Blowdown device for constructional engineering

Abstract

The invention discloses a blow-down device for constructional engineering, and relates to the field of blow-down treatment.The blow-down device for constructional engineering comprises a filter box, a mounting pipe is rotationally connected into the filter box, a plurality of funnel-shaped filter screen plates are fixedly connected to the outer surface of the mounting pipe, and a plurality of discharging ports are formed in the outer surface of the filter box. A driving mechanism drives a mounting pipe to rotate, the mounting pipe drives a plurality of funnel-shaped filter screen plates to rotate, the filter screen plates filter solid impurities in sewage layer by layer and automatically discharge the filtered impurities, and meanwhile, the mounting pipe drives a material spraying mechanism to uniformly mix a flocculating agent with the filtered sewage, so that the sewage treatment efficiency is improved. According to the sewage treatment device, the sewage treatment device is arranged in the sewage treatment device and drives the flocculation and filtration mechanism to flocculate and filter sewage, sewage discharge does not need to be stopped in the flocculation and filtration process, flowing type flocculation and filtration can be achieved, the device can continuously filter sewage, and the sewage filtration efficiency and the sewage filtration effect are further improved.

Description

Technical Field

[0001] The present invention relates to sewage treatment technology, in particular to a sewage discharge device for construction engineering. Background Art

[0002] During construction, it is necessary to transport excavated soil. In order to avoid dirtying urban roads, transport vehicles need to clean the soil on the tires and the outside of the vehicle body before leaving the construction site. When cleaning the vehicle, a large amount of soil- and sand-containing sewage will be generated. At present, most of this sewage is directly discharged into the municipal sewage pipe after simple filtration. The mud and sand in the sewage are easy to settle and accumulate in the municipal sewage pipe, causing the pipe to be blocked. If the municipal sewage pipe is blocked, it will affect the rapid discharge of water in the city, which is easy to cause urban flooding. Municipal staff are required to explore the pipeline and then dredge it, which costs a lot of manpower and material resources.

[0003] Chinese patent application number 202210581389.8 discloses a sewage discharge device for construction projects, including a sewage treatment tank, the interior of which is divided into two cavities by a partition, two sedimentation hoppers welded under the sewage treatment tank, and the two sedimentation hoppers are respectively connected to the two cavities inside the sewage treatment tank, a sludge discharge device is fixed under the sedimentation hopper, and a top cover is fixed above the sewage treatment tank. The beneficial effects are: by sedimentation treatment of the sewage generated in the construction project and then discharging it, silt and sediment are prevented from entering the municipal sewage pipe, and clogging the municipal sewage pipe to affect the normal discharge of sewage; a transmission impeller is installed in the diversion pipe to drive the dispersion device to rotate automatically, and realize automatic sprinkling of flocculant, so that the flocculant can fully contact with the solid matter in the sewage without stirring, shortening the sedimentation time, and improving the sewage treatment efficiency. However, there are still some shortcomings in the implementation of this patent. The patent requires the sewage to be passed into the sewage treatment tank during the sewage treatment process, and then precipitated and filtered through the sewage treatment tank. However, during the continuous operation of the construction project, for the continuously discharged sewage, the device cannot continuously filter the discharged sewage. When the treatment tank is full of sewage, it cannot continue to filter the subsequent sewage, resulting in low sewage filtration efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a sewage discharge device for construction engineering to solve the above-mentioned deficiencies in the prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a sewage discharge device for construction engineering, comprising a filter box, a mounting pipe rotatably connected to the filter box, a plurality of funnel-shaped filter screens fixedly connected to the outer surface of the mounting pipe, and a plurality of discharge ports formed on the outer surface of the filter box;

[0006] The outer surface of the installation pipe is connected to a material sprinkling mechanism connected to the filter box, and the material sprinkling mechanism is used to evenly sprinkle the flocculant;

[0007] The outer surface of the installation pipe is provided with a flocculation and filtration mechanism connected to the filter box, and the flocculation and filtration mechanism is used to flocculate and filter the filtered sewage;

[0008] The outer surface of the mounting tube is transmission-connected with a driving mechanism, and the driving mechanism is used to drive the mounting tube to rotate.

