A construction site wastewater treatment system

Abstract

The invention discloses a construction site wastewater treatment system, which relates to the field of wastewater treatment equipment and comprises a box body, wherein a box cover is provided on the top of the box body, and a straight roller and an inclined roller are provided below the box cover, both ends of the straight roller and the inclined roller are rotatably mounted on the side wall of the box body, a leakage gap is provided between the straight roller and the inclined roller, a partition storage box is provided below the leakage gap, symmetrical drainage plates are provided above the two side walls of the partition storage box, and the drainage plates are located below the straight roller and the inclined roller, an electric chain belt is provided on the side surface of the partition storage box, and an oil removal rod group is provided on the side surface of the chain link of the electric chain belt, and the oil removal rod group removes grease on the surface of wastewater in the partition storage box under the drive of the electric chain belt, and an extrusion recovery box is provided on the outer side of the oil removal rod group, and the extrusion recovery box is installed on the box body and used for recovering grease.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment equipment, in particular to a construction site wastewater treatment system. Background Art

[0002] Many construction sites, such as development zones, factory areas, and road and bridge construction sites, are newly developed land, often located in the wilderness, with inconveniences in water, electricity, sewage treatment, food and accommodation. On these construction sites, workers' food, clothing, housing and transportation must be solved on the site. The main sources of wastewater generated by life and production are cleaning of construction vehicles, canteens, concrete pouring, etc. The wastewater generated by these activities is usually mixed together for storage, treatment and then discharged because the site conditions cannot meet the conditions for sewage diversion.

[0003] During the storage and treatment process, because the wastewater may contain many chemical substances, heavy metal ions, construction particles, dust and other substances in building materials, it cannot be discharged directly. At the same time, these wastewaters are mixed with oily wastewater generated by the canteen and wastewater containing engine oil and gasoline generated by washing vehicles. After long-term storage, it is easy to produce a viscous mixture of oil and dust. When the weather is hot, the wastewater may also rot and deteriorate, affecting the environment of the construction site and the health of the workers. Therefore, it is necessary to deal with it in time to separate the grease, wastewater and solid particles contained in the wastewater, and the wastewater, waste oil and waste solids need to be collected and treated separately after separation. In particular, the solid waste needs to be judged according to the size whether it needs to be crushed again in the future, and it needs to be classified and recycled. During natural storage, some grease will be mixed, wrapped together and sunk in the wastewater due to some fine solid particles and cannot float on the surface of the wastewater normally, so it needs to be treated. During the treatment, because the grease content in each batch of wastewater is different, some batches have less grease content and only float on the surface in a thin layer, which is not easy to precipitate quickly, affecting the treatment efficiency. Summary of the invention

[0004] The object of the present invention is to provide a construction site wastewater treatment system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a construction site wastewater treatment system, comprising a box body, a box cover is provided on the top of the box body, and a straight roller and an inclined roller are provided below the box cover, and both ends of the straight roller and the inclined roller are rotatably mounted on the side wall of the box body, and a leakage gap is provided between the straight roller and the inclined roller, and a partition storage box is provided below the leakage gap, and the interior of the partition storage box is divided into a plurality of storage rooms by partitions, and symmetrical drainage plates are provided above the two side walls of the partition storage box, and the drainage plates are located below the straight roller and the inclined roller, and an electric chain belt is provided on the side of the partition storage box, and a degreasing rod group is provided on the side of the chain link of the electric chain belt, and the degreasing rod group removes grease on the surface of the wastewater in the partition storage box under the drive of the electric chain belt, and an extrusion recovery box is provided on the outside of the degreasing rod group, and the extrusion recovery box is installed on the box body and used to recover grease.

[0006] Preferably, a bracket is provided at the bottom of the box body, and a closed door that can be opened and closed is provided at the bottom of the box body and below each storage room.

[0007] Preferably, a funnel is provided on the box cover, which is located on one side of the box cover and has a length of 1 / 5-1 / 4 of the length of the box cover.

[0008] Preferably, the straight roller and the bevel roller are installed obliquely in the box, and the central axes of the straight roller and the bevel roller are both at an angle of 10°-15° with the horizontal direction.

[0009] Preferably, the roller surface of the inclined roller is a conical surface, and the angle of the conical surface is 10°-15°.

