Sewage lifting device integrally formed with rotational molding coupling water tank

Abstract

The invention relates to the technical field of sewage treatment, in particular to a rotational molding coupling water tank integrally-formed sewage lifting device which comprises a rotational molding water tank, a water level gauge, a water pump, a coupling bent pipe clamping piece, a check valve and a coupling prompt part. A coupling guide rail is arranged in the box shell, a through pipe communicates between the coupling guide rail and a right round opening of the box shell, a set of three bottom foot coupling grooves are formed in the lower side of the interior of the box shell, a water inlet is formed in the left side of the box shell, an access cover plate is installed on the upper side of an access opening of the box shell, and a control box cover is installed at an opening of the access cover plate. Through the arrangement of structures such as the rotational molding water tank, the water pump and the coupling elbow pipe clamping piece, the sewage lifting device can be quickly coupled and spliced with the water pump and the coupling elbow pipe clamping piece through a coupling structure of the rotational molding water tank to form a complete drainage mechanism, and the installation efficiency and the subsequent maintenance efficiency of equipment are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a sewage lifting device integrally formed by rotationally-molded coupling with a water tank. Background Art

[0002] The sewage lifting device is a kind of equipment widely used in drainage systems. It is mainly used to lift sewage from low-lying areas, basements, semi-basements or buildings far away from the municipal sewage network to a higher place or discharge it into the municipal sewage pipe.

[0003] The existing sewage lifting device is usually composed of a roto-molded water tank, a water pump, a water level gauge, a drainage pipe and a valve. Due to the high degree of integration of the sewage lifting device, each device mechanism needs to be installed in the roto-molded water tank, while the existing roto-molded water tanks on the market generally have a simple structure without a coupling design. Therefore, the water pump needs to be fixed and installed through additional fixings. After the installation is completed, it is also necessary to install a drainage pipe connected to the water pump and the water outlet needs to be led out of the roto-molded water tank. The above installation operations all need to be performed in the water tank, which is inconvenient and inconvenient for subsequent inspection and maintenance. Therefore, based on the above problems, a sewage lifting device with a roto-molded coupled water tank as one piece is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a sewage lifting device that is integrally formed by rotationally coupling a water tank, so as to solve the problem that the existing sewage lifting device is inconvenient when installing internal equipment mechanisms and is inconvenient for subsequent inspection and maintenance.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sewage lifting device integrally formed by a rotationally molded coupled water tank comprises a rotationally molded water tank, a water level gauge, a water pump, a coupled elbow fixture, a check valve and a coupling prompt portion, the rotationally molded water tank comprises a tank shell, a coupling guide rail is arranged on the right side of the inspection port of the tank shell, a through pipe is connected between the coupling guide rail and the right circular port of the tank shell, a group of three foot coupling grooves are arranged on the lower side of the interior of the tank shell, a water inlet is provided on the left side of the tank shell, an inspection cover is installed on the upper side of the inspection port of the tank shell, a control box cover is installed at the opening of the inspection cover, a component control box is installed on the lower side of the control box cover, a positioning groove aligned with the water pump is provided on the bottom of the inspection cover, and the tank shell A water level gauge is installed on the upper inner wall, a water pump is installed on the inner side of the box shell, the water pump includes a handle, the lower side of the handle is fixedly connected to a pump body, the lower side of the pump body is fixedly connected to a foot seat that fits with the bottom foot coupling groove, a drainage interface is provided on the right side of the pump body, the upper side of the drainage interface is connected to a coupling elbow clamp, the coupling elbow clamp includes a drainage elbow, the upper right end of the drainage elbow is fixedly connected to a coupling clamp that is slidably connected to a coupling guide rail, an annular groove is opened at the right end face of the coupling clamp, the inner side of the annular groove is fixedly connected to an elastic sealing ring that fits with the inner wall of the coupling guide rail, and a check valve is fixedly connected to the upper side of the right circular opening of the box shell.

[0007] Preferably, the box shell and the inspection cover are detachably connected by bolts, the inspection cover and the control box cover are detachably connected by bolts, the control box cover and the component control box are detachably connected by bolts, and the drainage interface and the drainage elbow are detachably connected by bolts.

[0008] Preferably, a distance is provided between the water level gauge and the lower inner wall of the box shell, the water level gauge and the water pump are electrically connected to the component control box, and the box shell, the coupling guide rail and the through pipe are an integrally formed structure.

