A towed underwater surface semi-settled silt removal device

Abstract

The present invention relates to the technical field of underwater sewage pumping equipment, and discloses a towing type underwater surface semi-settled sludge removal device, comprising a sewage pumping mechanism, the sewage pumping mechanism is softly connected to the ship through a towing mechanism on the ship, and is towed forward by the ship so that the sewage pumping port is located on the surface of the sludge, the towing mechanism comprises a bottom plate, a forward tilting plate and a sewage pumping bin, and a mud scraping and crushing device is provided at the sewage pumping port of the sewage pumping bin, the mud scraping and crushing device comprises two rotating shafts, a plurality of rolling blades are fixedly mounted on the two rotating shafts, and the two rotating shafts rotate in opposite directions to scrape the surface sludge to the sewage pumping port of the sewage pumping bin, and crush the solid matter in the sludge. A sewage pump is provided on the top of the vacuum bin, and the semi-settled sludge on the surface of the sludge is pumped into the cabin by the negative pressure when the sewage pump is started, which is specifically aimed at removing the thin sludge on the surface of the sludge that is most harmful to water quality, so as to achieve the purpose of improving water quality.

Description

Technical Field

[0001] The present application relates to the technical field of underwater sewage pumping equipment, and in particular to a towed underwater surface semi-settled sludge removal device. Background Art

[0002] Water pollution is a common problem in today's society. Pollutants on the water surface are easy to clean, while pollutants that settle to the bottom of lakes are difficult to clean. Pollutants at the bottom of the water will easily decompose faster when the temperature rises, and release decomposed organic nutrients into the water body at a faster rate, causing rapid eutrophication of the water body in a short period of time. The rapid proliferation of microorganisms leads to deterioration of water quality. This is the main reason why water pollution is difficult to control.

[0003] The existing underwater pollutant treatment usually only uses a sewage pump to pump out the sewage at the bottom of the water, and then pumps out and discharges the polluted sludge at the bottom of the water. This can easily result in a larger proportion of water and a smaller proportion of solid pollutants when controlling the sewage discharge volume, leading to low sewage pumping efficiency. In addition, solid pollutants can easily cause blockages in sewage pumping and discharge pipelines. Summary of the invention

[0004] The present application proposes a towed underwater surface semi-settled sludge removal device, which has the advantages of high sewage pumping efficiency and low blockage of sewage pumping and sewage discharge pipelines, and is used to solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a towed underwater surface semi-settled sludge removing device, including a sewage pumping mechanism composed of a bottom plate and a forward inclined plate, the sewage pumping mechanism is connected to the ship through a towing mechanism, a sewage pumping bin is provided at the top of the connection between the bottom plate and the forward inclined plate, a sewage inlet trough is provided at the bottom of the sewage pumping bin, a sewage pump is provided on the top of the bottom plate, the sewage pump pumps the pollutants in the sewage pumping bin to the ship, a mud scraping and crushing device is provided in the sewage pumping bin, the mud scraping and crushing device scrapes the mixture of sludge and water to the sewage pumping port of the sewage pump and crushes the solid pollutants.

[0006] Furthermore, the mud scraping and crushing device includes two rotating shafts arranged in the sewage suction bin, and a plurality of rolling blades are fixedly mounted on the two rotating shafts respectively, and the plurality of rolling blades are distributed in a curved drive array on the cylindrical surface of the rotating shaft, and the rolling blades on the two rotating shafts are arranged in an alternating manner in sequence, and the rotating shafts are driven to rotate by a driving unit arranged outside the sewage suction bin.

[0007] Furthermore, the sewage extraction bin is provided with bearing sleeves respectively located above the two rolling blades, and a gap is reserved between the two bearing sleeves.

[0008] Furthermore, a first hydraulic rod is provided at the bottom of the tilting plate, a piston shaft of the first hydraulic rod is fixedly connected with a cutter facing the rolling blade, and the cutting edge of the cutter is attached to the bottom of the tilting plate, and the cutting edge of the cutter is offset from the rolling blade.

[0009] Furthermore, the sewage extraction bin includes a frame plate and two partitions, wherein the frame plate is fixedly mounted on the top of the connection between the bottom plate and the forward inclined plate, and the two partitions are fixedly mounted on both ends of the frame plate.

