CN112606989A

CN112606989A - Sewage suction device with integrated driving and pipeline folding and unfolding functions

Info

Publication number: CN112606989A
Application number: CN202011491803.3A
Authority: CN
Inventors: 王春; 李孝振
Original assignee: Anhui Tianjian Environmental Protection Co ltd
Current assignee: Anhui Tianjian Biological Environmental Protection Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-04-06
Anticipated expiration: 2040-12-16
Also published as: CN112606989B

Abstract

The invention relates to the field of sewage treatment equipment, in particular to a sewage suction device for integrally driving a retractable pipeline. The suction device comprises: the self-priming pump comprises a shell, a hose, a winding and unwinding drum, a winding and unwinding pipe driving mechanism, a transmission mechanism and a self-priming pump. The winding and unwinding drum comprises a rotary drum, a left baffle and a right baffle; the pipe receiving and releasing driving mechanism comprises a rotating shaft, a single-rotation reciprocating screw rod, a limiting pulley block and a motor; drive mechanism includes first sprocket, second sprocket, third sprocket, fourth sprocket, first chain and second chain, and flange joint is passed through with the non-sealed one end of rotary drum to the entry of self priming pump, and the rotatable sealing connection of rotary joint is passed through to the interface of flange and the tip of rotary drum, and the export of self priming pump communicates with the equipment of storing sewage or transporting sewage. The suction device can drive the pipeline to be rolled and adjusted in direction in the process of winding and unwinding the pipeline through a single motor, and the rotating speed matching among different structures is realized, so that the suction device is simple in structure and convenient to operate.

Description

Sewage suction device with integrated driving and pipeline folding and unfolding functions

Technical Field

The invention relates to the field of sewage treatment equipment, in particular to a sewage suction device for integrally driving a retractable pipeline.

Background

During operation, a large amount of domestic sewage and waste materials are generated by ships, and the sewage and waste materials comprise sewage and waste materials generated in personnel or article cleaning processes, sewage and waste materials generated in cooking processes, excrement generated in personnel excretion processes and the like. These contaminants typically flow into the domestic sewage storage tank through the sewer system on the vessel. Because the ship can not carry out harmless treatment on the living needs, the ship can discharge pollutants in a living sewage storage tank after being supplied to the shore; or a special sewage transfer ship is used for extracting and transferring the sewage in the ship in the sailing process.

The existing ship sewage storage tank is simple in structure, only serves as a temporary storage container for pollutants, and is sucked and discharged by a dung suction truck when the ship sewage storage tank is in shore or transported, so that pollutant pretreatment cannot be carried out. The domestic sewage often contains a large amount of organic matters, and the pollutants can be biologically fermented in the storage tank to generate a large amount of flammable and explosive gases, so that great potential safety hazards are brought to the storage process of the domestic sewage. Meanwhile, solid matters in the sewage may be adhered to the inner wall of the container during temporary storage, so that a pipeline is blocked, and the sewage is not discharged. Meanwhile, the existing sewage storage tank needs a person to watch on the sewage storage tank on a regular basis, the internal reserves are checked, and the person needs to watch on and operate the sewage storage tank in the sewage discharge process.

Besides the sewage storage facilities on the ship, onshore sewage transfer and collection devices and the like have disadvantages. For example, the collection and transportation of the existing onshore sewage are mainly completed by a dung suction truck which needs to be butted with a sewage storage tank on a ship through a pipeline when in use and then the pipeline is recovered after the completion of sewage discharge and storage. The release and recovery of the existing pipelines are mostly finished by manpower, which is time-consuming, labor-consuming, dirty and smelly, and may cause sewage leakage to pollute a ship body, a water body, a bank or a wharf.

In the ship sewage collecting and transferring process, the automation degree of various related devices is relatively low, manual operation butt joint is needed, and flow statistics, cost settlement and the like are performed manually. These all reduce the efficiency of the sewage collection and transportation work greatly, and the low efficiency is reflected in the high cost of the sewage collection and transportation.

The high cost of sewage recovery, transportation and treatment leads to illegal and untidy behaviors such as disorder discharge and the like in part of shipping enterprises. If the pollutants on the ship are discharged into the water body, serious water body pollution accidents can be caused. Therefore, governments in various parts of China require overall planning and acceleration of the construction of onshore fixed receiving facilities and overwater mobile receiving capacity; a ship pollutant receiving system which takes onshore fixed facility receiving as a main body and takes overwater flow receiving as supplement is gradually formed, the ship pollutant receiving capacity of regions such as port wharfs in the jurisdiction is comprehensively improved, the 'due-taking and complete-receiving' are realized, and the effective connection of the ship pollutant receiving, transferring and disposing links is well made. Although there are huge sewage collection and transportation demand, the operating efficiency, the security etc. of the system and the equipment that current boats and ships sewage were collected and were transported all have obvious not enoughly, and the operation of equipment highly relies on staff simultaneously, and degree of automation is low, and staff's work burden is great, can not satisfy the demand in market.

Disclosure of Invention

In order to overcome the problems in the prior art, the sewage suction device with the integrated driving pipeline folding and unfolding function, which is provided by the invention, has the advantages that the problems of pipeline rolling and direction adjustment in the pipeline folding and unfolding process can be realized through the driving of a single motor, the equipment structure is simple, and the operation is convenient.

A sewage suction device with an integrated driving and retracting pipeline comprises: the self-priming pump comprises a shell, a hose, a winding and unwinding drum, a winding and unwinding pipe driving mechanism, a transmission mechanism and a self-priming pump.

A supporting mechanism is arranged in the shell; the hose is used for connecting a sewage discharge pipeline of a sewage storage device in the ship; the front end of the hose is provided with a quick connector connected with the end part of the sewage discharge pipeline.

The winding and unwinding drum comprises a rotary drum, a left baffle and a right baffle; the rotary drum contains an inner cavity, and one end of the rotary drum is sealed; the left baffle and the right baffle are sleeved on the outer wall of the rotary drum, and the outer part of the rotary drum between the left baffle and the right baffle is a winding area of the hose; the outer wall of the rotary drum is provided with a rotary drum joint, one end of the rotary drum joint is communicated with the inner cavity of the rotary drum, and the other end of the rotary drum joint is communicated with the rear end of the hose.

The pipe receiving and releasing driving mechanism comprises a rotating shaft, a single-rotation reciprocating screw rod, a limiting pulley block and a motor; the rotating shaft is connected with one sealed end of the rotating drum; the direction of the single-rotation reciprocating screw is parallel to the direction of the rotary drum in the winding and unwinding drum, the limiting pulley block is sleeved on the single-rotation reciprocating screw and used for limiting the moving direction of the hose during winding and unwinding; the reciprocating screw rod is used for driving the limiting pulley set to reciprocate along the axial direction of a screw rod in the reciprocating screw rod; the motor is used for driving the reciprocating screw rod and the rotary drum to rotate; the single-rotation reciprocating screw rod comprises a nut and a screw rod, thread grooves in the positive direction and the negative direction are simultaneously arranged on the screw rod, and the end parts of the thread grooves in the two directions are in smooth transition; the inner side of the nut is provided with groove teeth matched with the thread groove.

