Drainage pump pipeline connecting piece

Abstract

The utility model belongs to the technical field of pipeline connection, and particularly relates to a drain pump pipeline connecting piece which comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are connected through a connecting and fixing structure, and a sealing structure is arranged between the second connecting piece and the first connecting piece. The connecting and fixing structure comprises two limiting lugs fixed to the outer side wall of the first connecting piece, two fixing lugs are symmetrically arranged on the outer side wall of the pipeline connecting piece, screw rods are rotationally arranged on the two fixing lugs, and nuts are rotationally arranged at the ends, away from the fixing lugs, of the two screw rods. The ends, close to the fixing lugs, of the two nuts abut against the sides, away from the fixing lugs, of the two limiting lugs correspondingly. According to the utility model, the first connecting piece and the second connecting piece do not need to be pressed under the assistance of a worker, the use is more convenient, the sealing effect is better, and the air leakage condition is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection, and particularly relates to a pipeline connector for a drainage pump. Background Technique

[0002] When the rainfall is large and the rainwater cannot be drained in time, it will accumulate in the low-lying areas of the city. In order to drain the accumulated rainwater in time, a drainage pump is needed for drainage work. The drainage pump is a kind of pump.

[0003] When the drainage pump is in use, it needs to be connected to a pipeline. Generally, one end of the connector is welded to the outlet of the drainage pump, and the other end is connected to the pipeline. In the prior art, a connection joint is generally used to realize the connection between the drainage pump and the pipeline. A relatively common joint is as Figure 1 shown, including a pump-end connecting pipe 1, a pipeline-end connecting pipe 2, a connecting hoop 3, a sealing ring 4, an ear seat 5, a locking handle 6, and a hook 7. One end of the pump-end connecting pipe 1 is welded to the pump body, and the other end is detachably connected to the pipeline-end connecting pipe 2. The other end of the pipeline-end connecting pipe 2 is connected to the pipeline through a clamp. The ear seats 5 are symmetrically arranged on the outer surface of the connecting hoop 3. The locking handle 6 is connected to the two symmetrically arranged ear seats 5 through a rotating pin. The connecting end of the hook 7 is connected to the locking handle 6 through a connecting pin 8. The connecting pin 8 is an eccentric pin that drives the hook 7 to tighten and loosen. A locking slot 9 is arranged on the outer side of the pipeline-end connecting pipe 2, and the hook end of the hook 7 is buckled in the locking slot 9.

[0004] Since the diameter of the drainage pipeline is generally large, when connecting the pump and the pipeline, two workers are required to cooperate. One person presses the pump-end connecting pipe and the pipeline-end connecting pipe to prevent them from moving, and the other worker rotates the two locking handles to realize the connection between the pump and the pipeline, which is inconvenient to connect. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pipeline connector for a drainage pump to solve the problems raised in the above background technique.

[0006] To achieve the above technical purpose, the technical solution of the utility model is as follows:

[0007] A pipeline connector for a drainage pump includes a first connector and a second connector. One end of the first connector is welded and connected to the drainage pump, and one end of the second connector is connected to the pipeline through a third connector. The characteristic is that the first connector and the second connector are connected through a connection and fixation structure, and a sealing structure is arranged between the second connector and the first connector;

[0008] The connection and fixation structure includes two limiting ears fixed on the outer side wall of the first connecting piece. On the outer side wall of the end of the second connecting piece far from the pipeline, two fixing ears are symmetrically arranged. On each of the two fixing ears, a screw rod is rotatably arranged. The ends of the two screw rods far from the fixing ears respectively penetrate through the two limiting ears. Nuts are rotatably arranged at the ends of the two screw rods far from the fixing ears. The ends of the two nuts close to the fixing ears respectively abut against the sides of the two limiting ears far from the fixing ears.

[0009] As an improvement, the first connecting piece includes a first straight pipe section and an outward expanding section. The outward expanding section is arranged at the end far from the drainage pump. The end of the first straight pipe section far from the drainage pump extends outward to form the end wall of the outward expanding section. The inner diameter of the side wall of the outward expanding section is larger than the inner diameter of the first straight pipe section.

