CN211956697U - Alarm protection device of electric suction apparatus - Google Patents
Alarm protection device of electric suction apparatus Download PDFInfo
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- CN211956697U CN211956697U CN202021100790.8U CN202021100790U CN211956697U CN 211956697 U CN211956697 U CN 211956697U CN 202021100790 U CN202021100790 U CN 202021100790U CN 211956697 U CN211956697 U CN 211956697U
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Abstract
The utility model discloses an electric suction apparatus's alarm protection device, including first integrated circuit, the second integrated circuit, first electric capacity, the second electric capacity, the third electric capacity, the fourth electric capacity, the fifth electric capacity, the sixth electric capacity, first resistance, the second resistance, the third resistance, the fourth resistance, the triode, the relay, bee calling organ and electrode, first integrated circuit's model is TTP223, the model of second integrated circuit is LM555, in this electric suction apparatus's alarm protection device, the response electrode pastes in bottle side suitable position, the liquid level of waste liquid is surveyed in the electric capacity change that utilizes the waste liquid, can prevent with liquid direct contact in the bottle, cause the unnecessary pollution, the practicality of the device has been improved.
Description
Technical Field
The utility model relates to an alarm device technical field, concretely relates to alarm protection device of electric suction apparatus.
Background
The protection circuit of conventional electric attractors generally uses contact electrodes to detect the liquid level in a negative pressure bottle. The contact electrode of the protection circuit is easily polluted, such as corrosion and electric corrosion of the electrode, so that the liquid in the negative pressure bottle can be easily polluted, and the practicability of the protection circuit is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides an alarm protection device of an electric suction apparatus for overcoming the defects.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
an alarm protection device of an electric suction apparatus comprises a first integrated circuit, a second integrated circuit, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a triode, a relay, a buzzer and an electrode, wherein the model of the first integrated circuit is TTP223, the model of the second integrated circuit is LM555, the fifth end of the first integrated circuit is grounded through the first capacitor and the second capacitor respectively, the fourth end of the first integrated circuit is connected with the fifth end of the first integrated circuit, the fourth end of the first integrated circuit is externally connected with a 5V direct current voltage power supply through the first resistor, the third end of the first integrated circuit is electrically connected with the electrode and grounded through the fourth capacitor, the second end of the first integrated circuit is grounded, the first end of the first integrated circuit is connected with the second end of the second integrated circuit, the second end of the second integrated circuit is externally connected with a 5V direct-current voltage power supply through a second resistor, the fourth end and the eighth end of the second integrated circuit are externally connected with the 5V direct-current voltage power supply, the first end of the second integrated circuit is grounded through a fifth capacitor, the grounding end of the second integrated circuit is grounded, the sixth end of the second integrated circuit is connected with the seventh end, the sixth end of the second integrated circuit is grounded through a sixth capacitor, the sixth end of the second integrated circuit is externally connected with the 5V direct-current voltage power supply through a third resistor, the third end of the second integrated circuit is grounded through a buzzer, the third end of the second integrated circuit is connected with the base electrode of the triode through a fourth resistor, the emitting electrode of the triode is grounded, and the collecting electrode of the triode is externally connected with the 5V direct-current voltage power supply through a coil of a.
In the alarm protection device of the electric suction apparatus, the liquid level of the waste liquid is detected by using the capacitance change of the waste liquid. When the waste liquid reaches the set position, the detection electrode detects the increase of the capacitor, the first end of the first integrated circuit outputs low level, the second end of the second integrated circuit inputs low level, the third end of the second integrated circuit outputs high level, the buzzer is electrified to sound and alarm, and the triode obtains base current and is in saturation conduction to drive the relay to disconnect the negative-pressure motor power supply.
Preferably, the relay coil is connected in parallel with a diode, and the cathode of the diode is externally connected with a 5V direct-current voltage power supply, wherein the diode plays a reverse spike voltage protection function and can prevent the reverse spike voltage from breaking down the coil in the switching process of the relay coil.
Preferably, the normally closed contact of the relay is electrically connected with a negative-pressure motor power supply, and the normally open contact of the relay is electrically connected with a waste liquid discharge motor power supply.
Preferably, the triode is 8050.
Preferably, the model of the relay is an SRD-05 VDC-SL-C model.
