CN110803739A - Anti-clogging wastewater ratio - Google Patents
Anti-clogging wastewater ratio Download PDFInfo
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- CN110803739A CN110803739A CN201910951804.2A CN201910951804A CN110803739A CN 110803739 A CN110803739 A CN 110803739A CN 201910951804 A CN201910951804 A CN 201910951804A CN 110803739 A CN110803739 A CN 110803739A
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- water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—Controlling or regulating
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The anti-blocking wastewater ratio comprises a connecting pipe and is characterized in that a hydroelectric generator is arranged at the water inlet end of the connecting pipe, the hydroelectric generator comprises a shell, an end cover, an impeller, a shell, a stator and a rotor, the impeller comprises a wheel shaft and blades arranged at the front end of the wheel shaft, the wheel shaft can be rotatably arranged on the end cover, and the blades are positioned in a cavity formed by the shell and the end cover; the shell is positioned above the end cover; the stator is arranged in the shell; the rotor can be rotationally arranged on the inner wall of the stator, the bottom end of the rotor is connected with the wheel shaft, and the rotor can cut magnetic lines of force in a rotating state. Convert water pressure into electric energy, convert the most in the pressure energy that it contains into the electric energy earlier to reduce the waste water pressure before the connecting pipe, can not only improve the diameter of waste water than the connecting pipe, reduce the processing technology degree of difficulty and jam risk.
Description
Technical Field
The invention relates to an accessory of a water purifier, in particular to a wastewater ratio device arranged at a water outlet end of a reverse osmosis filter element.
Background
The household reverse osmosis water purifier uses a reverse osmosis membrane as a core filtering element. When the reverse osmosis membrane normally works, a certain water inlet pressure must be maintained in front of the membrane to ensure that the reverse osmosis membrane has higher desalination rate and water yield. In order to maintain the necessary membrane feed water pressure and to pass a portion of the feed water through the filtration membrane to pure water, a waste water ratio is usually selected as a throttling device to reduce the waste water flow of the reverse osmosis membrane. The waste water is a slender connecting pipe with a larger ratio of length to aperture (generally more than 10) than the core component, the connecting pipe is usually made of stainless steel, the flow is regulated through a piezoresistor, and then proper membrane front pressure is provided for the filtering membrane to overcome osmotic pressure water production, so that certain purified water flow, desalination rate and the like are ensured.
The reverse osmosis membrane can intercept most organic matters, salts and the like in water, the substances are concentrated in the wastewater flow channel and discharged through the wastewater ratio, and when wastewater stays in the wastewater ratio for a long time, the substances can stay in the wastewater ratio due to physical and chemical processes such as crystallization and the like, so that the pipeline is blocked, and the reverse osmosis membrane works abnormally. The waste water is usually thinner than the inner stainless steel pipe, for example, a waste water ratio of 0.42MPa and 1L/min of waste water yield is obtained, and the inner diameter of the stainless steel pipe is only 0.9 mm-1 mm, which is very small compared with the common 2-minute pipe with an inner diameter of 3.5mm or 3-minute pipe with an inner diameter of 6.5 mm. The waste water ratio realizes throttling by utilizing a small pipe diameter, which brings a blocking risk to the waste water ratio, and the development of the waste water ratio which has a thicker pipe diameter and can realize throttling is necessary.
When the water purifier works normally, the waste water has certain pressure and flow rate compared with the water flow in the front end pipeline, for example, the water pressure of the waste water of a certain 600G water purifier before the waste water is compared with the water flow is about 0.7MPa, and the flow rate of the water in a 3-minute pipe is 2.4 m/s. Due to the high pressure and flow rate, a great deal of energy is contained in the water flow, and finally the energy is dissipated by friction with the wall surface, entering a sewer at a high flow rate and the like.
Disclosure of Invention
The present invention is directed to provide a waste water ratio that is converted from pressure to electric energy and prevents clogging, in view of the above-mentioned technical situation.
