CN113209705A - Automatic filtering and pollution discharging device for screw unit - Google Patents
Automatic filtering and pollution discharging device for screw unit Download PDFInfo
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- CN113209705A CN113209705A CN202010862679.0A CN202010862679A CN113209705A CN 113209705 A CN113209705 A CN 113209705A CN 202010862679 A CN202010862679 A CN 202010862679A CN 113209705 A CN113209705 A CN 113209705A
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- valve
- sewage discharge
- blowdown
- pressure
- electric
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- 238000001914 filtration Methods 0.000 title claims abstract description 41
- 238000007599 discharging Methods 0.000 title description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000010865 sewage Substances 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 230000008859 change Effects 0.000 claims abstract description 3
- 238000011001 backwashing Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
- B01D37/046—Controlling the filtration by pressure measuring
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses an automatic blowdown device for a screw type water source heat pump unit and a use method, and relates to the technical field of water source heat pump heating. The blow-down mechanism comprises an electric valve and a blow-down pipeline, and the electric valve comprises an electric actuating mechanism and a valve; the pressure feedback control system comprises a pressure sensor and a signal control system; the electric valve is controlled by the pressure feedback system and the flow feedback control system, and the change signals of the pressure and the flow values captured by the pressure sensor are converted into control signals of the electric valve to control an electric actuating mechanism of the electric valve to drive the valve, so as to control the opening of the valve, namely the opening of a sewage discharge system, thereby achieving the purposes of automatic filtration and sewage discharge of the system and ensuring the stable and efficient operation of the system.
Description
Technical Field
The invention relates to the technical field of water source heat pump heating, in particular to an automatic filtering and sewage discharging system of a water source screw type heat pump unit.
Background
The water source heat pump is a technology for realizing the transfer of low-level heat energy to high-level heat energy by utilizing low-level heat energy resources formed by utilizing solar energy and geothermal energy absorbed in shallow water sources on the earth surface, such as underground water, rivers and lakes, and adopting a heat pump principle and inputting a small amount of high-level electric energy. Liquid refrigerant in the water source heat pump unit is evaporated into low-temperature and low-pressure gaseous refrigerant after absorbing low-grade heat energy of underground water or superficial water in the evaporator, and the gaseous refrigerant is compressed into high-temperature and high-pressure gaseous refrigerant by the compressor and then sent into the condenser. The high-temperature high-pressure gaseous refrigerant in the condenser transfers heat to circulating water (geothermal heat or heating radiating fins) of a building through heat exchange, releases heat to the building, condenses into liquid, returns to the evaporator again, and repeats the processes of heat absorption and heat exchange.
The water source heat pump is a stable and reliable cold and warm central air conditioning system which utilizes the earth surface or underground water source as cold and heat sources and performs energy conversion. Under the condition of energy saving and heat preservation of a building, the fixed internal temperature in winter is ensured to be more than 20 ℃. Actually, after the underground water passes through the heat pump unit, the heat is only exchanged, the water quality is not changed, and the underground water is refilled into the stratum or the surface water system again, so that the pollution of the original water source cannot be caused. Meanwhile, the heating saves boiler room systems such as coal burning and the like, has no combustion process, avoids smoke exhaust pollution, does not produce any waste residue, waste gas, soot and the like, and makes the environment cleaner and better. Therefore, the water source heat pump is a clean heating mode. There is a history of over 100 years in the united states, with a rate of increase of around 10% per year now. Compared with a heating system of a boiler and an air source heat pump, the water source heat pump has obvious advantages. The water source heat pump saves more than 2/3 electric energy than the electric boiler and more than 1/2 energy than the fuel boiler; because the heat exchange temperature of the water source heat pump is stable all year round, generally 10-25 ℃, the refrigeration and heating coefficients can reach 3.5-4.4. Compared with the air source heat pump, the air source heat pump has the advantages that the air source heat pump is about 40 percent higher, and the operation cost is 50 to 60 percent of that of the common central air conditioner. Therefore, in recent years, the water source heat pump air conditioning system has rapidly developed abroad, the water source heat pump market in China is becoming active, and the technology will become the most effective heating and cooling air conditioning technology in the 21 st century.
