Environment-friendly sludge treatment equipment for pile foundation construction

Abstract

The invention relates to the field of sludge treatment, in particular to environment-friendly pile foundation construction sludge treatment equipment which comprises a base, a flocculation tank, a water collection tank, a stacked spiral main shaft and stacked spiral plates. The base is fixedly connected with a flocculation box; the base is fixedly connected with a water collecting tank; a discharge hole is formed in the water collecting tank; the water collecting tank is rotationally connected with a stacked screw main shaft, the stacked screw main shaft is fixedly connected with an output shaft of a driving motor mounted on the water collecting tank, and the stacked screw main shaft penetrates through the discharging hole; the overlapped screw main shaft is connected with a plurality of overlapped screw plates; the device further comprises a connecting plate and the like. And the overlapped screw main shaft is connected with a connecting plate. One back pressure plate independently moves towards one side far away from the discharge hole under the extrusion of hard sludge, the corresponding spring rod is compressed, the corresponding back pressure plate drives the limiting strip to slide in the sliding groove, so that the gap between the corresponding back pressure plate and the discharge hole is enlarged, and the other back pressure plates are kept in original positions; therefore, the hard sludge and the soft sludge are extruded through different back pressure plates.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sludge treatment, in particular to an environment-friendly sludge treatment equipment for pile foundation construction. BACKGROUND

[0002] A large amount of sewage sludge is generated in building pile foundation construction, and sludge treatment is an important link in the sewage treatment process, which aims to effectively treat and dispose of the sludge generated in the sewage treatment process to reduce environmental pollution and resource waste. Sludge drying is to further reduce the moisture content of the sludge through physical methods, which is convenient for transportation or further treatment. The stacked screw sludge dewatering machine is a high-efficiency solid-liquid separation equipment, which realizes the extrusion dewatering of sludge through the extrusion principle of screw, the strong extrusion force generated by the change of screw diameter and pitch, and the small gap between the floating ring and the fixed ring. For example, the Chinese patent with publication number CN118579974A discloses a dewatering and drying device for sewage sludge in environmental pollution treatment. The back pressure plate can adaptively displace according to the hardness of the sludge drying during continuous operation of the device, change the size of the gap between the extrusion outlet and the back pressure plate, and limit the back pressure plate through the avoidance assembly, which can not only ensure the dewatering and drying effect of the discharged sludge, but also effectively avoid the blockage caused by the hardness of the discharged sludge.

[0003] However, due to the need for well drilling in building pile foundation construction, the sludge generated comes from different rock layers, and the hardness, viscosity and other characteristics differ greatly. When the sludge with different characteristics is mixed and flocculated together and then extruded through the 4-stacked screw main shaft, the hardness of the mixed sludge after dewatering and drying is different. Although the existing technology can adjust the gap between the back pressure plate and the discharge port in real time to adapt to sludge with different hardness, the back pressure plate is adjusted as a whole. If the mixed sludge is extruded from the discharge port at the same time, there will be soft sludge and hard sludge. The harder sludge will push out the back pressure plate and increase the extrusion gap, resulting in the soft sludge extruded from the discharge port becoming dilute and having a high water content, which reduces the sludge treatment quality. SUMMARY

[0004] In order to overcome the shortcomings of the prior art that the back pressure plate is adjusted as a whole, and if the mixed sludge is extruded from the discharge port at the same time, there will be soft sludge and hard sludge, the harder sludge will push out the back pressure plate and increase the extrusion gap, resulting in the soft sludge extruded from the discharge port becoming dilute, the present application provides an environment-friendly sludge treatment equipment for pile foundation construction.

[0005] The technical implementation scheme of the present application is: an environment-friendly sludge treatment equipment for pile foundation construction, comprising a base, a flocculation tank, a water collecting tank, a spiral stacking main shaft and spiral stacking plates; the base is fixedly connected with the flocculation tank; the base is fixedly connected with the water collecting tank; the water collecting tank is provided with a discharge hole; the water collecting tank is rotatably connected with the spiral stacking main shaft, and the spiral stacking main shaft is fixedly connected with the output shaft of the driving motor installed on the water collecting tank, and the spiral stacking main shaft penetrates through the discharge hole; the spiral stacking main shaft is connected with a plurality of spiral stacking plates; further comprising a connecting plate, a spring rod, a back pressure plate, a connecting ring and a limiting strip; the spiral stacking main shaft is connected with the connecting plate; the connecting plate is fixedly connected with a plurality of spring rods; the extension end of each spring rod is fixedly connected with a back pressure plate, and the back pressure plate is connected with the spiral stacking main shaft, and all the back pressure plates are slidably connected with each other; the connecting plate is fixedly connected with the connecting ring; the connecting ring is provided with a sliding groove; each back pressure plate is fixedly connected with a limiting strip sliding in the sliding groove.

