Drainage pipeline cleaning dredger

Abstract

The utility model relates to the field of pipeline cleaning and dredging, in particular to a drainage pipeline cleaning and dredging device which comprises a body, and one end of the body is bent downwards and connected with a plug. A piston assembly is movably arranged in an inner cavity of the main body, the piston assembly can reciprocate in the side wall direction of the main body, and the piston assembly and the side wall of the main body are arranged in a sealed mode; the side, deviating from the plug, of the piston assembly is connected with one end of a pull rod, an end cover is arranged at the other end of the body, a retaining hole is formed in the center of the end cover, and the other end of the pull rod penetrates through the retaining hole, extends to the outer side of the body and is connected with a push-pull handle. A second vent hole is formed in the end cover; an operator holds the push-and-pull handle to repeatedly push and pull the push-and-pull handle to drive the piston assembly to reciprocate in the main body, so that drawing negative pressure and forward pushing positive pressure are alternately formed on the two sides of the piston assembly to act in a blocked pipeline, and therefore blockages in the pipeline are cleaned and dredged, and the whole structure is simple, light, portable and convenient to use. An operator can operate and use the device without professional dredging skills.

Description

Technical Field

[0001] This utility model relates to the field of pipe cleaning and dredging, and in particular to a drainage pipe cleaning and dredging device. Background Technology

[0002] There are many methods and equipment widely used for unclogging drainage pipes. Because drainage pipes vary in diameter and material, and their structures are complex and varied, especially with the continuous addition of multiple U-bends and bends, blockages are easily caused. Furthermore, the different formation times and substances of the blockages make effective pipe unclogging even more difficult.

[0003] Common drain cleaning tools consist of a flexible, continuously extendable spring shaft. Through rotation and axial pushing, it gradually enters the pipe to reach the blockage, and the unblocking operation is completed by a drain cleaning tool attached to the front end of the spring shaft. Because drain cleaning usually requires a certain level of professional skill and experience, it presents a certain level of difficulty. To address this issue, this new invention specifically develops a simple and efficient household drain cleaning tool. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a simple and efficient drain cleaning and unclogging tool. By having the operator repeatedly push and pull the handle, the piston assembly is driven to reciprocate within the main body. This causes the piston assembly to alternately generate negative pressure for pulling and positive pressure for pushing forward, thereby producing a negative pressure suction force for pulling backward and a positive pressure impact force for pushing forward. These forces act on the blocked pipe, thus clearing and unclogging the blockage. The overall structure is simple, lightweight, and portable, and can be used by operators without professional unclogging skills.

[0005] To achieve the above objectives, this utility model is implemented according to the following technical solution:

[0006] This utility model provides a drain pipe cleaning and unclogging device, including a main body, which is tubular, with one end bent downward and connected to a plug; a piston assembly is movably disposed inside the main body, the piston assembly can reciprocate along the side wall of the main body and is sealed to the side wall of the main body; the piston assembly is connected to one end of a pull rod on the side opposite to the plug, and an end cap is provided at the other end of the main body, with a retaining hole in the center of the end cap, and the other end of the pull rod extends through the retaining hole to the outside of the main body and is connected to a push-pull handle; the end cap is provided with a second vent hole to ensure that the air required for piston movement can smoothly enter or exit the main body.

[0007] In the above technical solution, the plug has a channel extending through the main body, and a socket is opened at the end of the plug that is biased towards the main body. The inner diameter of the socket matches the outer diameter of the corresponding end of the main body. The socket is connected to the channel, and a stop step is formed between the socket and the channel at a certain depth.

[0008] In the above technical solution, the end of the blockage furthest from the main body is configured as a planar blockage opening, a bowl-shaped blockage opening, or a conical blockage opening, depending on the type of blockage opening.

[0009] In the above technical solution, the piston assembly includes two sets of one-way pistons that are back-to-back and connected. A first vent hole is opened on the periphery of the one-way piston. A baffle is provided between the two sets of one-way pistons. Annular sealing grooves are opened on both sides of the baffle, which are biased toward the edges of the two sets of one-way pistons. A sealing ring is placed in the annular sealing groove.