[0010] The second connecting piece includes a second straight pipe section. At the end of the second straight pipe section far from the pipeline, a first protruding part is provided. The inner diameter of the first protruding part is the same as the inner diameter of the second straight pipe section. The outer diameter of the first protruding part is the same as the outer diameter of the outward expanding section. At the end of the first protruding part far from the second straight pipe section, a convex platform structure is provided. The inner diameter of the convex platform structure is the same as the inner diameter of the second straight pipe section. The outer diameter of the convex platform structure is smaller than the outer diameter of the first protruding part.

[0011] The end of the first protruding part far from the second straight pipe section abuts against the end of the outward expanding section far from the first straight pipe section. The convex platform structure is located inside the outward expanding section, and the end wall of the convex platform structure far from the first protruding part abuts against the inner side of the end wall of the outward expanding section.

[0012] As a further improvement, rotating rods are slidably arranged at the ends of the two nuts far from the screw rods. The rotating rods penetrate through the side walls of the nuts.

[0013] As a further improvement, the sealing structure includes a first annular groove opened on the inner side of the end wall of the outward expanding section. A sealing ring is arranged in the first annular groove.

[0014] As a further improvement, a plurality of concave parts are provided on the outer side wall of the second straight pipe section. The plurality of concave parts are evenly distributed. The end of the pipeline is sleeved on the outside of the second straight pipe section.

[0015] As a further improvement, the third connecting piece includes a fixing sleeve sleeved on the outside of the pipeline. At the end of the fixing sleeve close to the second connecting piece, a plurality of elastic parts are provided. The plurality of elastic parts are evenly distributed along the circumference of the fixing sleeve. The plurality of elastic parts are all inclined. The angles between the plurality of elastic parts and the axis of the fixing sleeve are all acute angles. Threads are provided on the outer side walls of the plurality of elastic parts. A rotating sleeve is commonly connected to the outside of the plurality of elastic parts through the threads.

[0016] As a further improvement, second protruding portions adapted to the recessed portions are provided on the inner side walls of the plurality of elastic portions.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0018] For the excrement pump pipeline connector provided by the present utility model, only the boss structure needs to be placed inside the outwardly expanding section, and then the two rotating rods are rotated respectively to realize the connection between the first connector and the second connector. It is not necessary for the staff to assist in holding the first connector and the second connector, which is more convenient to use and has a better sealing effect, and air leakage will not occur.

[0019] The second protruding portions on the inner side walls of the elastic portions cooperate with the recessed portions outside the second straight pipe section to connect and fix the pipeline to the second connector. Moreover, the cooperation between the recessed portions and the second protruding portions can increase the friction between the pipeline and the outer wall of the second straight pipe section, further preventing the pipeline from detaching from the second straight pipe section.

[0020] The arrangement of the rotating rods makes it more convenient to rotate the nuts, and is more conducive to tightening the nuts, without the need to use tightening tools such as wrenches. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of an existing connection joint;

[0022] Figure 2 is a schematic structural diagram of this embodiment;

[0023] Figure 3 is Figure 1 an exploded view of;

[0024] Figure 4 is a cross-sectional view of the first connector in this embodiment;

[0025] Figure 5 is a schematic structural diagram of the second connector in this embodiment;

[0026] Figure 6 is a schematic structural diagram of the third connector in this embodiment;

[0027] Wherein: 1 - pump end connecting pipe, 2 - pipe end connecting pipe, 3 - connecting hoop, 4 - sealing ring, 5 - ear seat, 6 - locking handle, 7 - hook, 8 - connecting pin, 9 - locking groove, 10 - nut, 11 - rotating rod, 12 - second straight pipe section, 13 - first protruding part, 14 - boss structure, 15 - first annular groove, 16 - recessed part, 17 - fixing sleeve, 18 - elastic part, 19 - rotating sleeve, 20 - second protruding part, 21 - first connecting piece, 22 - second connecting piece, 23 - third connecting piece, 24 - pipe, 25 - first straight pipe section, 26 - limiting ear, 27 - outward expanding section, 28 - fixing ear, 29 - screw rod. Detailed implementation manner

[0028] The present utility model will be further described below in conjunction with the detailed implementation manner and the drawings. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present application; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] As Figures 2 - 6 shown, an excretory pump pipe connector includes a first connecting piece 21 and a second connecting piece 22. One end of the first connecting piece 21 is welded to the excretory pump, and one end of the second connecting piece 22 is connected to the pipe 24 through a third connecting piece 23. The first connecting piece 21 and the second connecting piece 22 are connected through a connection fixing structure, and a sealing structure is provided between the second connecting piece 22 and the first connecting piece 21.