[0010] Preferably, a through hole for the oil removal rod group to pass through is provided on the side wall of the partition storage box, and pressing slopes are provided at both ends of the through hole. A push rod is also provided at the pressing slope at the end of the oil removal rod group in the moving direction in the partition storage box, and the tail of the push rod is connected to the output shaft of the electric push rod. The electric push rod is installed in a sealing cover, and the height of the partition is lower than the bottom surface of the through hole.

[0011] Preferably, the drain plate is provided with a leakage hole corresponding to the position of the storage room below, the overall shape of the drain plate is formed by two arc surfaces spliced ​​together, the leakage hole is located at the lowest position of the joint of the arc surfaces at both ends, and a scraper is provided at the edge of the drain plate, and the top of the scraper is in contact with the roller surface of the straight roller and the inclined roller.

[0012] Preferably, the oil removal rod group includes a cross bar, a vertical bar, an oil removal pad and a curling spring plate. The root of the cross bar is fixedly connected to the side of the curling spring plate, the top of the vertical bar is connected to the end of the cross bar by rotating on the rotating joint assembly, the oil removal pad is fixedly installed on the bottom of the vertical bar, and the curling spring plate is fixed on the chain link and is located at the root of the cross bar.

[0013] Preferably, the rotating joint assembly includes a connecting column, a rotating column and a fixed column, the side of the connecting column is connected to the rotating column, the bottom of the connecting column is connected to the vertical pole, the rotating column is inserted into the cross bar and is rotatably connected to the cross bar, the fixed column and the rotating column are cross-arranged and the top extends out of the cross bar to frictionally contact with the corresponding slot set on the cross bar.

[0014] Preferably, the extrusion recovery box comprises two symmetrically arranged extrusion walls, both ends of the extrusion walls are provided with arc surfaces, and the side walls of the extrusion walls are provided with guide grooves.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The invention can separate and store solid impurities in wastewater according to their size by setting up inclined straight rollers and gradually increasing the gap between inclined rollers, thus preliminarily completing the classification and recycling of solid waste;

[0017] 2. The partitioned storage boxes provided by the invention can store solid wastes of different sizes respectively. By taking advantage of the fact that the larger the size and the heavier the weight of the same substance, the easier it is to settle, the solid, liquid and grease in the storage room storing large particles of solid waste are preferentially separated. When the preferentially separated part of the grease passes through other areas, the polymerization reaction between the grease is utilized to make the grease in the wastewater in the storage room storing small particles of solid waste also precipitate quickly, thereby accelerating the separation of solid, liquid and grease;

[0018] 3. The degreasing pad provided in the invention can absorb and remove the grease aggregated on the surface of the wastewater in a continuous circulation, and then cooperate with the sealing door provided at the bottom of the box to discharge the wastewater first, thereby completing the separate collection of solid, liquid and grease. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 It is the front view of the straight roller and the inclined roller;

[0022] Figure 4 It is a top view of a straight roller and an inclined roller;

[0023] Figure 5 It is the structural diagram of the box body and the partition storage box;

[0024] Figure 6 It is a schematic diagram of the structure of the separated storage box and the drainage plate;

[0025] Figure 7 Schematic diagram of the structure for separating the storage box and the sealing cover

[0026] Figure 8 for Figure 7 A magnified view of the structure at inner A;

[0027] Fig. 9 The structure diagram of the storage box, electric chain belt, oil removal rod group and extrusion recovery box is as follows;

[0028] Fig.10 for Fig. 9 A magnified view of the structure at inner B;

[0029] Fig.11 It is a schematic diagram of the structure of the oil removal rod group;

[0030] Fig.12 Schematic diagram of the extrusion recycling box structure.