Drive mechanism includes first sprocket, second sprocket, third sprocket, fourth sprocket, first chain and second chain, and first sprocket and second sprocket are established side by side on the output shaft of motor, and the third sprocket cover is established in the axis of rotation, the fourth sprocket setting is on the screw rod of single-screw reciprocating type lead screw, and first chain is used for connecting first sprocket and fourth sprocket, and the second chain is used for connecting second sprocket and third sprocket. The entry of self priming pump passes through flange joint with the non-sealed one end of rotary drum, and the interface of flange and the tip of rotary drum pass through the rotatable sealing connection of rotary joint, and the export of self priming pump communicates with the equipment of storing sewage or transporting sewage.

Furthermore, the relationship between the wheel diameter and the number of teeth of the chain wheel among the first chain wheel, the second chain wheel, the third chain wheel and the fourth chain wheel is matched with the rotation speed ratio of the screw and the rotary drum; a speed reducer is arranged between the rotating shaft and the rotating drum and used for adjusting the rotating speed of the rotating drum.

The limiting pulley block comprises a base, a first pulley and a second pulley; a nut through hole is formed in the base, the nut is installed at the nut through hole, and the nut is rotatably connected with the base; the first pulley and the second pulley are arranged up and down symmetrically, and are arranged in parallel with the rotary drum and have the same rotation direction; the aperture of the position where the pulley grooves in the first pulley and the second pulley are connected is matched with the pipe diameter of the hose.

Further, the sewage pumping device further comprises a flow meter, wherein the flow meter is installed at the inlet of the self-sucking pump and is used for measuring the flow of the fluid flowing through the self-sucking pump.

Further, sewage suction device still includes the fourth stop valve, the fourth stop valve sets up in the exit of self priming pump for control self priming pump suction sewage process's break-make.

Furthermore, the hose is a hose with a steel wire embedded in the hose; the outer surface of the hose is uniformly distributed with thread-shaped convex lines.

Furthermore, the tube retracting and releasing driving mechanism further comprises at least one smooth slide bar, the slide bar is arranged in parallel with a screw rod in the single-rotation reciprocating screw rod, slide bar through holes are formed in the corresponding positions in the base, and the slide bar is inserted into the slide bar through holes.

Furthermore, the rotary drum and the single-rotation reciprocating screw rod are rotatably supported and connected with a supporting mechanism in the shell, and the screw rods in the rotary drum and the single-rotation reciprocating screw rod are connected with the supporting mechanism through bearings; the motor is fixedly connected with the supporting mechanism.

Further, the sewage suction device also comprises a second control box, and the second control box comprises a second controller, a second switch control module and an indicator light; the switch control module, the indicator light, the motor, the self-priming pump and the fourth stop valve are all electrically connected with the second controller; the second switch control module is used for inputting manual instructions to the second controller; the indicator light is respectively used for indicating the running states of the motor and the self-priming pump in the process of tube absorption and discharge; the second controller is respectively used for controlling the running states of the motor and the self-priming pump, controlling the on-off state of the indicator light and controlling the opening and closing state of the fourth stop valve.

Furthermore, a pipe placing limit controller is also arranged in the sewage suction device, the pipe placing limit controller is electrically connected with the second controller, and the pipe placing limit controller is used for forcibly cutting off the rotation process of the motor when the hose is released to the maximum limit; the tube placing limit controller is a contact type inductive switch, the contact type inductive switch comprises a first contact electrode and a second contact electrode, the first contact electrode is positioned on the surface of the rotary drum, and the second contact electrode is positioned on the surface of the tail end of the hose; the first contact electrode and the second contact electrode are in contact with each other in a state where the hose is stored, and are disconnected after the hose is completely released.

The sewage suction device with the integrated driving and retracting pipeline provided by the invention has the following beneficial effects:

according to the sewage suction device, the motor drives the rotary drum and the screw rod in the single-rotation reciprocating screw rod to rotate, so that the pipeline can be wound on the rotary drum and can also move horizontally, the winding direction of the hose is adjusted, and the hose is wound on the rotary drum more uniformly. Meanwhile, the rotation of the rotary drum and the screw rod is integrally driven by a chain wheel-chain mechanism, the control process is very stable and reliable, manual adjustment is not needed, and the degree of automation is very high.

In addition, in order to solve the problem that the outer diameter of the assembly of the rotary drum and the hose is continuously changed after the hose is wound, a speed reducer is arranged between the rotary drum and the rotating shaft, and the speed reducer can adjust the rotating speed of the rotary drum; so that the rotating speed of the rotary drum can be properly adjusted while the screw rod keeps rotating at a constant speed.

Compared with the existing product, the sewage suction device has better performance, can reduce the workload of operators, is very convenient to operate, and has high usability and reliability.

Drawings

FIG. 1 is a schematic view of the overall structure of the ship sewage storage apparatus in the present example 1 from the right side view;

FIG. 2 is a schematic view of the overall structure of the ship sewage storage apparatus in the present example 1 from the upper left perspective;

FIG. 3 is a schematic structural view of the ship sewage storage apparatus in the present example 1 from a front view;

FIG. 4 is a block diagram showing the connection of the control part of the ship sewage storage apparatus in this embodiment 1;

FIG. 5 is a schematic structural view of the shore-based sewage suction apparatus in the present embodiment 2;

FIG. 6 is a schematic view showing the internal structure of the pumping device for pumping the sewage from the lower bank in the rear view in the embodiment 2;

FIG. 7 is a schematic view showing the internal structure of the suction device for pumping the sewage from the lower bank in the front view in the embodiment 2;

FIG. 8 is a schematic structural diagram of a screw and a slide rod in the single-turn reciprocating screw rod in the embodiment 3;

fig. 9 is a schematic structural diagram of a limiting pulley block in the embodiment 3;

FIG. 10 is a block diagram showing the control part of the shore-based sewage suction apparatus according to the present embodiment 3;

FIG. 11 is a flowchart illustrating the operation of the marine sewage storage apparatus of this embodiment 4;

FIG. 12 is a flow chart of the operation of the shore-based sewage suction apparatus of this embodiment 4;

