CN110201444A - A kind of Microfilter with back purge system and micro-filtration precipitate all-in-one machine - Google Patents

Abstract

The invention discloses a kind of Microfilters with back purge system, it includes screen support frame and back purge system with strainer, the back purge system includes backwash water inlet pipe and at least two backwash outlet pipes, the water outlet of the backwash water inlet pipe is connected to backwash outlet pipe upper end, the backwash outlet pipe lower end edge screen support frame circle distribution, the strainer is vertical setting, being equipped between the backwash outlet pipe and backwash water inlet pipe makes to backwash outlet pipe lower end automatically around the rotating mechanism of screen support frame circular-rotation, it is low that the present invention provides a kind of control system requirement, filter effect is good, backwash effect is good and does not influence the Microfilter with back purge system of equipment normal operation and micro-filtration precipitating all-in-one machine.

Description

A microfiltration machine with a backwashing device and a microfiltration and sedimentation integrated machine

technical field

The invention relates to the technical field of filtration equipment, in particular to a microfiltration machine with a backwashing device and a microfiltration and sedimentation integrated machine.

Background technique

The microfilter is a screen filter that traps fine suspended matter. Usually, a microporous screen of 80-200 mesh/square inch is fixed on the drum type filter equipment, and the solid particles in the water are intercepted through the screen to achieve solidification. liquid separation. The working principle of the horizontal drum microfiltration machine is: the treated water enters the drum of the horizontal drum microfiltration machine along the axial direction, and flows out through the screen in a radial radial shape, and the fine suspended matter in the water is trapped in the horizontal drum microfiltration machine. The inner surface of the filter screen on the drum of the rotary drum microfiltration machine. When the impurities trapped on the filter screen are brought to the upper part of the horizontal drum microfiltration machine by the drum, they are backwashed by the pressure flushing water into the slag discharge tank and flow out. According to the prior art, when the horizontal drum microfilter is running, at least 2/5 of the diameter of the drum is above the water surface, so the actual filtration area is small, resulting in a small processing capacity and a large footprint. The horizontal drum microfilter requires two power outputs, one is the transmission force to rotate the drum shaft, and the other is the backwashing power of the drum filter screen, and the energy consumption is relatively high. Moreover, backwashing is generally set to realize automatic backwashing according to the liquid level in the microfilter, so the drum microfilter needs to be equipped with a high-demand control system, and the liquid level controller is easily damaged, resulting in backwashing not starting in time and causing the filter to The net is blocked, so the drum microfilter needs to be equipped with a high-demand control system, and the control system has high requirements. In addition, when there are many solid pollutants in the water, when the drum is used for a long time, the impurities are easy to block the inside of the drum filter, so that the drum cannot filter the impurities in the water more effectively, resulting in poor filtering effect and backwashing. Frequent startup affects the normal operation of the device.

At present, the equipment used for solid-liquid separation in water treatment technology mainly includes sedimentation tanks, filters, microfilters, etc. The sedimentation tank is to use the characteristic that the suspended solids in water are heavier than water to gradually settle the suspended solids from the water body to be removed; the filter and microfilter are to make the suspended solids adhere to the surface of the filter material or pass through the microporous screen. The blocking effect is removed. Generally, solid-liquid separation equipment has the following problems: 1. In order to obtain a better sedimentation effect, the design of the sedimentation tank requires a small surface load, resulting in a large area of the sedimentation tank; 2. The filter material in the filter tank is easy to block, It needs to be replaced regularly, requires high backwashing intensity and complicated operation; 3. The actual filtration area of the drum microfilter is small, and it is generally designed to realize automatic backwashing through the liquid level in the machine, so the drum microfilter needs to be configured more High-demand control system, and the liquid level controller is easily damaged, resulting in backwash not starting in time and causing the filter to be clogged. In addition, when the water contains more solid pollutants, when the drum is used for a long time, impurities are easy to block in the drum The inside of the filter makes the drum unable to filter the impurities in the water more effectively, resulting in poor filtering effect and frequent backwashing, which affects the normal operation of the equipment.

Contents of the invention

The technical problem to be solved by the present invention is: to overcome the defects of the prior art above, to provide a microfilter with a backwash device and a micro Filtration and precipitation all-in-one machine.

In order to achieve the above object, technical scheme of the present invention is:

A microfilter with a backwashing device, which includes a filter screen support frame with a filter screen and a backwashing device, the backwashing device includes a backwashing water inlet pipe and at least two backwashing water outlet pipes, the backwashing The water outlet of the flushing water inlet pipe is connected to the upper end of the backwashing water outlet pipe, the lower end of the backwashing water outlet pipe is distributed along the circumference of the filter screen support frame, the described filter screen is vertically arranged, and the described backwashing water outlet pipe is connected to the backwashing water outlet pipe. A rotating mechanism is provided between the water inlet pipes to make the lower end of the backwash outlet pipe automatically rotate around the circumference of the screen support frame.

After adopting the above structure, the present invention has the following advantages compared with the prior art: the placement direction of the filter screen is perpendicular to the horizontal plane, that is, the filter screen of the microfilter is placed vertically. When the vertical microfiltration machine is working, the filter screen of the entire vertical microfiltration machine is almost completely immersed in the water to be treated (only the upper part with a height of 10mm-200mm needs to be exposed to the water surface), so when using the same area of the filter screen, the vertical The filter area of the filter is larger than that of the horizontal drum microfilter, and the amount of treated water is also large. And because the filter screen is vertical, the filter area can be increased by increasing the height of the filter screen of the vertical microfilter without increasing the occupied area. But for the horizontal drum microfilter, it can only be extended from the length direction, so the vertical microfilter of the present invention has a smaller footprint and better filtering effect. At the same time, since the backwash outlet pipe and the backwash inlet pipe are provided with a rotating mechanism that makes the lower end of the backwash outlet pipe automatically rotate around the circumference of the filter screen support frame, the backwash outlet pipe can be rotated without an additional motor. For backwashing, the control system has low requirements, the filtering effect is good, the backwashing effect is good, and the normal operation of the equipment is not affected.