[0031] In the figure: 1-box; 12-bracket;

[0032] 2-box cover; 22-funnel;

[0033] 3-straight roller; 4-bevel roller;

[0034] 5-separated storage box; 51-partition plate; 52-drainage plate; 521-leak hole; 522-scraper; 53-through hole; 54-pressing slope; 55-elevator; 56-push rod; 57-sealing cover;

[0035] 6-electric chain belt; 61-chain link;

[0036] 7-oil removal rod assembly; 71-cross bar; 72-vertical bar; 73-oil removal pad; 74-curling spring plate;

[0037] 76-rotating joint assembly; 761-connecting column; 762-rotating column; 763-fixed column;

[0038] 8-extrusion recovery box; 81-extrusion wall; 82-guide groove. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 12 The present invention provides a technical solution: a construction site wastewater treatment system, comprising a box body 1, a box cover 2 is provided on the top of the box body 1, and a straight roller 3 and an inclined roller 4 are arranged side by side below the box cover 2, and both ends of the straight roller 3 and the inclined roller 4 are rotatably mounted on the side wall of the box body 1, and a leakage gap is provided between the straight roller 3 and the inclined roller 4, and a partition storage box 5 is provided below the leakage gap, and the interior of the partition storage box 5 is divided into a plurality of storage rooms by a partition 51, and symmetrical drainage plates 52 are provided above the two side walls of the partition storage box 5, and the drainage plates 52 are located at the bottom of the partition storage box 5. Below the straight roller 3 and the bevel roller 4, an electric chain belt 6 is provided on the side of the partition storage box 5, and an oil removal rod group 7 is provided on the side of the chain link 61 of the electric chain belt 6. The oil removal rod group 7 removes grease on the surface of the wastewater in the partition storage box 5 under the drive of the electric chain belt 6. An extrusion recovery box 8 is provided on the outside of the oil removal rod group 7. The extrusion recovery box 8 is installed on the box body 1 and is used to recover grease. Through the set straight roller 3 and the bevel roller 4, the separation of solid wastes of different sizes is realized and the separated solid wastes are separately stored in the partition storage box 5, and then the grease in the wastewater is separated.

[0041] In this embodiment, a bracket 12 is provided at the bottom of the box body 1, and a closed door that can be opened and closed is provided at the bottom of the box body 1 and below each storage room. Solid waste can be discharged when the closed door is opened. Solid waste of different sizes requires different treatment processes later, and different sizes can be separated in this step.

[0042] In this embodiment, a funnel 22 is provided on the box cover 2. The funnel 22 is located on one side of the box cover 2 and has a length of 1 / 5-1 / 4 of the length of the box cover 2. That is, the funnel 22 is located on one side of the box cover 2 and on the side with a smaller leakage gap.

[0043] In this embodiment, the straight roller 3 and the bevel roller 4 are installed obliquely in the box body 1, and the straight roller 3 and the bevel roller 4 are driven to rotate by an external motor device. In order to increase the friction force on the roller surface, roller teeth are also required to be arranged on the roller surface. The central axis of the straight roller 3 and the bevel roller 4 are both at an angle of 10°-15° with the horizontal direction, so that the straight roller 3 and the bevel roller 4 have an inclination angle from top to bottom, which is convenient for the solid waste located between the two rollers to move along the leakage gap from the small end to the large end during the rolling of the straight roller 3 and the bevel roller 4, so as to separate the solid waste as completely as possible.

[0044] In this embodiment, the roller surface of the inclined roller 4 is a conical surface, and the cone angle is 10°-15°, so that the inclined roller 4 presents a cone with a large diameter at one end and a small diameter at the other end. The large end is located on the side of the funnel 22, and the end with the large diameter has higher strength, which makes it easier to maintain better rolling strength after a large amount of solid-containing wastewater is poured down.

[0045] In this embodiment, a through hole 53 is provided on the side wall of the partition storage box 5 for the oil removal rod group 7 to pass through, and pressing slopes 54 are provided at both ends of the through hole 53. A push rod 55 is also provided at the pressing slope 54 at the end of the moving direction of the oil removal rod group 7 in the partition storage box 5. The tail of the push rod 55 is connected to the output shaft of the electric push rod 56, and the electric push rod 56 is installed in the sealing cover 57. The height of the partition 51 is lower than the bottom surface of the through hole 53. The drain plate 52 is provided with a leakage hole 521 corresponding to the position of the storage room below. The overall shape of the drain plate 52 is formed by splicing two arc surfaces, and the leakage hole 521 is located at the splicing of the arc surfaces at both ends. At the lowest position, a scraper 522 is provided at the edge of the guide plate 52, and the top of the scraper 522 contacts the roller surface of the straight roller 3 and the inclined roller 4. The wastewater falling between the straight roller 3 and the inclined roller 4 will be driven by the centrifugal force of the continuously rotating rollers to be thrown onto the guide plate 52, and the solid particles with higher density will fall into the partition storage box 5 below from the leakage gap. After the fly ash is evenly spread on the guide plate 52, it flows into the partition storage box 5 below through the leakage hole 521. The scraper 522 can scrape off the grease adhering to the surface of the straight roller 3 and the inclined roller 4 to protect the working surface of the roller from slipping.

