CN115417562B - Device for recycling and purifying construction sewage - Google Patents

Abstract

The invention relates to the technical field of sewage treatment, in particular to a device for recycling and purifying sewage in building construction. The invention provides a device with multiple filtering functions for recycling and purifying construction sewage. The utility model provides a construction sewage circulation purification treatment's device, including the protecting crust, the filter, wooden activated carbon plate, biological growth frame and pumping mechanism etc. the inside upside fixedly connected with of protecting crust is used for filtering the filter of building mud granule, fixedly connected with is used for adsorbing the wooden activated carbon plate of harmful substance in the middle of the protecting crust is inside, the filter is located wooden activated carbon plate top, the inside downside fixedly connected with of protecting crust is used for providing biological growth frame that biological algae is grown, the protecting crust lower part is equipped with and is used for extracting filterable pumping mechanism with sewage secondary. The invention can realize multiple filtration and purification of the building construction sewage by the joint coordination of the filter plate, the wooden activated carbon plate and the biological growth frame, and finally improves the utilization rate of water resources.

Description

Device for recycling and purifying construction sewage

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a device for recycling and purifying sewage in building construction.

Background

The building construction sewage refers to sewage, maintenance water, domestic wastewater of constructors and the like generated during construction process operation. The sewage generated in the construction process generally contains a large amount of granular impurities, sediment and the like, and if the sewage is discharged at will, the surrounding environment is greatly influenced, so that the sewage is purified by using a purifying device aiming at the construction sewage, and the discharge requirement is met.

The utility model discloses a building sewage recovery purifier that publication number is CN207774916U at present, the device includes settling chamber, clean room and shell, settling chamber left side upper end is equipped with the inlet tube, the inlet tube below is equipped with the filter screen, and the filter screen is fixed connection with the shell, filter screen left side below fixedly connected with slide bar, the slide bar bottom is equipped with hydraulic telescoping device, the lower extreme left side of slide bar is equipped with high-pressure nozzle, high-pressure nozzle left end central point puts the fixed water pipe that is equipped with, and high-pressure nozzle passes through the water pipe and is connected with the clean room, the water pump is connected with the wet return through first check valve, clean room inboard top is equipped with the purification membrane, terminal surface right side is equipped with the water level monitor under the purification membrane, and water level monitor is fixed connection with the shell, through the bayonet socket that sets up, can effectually reduce the precipitate in the settling chamber and get into the water pump mouth, has huge economic benefits and extensive market prospect, is worth using widely. However, the above device has the following problems:

the device is only carried out in a precipitation and ultraviolet disinfection mode when the device is used for treating building sewage, and the device is not used for carrying out filtration treatment on the building sewage in various modes, and the precipitation mode needs a long time, so that ultraviolet disinfection is difficult to permeate into the sewage, and the purification and filtration effects are difficult to ensure.

For the above reasons, it is required to design a device for the cyclic purification treatment of construction wastewater having multiple filtration functions.

Disclosure of Invention

The invention provides a device for circularly purifying and treating construction sewage with multiple filtering functions, which aims to overcome the defect that the existing construction sewage purifying device only adopts a precipitation and ultraviolet disinfection mode to ensure the purifying and filtering effects when the construction sewage is treated.

The technical proposal is as follows: the utility model provides a building construction sewage circulation purification treatment's device, including the protecting crust, the filter, wooden activated carbon plate, biological growth frame, go out the water pump, inlet tube and pumping mechanism, the inside upside fixedly connected with of protecting crust is used for filtering the filter of building mud granule, fixedly connected with is used for adsorbing the wooden activated carbon plate of harmful substance in the middle of the protecting crust is inside, it has a plurality of filter slot holes to open on the wooden activated carbon plate, the filter is located wooden activated carbon plate top, the inside downside fixedly connected with of protecting crust is used for providing biological growth frame that biological algae grows, protecting crust lower part fixedly connected with goes out the water pump, go out water pump inlet tube and stretch into inside the protecting crust, protecting crust upper portion fixedly connected with inlet tube, inlet tube and the inside intercommunication of protecting crust, protecting crust lower part is equipped with and is used for extracting filterable pumping mechanism with sewage secondary.