Preferably, the rotating mechanism includes a fixed bracket, a backwash sleeve and a backwash water distribution pipe, the fixed bracket is arranged on the upper end of the filter screen support frame or is located above the filter screen support frame, and the described backwash device is set On the fixed bracket, one end of the backwashing sleeve is connected to the water outlet of the backwashing water inlet pipe, and the other end of the backwashing sleeve is connected to the backwashing water distribution pipe, and the backwashing water distribution pipe is automatically rotated to fit in the In the other end of the backwash sleeve, the upper end of the backwash outlet pipe communicates with the backwash water distribution pipe, and the lower end of the backwash outlet pipe extends from the upper end of the filter screen support frame to the lower end of the filter screen support frame. The side of the lower end of the outlet pipe is provided with several openings, and the openings face the filter screen. The backwashing device includes a backwashing water inlet pipe, a backwashing sleeve, a backwashing water distribution pipe and at least two backwashing outlet pipes. The sleeve is connected with the backwashing water inlet pipe and the backwashing water distribution pipe, so that the backwashing water distribution pipe can automatically rotate and fit on the backwashing sleeve. In the process of backwashing, the water inlet end of the backwashing water pipe is connected to the water pump, and the backwashing water flows through the backwashing sleeve, the backwashing water distribution pipe and the backwashing water outlet pipe in sequence, and then flows through the opening of the backwashing water outlet pipe with a certain amount of water. The angle sprays onto the filter screen, so that the backwash outlet pipe and the backwash water distribution pipe rotate automatically under the force of the water spray, and the backwash device can backwash the filter screen in all directions, without the need for additional motor-driven backwashing equipment. The water pipe rotates, the requirements for the control system are low, the backwashing effect is good, and the normal operation of the equipment is not affected. The filter screen is cylindrical, adopts a microporous screen of 20-400 mesh/square inch, can choose 100, 200 and 300 mesh/square inch, and preferably adopts a microporous screen of 200 mesh/square inch as a filter screen.

As a preference, the backwash sleeve is provided with a first through hole along the axial direction of the backwash sleeve, and the end of the backwash sleeve near the backwash water distribution pipe is provided with a second through hole. The diameter of the second through hole is smaller than the diameter of the first through hole. The end of the backwash water distribution pipe near the backwash sleeve is provided with a protrusion protruding from the end of the backwash sleeve, and the protrusion extends through the second through hole. into the first through hole, the protrusion is located at the end of the first through hole and is provided with a sealing ring, and the sealing ring is lapped on the surface of the first through hole near the second through hole, and the structure is simple, so that the reverse The flushing water distribution pipe can be automatically rotated and fit in the backwashing sleeve, and the sealing ring is a metal sealing ring to ensure that water will not seep from between the raised outer surface and the inner surface of the second through hole, and the reliability is high.

As a preference, the backwash water outlet pipe includes a backwash water outlet horizontal pipe parallel to the horizontal plane and a backwash water outlet vertical pipe perpendicular to the horizontal plane, the backwash water outlet horizontal pipe is located at the upper end of the filter screen support One end of the flushing water outlet horizontal pipe is connected to the backwashing water distribution pipe, the upper end of the backwashing water outlet vertical pipe is connected to the other end of the backwashing water outlet horizontal pipe, and the lower end of the backwashing water outlet vertical pipe extends to the lower end of the filter screen support frame. The openings are set on the backwash outlet vertical pipe, and the positions of the openings on the adjacent backwash outlet vertical pipes are staggered from each other. The structure is simple, easy to set the opening, and the backwash effect is good. The backwash water distribution pipe and the backwash outlet pipe can be separated. Detachable connection, the backwash water distribution pipe and the backwash outlet pipe are connected by a joint, which is convenient for the installation and disassembly of the backwash device. All can be washed away by backwash water to prevent pollutants from clogging the filter.

As a preference, a universal joint nozzle is provided in the opening, the nozzle can rotate around the axis of the backwash sleeve under the thrust of the water, the backwash effect is good, and the installation of the nozzle can effectively improve the flushing force of the backwash water on the filter screen Moreover, the spraying direction of the nozzle can be adjusted more flexibly, and the backwashing effect on the filter screen is better.

As a preference, the diameter of the openings on the standpipe of the backwash outlet pipe is 1 mm to 20 mm, the apertures can be 5, 10 and 15 mm, the spacing of the holes is 10 mm to 200 mm, and the spacing of the holes can be 50, 100 and 150 mm. The diameter of the openings on the standpipe of the backwash outlet pipe is 5 mm, and the spacing between the openings is 100 mm. When the backwash water is sprayed from the opening, in addition to scouring the filter screen, it also provides a rotating power for the backwash device, so as to continuously flush the filter screen with water, prevent pollutants from clogging the filter screen, and improve the efficiency of the vertical filter. filter effect.

