CN218166924U - Automatic liquid feeding proportioning device of liquid medicine - Google Patents
Automatic liquid feeding proportioning device of liquid medicine Download PDFInfo
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- CN218166924U CN218166924U CN202222293274.7U CN202222293274U CN218166924U CN 218166924 U CN218166924 U CN 218166924U CN 202222293274 U CN202222293274 U CN 202222293274U CN 218166924 U CN218166924 U CN 218166924U
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Abstract
The utility model discloses an automatic liquid adding and proportioning device for liquid medicine, which comprises a control module, a floating ball switch group and a liquid supply output device, wherein the floating ball switch group and the liquid supply output device are respectively connected with the control module; the float switch group is arranged on the inner side wall of the liquid medicine cylinder and is used for detecting switch signals of different water level positions; the float switch group comprises a liquid starting float switch arranged at the bottom of the liquid medicine cylinder, a stopping float switch arranged at the upper part of the liquid medicine cylinder and at least one liquid changing float switch arranged between the liquid starting float switch and the stopping float switch, and the liquid changing float switches are arranged at intervals along the height direction; the liquid supply output device is used for connecting at least two liquid supply devices and outputting liquid in the liquid supply devices to the liquid medicine cylinder; the control module is used for controlling the working state of the liquid supply output device according to the switch signal of the floating ball switch group. The utility model discloses can realize automatic liquid feeding ratio function, can improve the accuracy of liquid feeding proportioning efficiency and ratio proportion, be difficult for causing the waste of liquid medicine, the ratio proportion is adjustable moreover.
Description
Technical Field
The utility model relates to a liquid feeding ratio technical field of liquid medicine especially relates to an automatic liquid feeding proportioning device of liquid medicine.
Background
At present, water treatment technology is generally used in various fields of industry, civil use and the like, and liquid medicine adding equipment is arranged in the technology to play a role in improving the water treatment effect or protecting a water treatment membrane set.
However, the required liquid medicine of the current liquid medicine adding equipment needs to be checked regularly by personnel. When the liquid medicine needs to be supplemented, a plurality of liquid medicines with a certain proportion need to be manually prepared and poured into the liquid medicine cylinder, and then the liquid medicines are uniformly mixed by the liquid medicine circulating system. However, the matching proportion of the manually prepared liquid medicine is poor in consistency, waste of the liquid medicine is easily caused, and manual matching efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an automatic liquid feeding proportioning device of liquid medicine is provided, can realize automatic liquid feeding ratio function, can improve the accuracy of liquid feeding proportioning efficiency and ratio proportion, is difficult for causing the waste of liquid medicine, and the ratio proportion is adjustable moreover.
In order to solve the technical problem, the utility model provides an automatic liquid adding and proportioning device for liquid medicine, which comprises a control module, a floating ball switch group and a liquid supply output device, wherein the floating ball switch group and the liquid supply output device are respectively connected with the control module; the float switch group is arranged on the inner side wall of the liquid medicine cylinder and is used for detecting switch signals of different water level positions; the float switch group comprises a liquid starting float switch arranged at the bottom of the liquid medicine cylinder, a stopping float switch arranged at the upper part of the liquid medicine cylinder and at least one liquid changing float switch arranged between the liquid starting float switch and the stopping float switch, and the liquid changing float switches are arranged at intervals along the height direction; the liquid supply output device is used for connecting at least two liquid supply devices and outputting liquid in the liquid supply devices to the liquid medicine cylinder; the control module is used for controlling the working state of the liquid supply output device according to the switch signal of the floating ball switch group.
As the improvement of the proposal, a liquid changing float switch is arranged between the liquid starting float switch and the liquid stopping float switch; the liquid supply output device is respectively connected with the first liquid supply device and the second liquid supply device and is used for outputting liquid in the first liquid supply device and the second liquid supply device to the liquid medicine cylinder.