[0009] Furthermore, the flocculation and filtration mechanism includes two groups of sedimentation mechanisms connected to the filter box, each group of the sedimentation mechanisms includes a plurality of sedimentation elbows rotatably connected to the filter box, the plurality of sedimentation elbows are connected to each other through a synchronous wheel and a synchronous belt, the outer surface of the filter box is fixedly connected to a transmission motor, the output end of the transmission motor is fixedly connected to a first transmission shaft through a coupling, the outer surface of the first transmission shaft is connected to one of the sedimentation elbows through a synchronous wheel and a synchronous belt, one end of the sedimentation elbow is rotatably connected to a first connecting pipe, one end of the first connecting pipe is fixedly connected to a feeding pipe fixedly connected to the filter box, one end of the feeding pipe is transmission-connected to a feeding mechanism connected to the filter box, the feeding mechanism is used to feed the feeding pipe, and the feeding mechanism is transmission-connected to a driving mechanism;

[0010] A self-cleaning mechanism is provided in the sedimentation elbow, and the self-cleaning mechanism is used to clean the dirt in the sedimentation elbow.

[0011] Furthermore, the feeding mechanism includes a first gear fixedly connected to the mounting tube, the outer surface of the first gear is meshedly connected to the second gear, the middle of the second gear is fixedly connected to the second transmission shaft rotatably connected to the filter box, the bottom of the filter box is fixedly connected to the pump body, one end of the second transmission shaft is connected to the power shaft of the pump body through a coupling, the output end of the pump body is fixedly connected to the second connecting pipe, two third connecting pipes are fixedly connected to the second connecting pipe, the third connecting pipe is connected to the feeding pipe, the third connecting pipe is provided with an electromagnetic valve, and the outer surface of the first gear is transmission-connected to the driving mechanism.

[0012] Furthermore, the driving mechanism includes a driving motor fixedly connected to the filter box, the output end of the driving motor is fixedly connected to the driving shaft through a coupling, and the outer surface of the driving shaft is fixedly sleeved with a driving gear meshing with the first gear.

[0013] Furthermore, the sprinkling mechanism includes a plurality of sprinkling pipes fixedly connected to the mounting pipe, a plurality of sprinkling holes are opened on the sprinkling pipe, the bottom end of the mounting pipe is rotatably connected to a feed pipe fixedly connected to the filter box, and the feed pipe is provided with an infusion pump fixedly connected to the filter box.

[0014] Furthermore, the self-cleaning mechanism includes a plurality of first transmission columns fixedly connected to the sedimentation bend pipe, the outer surface of the first transmission column is slidably connected to a transmission ring, the outer surface of the transmission ring is fixedly connected to a first cleaning brush, the bending part of the sedimentation bend pipe is fixedly connected to a second transmission column, the connection part of the sedimentation bend pipe is fixedly connected to a third transmission column, the outer surfaces of the second transmission column and the third transmission column are both rotatably connected to a plurality of transmission blocks, the outer surfaces of the transmission blocks are fixedly connected to a connecting plate via a connecting rod, and a second cleaning brush is fixedly connected to one side of the connecting plate.

[0015] Furthermore, a retaining ring plate is fixedly connected to the outer surface of the filter box.

[0016] Furthermore, a receiving tray fixedly connected to the filter box is provided below the retaining ring plate.

[0017] Compared with the prior art, the sewage discharge device for construction engineering provided by the present invention has the following beneficial effects:

[0018] (1) The driving mechanism drives the installation pipe to rotate, and the installation pipe drives multiple funnel-shaped filter screens to rotate. The filter screens filter the solid impurities in the sewage layer by layer and automatically discharge the filtered impurities. At the same time, the installation pipe drives the sprinkling mechanism to evenly mix the flocculant with the filtered sewage, and drives the flocculation and filtration mechanism to flocculate and filter the sewage. At the same time, there is no need to stop the discharge of sewage during the flocculation and filtration process, and mobile flocculation and filtration can be achieved, so that the device can continuously filter the sewage, further improving the filtration efficiency and filtration effect of the sewage.

[0019] (2) The sewage mixed with flocculants is flocculated and filtered through the sedimentation bend. After a period of flocculation and filtration, the sedimentation bend is driven to rotate to discharge the flocculated and precipitated impurities in the sedimentation bend. At the same time, during the discharge process, the inner wall of the sedimentation bend is automatically cleaned by driving the first cleaning brush and the second cleaning brush, thereby further improving the self-cleaning effect of the sedimentation bend. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 This is a first stereoscopic diagram of the external structure of the present invention;

[0022] Figure 2This is a second stereoscopic view of the external structure of the present invention;

[0023] Figure 3 A three-dimensional diagram of the internal structure of the present invention;

[0024] Figure 4 This is a front view of the internal structure of the sedimentation elbow of the present invention;

[0025] Figure 5 For the present invention Figure 4 A magnified view of middle A;

[0026] Figure 6 For the present invention Figure 4 Magnified view of B.

