CN220789947U - Reclaimed water pump constant-pressure water supply system based on frequency converter - Google Patents
Reclaimed water pump constant-pressure water supply system based on frequency converter Download PDFInfo
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- CN220789947U CN220789947U CN202322534708.2U CN202322534708U CN220789947U CN 220789947 U CN220789947 U CN 220789947U CN 202322534708 U CN202322534708 U CN 202322534708U CN 220789947 U CN220789947 U CN 220789947U
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- frequency converter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 234
- 238000003860 storage Methods 0.000 claims description 13
- 238000010924 continuous production Methods 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of intelligent control and electric automation, and discloses a reclaimed water pump constant-pressure water supply system based on a frequency converter, which comprises a controller and a plurality of water supply passages, wherein each water supply passage comprises two reclaimed water pumps which are connected in parallel, and the water outlet end of each water supply passage is provided with a pressure gauge; the two parallel middle water pumps are electrically connected with the same frequency converter, and the pressure gauge and the frequency converter are electrically connected with the controller. By adopting the arrangement, the motor frequency of the centering water pump is conveniently adjusted by the controller through the frequency converter according to the pressure signal fed back by the pressure gauge, and constant-pressure water supply is realized. According to the scheme, the two middle water pumps are connected in parallel, when the water pump still cannot meet the water pressure requirement under high power operation during water use peak, the standby middle water pump can be started, water flow is increased, and constant-pressure water supply in a factory is realized. The water pump can be protected from limiting operation, constant pressure water supply in a factory can be realized at a water use peak, and continuous production is realized.
Description
Technical Field
The utility model relates to the technical field of intelligent control technology and electric automation, in particular to a reclaimed water pump constant-pressure water supply system based on a frequency converter.
Background
Besides direct discharge, the sewage reaching the standard can be pumped into the part of the field with low requirement on water quality in the factory by a middle water pump, such as factory greening water, desliming machine filter cloth cleaning and the like, so as to realize the recycling of sewage.
At present, more factories are still connected into a reclaimed water supply passage by a reclaimed water pump, a valve and a pressure gauge, the size of the reclaimed water outlet valve is firstly adjusted, then the values of current and the pressure gauge are observed, and the valve size is reversely adjusted until the value of the pressure gauge reaches the water pressure of the passage in the factories. However, this method has the following technical problems: (1) The operation steps are complex, the valve needs to be adjusted for multiple times according to the values of the current and the pressure gauge, so that the requirement can be met, and time and labor are wasted; (2) The pressure of reclaimed water (i.e. standard reaching sewage) is constant under the conventional state, but the pressure is reduced during the water use peak period, so that on one hand, the water use requirement cannot be met, and on the other hand, if the frequency of the reclaimed water pump under the conventional state is used at the moment, the current of the reclaimed water pump is increased, so that the service life of the reclaimed water pump is influenced, and the production cost is increased.
Disclosure of Invention
The utility model aims to provide a reclaimed water pump constant-pressure water supply system based on a frequency converter, which solves the technical problem that the water pressure is difficult to maintain constant pressure in the water use peak period and cannot meet the water use requirement in the existing sewage recycling passage.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the constant-pressure water supply system of the reclaimed water pump based on the frequency converter comprises a controller and a plurality of water supply channels, wherein the water supply channels comprise two reclaimed water pumps which are connected in parallel, and the water outlet ends of the water supply channels are provided with pressure gauges; the two parallel middle water pumps are electrically connected with the same frequency converter, and the pressure gauge and the frequency converter are electrically connected with the controller.
The principle and the advantages of the scheme are as follows:
1. the scheme is convenient for supply water for a plurality of water-requiring places by arranging the controller and a plurality of water supply channels, such as greening water in a factory, filter cloth cleaning water of a desliming machine, water for solution blending of medicines in a sewage plant and the like, realizes multi-channel recycling of sewage reaching standards (also called reclaimed water), reduces the consumption of tap water and saves water resources.
2. Compared with the prior art, the water pressure adjusting process is complex, the constant-pressure water supply device is characterized in that the controller, the frequency converter, the middle water pump and the pressure gauge are electrically connected, the motor frequency of the middle water pump is conveniently adjusted by the frequency converter according to the pressure signal fed back by the pressure gauge, so that the water pressure is quickly adjusted to meet the water demand, and the motor frequency of the middle water pump is adjusted in real time according to the signal fed back by the pressure gauge, so that constant-pressure water supply is realized.