Preferably, the pumping mechanism comprises a conveying pipe, a conveying pump and a filter screen, wherein the lower part of the protective shell is fixedly connected with a plurality of conveying pipes, the conveying pipes extend into the protective shell, the conveying pipes are hard pipes, each conveying pipe is fixedly connected with the conveying pump, one end of each conveying pipe extending into the protective shell is fixedly connected with the filter screen for preventing biological algae from being extracted, the outlet of each conveying pump output pipe extends into the protective shell, and the outlet of each conveying pump output pipe is located above the wooden activated carbon plate.

Preferably, the device further comprises a conveying mechanism, the conveying mechanism comprises a partition plate, a motor, a rotating shaft, a conveying belt and a spring piece, the partition plate used for blocking large particle impurities from falling from a gap is fixedly connected to the upper side inside the protective shell, the motor is sealed between the partition plate and the protective shell by the partition plate, the rotating shaft is fixedly connected to an output shaft of the motor through a shaft coupling, the rotating shaft is rotatably connected to the upper portion inside the protective shell, the conveying belt is sleeved on the two rotating shafts, the conveying belt is fixedly connected with a plurality of bumps used for pushing large particle wastes, the conveying belt is located between the two partition plates, and the spring piece used for preventing the large particle impurities from falling from the gap between the conveying belt and the protective shell is fixedly connected to one side, away from the motor, of the upper portion inside the protective shell.

Preferably, the scraper comprises a scraper, tension springs, pushing rods and pushing blocks, the scraper is connected with the scraper in a sliding mode inside the protective shell and located above the filter plate, a plurality of tension springs are connected between the scraper and the inside of the protective shell, two pushing rods are fixedly connected to the top of the scraper, the pushing blocks are fixedly connected to the two sides of the conveying belt, the pushing blocks can push the corresponding pushing rods to slide when located on the upper side of the conveying belt, and square holes for the pushing blocks to pass through are formed in the two pushing rods.

Preferably, the sewage treatment device further comprises a material blocking mechanism, wherein the material blocking mechanism comprises guide rods, baffle plates and return springs, a plurality of guide rods are fixedly connected to one side surface, away from the extension springs, of the outer portion of the protective shell, the baffle plates used for blocking sewage from flowing out are connected between the guide rods in a sliding mode, the return springs are connected between the baffle plates and the guide rods, and the return springs are sleeved on the similar guide rods.

Preferably, the device further comprises a collecting mechanism, the collecting mechanism comprises a collecting frame, an anion plate and a return pipe, a collecting frame used for collecting sewage particles is fixedly connected to one side face, close to the guide rod, of the outer portion of the protective shell, the collecting frame is located below the guide rod, the anion plate used for filtering sewage is fixedly connected to the lower portion of the collecting frame, and the return pipe used for enabling filtered sewage to flow back is fixedly connected to the bottom of the collecting frame.

Preferably, the protective shell also comprises a square cover plate, and the middle part of the protective shell is covered with the square cover plate.

Preferably, the LED plant growing lamp is also included, and the LED plant growing lamp is fixedly connected inside the protective shell.

The beneficial effects of the invention are as follows: 1. the invention can realize multiple filtration and purification of the building construction sewage by the joint coordination of the filter plate, the wooden activated carbon plate and the biological growth frame, and finally improves the utilization rate of water resources.

2. The invention can realize the circulating filtration and purification of the construction sewage under the action of the delivery pump, and improve the purification efficiency of the construction sewage.

3. According to the invention, large-particle impurities in the construction sewage can be filtered out in advance through the conveyer belt, so that the pressure of subsequent sewage filtration is reduced.

4. The invention can scrape the sewage and impurities on the filter plate under the action of the scraper plate, and ensures that the filter plate is not blocked by the impurities under the condition of long-time use.

5. According to the invention, the sewage impurities can be collected through the collecting frame, so that the sewage impurities are prevented from flowing to pollute the surrounding environment.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial cross-sectional view of the present invention.

Fig. 3 is a schematic perspective view of a pumping mechanism according to the present invention.

Fig. 4 is a schematic perspective view of a pumping mechanism according to the present invention.

