lower shell body (12) symmetry in described motor vibration damping supporting frame (61) outer ring.
5. the detecting method of negative pressure pump control signal according to claim 2 is characterized in that:
Described shock-proof block (43) one ends are provided with the cavity (431) adaptive with outer ring, described motor (21) rear end bearing hole (211), and the other end is provided with boss (432); Described right supporting frame (52) is provided with the groove (521) adaptive with the boss (432) of described shock-proof block (43); The cavity (431) of described shock-proof block (43) is enclosed within on the outer ring, described motor (21) rear end bearing hole (211), and the boss of described shock-proof block (43) withstands in the groove (521) of described right supporting frame (52).
6. the detecting method of negative pressure pump control signal according to claim 2 is characterized in that:
Also be provided with connecting plate (23) between described impeller (22) and described motor (21) front end, described connecting plate (23) is gone up fixedly fan housing (24), and described fan housing (24) covers described impeller (22); Described motor vibration damping supporting frame (61) is provided with cavity volume (611), and described fan housing (24) is arranged in the cavity volume (611) of described motor vibration damping supporting frame (61).
7. the detecting method of negative pressure pump control signal according to claim 2 is characterized in that:
Described negative pressure pipe (71) is located by the suction port (121) that elbow (72) and sealing gasket (73) sealing are arranged on described lower shell body (12).
8. the detecting method of negative pressure pump control signal according to claim 2 is characterized in that:
Have through hole (119) on the described upper shell (11), when this through hole (119) when blocking, can increase the air pressure in the described housing, when this through hole (119) when not blocking, can slowly shed the air pressure in the described housing.
9. the detecting method of negative pressure pump control signal according to claim 2 is characterized in that:
Described motor (21) is dc brushless motor.
10. according to the detecting method of each described negative pressure pump control signal of claim 1 to 9, it is characterized in that:
Described control circuit (90) also comprises motor-drive circuit module (92), closed control circuit module (93), PWM alignment circuit module (94), current detection circuit module (95), voltage detecting circuit module (96), state display output circuit module (97) and testing signal input circlult module (98); Each sensor that is arranged in the flowing medium comprises temperature (981) with the index parameter of described flowing medium, pressure (982), position (983) and quality (984) are transported to described MCU chip module (91) by described testing signal input circlult module (98), described MCU chip module (91) is handled this signal, send instruction and give described PWM alignment circuit module (94), described PWM alignment circuit module (94) drives described motor (21) work by described motor-drive circuit module (92), and described motor (21) arrives described MCU chip module (91) by described closed control circuit module (93) with signal feed back; The input of described current detection circuit module (95) is described motor-drive circuit module (92), and it outputs to described MCU chip module (91); Described voltage detecting circuit module (96) also outputs to described MCU chip module (91); Described MCU chip module (91) comprises that with each parameter electric current (971), voltage (972), temperature (973) and rotating speed (974) show by described state display output circuit module (97).
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| EP2906339B1 (en) * | 2012-10-12 | 2019-05-15 | Buckman Laboratories International, Inc. | Method for monitoring and controlling the exothermic chemical reaction between ammonia and sodium hypochlorite |
| CN103615382A (en) * | 2013-12-17 | 2014-03-05 | 浙江丰源泵业有限公司 | Intelligent submersible electric pump |
| CN104501905A (en) * | 2014-12-15 | 2015-04-08 | 集美大学 | Urban intelligent street ponding emergency alarm processing system |
| CN109083834B (en) * | 2018-10-12 | 2023-11-07 | 广东电网有限责任公司 | A trouble stops pump detection and alarm device for automatic water pump |
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| CN2168107Y (en) * | 1993-07-08 | 1994-06-08 | 金山耐酸泵有限公司 | Vacuum sealed centrifugal pump |
| US5797722A (en) * | 1996-04-26 | 1998-08-25 | Toyota Jidosha Kabushiki Kaisha | Fluid pump |
| WO2004019744A2 (en) * | 2002-08-30 | 2004-03-11 | Oase Gmbh | Sludge extractor |
| CN1300450C (en) * | 2003-07-14 | 2007-02-14 | 本田技研工业株式会社 | Negative pressure pump |
| CN101463840B (en) * | 2008-11-26 | 2011-04-20 | 东明机电（深圳）有限公司 | Negative pressure pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102032166A (en) | 2011-04-27 |
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Address after: 518104 Guangdong city of Shenzhen province Baoan District manhole Street manhole West Maan Shan Industrial Park, Tai Tong Industrial Zone No. 1, No. 2, No. 3 Patentee after: SHENZHEN DONGMING MOTOR ELECTRIC CO.,LTD. Address before: 518104 Guangdong city of Shenzhen Province in Western Baoan District manhole Maan Shan Industrial Park Ditang Industrial Zone No. 2 Patentee before: DONGMING MECHANICAL AND ELECTRICAL (SHENZHEN) Co.,Ltd. |
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