[0006] More preferably, further comprising a circular plate, an air cylinder and an air bag I; the spiral stacking main shaft is connected with the circular plate; the circular plate is fixedly connected with a plurality of air cylinders, and the extension ends of all the air cylinders are fixedly connected with the connecting plate; a plurality of air bags I are fixedly connected in the sliding groove, and the number and position of the air bags I are consistent with the back pressure plates, and the air bags I are in contact with the corresponding limiting strips.

[0007] More preferably, further comprising an elastic cloth; each back pressure plate is provided with two inclined surfaces on the side facing the discharge hole, and the inclined surfaces are located at the edges of the contacting two back pressure plates; each inclined surface is fixedly connected with an elastic cloth fixedly connected with the adjacent back pressure plate.

[0008] More preferably, a motor, a gear I, a gear II, an elastic ring, a fixed rod, a connecting rod, a scraping rod and a scraping spike; the water collecting tank is fixedly connected with the motor; the output shaft of the motor is fixedly connected with the gear I; the spiral stacking main shaft is fixedly connected with the gear II, and the gear II is engaged with the gear I; the spiral stacking main shaft is provided with an annular groove; the spiral stacking main shaft is fixedly connected with a plurality of fixed rods located in the annular groove; the spiral stacking main shaft is fixedly connected with an elastic ring, and the elastic ring is located in the annular groove; the elastic ring is provided with a plurality of circular holes; the spiral stacking main shaft is slidably connected with a connecting rod; the connecting rod is fixedly connected with a plurality of scraping rods distributed in a ring shape, and the scraping rods penetrate through the corresponding circular holes; each scraping rod is fixedly connected with a plurality of scraping spikes on the side facing the back pressure plate.

[0009] More preferably, further comprising a guide plate; the water collecting tank is fixedly connected with the guide plate, and the guide plate is located outside the back pressure plate.

[0010] More preferably, further comprising a rotating ring; the spiral stacking main shaft is hollow; the spiral stacking main shaft is provided with a through hole; the water collecting tank is fixedly connected with the rotating ring, and the rotating ring is rotatably connected with the spiral stacking main shaft, and the rotating ring is in communication with the through hole, and there is a gap between the scraping rod and the circular hole.

[0011] More preferably, further comprising an air bag II; the connecting rod is fixedly connected with the air bag II, and the air bag II is fixedly connected with the scraping rod; the spiral stacking main shaft is provided with a pump, and the pump is in communication with the air bag II.

[0012] More preferably, the protruding part is arranged on the end of each scraper rod close to the air bag II.

[0013] More preferably, the electric heating rod is arranged on each back pressure plate.

[0014] More preferably, the electric push rod and the poking rod are arranged, the water collecting tank is fixedly connected with the electric push rod, the telescopic end of the electric push rod is fixedly connected with the poking rod, the poking rod is slidably connected with the guide plate, and the poking rod is located on the lower side of the guide plate.

[0015] Compared with the prior art, the present application has the following advantages: each back pressure plate can be individually slid on the main shaft of the stacked screw, so that when hard sludge is encountered, one of the back pressure plates is individually moved away from the discharge hole under the extrusion of the hard sludge, the corresponding spring rod is compressed, the corresponding back pressure plate drives the limiting strip to slide in the sliding groove, so as to increase the gap between the corresponding back pressure plate and the discharge hole, while the other back pressure plates remain in place, so that the hard sludge and the soft sludge are extruded through different back pressure plates, avoiding the problem that when the hard sludge and the soft sludge are mixed and extruded together, the back pressure plate moves as a whole, causing the soft sludge to become thin when it is extruded.