As an improvement of the above scheme, the liquid supply output device comprises a first output channel communicated with the first liquid supply device and the liquid medicine cylinder respectively, a second output channel communicated with the second liquid supply device and the liquid medicine cylinder respectively, a first direct-connection solenoid valve arranged in the first output channel and a second direct-connection solenoid valve arranged in the second output channel; the first straight-through electromagnetic valve and the second straight-through electromagnetic valve are both connected with the control module, the first straight-through electromagnetic valve is used for conducting or closing the first output channel, and the second straight-through electromagnetic valve is used for conducting or closing the second output channel.
As an improvement of the above scheme, the control module comprises a self-locking circuit and a switching output circuit connected with the self-locking circuit, and the input end of the self-locking circuit is connected with the switching power supply; the stop floating ball switch is used for disconnecting a loop of the self-locking circuit; the liquid starting floating ball switch is used for starting the self-locking circuit, so that the output end of the self-locking circuit provides voltage for the switching output circuit and controls the working state of the first direct-current electromagnetic valve through the switching output circuit; the liquid changing float switch is used for respectively controlling the working states of the second straight-through electromagnetic valve and the first straight-through electromagnetic valve by switching the output circuit.
As an improvement of the scheme, the self-locking circuit comprises a start-stop intermediate relay, a stop float switch and a liquid-start float switch, one end of the stop float switch is connected with the switching power supply, and the other end of the stop float switch is respectively connected with a first normally open contact of the start-stop intermediate relay and one end of a coil of the start-stop intermediate relay through the liquid-start float switch; a first common terminal of the start-stop intermediate relay is connected with one end of a coil of the start-stop intermediate relay, and a second common terminal of the start-stop intermediate relay is connected with a switching power supply; and a second normally open contact of the start-stop intermediate relay is connected with the switching output circuit and used for providing voltage for the switching output circuit and controlling the working state of the first direct-current electromagnetic valve through the switching output circuit.
As an improvement of the scheme, the switching output circuit comprises a liquid changing floating ball switch, a liquid changing intermediate relay and a liquid starting intermediate relay, wherein a second normally open contact of the liquid starting intermediate relay is respectively connected with a third common terminal of the liquid changing intermediate relay and one end of a coil of the liquid changing intermediate relay through the liquid changing floating ball switch; the normally open contact in the same group with the third common terminal is connected with the second straight-through electromagnetic valve, and the normally closed contact in the same group with the third common terminal is connected with one end of a coil of the liquid starting intermediate relay; one end of a coil of the liquid starting intermediate relay is connected with a fourth common terminal of the liquid starting intermediate relay, and a normally open contact which is in the same group with the fourth common terminal is connected with the first direct-current electromagnetic valve.
As an improvement of the scheme, the output end of the second straight-through electromagnetic valve is provided with a pneumatic pump.
As the improvement of the scheme, the stop float switch and the liquid starting float switch are both normally closed float switches, and the liquid changing float switch is a normally open float switch.
As an improvement of the scheme, the first liquid supply device is a softened water liquid supply device or an RO water liquid supply device.
As an improvement of the scheme, the second liquid supply device is a stock solution supply device.
Implement the utility model discloses, following beneficial effect has:
the utility model discloses an automatic liquid medicine adding proportioning device of liquid medicine can detect the switching signal of different water level positions through the float switch group, and control module can drive the liquid supply output device to export different liquid to the liquid medicine jar according to the switching signal of liquid starting float switch and liquid changing float switch to realize the automatic liquid adding function; the control module also controls the liquid supply output device to stop working according to the switch signal of the stop floating ball switch so as to realize the automatic liquid stop function.