Preferably, the straight-line distance between the backwash outlet vertical pipe and the filter screen is not more than 100 mm, preferably 50, 60 and 80 mm. If the distance between the backwash water outlet standpipe and the filter screen is too large, the backwash water sprayed by the backwash water outlet standpipe will decrease with the increase of the spray distance, and the washing force on the filter screen will be weakened, which will affect the backwash effect.

As a preference, the backwash water outlet standpipe is located inside the filter screen support frame, and the fixed bracket is fixed on the upper end of the filter screen support frame. This is the first embodiment. Enter, filter through the filter screen and enter the outside and inside of the filter screen support frame, and then flow out from the bottom of the filter screen support frame.

As a preference, the backwash outlet vertical pipe is located outside the filter screen support frame, and the fixed bracket is located above the filter screen support frame. This is the second embodiment. Enter the filter screen support frame, flow out from the filter screen support frame after filtering through the filter screen.

Preferably, the number of the backwash outlet pipes is four, and the backwash outlet pipes are evenly distributed along the circumference of the filter screen support frame, and the backwash effect is good.

Preferably, it also includes a bottom plate, the bottom plate is arranged at the bottom of the screen support frame, and the bottom plate is provided with a water outlet to facilitate the discharge of filtered water or filtered impurities.

As a preference, the axis of the opening forms an angle with the upper surface of the screen support frame, the angle is 0°～90°, the angle can be 30°, 45° and 60°, the angle is The angle formed by the opening direction of the backwash outlet vertical pipe and the center line of the backwash outlet horizontal pipe is 30°. The four backwash vertical pipes The orientation of the openings is consistent, so that when the backwashing water is sprayed from the openings, in addition to washing the filter screen, it also provides a rotating power for the backwashing device, thereby continuously hydraulically washing the filter screen to prevent pollutants from clogging the filter screen. And to improve the filtering effect of the vertical filter, the filter screen support frame is located on the inner side of the filter screen to support and fix the filter screen.

An all-in-one microfiltration and sedimentation machine, comprising a housing, a water inlet, a water outlet, a sewage outlet, and a microfiltration machine with a backwashing device according to any one of claims 1-7, and the filter screen support is erected on In the upper part of the housing, the space between the housing and the filter screen support frame forms a cavity, and the water inlet, water outlet and sewage outlet are all arranged on the outer wall of the housing, and the cavity is provided with There is an integrated mechanism for sedimentation and filtration, and the integrated mechanism for sedimentation and filtration can be set up to conduct sedimentation and filtration in the shell at the same time. The water to be filtered enters the shell from the water inlet for filtration and precipitation, and the filtered water is discharged from the water outlet. The impurities in the sewage are discharged from the sewage outlet.

As a preference, the integrated sedimentation and filtration mechanism means that the lower end of the cavity is provided with a sedimentation area, the water inlet is connected to the upper end of the cavity, the water outlet and the water outlet are provided with an outlet pipe, and the outlet The water outlet is connected to the water outlet through the outlet pipe. A sewage discharge pipe is provided between the sewage outlet and the sedimentation area. The sewage enters the cavity through the water inlet. Most of the solid particles or suspended matter in the sewage are in the lower part of the cavity due to gravity. The sedimentation area of the sedimentation area is first separated by sedimentation, and is collected at the bottom of the sedimentation area, and is regularly discharged from the integrated equipment through the sewage pipe from the sewage outlet. The solid particles or suspended solids in the sewage that have not been separated by precipitation rise to the middle and upper part of the cavity with the direction of water flow, and are intercepted outside the vertical microfilter through the interception of the filter screen of the vertical microfilter. The water enters the inside of the vertical microfilter, and is discharged from the water outlet on the shell through the outlet pipe connected with the water outlet of the vertical microfilter. Sewage enters the integrated microfiltration and sedimentation equipment for sedimentation and separation first, which can effectively reduce the filtration load of the subsequent vertical microfiltration machine, and can effectively alleviate the problem that the filter screen of the vertical microfiltration machine is easy to block. Filtration treatment, so the requirements for the removal of suspended matter in the sedimentation area are not high, and the surface load of the design of the sedimentation area is relatively large, thereby effectively reducing the footprint of the equipment. Moreover, the sewage undergoes dual functions of sedimentation and microfiltration, the SS in the effluent is very low, and the effluent effect is good. This is the integrated microfiltration and sedimentation machine made by the first embodiment. The sedimentation area is an inverted conical or inverted trapezoidal structure, and the bottom plate It is sealed and connected with the filter screen and the filter screen support frame, so that the filtered water can be discharged easily.

As a preference, the integrated sedimentation and filtration mechanism means that a sedimentation cover is provided at the lower end of the filter screen support frame, and the precipitation cover is connected to the water outlet, and a sewage discharge pipe is provided between the sewage outlet and the bottom of the sedimentation cover. A water inlet pipe is provided between the water inlet and the filter screen support frame, and the water outlet is connected with the cavity. The sewage enters the lower part of the vertical microfiltration machine through the water inlet and the water inlet pipe. Most of the solid particles or Due to the action of gravity, the suspended solids are first precipitated and separated in the sedimentation hood at the lower part of the vertical microfiltration machine, and are collected at the bottom of the sedimentation hood, and are regularly discharged from the integrated equipment through the sewage pipe from the sewage outlet. The solid particles or suspended solids in the sewage that have not been separated by precipitation rise to the upper part of the vertical microfilter with the direction of water flow, and are intercepted in the vertical microfilter through the interception of the filter screen of the vertical microfilter. Clean water enters the cavity (clear water area) through the filter screen, and is discharged from the water outlet on the shell. This is the integrated microfiltration and sedimentation machine made by the second embodiment. The sedimentation cover is inverted conical or inverted trapezoidal The sedimentation hood is conducive to the natural settlement and discharge of the pollutants from backwashing.