3. Compared with the prior art, when the constant pressure water supply can not be realized during water use peak and equipment is still easy to damage, the scheme is characterized in that the two parallel middle water pumps are used, when the water pressure requirement can not be met when one middle water pump runs at a high power during water use peak, the standby middle water pump can be started, the water flow is increased, and therefore the constant pressure water supply in a factory is realized. The water pump can be protected from limiting operation, constant pressure water supply in a factory can be realized at a water use peak, and continuous production is realized.
Preferably, the water supply channel is provided with a water inlet valve and a water outlet valve respectively on the front pipeline and the rear pipeline of the middle water pump, and the water inlet valve and the water outlet valve are electrically connected with the controller.
The beneficial effects are that: by adopting the arrangement, the scheme is convenient for protecting the centering water pump and is convenient for overhaul. Specifically, valves are arranged in front of and behind the reclaimed water pump, so that reclaimed water can not run off when the reclaimed water pump is overhauled on the one hand; on the other hand, the water inflow and the water outflow of the middle water pump are convenient to adjust, and the damage to the middle water pump caused by the fact that the water inflow of the middle water pump exceeds the power of the middle water pump in some cases is prevented.
Preferably, the water inlet ends of the water supply channels are all connected with the same temporary storage pool, the temporary storage pool is communicated with a water outlet pool, a water inlet pipe is arranged at one end of the water outlet pool, and an overflow plate is arranged at the other end of the water outlet pool.
The beneficial effects are that: by adopting the arrangement, the temporary storage pool is convenient for the recycling of the water supply passage due to enough reclaimed water in the temporary storage pool. Specifically, the sewage (i.e. reclaimed water) reaching the standard is treated and enters the water outlet tank from the water inlet pipe, the temporary storage tank is communicated with the water outlet tank so that the water levels of the sewage and the temporary storage tank are flush, and the overflow plate is arranged to be helpful for ensuring that the water outlet tank and the temporary storage tank have enough reclaimed water, so that the sufficient supply of partial water in a factory is ensured, and the redundant sewage can be discharged in time.
Preferably, the number of the water supply passages is three.
The beneficial effects are that: by adopting the arrangement, the scheme is convenient for supplying water for three factories with constant pressure. Specifically, the water outlets of the three water supply channels in the scheme are respectively communicated with greening water in a factory, filter cloth cleaning water of a desliming machine and solution water blended by medicines of a sewage plant, so that water can be conveniently supplied to the three water supply channels simultaneously.
Drawings
Fig. 1 is a schematic diagram of an apparatus structure of a constant-pressure water supply system of a reclaimed water pump based on a frequency converter in embodiment 1 of the present utility model.
Fig. 2 is a schematic diagram of a circuit control structure of a water supply passage in embodiment 1 of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the device comprises a PLC (programmable logic controller) 1, a water supply passage 2, a frequency converter 21, a reclaimed water pump 22, a pressure gauge 23, a water inlet valve 24, a water outlet valve 25, a temporary storage tank 3, a water outlet tank 4, a water inlet pipe 41 and an overflow plate 42.
Example 1
This embodiment is basically as shown in fig. 1 and 2: the utility model provides a reclaimed water pump constant pressure water supply system based on converter, includes controller 1 and a plurality of water supply passageway 2, and the quantity of water supply passageway 2 is three in this embodiment specifically, as a reference, and the water outlet end of three water supply passageway 2 communicates respectively and uses water, desliming machine filter cloth cleaning water and sewage plant medicine blending solution water for greening in the factory.
Each water supply passage 2 comprises two reclaimed water pumps 22 which are connected in parallel, a water inlet valve 24 and a water outlet valve 25 are respectively arranged on the front pipeline and the rear pipeline of each reclaimed water pump 22 in the water supply passage 2, and the water inlet valve 24 and the water outlet valve 25 are electrically connected with the controller 1; the two parallel reclaimed water pumps 22 are electrically connected with the same frequency converter 21, the water outlet end of the water supply passage 2 is provided with a pressure gauge 23, and the pressure gauge 23 and the frequency converter 21 are electrically connected with the controller 1.
