A pipe unblocking device

Abstract

The application discloses a pipeline dredging device, which comprises a hollow rod body, a sliding valve, a cover body assembly and a reset elastic member. The upper end of the rod body is connected with a water inlet of a tap water pipe, and the lower end is a water outlet. The sliding valve is composed of a valve core and a valve movable sleeve sleeved outside the valve core. The upper end of the valve core is communicated with the water outlet. The upper end of the cover body assembly is slidably sleeved with the lower end of the valve core, and the lower end covers a pipeline opening. The reset elastic member is sleeved outside the rod body and abuts against the valve movable sleeve at the lower end. When the cover body assembly presses down the pipeline opening, the reaction force pushes the valve movable sleeve to move upwards to open the valve core, and the reset elastic member is compressed. After the cover body assembly is removed, the reset elastic member is reset to push the valve movable sleeve to move downwards to close the valve core. The device realizes synchronous operation of sealing the pipeline and opening the valve through mechanical linkage, directly utilizes municipal water pressure to flush and dredge, and saves the steps of connecting a gas pump or manually rotating. The reset elastic member automatically closes the valve to avoid waste of water resources and improve the convenience and environmental protection of household pipeline dredging.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline dredging equipment, and in particular relates to a pipeline dredging device. Background Technology

[0002] Current pipe dredging technologies commonly employ methods such as pneumatic dredging (e.g., plungers with air pumps) or mechanical dredging (e.g., spring drain cleaners, rotary drain cleaners). Pneumatic dredging requires additional equipment such as air pumps, is cumbersome to operate, and presents problems with the maintenance and portability of the air pump; while mechanical dredging relies on manual rotation or pushing and pulling operations, which is time-consuming and labor-intensive, and has limited effectiveness for some deep or complex blockages. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] In order to overcome the above shortcomings, the purpose of this utility model is to provide a pipe dredging device to solve the technical problems of existing pipe dredging technology being cumbersome to operate, inefficient and limited in effect due to reliance on additional equipment (such as air pumps, long pipes) or manual operation (such as rotating and pushing tools).

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] A pipe unblocking device includes: a hollow rod with an inlet at its upper end for connecting to an external water pipe and an outlet at its lower end; a sliding valve including a valve core whose upper end is connected to the outlet to connect the inlet to the outside, and a valve sleeve fitted around the valve core and slidingly engaging with the valve core to control the opening and closing of the valve core; a cover assembly whose upper end is slidably fitted around the lower end of the valve core and corresponds to the sliding valve, and whose lower end is used to cover the opening of the pipe to be unblocked; and a reset elastic member fitted on the rod, the lower end of which abuts against the valve sleeve; wherein, when the cover assembly covering the opening is subjected to a reaction force that pushes the valve sleeve upward to a first predetermined position to open the valve core, the reset elastic member is compressed; when the cover assembly leaves the opening, the reset elastic member extends and pushes the valve sleeve downward to a second predetermined position to close the valve core.

[0008] Through integrated linkage design, the downward pressure cover can simultaneously complete the pipe sealing and valve opening, and directly use municipal water pressure for flushing, completely eliminating the need for additional operation steps such as air pump connection and spring tool rotation, greatly reducing the operation intensity; the elastic element automatic reset mechanism ensures that the valve closes in time, avoids water waste, and significantly improves the convenience and environmental friendliness of household pipe cleaning.

[0009] In some embodiments, the valve core has two water guide holes spaced apart vertically on its side, and an internal barrier is provided between the two water guide holes to prevent the two water guide holes from communicating. The valve sleeve has a cylindrical structure with open ends, and its inner wall is provided with a first sealing ring, a second sealing ring and a third sealing ring. The first sealing ring and the second sealing ring are located at the upper and lower opening positions respectively and slide to seal with the outer wall of the valve core. The third sealing ring is located between the first sealing ring and the second sealing ring and slides to seal with the outer wall of the valve core to block the communication between the two water guide holes.

[0010] The design utilizes a three-seal ring layered isolation structure to ensure that the water flow is completely blocked when the valve is closed (the first and second seal rings block the port, and the third seal ring isolates the channel), and the flushing water path is precisely opened when the valve is opened.

[0011] In some embodiments, the valve core is threadedly connected to the outlet of the rod.