Description of drawings

Fig. 1 is the three-dimensional view of the first embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine of the present invention;

Fig. 2 is a front sectional view of the microfiltration machine of the first embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine of the present invention;

Fig. 3 is a perspective view of a second embodiment of a microfiltration machine with a backwashing device and a microfiltration sedimentation integrated machine according to the present invention;

Fig. 4 is a front cross-sectional view of the second embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine of the present invention;

Fig. 5 is a front view of a microfiltration machine with a backwashing device and a microfiltration and sedimentation integrated machine backwashing device of the present invention;

Fig. 6 is a front sectional view of the connection between the backwash sleeve and the backwash water distribution pipe of a microfiltration machine with a backwash device and a microfiltration sedimentation all-in-one machine according to the present invention;

Fig. 7 is a perspective view of a first embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine according to the present invention;

Fig. 8 is a front sectional view of the first embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine of the present invention;

Fig. 9 is a top view of a first embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine according to the present invention;

Fig. 10 is a perspective view of a second embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine according to the present invention;

Fig. 11 is a front sectional view of a second embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine of the present invention;

Fig. 12 is a top view of a second embodiment of a microfiltration machine with a backwashing device and a microfiltration and sedimentation all-in-one machine according to the present invention.

Among them, 1. Filter screen support frame, 2. Opening hole, 3. Fixed bracket, 4. Bottom plate, 5. Backwashing device, 6. Backwashing water inlet pipe, 7. Backwashing sleeve, 8. Backwashing water distribution pipe, 9. Backwash water outlet pipe, 10. Backwash water outlet horizontal pipe, 11. Backwash water outlet vertical pipe, 12. Water outlet, 13. Shell, 14. Filter screen, 15. Cavity, 16. First through hole, 17, second through hole, 18, protrusion, 19, sealing ring, 20, water inlet, 21, water outlet, 22, sewage outlet, 23, sewage pipe, 24, sedimentation cover, 25, water inlet pipe, 26, sedimentation District, 27, universal joint nozzle, 28, water outlet pipe.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in the figure, the present invention provides a microfilter with a backwashing device, which includes a filter screen support frame 1 with a filter screen 14 and a backwashing device 5, and the backwashing device 5 includes a backwashing water inlet pipe 6 And at least two backwash outlet pipes 9, the water outlet of the backwash inlet pipe 6 communicates with the upper end of the backwash outlet pipe 9, the lower end of the backwash outlet pipe 9 is distributed along the circumference of the filter screen support frame 1, the The filter screen 14 is set up vertically, and a rotating mechanism is provided between the backwash outlet pipe 9 and the backwash inlet pipe 6 to automatically rotate the lower end of the backwash outlet pipe 9 around the filter screen support frame 1 circle. The advantage is that the placement direction of the filter screen 14 is perpendicular to the horizontal plane, that is, the filter screen 14 of the microfilter is placed vertically. When the vertical microfilter is working, the filter screen 14 of the whole vertical microfilter is almost completely immersed in the water to be treated (only the upper 10mm-200mm height part needs to be exposed to the water surface), so when using the same area of the filter screen, immediately The filter area of the type filter is larger than that of the horizontal drum filter, and the amount of treated water is also large. And because the filter screen 14 is vertical, the filter area can be increased by increasing the height of the filter screen 14 of the vertical microfilter without increasing the occupied area. But for the horizontal drum microfilter, it can only be extended from the length direction, so the vertical microfilter of the present invention has a smaller footprint and better filtering effect. Simultaneously because backwash outlet pipe 9 and backwash water inlet pipe 6 are provided with the rotation mechanism that makes backwash outlet pipe 9 lower ends automatically rotate around the filter screen support frame circumference, makes backwash outlet pipe 9 need not additionally be provided with motor and just can rotate , backwash the filter screen 14, the control system has low requirements, the filtering effect is good, the backwashing effect is good, and the normal operation of the equipment is not affected.

The rotating mechanism includes a fixed bracket 3, a backwash sleeve 7 and a backwash water distribution pipe 8. The fixed bracket 3 is arranged on the upper end of the filter screen support frame 1 or above the filter screen support frame 1. The flushing device 5 is arranged on the fixed bracket 3, one end of the backwash sleeve 7 is connected to the water outlet of the backwash water inlet pipe 6, and the other end of the backwash sleeve 7 is connected to the backwash water distribution pipe 8. The backwashing water distribution pipe 8 is self-rotating and fitted in the other end of the backwashing sleeve 7, the upper end of the backwashing water outlet pipe 9 communicates with the backwashing water distribution pipe 8, and the lower end of the backwashing water outlet pipe 9 connects from the filter screen support frame The upper end of 1 extends to the lower end of the filter screen support frame 1, and the side of the lower end of the backwash outlet pipe 9 is provided with several openings 2, and the openings 2 face the filter screen 14, and the backwashing device 5 includes a backwash water inlet pipe 6. The backwash sleeve 7, the backwash water distribution pipe 8 and at least two backwash outlet pipes 9, the backwash sleeve 7 is connected to the backwash water inlet pipe 6 and the backwash water distribution pipe 8, so that the backwash water distribution pipe 8 rotates and rotates Cooperate on the backwash sleeve 7. In the process of backwashing, the water inlet end of the backwashing water inlet pipe 6 is connected to the water pump, and the backwashing water flows through the backwashing sleeve 7, the backwashing water distribution pipe 8 and the backwashing water outlet pipe 9 in turn, and then flows from the backwashing water outlet pipe 9 The opening 2 is sprayed onto the filter screen 14 at a certain angle, so that the backwashing water outlet pipe 9 and the backwashing water distribution pipe 8 are automatically rotated under the force of the water spray, and the backwashing device 5 can perform all-round cleaning on the filter screen 14. For backwashing, there is no need to add an additional motor to drive the backwashing water distribution pipe 8 to rotate, the control system has low requirements, the backwashing effect is good, and the normal operation of the equipment is not affected. The filter screen 14 is cylindrical and adopts micropores of 20-400 mesh/square inch Sieve, can choose 100, 200 and 300 mesh/square inch, preferably adopt the microporous screen of 200 mesh/square inch as filter mesh 14, filter mesh support frame 1 is positioned at the inner side of filter mesh 14, plays a support to filter mesh 14 and fixation.

