Gas back-blowing anti-blocking device for easy-to-crystallize material pipeline
By designing the adjustment and expansion components of the gas backflushing anti-clogging device, the problems of equipment adaptability and stability in the existing technology have been solved, achieving stable expansion and sealing in pipes of different diameters, and improving cleaning efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-20
- Publication Date
- 2026-03-20
AI Technical Summary
In the existing technology, equipment with a fixed outer diameter structure can only adapt to one type of pipe diameter. Multiple specifications need to be prepared on site, and the thread or pin limit is prone to loosening under repeated impact and vibration, resulting in uncontrolled stroke, excessive extension or jamming, damage to the pipe wall and increased disassembly risk.
A gas backflush anti-clogging device was designed. Through the combination of adjustment mechanism, drive component, buffer component and expansion component, the outer diameter can be adjusted and stable expansion is achieved. The linear propulsion of the screw rotation drives the protective sleeve and support component to move synchronously, ensuring that the expansion rod is stably tightened in pipes of different diameters. Combined with the one-way locking function of the inner limit mechanism, it prevents retraction.
It achieves stable expansion and sealing of the device in pipes of different diameters, avoids uncontrolled stroke and jamming, reduces disassembly risks, and improves cleaning efficiency and safety.
Smart Images
Figure CN121696174A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of unclogging technology for pipelines containing easily crystallizing materials, and specifically to a gas backflushing anti-clogging device for pipelines containing easily crystallizing materials. Background Technology
[0002] In the petrochemical, pharmaceutical, and food industries, high-melting-point waxes, phthalic anhydride, glucose, and other easily crystallizing materials often form a dense, hard layer on the inner wall of the pipeline. Existing cleaning technologies generally use scraper rods with fixed outer diameters or rigid tie rods, which are manually pushed forward and then flushed by high-pressure gas. The crystals are broken and peeled off by blades or brushes welded around the rod. At the same time, the scraper stroke is limited by threaded locking, pins, or simple retaining rings to complete the pipeline dredging operation.
[0003] However, the fixed outer diameter structure means that one set of equipment can only correspond to one pipe diameter, and multiple specifications need to be prepared on site, which is time-consuming to replace; the thread or pin limiter is prone to loosening under repeated impact and vibration, causing uncontrolled stroke, excessive extension or even jamming in the pipe, which not only damages the pipe wall but also increases the risk of disassembly, becoming a prominent defect that restricts cleaning efficiency and safety. Summary of the Invention
[0004] The purpose of this invention is to provide a gas backflushing anti-clogging device for pipelines containing easily crystallizing materials, in order to solve the problems in the prior art where the fixed outer diameter structure means that one set of equipment can only correspond to one pipe diameter, multiple specifications need to be prepared on site, and replacement is time-consuming; the threaded or pin limiters are easy to loosen under repeated impacts and vibrations, causing uncontrolled stroke, excessive extension or even jamming in the pipeline, which damages the pipe wall and increases the risk of disassembly.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a gas backflushing anti-clogging device for pipelines of easily crystallizing materials, comprising an adjustment mechanism, including an inner probe rod, a driving assembly disposed on the inner probe rod, a buffer assembly disposed on the driving assembly, and a handheld end disposed on the inner probe rod;
[0006] The transition mechanism includes a pad disposed on the buffer assembly and a support assembly disposed on the pad;
[0007] An expansion mechanism, including an expansion assembly disposed on the inner probe;
[0008] The expansion mechanism can adjust the outer diameter to suit the cleaning needs of pipes of different specifications.
[0009] Furthermore, the driving assembly includes a rotating ring sleeve disposed on the inner probe rod, an internal thread disposed on the inner sidewall of the rotating ring sleeve, and an external thread disposed on the inner probe rod;
[0010] The rotating ring is threadedly connected to the inner probe rod.
[0011] Furthermore, the buffer assembly includes a protective sleeve disposed on the rotating ring sleeve and a buffer spring disposed inside the rotating ring sleeve;
[0012] The buffer spring is sleeved on the outer wall of the inner probe rod, wherein the rotating ring is rotatably connected to the protective sleeve, and the rotating ring can drive the protective sleeve to move on the inner probe rod during rotation.
[0013] Furthermore, the support assembly includes a support boss that is slidably sleeved on the outer wall of the inner probe rod, a connecting rod disposed on the outer wall of the support boss, and a limiting sleeve disposed on the end of the connecting rod away from the support boss.
[0014] The connecting rod is rotatably connected to the supporting boss via a rotating shaft; the limiting sleeve is rotatably connected to the connecting rod; and the supporting boss is fixedly connected to the pad.
[0015] Furthermore, the expansion assembly includes a bearing boss disposed on the outer wall of the inner probe, a plurality of extension plates disposed on the outer wall of the bearing boss, and an expansion member disposed on the extension plates.
[0016] Furthermore, the multiple extension plates are evenly distributed circumferentially along the outer diameter of the bearing boss, and the number of extension plates is the same as that of the connecting rod.
[0017] Furthermore, the expansion member includes a locking block rotatably connected to the extension plate via a rotating shaft, and an expansion rod disposed on the locking block.
[0018] Furthermore, it also includes,
[0019] The inner limiting mechanism includes a mounting groove disposed on the inner side wall of the support boss, a limiting spring disposed on the inner side wall of the mounting groove, a limiting pestle disposed on the limiting spring, and a limiting groove disposed on the outer side wall of the inner probe.