[0031] The connecting and fixing structure includes two limiting ears 26 fixed on the outer side wall of the first connecting piece 21. On the outer side wall of the end of the second connecting piece 22 far from the pipeline 24, two fixing ears 28 are symmetrically arranged. On both of the two fixing ears 28, there are screw rods 29. The ends of the two screw rods 29 far from the fixing ears 28 respectively penetrate through the two limiting ears 26. On the ends of the two screw rods 29 far from the fixing ears 28, there are nuts 10 rotatably arranged. The ends of the two nuts 10 close to the fixing ears 28 respectively abut against the sides of the two limiting ears 26 far from the fixing ears 28.

[0032] In this embodiment, on the ends of the two nuts 10 far from the screw rods 29, there is a rotating rod 11 slidably arranged. The rotating rod 11 penetrates through the side wall of the nut 10. Both ends of the rotating rod 11 are located outside the nut 10. On both ends of the rotating rod 11, there are spherical convex blocks, and the convex blocks can prevent the rotating rod 11 from detaching from the nut 10.

[0033] In this embodiment, the first connecting piece 21 includes a first straight pipe section 25 and an outward expanding section 27. The outward expanding section 27 is arranged at the end far from the drainage pump. One end of the first straight pipe section 25 far from the drainage pump extends outward to form the end wall of the outward expanding section 27. The inner diameter of the side wall of the outward expanding section 27 is larger than the inner diameter of the first straight pipe section 25; the second connecting piece 22 includes a second straight pipe section 12. At one end of the second straight pipe section 12 far from the pipeline 24, there is a first protruding part 13. The inner diameter of the first protruding part 13 is the same as the inner diameter of the second straight pipe section 12. The outer diameter of the first protruding part 13 is the same as the outer diameter of the outward expanding section 27. At one end of the first protruding part 13 far from the second straight pipe section 12, there is a boss structure 14. The inner diameter of the boss structure 14 is the same as the inner diameter of the second straight pipe section 12. The outer diameter of the boss structure 14 is smaller than the outer diameter of the first protruding part 13; one end of the first protruding part 13 far from the second straight pipe section 12 abuts against one end of the outward expanding section 27 far from the first straight pipe section 25. The boss structure 14 is located inside the outward expanding section 27, and one end wall of the boss structure 14 far from the first protruding part 13 abuts against the inner side of the end wall of the outward expanding section 27.

[0034] In this embodiment, both of the two fixing ears 28 are fixedly arranged on the outer wall of the first protruding part 13. Both of the two limiting ears 26 are U-shaped, including an open end and a closed end. The closed ends of the two limiting ears 26 are both fixed on the outer side of the end wall of the outward expanding section 27. The open ends of the two limiting ears 26 are both arranged in the direction away from the central axis of the first connecting piece 21.

[0035] In this embodiment, the ends of the two screw rods 29 are respectively rotatably connected with fixing pins. The fixing pins are fixed on the fixing ears 28. The axial direction of the fixing pins is perpendicular to the axial direction of the second straight pipe section 12. The two screw rods 29 respectively rotate around the two fixing pins.

[0036] When the first connecting piece 21 and the second connecting piece 22 need to be fixed, rotate the two screws 29 towards the direction close to the central axis of the second connecting piece 22. The two screws 29 respectively pass through the open ends of the two limiting ears 26. At this time, the ends of the two screws 29 far away from the fixing ear 28 are both located on the side of the two limiting ears 26 close to the drainage pump. Rotate the nut 10 through the rotating rod 11 on the nut 10 until the ends of the two nuts 10 close to the fixing ear 28 respectively abut against the sides of the two limiting ears 26 far away from the fixing ear 28, so as to realize the fixation of the first connecting piece 21 and the second connecting piece 22.