[0010] Furthermore, a support plate is fixedly installed on the top of the base plate, and the sewage pump is fixedly installed on the support plate. A conduit is fixedly connected to the middle of the top of the frame plate, one end of the conduit is connected to the inner cavity of the sewage pumping bin, and the other end of the conduit is connected to the sewage suction port of the sewage pump, and the discharge port of the sewage pump is connected to a sewage pipe.

[0011] Furthermore, two groups of brackets are fixedly installed on the top of the base plate, away from the side of the forward tilting plate, and the two groups of brackets are arranged on both sides of the support plate. A guide pressure plate is fixedly connected to each group of brackets, one side of the two guide pressure plates is facing the sewage pump, and the two guide pressure plates are inclined, and a number of water holes are opened on the forward tilting plate and located above the sewage bin.

[0012] Furthermore, the mud scraping and crushing device includes two rollers, which rotate synchronously and in opposite directions. Tooth grooves are provided on the cylindrical surfaces of the two rollers, and the tooth ends of the two rollers are close to each other but not touching. Four slide grooves are opened on the outer sides of the rollers, and the four slide grooves are distributed in a circular array on the cylindrical surfaces of the rollers, wherein two adjacent slide grooves are respectively movably fitted with a first pressure plate, and the other two adjacent slide grooves are respectively movably fitted with a second pressure plate, a linkage shaft is fixedly connected between the first pressure plate and the second pressure plate, and the two linkage shafts are staggered with each other, the second pressure plate and the linkage shaft are the same in shape and size, and the outer side of the second pressure plate is designed as an arc surface, and when the first pressure plate completely enters the slide groove, the outer arc surface of the second pressure plate just extends out of the outer side of the tooth end of the roller.

[0013] Furthermore, two positioning shafts are provided in the sewage extraction bin, and the two positioning shafts are respectively arranged on one side of the two rollers, and the two ends of the two positioning shafts are connected to the partitions on both sides of the sewage extraction bin, and filter presses are respectively movably mounted on the two positioning shafts, and the side of the filter press facing the roller is an arc surface, and the spacing value between the inner arc wall of the filter press and the tooth end of the roller is the same as the radius value of the outer arc side of the second pressure plate, and one end of the two filter presses is movably mounted with a limiting shaft close to the sewage inlet groove, and an arc groove movably mounted on the inner wall of the partition is provided with an arc groove movably mounted on one end of the limiting shaft, and the arc groove limits the movement of the limiting shaft so that the filter press can stably rotate with the positioning shaft as the axis, and an elastic telescopic rod is fixedly installed on the inner wall of the partition, and one end of the elastic telescopic rod is rotatably connected to one side of the filter press, and a through groove close to the sewage inlet groove is provided on the filter press.

[0014] Further, the towing mechanism includes a fixed frame, which is fixedly installed on the ship, one end of the fixed frame is rotatably connected to a first connecting plate, and the end of the first connecting plate away from the fixed frame is rotatably connected to a swing connecting rod, the bottom of the fixed frame is rotatably connected to a second hydraulic rod, the output shaft of the second hydraulic rod is rotatably connected to a triangular connecting plate, and one corner of the triangular connecting plate is rotatably connected to an end of the first connecting plate away from the swing connecting rod, the other corner of the triangular connecting plate is rotatably connected to the second connecting plate, the end of the second connecting plate away from the triangular connecting plate is rotatably connected to an end of the swing connecting rod close to the first connecting plate, the end of the swing connecting rod away from the first connecting plate is arranged with the same rotation structure as that between the swing connecting rod and the fixed frame, and the swing connecting rod at one end of the towing device away from the fixed frame is fixedly connected to the tilting plate.

[0015] Beneficial Effects

[0016] 1. The present application provides a towed underwater surface semi-settled silt removing device, which is moved by being pulled by a ship on the bottom of the water through a sewage pumping mechanism composed of a bottom plate and a forward inclined plate, and uses the bottom plate to move in the sedimentation layer on the bottom of the water, and cooperates with the negative pressure of the sewage pumping bin arranged on the sewage pumping mechanism when the sewage pumping pump is started, so that the mixed pollutants of sludge and water in the semi-settled layer on the bottom of the water are pumped to the ship, and a mud scraping and crushing device composed of a rotating shaft and a rolling blade arranged in the sewage pumping bin is used to scrape mud into the sewage pumping bin at the sewage inlet trough at the bottom of the sewage pumping bin, thereby increasing the proportion of solid pollutants during negative pressure sewage pumping per unit time, thereby improving the sewage pumping efficiency, and the two rolling blades are staggered and rotated in opposite directions during control, so as to crush general solid pollutants and avoid the problem of blockage of sewage pumping and discharge pipelines caused by large solid pollutants.