The utility model has the advantages that: among this electric aspirator's alarm protection device, the response electrode pastes in bottle side suitable position, utilizes the electric capacity change of waste liquid to survey the liquid level of waste liquid, can prevent with in the bottle liquid direct contact, causes the unnecessary pollution, has improved the device's practicality.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic circuit diagram of the present invention.
In the figure: u1. first integrated circuit, U2. second integrated circuit, D1 diode, C1 first capacitor, C2. second capacitor, C3. third capacitor, C4 fourth capacitor, C5. fifth capacitor, C6. sixth capacitor, R1 first resistor, R2 second resistor, R3 third resistor, R4 fourth resistor, Q1. triode, K1. relay, SP1 buzzer, M electrode.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, an alarm protection device for an electric suction apparatus includes a first integrated circuit U1, a second integrated circuit U2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a triode Q1, a relay K1, a buzzer SP1 and an electrode M, wherein the first integrated circuit U1 is of a type TTP223, the second integrated circuit U2 is of a type LM555, a fifth terminal of the first integrated circuit U1 is grounded through a first capacitor C1 and a second capacitor C2 respectively, a fourth terminal of the first integrated circuit U1 is connected to the fifth terminal of the first integrated circuit U1, a third terminal of the first integrated circuit U1 is connected to the ground through a first resistor R365, a fourth terminal of the first integrated circuit U1 is electrically connected to the fourth terminal of the first integrated circuit U1 through a third capacitor V365, and the fourth terminal of the integrated circuit M1 is electrically connected to the fourth terminal of the integrated circuit 1, the second end of the first integrated circuit U1 is grounded, the first end of the first integrated circuit U1 is connected with the second end of the second integrated circuit U2, the second end of the second integrated circuit U2 is externally connected with a 5V direct current voltage power supply through a second resistor R2, the fourth end and the eighth end of the second integrated circuit U2 are externally connected with a 5V direct current voltage power supply, the first end of the second integrated circuit U2 is grounded through a fifth capacitor C5, the ground terminal of the second integrated circuit U2 is grounded, the sixth end of the second integrated circuit U2 is connected with the seventh end, the sixth end of the second integrated circuit U2 is grounded through a sixth capacitor C6, the sixth end of the second integrated circuit U2 is externally connected with a 5V direct current voltage power supply through a third resistor R3, the third end of the second integrated circuit U2 is grounded through a buzzer SP1, the third end of the second integrated circuit U2 is connected with the base of a transistor Q1 through a fourth resistor R4, and the emitter of a transistor Q1 is grounded, and a collector M of the triode Q1 is externally connected with a 5V direct-current voltage power supply through a coil of the relay K1.
In the alarm protection device of the electric suction apparatus, the liquid level of the waste liquid is detected by using the capacitance change of the waste liquid. When the waste liquid reaches the set position, the detection electrode M detects the increase of the capacitance, the first end of the first integrated circuit U1 outputs a low level, the second end of the second integrated circuit U2 inputs a low level, the third end of the second integrated circuit U2 outputs a high level, the buzzer SP1 is electrified and sounds to give an alarm, the triode Q1 obtains base current, and the drive relay K1 is switched on in a saturated mode to disconnect the power supply of the negative-pressure motor.
The first integrated circuit U1 is a piece of capacitive touch switch integrated circuit, model number TTP 223. The fourth terminal of the first integrated circuit U1 is connected to the fifth terminal of the power pin of the first integrated circuit U1, so that the first integrated circuit U1 outputs a high level at ordinary times and outputs a low level after being triggered.
The sensing electrode M is attached to a proper position on the side of the bottle, when liquid in the waste liquid bottle reaches the position of the sensing electrode M, the first integrated circuit U1 is triggered, the first end outputs low level, the second integrated circuit U2 is a commonly-used LM555 time-base circuit, and the third end outputs high level when the second end inputs low level. Normally, the first integrated circuit U1 outputs high level, so the third terminal of the second integrated circuit U2 outputs low level, when the second terminal of the second integrated circuit U2 inputs low level, the third terminal outputs high level, and drives the active buzzer SP1 to sound alarm! The active buzzer SP1 selects an operating voltage of 5V. Meanwhile, the third end outputs high level to provide base current for the triode Q1 to enable the triode Q1 to be in saturated conduction, the coil of the relay K1 is electrified, attracts, opens the normally closed contact to enable the negative-pressure motor to be powered off, and in addition, the coil of the relay K1 attracts, normally open contacts of the relay K1 to be closed, connects the liquid drainage motor to suck waste liquid into the disposable waste liquid bag to relieve the waste liquid bottle. When the liquid level of the waste liquid in the waste liquid bottle descends along with the discharged liquid, at the moment, the first integrated circuit U1 outputs a high level, the second integrated circuit U2 outputs a low level at the third end after time delay (the delay time is 0.7R2C 5), the active buzzer SP1 stops working, the triode Q1 loses base current and is cut off, the relay K1 loses power, the normally closed contact is closed to be connected with a negative-pressure motor power supply, the normally open contact is opened at the same time, the waste liquid discharging motor power supply is cut off, and the conventional state is recovered at the moment.