In addition, the proportion of the mixed liquid medicine can be obtained according to the height difference between every two adjacent float switches. When the liquid medicine needs to be supplemented, the automatic liquid adding and proportioning function can be realized by the mode, the liquid adding and proportioning efficiency and the accuracy of the proportioning proportion are improved, and the waste of the liquid medicine is not easily caused; the proportioning proportion can be adjusted by adjusting the height position of the liquid changing floating ball switch so as to realize the adjustability of the proportioning proportion; the required mixed liquid is formed after the multiple liquid in the liquid medicine jar is stirred to can satisfy the application scene of the different ratio proportion demands of mixed liquid medicine, the practicality is high.
Drawings
Fig. 1 is a schematic structural view of a first embodiment of the automatic liquid adding and proportioning device for liquid medicine of the present invention;
FIG. 2 is a schematic structural diagram of the system of the first embodiment of the automatic liquid adding and proportioning device of the present invention;
FIG. 3 is a schematic structural view of a second embodiment of the automatic liquid adding and proportioning device of the utility model;
FIG. 4 is a schematic view of the system structure of a second embodiment of the automatic liquid adding and proportioning device of the utility model;
fig. 5 is a circuit diagram of a control module according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-2, fig. 1-2 illustrate a first embodiment of the automatic liquid adding proportioning device of the present invention, which comprises a control module 1, and a float switch group 2 and a liquid supply output device 3 respectively connected to the control module 1, wherein the float switch group 2 is disposed on the inner sidewall of a liquid cylinder 4 for detecting the switch signals of different water level positions; the float switch group 2 comprises a liquid starting float switch 21 arranged at the bottom of the liquid medicine tank 4, a stopping float switch 23 arranged at the upper part of the liquid medicine tank 4 and a liquid changing float switch 22 arranged between the liquid starting float switch 21 and the stopping float switch 23; the liquid supply output device 3 is used for connecting the two liquid supply devices 5 and outputting liquid in the liquid supply devices to the liquid medicine cylinder 4.
It should be noted that the float switch group 2 can detect the switch signals of different water level positions. When the liquid medicine cylinder 4 needs to be replenished with liquid medicine, the liquid starting floating ball switch 21 at the bottom of the liquid medicine cylinder 4 detects a first switch signal, and the control module 1 drives the liquid supply output device 3 to output first liquid into the liquid medicine cylinder 4 according to the first switch signal; when the water level reaches the detection position of the liquid change floating ball switch 22, the liquid change floating ball switch 22 detects a second switch signal, and the control module 1 drives the liquid supply output device 3 to output second liquid to the liquid medicine cylinder 4 according to the second switch signal of the liquid change floating ball switch 22 so as to realize the automatic liquid adding function; when the water level reaches the detection position of the stop float switch 23, the control module 1 drives the liquid supply output device 3 to stop working according to a third switch signal detected by the stop float switch 23, so that the function of automatically stopping liquid supply is realized.
In addition, the proportion of the mixed liquid medicine can be obtained according to the height difference between every two adjacent float switches 2, for example, the height difference between the liquid changing float switch 22 and the liquid stopping float switch 23 is H1, the height difference between the liquid changing float switch 22 and the liquid starting float switch 21 is H2, and the proportion of the mixed liquid medicine can be obtained according to the proportion of H1 and H2. By adopting the mode, the automatic liquid adding and proportioning function can be realized, the liquid adding and proportioning efficiency and the accuracy of the proportioning ratio are improved, and the waste of liquid medicine is not easy to cause; the proportioning proportion can be adjusted by adjusting the height position of the liquid changing float switch 22 so as to realize the adjustability of the proportioning proportion; the required mixed liquid is formed after the multiple liquid in the liquid medicine jar 4 is stirred to can satisfy the application scene of the different ratio proportion demands of mixed liquid medicine, the practicality is high.