[0017] 2. The present application provides a towed underwater surface semi-settled sludge removing device, which is provided with guide pressure plates on both sides of the sewage pump on the bottom plate, and a plurality of water holes are opened on the forward inclined plate. When the sewage pumping mechanism is pulled and moved, water flows through the water holes to the guide pressure plates, and the two guide pressure plates are inclined and toward the sewage pump. The pressure of the water flow on the guide pressure plates is used to keep the sewage pumping mechanism stable during the movement, so that the sewage pumping work can be carried out normally.

[0018] 3. The present application provides a towed underwater surface semi-settled sludge removing device, which is a sludge scraping and crushing device composed of two rollers and a first pressure plate and a second pressure plate thereon, and tooth grooves are provided on the outer sides of the two rollers, so that when the two rollers rotate, the pollutants at the tooth ends of the two rollers are crushed and sheared, thereby achieving the effect of preventing solid pollutants from clogging and avoiding the problem of solid pollutants being entangled on the rotating shaft. There is no need to set up additional shearing equipment to cut off the entangled solid pollutants. After the two first pressure plates and the second pressure plates come into contact, they enter the chute under the action of the extrusion force, so that the outer arc sides of the first pressure plates and the second pressure plates are retracted into the chute, reducing the amount of pollutants thrown to both sides, allowing more pollutants to enter the conduit, thereby increasing the proportion of pollutants without changing the sewage discharge flow rate, thereby improving the efficiency of sewage extraction, and avoiding the problem of low sewage extraction efficiency caused by a large proportion of water during sewage extraction and discharge.

[0019] 4. The present application provides a towed underwater surface semi-settled sludge removing device, which is configured by arranging a filter press that acts on two rollers in a sewage pumping bin, and enabling the filter press to stably rotate with a positioning axis as the axis. During the rotation of the two rollers, the two first pressure plates on the two rollers move from contact to separation, which causes the second pressure plate linked thereto to move, thereby acting on the inner arc wall of the filter press. The two second pressure plates move from contact to separation, which causes the first pressure plate linked thereto to move, thereby acting on the inner arc wall of the filter press, causing the filter press to reciprocate and swing with the positioning axis as the axis, and cooperate with the two first pressure plates when squeezing each other to squeeze the sludge and water in the interval to a certain extent, so that the water can be discharged, thereby increasing the proportion of sludge passing between the two rollers, reducing the proportion of water, and further improving the sludge extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0021] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the towed underwater surface semi-settled sludge removal device of the present invention;

[0023] Figure 2 This is a schematic diagram of the front cross-section structure of the sewage extraction bin in the first embodiment of the present invention;

[0024] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of the central rotating shaft and the hob blade;

[0025] Figure 4 This is a schematic diagram of the front cross-section structure of the sewage extraction bin in the second embodiment of the present invention;

[0026] Figure 5 for Figure 4 A schematic diagram of the structure of one of the rollers;

[0027] Figure 6 This is a schematic diagram of the structure of the dragging mechanism in the release state in the third embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the structure of the retracted state of the dragging mechanism in the third embodiment of the present invention.

[0029] In the figure: 1, bottom plate; 2, forward tilting plate; 201, water hole; 3, frame plate; 4, partition; 401, arc groove; 5, rotating shaft; 6, rolling blade; 7, driving unit; 8, conduit; 9, support plate; 10, sewage pump; 11, sewage pipe; 12, bracket; 13, guide pressure plate; 14, water guide plate; 15, chain; 16, first hydraulic rod; 17, cutter; 18, bearing sleeve; 19, roller; 191, slide; 20, first pressure plate; 21, second pressure plate; 22, linkage shaft; 23, positioning shaft; 24, filter press; 241, through groove; 25, elastic telescopic rod; 26, limit shaft; 27, swing connecting rod; 28, second hydraulic rod; 29, first connecting plate; 30, fixing frame; 31, triangular connecting plate; 32, second connecting plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] Embodiment 1