FIG. 13 is a general layout view of the station-receiving ship sewage collecting and transferring system in the embodiment 5;

labeled as: 1. a mounting frame; 2. a first case; 3. a second case; 4. a water inlet; 5. air holes; 6. a pulverizing circulating pump; 7. a drug injection device; 8. a first internal circulation conduit; 9. a second internal circulation conduit; 10. cutting a sewage pump; 11. A first sewerage pipeline; 12. a first shut-off valve; 13. a second stop valve; 14. a first control box; 15. a first controller; 16. A display module; 17. a first switch control module; 18. an alarm device; 19. a liquid level meter; 20. a first communication module; 21. An access hole; 22. a gas analyzer; 23. a first exhaust pump; 24. a third stop valve; 31. a rotating drum; 32. a left baffle; 33. A right baffle; 34. a drum interface; 35. a rotating shaft; 36. a screw; 37. a slide bar; 38. a motor; 39. a self-priming pump; 40. A fourth stop valve; 41. a first sprocket; 42. a second sprocket; 43. a third sprocket; 44. a fourth sprocket; 45. a first chain; 46. a second chain; 47. a base; 48. a nut through hole; 49. a through hole of the sliding rod; 50. a first pulley; 51. a second pulley; 52. a second controller; 53. a second switch control module; 54. an indicator light; 55. a flow meter; 56. a second communication module; 57. a tube placement limit controller; 58. a nut; 59. a rotating joint; 60. a flange; 61. a housing; 62. a hose; 63. A quick coupling; 100. a ship sewage storage device; 200. a shore-based sewage suction device; 300. a sewage treatment tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The embodiment provides a ship sewage storage device, as shown in fig. 1-3, the sewage storage device comprises an installation frame 1, a first box 2, a second box 3, a liquid level meter 19, a crushing circulating pump 6, an internal circulating pipeline, a cutting sewage pump 10, a sewage pipeline, a first stop valve 12, a second stop valve 13 and a third stop valve 24.

In this example, the top of the first tank 2 is provided with a water inlet 4 and an air hole 5. The water inlet 4 is used for communicating a sewage pipe network on the ship with the inner cavity of the first box body 2. The gas hole 5 is used for balancing the air pressure in the first box body 2 and the second box body 3, when the first box body 2 and the second box body 3 receive sewage, the gas in the inner cavity is discharged along the gas hole 5, when the first box body 2 and the second box body 3 discharge sewage, the external gas enters along the gas hole 5, and the air pressure in the inner cavity of the first box body 2 and the second box body 3 is balanced.

The second box body 3 and the first box body 2 are symmetrically arranged on the mounting frame 1 in parallel, upper through holes and lower through holes are arranged at corresponding positions on the side wall of the first box body 2, which is in contact with the second box body 3, and the lower through holes in the side walls of the first box body 2 and the second box body 3 are respectively positioned at the positions, connected with the bottom surface, in the side walls; the upper through holes and the lower through holes in the first box body 2 and the second box body 3 are communicated with each other. A display portion of the level gauge 19 is provided outside the first tank 2, and a detection portion of the level gauge 19 is provided inside the first tank 2 for measuring the fluid level in a communication chamber formed by the first tank 2 and the second tank 3.

The crushing circulating pump 6 is used for crushing and uniformly mixing the sewage mixture received in the inner cavities of the first box body 2 and the second box body 3; the crushing circulating pump 6 is arranged outside the first box body 2 and the second box body 3; the crushing circulating pump 6 is also connected with a medicine injection device 7, and the medicine injection device 7 is used for injecting medicines for treating sewage into the inner cavities of the first box body 2 and the second box body 3 through the crushing circulating pump 6.

The internal circulation pipes comprise a first internal circulation pipe 8 and a second internal circulation pipe 9; one end of the first internal circulation pipeline 8 is communicated with the inlet of the crushing circulation pump 6; the other end extends to the lower part of the inner cavity of the first box body 2; the portion of the first internal circulation duct 8 located inside the first tank 2 is disposed in the vertical direction with the opening of the end of the first internal circulation duct 8 facing downward. One end of a second internal circulation pipeline 9 is communicated with an outlet of the circulating crushing pump, the other end of the second internal circulation pipeline extends into an inner cavity of the second box body 3, and the part, located in the second box body 3, of the second internal circulation pipeline 9 is horizontally arranged and attached to the inner wall of the bottom of the second box body 3; the flow direction of the fluid at the end of the second internal circulation duct 9 is directed into the first tank 2 along the lower through hole of the second tank 3.

The first tank 2 and the second tank 3 are in communication with each other, and after the pollutants fall into the first tank 2 along the water inlet 4, the solid matters are mainly deposited inside the first tank 2, and the liquid sewage is uniformly distributed between the first tank 2 and the second tank 3. When the whole reserves of sewage mixture rise to a certain height (do not have the last through-hole in first box 2 and the second box 3 in this example), accessible crushing-circulating pump 6 regularly carries out the crushing mixing to the pollutant in first box 2 and the second box 3.

The crushing circulating pump 6 is a circulating pump with a built-in crushing cavity and a crushing cutter, and fluid materials can be sufficiently cut and crushed after passing through the crushing circulating pump 6. A crushing circulating pump 6 and an internal circulating pipeline are arranged; make sewage and solid-state pollutant (like excrement and urine and food waste etc.) in first box 2 and the second box 3 can be followed and smash and mix between two boxes, its circulation crushing process as follows:

when the crushing circulating pump 6 operates, solid matters are sucked from the bottom of the first box body 2 through the first inner circulating pipeline 8, and then are discharged through the second inner circulating pipeline 9 after being crushed by the crushing circulating pump 6. When discharging, the smashed pollutants are washed into the first box body 2 along the lower through hole at the bottom of the second box body 3. During the flushing process, part of the solid matters deposited at the bottom of the second box body 3 are flushed into the first box body 2 and sucked and crushed again. In the process of circularly crushing the solid matters at the lower parts of the first box body 2 and the second box body 3, the liquid matters at the upper parts of the first box body 2 and the second box body 3 circularly flow along the upper through holes. By maintaining such a process for a while, the contaminants in the first casing 2 and the second casing 3 are completely crushed and mixed.

The cutting sewage pump 10 is used for discharging the contained sewage mixture in the first box body 2 and the second box body 3; the cutting sewage pump 10 is positioned outside the first box body 2 and the second box body 3; the cutting dredge pump 10 is a lift pump with a cutting tool for lifting the contaminants in the first tank 2 and the second tank 3 to the level of the deck so as to facilitate discharge of the contaminants.

The sewage discharge pipeline comprises a first sewage discharge pipeline 11 and a second sewage discharge pipeline, one end of the first sewage discharge pipeline 11 is communicated with an inlet of the cutting sewage discharge pump 10, and the other end of the first sewage discharge pipeline extends into the first box body 2; the part of the first sewage draining pipeline in the first box body 2 is close to but not in contact with the inner wall of the bottom of the first box body 2. And a second sewage discharge pipeline is communicated with an outlet of the cutting sewage discharge pump 10, extends to a deck of the ship body, and is connected with a quick connector at the port.

The first stop valve 12 is arranged between the inlet of the cutting sewage pump 10 and a sewage pipeline and is used for controlling the on-off of the sewage discharge process in the sewage storage device; the second stop valve 13 is arranged between the water inlet 4 at the top of the first box body 2 and the sewage pipe network and used for controlling the on-off of the sewage collection process in the sewage storage device. And a third stop valve 24 is arranged between the sewage discharge pipeline and the quick joint, and the third stop valve 24 is used for controlling the on-off of the fluid discharging process at the quick joint.