The backwash sleeve 7 is provided with a first through hole 16 along the axial direction of the backwash sleeve 7, and one end of the backwash sleeve 7 near the backwash water distribution pipe 8 is provided with a second through hole 17. The diameter of the second through hole 17 is smaller than the diameter of the first through hole 16, and one end of the backwash water distribution pipe 8 near the backwash sleeve 7 is provided with a protrusion 18 protruding from the end of the backwash sleeve 7. The protrusion 18 extends into the first through hole 16 through the second through hole 17, and the end of the protrusion 18 located at the first through hole 16 is provided with a sealing ring 19, and the sealing ring 19 overlaps the first through hole 16. A through hole 16 is close to the surface of the second through hole 17, and the structure is simple, so that the backwash water distribution pipe 8 can rotate and be fitted in the backwash sleeve 7, and the sealing ring 19 is a metal sealing ring to ensure that water will not flow from the protrusion 18. There is seepage between the outer surface and the inner surface of the second through hole 17, and the reliability is high. Due to the existence of the sealing ring 19, all the backwash water entering the cavity of the backwash sleeve 7 from the backwash water inlet pipe 6 enters the backwash Water distribution pipe 8.

The backwash water outlet pipe 9 includes a backwash water outlet horizontal pipe 10 parallel to the horizontal plane and a backwash water outlet vertical pipe 11 perpendicular to the horizontal plane. The backwash water outlet horizontal pipe 10 is located at the upper end of the filter screen support frame 1. One end of the backwash water outlet horizontal pipe 10 is communicated with the backwash water distribution pipe 8, the upper end of the backwash water outlet vertical pipe 11 is connected with the other end of the backwash water outlet horizontal pipe 10, and the backwash water outlet vertical pipe 11 lower end extends to the filter At the lower end of the net support frame 1, the openings 2 are arranged on the backwash water outlet vertical pipe 11, and the positions of the openings 2 on the adjacent backwash water outlet vertical pipes 11 are staggered from each other, the structure is simple, and the opening 2 is convenient to be set. The effect is good, the backwashing water distribution pipe 8 is detachably connected with the backwashing water outlet pipe 9, and the backwashing water distribution pipe 8 and the backwashing water outlet pipe 9 are connected by a joint, which is convenient for the installation and disassembly of the backwashing device, and the adjacent backwashing outlet The positions of the openings 2 on the water pipe standpipe 11 are staggered from each other, so as to ensure that different parts of the entire filter screen 14 can be washed clean by backwash water, and prevent pollutants from clogging the filter screen 14. The mutual staggering means that two adjacent backwash outlet pipes The openings 2 on the standpipe 11 are not on the same horizontal plane.

The opening 2 is provided with a universal joint nozzle 27, the nozzle can rotate around the axis of the backwash sleeve 7 under the thrust of the water, the backwash effect is good, and the installation of the nozzle can effectively improve the flushing of the backwash water to the filter screen 14 Intensity and nozzle injection direction can be adjusted more flexibly, and the backwashing effect on the filter screen 14 is better.

The backwash outlet standpipe 11 is located inside the filter screen support frame 1, and the fixed bracket 3 is fixed on the upper end of the filter screen support frame 1. This is the first embodiment. The water to be filtered flows from the filter screen support frame. 1 enters from the outside, enters the outside of the filter screen support frame 1 after filtering through the filter screen 14, and then flows out from the bottom 1 of the filter screen support frame.

The backwash outlet vertical pipe 11 is located outside the filter screen support frame 1, and the described fixing bracket 3 is located above the filter screen support frame 1. This is the second embodiment. The water to be filtered directly flows from the filter screen support frame. 1 enters the filter screen support frame 1 at the bottom, flows out from the filter screen support frame 1 after filtering through the filter screen 14.

It also includes a bottom plate 4, the bottom plate 4 is arranged at the bottom of the screen support frame 1, and the bottom plate 4 is provided with a water outlet 12 to facilitate the discharge of filtered water or filtered impurities.

The number of the backwash outlet pipes 9 is four, and the backwash outlet pipes 9 are evenly distributed along the circumference of the screen support frame 1, and the backwash effect is good.

It also includes a bottom plate 4, the bottom plate 4 is arranged at the bottom of the screen support frame 1, and the bottom plate 4 is provided with a water outlet 12 to facilitate the discharge of filtered water or filtered impurities.