The water inlet ends of the three water supply passages 2 are connected with the same temporary storage pool 3, the temporary storage pool 3 is communicated with a water outlet pool 4, one end of the water outlet pool 4 is provided with a water inlet pipe 41, and the other end is provided with an overflow plate 42.
In the scheme, the controller 1 is a PLC controller 1, the PLC controller 1 and the frequency converter 21 are of the prior art, and the model can be selected according to actual needs.
The specific implementation mode is as follows:
first, the devices are connected in a circuit-safe manner, and the water supply pressure (i.e., the water pressure threshold) and the control manner of each water supply passage 2 are preset into the PLC controller 1.
Then, when reclaimed water is needed to be recycled in the factory, taking greening water as an example, the controller 1 firstly controls the water pump 22 in one water supply channel 2 connected with the greening water in the factory, and the front water inlet valve 24 and the rear water inlet valve 25 and the water outlet valve 25 of the water supply channel 2 to start, so that the reclaimed water in the temporary storage pool 3 is conveniently pumped to the greening water along the water supply channel 2. In the process, the pressure gauge 23 detects the water pressure in the water supply channel 2 to form a water pressure signal and transmits the water pressure signal to the PLC controller 1, and the PLC controller 1 adjusts the frequency of the motor of the middle water pump 22 according to the relation between the preset water pressure threshold value and the water pressure signal; if the water pressure signal is higher than the water pressure threshold, sending an adjusting signal to the frequency converter 21, and reducing the motor frequency of the middle water pump 22 by the frequency converter 21 until the water pressure is consistent with the water pressure threshold; if the water pressure signal is lower than the water pressure threshold, the adjusting signal is sent to the frequency converter 21, and the frequency converter 21 can raise the motor frequency of the middle water pump 22 and raise the water pressure until the water pressure is consistent with the water pressure threshold.
If the water consumption peak period is met, the upper frequency limit of the motor of the water pump 22 still cannot reach the water pressure threshold, at this time, the PLC controller 1 controls the standby water pump 22, the front water inlet valve 24 and the rear water inlet valve 25, and the water outlet valve 25 to start, and equally divides the current and simultaneously controls the motor frequencies of the two water pumps 22, so that the water pressure (water pressure signal) of the water supply passage 2 is consistent with the water pressure threshold. And after the water consumption peak is passed, the standby water pump 22, the front water inlet valve 24, the rear water inlet valve 24 and the water outlet valve 25 are closed, and the water is continuously pumped by using one water pump 22.
The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. Reclaimed water pump constant pressure water supply system based on converter, its characterized in that: the water supply system comprises a controller and a plurality of water supply channels, wherein each water supply channel comprises two middle water pumps which are connected in parallel, and a pressure gauge is arranged at the water outlet end of each water supply channel; the two parallel middle water pumps are electrically connected with the same frequency converter, and the pressure gauge and the frequency converter are electrically connected with the controller.
2. The constant pressure water supply system for a reclaimed water pump based on a frequency converter as claimed in claim 1, wherein: the front pipeline and the rear pipeline of the middle water pump in the water supply passage are respectively provided with a water inlet valve and a water outlet valve, and the water inlet valve and the water outlet valve are electrically connected with the controller.
3. The constant pressure water supply system of a reclaimed water pump based on a frequency converter as claimed in claim 2, wherein: the water inlet ends of the water supply channels are connected with the same temporary storage pool, the temporary storage pool is communicated with a water outlet pool, a water inlet pipe is arranged at one end of the water outlet pool, and an overflow plate is arranged at the other end of the water outlet pool.
4. A constant pressure water supply system for a reclaimed water pump based on a frequency converter as claimed in claim 3, wherein: the number of the water supply passages is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322534708.2U CN220789947U (en) | 2023-09-18 | 2023-09-18 | Reclaimed water pump constant-pressure water supply system based on frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322534708.2U CN220789947U (en) | 2023-09-18 | 2023-09-18 | Reclaimed water pump constant-pressure water supply system based on frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220789947U true CN220789947U (en) | 2024-04-16 |
Family
ID=90664800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322534708.2U Active CN220789947U (en) | 2023-09-18 | 2023-09-18 | Reclaimed water pump constant-pressure water supply system based on frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220789947U (en) |
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2023
- 2023-09-18 CN CN202322534708.2U patent/CN220789947U/en active Active
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