In this example, the parts that first inner loop 8 and first sewage pipes 11 are located in first box 2 are all vertical downward setting, and its tip and the inside butt joint of first box 2 bottom do not contact, and simultaneously, this position on the first box 2 diapire still is equipped with decurrent depressed part, and the effect of depressed part lies in can making crushing circulating pump 6 and cutting sewage pump 10's suction effect more abundant for first box 2 bottom is thick relatively, the bigger pollutant of density can be taken out completely and is inhaled futilely at this position.

In this example, the first control box 14 includes a first controller 15 and a harmful gas treatment device; the harmful gas treatment device is electrically connected with the first controller 15; the harmful gas treatment device is used for detecting the concentration of various gases in the inner cavity in real time in the whole using process of the sewage storage device, the first controller 15 calculates the comprehensive concentration parameter PPM of the harmful gases according to the concentration of various gases, and when the comprehensive concentration parameter PPM of the harmful gases reaches a danger threshold value, the harmful gas treatment device discharges the harmful gases in the inner cavity out of the first box body 2 and the second box body 3.

In the present embodiment, the harmful gas treatment apparatus includes a gas analyzer 22, an exhaust pipe, and a first exhaust pump 23; the gas analyzer 22 is used for detecting the concentration of four gases, namely oxygen, hydrogen sulfide, carbon monoxide and combustible gas, in the inner cavities of the first box body 2 and the second box body 3; one end of the exhaust pipeline is communicated with the space at the top of the inner cavities of the first box body 2 and the second box body 3, and the other end of the exhaust pipeline extends out of the cabin; the first exhaust pump 23 is positioned at an inlet of the exhaust duct, and is used for exhausting harmful gas in the first tank 2 and the second tank 3; the gas analyzer 22 and the first exhaust pump 23 are both electrically connected to the first controller 15; the first controller 15 is configured to obtain a detection result of the gas analyzer 22, and control an operation state of the first exhaust pump 23 according to the obtained comprehensive concentration parameter of the harmful gas, where a control strategy of the first controller 15 on the operation state of the first exhaust pump 23 is as follows:

(1) when the real-time harmful gas comprehensive concentration parameter PPM in the first box body 2 and the second box body 3 is less than or equal to PPM0, the first exhaust pump 23 does not work;

(2) when the real-time harmful gas comprehensive concentration parameter PPM in the first box body 2 and the second box body 3 is more than PPM0, the first exhaust pump 23 operates for a specified time period T0;

the PPM is a comprehensive parameter obtained by calculation according to the difference value between the real-time concentration of four gases including oxygen, hydrogen sulfide, carbon monoxide and combustible gas and the dangerous concentration threshold value; the parameters consider the influence factors of each gas on the explosion risk of the mixed gas; and the risk threshold ppm0 for this composite parameter is determined empirically by the expert.

In this example, the calculation formula of PPM of the comprehensive concentration parameter of the harmful gas is as follows:

in the above formula, A is the real-time concentration of oxygen, A₀Is a dangerous concentration threshold value of oxygen, and a is an influence factor of the oxygen on the explosion danger of the mixed gas; b is the real-time concentration of hydrogen sulfide, B₀B is a dangerous concentration threshold value of the hydrogen sulfide, and b is an influence factor of the hydrogen sulfide on the explosion danger of the mixed gas; c is the real-time concentration of carbon monoxide, C₀C is the dangerous concentration threshold value of carbon monoxide, and c is the influence factor of carbon monoxide on the explosion danger of the mixed gas; d is the real-time concentration of the combustible gas, D₀The gas-fuel mixture is the lowest concentration of the mixture consisting of combustible gas and air which can explode when meeting a fire source, and d is an influence factor of the combustible gas on the explosion danger of the mixed gas.

In this example, the top of the first box body 2 and the second box body 3 are respectively provided with an access hole 21, the access hole 21 is provided with a top cover which can be opened and closed, the air hole 5 is connected with one end of the guide pipe, and the other end of the guide pipe extends out of the cabin. The access hole 21 is mainly used for overhauling the components in the first box body 2 and the second box body 3; meanwhile, the first box body 2 and the second box body 3 can be flushed through the opening regularly, pollutants adhered to the inner wall are removed, and the upper through hole, the lower through hole, the sewage discharge pipeline and the internal circulation pipeline are kept communicated.

The first stop valve 12, the second stop valve 13 and the third electromagnetic valve are electric stop valves; the liquid level gauge 19 is an electronic liquid level gauge 19. As shown in fig. 4, the control box further includes a display module 16, a first switch controller module 17, and an alarm device 18; the display module 16, the first switch controller module 17 and the alarm module are all electrically connected with the first controller 15; the display module 16 is used for displaying the man-machine interaction content in the operation and control process of the sewage storage device; the switch control is used for the operator to send an operation instruction to the first controller 15; the alarm device 18 comprises a buzzer and a strobe light, and the alarm device 18 is used for sending out early warning alarms to operators in different states of the sewage collection process; the first controller 15 is also electrically connected with a liquid level meter 19, a first stop valve 12, a second stop valve 13, a third electromagnetic valve, a crushing circulating pump 6, a medicine injection device 7 and a cutting sewage pump 10; the liquid level meter 19 is used for detecting the liquid level height of the fluid in the communication cavity of the first box body 2 and the second box body 3; the first controller 15 is respectively used for calculating the storage amount of the sewage mixture in the communicating cavities of the first tank body 2 and the second tank body 3 according to the liquid level height obtained by the liquid level meter 19 and controlling the opening and closing states of the first stop valve 12, the second stop valve 13 and the third stop valve 24; for controlling the operating states and parameters of the pulverizing and pulverizing circulating pump 6 and the cutting circulating pump; for controlling the medicine injection means 7 to periodically inject the sewage treatment medicine into the first tank 2 and the second tank 3.

In this example, the first controller 15 is further connected to a first communication module 20, and the first communication module 20 is used for sending the real-time storage amount of the sewage mixture in the sewage storage device to other equipment or systems and receiving an external sewage discharge operation instruction.

Example 2

The present embodiment provides a shore-based sewage suction apparatus, which, as shown in fig. 5, includes a housing 61, a hose 62, a take-up and pay-off reel, a take-up and pay-off pipe drive mechanism, a self-priming pump 39, a flow meter 55, and a fourth stop valve 40.

A support mechanism is arranged inside the shell 61; the hose 62 is used to connect a sewage drain of a sewage storage device in the ship; the front end of the hose 62 is provided with a quick coupling 63 connected to the end of the sewage pipe.

As shown in fig. 6 and 7, the retractable reel includes a drum 31, a left baffle 32, a right baffle 33, and a connection bearing. The drum 31 has an inner cavity, one end of the drum 31 is sealed; the left baffle 32 and the right baffle 33 are sleeved on the outer wall of the rotary drum 31, and the winding area of the hose 62 is arranged outside the rotary drum 31 between the left baffle 32 and the right baffle 33; the outer wall of the rotary drum 31 is provided with a rotary drum 31 joint, one end of the rotary drum 31 joint is communicated with the inner cavity of the rotary drum 31, and the other end of the rotary drum 31 joint is communicated with the rear end of the hose 62.