[0027] Description of reference numerals:

[0028] 1. Filter box; 2. Mounting pipe; 3. Funnel-shaped filter screen; 4. Discharge port; 5. Retaining ring plate; 6. Receiving tray; 11. Sedimentation elbow; 12. Transmission motor; 13. First transmission shaft; 14. First connecting pipe; 15. Feed pipe; 21. First gear; 22. Second gear; 23. Second transmission shaft; 24. Pump body; 25. Second connecting pipe; 26. Third connecting pipe; 27. Drive motor; 28. Drive shaft; 29. ​​Drive gear; 31. Sprinkling pipe; 32. Sprinkling hole; 33. Feed pipe; 34. Infusion pump; 41. First transmission column; 42. Transmission ring; 43. First cleaning brush; 44. Second transmission column; 45. Third transmission column; 46. Transmission block; 47. Connecting plate; 48. Second cleaning brush. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] See also Figures 1 to 6 As shown, a sewage discharge device for construction engineering includes a filter box 1, a mounting pipe 2 is rotatably connected to the filter box 1, a plurality of funnel-shaped filter screen plates 3 are fixedly connected to the outer surface of the mounting pipe 2, and a plurality of discharge ports 4 are opened on the outer surface of the filter box 1;

[0032] The outer surface of the mounting pipe 2 is connected to a material sprinkling mechanism connected to the filter box 1, and the material sprinkling mechanism is used to evenly sprinkle the flocculant;

[0033] The outer surface of the installation pipe 2 is provided with a flocculation and filtration mechanism connected to the filter box 1, and the flocculation and filtration mechanism is used to flocculate and filter the filtered sewage;

[0034] The outer surface of the mounting tube 2 is connected to a driving mechanism, which is used to drive the mounting tube 2 to rotate;

[0035] A retaining ring plate 5 is fixedly connected to the outer surface of the filter box 1 , and a material receiving tray 6 fixedly connected to the filter box 1 is provided below the retaining ring plate 5 .

[0036] The driving mechanism drives the mounting pipe 2 to rotate, and the mounting pipe 2 drives the funnel-shaped filter screen plate 3 to rotate, and at the same time, the sewage used for the construction project is slowly passed into the filter box 1, and the sewage enters the middle of the funnel-shaped filter screen plate 3 in the filter box 1, and then the sewage is filtered through the funnel-shaped filter screen plate 3, first passing through the top funnel-shaped filter screen plate 3 to filter out larger impurities, and then passing through the next funnel-shaped filter screen plate 3 to filter the smaller funnel-shaped filter screen plate 3, and filtering the sewage through multiple funnel-shaped filter screen plates 3, and the filtered impurities remain on the funnel-shaped filter screen plate 3. Since the mounting pipe 2 drives the funnel-shaped filter screen plate 3 to rotate, the filtered impurities are removed from the filter box 1 under the action of centrifugal force. The impurities are thrown out from the funnel-shaped filter screen plate 3, and then discharged through the discharge port 4, and then enter the retaining ring plate 5 for blocking. The blocked impurities fall onto the receiving tray 6, and then are discharged through the receiving tray 6, thereby achieving sufficient preliminary filtration of impurities in the sewage, and automatically discharging the filtered impurities at the same time. The sewage after preliminary filtration falls to the bottom of the filter box 1, and then the flocculant is evenly sprinkled into the filter box 1 through the sprinkling mechanism, and then the sewage mixed with the flocculant is passed into the flocculation and filtration mechanism, and then the flocculation and filtration mechanism performs a flowing slow flocculation on the sewage, so that the device can continuously flocculate and filter the sewage during the sewage discharge process, further improving the filtration efficiency and filtration effect of the sewage.

[0037] Example 2

[0038] Based on Example 1, please refer to Figure 2 and Figure 3 As shown, the flocculation filtration mechanism includes two groups of sedimentation mechanisms connected to the filter box 1, each group of sedimentation mechanisms includes a plurality of sedimentation elbows 11 rotatably connected to the filter box 1, and the plurality of sedimentation elbows 11 are connected by synchronous wheels and synchronous belts. The outer surface of the filter box 1 is fixedly connected to a transmission motor 12, and the output end of the transmission motor 12 is fixedly connected to a first transmission shaft 13 through a coupling. The outer surface of the first transmission shaft 13 is connected to one of the sedimentation elbows 11 through a synchronous wheel and a synchronous belt. One end of the sedimentation elbow 11 is rotatably connected to a first connecting pipe 14, and one end of the first connecting pipe 14 is fixedly connected to a feeding pipe 15 fixedly connected to the filter box 1. One end of the feeding pipe 15 is transmission-connected to a feeding mechanism connected to the filter box 1, and the feeding mechanism is used to feed the feeding pipe 15, and the feeding mechanism is transmission-connected to the driving mechanism.