[0009] Preferably, the positioning groove consists of a circular groove and a handle groove, the upper end of the pump body is arranged on the inner side of the circular groove of the positioning groove, the handle is arranged on the inner side of the handle groove of the positioning groove, three supporting feet are arranged on the lower side of the foot seat, and the base coupling grooves are all aligned with the supporting feet of the foot seat.

[0010] Preferably, the outer end face of the coupling card fits with the inner wall of the track groove of the coupling guide rail, the drainage elbow is connected to the coupling card, the through pipe is connected to the coupling card, the annular groove is sleeved on the outside of the circular mouth of the coupling card, and the water pump and the coupling elbow card are completely arranged on the lower side of the inspection port of the box shell.

[0011] Preferably, both sides of the left end surface of the coupling guide rail are provided with coupling prompt parts located on the front and rear sides of the drainage elbow, and the coupling prompt part includes a guide sleeve fixedly connected to the left end surface of the coupling guide rail, the outer side of the guide sleeve is slidably connected to a guide frame, the inner side of the guide frame is fixedly connected to a guide rod slidably connected to the guide sleeve, the outer side of the guide rod is provided with a return spring, one end of the guide frame is fixedly connected to a fitting arc piece whose inner curved surface is completely fitted with the outer curved surface of the drainage elbow, the upper end of the fitting arc piece is fixedly connected to a guide strip, the upper side of the guide frame is fixedly connected to a knocking block, and the convex block of the knocking block is fitted with a sound piece fixedly connected to the left end surface of the coupling guide rail.

[0012] Preferably, the return spring is arranged between the guide sleeve and the fitting arc part, the return spring is arranged on the inner side of the guide frame, the guide bar is arranged at an inclined angle, the sounding member is composed of a base frame and a metal sheet in a hole of the base frame, and the metal sheet of the sounding member and the protrusion of the knocking block are arranged to be laterally aligned.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the present invention, by setting the roto-molded water tank, water pump, coupling elbow clamp and other structures, the roto-molded water tank can store and load the water pump and the coupling elbow clamp, and the roto-molded water tank can position the water pump through the coupling groove and the positioning groove of the bottom foot, so that the water pump can be firmly positioned on the inner side of the roto-molded water tank after the installation steps, so as to avoid the water pump from being misplaced during the transportation of the device, and on the other hand, through its coupling structure, that is, the coupling guide rail, the water pump can be lowered along the coupling guide rail through the coupling elbow clamp and closely fit with the through pipe to form a coupling structure, thereby forming a complete drainage channel, so that the sewage lifting device can be quickly coupled and spliced ​​with the water pump and the coupling elbow clamp through the coupling structure of the roto-molded water tank to form a complete drainage mechanism, thereby improving the installation efficiency and subsequent maintenance efficiency of the equipment, and solving the problem that the existing sewage lifting device is inconvenient to install internal equipment and inconvenient to perform subsequent inspection and maintenance;

[0015] 2. In the present invention, by providing the coupling guide rail, coupling elbow clamp and coupling prompt part and other structures, when the coupling elbow clamp moves down along the coupling guide rail to couple with the through pipe, the drainage elbow will squeeze the guide bars of the coupling prompt parts on both sides to both sides, and the displacement of the guide bars will drive the fitting arc parts, guide frames, guide rods and knocking blocks connected thereto to move. When the drainage elbow passes the barrier of the guide bars on both sides downward, the coupling prompt part that loses the squeezing of the drainage elbow will be reset. If the inner curved surface of the fitting arc part can be aligned with the outer curved surface of the drainage elbow after being reset, If they fit completely, the reset knocking block will come into contact with the sounding piece, hitting the metal sheet of the sounding piece, producing a crisp sound when the metal is hit. When the staff hears the sound, it indicates that the coupling elbow clamp and the through pipe are fully coupled and connected, so that when the sewage lifting device is installed and coupled, it can be prompted whether the coupling and splicing are completed, avoiding the problem that the sewage lifting device can only rely on feel and experience to couple and splice during installation, which may result in incomplete coupling, thereby affecting the drainage performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 Schematic diagram of the split structure;

[0018] Figure 3 For the present invention Figure 2 The structural diagram of the rotational molded water tank;

[0019] Figure 4 It is a structural schematic diagram of the box shell of the present invention;

[0020] Figure 5 It is a bottom view structural schematic diagram of the inspection cover plate of the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the water pump and the coupling elbow clamp of the present invention;

[0022] Figure 7 It is a schematic diagram of the split structure of the coupling elbow clamp of the present invention;

[0023] Figure 8 It is a structural schematic diagram of the coupling prompt part of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of the coupling prompt part of the present invention.