The axis of the opening 2 forms an included angle with the upper surface of the filter screen support frame 1, and the included angle is 0° to 90°, and the included angle can be 30°, 45° and 60°, and the included angle is inversely The angle formed by the direction of the hole 2 of the backwash vertical pipe 11 and the center line of the backwash water outlet horizontal pipe 10 is 30°. °, the openings 2 of the four backwash vertical pipes 11 have the same orientation, so that when the backwash water is sprayed from the openings 2, in addition to washing the filter screen 14, it also provides a rotating power for the backwashing device, thereby continuously The net is subjected to hydraulic flushing to prevent pollutants from clogging the filter screen 14, and to improve the filtering effect of the vertical filter.

A microfiltration and sedimentation integrated machine, comprising a housing 13, a water inlet 20, a water outlet 21, a sewage outlet 22, and a microfiltration machine with a backwashing device according to any one of claims 1-7, the filter The net support frame 1 is arranged in the middle and upper part of the housing 13, the space between the housing 13 and the filter screen support frame 1 forms a cavity 15, and the water inlet 20, the water outlet 21 and the sewage outlet 22 are all provided On the outer wall of the housing 13, the cavity 15 is provided with a sedimentation and filtration integrated mechanism, which can simultaneously carry out sedimentation and filtration in the housing 13, and the water to be filtered enters the housing 13 from the water inlet 20 for filtration and precipitation. The filtered water is discharged from the water outlet 21, and the impurities in the sewage are discharged from the sewage outlet 22 through the backwashing device.

The integrated sedimentation and filtration mechanism means that the lower end of the cavity 15 is provided with a sedimentation area 26, the water inlet 20 communicates with the upper end of the cavity 15, and the water outlet 21 and the water outlet 12 are provided with a water outlet pipe 28, The water outlet 21 communicates with the water outlet 12 through the water outlet pipe 28, and the sewage outlet 22 and the sedimentation area 26 are provided with a sewage pipe 23, and the sewage enters the cavity 15 through the water inlet 20, and most of the sewage in the sewage Solid particles or suspended solids are first precipitated and separated in the sedimentation area 26 at the lower part of the cavity 15 due to gravity, and gather at the bottom of the sedimentation area 26, and are regularly discharged from the integrated equipment through the sewage pipe 23 from the sewage outlet 22. The solid particles or suspended solids in the sewage that have not been separated by precipitation rise to the middle and upper part of the cavity with the direction of water flow, and are intercepted outside the vertical microfilter through the interception effect of the filter screen 14 of the vertical microfilter. The water enters the inside of the vertical microfilter, and is discharged from the water outlet 21 on the housing 13 through the water outlet 12 of the vertical microfilter. Sewage enters the integrated microfiltration and sedimentation equipment for sedimentation and separation first, which can effectively reduce the filtration load of the subsequent vertical microfiltration machine, and can effectively alleviate the problem that the filter screen 14 of the vertical microfiltration machine is easy to block. In addition, because the sewage after precipitation is still Filtration treatment is required, so the requirements for the removal of suspended matter in the sedimentation zone 26 are not high, and the surface load of the sedimentation zone 26 is designed to be relatively large, thereby effectively reducing the floor area of the equipment. Moreover, the sewage undergoes dual functions of sedimentation and microfiltration, the SS in the effluent is very low, and the effluent effect is good. This is the integrated microfiltration and sedimentation machine made by the first embodiment. The sedimentation area 26 is an inverted conical or inverted trapezoidal structure. The bottom plate 4 is sealed and connected with the filter screen 14 and the filter screen support frame 1, so as to facilitate the discharge of filtered water.

The integrated mechanism of sedimentation and filtration means that the lower end of the filter screen support frame 1 is provided with a sedimentation cover 24, and the sedimentation cover 24 is connected with the water outlet 12, and a sewage discharge pipe is arranged between the sewage outlet 22 and the bottom of the sedimentation cover 24 23. A water inlet pipe 25 is provided between the water inlet 20 and the filter support frame 1, and the water outlet 21 communicates with the cavity 15, and the sewage enters the vertical microfiltration machine through the water inlet 20 and the water inlet pipe 25 The lower part of the sewage, most of the solid particles or suspended matter in the sewage are precipitated and separated in the sedimentation cover 24 at the bottom of the vertical microfiltration machine due to gravity, and gather at the bottom of the sedimentation cover 24, and regularly pass through the sewage pipe 23 from the sewage outlet 22 Discharge integrated equipment. The solid particles or suspended matter in the sewage that have not been separated by precipitation rise to the upper part of the vertical microfilter with the direction of water flow, and are intercepted in the vertical microfilter through the interception effect of the filter screen 14 of the vertical microfilter. , the clean water enters the cavity (clear water area) through the filter screen 14, and is discharged from the water outlet 21 on the housing 13. This is the integrated microfiltration and sedimentation machine made by the second embodiment, and the sedimentation cover 24 is an inverted With a conical or inverted trapezoidal structure, the sedimentation cover 24 is conducive to the natural sedimentation and discharge of the backwashed pollutants.