Fig. 5 is a schematic perspective view of a first part of the conveying mechanism according to the present invention.

Fig. 6 is a schematic perspective view of a second part of the conveying mechanism of the present invention.

Fig. 7 is a schematic view showing a first perspective structure of the scraping mechanism of the present invention.

Fig. 8 is a schematic view showing a second perspective structure of the scraping mechanism of the present invention.

Fig. 9 is a schematic perspective view of a dam mechanism according to the present invention.

Fig. 10 is a schematic view of the operation of the scraping mechanism of the present invention.

Fig. 11 is a schematic perspective view of a collecting mechanism according to the present invention.

FIG. 12 is a schematic view of a partially cut-away structure of the collection mechanism of the present invention.

Reference numerals illustrate: 1_protective shell, 2_filter plate, 3_wooden activated carbon plate, 4_biological growth frame, 5_water outlet pump, 6_water inlet pipe, 7_pumping mechanism, 70_conveying pipe, 71_conveying pump, 72_filter screen, 8_conveying mechanism, 80_partition plate, 81_motor, 82_rotating shaft, 83_conveying belt, 84_spring piece, 9_scraping mechanism, 90_scraper, 91_extension spring, 92_push rod, 93_push block, 94_square hole, 10_blocking mechanism, 100_guide rod, 101_baffle, 102_reset spring, 11_collecting mechanism, 110_collecting frame, 111_anion plate, 112_return pipe, 12_square cover plate, 13_led plant growth lamp.

Detailed Description

The following description is of the preferred embodiments of the invention, and is not intended to limit the scope of the invention.

Example 1

The utility model provides a building construction sewage circulation purification treatment's device, refer to fig. 1 and 2, including protecting crust 1, filter 2, wooden activated carbon plate 3, biological growth frame 4, go out water pump 5, inlet tube 6 and pumping mechanism 7, the inside upside fixedly connected with of protecting crust 1 is used for filtering the filter 2 of building mud granule, fixedly connected with is used for adsorbing the wooden activated carbon plate 3 of harmful substance in the middle of the inside of protecting crust 1, open on the wooden activated carbon plate 3 has a plurality of filtration slot holes, filter 2 is located wooden activated carbon plate 3 top, the inside downside fixedly connected with of protecting crust 1 is used for providing biological growth frame 4 that biological algae grows, the left lower part front side fixedly connected with of protecting crust 1 goes out water pump 5, go out water pump 5 water pipe and stretch into inside the protecting crust 1, protecting crust 1 upper portion right side fixedly connected with two inlet tubes 6, inlet tube 6 and protecting crust 1 inside intercommunication, protecting crust 1 lower part left and right sides are equipped with pumping mechanism 7 that is used for extracting the filtration with sewage secondary.

The construction sewage refers to the sewage generated in construction of the building, the interior of the construction sewage contains particle waste and industrial sewage in the building, if the direct discharge of the construction sewage can cause great influence on the environment, so when the device is required to be used for purifying the construction sewage, a building sewage discharge pipe is communicated with a water inlet pipe 6 at first, the construction sewage is injected into the upper part in a protective shell 1 through the water inlet pipe 6, the sewage entering the protective shell 1 falls on a filter plate 2, the construction sewage is filtered under the action of the filter plate 2, the filtered sewage flows onto a wooden activated carbon plate 3, and then harmful substances in the sewage can be adsorbed under the adsorption action of the wooden activated carbon plate 3, the harmful substances comprise but are not limited to ketones, alcohols, tetrahydrofuran, dichloromethane, trichloromethane and the like, and then the sewage flows onto a biological growth frame 4 from a filtering slot hole on the wooden activated carbon plate 3, and flows from the biological growth frame 4 to the inner lower part of the protective shell 1, after construction sewage flows to the inner lower part of the protective shell 1, the construction sewage is kept still in the inner lower part of the protective shell 1 for a period of time, biological algae on the biological growth frame 4 can purify the construction sewage so as to achieve the effect of purifying the sewage, simultaneously, the purified sewage can be pumped to the wooden activated carbon plate 3 by the pumping mechanism 7 so as to carry out secondary or even repeated filtration purification, and the cooperation of the filter plate 2, the wooden activated carbon plate 3 and the biological growth frame 4 can realize multiple filtration purification of the construction sewage so as to ensure more thorough purification treatment, after the sewage is purified under the purification action of biological algae, the water pump 5 can be started to pump the purified water, the purified water can be used in other places, so far, the device realizes the circulating purification treatment of the construction sewage under the action of the device, and improves the utilization rate of water resources.