[0025] In the figure: 1. Roto-molded water tank; 11. Tank shell; 12. Coupling guide rail; 13. Through pipe; 14. Bottom coupling groove; 15. Water inlet; 16. Inspection cover; 17. Control box cover; 18. Component control box; 19. Positioning groove; 2. Water level gauge; 3. Water pump; 31. Handle; 32. Pump body; 33. Foot seat; 34. Drain interface; 4. Coupling elbow fixture; 41. Drain elbow; 42. Coupling fixture; 43. Ring groove; 44. Elastic sealing ring; 5. Check valve; 6. Coupling prompt part; 61. Guide sleeve; 62. Guide frame; 63. Guide rod; 64. Reset spring; 65. Fitting arc part; 66. Guide strip; 67. Knock block; 68. Sound part. DETAILED DESCRIPTION

[0026] See also Figure 1-9 , the present invention provides a technical solution:

[0027] A sewage lifting device integrally formed by a rotationally molded coupled water tank comprises a rotationally molded water tank 1, a water level gauge 2, a water pump 3, a coupling elbow fixture 4, a check valve 5 and a coupling prompt portion 6. The rotationally molded water tank 1 comprises a tank shell 11. A coupling guide rail 12 is arranged on the right side of the inspection port of the tank shell 11. A through pipe 13 is connected between the coupling guide rail 12 and the right circular port of the tank shell 11. A group of three foot coupling grooves 14 are arranged on the lower side of the inner part of the tank shell 11. A water inlet 15 is provided on the left side of the tank shell 11. An inspection cover plate 16 is installed on the upper side of the inspection port of the tank shell 11. A control box cover 17 is installed at the opening of the inspection cover plate 16. A component control box 18 is installed on the lower side of the control box cover 17. A positioning groove 19 aligned with the water pump 3 is provided at the bottom of the inspection cover plate 16. A water level gauge 2 is installed on the upper inner wall of the box shell 11, and a water pump 3 is installed on the inner side of the box shell 11. The water pump 3 includes a handle 31, and a pump body 32 is fixedly connected to the lower side of the handle 31. A foot seat 33 that fits the bottom foot coupling groove 14 is fixedly connected to the lower side of the pump body 32. A drainage interface 34 is provided on the right side of the pump body 32, and a coupling elbow clamp 4 is connected to the upper side of the drainage interface 34. The coupling elbow clamp 4 includes a drainage elbow 41, and a coupling clamp 42 that is slidably connected to the coupling guide rail 12 is fixedly connected to the upper right end of the drainage elbow 41. An annular groove 43 is provided at the right end surface of the coupling clamp 42, and an elastic sealing ring 44 that fits the inner wall of the coupling guide rail 12 is fixedly connected to the inner side of the annular groove 43. The upper side of the right circular opening of the box shell 11 is fixedly connected to A check valve 5 is connected; the box shell 11 and the inspection cover 16 are detachably connected by bolts, and through this arrangement the inspection cover 16 can be removed from the box shell 11 for subsequent inspection and maintenance; the inspection cover 16 and the control box cover 17 are detachably connected by bolts, and the control box cover 17 and the component control box 18 are detachably connected by bolts, and through this arrangement the component control box 18 can be opened for subsequent maintenance and repair; the drainage interface 34 and the drainage elbow 41 are detachably connected by bolts, and through this arrangement the drainage interface 34 and the drainage elbow 41 can be disassembled for subsequent maintenance and repair; a spacing is set between the water level gauge 2 and the lower inner wall of the box shell 11, and through this arrangement water can enter the lower end of the water level gauge 2 , so that the water level meter 2 can detect the water level, the water level meter 2 and the water pump 3 are electrically connected to the component control box 18, through which the water level meter 2 can control the operation of the water pump 3 through the component control box 18, the box shell 11, the coupling guide rail 12 and the through pipe 13 are an integrated structure; the positioning groove 19 is composed of a circular groove and a handle groove, the upper end of the pump body 32 is arranged on the inner side of the circular groove of the positioning groove 19, and the handle 31 is arranged on the inner side of the handle groove of the positioning groove 19, through which the positioning groove 19 can position the upper end of the water pump 3, and three supporting feet are arranged on the lower side of the foot seat 33, and the foot coupling grooves 14 are aligned with the supporting feet of the foot seat 33 up and down, and through which the position of the foot coupling groove 14 can position the lower end of the water pump 3;The outer end surface of the coupling clamp 42 is fitted with the inner wall of the track groove of the coupling guide rail 12. Through this arrangement, the coupling guide rail 12 can guide and position the coupling clamp 42. The drainage elbow 41 is connected to the coupling clamp 42, and the through pipe 13 is connected to the coupling clamp 42. Through this arrangement, the coupling elbow clamp 4 can be connected to the through pipe 13. The annular groove 43 is sleeved on the outer side of the circular mouth of the coupling clamp 42. Through this arrangement, the elastic sealing ring 44 fixed in the annular groove 43 can seal the coupling connection between the coupling elbow clamp 4 and the through pipe 13. The water pump 3 and the coupling elbow clamp 4 are completely arranged at the lower side of the inspection port of the box shell 11. Through this arrangement, the water pump 3 and the coupling elbow clamp 4 can be installed and removed from the inspection port of the box shell 11. ;