[0032] See also Figure 1-Figure 2A towed underwater surface semi-settled sludge removal device comprises a sewage pumping mechanism composed of a bottom plate 1 and a forward inclined plate 2, the angle between the forward inclined plate 2 and the bottom plate 1 is between fifteen and forty-five degrees, and the two sides of the forward inclined plate 2 away from one end of the bottom plate 1 are respectively fixedly connected to the towing mechanism, and the towing mechanism is composed of a chain 15, one end of the chain 15 is fixedly connected to one side of the forward inclined plate 2, and the other end of the chain 15 is wound on a winch arranged on the ship, a frame plate 3 is fixedly connected to the top of the connection between the bottom plate 1 and the forward inclined plate 2, and the two ends of the frame plate 3 are respectively fixedly connected to partitions 4, and the frame plate 3 and the partitions 4 form a sealed sewage pumping bin at the connection between the bottom plate 1 and the forward inclined plate 2, a sewage inlet trough is provided at the bottom of the connection between the bottom plate 1 and the forward inclined plate 2, and a mud scraping and crushing device is arranged in the sewage pumping bin, and the mud scraping and crushing device comprises two rotating shafts 5, and a plurality of roller blades 6 are respectively fixedly mounted on the two rotating shafts 5, see Figure 3 The number of the hob blades 6 is not less than two, and the plurality of hob blades 6 are arranged in a curve drive array on the cylindrical surface of the rotating shaft 5, and the hob blades 6 on the two rotating shafts 5 are arranged alternately in sequence, see Figure 1-Figure 3 , driving units 7 are respectively provided on the two partitions 4, and the output shafts of the two driving units 7 extend into the sewage pumping bin and are fixedly connected to the two rotating shafts 5. The two rotating shafts 5 are driven by the driving units 7 to drive the rolling blades 6 to rotate, which play the role of scraping mud into the sewage pumping bin at the sewage inlet trough at the bottom of the sewage pumping bin, thereby increasing the proportion of solid pollutants during negative pressure sewage pumping per unit time, thereby improving the sewage pumping efficiency, and the two rolling blades 6 are staggered with each other, and the rotation directions are opposite when controlled to rotate, so as to crush general solid pollutants and avoid the problem of blockage of sewage pumping and discharge pipelines caused by large solid pollutants.

[0033] Please continue to refer to 1- Figure 2 A conduit 8 is fixedly connected to the middle of the top of the frame plate 3, one end of the conduit 8 is connected to the inner cavity of the sewage pumping bin, a support plate 9 is fixedly installed on the top of the bottom plate 1, and a sewage pump 10 is fixedly installed on the support plate 9. The sewage suction port of the sewage pump 10 is connected to the end of the conduit 8 away from the frame plate 3, and the discharge port of the sewage pump 10 is connected to a sewage discharge pipe 11. The end of the sewage discharge pipe 11 away from the sewage pump 10 is connected to the sewage collecting bin of the ship along the forward inclined plate 2. By starting the sewage pump 10 to pump sewage, a continuous negative pressure is formed in the sewage pumping bin, and sludge and water enter through the sewage inlet trough at the bottom of the sewage pumping bin and are pumped to the sewage collecting bin of the ship through the sewage discharge pipe 11.

[0034] Two groups of brackets 12 are fixedly installed on the top of the bottom plate 1, away from one side of the front tilting plate 2, and the two groups of brackets 12 are arranged on both sides of the support plate 9. A guide pressure plate 13 is fixedly connected to each group of brackets 12. One side of the two guide pressure plates 13 faces the sewage pump 10, and the two guide pressure plates 13 are inclined. A plurality of water holes 201 located above the sewage pumping bin are opened on the front tilting plate 2. The number of water holes 201 is not less than two. When the ship is traveling on the bottom of the water by pulling the sewage pumping mechanism through the towing mechanism, that is, Figure 2 During the movement to the right side, the water flows through the water hole 201 and flows to the guide pressure plate 13. The two guide pressure plates 13 are inclined and face the sewage pump 10. The pressure of the water flow on the guide pressure plate 13 is used to keep the sewage pumping mechanism stable during the movement, so as to carry out the sewage pumping work normally. Furthermore, the two sides of the top of the forward inclined plate 2 are respectively fixedly connected with the water guide plates 14, and the tops of the two water guide plates 14 are inclined toward the outside of the forward inclined plate 2. When the sewage pumping mechanism moves on the bottom of the water, the water flowing through the water hole 201 can effectively act on the guide pressure plate 13.