The technical scheme adopted by the invention for solving the technical problems is as follows: the anti-blocking wastewater ratio comprises a connecting pipe and is characterized in that a hydroelectric generator is arranged at the water inlet end of the connecting pipe, and the hydroelectric generator comprises
A water inlet is formed in the side wall of the shell; the bottom end of the water outlet is connected with the connecting pipe;
an end cover hermetically arranged on the port of the shell;
the impeller comprises an axle and blades arranged at the front end of the axle, the axle can be rotatably arranged on the end cover, and the blades are positioned in a cavity formed by the shell and the end cover;
the shell is positioned above the end cover;
the stator is arranged in the shell; and
and the rotor can be rotatably arranged on the inner wall of the stator, the bottom end of the rotor is connected with the wheel shaft, and the rotor can cut magnetic lines of force in a rotating state.
Preferably, the end cover is provided with a through hole for the wheel shaft to penetrate through, the outer end of the through hole is provided with a mounting groove, a gasket and a sealing ring are arranged in the mounting groove, and a pressing cap is arranged at the end port of the mounting groove to press the gasket and the sealing ring.
Preferably, the front end of the wheel shaft forms an expanding head part, the expanding head part is in a conical shape, and the blades are arranged on the conical surface of the expanding head part in an arc shape.
Furthermore, the lower end of the shell is in a conical shape and is matched with the expanded head of the wheel shaft.
The inner side of the water outlet of the shell is provided with a supporting pad for water flow to pass through, the supporting pad is provided with a shaft groove, and the bottom end of the expanded head is provided with a shaft pin part which is in running fit with the shaft groove. The impeller rotation will be more smooth.
Compared with the prior art, the invention has the advantages that: convert water pressure into electric energy to realize water purification system's waste water and before the connecting pipe that flows to waste water ratio with high speed, convert the most in the pressure energy that it contains into the electric energy earlier, thereby reduce the waste water pressure before the connecting pipe, so can not only improve the diameter of waste water ratio connecting pipe, reduce the processing technology degree of difficulty and jam risk, also can reduce the noise when the rivers pass through simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment.
Fig. 2 is an exploded view of a hydro-generator.
Fig. 3 is an enlarged perspective sectional view of the hydro-generator.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, fig. 2 and fig. 3, the anti-clogging waste water ratio in the present embodiment includes a connecting pipe 10, and a hydroelectric generator 100 is provided at a water inlet end of the connecting pipe 10, and the hydroelectric generator 100 includes a housing 11, an end cover 12, an impeller 2, a casing 3, a stator 31 and a rotor 32. The connection tube 10 here is similar to a stainless steel capillary tube.
A water inlet 111 is formed in the side wall of the shell 11, a support pad 5 through which water can flow is arranged on the inner side of a water outlet 112 of the shell 11, and a shaft groove 51 is formed in the support pad 5; a water outlet 112 connected with the connecting pipe 10 is formed at the bottom end; the lower end of the housing 11 is tapered to fit the enlarged head 23 of the axle 21. An end cap 12 is sealingly provided on the port of the housing 11. The end cap 12 is fixed to the housing 11 by ultrasonic welding, screwing, gluing, etc.
The impeller 2 includes a wheel shaft 21 and blades 22 provided at a front end of the wheel shaft 21, specifically, an enlarged head 23 is formed at the front end of the wheel shaft 21, the enlarged head 23 is in a conical shape, and the blades 22 are arranged on a conical surface of the enlarged head 23 in an arc shape. The wheel shaft 21 can be rotatably arranged on the end cover 12, and the blades 22 are positioned in a cavity formed by the shell 11 and the end cover 12; the bottom end of the enlarged head 23 has a shaft pin portion 24 which is rotatably fitted in the shaft groove 51.
The end cover 12 and the axle 21 are sealed in such a way that the end cover 12 has a through hole for the axle 21 to pass through, the outer end of the through hole is provided with a mounting groove 121, a gasket 41 and a sealing ring 42 are arranged in the mounting groove 121, a pressing cap 43 is arranged at the end of the mounting groove 121 to press the gasket 41 and the sealing ring 42, and a pressing gasket 44 is further arranged on the inner side of the pressing cap 43. The gasket 41, the sealing ring 42 and the pressing gasket 44 mainly serve as dynamic seals to prevent water leakage when the rotor rotates.