In this example: the coil of the relay K1 is connected in parallel with a diode D1, the cathode of the diode D1 is externally connected with a 5V direct-current voltage power supply, and here, the diode D1 plays a role in reverse spike voltage protection and can prevent reverse spike voltage generated in the process of switching on and off the coil of the relay K1 from breaking down the coil.
In this example: the normally closed contact of the relay K1 is electrically connected with a negative-pressure motor power supply, the normally open contact of the relay K1 is electrically connected with a waste liquid discharge motor power supply, the model of the triode Q1 is 8050, and the model of the relay K1 is SRD-05 VDC-SL-C.
In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides an alarm protection device of electric suction apparatus which characterized in that: the circuit comprises a first integrated circuit, a second integrated circuit, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a triode, a relay, a buzzer and an electrode, wherein the model of the first integrated circuit is TTP223, the model of the second integrated circuit is LM555, the fifth end of the first integrated circuit is grounded through the first capacitor and the second capacitor respectively, the fourth end of the first integrated circuit is connected with the fifth end of the first integrated circuit, the fourth end of the first integrated circuit is externally connected with a 5V direct current voltage power supply through the first resistor, the third end of the first integrated circuit is electrically connected with the electrode and grounded through the fourth capacitor, the second end of the first integrated circuit is grounded, the first end of the first integrated circuit is connected with the second end of the second integrated circuit, the second end of the second integrated circuit is externally connected with a 5V direct current voltage power supply through the second resistor, the fourth end and the eighth end of the second integrated circuit are both externally connected with a 5V direct-current voltage power supply, the first end of the second integrated circuit is grounded through a fifth capacitor, the grounding end of the second integrated circuit is grounded, the sixth end of the second integrated circuit is connected with the seventh end, the sixth end of the second integrated circuit is grounded through a sixth capacitor, the sixth end of the second integrated circuit is externally connected with a 5V direct-current voltage power supply through a third resistor, the third end of the second integrated circuit is grounded through a buzzer, the third end of the second integrated circuit is connected with the base electrode of the triode through a fourth resistor, the emitting electrode of the triode is grounded, and the collecting electrode of the triode passes through the coil of the relay and is externally connected with a 5V direct-current voltage power supply.
2. The alarm protection device of an electric aspirator according to claim 1, characterized in that: the relay coil is connected in parallel with a diode, and the cathode of the diode is externally connected with a 5V direct-current voltage power supply.
3. The alarm protection device of an electric aspirator according to claim 1, characterized in that: and the normally closed contact of the relay is electrically connected with a negative-pressure motor power supply, and the normally open contact of the relay is electrically connected with a waste liquid discharge motor power supply.
4. The alarm protection device of an electric aspirator according to claim 1, characterized in that: the model of the triode is 8050.
5. The alarm protection device of an electric aspirator according to claim 1, characterized in that: the model of the relay is SRD-05 VDC-SL-C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021100790.8U CN211956697U (en) | 2020-06-15 | 2020-06-15 | Alarm protection device of electric suction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021100790.8U CN211956697U (en) | 2020-06-15 | 2020-06-15 | Alarm protection device of electric suction apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211956697U true CN211956697U (en) | 2020-11-17 |
Family
ID=73159314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021100790.8U Expired - Fee Related CN211956697U (en) | 2020-06-15 | 2020-06-15 | Alarm protection device of electric suction apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211956697U (en) |
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2020
- 2020-06-15 CN CN202021100790.8U patent/CN211956697U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201117 Termination date: 20210615 |