[0012] The threaded connection allows for quick assembly and disassembly of the valve core, facilitating the cleaning of impurities inside the valve cavity or the replacement of worn seals, significantly reducing maintenance costs caused by long-term use; at the same time, the standardized interface design supports the universality of accessories, improving product compatibility and service life.

[0013] In some embodiments, the cover assembly includes a cover body and a mounting base connected to and communicating with it; the mounting base is sleeved on the lower end of the valve core and can slide relative to the valve core; it also includes a fourth sealing element that is circumferentially disposed on the inner sidewall of the mounting base and slides to seal against the outer sidewall of the lower end of the valve core.

[0014] The fourth seal forms a dynamic seal on the sliding contact surface, which not only ensures the smooth up-and-down movement of the cover assembly, but also completely prevents high-pressure water from leaking through the valve core gap, thus improving the reliability of the device.

[0015] In some embodiments, the cover body has a bowl-shaped structure.

[0016] The bowl-shaped structure can completely cover all types of pipe openings to be unclogged (including irregularly shaped pipe openings), solving the problem of poor sealing of traditional flat covers; in addition, its curved flow guide design can gather water pressure to form a high-speed vortex, enhancing the suction force on blockages, and is especially suitable for unclogging complex pipe types such as toilet bends.

[0017] In some embodiments, the outer side wall of the rod extends radially outward to form a protrusion, and the upper end of the reset elastic member abuts against the protrusion.

[0018] The protrusion provides a stable fulcrum for the reset elastic element, ensuring that the valve sleeve always moves perpendicularly along the valve core axis, avoiding one-sided wear of the sealing ring caused by misalignment; at the same time, it limits the maximum compression stroke of the elastic element to prevent overload damage and extend the life of the core components.

[0019] In some embodiments, the rod gradually tapers towards the outlet to form a conical structure.

[0020] The conical structure accelerates the water flow through a gradual change in cross-sectional area, converting the kinetic energy of municipal water pressure into a jet with a higher flow velocity, thus enhancing the penetration of stubborn blockages. The tapered design also reduces water turbulence, making the flushing direction more focused and improving the accuracy of unblocking.

[0021] In some embodiments, it further includes: a handle, connected to the rod body, having a water inlet at its end.

[0022] The handle integrates water supply and grip functions, and the extended lever arm significantly reduces the downward force. The end water inlet design keeps the water pipe connection away from the work area, avoiding water pipe tangling during rinsing, enabling one-handed operation, and improving safety and comfort.

[0023] In some embodiments, the device further includes a pressure gauge disposed on the rod near the inlet for real-time monitoring of the inlet water pressure.

[0024] The pressure gauge provides real-time feedback on the inlet water pressure, allowing users to adjust the tap water valve to control the flushing intensity based on the degree of blockage. It also supports recording the threshold pressure required for unblocking, providing operational references for similar blockages and enabling scientific unblocking. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the pipe unblocking device of this utility model;

[0026] Figure 2 This is a cross-sectional view of the pipe unblocking device of this utility model;

[0027] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0028] Figure 4 This is an exploded view of the pipe unblocking device of this utility model;

[0029] Figure 5 This is a schematic diagram of the water flow in the closed state of the sliding valve of the pipe dredging device of this utility model;

[0030] Figure 6 This is a schematic diagram of the water flow in the open state of the sliding valve of the pipe dredging device of this utility model;

[0031] Figure label:

[0032] 1. Rod body; 101. Handle; 1011. Inlet; 1012. Outlet; 102. Protrusion; 2. Reset elastic element; 3. Valve movable sleeve; 301. First sealing ring; 302. Second sealing ring; 303. Third sealing ring; 4. Valve core; 401. Water guide hole; 402. Barrier part; 5. Cover assembly; 501. Mounting base; 502. Cover body; 6. Pressure gauge; 7. Fourth sealing element. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0034] This utility model provides a pipe unblocking device, comprising: a hollow rod body 1, a sliding valve, a cover assembly 5, and a reset elastic element 2. Specifically, the rod body 1 is preferably made of stainless steel pipe, with an inlet 1011 connected to a tap water pipe and a straight outlet 1012 at the lower end; the sliding valve consists of a valve core 4 and a valve movable sleeve 3, wherein the upper end of the valve core 4 is fixed to the outlet 1012 of the rod body 1 by socket welding (an alternative is to use a threaded connection), and the valve movable sleeve 3 is a copper alloy cylinder with a wall thickness of about 2mm sleeved on the outside of the valve core 4, with the two fitting together to achieve sliding; the upper end of the cover assembly 5 is slidably sleeved on the lower end of the valve core 4, and its bottom rubber sealing edge is used to press the pipe opening; the reset elastic element 2 can be a compression spring, a disc spring, or an elastic rubber assembly, preferably a stainless steel compression spring, sleeved on the outside of the rod body 1, with its lower end abutting against the upper edge of the valve movable sleeve 3. When the cover presses against the pipe opening, the reaction force pushes the valve movable sleeve 3 upward to compress the spring, thereby opening the valve core 4 channel; when withdrawing, the spring rebounds and pushes the valve movable sleeve 3 downward to close the valve.

[0035] Furthermore, two water guide holes 401 are opened on the side of the valve core 4, and an isolation part 402 is provided inside between the two water guide holes 401 to prevent the two water guide holes 401 from communicating. A sealing ring is embedded inside the valve movable sleeve 3. The first sealing ring 301 is located on the inner wall of the top end of the cylinder, the second sealing ring 302 is located on the inner wall of the bottom end, and the third sealing ring 303 is centrally located. When the valve movable sleeve 3 is in the closed position, the third sealing ring 303 blocks the communication between the two water guide holes 401, and at the same time, the first and second sealing rings seal both ends of the valve core 4. When the valve movable sleeve 3 moves upward, the third sealing ring 303 disengages from the isolation area, allowing the two holes to communicate and form a flushing water path.

[0036] Furthermore, the working principle of the sliding valve is specifically manifested as follows: the upper and lower water guide holes 401 on the side of the valve core 4 are separated into independent chambers by the internal blocking part 402; the three sealing rings on the inner side of the valve movable sleeve 3 constitute a dynamic sealing system - the first sealing ring 301 closes the top channel of the valve core 4, the second sealing ring 302 blocks the bottom outlet, and the third sealing ring 303 is precisely positioned on the outside of the blocking part 402 between the two water guide holes 401. When the valve sleeve 3 is in the closed position (i.e., the second predetermined position), the third sealing ring 303 presses tightly against the outer wall of the blocking part 402, completely blocking the communication path between the two water guide holes 401. At this time, the first and second sealing rings simultaneously seal both ends of the valve core 4, forming a completely sealed state. When the valve sleeve 3 is moved upward to the open position (the first predetermined position) by external force, the third sealing ring 303 slides upward and disengages from the blocking area, allowing the upper and lower water guide holes 401 to pass through and form a water passage. At this time, tap water flows in through the inlet 1011, passes through the upper water guide hole 401, the valve sleeve 3, and the lower water guide hole 401 in sequence, and finally sprays out from the lower end of the valve core 4 to form a flushing water flow. In this way, the axial displacement of the valve sleeve 3 achieves precise switching between the dual states of sealing and water flow.

[0037] Specifically, the valve core 4 and the outlet 1012 of the rod body 1 are detachably connected: the upper end of the valve core 4 is machined with an M30 external thread, and the outlet 1012 of the rod body 1 has a matching internal thread. This design facilitates disassembly and cleaning of impurities (such as hair and grease) inside the valve core 4, and also allows for replacement of worn sealing rings. An alternative solution is to use quick-connect clamps for fixation.

[0038] Based on this, the cover assembly 5 is manufactured in two parts: the bowl-shaped rubber cover body 502 (leather cup) and the ABS engineering plastic mounting base 501 are connected by fitting; the inner wall of the mounting base 501 is fitted with a fourth sealing element 7 (preferably a polytetrafluoroethylene ring), which slides and seals against the lower outer wall of the valve core 4. This structure ensures both high-pressure water sealing and reduces sliding friction resistance.

[0039] Preferably, the cover body 502 adopts a bowl-shaped structure with its edges designed as curved flanges. This shape can adaptively fit flat or curved pipe openings (such as washbasin overflow outlets and toilet drain outlets).

[0040] It is worth noting that the upper end of the return spring abuts against the integrally formed annular protrusion 102 on the outer side of the rod 1.