[0039] A self-cleaning mechanism is provided in the sedimentation elbow 11 , and is used to clean dirt in the sedimentation elbow 11 .

[0040] The feeding mechanism includes a first gear 21 fixedly sleeved on the mounting tube 2, the outer surface of the first gear 21 is meshedly connected with the second gear 22, the middle of the second gear 22 is fixedly sleeved with a second transmission shaft 23 rotatably connected to the filter box 1, the bottom of the filter box 1 is fixedly connected to the pump body 24, one end of the second transmission shaft 23 is connected to the power shaft of the pump body 24 through a coupling, the output end of the pump body 24 is fixedly connected to the second connecting pipe 25, two third connecting pipes 26 are fixedly connected to the second connecting pipe 25, the third connecting pipe 26 is connected to the feeding pipe 15, and an electromagnetic valve is provided on the third connecting pipe 26. The outer surface of the first gear 21 is transmission-connected to the driving mechanism.

[0041] The driving mechanism includes a driving motor 27 fixedly connected to the filter box 1. The driving motor 27 is controlled by a PLC programming program, and can control the driving motor 27 to rotate forward and reverse and rotate at an angle. The output end of the driving motor 27 is fixedly connected to a driving shaft 28 through a coupling. The outer surface of the driving shaft 28 is fixedly sleeved with a driving gear meshing with the first gear 21. The driving motor 27 drives the driving shaft 28 to rotate, and the driving shaft 28 drives the first gear 21 to rotate through the driving gear 29, and the first gear 21 drives the mounting tube 2 to rotate.

[0042] The mounting pipe 2 is driven to rotate by the driving mechanism, and the mounting pipe 2 drives the second transmission shaft 23 to rotate through the first gear 21 and the second gear 22, and the second transmission shaft 23 drives the power shaft on the pump body 24 to rotate, and the power shaft drives the pump body 24 to operate, and the pump body 24 pumps the sewage mixed with flocculant at the bottom of the filter box 1 into the second connecting pipe 25 through the pipeline, and the second connecting pipe 25 supplies sewage to the third connecting pipe 26. At this time, an electromagnetic valve on the third connecting pipe 26 is opened, and then the sewage enters the feeding pipe 15 through the third connecting pipe 26, and the feeding pipe 15 supplies sewage to the sedimentation elbow 11 through the first connecting pipe 14. Since the inner diameter of the sedimentation elbow 11 is large, the flow rate of the sewage entering the sedimentation elbow 11 is slow. At this time, the sewage flows slowly in multiple sedimentation elbows 11, and the flocculant acts on the sewage during the flow. The impurities in the sewage are flocculated and precipitated so as to be precipitated in the sedimentation elbow 11. After flocculation and precipitation for a period of time, the electromagnetic valve on the other third connecting pipe 26 is opened and the electromagnetic valve on the third connecting pipe 26 is closed. Then the sewage mixed with the flocculant enters the other set of sedimentation elbows 11 for flocculation and precipitation, thereby realizing continuous flocculation and precipitation of the sewage. Subsequently, the transmission motor 12 is started, and the transmission motor 12 drives the first transmission shaft 13 to rotate. The first transmission shaft 13 drives the sedimentation elbow 11 to rotate through the synchronous wheel and the synchronous belt. The sedimentation elbow 11 drives the other two sedimentation elbows 11 to rotate through the synchronous wheel and the synchronous belt, and the impurities precipitated in the sedimentation elbow 11 are poured out. At the same time, the sedimentation elbow 11 is driven to rotate at high speed. The impurities in the sedimentation elbow 11 are thrown out under the action of centrifugal force, thereby realizing automatic discharge of the flocculated sediment.

[0043] The material sprinkling mechanism includes multiple material sprinkling pipes 31 fixedly connected to the mounting pipe 2, and multiple material sprinkling holes 32 are opened on the material sprinkling pipe 31. The bottom end of the mounting pipe 2 is rotatably connected to a delivery pipe 33 fixedly connected to the filter box 1, and an infusion pump 34 fixedly connected to the filter box 1 is provided on the delivery pipe 33.