Referring to fig. 1-4, the pumping mechanism 7 comprises a conveying pipe 70, conveying pumps 71 and a filter screen 72, the conveying pipes 70 are symmetrically and fixedly connected on the left side and the right side of the protective shell 1, the conveying pipes 70 extend into the protective shell 1, the conveying pipes 70 are hard pipes, the conveying pumps 71 are fixedly connected on the upper portion of each conveying pipe 70, the filter screen 72 for preventing biological algae from being pumped is fixedly connected to one end of each conveying pipe 70 extending into the protective shell 1, the outlet of each conveying pump 71 output pipe extends into the middle position inside the protective shell 1, and the outlet of each conveying pump 71 output pipe is located above the wooden activated carbon plate 3.

When the construction sewage is located at the inner lower part of the protective shell 1 and purified by biological algae, the conveying pump 71 can be started to ensure complete filtration of the sewage, so that the sewage at the inner lower part of the protective shell 1 is conveyed into the output pipe of the conveying pump 71 through the conveying pipe 70, and the biological algae can be prevented from flowing out of the conveying pipe 70 under the action of the filter screen 72, after the sewage is conveyed into the output pipe of the conveying pump 71 through the conveying pipe 70, the sewage flows onto the wooden activated carbon plate 3 from the output pipe outlet of the conveying pump 71, and then flows back to the inner lower part of the protective shell 1 under the secondary filtration of the wooden activated carbon plate 3, so that the sewage can be filtered repeatedly under the action of the conveying pump 71, and the sewage purification efficiency is improved.

Example 2

On the basis of embodiment 1, refer to fig. 1, fig. 2, fig. 5 and fig. 6, still including conveying mechanism 8, conveying mechanism 8 is including baffle 80, motor 81, axis of rotation 82, conveyer belt 83 and spring leaf 84, baffle 80 that is used for stopping big granule impurity to drop from two gaps around the inside upside of shield shell 1 is all fixedly connected with, the inside upside fixedly connected with motor 81 in shield shell 1, through shaft coupling fixedly connected with axis of rotation 82 on the motor 81 output shaft, also rotationally be connected with axis of rotation 82 between the upper portion front and back both sides in the shield shell 1, the cover has conveyer belt 83 on two axes of rotation 82, fixedly connected with is a plurality of lugs that are used for propelling movement big granule waste material on the conveyer belt 83, conveyer belt 83 is located between two baffles 80, fixedly connected with is used for preventing big granule impurity from dropping from conveyer belt 83 left side on the upper portion left side in the shield shell 1.

When using inlet tube 6 to pour into construction sewage into purification treatment in the protecting crust 1, the construction sewage of pouring into will be in contact with conveyer belt 83 when getting into in the protecting crust 1, afterwards start motor 81, motor 81 output shaft drives the axis of rotation 82 that it is connected, and then drive conveyer belt 83 and the axis of rotation 82 of opposite side and rotate, and can guarantee under the combined action of spring leaf 84 and baffle 80 that construction sewage can not follow conveyer belt 83 front and back both sides and left side hourglass, guarantee the filter effect of sewage, when the lug on conveyer belt 83 rotates along with conveyer belt 83, will promote great construction waste particle in the sewage to the protecting crust 1 outside, so can carry out preliminary screening to sewage, in advance select great particle in the sewage, promote follow-up purification treatment's efficiency, simultaneously when conveyer belt 83 carries the particle in the sewage, sewage will flow down from conveyer belt 83's clearance, make the sewage of preliminary filtration flow to filter 2 on, be convenient for follow-up sewage purification, when no longer carrying construction sewage to inside the protecting crust 1, shut down motor 81, then to the inside the protecting crust 1 can.