[0016] When the back pressure plate is found to be adhered with more sludge by artificial discovery, the motor is controlled to stop, so that the back pressure plate stops and rotates synchronously with the main shaft of the stacked screw, and then the back pressure plate moves relatively with the scraper rod and the scraper, and then the scraper rod and the scraper remove the sludge adhered on the back pressure plate.

[0017] By arranging the inclined surface part on the side of each back pressure plate facing the discharge hole, the extruded sludge is guided during the rotation of the back pressure plate, facilitating the discharge of the sludge, and by arranging the elastic cloth fixedly connected with the adjacent back pressure plate on the inclined surface part, when the back pressure plate is individually moved and exposes the inclined surface part on the adjacent back pressure plate, the gap between the adjacent back pressure plates can be sealed by pulling the elastic cloth on the adjacent back pressure plate, avoiding the phenomenon that the gravel is stuck and causes difficulty in moving. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure schematic view of the sludge treatment equipment for pile foundation construction of the environment-friendly type disclosed by the present application; Figure 2 The sectional view of the water collecting tank disclosed by the present application; Figure 3 The combined partial structure schematic view of the connecting plate, the spring rod and the back pressure plate disclosed by the present application; Figure 4 The combined partial structure schematic view of the spring rod, the back pressure plate, the connecting ring, the circular plate and the air cylinder disclosed by the present application; Figure 5The present invention discloses Figure 4 Enlarged view of point A; Figure 6 This is a state diagram showing the independent movement of the back pressure plate disclosed in this invention; Figure 7 This is a partial structural diagram of the combination of the motor, gear I, gear II, and circular plate disclosed in this invention. Figure 8 This is a partial structural diagram of the combination of the rotating ring, airbag II, and electric heating rod disclosed in this invention.

[0019] The components in the attached diagram are labeled as follows: 1-Base, 2-Flocculation box, 3-Water collection box, 4-Screw stack main shaft, 5-Screw stack plate, 101-Connecting plate, 102-Spring rod, 103-Back pressure plate, 104-Connecting ring, 105-Limiting strip, 106-Circular plate, 107-Cylinder, 108-Airbag I, 109-Elastic cloth, 1010-Motor, 1011-Gear I, 1012-Gear II 1013-Elastic ring, 1014-Fixing rod, 1015-Connecting rod, 1016-Scraper rod, 1017-Scraper bar, 1018-Guide plate, 201-Rotating ring, 202-Airbag II, 203-Electric heating rod, 204-Electric push rod, 205-Stamping rod, 11-Round hole, 30-Discharge hole, 31-Beveled part, 40-Through hole, 41-Slide groove, 42-Annular groove, 61-Protrusion. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: An environmentally friendly sludge treatment device for pile foundation construction, such as... Figures 1-8 As shown, it includes a base 1, a flocculation box 2, a water collection box 3, a screw press main shaft 4, and screw press plates 5; the base 1 is fixedly connected to the flocculation box 2; the base 1 is fixedly connected to the water collection box 3; the water collection box 3 has a discharge hole 30; the water collection box 3 is rotatably connected to the screw press main shaft 4, and the screw press main shaft 4 is fixedly connected to the output shaft of the drive motor installed on the water collection box 3, and the screw press main shaft 4 passes through the discharge hole 30; the screw press main shaft 4 is connected to several screw press plates 5; Further comprising connecting plate 101, spring rod 102, back pressure plate 103, connecting ring 104 and limiting strip 105; connecting plate 101 is connected with stack screw main shaft 4; six spring rods 102 are fixedly connected with connecting plate 101; the telescopic end of each spring rod 102 is fixedly connected with one back pressure plate 103, and the back pressure plate 103 is connected with stack screw main shaft 4, and all the back pressure plates 103 are slidingly connected, and all the back pressure plates 103 jointly form a complete circle; connecting plate 101 is fixedly connected with connecting ring 104; connecting ring 104 is provided with sliding groove 41; each back pressure plate 103 is fixedly connected with one limiting strip 105, and the limiting strip 105 slides in the sliding groove 41.

[0022] Further comprising round plate 106, air cylinder 107 and air bag I 108; round plate 106 is connected with stack screw main shaft 4; two air cylinders 107 are fixedly connected with round plate 106, and the telescopic ends of all the air cylinders 107 are fixedly connected with connecting plate 101; a plurality of air bag I 108 are fixedly connected in sliding groove 41, and the number and position of air bag I 108 are consistent with back pressure plate 103, and air bag I 108 is in contact with corresponding limiting strip 105.