[0044] The driving mechanism drives the mounting pipe 2 to rotate, and the mounting pipe 2 drives the sprinkling pipe 31 to rotate. At the same time, the flocculant liquid is pumped into the delivery pipe 33 through the infusion pump 34. Then the delivery pipe 33 passes the flocculant into the mounting pipe 2. Then the mounting pipe 2 passes the flocculant liquid into the sprinkling pipe 31 and discharges it through the sprinkling hole 32 on the sprinkling pipe 31, thereby achieving uniform sprinkling of the flocculant liquid into the sewage.

[0045] Example 3

[0046] Based on Example 2, please refer to Figures 4 to 6As shown, the self-cleaning mechanism includes a plurality of first transmission columns 41 fixedly connected to the sedimentation bend 11, the outer surface of the first transmission column 41 is slidably connected to a transmission ring 42, the outer surface of the transmission ring 42 is fixedly connected to a first cleaning brush 43, the bending part of the sedimentation bend 11 is fixedly connected to a second transmission column 44, the connection part of the sedimentation bend 11 is fixedly connected to a third transmission column 45, the outer surfaces of the second transmission column 44 and the third transmission column 45 are both rotatably connected to a plurality of transmission blocks 46, the outer surface of the transmission block 46 is fixedly connected to a connecting plate 47 through a connecting rod, and a second cleaning brush 48 is fixedly connected to one side of the connecting plate 47.

[0047] When the sedimentation bend 11 is driven to rotate slowly to discharge sewage, the transmission ring 42 on the first transmission column 41 in the sedimentation bend 11 moves back and forth up and down under the action of gravity, and the transmission ring 42 drives the first cleaning brush 43 to clean the inner wall of the sedimentation bend 11 back and forth. At the same time, the transmission block 46 on the second transmission column 44 and the third transmission column 45 rotates, and the transmission block 46 drives the connecting plate 47 and the second cleaning brush 48 to rotate. The second cleaning brush 48 brushes the inner wall of the sedimentation bend 11, thereby fully cleaning the inner wall of the sedimentation bend 11 and further improving the self-cleaning effect of the sedimentation bend 11.

[0048] Working principle: The driving mechanism drives the mounting pipe 2 to rotate, and the mounting pipe 2 drives the funnel-shaped filter plate 3 to rotate. At the same time, the sewage used for the construction project is slowly introduced into the filter box 1. The sewage enters the middle of the funnel-shaped filter plate 3 in the filter box 1, and then the sewage is filtered through the funnel-shaped filter plate 3. First, the larger impurities are filtered out through the top funnel-shaped filter plate 3, and then the smaller funnel-shaped filter plate 3 is filtered through the next funnel-shaped filter plate 3. The sewage is filtered through multiple funnel-shaped filter plates 3, and the filtered impurities remain on the funnel-shaped filter plate 3. Since the mounting pipe 2 drives the funnel-shaped filter plate 3 to rotate, the filtered impurities are removed under the action of centrifugal force. The impurities are thrown out from the funnel-shaped filter screen plate 3, and then discharged through the discharge port 4, and then enter the retaining ring plate 5 for blocking. The blocked impurities fall onto the receiving tray 6, and then are discharged through the receiving tray 6, thereby achieving sufficient preliminary filtration of impurities in the sewage, and automatically discharging the filtered impurities. The sewage after preliminary filtration falls to the bottom of the filter box 1, and then the flocculant is evenly sprinkled into the filter box 1 through the sprinkling mechanism, and then the sewage mixed with the flocculant is passed into the flocculation and filtration mechanism, and then the flocculation and filtration mechanism performs a flowing slow flocculation on the sewage, so that the device can continuously flocculate and filter the sewage during the sewage discharge process, further improving the filtration efficiency and filtration effect of the sewage.

[0049] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A sewage discharge device for construction engineering, characterized in that: It comprises a filter box (1), a mounting tube (2) rotatably connected to the inside of the filter box (1), a plurality of funnel-shaped filter screen plates (3) fixedly connected to the outer surface of the mounting tube (2), and a plurality of discharge ports (4) formed on the outer surface of the filter box (1); The outer surface of the installation pipe (2) is connected to a material sprinkling mechanism connected to the filter box (1), and the material sprinkling mechanism is used to evenly sprinkle the flocculant; The outer surface of the installation pipe (2) is provided with a flocculation and filtration mechanism connected to the filter box (1), and the flocculation and filtration mechanism is used to flocculate and filter the filtered sewage; The outer surface of the mounting tube (2) is transmission-connected with a driving mechanism, and the driving mechanism is used to drive the mounting tube (2) to rotate.