Referring to fig. 2, fig. 7, fig. 8, fig. 9 and fig. 10, the scraper mechanism 9 is further included, the scraper blade 90 is included in the scraper mechanism 9, tension springs 91, push rods 92 and push blocks 93, the scraper blade 90 is connected with the scraper blade 90 in a sliding mode in the middle of the inside of the protective shell 1, the scraper blade 90 is located above the filter plate 2, tension springs 91 are connected between the front side and the rear side of the left side of the scraper blade 90 and the inside of the protective shell 1, the push rods 92 are fixedly connected to the front side and the rear side of the top of the scraper blade 90, the push blocks 93 are fixedly connected to the front side and the rear side of the conveying belt 83, the push rods 92 can be pushed to slide when the push blocks 93 are located on the upper side of the conveying belt 83, and square holes for the push blocks 93 to pass are formed in the lower sides of the two push rods 92.

Referring to fig. 1, 2 and 9, the sewage treatment device further comprises a material blocking mechanism 10, wherein the material blocking mechanism 10 comprises guide rods 100, baffle plates 101 and return springs 102, the guide rods 100 are fixedly connected to the front side and the rear side of the right side of the protective shell 1, the baffle plates 101 used for blocking sewage from flowing out are connected between the two guide rods 100 in a sliding mode, the return springs 102 are connected between the baffle plates 101 and the two guide rods 100, and the two return springs 102 are sleeved on the similar guide rods 100.

When the conveyer belt 83 is used for preliminarily filtering construction waste particles in construction sewage, the pushing block 93 rotates along with the conveyer belt 83, when the pushing block 93 rotates to the upper left side of the conveyer belt 83, the pushing block 93 contacts with the pushing rod 92 and pushes the pushing rod 92 and the scraping plate 90 to slide rightwards, at the moment, the extension spring 91 is stretched, when the scraping plate 90 slides rightwards, the residual sewage impurities on the scraping filter plate 2 are moved rightwards, so that the sewage impurities are scraped rightwards, when the scraping plate 90 slides rightwards to contact with the baffle plate 101, the scraping plate 90 pushes the baffle plate 101 to slide rightwards along the guide rod 100, at the moment, the reset spring 102 is compressed, when the baffle plate 101 slides rightwards, the pushed sewage impurities flow out from the inside of the protective shell 1, so that the sewage impurities on the filter plate 2 can be cleaned under the action of the scraping plate 90, the smooth progress of sewage purification treatment is ensured, when the pushing block 93 rotates to the upper right side of the conveying belt 83, as shown in the running state diagram of fig. 10, a gap exists between the pushing rod 92 and the partition plate 80, when the pushing block 93 continues to rotate, the pushing block 93 is separated from contact with the pushing rod 92, so that the pushing rod 92 and the scraping plate 90 slide and reset leftwards under the reset action of the tension spring 91, when the scraping plate 90 slides and resets leftwards, the scraping plate 90 does not squeeze the baffle plate 101 any more, the baffle plate 101 slides and resets leftwards along the guide rod 100 under the reset action of the reset spring 102 to continuously block sewage, the sewage is prevented from flowing out of the inside of the protective shell 1 when flowing onto the filter plate 2, so that sewage impurities on the filter plate 2 can be cleaned under the action of the scraping plate 90, smooth progress of sewage purification treatment is ensured, and when the pushing block 93 rotates to the lower left side of the conveying belt 83, square holes on the pushing rod 92 pass, this ensures smooth operation of the push block 93.

Referring to fig. 1, 2, 11 and 12, the sewage treatment device further comprises a collecting mechanism 11, the collecting mechanism 11 comprises a collecting frame 110, an anion plate 111 and a return pipe 112, the middle part of the right side of the protecting shell 1 is fixedly connected with the collecting frame 110 for collecting sewage particles, the anion plate 111 for filtering sewage is fixedly connected to the lower part in the collecting frame 110, and the return pipe 112 for returning filtered sewage is fixedly connected to the bottom of the collecting frame 110.