As shown in fig. 3-4, fig. 3-4 are second embodiments of the automatic liquid adding proportioning device of the present invention, which are different from the first embodiment of fig. 1-2 in that the liquid supplying device 5 includes a first liquid supplying device 51 and a second liquid supplying device 52; the liquid supply output device 3 includes a first output passage 31 communicating with the first liquid supply device 51 and the liquid medicine cylinder 4, respectively, a second output passage 32 communicating with the second liquid supply device 52 and the liquid medicine cylinder 4, respectively, a first through solenoid valve 33 provided in the first output passage 31, and a second through solenoid valve 34 provided in the second output passage 32. The liquid supply output device 3 is respectively connected with a first liquid supply device 51 and a second liquid supply device 52, and the liquid supply output device 3 is used for outputting the liquid in the first liquid supply device 51 and the second liquid supply device 52 to the liquid medicine cylinder 4. A first direct solenoid valve 33 and a second direct solenoid valve 34 are connected to the control module 1, the first direct solenoid valve 33 being used to open or close the first output channel 31, and the second direct solenoid valve 34 being used to open or close the second output channel 32.
The control module 1 is configured to drive the first direct-current electromagnetic valve 33 to open according to a first switch signal of the liquid-starting float switch 21, so that the first output channel 31 outputs the first liquid in the first liquid supply device 51 to the liquid medicine tank 4; the control module 1 is further configured to drive the second direct-connection electromagnetic valve 34 to open and drive the first direct-connection electromagnetic valve 33 to close according to a second switching signal of the liquid changing float switch 22, so that the second output channel 32 outputs the second liquid in the second liquid supply device 52 to the liquid medicine tank 4, thereby implementing an automatic liquid adding function. The control module 1 is further configured to drive the entire liquid supply output device 3 to stop working according to a third switch signal of the stop float switch 23, so as to achieve an automatic liquid stop function. Through the automatic liquid feeding and stopping mode, the human error of manual liquid feeding can be avoided, the liquid feeding proportioning efficiency and the accuracy of the proportioning proportion are improved, and the waste of liquid medicine is not easily caused.
As shown in fig. 5, the control module 1 includes a self-locking circuit 11 and a switching output circuit 12 connected to the self-locking circuit 12, and an input terminal of the self-locking circuit 11 is connected to the switching power supply. The liquid starting float switch 21 is used for starting the self-locking circuit 11, so that the output end of the self-locking circuit 11 provides voltage for the switching output circuit 12 and controls the switching output circuit 12 to drive the first direct-current electromagnetic valve 33 to be opened, and the first liquid in the first liquid supply device 51 is output to the liquid medicine cylinder 4. The liquid changing float switch 22 is used for controlling the switching output circuit 12 to respectively drive the second straight-through electromagnetic valve 34 to open and the first straight-through electromagnetic valve 33 to close, so that the second liquid in the second liquid supply device 52 is output to the liquid medicine cylinder 4, thereby realizing the automatic liquid adding function. The stop float switch 23 is used for disconnecting the power supply circuit of the self-locking circuit 11, so that the switching output circuit 12, the first straight-through electromagnetic valve 33 and the second straight-through electromagnetic valve 34 stop working, and the automatic liquid stopping function is realized. Through the automatic liquid feeding and stopping mode, the human error of manual liquid feeding can be avoided, the liquid feeding proportioning efficiency and the accuracy of the proportioning proportion are improved, and the waste of liquid medicine is not easily caused.
As shown in fig. 5, the self-locking circuit 11 includes a start-stop intermediate relay KM1, a stop float switch 23 and a liquid-start float switch 21, one end of the stop float switch 23 is connected to the positive terminal of the switching power supply, and the other end of the stop float switch 23 is connected to the first normally open contact of the start-stop intermediate relay KM1 and one end of the coil of the start-stop intermediate relay KM1 via the liquid-start float switch 21, respectively; the first public terminal of the start-stop intermediate relay KM1 is connected with one end of a coil of the start-stop intermediate relay KM1, and the second public terminal of the start-stop intermediate relay KM1 is connected with the positive end of the switching power supply.