2. A sewage discharge device for construction engineering according to claim 1, characterized in that: The flocculation filtering mechanism comprises two groups of sedimentation mechanisms connected to the filter box (1), each group of the sedimentation mechanisms comprises a plurality of sedimentation bends (11) rotatably connected to the filter box (1), the plurality of sedimentation bends (11) are connected to each other through a synchronous wheel and a synchronous belt transmission, the outer surface of the filter box (1) is fixedly connected to a transmission motor (12), the output end of the transmission motor (12) is fixedly connected to a first transmission shaft (13) through a coupling, the outer surface of the first transmission shaft (13) is connected to one of the sedimentation bends (11) through a synchronous wheel and a synchronous belt transmission, one end of the sedimentation bend (11) is rotatably connected to a first connecting pipe (14), one end of the first connecting pipe (14) is fixedly connected to a feeding pipe (15) fixedly connected to the filter box (1), one end of the feeding pipe (15) is transmission-connected to a feeding mechanism connected to the filter box (1), the feeding mechanism is used to feed the feeding pipe (15), and the feeding mechanism is transmission-connected to a driving mechanism; A self-cleaning mechanism is provided in the sedimentation bend pipe (11), and the self-cleaning mechanism is used to clean dirt in the sedimentation bend pipe (11).

3. A sewage discharge device for construction engineering according to claim 2, characterized in that: The feeding mechanism comprises a first gear (21) fixedly sleeved on the mounting tube (2), the outer surface of the first gear (21) is meshedly connected with a second gear (22), the middle of the second gear (22) is fixedly sleeved with a second transmission shaft (23) rotatably connected to the filter box (1), the bottom of the filter box (1) is fixedly connected with a pump body (24), one end of the second transmission shaft (23) is connected to the power shaft of the pump body (24) through a coupling, the output end of the pump body (24) is fixedly connected with a second connecting pipe (25), two third connecting pipes (26) are fixedly connected to the second connecting pipe (25), the third connecting pipes (26) are connected to the feeding pipe (15), and the third connecting pipes (26) are provided with electromagnetic valves. The outer surface of the first gear (21) is transmission-connected to the driving mechanism.

4. A sewage discharge device for construction engineering according to claim 3, characterized in that: The driving mechanism comprises a driving motor (27) fixedly connected to the filter box (1); an output end of the driving motor (27) is fixedly connected to a driving shaft (28) via a coupling; and a driving gear (29) meshingly connected to the first gear (21) is fixedly sleeved on the outer surface of the driving shaft (28).

5. A sewage discharge device for construction engineering according to claim 1, characterized in that: The material sprinkling mechanism comprises a plurality of material sprinkling pipes (31) fixedly connected to the mounting pipe (2), a plurality of material sprinkling holes (32) being provided on the material sprinkling pipes (31), a bottom end of the mounting pipe (2) being rotatably connected to a delivery pipe (33) fixedly connected to the filter box (1), and an infusion pump (34) fixedly connected to the filter box (1) being provided on the delivery pipe (33).

6. A sewage discharge device for construction engineering according to claim 2, characterized in that: The self-cleaning mechanism comprises a plurality of first transmission columns (41) fixedly connected to the sedimentation bend (11); the outer surface of the first transmission column (41) is slidably connected to a transmission ring (42); the outer surface of the transmission ring (42) is fixedly connected to a first cleaning brush (43); the bending portion of the sedimentation bend (11) is fixedly connected to a second transmission column (44); the connection portion of the sedimentation bend (11) is fixedly connected to a third transmission column (45); the outer surfaces of the second transmission column (44) and the third transmission column (45) are both rotatably connected to a plurality of transmission blocks (46); the outer surfaces of the transmission blocks (46) are fixedly connected to a connecting plate (47) via a connecting rod; and a second cleaning brush (48) is fixedly connected to one side of the connecting plate (47).

7. A sewage discharge device for construction engineering according to claim 1, characterized in that: A retaining ring plate (5) is fixedly connected to the outer surface of the filter box (1).

8. A sewage discharge device for construction engineering according to claim 1, characterized in that: A material receiving tray (6) fixedly connected to the filter box (1) is provided below the retaining ring plate (5).

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