The pipe receiving and releasing driving mechanism comprises a rotating shaft 35, a single-rotation reciprocating screw rod, a limiting pulley block, a motor 38 and a transmission mechanism; the rotating shaft 35 is connected with one sealed end of the rotating drum 31; the direction of the single-rotation reciprocating screw is parallel to the direction of the rotary drum 31 in the winding drum, the limiting pulley block is sleeved on the single-rotation reciprocating screw and used for limiting the moving direction of the hose 62 during winding and unwinding; the reciprocating screw rod is used for driving the limiting pulley block to reciprocate along the axial direction of the screw rod 36 in the reciprocating screw rod; the transmission mechanism is used to make the output shaft of the motor 38 simultaneously drive the drum 31 and the screw 36 in the single-rotation reciprocating screw to rotate.

The inlet of the self-priming pump 39 is connected with the non-sealed end of the rotary drum 31 through a flange 60, the interface of the flange 60 is connected with the end part of the rotary drum 31 in a rotatable and sealed mode through a rotary joint 59, and the outlet of the self-priming pump 39 is communicated with equipment for storing sewage or transferring sewage. A flow meter 55, the flow meter 55 being mounted at the inlet of the self-primer pump 39 for measuring the flow of fluid through the self-primer pump 39. The fourth stop valve 40 is arranged at the outlet of the self-priming pump 39, and the fourth stop valve 40 is used for controlling the on-off of the sewage suction process of the self-priming pump 39.

When the sewage suction device works in the example, sewage on a ship sequentially passes through the hose 62 and the rotary drum joint 34 to enter the inner cavity of the rotary drum 31, then enters the self-sucking pump 39 through the rotary flange 60 at the end part of the rotary drum 31, and is discharged to the rear section by the self-sucking pump 39.

In the use process of the shore-based sewage suction device, an operator can release the hose 62 and connect the hose with a sewage discharge pipeline of the ship sewage storage device through the quick connector 63, and sewage on a ship can automatically flow or be pumped to the shore through the self-suction pump 39 and is discharged into the sewage treatment tank after being lifted to a deck. After extraction is completed, the quick connector 63 is disconnected, and the pipe is reeled back onto the drum 31.

During the process of winding and unwinding the hose 62, the motor 38 simultaneously drives the rotary drum 31 and the screw 36 in the single-rotation reciprocating screw to rotate forwards or reversely; so that the hose 62 is loosened or wound from the drum 31 and then passes through the limiting pulley block, an operator only needs to pull the hose 62 without applying pulling force or pushing force to drive the hose 62 to be wound or unwound, and the working strength of the operator is greatly reduced. Wherein the single-rotation reciprocating screw rod can drive the limiting pulley block to reciprocate along the screw rod 36; the hose 62 is then wound uniformly around the drum 31 or unwound from the drum 31; the disadvantage of the hose 62 being wound in a single position is avoided.

In this example, the transmission mechanism is a chain-sprocket mechanism, and includes a first sprocket 41, a second sprocket 42, a third sprocket 43, a fourth sprocket 44, a first chain 45 and a second chain 46, the first sprocket 41 and the second sprocket 42 are sleeved on the output shaft of the motor 38 in parallel, the third sprocket 43 is sleeved on the rotating shaft 35, the fourth sprocket 44 is disposed on the screw 36 of the single-rotation reciprocating screw, the first chain 45 is used for connecting the first sprocket 41 and the fourth sprocket 44, and the second chain 46 is used for connecting the second sprocket 42 and the third sprocket 43. After the transmission mechanism is adopted, the screw rod 36 and the rotary drum 31 are synchronously driven by the same motor 38, so that the equipment structure is simplified, the production cost of the equipment is reduced, and the equipment is more conveniently controlled.

The relationship between the wheel diameter and the number of teeth of the first sprocket 41, the second sprocket 42, the third sprocket 43 and the fourth sprocket 44 in the present embodiment is matched with the rotation speed ratio of the screw 36 and the drum 31; a speed reducer is also arranged between the rotating shaft 35 and the rotary drum 31 and used for adjusting the rotating speed of the rotary drum 31. In the practical application process, the frequency of the screw 36 driving the limit pulley block to reciprocate is constant, but the outer diameter of the combination of the rotary drum 31 and the hose 62 is continuously changed in the pipe releasing and receiving processes of the rotary drum 31, so that the rotating speed of the rotary drum 31 is comprehensively adjusted through the gear ratio of the speed reducer and the sprocket in the embodiment, and the rotating speeds of the rotary drum 31 and the screw 31 can be matched with each other while being driven by the same motor 38.

As shown in FIG. 8, the single-turn reciprocating screw comprises a nut 58 and a screw 36, wherein the screw 36 is provided with thread grooves in the positive direction and the negative direction at the same time, and the ends of the thread grooves in the two directions are in smooth transition. The inner side of the nut 58 is provided with groove teeth matched with the thread groove; when the screw 36 is rotated, the nut 58 is reciprocally and rotationally moved along the axis of the screw 36. The working principle of the single-rotation reciprocating screw rod is as follows: the groove teeth of the nut 58 are clamped in the thread groove on the screw 36; thus, as the screw 36 rotates, the reciprocating nut 58 spins one time and moves axially along the screw 36, transitioning smoothly to a reverse thread groove for reverse spinning and translation as it moves to the end.

As shown in fig. 9, the limiting pulley block comprises a base 47, a first pulley 50 and a second pulley 51; the base 47 is provided with a nut 58 through hole 48, the nut 58 is arranged at the through hole 48 of the nut 58, and the nut 58 is rotatably connected with the base 47. The first pulley 50 and the second pulley 51 are symmetrically arranged up and down, the first pulley 50 and the second pulley 51 are arranged in parallel with the rotary drum 31, and the rotation directions of the first pulley 50 and the second pulley 51 are the same; the aperture of the joint position of the pulley grooves in the first pulley 50 and the second pulley 51 is matched with the pipe diameter of the hose 62.

The base 47 of the limiting pulley block and the reciprocating nut 58 can rotate relatively, and when the limiting pulley block and the reciprocating nut are actually installed, the limiting pulley block and the reciprocating nut can be connected through a bearing or sleeved with each other to enable a certain gap to exist between the limiting pulley block and the reciprocating nut. The set of stop pulleys will thus follow the reciprocating translational movement of the reciprocating nut 58 and the hose 62, after leaving the reel, will be drilled out along the aperture formed by the pulley groove in the first 50 and second 51 pulleys. The limiting pulley set limits the lateral deviation of the hose 62 after being released in the process, so that the hose 62 can be accurately reeled or released at a specified position.

The tube receiving and releasing driving mechanism further comprises a smooth slide rod 37, the slide rod 37 is arranged in parallel with the screw rod 36 in the single-rotation reciprocating screw rod, a slide rod through hole 49 is formed in the base 47 at a corresponding position, and the slide rod 37 is inserted into the slide rod through hole 49. The base 47 is sleeved on the parallel sliding rod 37 and the screw rod 36, so that the base 47 cannot rotate relative to the screw rod 36, and the limit sliding group only keeps the linear reciprocating motion along the axis of the screw rod 36 without deviation. This makes it possible to prevent the thread grooves and the groove teeth, which are screwed into the multifilament bar, from being worn or deformed by positional displacement during movement.