[0023] Further comprising elastic cloth 109; each back pressure plate 103 is provided with two inclined surfaces 31 on the side facing discharge hole 30, and the inclined surfaces 31 are located at the edges of the contacting two back pressure plates 103; each inclined surface 31 is fixedly connected with one elastic cloth 109, and the elastic cloth 109 is fixedly connected with the adjacent back pressure plate 103.

[0024] Motor 1010, gear I 1011, gear II 1012, elastic ring 1013, fixed rod 1014, connecting rod 1015, scraping rod 1016 and scraping 1017; water collecting tank 3 is bolted with motor 1010; the output shaft of motor 1010 is fixedly connected with gear I 1011; stack screw main shaft 4 is fixedly connected with gear II 1012, and gear II 1012 is engaged with gear I 1011; stack screw main shaft 4 is provided with annular groove 42; a plurality of fixed rods 1014 are fixedly connected with stack screw main shaft 4, and the fixed rods 1014 are located in annular groove 42; stack screw main shaft 4 is fixedly connected with elastic ring 1013, and the elastic ring 1013 is located in annular groove 42; a plurality of round holes 11 are provided in elastic ring 1013; connecting rod 1015 is slidingly connected in stack screw main shaft 4; a plurality of scraping rods 1016 are fixedly connected with connecting rod 1015 in a ring shape, and the scraping rods 1016 pass through corresponding round holes 11; a plurality of scraping 1017 are fixedly connected with each scraping rod 1016, and the scraping 1017 are located on the side facing back pressure plate 103.

[0025] Also includes the guide plate 1018; the water collecting tank 3 is fixed with the guide plate 1018, and the guide plate 1018 is located outside the back pressure plate 103, in order to avoid the sludge from the discharge hole 30 extrusion when the four around scattered not convenient collection, therefore in the back pressure plate 103 outside setting guide plate 1018, the extruded sludge is limited to flow.

[0026] In use, the external air pump is communicated to the air bag I 108, the material hopper is placed below the discharge hole 30, then the sludge to be treated is introduced into the air bag I 108 to the flocculation tank 2 for flocculation and sedimentation, and then the flocculated sludge is sent into the water collecting tank 3 for solid-liquid separation through the flocculation tank 2, the driving motor is controlled to drive the main shaft 4 of the spiral to rotate to transport the sludge obliquely upward, and the main shaft 4 of the spiral drives the spiral plate 5 to reciprocatingly extrude the sludge at intervals to reduce the water content of the sludge, and the main shaft 4 of the spiral rotates to drive the back pressure plate 103 to rotate, and as the sludge continuously obliquely upward, the sludge is finally extruded from the discharge hole 30 under the extrusion and limitation of the back pressure plate 103.

[0027] In the process of extruding the sludge from the discharge hole 30 under the extrusion and limitation of the back pressure plate 103, since well drilling is usually required in building pile construction, the sludge generated comes from different rock layers, and the hardness, viscosity and other characteristics differ greatly, and when the sludge with different characteristics is mixed and flocculated and then extruded through the main shaft 4 of the spiral, the hardness of the mixed sludge after dewatering and drying is different, although the existing technology can adjust the gap between the back pressure plate 103 and the discharge hole 30 in real time to adapt to sludge with different hardness, the back pressure plate 103 is adjusted as a whole, if the mixed sludge has soft sludge and hard sludge when being extruded from the discharge hole 30, the harder sludge will push out the back pressure plate 103 to increase the extrusion gap, resulting in that the soft sludge extruded from the discharge hole 30 is diluted and has a large water content, reducing the sludge treatment quality, in order to solve this problem, when the sludge is extruded from the discharge hole 30 through the gap between the back pressure plate 103 and the discharge hole 30, since each back pressure plate 103 can slide on the main shaft 4 of the spiral individually, when hard sludge is encountered, one of the back pressure plates 103 moves to the side away from the discharge hole 30 under the extrusion of the hard sludge, the corresponding spring rod 102 is compressed, the corresponding back pressure plate 103 drives the limiting strip 105 to slide in the sliding groove 41 to increase the gap between the corresponding back pressure plate 103 and the discharge hole 30, and the other back pressure plates 103 remain in place, so that the hard sludge and the soft sludge are extruded through different back pressure plates 103, avoiding the problem that when the hard sludge and the soft sludge are mixed and then extruded together, the back pressure plate 103 moves as a whole to cause the soft sludge to be diluted when being extruded.