The housing 3 is located above the end cap 12, and the housing 3 is composed of a cylinder 3a and a cover plate 3 b. The stator 31 is arranged in the housing 3; the rotor 32 is rotatably installed on the inner wall of the stator 31 through an upper bearing 33 and a lower bearing 34, and the bottom end is connected to the wheel shaft 21, and the rotor 32 can cut magnetic lines in a rotating state.
In operation, water flows in through the water inlet 111 of the housing and then passes through the cavity, thereby driving the impeller 2 to rotate, and the impeller 2 drives the rotor 11 to rotate, thereby generating electric energy.
The anti-blocking principle is as follows:
for a general hydroelectric generator, the output power P is as follows:
P＝9.81QHη
wherein P is the output power (w) and Q is the flow (10)-3m3H is pressure head (m), which is effective head of hydraulic turbine to do work, η is total efficiency of hydraulic generator η - ηwηeWherein ηwFor turbine efficiency, typically 80% to 90%, the median value 85% is taken as an example, which means that 85% of the pressure potential energy is converted into the input mechanical energy of the motor ηeFor generator efficiency, it is usually 80% to 95%, and for small hydro-generators, η is usually 60% to 80%.
According to the Bernoulli equation, the pressure head H ═ p/ρ g, and H ∈ p when ρ hardly changes because water can be regarded as incompressible fluid, that is, H ∈ p, that is, H is equal to ρ
ΔH∝Δp
η when pressure head is lost due to work and frictionwBy time, it is meant that the pressure of the wastewater at the front end (i.e., the pressure at the end of the water wheel) is compared to the pressure loss η at the front end of the water wheelw. Pressure at the front end of the water wheel is denoted as p0The waste water is then at a pressure p higher than the front end pressure1＝(1-ηw)p0。
For an elongated capillary tube, the relationship between the flow rate, the cross-sectional area and the pressure difference between the two ends is
Wherein kappa is a constant irrelevant to section radius, pressure difference and the like, A is the ratio of the waste water to the internal section area of the inner capillary, and when the pipe is in laminar flow, N is 1; when laminar flow is in the tube, N is 2. Delta p is the pressure difference between the front end and the rear end of the capillary tube and the pressure difference between the front end and the rear end of the capillary tube, namely delta p and p, since the water outlet is atmospheric pressure and the pressure difference between the front end1＝(1-ηw)p0。
Generally, in the process of maintaining the pressure of the waste water ratio front end unchanged, the water wheel part and the water wheel part are added, the flow rate of the waste water ratio water flow is not changed greatly, namely the flow rate of the waste water ratio water flow is maintained unchanged before and after Q. Recording the required sectional area of the wastewater ratio capillary tube when no water wheel part is added in the wastewater ratio as A1Corresponding to a pressure difference Δ p1＝p0The section area of the wastewater ratio capillary tube required when the water wheel part is added in the wastewater ratio is A2，Δp2＝p1＝(1-ηw)p0. At this time, the process of the present invention,
then
When laminar flow is inside the capillary, N1, ηw80% -90%, in this case
η when turbulence is present inside the capillary tube, N is 2w80% -90%, in this caseGenerated power:
the output power P of the generator is 9.81QH η, and the output power P of the small-sized hydro-generator η is usually 60% to 80%
Examples illustrate that:
taking a 600G water purifier as an example, the pressure after the membrane (namely the pressure of the waste water to the front end) is 0.7MPa, the net waste ratio is 2: 1, when no water turbine part is added, the inner diameter of the waste water to the capillary is 0.8mm, the length of the waste water is 30mm, and the flow rate Q of the waste water is 1.315 multiplied by 10-5m3The flow rate of water is 10.9m/s, the Reynolds number in the capillary is more than 100000, the water flow is in a turbulent state, and when the cross section area of the capillary is smallerWhen the area is increased to 3.16 times of the original area, the Reynolds number is more than 10000, and the water flow is still in a turbulent flow state. At this time
That is, by adding the water turbine part, the cross-sectional area of the capillary tube is increased from the initial 2.01mm2Can be increased to 3.58mm at most2(the capillary diameter at this time was 1.07mm), the cross-sectional area increased by 78%. Generated power at this timeH＝0.55～0.73w。
Claims (5)
1. The anti-blocking wastewater ratio comprises a connecting pipe (10), and is characterized in that a hydroelectric generator (100) is arranged at the water inlet end of the connecting pipe (10), and the hydroelectric generator (100) comprises
A water inlet (111) is formed in the side wall of the shell (11); a water outlet (112) connected with the connecting pipe (10) is formed at the bottom end;
an end cap (12) hermetically provided at an end of the housing (11);
the impeller (2) comprises an axle (21) and blades (22) arranged at the front end of the axle (21), the axle (21) can be rotatably arranged on the end cover (12), and the blades (22) are positioned in a cavity formed by the shell (11) and the end cover (12);
a housing (3) positioned above the end cap (12);
a stator (31) provided in the housing (3); and
and a rotor (32) rotatably provided on the inner wall of the stator (31) and having a bottom end connected to the wheel shaft (21), wherein the rotor (32) can cut magnetic lines of force in a rotating state.