When using scraper blade 90 to strike off the granule impurity on the filter 2, the granule impurity of being scraped will eventually drop to collect in the frame 110, simultaneously with the sewage that granule impurity flows out together will be under the filter action of anion board 111, reflux to the interior lower part of protecting crust 1 through back flow 112, so can collect granule impurity under the effect of collecting the frame 110, avoid impurity and sewage to wantonly trickle polluted environment, can also carry out secondary recovery to the sewage that flows out simultaneously, improve the utilization ratio of sewage. The protective shell also comprises a square cover plate 12, and the square cover plate 12 is arranged on the front side cover of the protective shell 1.

Referring to fig. 1, the front cover of the protective shell 1 further comprises a square cover plate 12, and the square cover plate 12 is arranged on the front side of the protective shell 1.

When the device is used for purifying construction sewage, the square cover plate 12 can be opened, the purification condition of the sewage at the lower part in the protective shell 1 under the action of biological algae can be conveniently observed, and after the observation is finished, the square cover plate 12 is covered back to the front side of the protective shell 1.

Referring to fig. 2, the right side inside the protective shell 1 is fixedly connected with the led plant growth lamp 13.

In order to ensure the growth of biological algae in the process of purifying sewage by the biological algae, the led plant growth lamp 13 can be communicated with a power supply, and then the led plant growth lamp 13 is turned on, so that the growth of the biological algae can be satisfied in the protective shell 1, and the purification of construction sewage is facilitated.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims (4)

1. A device for recycling and purifying construction sewage is characterized in that: the biological algae-removing filter comprises a protective shell (1), a filter plate (2), a wooden activated carbon plate (3), a biological growth frame (4), a water outlet pump (5), a water inlet pipe (6) and a pumping mechanism (7), wherein the filter plate (2) for filtering building sludge particles is fixedly connected to the upper side of the interior of the protective shell (1), the wooden activated carbon plate (3) for adsorbing harmful substances is fixedly connected to the middle of the interior of the protective shell (1), a plurality of filtering long holes are formed in the wooden activated carbon plate (3), the filter plate (2) is positioned above the wooden activated carbon plate (3), the biological growth frame (4) for providing biological algae growth is fixedly connected to the lower side of the interior of the protective shell (1), the water outlet pump (5) is fixedly connected to the lower portion of the protective shell (1), the water inlet pipe (6) is fixedly connected to the upper portion of the protective shell (1), the water inlet pipe (6) is communicated with the interior of the protective shell (1), and the pumping mechanism (7) for pumping and filtering sewage for the second time is arranged at the lower portion of the protective shell (1).

The pumping mechanism (7) comprises conveying pipes (70), conveying pumps (71) and a filter screen (72), wherein the lower part of the protective shell (1) is fixedly connected with a plurality of conveying pipes (70), the conveying pipes (70) extend into the protective shell (1), the conveying pipes (70) are hard pipes, the conveying pumps (71) are fixedly connected to each conveying pipe (70), one end, extending into the protective shell (1), of each conveying pipe (70) is fixedly connected with the filter screen (72) for preventing biological algae from being pumped, the outlet of each conveying pump (71) output pipe extends into the protective shell (1), and the outlet of each conveying pump (71) output pipe is located above the wooden activated carbon plate (3);

the device also comprises a conveying mechanism (8), the conveying mechanism (8) comprises a baffle plate (80), a motor (81), a rotating shaft (82), a conveying belt (83) and a spring piece (84), the baffle plate (80) is fixedly connected to the upper side inside the protective shell (1), the motor (81) is fixedly connected to the upper side inside the protective shell (1), the baffle plate (80) seals the motor (81) between the baffle plate (80) and the protective shell (1), the rotating shaft (82) is fixedly connected to the output shaft of the motor (81) through a coupling, the upper part in the protective shell (1) is rotationally connected with a rotating shaft (82), two rotating shafts (82) are sleeved with a conveying belt (83), a plurality of convex blocks are fixedly connected to the conveying belt (83), the conveying belt (83) is positioned between two partition boards (80), and a spring piece (84) for preventing large-particle impurities from falling from a gap between the conveying belt (83) and the protective shell (1) is fixedly connected to one side, far away from the motor (81), of the upper part in the protective shell (1);

