CN210302638U

CN210302638U - Sewage treatment automatically cleaning filtration system

Info

Publication number: CN210302638U
Application number: CN201921118276.4U
Authority: CN
Inventors: 余京儒; 熊礼超
Original assignee: Sichuan Runxing Environmental Protection Technology Co ltd
Current assignee: Sichuan Runxing Environmental Protection Technology Co ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-14
Anticipated expiration: 2029-07-16

Abstract

The utility model provides a sewage treatment automatically cleaning filtration system relates to sewage treatment equipment technical field, it includes the steelframe and the sealed filtration membrane that is fixed in the steelframe both ends, the steelframe encloses into the water purification chamber with filtration membrane, can dismantle on the water purification chamber and be connected with the outlet pipe, the one end that the water purification chamber was kept away from to the outlet pipe is connected in the import of automatically controlled three-way valve, the first export of automatically controlled three-way valve is connected with the variable frequency suction pump through the filter tube, the second export of automatically controlled three-way valve is connected with the back flush pump through the back flush pipeline, the last flowmeter that is provided with of filter tube, automatically controlled three. The problem of among the prior art sewage filter degree of automation low, filtration membrane life hangs down is solved.

Description

Sewage treatment automatically cleaning filtration system

Technical Field

The utility model relates to a sewage treatment device technical field especially relates to a sewage treatment automatically cleaning filtration system.

Background

The sewage treatment refers to that the municipal sewage and the industrial sewage are treated by sewage treatment equipment and then are used for non-drinking purposes such as greening, flushing, ornamental water body supplementing and the like, and the clean water is used for drinking and other purposes with high water quality requirements, so that the purpose of saving water resources is achieved.

A filtering membrane is generally included in a sewage treatment apparatus, and substances harmful to human health, such as hardness, heavy metal ions, bacteria, viruses, chemicals, toxins, etc., in water are removed by passing the water through the filtering membrane. Only water molecules in the raw water are reserved for drinking, and other water molecules including bacteria, viruses, pollutants, water scales and the like are changed into concentrated water to be discharged. In order to control the flow direction of the sewage, a suction pump is usually connected to the water outlet of the filtering membrane module, and the sewage is caused to flow directionally by the negative pressure generated by the suction pump. In the prior art, the sewage quantity can be changed in real time according to the working condition of the whole sewage treatment system, the suction intensity of the suction pump is certain, and the excessive suction force causes impurities to easily enter filter holes of the filter membrane to cause blockage and the energy waste.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem among the prior art, the utility model provides a sewage treatment automatically cleaning filtration system has solved among the prior art problem that sewage filters degree of automation is low, filtration membrane life is low.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:

the utility model provides a sewage treatment automatically cleaning filtration system, it includes the steelframe and seals the filtration membrane that is fixed in the steelframe both ends, the steelframe encloses into the water purification chamber with filtration membrane, can dismantle on the water purification chamber and be connected with the outlet pipe, the one end that the water purification chamber was kept away from to the outlet pipe is connected on the import of automatically controlled three-way valve, the first export of automatically controlled three-way valve is connected with the frequency conversion suction pump through the filtration pipeline, the second export of automatically controlled three-way valve is connected with the back flush pump through the back flush pipeline, be provided with the flowmeter on the filtration pipeline.

Furthermore, the water outlet pipe is connected to the steel frame through the quick connector in a sealing manner. Quick connector connects reliably, and convenient and fast is dismantled in the installation, is convenient for get off the whole dismantlement that steelframe and filtration membrane are constituteed and wash.

Furthermore, filtration membrane passes through threaded fastener can dismantle to be connected in the both ends of steelframe, is convenient for regularly change filtration membrane to guarantee the filter effect, improve sewage treatment's quality.

Furthermore, the filtering membrane comprises a microporous filtering membrane and a filtering screen which are overlapped and fixed into a whole at the edges, the aperture of the filtering hole of the filtering screen is larger than that of the microporous filtering membrane, and the filtering screen is positioned at the water inlet end of the microporous filtering membrane. Filter through the bigger filter screen in aperture and fall large granule impurity, reduce microporous filter's filtration burden, improve microporous filter's life.

Furthermore, the flowmeter is a liquid turbine flowmeter, the measurement precision is high, the system response speed is high, and the control of the filtering system is more accurate and reliable.

Furthermore, the variable-frequency suction pump comprises a suction pump and a frequency converter electrically connected to the suction pump, the suction pump is electrically connected to the controller through a relay, and the frequency converter is electrically connected to the controller.

Furthermore, the model of the back washing pump is RB-72S-4.

The utility model has the advantages that: filtration membrane through steelframe and both ends surrounds into a water purification chamber, go out a variable frequency suction pump of water piping connection in the water purification chamber, produce the negative pressure in making the water purification chamber through the suction pump, make the outer sewage of filtration membrane flow into the water purification chamber under the adsorption of negative pressure, impurity in the sewage is blockked outside by filtration membrane, water after the filtration flows into next treatment facility through the outlet pipe, the negative pressure that produces through variable frequency suction pump decides the flow direction of water, the sealed requirement of filtration membrane installation department has been reduced, conveniently make the processing.