The switching output circuit 12 comprises a liquid changing float switch 22, a liquid changing intermediate relay KM2 and a liquid starting intermediate relay KM3, wherein a second normally open contact of the starting and stopping intermediate relay KM1 is respectively connected with a third common terminal of the liquid changing intermediate relay KM2 and is connected with one end of a coil of the liquid changing intermediate relay KM2 through the liquid changing float switch 22; the normally open contact in the same group with the third common terminal is connected with the second straight-through electromagnetic valve 34, and the normally closed contact in the same group with the third common terminal is connected with one end of the coil of the liquid-starting intermediate relay KM 3; one end of a coil of the liquid starting intermediate relay KM3 is connected with a fourth public terminal of the liquid starting intermediate relay KM3, and a normally open contact in the same group with the fourth public terminal is connected with the first direct-current electromagnetic valve 33. In addition, the stop float switch 23 and the liquid starting float switch 21 are both normally closed float switches 2, and the liquid changing float switch 22 is a normally open float switch 2; the other ends of the coils of the start-stop intermediate relay KM1, the liquid-changing intermediate relay KM2 and the liquid-starting intermediate relay KM3 are connected with the negative end of the switching power supply.
When the liquid medicine cylinder 4 needs to be supplemented with liquid medicine, namely the liquid starting floating ball switch 21 does not detect the corresponding water level, a first switch signal of the liquid starting floating ball switch 21 is a power supply loop for conducting a coil of the start-stop intermediate relay KM1, so that the start-stop intermediate relay KM1 is started, and voltage is provided for the coil of the liquid changing intermediate relay KM2 and the third common terminal; because the liquid changing intermediate relay KM2 is not started, the third common terminal and the normally closed contact in the same group and the coil of the liquid starting intermediate relay KM3 form a power supply loop, the liquid starting intermediate relay KM3 can be started to drive the first always-on electromagnetic valve 33 to be opened, and therefore the first liquid is output to the liquid medicine cylinder 4. In addition, because the start-stop intermediate relay KM1, the stop float switch 23 and the liquid starting float switch 21 form the self-locking circuit 11, when the liquid starting float switch 21 detects a corresponding water level and breaks a circuit, the uninterrupted power-on state can be kept, and the start-stop intermediate relay KM1 cannot be influenced to continuously provide voltage for the liquid changing intermediate relay KM 2.
When the water level rises to the detection position of the liquid changing floating ball switch 22, a second switch signal of the liquid changing floating ball switch 22 is a power supply loop for conducting a coil of the liquid changing intermediate relay KM2 so as to start the liquid changing intermediate relay KM2 and stop starting the liquid starting intermediate relay, so that the second straight-through electromagnetic valve 34 is driven to be opened and the first straight-through electromagnetic valve 33 is driven to be closed, the second liquid is switched and output to the liquid medicine cylinder 4, and the automatic liquid adding switching function can be realized. When the water level rises to the stop floating ball switch 23, the third switch signal of the stop floating ball switch 23 is to cut off the power supply loop of the self-locking circuit 11, so that the start and stop intermediate relay KM1 is stopped, the switching output circuit 12 stops working, and the automatic liquid stopping function is realized. Through the automatic liquid feeding and stopping mode, the human error of manual liquid feeding can be avoided, the liquid feeding proportioning efficiency and the accuracy of proportioning proportion are improved, and the waste of liquid medicine is not easily caused.
Preferably, the first liquid supply device 51 is a softened water supply device or an RO water supply device, and the second liquid supply device 52 is a stock solution supply device, and the softened water or the RO water and the stock solution are mixed according to a proportion to obtain the required cleaning solution, so as to meet the occasions with different water treatment requirements. When the first direct-current electromagnetic valve 33 is opened, the softened water supply device or the RO water supply device enables the first liquid to flow into the liquid medicine cylinder 4 through the first output channel 31 under the action of the water supply pressure of the first direct-current electromagnetic valve or the RO water supply device. Wherein, as shown in fig. 3, the output end of the second through electromagnetic valve 34 is provided with the pneumatic pump 7. When the second straight-through electromagnetic valve 34 is opened, the pneumatic pump 7 can automatically operate due to the pressure difference, so as to pump the second liquid into the liquid medicine tank 4 through the second output passage 32, and ensure that the second liquid under the action of no water supply pressure can stably flow into the liquid medicine tank 4, so as to improve the liquid output stability.