There are problems: the heat pump unit in the water source heat pump heating system occupies a key position, so that the operation of the water source heat pump heating system is directly influenced by the water source heat pump host. The heat source water of the water source heat pump system is various in types, including river and lake source water, reclaimed water, shallow water, underground water and the like, a water source directly enters an evaporator of the screw unit during heat supply, and due to the water quality problems of the underground water, the surface water and the reclaimed water, sundries such as sand grains, garbage and the like can enter the system, so that a filter is frequently blocked, and the normal and efficient operation of the unit is influenced.
Disclosure of Invention
The invention provides an automatic filtering and sewage discharging system of a water source screw type heat pump unit, which can filter sundries, particles and the like in a water source, protect the water source screw type heat pump unit, realize real-time automatic sewage discharging and cleaning according to the blocking condition of a filter, keep the water source heat pump unit in high-efficiency operation, greatly save the maintenance cost of the system and equipment and ensure the stable operation of the system.
In order to prevent impurities in a water source from blocking a pipeline, causing the operation fault of a heat supply system and influencing the heating demand of residents, the invention provides the following technical scheme: water source screw heat pump set automatic filtration drainage includes filtering mechanism (4), sewerage agencies (11), its characterized in that: the hot water filtering mechanism (4) is communicated with the filtering mechanism (4) through a hot water conveying pipeline (1) through a connecting flange (8), the filtering mechanism (4) comprises a diversion valve (3) and an electric driving device thereof, namely an electric actuator (6) and a sewage discharge pipeline (13), a filter screen cylinder (7) and pressure sensors (5 and 9), the electric actuator (6) is connected with the water flow diversion valve (3), the sewage discharge valve (11) is connected with the sewage discharge pipeline (13), and the electric actuator (10) is connected with the sewage discharge valve (11);
the blowdown mechanism (12) comprises a pressure sensor (5), a pressure sensor (9), a blowdown valve (11), an electric actuator (10) of the blowdown valve and a blowdown pipeline (13), and the electric actuator (10) is controlled to operate by an electric signal converted by the pressure difference value of the pressure sensor (5) and the pressure sensor so as to control the opening of the blowdown valve.
As a preferable technical scheme of the invention, the upstream pipeline of the filtering mechanism (4) is provided with a pressure transmitter (5), and the downstream pipeline is provided with a pressure sensor (9) for respectively monitoring the pressure change of the front end and the rear end of the filtering mechanism (4).
As a preferable technical scheme of the invention, the upstream incoming water of the filtering mechanism (4) is the incoming water of a water source (corresponding to an evaporator) or the return water of an end user corresponding to a condenser. Before heat source water or terminal return water enters the screw host, the heat source water or the terminal return water is filtered by the automatic filtering and pollution discharging system of the water source screw heat pump unit and then enters the water source heat pump unit.
Compared with the prior art, the invention provides an automatic filtering and sewage discharging system of a water source screw type heat pump unit, which has the following beneficial effects:
this water source screw heat pump set automatic filtration drainage, through setting up filtering mechanism (4), sewage mechanism (12), particulate matter and other debris that whole device can effective filtration aquatic effectively guarantee heat supply pipeline's noncongestion and water source screw heat pump set's steady operation, saved tour personnel spending and cost of maintenance simultaneously, realize the automation of filtering and blowdown, make very big support for the development of unmanned on duty station room.
Drawings
FIG. 1 is a schematic view of the structure of the evaporator of the water source heat pump unit according to the present invention;
FIG. 2 is a schematic view of the structure of the condenser of the water source heat pump unit according to the present invention.
In the figure: 1. a hot water delivery pipe; 2. source water (evaporator) or end return water (condenser); 3. a diverter valve; 4. a filtering mechanism; 5. a pressure sensor; 6. electric actuators (diverter valves); 7. a filter screen cylinder; 8. a connecting flange; 9. a pressure sensor; 10. an electric actuator (waste valve); 11. a blowoff valve; 12. a pollution discharge structure; 13. a sewage pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the invention discloses an automatic filtering and sewage discharging device of a water source screw type heat pump unit, and the automatic filtering and sewage discharging system of the water source screw type heat pump unit comprises a filtering mechanism (4) and a sewage discharging mechanism (12). The hot water filtering mechanism (4) is communicated with the filtering mechanism (4) through a hot water conveying pipeline (1) and a connecting flange (8), and the filtering mechanism (4) comprises a flow guide valve (3) and an electric driving device thereof, namely an electric actuator (6) and a sewage discharge pipeline (13), a filter screen cylinder (7), a pressure sensor (5) and a pressure sensor (9). The electric actuator (6) is connected with the water flow diversion valve (3), the blow-down valve (11) is connected with the blow-down pipeline (13), and the electric actuator (10) is connected with the blow-down valve (11); the automatic sewage draining structure comprises a pressure sensor (5), a pressure sensor (9), a sewage draining valve (11), an electric actuator (10) of the sewage draining valve and a sewage draining pipeline (13). The system captures an electric signal converted from a pressure difference signal of the pressure sensor (5) and the pressure sensor (9) through a set signal feedback control system, the electric signal is processed by the signal processing device and then sends a command to control the water flow diversion valve (3) of the filtering mechanism (4) to be closed, and meanwhile, the sewage discharge structure (12) is opened and acts consistently, so that the aim of automatically performing backwashing sewage discharge is fulfilled.