Connect a flowmeter on the front end pipeline of suction pump and can pass through the water yield of filtration membrane in real-time detection to feed back the water yield to the controller, the controller controls the frequency of frequency conversion suction pump according to the size of water yield, makes frequency conversion suction pump according to the size transform operating frequency of water yield, reduces the energy consumption, avoids too big suction increase to adsorb the impurity volume on filtration membrane.

The water outlet pipe is also connected with a back flush pump through an electric control three-way valve, when the water amount fed back by the flowmeter received by the controller is too low, the controller controls the electric control three-way valve to act, the water outlet pipe is communicated with a back flush pipeline and the connection between the water outlet pipe and a filtering pipeline is closed, the back flush pump is controlled to act to inject high-pressure gas into a water purification cavity, the high-pressure gas passes through a filtering hole on the filtering membrane to enter the outside of the water purification cavity and carry impurities clamped on the filtering membrane out, so that the purpose of cleaning the filtering membrane is achieved, the water passing amount of the filtering membrane.

The controller uses the water quantity data fed back by the flowmeter to act as a judgment standard, automatically adjusts the working frequency of the variable-frequency suction pump and automatically controls the action node and time of the backwashing pump, improves the accuracy and convenience of sewage filtration control, improves the sewage treatment effect, and prolongs the service life of the filtering membrane.

Drawings

FIG. 1 is a schematic structural diagram of a sewage treatment self-cleaning filtration system.

Wherein, 1, steel frame; 2. a filtration membrane; 3. a water outlet pipe; 4. an electrically controlled three-way valve; 41. an inlet; 42. a first outlet; 43. a second outlet; 5. a variable frequency suction pump; 51. a filtration pipeline; 6. a backwash pump; 61. back flushing the pipeline; 7. a flow meter; 8. a quick connector.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

As shown in figure 1, the self-cleaning filtering system for sewage treatment comprises a steel frame 1 and filtering membranes 2 which are hermetically fixed at two ends of the steel frame 1, wherein a water purifying cavity is defined by the steel frame 1 and the filtering membranes 2. The filtering membrane 2 is detachably connected to two ends of the steel frame 1 through threaded fasteners. The filtering membrane 2 comprises a microporous filtering membrane and a filtering screen which are overlapped and fixed into a whole at the edges, the microporous filtering membrane is formed by weaving stainless steel wires, and the aperture is 0.1-2 microns. In the prior art, pores having a pore diameter of 0.1 to 10 μm are generally called micropores. The filter screen is a stainless steel filter screen with the aperture between 100 and 150 microns and is used for blocking most of large-particle impurities in the sewage. The edges of the microporous filter membrane and the filter screen are sintered on a rectangular stainless steel guide frame, the guide frame is fixed at one end of the filter screen far away from the microporous filter membrane, bolt holes are processed on the guide frame, and the bolt holes are used for allowing bolts to penetrate through and be connected with the steel frame 1.

The water purifying cavity is detachably connected with a water outlet pipe 3, and the water outlet pipe 3 is hermetically connected to the steel frame 1 through a quick connector 8. Quick connector 8 includes fixed connection in the socket on the steelframe and is fixed in the outlet pipe and with the plug of socket grafting, processing has the inner ring groove in the hole of socket, has placed the snap ring in the inner ring groove, is provided with the broken end on the snap ring, and the snap ring is the ring-shaped thing of a disconnection promptly, the external diameter butt of snap ring on the bottom surface of inner ring groove, the internal diameter of snap ring is less than the top surface of inner ring groove.

When the plug is inserted, the outer diameter of the front end of the plug is smaller than the inner diameter of the clamping ring, the front end of the plug can penetrate through the clamping ring, the plug is continuously inserted, the guide inclined plane on the plug guides the clamping ring to slide into the outer annular groove machined on the larger outer diameter of the plug, due to the existence of the broken end, the circumference of the clamping ring can be stretched until the clamping ring slides into the outer annular groove, the clamping ring loses acting force, the previous circumference is recovered, and the clamping ring is clamped between the outer annular groove and the inner annular groove, so that the socket and the plug are fixed. In order to increase the sealing performance, an O-ring is sleeved on the front end of the plug.

Preferably, the snap ring is six and connects the regular hexagon ring that the stock spliced end to end in proper order for connecting, and the junction of adjacent connection stock passes through short arc pole slick and sly connection, and wherein the junction disconnection of two adjacent connection stock forms disconnected end, and the lateral surface butt of short arc pole is on setting up the inner ring groove on the socket hole, and the medial surface butt of connecting the stock is on setting up the outer ring groove on the outer face of cylinder of plug.