[0010] In the above technical solution, the bending angle of the curved portion of the main body is 45°.

[0011] The above technical solution also includes a pressing handle. A pressing handle that can move along the main body is provided on the straight pipe section of the main body. The pressing handle is fixed to the main body by adjusting bolts.

[0012] In the above technical solution, the gripping direction of the pressing handle forms an 80° angle with the straight tube axis of the main body.

[0013] The above technical solution also includes a shock-absorbing spring, and the shock-absorbing spring is sleeved on the outer part of the pull rod located on the main body.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] The pipe opening is sealed tightly to prevent airflow and water leakage or overflow during dredging operations. By pulling back and pushing forward the handle, the piston assembly reciprocates within the main body. Due to the seal between the piston assembly and the side wall of the main body, a large negative pressure suction force is generated at the front end of the piston assembly inside the pipe when pulled back, fully sucking in water and blockages from the drain pipe. Pushing forward generates a large forward impact force, pushing water and blockages into the drain pipe. The reciprocating motion of the piston assembly creates a sufficiently large negative pressure suction force and forward impact force on the pipe being dredged, sucking and loosening the blockages within the pipe, causing them to move within the pipe and completing the dredging process. This utility model has a simple overall structure, is lightweight and portable, and can be operated by users without professional dredging skills. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the drainage pipe cleaning and unblocking device according to an embodiment of the present utility model;

[0018] Figure 2 This is a perspective view of the internal structure of the drainage pipe cleaning and unblocking device of this utility model.

[0019] Figure 3 This is a schematic diagram of the piston assembly.

[0020] Figure 4 This is a schematic diagram of the connection structure between the piston assembly and the tie rod;

[0021] Figure 5 A perspective diagram illustrating how a push-pull handle drives the piston.

[0022] Figure 6 A perspective diagram illustrating how a push-pull handle moves a piston.

[0023] Figure 7 A schematic diagram showing the angle formed between the pressing handle and the main body;

[0024] Figure 8 A schematic diagram illustrating the operation of applying vertical downward pressure to the seal;

[0025] Figure 9 This is a schematic diagram of the sealing structure;

[0026] Figure 10 Schematic diagrams of different sealing structures.

[0027] Reference numerals: 1. Main body; 2. Press-down handle; 3. Adjusting bolt; 4. Piston assembly; 4-1. First vent; 4-2. Baffle; 4-3. Annular sealing groove; 4-4. Sealing ring; 5. Nut; 6. Pull rod; 7. End cap; 8. Retaining hole; 9. Second vent; 10. Push-pull handle; 11. Screw; 12. Shock-absorbing spring; 13. Seal; 13-1. Flat sealing port; 13-2. Bowl-shaped sealing port; 13-3. Conical sealing port; 14. Channel; 15. Socket; 16. Stop step. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0029] like Figures 1-10 As shown in the figure, this utility model embodiment proposes a drainage pipe cleaning and unclogging device, including a main body 1. The main body 1 is a cylindrical tube formed in one piece using engineering plastic tubing. The front end of the main body 1 is bent downward and connected to a plug 13. A piston assembly 4 is movably disposed inside the inner cavity of the main body 1. The piston assembly 4 can reciprocate along the side wall of the main body 1 and is sealed to the side wall of the main body 1. The piston assembly 4 is connected to the front end of a pull rod 6 on the side away from the plug 13. The piston assembly 4 is fastened to the front end of the pull rod 6 with a nut 5. An end cap 7 is fixed to the rear end of the main body 1 with a screw 11. A retaining hole 8 is provided in the center of the end cap 7. The rear end of the pull rod 6 extends through the retaining hole 8 to the outside of the main body 1 and is connected to a push-pull handle 10. The end cap 7 is provided with a second vent hole 9 to ensure that the air required for piston movement can smoothly enter or exit the main body 1.