Specifically, the blowdown valve (11) in the blowdown mechanism (12) is a ball valve or other quick blowdown valve in order to strictly avoid leakage of heating water when closed; the working principle of the automatic opening and closing device is the prior art, and the quick opening or closing of the drain valve is realized through the work of the electric actuator.
The working principle and the using process of the invention are as follows: the pressure values of the pressure sensor (5) and the pressure sensor (9) before and after the filtering machine are recorded when the system normally operates, and the difference P between the pressures of the two pressure values0When the system is in operation, the system pressure feedback control system can monitor the real-time pressure difference P between the front and the back of the filter1Assume that P is set1>＝1.2P0Time-starting sewage draining systemSetting the time of each time of pollution discharge to be 5 minutes, and P after the pollution discharge1<1.1P0Considered normal. If the system is running P1<1.2P0If the system determines that the filter is slightly blocked or not blocked, the sewage discharge is not needed; if the water source P1 is at a certain time in the system>1.2P0，The pressure feedback control system receives an electric signal converted from the differential pressure received by the signal processing device, the electric signal is processed by the feedback control system and then sends an opening signal instruction to the electric actuator (6) and the electric actuator (10), the electric actuator (6) acts to close the diversion valve (3), meanwhile, the electric actuator (10) acts to open the blowdown valve (11), at the moment, the backwashing blowdown system is opened to carry out blowdown, the control system automatically sends an instruction to the electric actuator (6) and the electric actuator (9) after 5 minutes of blowdown, the electric actuator (6) controls the action of the diversion valve (3) to be opened, meanwhile, the electric actuator (9) acts to control the opening of the blowdown valve (11), the pressure and the differential pressure are monitored continuously after the system is stabilized, if the differential pressure is P1 at the moment, the differential pressure is monitored continuously<1.2P0When the system is considered to be normal, the system does not discharge sewage for the moment; if the system pressure difference still appears P1 after multiple times of sewage disposal>1.2P0If the phenomenon occurs, a maintenance person needs to detect whether the pressure sensor is misaligned or the filter screen is blocked on site.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Hot water automatic filtration drainage includes filtering mechanism (4), sewerage agencies (11), its characterized in that: the hot water filtering mechanism (4) is communicated with the filtering mechanism (4) through a hot water conveying pipeline (1) through a connecting flange (8), the filtering mechanism (4) comprises a diversion valve (3) and an electric driving device thereof, namely an electric actuator (6) and a sewage discharge pipeline (13), a filter screen cylinder (7) and pressure sensors (5 and 9), the electric actuator (6) is connected with the water flow diversion valve (3), the sewage discharge valve (11) is connected with the sewage discharge pipeline (13), and the electric actuator (10) is connected with the sewage discharge valve (11);
the blowdown mechanism (12) comprises pressure sensors (5 and 9), a blowdown valve (11), an electric actuator (10) of the blowdown valve and a blowdown pipeline (13), and the electric actuator (10) is controlled to operate through an electric signal converted from a pressure difference value of the pressure sensor (5) and the pressure sensor so as to control the opening of the blowdown valve.
2. The automatic filtering drain system according to claim 1, wherein: the upstream pipeline of the filtering mechanism (4) is provided with a pressure transmitter (5), and the downstream pipeline is provided with a pressure sensor (9) for respectively monitoring the pressure change at the front end and the rear end of the filtering mechanism (4).
3. The automatic filtering drain system according to claim 1, wherein: an electric actuator (10) is arranged on a blowdown valve (11) in a blowdown structure (12) to control the opening of a blowdown system.