The rotary drum 31 and the single-rotation reciprocating screw rod are rotatably supported and connected with a supporting mechanism in the shell 61, and the rotary drum 31 and the screw rod 36 in the single-rotation reciprocating screw rod are connected with the supporting mechanism through bearings; the motor 38 is fixedly connected with the support mechanism. The use of bearings can make the rotation process of the drum 31 and the screw 36 smoother.

The shore-based sewage suction plant in this example further comprises a second control box comprising a second controller 52, a first switch controller module 17, and an indicator light 54; as shown in fig. 10, the first switch controller module 17, the indicator light 54, the motor 38, the self-primer pump 39, and the fourth stop valve 40 are all electrically connected to the second controller 52. The second switch control module 53 is used for inputting manual instructions to the second controller 52. Indicator lights 54 are used to indicate the operating status of the motor 38 and self-primer pump 39, respectively, during the tube retraction process. The second controller 52 is used for controlling the operation states of the motor 38 and the self-priming pump 39, controlling the on-off state of the indicator light 54, and controlling the open-close state of the fourth cut-off valve 40, respectively.

Wherein, the shore-based sewage suction device is also provided with a pipe discharge limit controller 57, the pipe discharge limit controller 57 is electrically connected with the second controller 52, and the pipe discharge limit controller 57 is used for forcibly cutting off the rotation process of the motor 38 when the hose 62 is released to the maximum limit. The tapping limit controller 57 is a contact-type inductive switch including a first contact electrode on the surface of the drum 31 and a second contact electrode on the surface of the tail end of the hose 62; the first contact electrode and the second contact electrode are in contact with each other in a state where the tube 62 is stored, and are disconnected after the tube 62 is completely released.

When the hose 62 is released to its maximum length, then if the drum 31 continues to rotate, the hose 62 may become reverse-wrapped, which may cause injury to equipment and operators (e.g., tearing the hose 62 or quick connector 63 apart, or pulling the operator into the water, etc.), so the maximum amount of control over the release of the hose must be exercised.

The working principle of the pipe-releasing limit controller 57 in this embodiment is as follows: when the hose 62 is not completely released, the second contact electrode at the tail end of the hose 62 is tightly attached to the first contact electrode on the outer wall of the drum 31, and the contact type inductive switch is in a closed state; the second controller 52 can continue to drive the drum 31 to rotate in this state. When the hose 62 is almost completely released, the first contact electrode and the second contact electrode are separated from contact, the contact-type sensing switch is turned off, and at this time, the second controller 52 immediately sends a command to the motor 38, and the motor 38 stops rotating, so that the drum 31 is prevented from continuously rotating and pulling the hose 62.

In this embodiment, the second controller 52 is also programmed to interlock the operating states of the motor 38 and the self-primer pump 39, keeping at most one of them operational. In the actual operation process, the process of collecting and releasing the hose 62 and the sewage suction process generally cannot be operated simultaneously, which may bring about a safety hazard, and simultaneously may cause the sewage in the hose 62 to leak, causing the pollution of the ship or the dock.

In this example, hose 62 forms for organic polymer material preparation, and its inside sets up the spiral steel wire, and the steel wire has improved hose 62's intensity on the one hand, and on the other hand makes hose 62 surface form screw thread-like burr, and the contact effect of hose 62 between receive and release in-process and spacing assembly pulley can be promoted to the screw thread-like burr, is convenient for carry out receiving and releasing of hose 62.

In this example, the second controller 52 is further connected to a second communication module 56, and the second communication module 56 is used for receiving data of sewage storage amount in the sewage storage device on the ship and receiving control instructions about sewage suction from an external device or system.

The first communication module 20 and the second communication module 56 in this example are mutually butted, so as to be more favorable for obtaining the sewage surplus in each device, and the second controller 52 is convenient for controlling the operation states of the self-priming pump 39 and the fourth stop valve 40 according to the sewage quantity, and meanwhile, the data also serves as a settlement basis for charging sewage treatment cost for the ship discharging sewage by a sewage recovery treatment enterprise.

Example 3

As shown in fig. 11, in this example, there is provided an automatic control method of a ship sewage storage apparatus, which is applied to the ship sewage storage apparatus described in embodiment 1; the automatic control method comprises the following steps:

s1: in an initial state, the first box body 2 and the second box body 3 are in an idle state, the first controller 15 in the control box controls the first stop valve 12 to be in an open state, the second stop valve 13 and the third stop valve 24 to be in a closed state, and the crushing circulating pump 6 and the cutting sewage pump 10 are in a stop state;

s2: the first controller 15 controls the second stop valve 13 to be opened, the sewage storage device starts to collect sewage flowing into a sewage pipe network in the ship, and the gas analyzer 22 monitors the concentration of gas generated by fermentation in the inner cavities of the first box body 2 and the second box body 3 in real time and sends data to the first controller 15; when the gas concentration reaches the alarm value ppm0, the first controller 15 controls the first exhaust pump 23 to open, and harmful gas is exhausted out of the first tank 2 and the second tank 3;

s3: in the using process of the sewage storage device, the electronic liquid level meter 19 monitors the liquid level height h of a sewage mixture in the ship sewage storage device in real time and sends a detection result to the first controller 15, and the first controller 15 calculates the real-time storage volume V of the ship sewage storage device through a volume operation function; the volume operation function V₍h₎The formula of (1) is as follows:

in the above formula, N is the total number of the first casing 2 and the second casing 3, N is 2 for the 1 st second casing 3, N is 3 … … for the 2 nd second casing 3, and N is N +1 for the nth second casing 3; s_n(h) H is the real-time liquid level height of the content in the ship sewage storage device detected by a liquid level meter 19, and is a function of the horizontal sectional area and the height of the (n-1) th second box body 3;

s4: when the real-time reserves V in the first box body 2 and the second box body 3 reach the bottom limit capacity V0, the first controller 15 controls the crushing circulating pump 6 to operate for a period of time t0, a crushing and uniformly mixing process is completed, and the contents in the inner cavity of the ship sewage storage device are crushed and uniformly mixed; when the reserve volume V rises by one volume delta V, completing the process of crushing and mixing for one time;

s5: in a plurality of crushing and mixing processes, the first controller 15 controls the medicine injection device 7 to inject sewage treatment medicines into the first box body 2 and the second box body 3 according to a preset frequency, and the medicines are uniformly distributed in sewage along with the crushing and mixing processes of the contents;

s6: when the real-time reserves in the first box body 2 and the second box body 3 reach the warning capacity v1, the first controller 15 sends an instruction to the second stop valve 13, and meanwhile, the alarm device 18 reminds workers on the ship that the sewage storage device is nearly full and needs to be in time close to the shore for sewage disposal in a ringing and/or stroboscopic mode;