[0035] See also Figure 2 A bearing sleeve 18 is provided in the sewage pumping bin, which is respectively located above the two rolling blades 6. A gap is reserved between the two bearing sleeves 18 to allow pollutants and water to enter the conduit 8 and be pumped into the sewage collecting bin of the ship. The bottom of the bearing sleeve 18 is close to the outer side of the rolling blade 6 but not in contact with it.

[0036] A plurality of first hydraulic rods 16 are provided at the bottom of the tilt plate 2, and the number of the first hydraulic rods 16 is not less than two. The piston shaft of each first hydraulic rod 16 is fixedly connected with a cutter 17 facing the roller blade 6, and the cutting edge of the cutter 17 is attached to the bottom of the tilt plate 2, and the cutting edge of the cutter 17 is misaligned with the roller blade 6. The cutter 17 is driven by the first hydraulic rod 16 to move toward the roller blade 6, thereby cutting off the solid winding stuck on the roller blade 6.

[0037] When the towed underwater surface semi-settled sludge removing device is in use, one end of the chain 15 is connected to the winch of the ship, the sewage pumping mechanism is released to the bottom of the water by the winch, and then the ship moves on the water surface, thereby pulling the sewage pumping mechanism to move together. At the same time, the sewage pump 10 is started to pump negative pressure into the sewage pumping bin, and the driving unit 7 is started to drive the two rotating shafts 5 in the sewage pumping bin to drive the roller blade 6 to rotate, so that the mixture of sludge and water at the bottom of the water enters through the sewage inlet trough at the bottom of the sewage pumping bin, and is sent to the sewage pumping port of the sewage pump 10 through the conduit 8, and then the sewage pump 10 pumps the mixture of sludge and water through the sewage discharge pipe 11 to the sewage collecting bin of the ship for collection and further treatment.

[0038] The present application connects the front end to the ship through a chain 15, and the ship drags the sludge removal device forward so that the sewage extraction port is located on the surface of the sludge, thereby ensuring the soft contact movement between the sewage extraction device and the bottom sludge. In addition, because the forward inclined plate adopts a large plane with a certain angle of attack, it can ensure that the sewage extraction device is always on the surface of the sludge as the underwater terrain fluctuates. The semi-settled mud on the surface of the sludge that is most harmful to water quality is sucked in a skimming manner. When being dragged forward, the water generates an upward buoyancy on the forward inclined plate, and the large-area bottom flat plate supports the bottom, so that the device will not sink into the sludge, and due to its own gravity The suction port of the sewage pumping device will always be on the surface of the silt, so that the device always pumps the thin mud on the surface of the silt. These semi-settled muds in the later sedimentation surface are equivalent to floating on land, and will be blown up when encountering strong winds and waves. The semi-settled mud is rich in a large number of animal and plant remains. Because it has not completely decayed and decomposed, it will be swept up by wind and waves and scattered in the water body when encountering wind and waves. As the water temperature rises, it accelerates its degradation, releasing decomposed humus and organic matter, causing rapid eutrophication of water quality, resulting in rapid deterioration of water quality. In severe cases, blue algae blooms are generated, causing blue algae outbreaks. Therefore, extracting these semi-settled thin muds will play a key role in improving water quality.