[0037] In this embodiment, the two end parts of the rotating rod 11 are respectively an end part and a second end part. When rotating the rotating rod 11, pull the end part of the rotating rod 11 to make the distance between the end part and the central axis of the nut 10 greater than the distance between the second end part and the central axis of the nut 10. Rotate the end part to drive the nut 10 to rotate and move along the screw 29. When the end part abuts against the outer side wall of the first connecting piece 21, pull the second end part to make the distance between the second end part and the central axis of the nut 10 greater than the distance between the end part and the central axis of the nut 10. Rotate the second end part to drive the nut 10 to rotate and move along the screw 29. Repeat this process in a cycle to tightly abut the nut 10 against the limiting ear 26. It is more convenient to rotate the nut, and it is more conducive to tightening the nut, without the need to use tightening tools such as wrenches.

[0038] In this embodiment, the sealing structure includes a first annular groove 15 opened on the inner side of the end wall of the outer expansion section 27. A sealing ring is arranged in the first annular groove 15. The end of the convex platform structure 14 far away from the second straight pipe section 12 abuts against the inner side of the end wall of the outer expansion section 27, and the abutting position corresponds to the first annular groove 15. The sealing ring is squeezed by the side wall of the convex platform structure 14 in the first annular groove 15, so as to realize the sealed connection between the first connecting piece 21 and the second connecting piece 22 and prevent air leakage when the drainage pump is in use.

[0039] Preferably, the sealing ring adopts a conical sealing ring.

[0040] In this embodiment, a plurality of recessed parts 16 are arranged on the outer side wall of the second straight pipe section 12. The plurality of recessed parts 16 are evenly distributed. The end of the pipeline 24 is sleeved outside the second straight pipe section 12. By arranging the plurality of recessed parts 16, the friction between the pipeline 24 and the second straight pipe section 12 is increased, and the pipeline 24 is prevented from detaching from the second straight pipe section 12.

[0041] In this embodiment, the third connecting member 23 includes a fixing sleeve 17 sleeved outside the pipeline 24. One end of the fixing sleeve 17 close to the second connecting member 22 is provided with a plurality of elastic parts 18. The plurality of elastic parts 18 are evenly distributed along the circumference of the fixing sleeve 17. The plurality of elastic parts 18 are all inclined. The included angles between the plurality of elastic parts 18 and the axis of the fixing sleeve 17 are all acute angles. Threads are provided on the outer side walls of the plurality of elastic parts 18. A rotating sleeve 19 is connected to the outside of the plurality of elastic parts 18 through the threads. Second protruding parts 20 matching the recessed parts 16 are provided on the inner side walls of the plurality of elastic parts 18.

[0042] The second connecting member 22 is connected to the pipeline 24 through the third connecting member 23. Specifically, the pipeline 24 is passed through the middle of the fixing sleeve 17 and the elastic parts 18. Then, the end of the pipeline 24 is sleeved outside the second straight pipe section 12. The elastic parts 18 are placed outside the second straight pipe section 12. The rotating sleeve 19 is rotated to press the plurality of elastic parts 18 against the outer side wall of the pipeline 24. At the same time, the second protruding parts 20 on the inner side walls of the elastic parts 18 cooperate with the recessed parts 16 outside the second straight pipe section 12 to connect and fix the pipeline 24 and the second connecting member 22.

[0043] When this embodiment is in use, first, the end of the first straight pipe section 25 is welded to the drainage pump. Then, the pipeline 24 is connected to the end of the second straight pipe section 12 through the third connecting member 23. The convex structure 14 is placed inside the outward expansion section 27. At this time, the first protruding part 13 abuts against the outward expansion section 27. One end wall of the convex structure 14 away from the first protruding part 13 abuts against the inner side of the end wall of the outward expansion section 27. Then, the two screw rods 29 are rotated. The two screw rods 29 pass through the open ends of the two limiting ears 26. The two nuts 10 are both located on one side of the two limiting ears 26 close to the first straight pipe section 25. Then, by rotating the two rotating rods 11, the two nuts 10 are driven to rotate and move on the two screw rods 29 until one ends of the two nuts 10 close to the screw rods 29 abut against one side of the two limiting ears 26 close to the first straight pipe section 25. The sealing ring is pressed by the convex structure 14 into the first annular groove 15 to realize the fixed connection and sealing of the first connecting member 21 and the second connecting member 22.