[0030] The seal 13 is pressed tightly against the pipe opening to prevent airflow and water leakage or overflow during the dredging operation. By pulling back and pushing forward the push handle 10, the piston assembly 4 is driven to reciprocate within the main body 1. Due to the seal between the piston assembly 4 and the side wall of the main body 1, a large negative pressure suction force is generated at the front end of the piston assembly 4 in the pipe when pulled back, which fully sucks in the water and blockage in the drainage pipe. When pushed forward, a large forward thrust force is generated, which pushes the water and blockage in the main body into the drainage pipe. The reciprocating motion of the piston assembly generates a sufficiently large negative pressure suction force and forward thrust force on the pipe being dredged, which sucks and pushes the blockage in the pipe to loosen it, causing the blockage to move in the pipe and completing the pipe dredging.

[0031] The pull rod 6 passes through the retaining hole 8 in the center of the end cap 7. With the retaining hole 8 as support, when the piston assembly 4 reciprocates in the main body 1, it ensures that the piston assembly 4 always runs smoothly along the straight pipe section of the main body 1, thereby ensuring good sealing between the piston assembly 4 and the side wall of the main body 1 during the reciprocating motion.

[0032] It should be noted that the one-piece molded main body 1 has good sealing performance, which can effectively guarantee the impact pressure generated by the reciprocating piston movement and ensure a sufficiently large suction negative pressure or forward thrust. The main body 1 can also be a plug-in assembly in which an elbow is directly inserted into the front end of a straight pipe.

[0033] This utility model has a simple overall structure, is lightweight and portable, and can be operated and used by operators without professional dredging skills.

[0034] like Figure 1 , Figure 2 , Figure 9 As shown, the plug 13 is made of a material with a certain hardness and elasticity, such as rubber. The plug 13 has a channel 14 extending through it along the extension direction of the main body 1. A socket 15 is opened at one end of the plug 13 that is biased towards the main body 1. The inner diameter of the socket 15 matches the outer diameter of the corresponding end of the main body 1. The socket 15 is connected to the channel 14. A stop step 16 is formed between the socket 15 and the channel 14 at a certain depth. During the unblocking operation, a suitable plug 13 is selected according to the different drain pipe openings of kitchen and bathroom fixtures. The front end of the bend is directly inserted into the socket 15. The plug 13 is pressed down to cover the drain pipe opening, preventing airflow and water from overflowing. The stop step 16 restricts the forward movement of the main body 1 pipe when the plug 13 is pressed down. The airflow and water flow of the piston assembly 4 reciprocating through the channel 14 only form suction and impact on the blockage in the pipe.

[0035] like Figure 10 As shown, the end of the plug 13 furthest from the main body 1 is configured as a planar plug 13-1, a bowl-shaped plug 13-2, or a conical plug 13-3, depending on the type of plug, to adapt to different kitchen and bathroom facilities and drainage pipe openings. Specifically, the planar plug 13-1 has a bevel that gradually thins from the inside out, making it suitable for relatively flat drainage pipe openings with slightly smaller diameters. When the plug 13 is tightened, the gradually thinning bevel tightly seals the pipe opening under downward pressure. The bowl-shaped plug 13-2 has a bevel that gradually thins from the inside out, and at the junction of the bowl-shaped plug 13-2 and the socket 15, the diameter is significantly reduced. Small tubular shapes are suitable for complex environments with slightly larger pipe diameters, relatively narrow operating spaces, and difficult operations. The joint between the bowl-shaped sealing port 13-2 and the socket 15 can be adjusted at any angle, making it suitable for operation in narrow and complex environments. The bowl-shaped sealing port 13-2 is inverted and placed over the drain pipe opening, where it is tightly pressed and sealed under downward pressure. The conical sealing port 13-3 has a long cone at the front end of the sealing port, which is suitable for drain openings of different shapes and diameters, such as toilet seats. The cone at the front end of the conical sealing port 13-3 is directly inserted into the drain pipe opening of the toilet seat. During the insertion process, the cone gradually fits tightly with the shape of the pipe opening, and the pipe opening is tightly pressed and sealed under downward pressure.