s7: when the real-time storage amount in the first tank 2 and the second tank 3 reaches the upper limit v2 of the capacity, the first controller 15 sends a control instruction to the second stop valve 13, and the second stop valve 13 is closed; waiting for the ship to land for pollution discharge; at the same time, the alarm device 18 is operated to alert the operator that the sewage storage device has failed to continue to receive sewage;

s8: after the ship is in shore, the staff butt joints the quick coupling 63 of the second sewage pipeline end with the quick coupling 63 of the on-shore sewage collecting device, and issues a sewage discharge starting instruction to the first controller 15 through the first switch controller module 17, the ship sewage storage device automatically executes the following processes according to time sequence after receiving the sewage discharge starting instruction:

s81: the first controller 15 controls the crushing and circulating pump 6 to issue a control instruction, and controls the crushing and circulating pump 6 to finish the last crushing and mixing process before the sewage is discharged;

s82: after the crushing and uniformly mixing process is finished, the first controller 15 sends control instructions to the first stop valve 12 and the third stop valve 24 to drive the first stop valve and the third stop valve 24 to be opened;

s83: after the first stop valve 12 and the second stop valve 13 are opened, the first controller 15 sends a control instruction to the cutting sewage pump 10, the cutting sewage pump 10 operates to lift the sewage mixture in the first box body 2 and the second box body 3 to a deck, and the sewage mixture is extracted by a sewage collecting device on the shore;

s84: during the operation of the cutting dredge pump 10, the first controller 15 receives the data measured by the liquid level meter 19 in real time, and judges whether the sewage mixture in the first box body 2 and the second box body 3 is emptied:

(1) when the sewage is not completely discharged, the cutting sewage pump 10 continues to operate;

(2) when the sewage is drained, the first controller 15 sends a control instruction to the cutting sewage pump 10, and the cutting sewage pump 10 stops running; finishing the sewage discharge process;

s9: after the sewage disposal process is finished, the first controller 15 gives an instruction to the alarm device 18, the alarm device 18 works, and an operator is reminded to disconnect the quick connector 63; at the same time, the first controller 15 restores the sewage storage device to the initial state as in S1, and continues to receive the sewage discharged into the ship sewage network.

In the present embodiment, the alarm state in steps S6, S7, S9 is automatically cleared after a duration of time or manually cleared by the first switch controller module 17; the control flow for operation of the alarm device 18 to elimination is as follows:

after the alarm device 18 is operated, the first controller 15 counts the specified alarm duration of the alarm state, and determines whether a manual closing instruction is received, and makes a determination by combining the two:

(1) when the specified alarm time length is not reached and the manual closing instruction is not received, the alarm device 18 continues to work;

(2) when the duration of the alarm state has been reached or a manual shut down command has been received, the first controller 15 issues a command to the alarm device 18 and the alarm device 18 is shut down.

In the present embodiment, the three alarms in steps S6, S7, and S9 differ in the prescribed duration of the alarm state and the combined state of ringing and stroboscopic in the alarm signal.

Example 4

As shown in fig. 12, in the present example, there is provided an operation control method of a shore-based sewage suction apparatus, which is applied to the shore-based sewage suction apparatus as in embodiment 2, the method comprising the steps of:

s1: in the initial state, the hose 62 is in a furled state, the motor 38 is in a shutdown state, and the self-priming pump 39 and the fourth stop valve 40 are in a closed state;

s2: after the ship to be discharged is in shore, the ship and the personnel on shore determine to discharge sewage and butt joint, so that the first controller 15 and the second controllerThe communication module of the controller 52 is butted, and the shore-based sewage suction device obtains the total sewage storage volume V of the ship sewage storage device_{Ship with a detachable hull}；

S3: an operator sends a tube releasing instruction to the second controller 52 through the second switch control module 53, the second controller 52 receives the instruction and then controls the motor 38 to rotate, and when the motor 38 rotates, the screw 36 and the rotary drum 31 are driven to rotate reversely at the same time to release the hose 62; an operator pulls the hose 62 to approach the ship and butt joints the quick connector 63 of the shore-based sewage suction device with the quick connector 63 of the ship sewage storage device;

s4: after the tube placing is finished and the butt joint is finished, the operator turns off the motor 38 through the second switch control module 53; after the motor 38 is turned off, the second controller 52 controls the fourth cut-off valve 40 to be opened;

s5: after the fourth stop valve 40 is opened, the operator can operate the ship according to the horizontal height h of the ship deck_{Ship with a detachable hull}And the horizontal height h of the shore-based sewage suction device_BankDetermining whether the self-priming pump 39 is started to operate, and starting the sewage disposal process;

the decision process for whether the self-priming pump 39 is turned on or not is as follows:

(1) when h is generated_{Ship with a detachable hull}＞h_BankWhen the self-sucking pump 39 is not needed to operate, the operator does not operate the self-sucking pump, and the sewage in the ship sewage storage device automatically flows into the shore-based sewage sucking device;

(2)h_bank≤h_BankWhen the self-priming pump 39 needs to be operated, the operator starts the self-priming pump 39 through the second switch control module 53 to pump the sewage in the ship sewage storage device;

s6: in the sewage flowing process, the flow meter 55 automatically measures the total amount V of the sewage flowing through the outlet of the self-priming pump 39_BankThe second controller 52 is based on V_{Ship with a detachable hull}And V_BankJudging whether the sewage pumping process is finished or not according to the relation, wherein the decision process is as follows:

(1) when V is_{Ship with a detachable hull}-V_BankWhen the pressure is more than or equal to delta V, continuously executing the pollution discharge process;

(2) when V is_{Ship with a detachable hull}-V_BankWhen the pressure is less than delta V, ending the pollution discharge process;

where Δ V is an empirical value considering the tube side of the hose 62 and the loss of the pump body margin, which is determined by experts and ensures that the sewage in the ship sewage storage facility is all pumped and the pumpable portion of the hose 62 is also all pumped to the rear section of the self-priming pump 39;

s7: after the sewage disposal process is finished, the second controller 52 controls the self-priming pump 39 and the fourth stop valve 40 to return to the closed state in sequence;

s8: after the fourth stop valve 40 is closed, the operator on the ship disconnects the quick coupling 63 at the front end of the hose 62, the operator on the shore controls the motor 38 to rotate forward through the second switch control module 53 to execute the hose collecting operation, and after the hose 62 is completely collected, the operator on the shore closes the motor 38 through the second switch control module 53.

In this example, during step S6, when sewage is pumped by gravity, the second controller 52 drives the self-priming pump 39 to operate for a specific period T after the sewage draining process is completed, so that a part of the sewage in the hose 62 is sucked into the rear section of the self-priming pump 39.

Example 5

As shown in fig. 13, the present embodiment provides a station-receiving type ship sewage collecting and transferring system, which includes a ship sewage storage unit 100 located at the bottom of a cabin in a ship, a shore-based sewage suction unit 200 located on a bank or a port, and a sewage treatment tank 300 for performing a harmless treatment on sewage.