Preferably, in other embodiments, a plurality of liquid-changing float switches 22 and corresponding liquid-changing intermediate relays KM2, output pipes and through electromagnetic valves can be added. The height positions of the liquid changing floating ball switches are different; the normally closed contact of the previous liquid-changing intermediate relay KM2 in the two adjacent liquid-changing intermediate relays KM2 is connected to the third common terminal of the next liquid-changing intermediate relay KM2 and to one end of the coil of the next liquid-changing intermediate relay KM2 via the liquid-changing float switch 22. Through the ratio proportion that the corresponding drawing mixes the liquid medicine according to the difference in height between every two adjacent float switches 2, can satisfy the occasion of the automatic liquid feeding ratio of multiple liquid medicine, simultaneously through adjusting a plurality of height position of trading liquid float switch 22, can satisfy the occasion of the different ratio proportion demands of mixing the liquid medicine, improve the device practicality.
It should be noted that the control module 1 of this embodiment implements the above-mentioned automatic liquid adding proportioning function through a pure hardware logic judgment circuit. In other embodiments, the control module 1 may include a control chip having a logic determination function, and the control chip drives the corresponding through electromagnetic valve to operate according to the float switch group, so as to implement the above-mentioned automatic liquid adding proportioning function.
In addition, in other embodiments, the pneumatic pump 7 may be replaced by an electric liquid pump, and the normally open contact of the liquid-changing intermediate relay KM2 is connected to the second through electromagnetic valve 34 and the electric liquid pump, respectively, so that when the liquid-changing intermediate relay KM2 is started to operate, the second through electromagnetic valve 34 and the electric liquid pump may be driven to operate at the same time, so as to stably output the second liquid to the liquid medicine tank 4.
In summary, the embodiment can realize the automatic liquid adding proportioning function, improve the liquid adding proportioning efficiency and the accuracy of the proportioning proportion, and avoid the waste of the liquid medicine; the proportioning proportion can be adjusted by adjusting the height position of the liquid changing float switch 22 so as to realize the adjustability of the proportioning proportion, the application scenes of different proportioning proportion requirements of different mixed liquid medicines can be met, and the practicability is high.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. An automatic liquid adding and proportioning device for liquid medicine is characterized by comprising a control module, a floating ball switch group and a liquid supply output device, wherein the floating ball switch group and the liquid supply output device are respectively connected with the control module; the float switch group is arranged on the inner side wall of the liquid medicine tank and is used for detecting switch signals of different water level positions;
the float switch group comprises a liquid starting float switch arranged at the bottom of the liquid medicine cylinder, a stopping float switch arranged at the upper part of the liquid medicine cylinder and at least one liquid changing float switch arranged between the liquid starting float switch and the stopping float switch, and the liquid changing float switches are arranged at intervals along the height direction;
the liquid supply output device is used for connecting at least two liquid supply devices and outputting liquid in the liquid supply devices to the liquid medicine cylinder;
the control module is used for controlling the working state of the liquid supply output device according to the switch signal of the floating ball switch group.
2. The automatic liquid medicine adding and proportioning device of claim 1, wherein a liquid change float switch is arranged between the liquid starting float switch and the liquid stopping float switch;
the liquid supply output device is respectively connected with the first liquid supply device and the second liquid supply device and is used for outputting liquid in the first liquid supply device and the second liquid supply device to the liquid medicine cylinder.