[0046] In this embodiment, the degreasing rod group 7 includes a cross bar 71, a vertical bar 72, a degreasing pad 73 and a curling spring plate 74. The root of the cross bar 71 is fixedly connected to the side of the curling spring plate 61, and the top of the vertical bar 72 is connected to the end of the cross bar 71 by rotating on the rotating joint assembly 76. The degreasing pad 73 is fixedly installed at the bottom of the vertical bar 72. The curling spring plate 74 is fixed on the chain link 61 and is located at the root of the cross bar 71. The rotating joint assembly 76 includes a connecting column 761, a rotating column 762 and a fixed column 763. The side of the connecting column 761 is connected to the rotating column 762, and the bottom of the connecting column 761 is connected to the vertical bar 72. The rotating column 762 is inserted into the cross bar 71 and is rotatably connected to the cross bar 71. The fixed column 763 and the rotating column 762 are arranged in a cross shape and the top extends out of the cross bar 71 and the cross bar 7 1, and the corresponding card slot 711 set on 1 is in friction contact. When the electric chain belt 6 keeps rotating, the degreasing rod group 7 outside the partition storage box 5 is brought into the partition storage box 5. When passing the pressing slope 54, the vertical rod 72 and the degreasing pad 73 are blocked, forcing the rotating column 762 to rotate with the fixed column 763 in the card slot 711 until the vertical rod 72 rotates to pass through the through hole 53, and then the cross bar 71 will be driven by the curling spring plate 74 to reset, so that the degreasing pad 73 is in a vertical state. The degreasing pad 73 passes through the upper layer of wastewater in the partition storage box 5, takes away the grease accumulated in the upper layer, and then moves to the end of the through hole 53. At this time, the push rod 55 is brought out by the electric push rod 56, and the push rod 55 pushes the top of the vertical rod 72, so that the entire vertical rod 72 rotates, tilts at a fixed angle, and moves out of the partition storage box 5 through the end of the through hole 53 to complete the separation of grease from the surface layer of the wastewater.

[0047] In this embodiment, the degreasing pad 73 is made of organic silicon polymer material, carbon sponge or other oil-absorbing cotton materials.

[0048] In this embodiment, the extrusion recovery box 8 includes two symmetrically arranged extrusion walls 81, both ends of the extrusion wall 81 are provided with arc surfaces, and the side walls of the extrusion wall 81 are provided with guide grooves 82. The degreasing pad 73 carrying grease enters the extrusion wall 81, and the grease therein is squeezed out and flows into the extrusion recovery box 8 at the bottom along the guide grooves 82.

[0049] Working principle: first, pour the wastewater through the funnel 22, the incoming wastewater falls into the leakage gap and is separated by the straight roller 3 and the inclined roller 4 into wastewater and solid particles of different sizes, and then the solid particles of different sizes enter different storage rooms, and the wastewater evenly enters the partition storage box 5. Since larger solid particles are easier to settle, the solid, liquid and grease in the storage room here are separated first, and some of the analyzed grease is aggregated into agglomerates through the polymerization of grease, and accelerates the precipitation of grease in the wastewater in the remaining storage rooms and continues to aggregate into agglomerates, and then the grease floating on the surface is removed by the provided degreasing pad 73 and finally collected in the extrusion recovery box 8, completing the separation of solid, liquid and grease in the wastewater.

[0050] Based on the above, the invention can separate and store solid impurities contained in wastewater according to size by setting up inclined straight rollers and gradually increasing the leakage gap between the inclined rollers, thereby preliminarily completing the classification and recycling of solid waste.