[0039] Embodiment 2

[0040] See also Figure 1 , 4 and Figure 5On the basis of the first embodiment and different from the structure of the scraping and crushing device in the sewage collecting bin in the first embodiment, the scraping and crushing device includes two rollers 19, the two rollers 19 are driven by the driving unit 7 arranged on the outside of the partition 4 to rotate synchronously and in opposite directions, the cylindrical surfaces of the two rollers 19 are provided with tooth grooves, and the tooth ends of the two rollers 19 are close to each other but not in contact, the outer side of the roller 19 is provided with four chute 191, and the four chute 191 is distributed in a circumferential array on the cylindrical surface of the roller 19, wherein two adjacent chute 191 are respectively movably sleeved with the first pressing plate 20, and the other two adjacent chute 191 are respectively movably sleeved with the first pressing plate 20 A second pressing plate 21 is mounted, and a linkage shaft 22 is fixedly connected between the first pressing plate 20 and the second pressing plate 21, and the two linkage shafts 22 are staggered with each other so that the movement of the two linkage shafts 22 does not affect each other. The second pressing plate 21 and the linkage shaft 22 are of the same shape and size, and the outer side of the second pressing plate 21 is designed as an arc surface. When the first pressing plate 20 completely enters the chute 191, the outer arc surface of the second pressing plate 21 just extends out of the outer side of the tooth end of the roller 19. When the pollutants and water enter the sewage inlet trough under the negative pressure in the sewage pumping bin, they are sent to the conduit 8 under the action of the rotation of the two rollers 19. At the same time, the two rollers 19 are used to The sludge is scraped and runs to one side of the conduit 8, achieving an effect similar to that in the first embodiment, that is, it is conducive to the entry of pollutants and water into the conduit 8, and the first pressing plate 20 and the second pressing plate 21 on the two rollers 19 enter the chute 191 respectively after contact, and the tooth ends of the two rollers 19 cooperate to form a shear, and the pollutants passing through the tooth ends of the two rollers 19 are crushed and sheared to achieve the effect of preventing solid pollutants from clogging, and the problem of solid objects entangled on the guide shaft in the first embodiment is avoided, and there is no need to set up an additional cutter to shear the entangled objects. After the first pressing plate 20 and the second pressing plate 21 come into contact, the first pressing plate 20 and the second pressing plate 21 are pressed under the action of the extrusion force. Entering into the slide groove 191, the outer arc sides of the first pressure plate 20 and the second pressure plate 21 are retracted into the slide groove 191, reducing the amount of pollutants thrown to both sides. Compared with the first embodiment, when the two rollers 19 rotate, more pollutants can enter the conduit 8, thereby increasing the proportion of pollutants without changing the sewage discharge flow rate, thereby improving the sewage pumping efficiency, avoiding the problem of low sewage pumping efficiency caused by a large proportion of water during sewage pumping and discharge, and, compared with the first embodiment, the driving speed of the driving unit 7 can be set to a lower state, so as to achieve high sewage pumping efficiency, thereby reducing driving energy consumption.

[0041] Two positioning shafts 23 are provided in the sewage pumping bin, and the two positioning shafts 23 are respectively arranged on one side of the two rollers 19, and the two ends of the two positioning shafts 23 are connected to the partitions 4 on both sides of the sewage pumping bin. The two positioning shafts 23 are respectively movably sleeved with filter presses 24, and the side of the filter presses 24 facing the roller 19 is an arc surface, and the spacing value between the inner arc wall of the filter press 24 and the tooth end of the roller 19 is the same as the radius value of the outer arc side of the second pressing plate 21, and one end of the two filter presses 24 is movably sleeved with a limit shaft 26 close to the sewage inlet groove. An arc groove 401 movably sleeved with one end of the limiting shaft 26 is provided on the inner wall of the partition 4. The arc groove 401 limits the movement of the limiting shaft 26, so that the filter press 24 can stably rotate around the positioning shaft 23, and the rotation angle of the filter press 24 to one side is controlled by the limitation of the arc groove 401. A through groove 241 close to the sewage inlet groove is opened on the filter press 24. An elastic telescopic rod 25 is fixedly installed on the inner wall of the partition 4, and one end of the elastic telescopic rod 25 is rotatably connected to one side of the filter press 24.