Specifically, the principle of the present invention is that the placement direction of the filter screen 14 is perpendicular to the horizontal plane, that is, the filter screen 14 of the microfilter is placed vertically. When the vertical microfilter is working, the filter screen 14 of the whole vertical microfilter is almost completely immersed in the water to be treated (only the upper 10mm-200mm height part needs to be exposed to the water surface), so when using the same area of the filter screen, immediately The filter area of the type filter is larger than that of the horizontal drum filter, and the amount of treated water is also large. And because the filter screen 14 is vertical, the filter area can be increased by increasing the height of the filter screen 14 of the vertical microfilter without increasing the occupied area. But for the horizontal drum microfilter, it can only be extended from the length direction, so the vertical microfilter of the present invention has a smaller footprint and better filtering effect. Simultaneously because backwash outlet pipe 9 and backwash water inlet pipe 6 are provided with the rotation mechanism that makes backwash outlet pipe 9 lower ends automatically rotate around the filter screen support frame circumference, makes backwash outlet pipe 9 need not additionally be provided with motor and just can rotate , the filter screen 14 is backwashed, the control system has low requirements, good filtering effect, good backwashing effect and does not affect the normal operation of the equipment, the placement direction of the filter screen 14 is perpendicular to the horizontal plane, and the fixed bracket 3 is located on the filter screen The upper end of the support frame 1.

In the first embodiment, the integrated microfiltration and sedimentation machine includes a housing 13 , a microfiltration machine with a backwashing device, a cavity 15 , a water inlet 20 , a water outlet 21 and a sewage outlet 22 . The housing 13 can be a cylinder, a cube or a polyhedron. In this embodiment, the housing 13 is a cube, and the vertical microfilter is placed in the middle and upper part of the housing 13. The space constitutes the cavity 15. In this embodiment, the cavity 15 is a clear water area, and the water inlet 20, the water outlet 21 and the sewage outlet 22 are respectively located on the housing, and the water inlet 20, the water outlet 21 and the sewage outlet 22 are located at the bottom of the housing 13. The lower part of the microfilter is a sedimentation cover 24 (consisting of the bottom plate of the vertical microfilter and the lower space of the vertical microfilter), the water inlet 20 is connected with the vertical microfilter through the water inlet pipe 25, and the sewage outlet 22 is connected with the vertical microfilter through the sewage pipe 23. The precipitation cover 24 is connected, the water outlet 21 communicates with the cavity 15, the backwash outlet pipe 9 is located outside the filter screen 14, and the fixed bracket 3 is fixed on the upper end of the filter screen support frame 1.

The working principle of the vertical microfilter in Example 1 is: the treated water first enters the chamber of the vertical microfilter (in the filter screen support frame 1), and then the solid pollutants are intercepted by the filter screen 14 and remain in the chamber of the vertical microfilter Inside, the filtered water passes through the filter screen 14 and is discharged from the vertical microfiltration machine, and enters the clear water area (the cavity 15 of the microfiltration and sedimentation integrated machine) for temporary storage. Wherein, a part of the filtered water is transported to the backwash water inlet pipe 6 through the circulating pump, and then passes through the backwash sleeve 7, the backwash water distribution pipe 8, the backwash water outlet horizontal pipe 10 and the backwash water outlet vertical pipe 11, and the backwash water outlet The opening 2 of the standpipe 11 sprays out to wash the filter screen 14 . Since the sprayed water forms a certain angle to drive the backwashing device to rotate, the filter screen 14 can be continuously flushed to prevent pollutants from clogging the filter screen 14 and improve the filtering effect of the vertical filter.

In the second embodiment, the integrated microfiltration and sedimentation machine includes a housing 13 , a microfiltration machine with a backwashing device, a cavity 15 , a water inlet 20 , a water outlet 21 and a sewage outlet 22 . The housing 13 can be a cylinder, a cube or a polyhedron. In this embodiment, the housing 13 is a cylinder, and the vertical microfilter is placed in the upper middle part of the housing 13. Between the housing 13 and the vertical microfiltration The space between constitutes the cavity 15. In this embodiment, the cavity 15 is the water inlet and sedimentation area, the water inlet 20, the water outlet 21 and the sewage outlet 22 are respectively located on the housing 13, the water inlet 20 and the water outlet 21 are located in the middle and upper part of the housing 13, and the sewage outlet 22 is located at the bottom of the housing 13, the backwash outlet pipe 9 is located inside the filter screen 14, and the fixing bracket 3 is located on the top of the vertical microfilter for installation and fixing of the vertical microfilter. Thus, the vertical microfilter can be fixed on the treated pool, fish pond or pond by the fixed bracket 3 through bolts or welding, and the sedimentation area 26 is a mud bucket structure, which is conducive to the settlement of solid particles or suspended matter in the incoming water and collect.

The working principle of the vertical microfiltration machine in the present embodiment 2 is: the treated water enters the vertical microfiltration machine from the outside of the filter screen 14, and through the filtering effect of the filter screen 14, solid pollutants are intercepted outside the filter screen 14, The filtered water enters the vertical microfilter and is discharged through the water outlet 12 and the water outlet 21. Wherein, a part of the filtered water is transported to the backwash water inlet pipe 6 through the circulating pump, and then passes through the backwash sleeve 7, the backwash water distribution pipe 8, the backwash water outlet horizontal pipe 10 and the backwash water outlet vertical pipe 11, and the backwash water outlet Spray out from the opening 2 or the nozzle of the standpipe 11 to wash the filter screen 14 . Since the sprayed water forms a certain angle to drive the backwashing device to rotate, the filter screen 14 can be continuously flushed to prevent pollutants from clogging the filter screen 14 and improve the filtering effect of the vertical filter. The vertical microfiltration machine of the present invention only needs one backwash water inlet power (such as a circulating water pump) to continuously and automatically backwash without other control measures, is convenient to operate, requires less electrical equipment, and saves operating costs.

The present invention is not limited to the above-mentioned embodiments, if the various changes or deformations of the present invention do not depart from the spirit and scope of the present invention, if these changes and deformations belong to the claims of the present invention and the equivalent technical scope, then the present invention is also It is intended that such modifications and variations are included.