[0044] For this utility model, only by placing the convex structure inside the outward expansion section and then rotating the two rotating rods respectively can the connection between the first connecting member and the second connecting member be realized. It is not necessary for the staff to assist in holding the first connecting member and the second connecting member. It is more convenient to use and has a better sealing effect, and there will be no air leakage.

[0045] The above specific implementation manners of the present utility model do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A drainage pump pipeline connector, comprising a first connector and a second connector, wherein one end of the first connector is welded to the drainage pump, and one end of the second connector is connected to the pipeline via a third connector, characterized in that: The first connecting member and the second connecting member are connected via a connecting and fixing structure, and a sealing structure is provided between the second connecting member and the first connecting member; The connecting and fixing structure includes two limiting ears fixed on the outer side wall of the first connecting member, and two fixing ears are symmetrically arranged on the outer side wall of the second connecting member at one end away from the pipe, and screws are rotatably arranged on the two fixing ears, and the ends of the two screws away from the fixing ears respectively penetrate the two limiting ears, and the ends of the two screws away from the fixing ears are rotatably arranged with nuts, and the ends of the two nuts close to the fixing ears respectively abut against the sides of the two limiting ears away from the fixing ears.

2. The drainage pump pipe connector according to claim 1, characterized in that: The first connecting member comprises a first straight pipe section and an outward expansion section, wherein the outward expansion section is arranged at an end away from the drainage pump, the end of the first straight pipe section away from the drainage pump extends outward to form an end wall of the outward expansion section, and the inner diameter of the side wall of the outward expansion section is greater than the inner diameter of the first straight pipe section; The second connecting member comprises a second straight pipe section, an end of the second straight pipe section away from the pipeline is provided with a first protrusion, the inner diameter of the first protrusion is the same as the inner diameter of the second straight pipe section, the outer diameter of the first protrusion is the same as the outer diameter of the outer expansion section, and the end of the first protrusion away from the second straight pipe section is provided with a boss structure, the inner diameter of the boss structure is the same as the inner diameter of the second straight pipe section, and the outer diameter of the boss structure is smaller than the outer diameter of the first protrusion; One end of the first protrusion away from the second straight pipe section abuts against one end of the outward expansion section away from the first straight pipe section, the boss structure is located inside the outward expansion section, and one end wall of the boss structure away from the first protrusion abuts against the inner side of the end wall of the outward expansion section.

3. The drainage pump pipe connector according to claim 1, characterized in that: A rotating rod is slidably provided at one end of the two nuts away from the screw rod, and the rotating rod passes through the side wall of the nut.

4. The drain pump pipe connector according to claim 2, characterized in that: The sealing structure comprises a first annular groove formed on the inner side of the end wall of the expansion section, wherein a sealing ring is arranged in the first annular groove.

5. The drain pump pipe connector according to claim 2, characterized in that: The outer side wall of the second straight pipe section is provided with a plurality of recessed parts, the plurality of recessed parts are evenly distributed, and the end of the pipeline is sleeved on the outside of the second straight pipe section.

6. The drainage pump pipe connector according to claim 5, characterized in that: The third connecting member includes a fixed sleeve sleeved on the outside of the pipe, and a plurality of elastic parts are provided at one end of the fixed sleeve close to the second connecting member. The plurality of elastic parts are evenly distributed along the circumference of the fixed sleeve, and the plurality of elastic parts are all inclined. The angles between the plurality of elastic parts and the axis of the fixed sleeve are all acute angles. The outer side walls of the plurality of elastic parts are provided with threads, and the outsides of the plurality of elastic parts are commonly connected to the rotating sleeve through threads.

7. The drain pump pipe connector according to claim 6, characterized in that: The inner side walls of the plurality of elastic parts are each provided with a second protruding part matched with the recessed part.

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