[0042] When the sewage pumping bin is under negative pressure, pollutants and water at the bottom of the water enter the sewage pumping bin through the sewage inlet trough. When the two rollers 19 rotate synchronously, when one of the first pressure plates 20 on the two rollers 19 is in contact with each other and then separated, the second pressure plate 21 connected to the first pressure plate 20 on the roller 19 through the linkage shaft 22 moves toward the outside of the slide groove 191, that is, the outer arc side of the second pressure plate 21 moves to the outside of the tooth end of the roller 19 and acts on the inner arc wall of the filter press 24. During the rotation of the two rollers 19, the filter press 24 rotates with the positioning shaft 23 as the axis until the two first pressure plates 20 are separated. Under the elastic force of the elastic telescopic rod 25, the filter press 24 resets and rotates, and at the same time, the inner arc wall of the filter press 24 acts on the second pressure plate 21, so that the linkage shaft 22 connected to the second pressure plate 21 pushes the outer arc side of the first pressure plate 20 to move out of the slide groove 191, and so on and so forth, so that the two filter presses 24 can always keep reciprocating rotation, that is, the ends of the two filter presses 24 with the through grooves 241 facing the direction between the two rollers 19, reciprocatingly swinging with the positioning shaft 23 as the axis, squeezing the sludge and water in the interval to a certain extent, so that the water can be discharged from the through grooves 241, thereby increasing the proportion of sludge passing between the two rollers 19, reducing the proportion of water, and further improving the sludge extraction efficiency.

[0043] Embodiment 3

[0044] See also Figure 1 , 6 - Figure 7On the basis of the first embodiment, the towing mechanism is different from the first embodiment in that it includes a fixing frame 30, the fixing frame 30 is fixedly installed on the ship, one end of the fixing frame 30 is rotatably connected to the first connecting plate 29, the end of the first connecting plate 29 away from the fixing frame 30 is rotatably connected to the swing link 27, the bottom of the fixing frame 30 is rotatably connected to the second hydraulic rod 28, the output shaft of the second hydraulic rod 28 is rotatably connected to the triangular connecting plate 31, and one corner of the triangular connecting plate 31 is rotatably connected to the end of the first connecting plate 29 away from the swing link 27, the other corner of the triangular connecting plate 31 is rotatably connected to the second connecting plate 32, the end of the second connecting plate 32 away from the triangular connecting plate 31 is rotatably connected to the end of the swing link 27 close to the first connecting plate 29, and the swinging The end of the connecting rod 27 away from the first connecting plate 29 is provided with the same rotating structure as that between the swing connecting rod 27 and the fixing frame 30, and the swing connecting rod 27 at the end of the towing device away from the fixing frame 30 is fixedly connected to the front tilt plate 2, replacing the chain 15 connection in the first embodiment, and the winch winding method is changed to the hydraulic drive of the second hydraulic rod 28. Compared with the first embodiment, the stability is higher, and the problem of instability due to water flow when the chain 15 connects the front tilt plate 2 and the ship, which affects the overall movement of the front tilt plate 2 and the bottom plate 1 on the bottom of the water, can be avoided. In addition, the second hydraulic rod 28 can drive the piston shaft to drive the swing connecting rod 27 to rotate to the state shown in the driving unit 7. After the sewage is pumped out, the overall structure of the bottom plate 1 and the front tilt plate 2 is recovered.

Claims

1. A towed underwater surface semi-settled sludge removal device, comprising a sewage pumping mechanism composed of a bottom plate (1) and a forward tilting plate (2), the sewage pumping mechanism being connected to a ship through a towing mechanism, a sewage pumping bin being provided at the top of the connection between the bottom plate (1) and the forward tilting plate (2), a sewage inlet trough being provided at the bottom of the sewage pumping bin, a sewage pumping pump (10) being provided at the top of the bottom plate (1), the sewage pumping pump (10) pumping pollutants in the sewage pumping bin to the ship, characterized in that: A sludge scraping and crushing device is provided in the sewage pumping bin, and the sludge scraping and crushing device scrapes the mixture of sludge and water to the sewage pumping port of the sewage pump (10) and crushes the solid pollutants; The mud scraping and crushing device comprises two rollers (19), the two rollers (19) rotate synchronously and in opposite directions, tooth grooves are provided on the cylindrical surfaces of the two rollers (19), and the tooth ends of the two rollers (19) are close to each other but not in contact, four slide grooves (191) are provided on the outer side of the roller (19), and the four slide grooves (191) are distributed in a circumferential array on the cylindrical surface of the roller (19), wherein two adjacent slide grooves (191) are respectively movably sleeved with a first pressure plate (20), and the other two adjacent slide grooves (191) are respectively sleeved with a first pressure plate (20), and the other two adjacent slide grooves (191) are sleeved with a first pressure plate (20). A second pressing plate (21) is movably mounted in each of the grooves (191); a linkage shaft (22) is fixedly connected between the first pressing plate (20) and the second pressing plate (21); the two linkage shafts (22) are mutually offset; the second pressing plate (21) and the linkage shaft (22) are of the same shape and size; and the outer side of the second pressing plate (21) is designed as an arc surface. When the first pressing plate (20) completely enters the slide groove (191), the outer arc surface of the second pressing plate (21) just extends out of the outer side of the tooth end of the roller (19); Two positioning shafts (23) are provided in the sewage extraction bin, and the two positioning shafts (23) are respectively provided on one side of the two rotating rollers (19), and the two ends of the two positioning shafts (23) are connected to the partitions (4) on both sides of the sewage extraction bin. The two positioning shafts (23) are respectively provided with filter presses (24) movably sleeved thereon, and the side of the filter presses (24) facing the rotating roller (19) is provided with an arc surface, and the spacing value between the inner arc wall of the filter presses (24) and the tooth end of the rotating roller (19) is the same as the radius value of the outer arc side of the second pressure plate (21), and one end of the two filter presses (24) is movably sleeved thereon. A limiting shaft (26) is provided near the sewage inlet groove, and an arc groove (401) movably sleeved with one end of the limiting shaft (26) is provided on the inner wall of the partition (4), and the arc groove (401) limits the movement of the limiting shaft (26) so that the filter press (24) can stably rotate around the positioning shaft (23) as the axis. An elastic telescopic rod (25) is fixedly mounted on the inner wall of the partition (4), and one end of the elastic telescopic rod (25) is rotatably connected to one side of the filter press (24). A through groove (241) near the sewage inlet groove is provided on the filter press (24).