One end of the water outlet pipe 3, which is far away from the water purification cavity, is connected to an inlet 41 of the electric control three-way valve 4, a first outlet 42 of the electric control three-way valve 4 is connected with a variable frequency suction pump 5 through a filter pipeline 51, a second outlet 43 of the electric control three-way valve 4 is connected with a back washing pump 6 through a back washing pipeline 61, a flow meter 7 is arranged on the filter pipeline 51, and the electric control three-way valve 4, the flow meter 7, the variable frequency suction pump 5 and the back washing pump 6.

The frequency conversion suction pump 5 comprises a suction pump and a frequency converter electrically connected with the suction pump, the suction pump is electrically connected with the controller through a relay, and the frequency converter is electrically connected with the controller. The controller is preferably an STM32F103 series single chip microcomputer, controls the starting and stopping of the suction pump by controlling the on-off of a relay, and changes the working frequency of the suction pump by controlling a frequency converter so as to change the suction force of the suction pump.

The flow meter 7 is preferably a liquid turbine flow meter, model LWGY. The flow meter 7 feeds back the water quantity in the filtering pipeline to the controller in real time, and the controller determines the actions of the variable-frequency suction pump 5 and the backwashing pump 6 by comparing the fed-back water quantity with the preset water quantity. The backwash pump 6 is preferably of the type RB-72S-4. The electrically controlled three-way valve 4 is preferably of the type Q915F.

When the filtering system is applied to the existing sewage treatment equipment, the inlet 41 and the first inlet 42 on the electric control three-way valve 4 are in a normally communicated state, so that the water outlet pipe 3 is communicated with the filtering pipeline 51, and the variable-frequency suction pump 5 sucks sewage to filter impurities out of the sewage through the filtering membrane 2. Because the sewage water yield that the difference of people's use water yield in each time quantum leads to discharging is different, and the water yield that needs the suction also is a change value, and is many times less when sewage promptly, if the suction pump adopts same frequency work always, the suction force leads to the filter effect poor inadequately when the water yield is big, and the high-power work of suction pump when the water yield is little leads to the waste of the energy, still can increase the impurity of adsorbing on the filter screen, blocks up the filter screen. The controller controls the frequency converter in real time according to the water quantity to change the working frequency of the suction pump, so that the suction force generated by the suction pump is always matched with the water quantity.

After the filter screen filters for a period of time, the water passing amount is often reduced due to the fact that impurities block the filter screen, when the water amount is detected to be lower than a preset value through the flow meter, the controller controls the variable-frequency suction pump 5 to stop working, controls the electric control three-way valve 4 to communicate the inlet 41 with the second outlet 43, connects the backwashing pump 6 to the water outlet pipe 3, starts the backwashing pump 6 through controlling a relay of the backwashing pump 6, injects a large amount of high-pressure gas into a pure water cavity through the backwashing pump 6 to flush the impurities blocking the filter membrane 2, enables the filter membrane 2 to recover the water passing amount, stops the backwashing pump 6 after the flushing time of the backwashing pump 6 reaches a set value, controls the electric control three-way valve 4 to communicate the inlet 41 with the first outlet 42, and controls the variable.

Claims

1. A sewage treatment self-cleaning filtering system is characterized by comprising a steel frame (1) and filtering membranes (2) which are hermetically fixed at two ends of the steel frame (1), the steel frame (1) and the filtering membrane (2) enclose a water purifying cavity, a water outlet pipe (3) is detachably connected to the water purifying cavity, one end of the water outlet pipe (3) far away from the water purifying cavity is connected with an inlet (41) of the electric control three-way valve (4), a first outlet (42) of the electric control three-way valve (4) is connected with a variable-frequency suction pump (5) through a filter pipeline (51), a second outlet (43) of the electric control three-way valve (4) is connected with a back flush pump (6) through a back flush pipeline (61), and a flow meter (7) is arranged on the filtering pipeline (51), and the electric control three-way valve (4), the flow meter (7), the variable-frequency suction pump (5) and the backwashing pump (6) are electrically connected to the controller.

2. The sewage treatment self-cleaning filtering system of claim 1, wherein the water outlet pipe (3) is hermetically connected to the steel frame (1) through a quick connector (8).

3. The sewage treatment self-cleaning filtering system according to claim 1, wherein the filtering membrane (2) is detachably connected to both ends of the steel frame (1) through threaded fasteners.

4. The sewage treatment self-cleaning filtering system of claim 1, wherein the filtering membrane (2) comprises a microporous filtering membrane and a filtering screen which are overlapped and integrally fixed at the edges, the aperture of the filtering screen is larger than that of the microporous filtering membrane, and the filtering screen is positioned at the water inlet end of the microporous filtering membrane.

5. Sewage treatment self-cleaning filtration system according to claim 1, wherein the flow meter (7) is a liquid turbine flow meter.

6. The wastewater treatment self-cleaning filtration system of claim 1, wherein the variable frequency suction pump (5) comprises a suction pump and a frequency converter electrically connected to the suction pump, the suction pump is electrically connected to the controller through a relay, and the frequency converter is electrically connected to the controller.

7. Self-cleaning sewage treatment filtration system according to claim 1, wherein the backwash pump (6) is of the type RB-72S-4.