the scraper is characterized by further comprising a scraping mechanism (9), wherein the scraping mechanism (9) comprises a scraping plate (90), tension springs (91), pushing rods (92) and pushing blocks (93), the scraping plate (90) is connected inside the protective shell (1) in a sliding mode, the scraping plate (90) is located above the filter plate (2), a plurality of tension springs (91) are connected between the scraping plate (90) and the interior of the protective shell (1), two pushing rods (92) are fixedly connected to the top of the scraping plate (90), pushing blocks (93) are fixedly connected to two side faces of the conveying belt (83), the pushing blocks (93) can push the corresponding pushing rods (92) to slide when the pushing blocks (93) are located on the upper side of the conveying belt (83), and square holes (94) for the pushing blocks (93) to pass are formed in the two pushing rods (92).

The device is characterized by further comprising a material blocking mechanism (10), wherein the material blocking mechanism (10) comprises guide rods (100), baffles (101) and return springs (102), a plurality of guide rods (100) are fixedly connected to one side surface, far away from the extension springs (91), of the outer part of the protective shell (1), the baffles (101) used for blocking sewage from flowing out are connected between the guide rods (100) in a sliding mode, the return springs (102) are connected between the baffles (101) and the guide rods (100), and the return springs (102) are sleeved on the similar guide rods (100);

when the conveyer belt (83) is used for preliminarily filtering construction waste particles in construction sewage, the pushing block (93) rotates along with the conveyer belt (83), when the pushing block (93) rotates to the upper left side of the conveyer belt (83), the pushing block (93) contacts with the pushing rod (92) and pushes the pushing rod (92) and the scraping plate (90) to slide rightwards, at the moment, the tension spring (91) is stretched, when the scraping plate (90) slides rightwards, the residual sewage impurities on the scraping filter plate (2) move rightwards, so that the sewage impurities are scraped rightwards, when the scraping plate (90) slides rightwards to contact with the baffle plate (101), the pushing baffle plate (101) slides rightwards along the guide rod (100), the reset spring (102) is compressed, when the baffle plate (101) slides rightwards, the pushed sewage impurities flow out from the inside of the protecting shell (1), the impurities on the filter plate (2) can be cleaned under the action of the scraping plate (90), the sewage purification treatment is ensured to be smoothly carried out, when the pushing block (90) slides rightwards, when the pushing block (93) slides rightwards to contact with the pushing block (101), the pushing block (93) is continuously contacted with the pushing block (80) in a gap between the pushing block (93) and the pushing block (93), so push rod (92) and scraper blade (90) will slide the reset to the left under the reset effect of extension spring (91) to when scraper blade (90) slide the reset to the left, scraper blade (90) will not extrude baffle (101) any more, baffle (101) will slide the reset to the left along guide bar (100) under the reset effect of reset spring (102) and continue to block sewage, avoid sewage to flow from inside protecting crust (1) when flowing onto filter (2), can clear up sewage impurity on filter (2) under the effect of scraper blade (90) so far, guarantee going on smoothly of sewage purification treatment, and push block (93) will pass through from square hole on push rod (92) when rotating to conveyer belt (83) left side below, so can guarantee the smooth operation of push block (93).

2. The device for recycling and purifying the construction wastewater according to claim 1, which is characterized in that: the sewage treatment device is characterized by further comprising a collecting mechanism (11), wherein the collecting mechanism (11) comprises a collecting frame (110), an anion plate (111) and a return pipe (112), a collecting frame (110) for collecting sewage particles is fixedly connected to one side surface of the protecting shell (1) which is close to the guide rod (100), the collecting frame (110) is located below the guide rod (100), the anion plate (111) for filtering sewage is fixedly connected to the lower portion in the collecting frame (110), and the return pipe (112) for enabling filtered sewage to flow back is fixedly connected to the bottom of the collecting frame (110).

3. The apparatus for the cyclic purification treatment of construction wastewater according to claim 2, characterized in that: the protective shell also comprises a square cover plate (12), and the middle part of the protective shell (1) is covered with the square cover plate (12).

4. A device for the cyclic purification treatment of building construction wastewater according to claim 3, which is characterized in that: the LED plant growing lamp (13) is fixedly connected inside the protective shell (1).

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