[0028] like Figure 2 , Figure 8 and Fig. 9 As shown, both sides of the left end surface of the coupling guide rail 12 are provided with coupling prompting parts 6 located at the front and rear sides of the drainage elbow 41, and the coupling prompting part 6 includes a guide sleeve 61 fixedly connected to the left end surface of the coupling guide rail 12, a guide frame 62 is slidably connected to the outer side of the guide sleeve 61, a guide rod 63 slidably connected to the guide sleeve 61 is fixedly connected to the inner side of the guide frame 62, and a return spring 64 is sleeved on the outer side of the guide rod 63, and one end of the guide frame 62 is fixedly connected to a fitting arc piece 65 whose inner curved surface is completely fitted with the outer curved surface of the drainage elbow 41, and the fitting arc piece 65 The upper end of the guide bar 66 is fixedly connected, and the upper side of the guide frame 62 is fixedly connected with a knocking block 67. The convex block of the knocking block 67 is fitted with a ringing piece 68 fixedly connected to the left end face of the coupling guide rail 12. Through this arrangement, when the coupling elbow clamp 4 moves down along the coupling guide rail 12 and wants to couple with the through pipe 13, the drainage elbow 41 will squeeze the guide bars 66 of the coupling prompt parts 6 on both sides to both sides. The displacement of the guide bar 66 will drive the fitting arc piece 65, the guide frame 62, the guide rod 63 and the knocking block 67 connected thereto to move. When the drainage elbow 4 When the coupling prompt part 6 loses the squeeze of the drain elbow 41 and passes the obstruction of the guide strips 66 on both sides, it will be reset. If the inner curved surface of the fitting arc part 65 can be completely fitted with the outer curved surface of the drain elbow 41 after reset, the reset knocking block 67 will contact the ringing piece 68 and hit the metal sheet of the ringing piece 68, producing a crisp sound when the metal is hit. When the staff hears the sound, it indicates that the coupling elbow clamp 4 and the through pipe 13 are fully coupled and connected. The reset spring 64 is arranged on the guide sleeve 61 and the outer curved surface of the drain elbow 41. Between the fitting arc pieces 65, the reset spring 64 is arranged on the inner side of the guide frame 62, through which the reset spring 64 can reset the guide frame 62, the fitting arc piece 65 and the knocking block 67, the guide bar 66 is set at an inclined angle, through which the downward-moving drainage elbow 41 can push the guide bar 66 outward, the ringing piece 68 is composed of a base frame and a metal sheet in the base frame hole, the metal sheet of the ringing piece 68 and the protrusion of the knocking block 67 are arranged to be laterally aligned, through which the reset knocking block 67 can hit the metal sheet of the ringing piece 68.