3. The automatic liquid medicine adding and proportioning device of claim 2, wherein the liquid supply output device comprises a first output channel respectively communicating with the first liquid supply device and the liquid medicine cylinder, a second output channel respectively communicating with the second liquid supply device and the liquid medicine cylinder, a first direct-connection solenoid valve disposed in the first output channel, and a second direct-connection solenoid valve disposed in the second output channel;
the first straight-through electromagnetic valve and the second straight-through electromagnetic valve are both connected with the control module, the first straight-through electromagnetic valve is used for conducting or closing the first output channel, and the second straight-through electromagnetic valve is used for conducting or closing the second output channel.
4. The automatic liquid medicine adding and proportioning device of claim 3, wherein the control module comprises a self-locking circuit and a switching output circuit connected with the self-locking circuit, and an input end of the self-locking circuit is connected with a switching power supply;
the stop floating ball switch is used for disconnecting a loop of the self-locking circuit; the liquid starting floating ball switch is used for starting the self-locking circuit, so that the output end of the self-locking circuit provides voltage for the switching output circuit and controls the working state of the first direct-current electromagnetic valve through the switching output circuit;
and the liquid changing floating ball switch respectively controls the working states of the second direct-connection electromagnetic valve and the first direct-connection electromagnetic valve through the switching output circuit.
5. The automatic liquid medicine adding and proportioning device of claim 4, wherein the self-locking circuit comprises a start-stop intermediate relay, the stop float switch and the liquid-start float switch, one end of the stop float switch is connected with a switching power supply, and the other end of the stop float switch is respectively connected with a first normally open contact of the start-stop intermediate relay and one end of a coil of the start-stop intermediate relay through the liquid-start float switch;
a first common terminal of the start-stop intermediate relay is connected with one end of a coil of the start-stop intermediate relay, and a second common terminal of the start-stop intermediate relay is connected with the switching power supply; and the second normally open contact of the start-stop intermediate relay is connected with the switching output circuit and used for providing voltage for the switching output circuit and controlling the working state of the first direct-current electromagnetic valve through the switching output circuit.
6. The automatic liquid medicine adding and proportioning device of claim 5, wherein the switching output circuit comprises the liquid changing float switch, a liquid changing intermediate relay and a liquid starting intermediate relay, and a second normally open contact of the start-stop intermediate relay is respectively connected with a third common terminal of the liquid changing intermediate relay and one end of a coil of the liquid changing intermediate relay through the liquid changing float switch;
the normally open contact in the same group with the third common terminal is connected with the second straight-through electromagnetic valve, and the normally closed contact in the same group with the third common terminal is connected with one end of a coil of the liquid-opening intermediate relay;
one end of a coil of the liquid starting intermediate relay is connected with a fourth common terminal of the liquid starting intermediate relay, and a normally open contact in the same group with the fourth common terminal is connected with the first direct-current electromagnetic valve.
7. The automatic liquid medicine adding and proportioning device of claim 3, wherein the output end of the second straight-through solenoid valve is provided with a pneumatic pump.
8. The automatic liquid adding and proportioning device of liquid medicine according to claim 4, 5 or 6, wherein the stop float switch and the liquid start float switch are both normally closed float switches, and the liquid change float switch is a normally open float switch.
9. The automatic liquid medicine adding and proportioning device of claim 2 or 3, wherein the first liquid supply device is a softened water supply device or an RO water supply device.
10. The automatic liquid medicine adding and proportioning device of claim 2 or 3, wherein the second liquid supply device is a stock solution supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222293274.7U CN218166924U (en) | 2022-08-29 | 2022-08-29 | Automatic liquid feeding proportioning device of liquid medicine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222293274.7U CN218166924U (en) | 2022-08-29 | 2022-08-29 | Automatic liquid feeding proportioning device of liquid medicine |
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| CN218166924U true CN218166924U (en) | 2022-12-30 |
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| CN202222293274.7U Active CN218166924U (en) | 2022-08-29 | 2022-08-29 | Automatic liquid feeding proportioning device of liquid medicine |
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