[0028] Considering that the overall hardness of different batches and types of sludge is different, when extruding different batches and types of sludge, the gap between the overall back pressure plate 103 and the discharge hole 30 needs to be adjusted to improve the adaptability of the equipment. At this time, first, control the external air pump to inflate the air bag 108, so that the air bag 108 expands to limit the limiting strip 105, thereby relatively fixing the back pressure plate 103, the connecting ring 104 and the limiting strip 105. Then, by controlling the air cylinder 107 to drive the connecting plate 101, the connecting ring 104 and the overall back pressure plate 103 to slide on the stacking screw main shaft 4, the gap between the back pressure plate 103 and the discharge hole 30 is adjusted as a whole to adapt to different batches and types of sludge.

[0029] Further, after one of the back pressure plates 103 moves alone, a convex step is formed between the back pressure plate 103 and its adjacent back pressure plate 103, as shown in Figure 6 When the back pressure plate 103 rotates with the stacking screw main shaft 4, the sludge is easily left on the back pressure plate 103 that moves alone. To solve this problem, a bevel part 31 is provided on the side of each back pressure plate 103 facing the discharge hole 30, which guides the extruded sludge during the rotation of the back pressure plate 103, facilitating the discharge of the sludge. Moreover, there are many impurities such as sand and gravel in the sludge in the construction pile foundation construction, and the back pressure plates 103 slide with each other, so that the sand and gravel are easily stuck in the gap between the back pressure plates 103. Therefore, by providing an elastic cloth 109 fixed with the adjacent back pressure plate 103 on the bevel part 31, when the back pressure plate 103 moves alone and exposes the bevel part 31 on the adjacent back pressure plate 103, the gap between the adjacent back pressure plates 103 can be sealed by pulling the elastic cloth 109 on the adjacent back pressure plate 103, avoiding the phenomenon that the sand and gravel are stuck and cause difficulty in moving.

[0030] In order to solve the problem that the sludge is easy to adhere to the back pressure plate 103 when the viscosity of the sludge is large, the gap between the back pressure plate 103 and the discharge hole 30 is small, and the risk of blockage is brought, the motor 1010 is controlled to start in normal work, the output shaft of the motor 1010 drives the gear I 1011 to rotate, the gear I 1011 drives the gear II 1012 to rotate, the gear II 1012 drives the circular plate 106, the air cylinder 107, the connecting plate 101, the back pressure plate 103, the connecting ring 104 to rotate, so that the back pressure plate 103 and the stacked screw main shaft 4 keep synchronous rotation, and the stacked screw main shaft 4 always drives the elastic ring 1013, the fixed rod 1014, the connecting rod 1015, the scraper rod 1016 and the scraper 1017 to rotate synchronously, when the back pressure plate 103 is found to adhere to more sludge by manual, the motor 1010 is controlled to stop, so that the back pressure plate 103 stops synchronous rotation with the stacked screw main shaft 4, and then the back pressure plate 103 and the scraper rod 1016 and the scraper 1017 produce relative motion, and then the scraper rod 1016 and the scraper 1017 scrape off the sludge adhered to the back pressure plate 103, and the elastic ring 1013 produces adaptive deformation when the back pressure plate 103 moves as a whole.

[0031] As shown in Figure 3 , Figure 7 and Figure 8 , it further comprises a rotating ring 201; the stacked screw main shaft 4 is hollow; the stacked screw main shaft 4 is provided with a through hole 40; the water collecting tank 3 is fixedly connected with the rotating ring 201, and the rotating ring 201 is rotationally connected with the stacked screw main shaft 4, and the rotating ring 201 is in communication with the through hole 40, and there is a gap between the scraper rod 1016 and the circular hole 11.

[0032] Further comprising an air bag II 202; the connecting rod 1015 is fixedly connected with the air bag II 202, and the air bag II 202 is fixedly connected with the scraper rod 1016; the stacked screw main shaft 4 is provided with a pump, and the pump is in communication with the air bag II 202.