[0051] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A construction site wastewater treatment system, characterized in that: The invention comprises a box body (1), wherein a box cover (2) is provided on the top of the box body (1), and a straight roller (3) and an inclined roller (4) are provided below the box cover (2) and arranged side by side, and both ends of the straight roller (3) and the inclined roller (4) are rotatably mounted on the side wall of the box body (1), and a material leakage gap is provided between the straight roller (3) and the inclined roller (4), and the roller surface of the inclined roller (4) is a conical surface with a conical surface angle of 10°-15°, and a partition storage box (5) is provided below the material leakage gap, and the interior of the partition storage box (5) is divided into a plurality of storage rooms by a partition (51). Symmetrical drainage plates (52) are provided above the two side walls of the partition storage box (5), and the drainage plates (52) are located below the straight roller (3) and the inclined roller (4). An electric chain belt (6) is provided on the side of the partition storage box (5), and a degreasing rod group (7) is provided on the side of the chain link (61) of the electric chain belt (6). The degreasing rod group (7) removes grease on the surface of wastewater in the partition storage box (5) under the drive of the electric chain belt (6). An extrusion recovery box (8) is provided on the outside of the degreasing rod group (7), and the extrusion recovery box (8) is installed on the box body (1) and is used to recover grease; A through hole (53) is provided on the side wall of the partition storage box (5) for the oil removal rod group (7) to pass through, and pressing inclined surfaces (54) are provided at both ends of the through hole (53). A push rod (55) is also provided at the pressing inclined surface (54) at the end of the oil removal rod group (7) in the moving direction in the partition storage box (5), and the tail of the push rod (55) is connected to the output shaft of an electric push rod (56). The electric push rod (56) is installed in a sealing cover (57). The height of the partition plate (51) is lower than the bottom surface of the through hole (53); The degreasing rod assembly (7) comprises a cross bar (71), a vertical bar (72), a degreasing pad (73) and a curling spring plate (74); the root of the cross bar (71) is fixedly connected to the curling spring plate (74); the top of the vertical bar (72) is connected to the end of the cross bar (71) by rotating on a rotating joint assembly (76); the degreasing pad (73) is fixedly mounted on the bottom of the vertical bar (72); and the curling spring plate (74) is fixed on the chain link (61) and is located at the root of the cross bar (71).

2. A construction site wastewater treatment system according to claim 1, characterized in that: A bracket (12) is provided at the bottom of the box body (1), and a closed door that can be opened and closed is provided at the bottom of the box body (1) and below each storage room.

3. A construction site wastewater treatment system according to claim 1, characterized in that: The box cover (2) is provided with a funnel (22), which is located on one side of the box cover (2) and has a length of 1 / 5 to 1 / 4 of the length of the box cover (2).

4. A construction site wastewater treatment system according to claim 1, characterized in that: The straight roller (3) and the inclined roller (4) are installed obliquely in the box body (1), and the central axis of the straight roller (3) and the inclined roller (4) are both at an angle of 10°-15° with the horizontal direction.

5. A construction site wastewater treatment system according to claim 1, characterized in that: The drainage plate (52) is provided with a leakage hole (521) corresponding to the position of the storage room below. The overall shape of the drainage plate (52) is formed by splicing two arc surfaces. The leakage hole (521) is located at the lowest position of the splicing of the arc surfaces at both ends. A scraper (522) is provided at the edge of the drainage plate (52). The top of the scraper (522) contacts the roller surfaces of the straight roller (3) and the inclined roller (4).

6. A construction site wastewater treatment system according to claim 1, characterized in that: The rotating joint assembly (76) comprises a connecting column (761), a rotating column (762) and a fixed column (763); the side surface of the connecting column (761) is connected to the rotating column (762); the bottom of the connecting column (761) is connected to the vertical rod (72); the rotating column (762) is inserted into the cross bar (71) and is rotatably connected to the cross bar (71); the fixed column (763) and the rotating column (762) are arranged in a cross shape, and the top of the fixed column (763) extends out of the cross bar (71) and is in frictional contact with a corresponding slot (711) provided on the cross bar (71).

7. A construction site wastewater treatment system according to claim 1, characterized in that: The extrusion recovery box (8) comprises two symmetrically arranged extrusion walls (81), both ends of the extrusion walls (81) are provided with arc surfaces, and the side walls of the extrusion walls (81) are provided with guide grooves (82).

Images