2. The anti-clogging wastewater ratio according to claim 1, characterized in that the end cover (12) has a through hole for the axle (21) to pass through, the outer end of the through hole is provided with a mounting groove (121), the mounting groove (121) is internally provided with a gasket (41) and a sealing ring (42), and the port of the mounting groove (121) is provided with a pressing cap for pressing the gasket (41) and the sealing ring (42).
3. The anti-clogging waste water ratio according to claim 1, characterized in that the front end of the wheel shaft (21) forms an enlarged head (23), the enlarged head (23) is in a conical shape, and the vanes (22) are arranged on the conical surface of the enlarged head (23) in an arc shape.
4. Anti-clogging waste water ratio according to claim 3, characterized in that the lower end of the housing (11) is conical to fit the enlarged head (23) of the axle (21).
5. The anti-clogging wastewater ratio according to claim 4, characterized in that the inner side of the water outlet (112) of the housing (11) is provided with a support pad (5) for water flow, the support pad (5) is provided with a shaft groove (51), and the bottom end of the enlarged head (23) is provided with a shaft pin part (24) which is rotatably matched with the shaft groove (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951804.2A CN110803739A (en) | 2019-10-09 | 2019-10-09 | Anti-clogging wastewater ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951804.2A CN110803739A (en) | 2019-10-09 | 2019-10-09 | Anti-clogging wastewater ratio |
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| Publication Number | Publication Date |
|---|---|
| CN110803739A true CN110803739A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910951804.2A Pending CN110803739A (en) | 2019-10-09 | 2019-10-09 | Anti-clogging wastewater ratio |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020113442A1 (en) * | 2001-02-09 | 2002-08-22 | Yukinobu Yumita | Small hydroelectric power generator |
| CN201204518Y (en) * | 2008-06-03 | 2009-03-04 | 江志云 | Axial flow type pipe generator |
| CN103288176A (en) * | 2012-02-23 | 2013-09-11 | 江苏正本净化节水科技实业有限公司 | Throttling device |
| CN110219764A (en) * | 2019-06-24 | 2019-09-10 | 郑州工业应用技术学院 | Waste water electrical power generating system |
-
2019
- 2019-10-09 CN CN201910951804.2A patent/CN110803739A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020113442A1 (en) * | 2001-02-09 | 2002-08-22 | Yukinobu Yumita | Small hydroelectric power generator |
| CN201204518Y (en) * | 2008-06-03 | 2009-03-04 | 江志云 | Axial flow type pipe generator |
| CN103288176A (en) * | 2012-02-23 | 2013-09-11 | 江苏正本净化节水科技实业有限公司 | Throttling device |
| CN110219764A (en) * | 2019-06-24 | 2019-09-10 | 郑州工业应用技术学院 | Waste water electrical power generating system |
Non-Patent Citations (2)
| Title |
|---|
| 胡本哲: "《电力生产过程 试用本》", 31 December 1983, 水力电力出版 * |
| 袁达夫: "《湖北水电机电及金属结构》", 31 May 2016, 长江出版社 * |
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Application publication date: 20200218 |
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