[0033] Further comprising a protruding part 61; each of the scraper rods 1016 is provided with a protruding part 61 at one end close to the air bag II 202, and the diameter of the protruding part 61 is consistent with the circular hole 11.

[0034] Further comprising an electric heating rod 203; each of the back pressure plates 103 is fixedly connected with an electric heating rod 203.

[0035] Further comprising an electric push rod 204 and a poking rod 205; the water collecting tank 3 is bolted with the electric push rod 204; the telescopic end of the electric push rod 204 is fixedly connected with the poking rod 205, and the poking rod 205 is slidingly connected with the guide plate 1018, and the poking rod 205 is located on the lower side of the guide plate 1018.

[0036] Considering that part of the sludge will be accompanied by foul gas during the extrusion process, polluting the surrounding air environment, in order to solve this problem, the external suction pump is communicated with the rotating ring 201, and during the sludge extrusion process, the external pump is controlled to suck the main shaft 4 of the spiral through the rotating ring 201 and the through hole 40, and then the foul gas in the sludge is sucked away through the round hole 11 when the sludge is just extruded from the discharge hole 30.

[0037] Because the sludge is easy to block the round hole 11 during the extrusion process, so that the foul gas cannot pass through the round hole 11, the pump is controlled to start regularly, so that the pump reciprocatingly sucks and inflates the air bag II 202, so that the air bag II 202 reciprocatingly expands and shrinks, and then drives the scraper rod 1016 to reciprocatingly move in the round hole 11, and then dredges the round hole 11, ensuring smooth suction.

[0038] When processing sludge without obvious odor, stop sucking the main shaft 4 of the spiral, at this time, control the pump to inflate the air bag II 202, so that the air bag II 202 expands and drives the scraper rod 1016 to move outward until the protruding part 61 is inserted into the round hole 11 to block.

[0039] Because the sludge generated in the construction pile foundation drilling construction will have oil stains, so that the oil stains are easy to adhere to the back pressure plate 103 when the sludge is extruded through the main shaft 4 of the spiral, and the oil stains are difficult to be removed by the scraper rod 1016 and the scraper 1017 in winter. In order to solve this problem, during the sludge extrusion process, the electric heating rod 203 is electrified, so that the electric heating rod 203 heats each back pressure plate 103 through heat transfer, so that the back pressure plate 103 heats and softens the adhered oil stains, reducing the adhesion of oil stains on the back pressure plate 103.

[0040] Considering that when the sludge is extruded from the gap between the discharge hole 30 and the back pressure plate 103, most of the sludge falls from the lower side of the guide plate 1018 under the action of gravity, so that the sludge is easy to accumulate on the lower side of the guide plate 1018, causing the sludge to be discharged. In order to solve this problem, during the sludge extrusion process, the electric push rod 204 is controlled to drive the poking rod 205 to move vertically and reciprocally, so that the poking rod 205 reciprocatingly pokes the sludge on the lower side of the guide plate 1018, so that the sludge is loose, facilitating the discharge of the sludge.

[0041] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that changes can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly sludge treatment device for pile foundation construction, comprising a base (1), a flocculation box (2), a water collection box (3), a screw press main shaft (4), and screw press plates (5); the base (1) is fixedly connected to the flocculation box (2); the base (1) is fixedly connected to the water collection box (3); the water collection box (3) has a discharge hole (30); the water collection box (3) is rotatably connected to the screw press main shaft (4), and the screw press main shaft (4) is fixedly connected to the output shaft of a drive motor installed on the water collection box (3), and the screw press main shaft (4) passes through the discharge hole (30); the screw press main shaft (4) is connected to several screw press plates (5); its characteristic is: It also includes a connecting plate (101), a spring rod (102), a back pressure plate (103), a connecting ring (104), and a limiting strip (105); the stacked screw main shaft (4) is connected to the connecting plate (101); the connecting plate (101) is fixedly connected to several spring rods (102); each spring rod (102) has a back pressure plate (103) fixedly connected to its telescopic end, and the back pressure plate (103) is connected to the stacked screw main shaft (4), and all the back pressure plates (103) are slidably connected to each other; the connecting plate (101) is fixedly connected to the connecting ring (104); the connecting ring (104) has a groove (41); each back pressure plate (103) is fixedly connected to a limiting strip (105) that slides in the groove (41).