2. The towable underwater surface semi-settled sludge removal device according to claim 1 is characterized in that: The sewage extraction bin comprises a frame plate (3) and two partition plates (4); the frame plate (3) is fixedly mounted on the top of the connection between the bottom plate (1) and the forward tilting plate (2); and the two partition plates (4) are fixedly mounted on both ends of the frame plate (3).

3. The towable underwater surface semi-settled sludge removal device according to claim 2 is characterized in that: A support plate (9) is fixedly mounted on the top of the base plate (1), and a sewage pump (10) is fixedly mounted on the support plate (9). A conduit (8) is fixedly connected to the middle of the top of the frame plate (3), one end of the conduit (8) is connected to the inner cavity of the sewage pumping bin, and the other end of the conduit (8) is connected to the sewage suction port of the sewage pump (10), and the drainage port of the sewage pump (10) is connected to a sewage discharge pipe (11).

4. The towable underwater surface semi-settled sludge removal device according to claim 3 is characterized in that: Two groups of brackets (12) are fixedly mounted on the top of the bottom plate (1) and are away from one side of the front tilting plate (2). The two groups of brackets (12) are arranged on both sides of the support plate (9). A guide pressure plate (13) is fixedly connected to each group of brackets (12). One side of the two guide pressure plates (13) faces the sewage pump (10). The two guide pressure plates (13) are arranged at an angle. The front tilting plate (2) is provided with a plurality of water holes (201) located above the sewage pumping bin.

5. The towable underwater surface semi-settled sludge removal device according to claim 1 is characterized in that: The towing mechanism comprises a fixing frame (30), the fixing frame (30) being fixedly mounted on the ship, one end of the fixing frame (30) being rotatably connected to a first connecting plate (29), one end of the first connecting plate (29) being rotatably connected to a swing connecting rod (27) away from the fixing frame (30), the bottom of the fixing frame (30) being rotatably connected to a second hydraulic rod (28), the output shaft of the second hydraulic rod (28) being rotatably connected to a triangular connecting plate (31), and one corner of the triangular connecting plate (31) being rotatably connected to the first connecting plate (29) away from the swing connecting rod ( The third connecting plate (27) is rotatably connected to one end of the triangular connecting plate (31); the other corner of the triangular connecting plate (31) is rotatably connected to a second connecting plate (32); the end of the second connecting plate (32) away from the triangular connecting plate (31) is rotatably connected to an end of the swing link (27) close to the first connecting plate (29); the end of the swing link (27) away from the first connecting plate (29) is provided with a rotation structure arrangement that is the same as that between the swing link (27) and the fixing frame (30); and the swing link (27) at the end of the towing device away from the fixing frame (30) is fixedly connected to the tilting plate (2).

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