[0029] Workflow: The operations of the sewage lifting device are as follows. Note: The electrical appliance is powered by the outside; the installation and disassembly operation steps are: first install the water level gauge 2 on the inner side of the box shell 11, and then connect the drainage interface 34 of the water pump 3 with the drainage elbow 41 of the coupling elbow clamp 4 with bolts. After the connection is completed, hold the handle 31 of the water pump 3 with one hand, lift the water pump 3 and the coupling elbow clamp 4, and then align the coupling clamp 42 of the coupling elbow clamp 4 with the coupling guide rail 12, and then lower it from the inspection port of the box shell 11, so that the coupling clamp 42 moves along the track groove of the coupling guide rail 12. The coupling fixture 42 moves downward, and the downward movement of the coupling elbow fixture 42 will guide the entire coupling elbow fixture 4 and the water pump 3. After moving downward to the right position, the foot 33 of the water pump 3 is inserted into the foot coupling groove 14. At the same time, the round mouth of the coupling fixture 42 is coupled and aligned with the through pipe 13, so that the coupling elbow fixture 4 is connected to the through pipe 13, so that a complete drainage channel is formed between the coupling elbow fixture 4 and the through pipe 13 and the check valve 5. Finally, after the water pump 3, the water level meter 2 and the component control box 18 are connected, the inspection port of the box shell 11 is sealed with bolts and the inspection cover 16. The above steps are completed. The installation operation is completed, and the same reverse steps can be used for disassembly and maintenance operations, so that the sewage lifting device can be quickly coupled and spliced ​​with the water pump 3 and the coupling elbow clamp 4 through the coupling structure of the rotational molding water tank 1 to form a complete drainage mechanism, thereby improving the installation efficiency and subsequent maintenance efficiency of the equipment; the positioning operation step, during the installation of the inspection cover 16, the handle 31 of the water pump 3 and the upper end of the pump body 32 will be fixed on the inner side of the positioning groove 19, and at the same time, the fixed limit of the foot coupling groove 14 on the foot seat 33 is cooperated, so that the water pump 3 can be installed after the installation step. It is firmly positioned on the inner side of the rotationally molded water tank 1 to prevent the water pump 3 from being misplaced during transportation. The positioning operation of the water pump 3 is completed through the above steps; sewage lifting operation steps, sewage enters the rotationally molded water tank 1 from the water inlet 15, when the water level rises to the set water level, the water level meter 2 will send information to the component control box 18, and the component control box 18 controls the water pump 3 to operate and pump water, and the pumped sewage is discharged from the drainage interface 34, so that the sewage is discharged upward through the coupling elbow clamp 4, the through pipe 13 and the check valve 5, and the sewage lifting operation is completed through the above steps;The coupling alignment prompt operation steps are as follows: during the installation operation, when the coupling elbow fixture 4 moves down along the coupling guide rail 12 and wants to couple and connect with the through pipe 13, the drainage elbow 41 will squeeze the guide bars 66 of the coupling prompt parts 6 on both sides to both sides, and the displacement of the guide bars 66 will drive the connected fitting arc parts 65, guide frame 62, guide rod 63 and knock block 67 to move, wherein the displacement of the guide frame 62 will squeeze the reset spring 64, and when the drainage elbow 41 passes downward over the obstruction of the guide bars 66 on both sides, the coupling prompt part 6 that loses the squeezing of the drainage elbow 41 will reset, and the reset spring 64 will expand and push the guide frame 62, the fitting arc parts 65 and the knock block 67 to reset. After the inner curved surface of the component 65 is reset, it can completely fit with the outer curved surface of the drainage elbow 41, and then the reset knocking block 67 will contact the ringing component 68, hitting the metal sheet of the ringing component 68, producing a crisp sound when the metal is hit. When the staff hears the sound, it indicates that the coupling elbow clamp 4 and the through pipe 13 are fully coupled and connected. The coupling alignment prompt is completed through the above steps, so that when the sewage lifting device is installed and coupled, it can prompt whether the coupling alignment splicing is completed, avoiding the problem that the sewage lifting device can only rely on hand feeling and experience to perform coupling alignment splicing during installation and coupling, which may cause incomplete coupling, thereby affecting the drainage performance of the device. ;