2. The environmentally friendly sludge treatment equipment for pile foundation construction according to claim 1, characterized in that: It also includes a circular plate (106), a cylinder (107) and an airbag I (108); the stacked screw spindle (4) is connected to the circular plate (106); the circular plate (106) is fixedly connected to several cylinders (107), and the telescopic ends of all cylinders (107) are fixedly connected to the connecting plate (101); several airbags I (108) are fixedly connected in the slide groove (41), and the number and position of airbags I (108) are consistent with the back pressure plate (103), and airbags I (108) are in contact with the corresponding limit strip (105).

3. The environmentally friendly sludge treatment equipment for pile foundation construction according to claim 1, characterized in that: It also includes elastic cloth (109); each back pressure plate (103) has two inclined surfaces (31) on the side facing the discharge hole (30), and the inclined surfaces (31) are located at the edge where the two back pressure plates (103) are in contact; each inclined surface (31) is fixedly connected to an elastic cloth (109) that is fixedly connected to the adjacent back pressure plate (103).

4. The environmentally friendly sludge treatment equipment for pile foundation construction according to claim 3, characterized in that: Motor (1010), Gear I (1011), Gear II (1012), Elastic Ring (1013), Fixed Rod (1014), Connecting Rod (1015), Scraper Rod (1016), and Scraper Bar (1017); Motor (1010) is fixedly connected to the water collection tank (3); Gear I (1011) is fixedly connected to the output shaft of Motor (1010); Gear II (1012) is fixedly connected to the stacked screw main shaft (4), and Gear II (1012) meshes with Gear I (1011); The stacked screw main shaft (4) has an annular groove (42); The stacked screw main shaft (4) is fixedly connected to several positions A fixed rod (1014) is located in the annular groove (42); an elastic ring (1013) is fixedly connected to the stacked screw main shaft (4), and the elastic ring (1013) is located in the annular groove (42); the elastic ring (1013) has several round holes (11); a connecting rod (1015) is slidably connected in the stacked screw main shaft (4); a number of annularly distributed scrapers (1016) are fixedly connected to the connecting rod (1015), and the scrapers (1016) pass through the corresponding round holes (11); a number of scraper burrs (1017) are fixedly connected to the side of each scraper (1016) facing the back pressure plate (103).

5. The environmentally friendly sludge treatment equipment for pile foundation construction according to claim 1, characterized in that: It also includes a guide plate (1018); the water collection tank (3) is fixedly connected to the guide plate (1018), and the guide plate (1018) is located outside the back pressure plate (103).

6. The environmentally friendly sludge treatment equipment for pile foundation construction according to claim 5, characterized in that: It also includes a rotating ring (201); the stacked screw main shaft (4) is hollow; the stacked screw main shaft (4) has a through hole (40); the water collection tank (3) is fixedly connected to the rotating ring (201), and the rotating ring (201) is rotatably connected to the stacked screw main shaft (4), and the rotating ring (201) is connected to the through hole (40), and there is a gap between the scraper (1016) and the round hole (11).

7. An environmentally friendly sludge treatment device for pile foundation construction according to claim 6, characterized in that: It also includes an airbag II (202); the connecting rod (1015) is fixedly connected to the airbag II (202), and the airbag II (202) is fixedly connected to the scraper (1016); the stacked screw main shaft (4) is equipped with a pump, and the pump is connected to the airbag II (202).

8. An environmentally friendly sludge treatment device for pile foundation construction according to claim 7, characterized in that: It also includes a protrusion (61); each scraper (1016) has a protrusion (61) that is consistent with the round hole (11) at one end near the airbag II (202).

9. An environmentally friendly sludge treatment device for pile foundation construction according to claim 1, characterized in that: It also includes an electric heating rod (203); each back pressure plate (103) is fixed with an electric heating rod (203).

10. An environmentally friendly sludge treatment device for pile foundation construction according to claim 5, characterized in that: It also includes an electric push rod (204) and a poking rod (205); the water collection tank (3) is fixedly connected to the electric push rod (204); the telescopic end of the electric push rod (204) is fixedly connected to the poking rod (205), and the poking rod (205) is slidably connected to the guide plate (1018), and the poking rod (205) is located on the lower side of the guide plate (1018).

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