Claims (10)

1. a kind of Microfilter with back purge system, it includes screen support frame (1) and back purge system with strainer (14) (5), the back purge system (5) includes backwash water inlet pipe (6) and at least two backwashes outlet pipe (9), and described is anti- The water outlet for rinsing water inlet pipe (6) is connected to backwash outlet pipe (9) upper end, backwash outlet pipe (9) the lower end edge filter Net support frame (1) circle distribution, it is characterised in that: the strainer (14) is vertical setting, the backwash outlet pipe (9) Being equipped between backwash water inlet pipe (6) makes to backwash outlet pipe (9) lower end turns around screen support frame (1) circular-rotation automatically Motivation structure.

2. a kind of Microfilter with back purge system according to claim 1, it is characterised in that: the rotating mechanism packet It includes fixed bracket (3), backwash sleeve (7) and backwash sparge pipe (8), the fixation bracket (3) and is located at screen support frame (1) upper end or the top positioned at screen support frame (1), the back purge system (5) is located on fixed bracket (3), described Backwash sleeve (7) one end with backwash water inlet pipe (6) water outlet connect, backwash sleeve (7) other end with instead Sparge pipe (8) connection is rinsed, backwash sparge pipe (8) the autorotation cooperation is described in backwash sleeve (7) other end Backwash outlet pipe (9) upper end be connected to backwash sparge pipe (8), backwash outlet pipe (9) lower end is from strainer branch Support (1) upper end extends to screen support frame (1) lower end, and the side of described backwash outlet pipe (9) lower end is equipped with several Aperture (2), the aperture (2) is towards strainer (14).

3. a kind of Microfilter with back purge system according to claim 2, it is characterised in that: the backwash sleeve (7) first through hole (16) are equipped with along backwash sleeve (7) axis direction in, the backwash sleeve (7) closely backwashes water distribution The one end for managing (8) is equipped with the second through-hole (17), and the second through-hole (17) diameter is less than first through hole (16) diameter, described One end that backwash sparge pipe (8) closely backwashes sleeve (7) is equipped with the protrusion (18) for protruding from backwash sleeve (7) end, institute The protrusion (18) stated is put in first through hole (16) by the second through-hole (17), and the protrusion (18) is located at first through hole (16) End be equipped with sealing ring (19), the sealing ring (19) is overlapped on the surface of nearly second through-hole (17) of first through hole (16).

4. a kind of Microfilter with back purge system according to claim 2, it is characterised in that: the backwash water outlet Pipe (9) includes backwash water outlet transverse tube (10) being parallel to the horizontal plane and is discharged vertical tube (11) with the backwash of horizontal plane, Described backwash water outlet transverse tube (10) is located at screen support frame (1) upper end, described backwash water outlet transverse tube (10) one end and Sparge pipe (8) connection is backwashed, backwash water outlet vertical tube (11) upper end and backwash water outlet transverse tube (10) other end connect Logical, screen support frame (1) lower end is stretched in described backwash water outlet vertical tube (11) lower end, and the aperture (2) is located at backwash It is discharged on vertical tube (11), aperture (2) position on adjacent backwash water outlet vertical tube (11) mutually staggers.

5. a kind of Microfilter with back purge system according to claim 4, it is characterised in that: the backwash water outlet Vertical tube (11) is located on the inside of screen support frame (1), and the fixation bracket (3) is fixed on the upper end of screen support frame (1).

6. a kind of Microfilter with back purge system according to claim 4, it is characterised in that: the backwash water outlet Vertical tube (11) is located on the outside of screen support frame (1), and the fixation bracket (3) is located at the top of screen support frame (1).

7. a kind of Microfilter with back purge system according to claim 1, it is characterised in that: it further includes bottom plate (4), The bottom plate (4) is located at screen support frame (1) bottom, and the bottom plate (4) was equipped with the mouth of a river (12).

8. a kind of micro-filtration precipitates all-in-one machine, it is characterised in that: including shell (13), water inlet (20), water outlet (21), sewage draining exit (22) and a kind of Microfilter with back purge system as claimed in claim 1 to 7, the screen support frame (1) are located at shell In body (13) middle and upper part, the space between the shell (13) and screen support frame (1) constitutes cavity (15), the water inlet Mouth (20), water outlet (21) and sewage draining exit (22) are each provided on shell (13) outer wall, are equipped with and are precipitated in the cavity (15) Filter integral mechanism.

9. a kind of micro-filtration according to claim 8 precipitates all-in-one machine, it is characterised in that: the deposition filtration integrated machine structure Refer to that cavity (15) lower end is equipped with settling zone (26), the water inlet (20) is connected to cavity (15) upper end, the water outlet Mouthful (21) and cross between the mouth of a river (12) and be equipped with outlet pipe (28), the water outlet (21) by outlet pipe (28) with the mouth of a river (12) it is connected to, is equipped with sewage pipe (23) between the sewage draining exit (22) and settling zone (26).

10. a kind of micro-filtration according to claim 8 precipitates all-in-one machine, it is characterised in that: the deposition filtration integrated machine Structure refers to that screen support frame (1) lower end is equipped with precipitating cover (24), and the precipitating cover (24) is connected to the mouth of a river (12) are crossed, described Sewage pipe (23) are equipped between sewage draining exit (22) and precipitating cover (24) bottom, the water inlet (20) and screen support frame (1) Between be equipped with water inlet pipe (25), the water outlet (21) is connected to cavity (15).