[0036] like Figures 1-6As shown, the piston assembly 4 includes two sets of one-way pistons that are back-to-back and connected. A first vent hole 4-1 is provided on the periphery of the one-way piston. A baffle 4-2 is provided between the two sets of one-way pistons. Annular sealing grooves 4-3 are provided on both sides of the baffle 4-2, offset from the edges of the two sets of one-way pistons. A sealing ring 4-4 ​​is placed in the annular sealing groove 4-3. When the piston is pulled backward, the airflow at the rear end pushes the sealing ring 4-4 ​​installed in the annular sealing groove 4-3 outward through the first vent hole 4-1. The baffle 4-2 restricts the displacement of the sealing ring 4-4, causing the sealing ring 4-4 ​​to tightly adhere to the smooth inner wall of the main body 1 to form a seal. During the backward movement of the piston, a negative pressure is formed at the front end of the piston, which fully draws in water and blockages from the drainage pipe. As the piston moves forward, the airflow at the front end pushes the sealing ring 4-4, installed in the annular sealing groove 4-3, outward through the first vent 4-1, forming a seal by tightly adhering to the smooth inner wall of the main body 1. The forward thrust of the piston generates a significant water flow impact force, pushing the water and blockages inside the main body 1 into the drain pipe. Repeatedly pulling the piston back and pushing it forward creates a reciprocating motion of the piston assembly 4 within the main body 1. The suction loosens the blockages in the drain pipe, while the forward thrust generates a significant water flow impact force. This effectively ensures a negative pressure environment created by the piston's reciprocating motion, generating a sufficiently large suction and forward thrust force to move the blockages within the pipe, thus clearing the blockage.

[0037] like Figure 1 , Figure 2 , Figure 8 As shown, the bending angle of the curved portion of the main body 1 is 45°. A downward pressure handle 2 that can move along the main body 1 is provided on the straight section of the main body 1. The downward pressure handle 2 is fixed to the main body 1 by adjusting bolts 3. According to ergonomic requirements, the downward pressure handle 2 can be fixed at any position along the straight section of the main body 1. The operator holds the downward pressure handle 2 in one hand with the grip position adjusted, and holds the push-pull handle 10 with the other hand, pulling back and pushing forward to make the piston move back and forth. The downward pressure handle 2 in the grip position adjusted The push-pull handle 10 forms the optimal position for the operator to press down on the plug 13 and pull back on the piston. The movable pressing handle 2 is fixed with the adjusting bolt 3 to accommodate operators with different swing arm widths. The main straight pipe section presses down on the plug 13 at a 45° angle. When the operator holds the pressing handle 2 to press the plug and clear the blockage, a vertical downward thrust is formed between the pressing handle 2 and the pipe opening plug, which makes the plug 13 seal the pipe opening more tightly. The vertical downward pressure on the plug makes the sealing effect of the plug on the pipe opening better.

[0038] like Figure 7As shown, the connection between the pressing handle 2 and the main body 1 is perpendicular to the axis of the straight pipe section of the main body 1. The gripping direction of the pressing handle 2 forms an 80° angle with the straight pipe axis of the main body 1. During the unblocking operation, the pressing handle 2 is gripped and pressure is applied downward to tighten the blockage 13, making the grip more comfortable and the pressing easier. The gripping part of the handle has an equidistant grid design, and its mechanical properties and gripping feel are more in line with ergonomic requirements.

[0039] A shock-absorbing spring 12 is fitted on the outer part of the pull rod 6 located on the main body 1 to reduce the impact of the piston on the end cover 7 when the push-pull handle 10 is pulled back and pushed forward.