The marine wastewater storage system 100 is shown in example 1, and the shore-based wastewater suction system 200 is shown in example 2, in this example, the outlet of the self-priming pump 39 of the shore-based wastewater suction system 200 is connected to the wastewater treatment tank 300 through a pipe, and the hose 62 of the shore-based wastewater suction system 200 is connected to the sewage pipe of the marine wastewater storage system 100 through the quick connector 63. During boats and ships blowdown, whether self priming pump 39 is opened to operating personnel according to the difference in height decision that the boats and ships deck is high in bank base sewage suction device:

(1) when h is generated_{Ship with a detachable hull}＞h_BankWhen the self-sucking pump 39 is not started;

(2)h_bank≤h_BankWhen this occurs, the self-priming pump 39 is turned on.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a sewage suction device of pipeline is receive and release in integration drive which characterized in that, it includes:

a housing, inside which a support mechanism is arranged;

a hose for connecting a sewerage pipeline of a sewage storage device in a ship; the front end of the hose is provided with a quick connector connected with the end part of a sewage discharge pipeline;

the winding and unwinding drum comprises a rotary drum, a left baffle and a right baffle; the rotary drum comprises an inner cavity, and one end of the rotary drum is sealed; the left baffle and the right baffle are sleeved on the outer wall of the rotary drum, and the outer part of the rotary drum between the left baffle and the right baffle is a winding area of the hose; a rotary drum joint is arranged on the outer wall of the rotary drum, one end of the rotary drum joint is communicated with the inner cavity of the rotary drum, and the other end of the rotary drum joint is communicated with the rear end of the hose;

the pipe receiving and releasing driving mechanism comprises a rotating shaft, a single-rotation reciprocating screw rod, a limiting pulley block and a motor; the rotating shaft is connected with one sealed end of the rotating drum; the direction of the single-rotation reciprocating screw is parallel to the direction of the rotary drum in the winding and unwinding drum, the limiting pulley block is sleeved on the single-rotation reciprocating screw and is used for limiting the moving direction of the hose during winding and unwinding; the reciprocating screw rod is used for driving the limiting pulley block to reciprocate along the axial direction of a screw rod in the reciprocating screw rod; the motor is used for driving the reciprocating screw rod and the rotary drum to rotate; the single-rotation reciprocating screw rod comprises a nut and a screw rod, thread grooves in the positive direction and the negative direction are simultaneously arranged on the screw rod, and the end parts of the thread grooves in the two directions are in smooth transition; the inner side of the nut is provided with groove teeth matched with the thread groove;

the transmission mechanism comprises a first chain wheel, a second chain wheel, a third chain wheel, a fourth chain wheel, a first chain and a second chain, the first chain wheel and the second chain wheel are sleeved on an output shaft of the motor in parallel, the third chain wheel is sleeved on the rotating shaft, the fourth chain wheel is arranged on a screw rod of the single-rotation reciprocating screw rod, the first chain is used for connecting the first chain wheel and the fourth chain wheel, and the second chain is used for connecting the second chain wheel and the third chain wheel; and

the self-priming pump, flange joint is passed through with the non-sealed one end of rotary drum to its entry, the interface of flange and the tip of rotary drum pass through the rotatable sealing connection of rotary joint, the export of self-priming pump communicates with the equipment of storing sewage or transporting sewage.

2. The sewage suction device with integrated driving and retracting pipes according to claim 1, characterized in that: the wheel diameter and the sprocket tooth number relationship among the first sprocket, the second sprocket, the third sprocket and the fourth sprocket are matched with the rotation speed ratio of the screw and the rotary drum; and a speed reducer is arranged between the rotating shaft and the rotating drum and used for adjusting the rotating speed of the rotating drum.

3. The sewage suction device with integrated driving and retracting pipes according to claim 1, characterized in that: the limiting pulley block comprises a base, a first pulley and a second pulley; a nut through hole is formed in the base, the nut is installed at the nut through hole, and the nut is rotatably connected with the base; the first pulley and the second pulley are arranged up and down symmetrically, and are arranged in parallel with the rotary drum and have the same rotation direction; the aperture of the position where the pulley grooves in the first pulley and the second pulley are connected is matched with the pipe diameter of the hose.

4. The sewage suction device with integrated driving and retracting pipes according to claim 1, characterized in that: the sewage pumping device further comprises a flow meter, wherein the flow meter is installed at the inlet of the self-priming pump and used for measuring the flow of fluid flowing through the self-priming pump.

5. The sewage suction device with integrated driving and retracting pipes according to claim 1, characterized in that: the sewage suction device further comprises a fourth stop valve, and the fourth stop valve is arranged at the outlet of the self-sucking pump and used for controlling the on-off of the self-sucking pump in the sewage suction process.

6. The sewage suction device with integrated driving and retracting pipes according to claim 1, characterized in that: the hose is a hose with a steel wire embedded in the hose; the outer surface of the hose is uniformly distributed with thread-shaped convex lines.

7. The sewage suction device with integrated driving and retracting pipes according to claim 1, characterized in that: the tube receiving and releasing driving mechanism further comprises at least one smooth slide rod, the slide rod is arranged in parallel with a screw rod in the single-rotation reciprocating screw rod, slide rod through holes are formed in the corresponding positions in the base, and the slide rods are inserted into the slide rod through holes.

8. The sewage suction device with integrated driving and retracting pipes according to claim 1, characterized in that: the rotary drum and the single-rotation reciprocating screw rod are rotatably supported and connected with a supporting mechanism in the shell, and the screw rods in the rotary drum and the single-rotation reciprocating screw rod are connected with the supporting mechanism through bearings; the motor is fixedly connected with the supporting mechanism.

9. The sewage suction device with integrated driving and retracting pipes according to any one of claims 1 to 8, characterized in that: the sewage suction device also comprises a second control box, and the second control box comprises a second controller, a second switch control module and an indicator light; the switch control module, the indicator light, the motor, the self-priming pump and the fourth stop valve are all electrically connected with the second controller; the second switch control module is used for inputting manual instructions to the second controller; the indicating lamps are respectively used for indicating the running states of the motor and the self-priming pump in the process of tube absorption and discharge; the second controller is used for controlling the running state of the motor and the self-priming pump, controlling the on-off state of the indicator light and controlling the on-off state of the fourth stop valve.

10. The sewage suction device with integrated driving and retracting pipes according to claim 9, characterized in that: the sewage suction device is also provided with a pipe placing limit controller, the pipe placing limit controller is electrically connected with the second controller, and the pipe placing limit controller is used for forcibly cutting off the rotation process of the motor when the hose is released to the maximum limit; the tube placing limit controller is a contact type inductive switch, the contact type inductive switch comprises a first contact electrode and a second contact electrode, the first contact electrode is positioned on the surface of the rotary drum, and the second contact electrode is positioned on the surface of the tail end of the hose; the first contact electrode and the second contact electrode are in contact with each other in a state where the hose is stored, and are disconnected after the hose is completely released.