4. The automatic filtering drain system according to claim 1, wherein: the electric actuator (6) is additionally arranged on the water flow diversion valve (3) of the filtering mechanism (4) to control the opening of the diversion valve, so that the water flow diversion valve (3) and the sewage discharge structure (12) act in the same direction, and the aim of automatically performing backwashing and sewage discharge is fulfilled.
5. The automatic filtering drain system according to claim 1, wherein: the system is provided with a signal feedback control system, the electric signal is converted by capturing the pressure difference value signal of the pressure sensor (5) and the pressure sensor (9), the electric signal is processed by a signal processing device and then sends a command to control the water flow diversion valve (3) of the filtering mechanism (4) to be closed, and meanwhile, the sewage discharge structure (12) is opened and acts consistently, so that the aim of automatically performing backwashing sewage discharge is fulfilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010862679.0A CN113209705A (en) | 2020-08-25 | 2020-08-25 | Automatic filtering and pollution discharging device for screw unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010862679.0A CN113209705A (en) | 2020-08-25 | 2020-08-25 | Automatic filtering and pollution discharging device for screw unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113209705A true CN113209705A (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010862679.0A Pending CN113209705A (en) | 2020-08-25 | 2020-08-25 | Automatic filtering and pollution discharging device for screw unit |
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| Country | Link |
|---|---|
| CN (1) | CN113209705A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115845452A (en) * | 2022-08-25 | 2023-03-28 | 斯麦提克(昆山)精密机械有限公司 | Filter |
| CN117006029A (en) * | 2023-03-24 | 2023-11-07 | 利欧集团浙江泵业有限公司 | An intelligent water pump control module for automatic sewage discharge |
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|---|---|---|---|---|
| CN101275791A (en) * | 2007-03-30 | 2008-10-01 | 同方人工环境有限公司 | Water source heat pump units capable of automatically backwashing sewage water |
| CN201366284Y (en) * | 2008-12-30 | 2009-12-23 | 张明亮 | Full-automatic backwashing pollution discharging straight-through filter |
| CN201632123U (en) * | 2010-03-05 | 2010-11-17 | 沈阳太宇机电设备有限公司 | Electric quick strainer |
| CN202237508U (en) * | 2011-08-01 | 2012-05-30 | 王东明 | Differential pressure energy-saving automatic dirt remover |
| CN206526579U (en) * | 2017-02-06 | 2017-09-29 | 山东易安换热设备有限公司 | A kind of Full automatic differential pressure back-flushing filter |
| CN110384973A (en) * | 2018-04-21 | 2019-10-29 | 威海市远大电器制造有限公司 | Full-automatic backwash drain filter |
| CN209743871U (en) * | 2019-04-09 | 2019-12-06 | 大唐青岛西海岸热力有限公司 | Heating power pipeline scrubbing water discharging device |
-
2020
- 2020-08-25 CN CN202010862679.0A patent/CN113209705A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275791A (en) * | 2007-03-30 | 2008-10-01 | 同方人工环境有限公司 | Water source heat pump units capable of automatically backwashing sewage water |
| CN201366284Y (en) * | 2008-12-30 | 2009-12-23 | 张明亮 | Full-automatic backwashing pollution discharging straight-through filter |
| CN201632123U (en) * | 2010-03-05 | 2010-11-17 | 沈阳太宇机电设备有限公司 | Electric quick strainer |
| CN202237508U (en) * | 2011-08-01 | 2012-05-30 | 王东明 | Differential pressure energy-saving automatic dirt remover |
| CN206526579U (en) * | 2017-02-06 | 2017-09-29 | 山东易安换热设备有限公司 | A kind of Full automatic differential pressure back-flushing filter |
| CN110384973A (en) * | 2018-04-21 | 2019-10-29 | 威海市远大电器制造有限公司 | Full-automatic backwash drain filter |
| CN209743871U (en) * | 2019-04-09 | 2019-12-06 | 大唐青岛西海岸热力有限公司 | Heating power pipeline scrubbing water discharging device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115845452A (en) * | 2022-08-25 | 2023-03-28 | 斯麦提克(昆山)精密机械有限公司 | Filter |
| CN117006029A (en) * | 2023-03-24 | 2023-11-07 | 利欧集团浙江泵业有限公司 | An intelligent water pump control module for automatic sewage discharge |
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Application publication date: 20210806 |