[0030] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A roto-molded coupled water tank integrally formed sewage lifting device, comprising a roto-molded water tank (1), a water level gauge (2), a water pump (3), a coupled elbow clamp (4), a check valve (5) and a coupling prompt part (6), characterized in that: The rotomolded water tank (1) comprises a tank shell (11), a coupling guide rail (12) is arranged on the right side of the inspection opening of the tank shell (11), a through pipe (13) is connected between the coupling guide rail (12) and the right circular opening of the tank shell (11), a group of three foot coupling grooves (14) are arranged on the lower side of the interior of the tank shell (11), a water inlet (15) is provided on the left side of the tank shell (11), an inspection cover plate (16) is installed on the upper side of the inspection opening of the tank shell (11), a control box cover (17) is installed at the opening of the inspection cover plate (16), a component control box (18) is installed on the lower side of the control box cover (17), a positioning groove (19) aligned with the water pump (3) is provided at the bottom of the inspection cover plate (16), a water level gauge (2) is installed on the upper inner wall of the tank shell (11), and a water pump (3) is installed on the inner side of the tank shell (11). ), the water pump (3) comprises a handle (31), the lower side of the handle (31) is fixedly connected to a pump body (32), the lower side of the pump body (32) is fixedly connected to a foot seat (33) that fits with a foot coupling groove (14), a drainage interface (34) is arranged on the right side of the pump body (32), the upper side of the drainage interface (34) is connected to a coupling elbow clamp (4), the coupling elbow clamp (4) comprises a drainage elbow (41), the upper right end of the drainage elbow (41) is fixedly connected to a coupling clamp (42) that is slidably connected to a coupling guide rail (12), a ring groove (43) is provided at the right end surface of the coupling clamp (42), the inner side of the ring groove (43) is fixedly connected to an elastic sealing ring (44) that fits with the inner wall of the coupling guide rail (12), and a check valve (5) is fixedly connected to the upper side of the right circular opening of the box shell (11).

2. The sewage lifting device integrally formed by rotational molding and coupling with a water tank according to claim 1, characterized in that: The box shell (11) and the inspection cover (16) are detachably connected by bolts, the inspection cover (16) and the control box cover (17) are detachably connected by bolts, the control box cover (17) and the component control box (18) are detachably connected by bolts, and the drainage interface (34) and the drainage elbow (41) are detachably connected by bolts.

3. The sewage lifting device integrally formed by rotational molding and coupling with a water tank according to claim 1, characterized in that: A spacing is provided between the water level gauge (2) and the lower inner wall of the casing (11); the water level gauge (2) and the water pump (3) are electrically connected to the component control box (18); and the casing (11), the coupling guide rail (12) and the through pipe (13) are an integrally formed structure.

4. The sewage lifting device integrally formed by rotational molding and coupling with a water tank according to claim 1, characterized in that: The positioning groove (19) is composed of a circular groove and a handle groove. The upper end of the pump body (32) is arranged on the inner side of the circular groove of the positioning groove (19). The handle (31) is arranged on the inner side of the handle groove of the positioning groove (19). Three supporting feet are arranged on the lower side of the foot seat (33). The foot coupling grooves (14) are all arranged to be aligned with the supporting feet of the foot seat (33) in the upper and lower directions.

5. The sewage lifting device integrally formed by rotational molding and coupling with a water tank according to claim 1, characterized in that: The outer end surface of the coupling clamp (42) is in contact with the inner wall of the track groove of the coupling guide rail (12); the drainage elbow (41) is connected to the coupling clamp (42); the through pipe (13) is connected to the coupling clamp (42); the annular groove (43) is sleeved on the outer side of the circular opening of the coupling clamp (42); and the water pump (3) and the coupling elbow clamp (4) are completely arranged on the lower side of the inspection opening of the box shell (11).

6. The sewage lifting device integrally formed by rotational molding and coupling with a water tank according to claim 1, characterized in that: Both sides of the left end surface of the coupling guide rail (12) are provided with coupling prompt parts (6) located at the front and rear sides of the drainage bend pipe (41), and the coupling prompt part (6) includes a guide sleeve (61) fixedly connected to the left end surface of the coupling guide rail (12), the outer side of the guide sleeve (61) is slidably connected to a guide frame (62), the inner side of the guide frame (62) is fixedly connected to a guide rod (63) slidably connected to the guide sleeve (61), the outer side of the guide rod (63) is sleeved with a return spring (64), one end of the guide frame (62) is fixedly connected to a fitting arc piece (65) whose inner curved surface is completely fitted with the outer curved surface of the drainage bend pipe (41), the upper end of the fitting arc piece (65) is fixedly connected to a guide bar (66), the upper side of the guide frame (62) is fixedly connected to a knocking block (67), and the convex block of the knocking block (67) is fitted with a sounding piece (68) fixedly connected to the left end surface of the coupling guide rail (12).

7. The sewage lifting device integrally formed by rotational molding and coupling with a water tank according to claim 6, characterized in that: The return spring (64) is arranged between the guide sleeve (61) and the fitting arc member (65), the return spring (64) is arranged on the inner side of the guide frame (62), the guide bar (66) is arranged at an inclined angle, the ringing member (68) is composed of a base frame and a metal sheet in a hole of the base frame, and the metal sheet of the ringing member (68) and the protrusion of the knocking block (67) are arranged to be laterally aligned.

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