[0041] Preferably, the outlet section 1012 of the rod body 1 is machined into a tapered converging structure, with its inlet diameter gradually decreasing from 25mm to 15mm at the outlet, and a taper angle of 15°. This design increases the water flow velocity by approximately 40%, forming a concentrated jet that impacts blockages.

[0042] A straight or L-shaped aluminum alloy handle 101 is further added, with a water channel in the horizontal section connected to the water inlet 1011 of the rod body 1, and a water inlet interface at the end of the vertical section. The handle 101 is preferably 300mm long, which reduces the pressure on the operator by 60% and keeps the water pipe away from the work area to avoid tangling.

[0043] Finally, a mechanical pressure gauge 6 (range 0-1MPa) is installed at the front end of the inlet 1011 of rod 1. Users can adjust the opening of the inlet water valve in real time according to the pressure reading (e.g., 0.3MPa is suitable for soft blockages, and 0.6MPa is suitable for hard blockages) to achieve precise unblocking.

[0044] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A pipe unblocking device, characterized in that, include: A hollow rod (1) has an inlet (1011) at its upper end for connecting to an external water pipe and an outlet (1012) at its lower end; a sliding valve includes a valve core (4) whose upper end is connected to the outlet (1012) to connect the inlet (1011) to the outside, and a valve sleeve (3) that is sleeved on the outside of the valve core (4) and slides to control the opening and closing of the valve core (4); a cover assembly (5) whose upper end is slidably sleeved on the lower end of the valve core (4) and corresponds to the sliding valve, and whose lower end is used to cover the valve core (4). The pipe opening to be cleared is provided; and a reset elastic element (2) is sleeved on the rod (1), the lower end of the reset elastic element (2) abuts against the valve movable sleeve (3); wherein, when the cover assembly (5) covers the pipe opening and is subjected to a reaction force that pushes the valve movable sleeve (3) to move upward to the first predetermined position to open the valve core (4), the reset elastic element (2) is compressed; when the cover assembly (5) leaves the pipe opening, the reset elastic element (2) extends and pushes the valve movable sleeve (3) to move downward to the second predetermined position to close the valve core (4).

2. The pipe dredging device according to claim 1, characterized in that, The valve core (4) has two water guide holes (401) spaced apart vertically on its side. An isolation part (402) is provided inside between the two water guide holes (401) to prevent the two water guide holes (401) from communicating. The valve movable sleeve (3) has a cylindrical structure with open ends. Its inner side wall is provided with a first sealing ring (301), a second sealing ring (302) and a third sealing ring (303). The first sealing ring (301) and the second sealing ring (302) are located at the upper and lower opening positions respectively and slide to seal with the outer side wall of the valve core (4). The third sealing ring (303) is located between the first sealing ring (301) and the second sealing ring (302) and slides to seal with the outer side wall of the valve core (4) to block the communication between the two water guide holes (401).

3. The pipe dredging device according to claim 1, characterized in that, The valve core (4) is threadedly connected to the outlet (1012) of the rod (1).

4. The pipe dredging device according to claim 1, characterized in that, The cover assembly (5) includes a cover body (502) and a mounting base (501) connected to and communicating with it; the mounting base (501) is sleeved on the lower end of the valve core (4) and can slide relative to the valve core (4); it also includes a fourth sealing element (7) which is circumferentially disposed on the inner side wall of the mounting base (501) and slides and seals against the outer side wall of the lower end of the valve core (4).

5. The pipe dredging device according to claim 4, characterized in that, The cover body (502) has a bowl-shaped structure.

6. The pipe dredging device according to claim 1, characterized in that, The outer side wall of the rod (1) extends radially outward to form a protrusion (102), and the upper end of the reset elastic member (2) abuts against the protrusion (102).

7. The pipe dredging device according to claim 1, characterized in that, The rod (1) gradually narrows near the outlet (1012) to form a conical structure.

8. The pipe dredging device according to claim 1, characterized in that, Also includes: The handle (101) is connected to the rod (1), and the end of the handle is provided with the water inlet (1011).

9. The pipe dredging device according to claim 1, characterized in that, Also includes: A pressure gauge (6) for real-time monitoring of the inlet water pressure is installed on the rod (1) near the inlet (1011).

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