[0040] This utility model discloses a drainage pipe cleaning and unblocking device. During the cleaning and unblocking operation, a suitable plug 13 is selected according to the different plug openings, and the front end of the main body 1 bend is directly inserted into the socket 15; for example... Figure 8 As shown, first adjust the gripping position of the downward pressing handle 2 according to the width of the swing arm, and fix it to the main body 1 by adjusting the bolt 3; the main body straight pipe section presses down the sealing plug 13 at a 45° angle, pressing the sealing plug 13 tightly to the pipe opening, and holding the downward pressing handle 2 to press the sealing plug, forming a downward thrust between the downward pressing handle 2 and the sealing plug, so that the sealing plug 13 can seal the pipe opening more tightly, and the downward pressure on the sealing plug makes the sealing effect of the sealing plug on the pipe opening better; by pulling back and pushing forward the push-pull handle 10, the piston assembly 4 is driven to reciprocate within the main body 1. When the piston is pulled back, the airflow at the rear end pushes the sealing ring 4-4 ​​installed in the annular sealing groove 4-3 to expand outward through the first vent 4-1. The baffle 4-2 restricts the displacement of the sealing ring 4-4, so that the sealing ring 4-4 ​​fits tightly against the smooth inner wall of the main body 1 to form a seal; during the process of pulling the piston back and moving it backward, a negative pressure is formed at the front end of the piston, which fully sucks in the water and blockage in the drainage pipe. As the piston moves forward, the airflow at the front end pushes the sealing ring 4-4, installed in the annular sealing groove 4-3, outward through the first vent 4-1, forming a seal by tightly adhering to the smooth inner wall of the main body 1. The forward thrust of the piston generates a significant water flow impact force, pushing the water and blockages inside the main body 1 into the drain pipe. Repeatedly pulling the piston back and pushing it forward creates a reciprocating motion of the piston assembly 4 within the main body 1. The suction loosens the blockages in the drain pipe, while the forward thrust generates a significant water flow impact force. This effectively ensures a negative pressure environment created by the piston's reciprocating motion, generating a sufficiently large suction and forward thrust force to move the blockages within the pipe, thus clearing the blockage.

[0041] In addition to the connection relationships between the components listed above and the connection methods between other components, this utility model can be further extended based on the conceptual guidance of this utility model and the prior art.

[0042] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A drain pipe cleaning and unclogging device, characterized in that, The system includes a main body (1), which is tubular. One end of the main body (1) is bent downward and connected to a plug (13). A piston assembly (4) is movably disposed inside the cavity of the main body (1). The piston assembly (4) can reciprocate along the side wall of the main body (1) and is sealed to the side wall of the main body (1). The piston assembly (4) is connected to one end of a pull rod (6) on the side away from the plug (13). An end cap (7) is provided at the other end of the main body (1). A retaining hole (8) is provided in the center of the end cap (7). The other end of the pull rod (6) extends through the retaining hole (8) to the outside of the main body (1) and is connected to a push-pull handle (10). A second vent hole (9) is provided on the end cap (7) to ensure that the air required for piston movement can smoothly enter or exit the main body (1).

2. The drain pipe cleaning and unclogging device according to claim 1, characterized in that, The plug (13) has a channel (14) extending through it along the extension direction of the main body (1). The plug (13) has a socket (15) at one end biased towards the main body (1). The inner diameter of the socket (15) matches the outer diameter of the corresponding end of the main body (1). The socket (15) is connected to the channel (14). The socket (15) forms a stop step (16) between itself and the channel (14) at a certain depth.

3. A drain line cleaning and unclogging device as defined in claim 2 wherein, The end of the plug (13) away from the main body (1) is configured as a planar plug (13-1), a bowl-shaped plug (13-2), or a conical plug (13-3) depending on the plug opening.

4. A drain pipe cleaning and unclogging device according to claim 1, characterized in that, The piston assembly (4) includes two sets of one-way pistons that are back-to-back and connected. A first vent hole (4-1) is provided on the periphery of the one-way piston. A baffle (4-2) is provided between the two sets of one-way pistons. An annular sealing groove (4-3) is provided on both sides of the baffle (4-2) that are biased toward the edges of the two sets of one-way pistons. A sealing ring (4-4) is placed in the annular sealing groove (4-3).

5. A drain pipe cleaning and unclogging device according to claim 1, characterized in that, The bending angle of the curved portion of the main body (1) is 45°.

6. A drain line cleaning and unclogging device as defined in claim 1 wherein, It also includes a pressing handle (2), and a pressing handle (2) that can move along the body (1) is provided on the straight pipe section of the main body (1). The pressing handle (2) is fixed to the main body (1) by adjusting bolts (3).

7. A drain line cleaning and unclogging device as defined in claim 6 wherein, The gripping direction of the pressing handle (2) forms an 80° angle with the straight tube axis of the main body (1).

8. A drain line cleaning and unclogging device as defined in claim 1 wherein, It also includes a shock-absorbing spring (12), and the pull rod (6) is fitted with a shock-absorbing spring (12) on the outer part of the main body (1).

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