[0020] The limiting pestle is slidably connected to the inner side wall of the mounting groove, and the maximum outer diameter of the limiting pestle is perfectly matched with the limiting groove.
[0021] Furthermore, the limiting pestle is also provided with an anti-slip opening so that the limiting pestle can achieve a one-way limiting effect.
[0022] Furthermore, the end of the expansion rod away from the bearing boss can be fitted with an absorbent pad and a cleaning pad to adapt to different usage scenarios, and the limiting sleeve is adapted to the expansion rod.
[0023] Compared with the prior art, the present invention provides a gas backflushing anti-clogging device for pipelines of easily crystallizing materials. By adjusting the expansion rod at the expansion mechanism through the drive component, the maximum outer diameter can be adjusted to adapt to pipelines of different specifications for cleaning. At the same time, the inner limit mechanism at the support boss restricts the movement trajectory of the limit sleeve to prevent it from exceeding its stroke and falling off. An anti-slip port is provided at the limit pestle for one-way limit, so as to achieve the effect that the expansion rod can be retracted and cannot continue to expand outward. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0025] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention;
[0026] Figure 2 This is a schematic cross-sectional view of the overall structure provided in an embodiment of the present invention;
[0027] Figure 3 This is a partial structural explosion and half-section schematic diagram provided in an embodiment of the present invention;
[0028] Figure 4 This is a schematic diagram of a portion of the structure at the support boss provided in an embodiment of the present invention.
[0029] Explanation of reference numerals in the attached figures:
[0030] 100. Adjustment mechanism; 101. Inner probe rod; 102. Drive assembly; 102a. Rotating ring sleeve; 103. Buffer assembly; 103a. Protective sleeve; 103b. Buffer spring; 104. Handheld end; 200. Transition mechanism; 201. Pad plate; 202. Support assembly; 202a. Support boss; 202b. Connecting rod; 202c. Limiting slide sleeve; 300. Expansion mechanism; 301. Expansion assembly; 301a. Bearing boss; 301b. Extension plate; 301c. Expansion piece; 301c-1. Locking block; 301c-2. Expansion rod; 400. Inner limiting mechanism; 401. Limiting spring; 402. Limiting pestle; 403. Limiting groove. Detailed Implementation
[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0032] As attached Figure 1 To be continued Figure 4 As shown:
[0033] Example 1:
[0034] The present invention provides a gas backflush anti-clogging device for pipelines of easily crystallizing materials, comprising an adjustment mechanism 100, including an inner probe 101, a drive assembly 102 disposed on the inner probe 101, a buffer assembly 103 disposed on the drive assembly 102, and a handheld end 104 disposed on the inner probe 101.
[0035] The transition mechanism 200 includes a pad 201 disposed on the buffer assembly 103 and a support assembly 202 disposed on the pad 201;
[0036] The expansion mechanism 300 includes an expansion component 301 disposed on the inner probe 101;
[0037] The expansion mechanism 300 can adjust its outer diameter through the adjustment mechanism 100 to adapt to the cleaning needs of pipes of different specifications.
[0038] The drive assembly 102 includes a rotating ring 102a disposed on the inner probe rod 101, an internal thread disposed on the inner side wall of the rotating ring 102a, and an external thread disposed on the inner probe rod 101; the rotating ring 102a is threadedly connected to the inner probe rod 101.
[0039] The buffer assembly 103 includes a protective sleeve 103a disposed on the rotating ring sleeve 102a and a buffer spring 103b disposed inside the rotating ring sleeve 102a;
[0040] A buffer spring 103b is sleeved on the outer wall of the inner probe rod 101. The rotating ring 102a is rotatably connected to the protective sleeve 103a. The rotating ring 102a can drive the protective sleeve 103a to move on the inner probe rod 101 during rotation.
[0041] With the adjustment mechanism 100 as the core, the operator can insert the inner probe 101 into the easily crystallizing pipe to be cleaned by holding the handheld end 104. By rotating the rotating ring 102a, the ring 102a moves smoothly in the axial direction by utilizing the meshing of the internal and external threads. At the same time, it drives the protective sleeve 103a connected to it to advance synchronously. The buffer spring 103b is always sleeved on the outer wall of the inner probe 101 throughout the process, which absorbs the axial impact and maintains the uniform thrust, thereby realizing the pre-adjustment of the outer diameter of the subsequent expansion parts and ensuring that the device can be inserted into the depth of pipes of different diameters in one go.
[0042] When the protective sleeve 103a moves forward, the pad 201 fixed to its front end pushes the support boss 202a in the support assembly 202 to slide along the inner probe rod 101. The connecting rod 202b and the limiting sliding sleeve 202c open accordingly, forming a stable triangular support. At this time, the bearing boss 301a of the expansion mechanism 300 is pushed synchronously, and multiple extension plates 301b unfold outward. The locking block 301c-1 and the expansion rod 301c-2 flip outward under the action of the rotating shaft. The overall outer diameter increases rapidly and sticks to the pipe wall, completing the flexible conversion from "contraction" to "expansion", providing a uniform annular channel for subsequent gas backflushing.
[0043] Working principle: Utilizing the mechanical transmission of linear propulsion via a screw rotation, manual power or motor torque is converted into axial movement of the rotating ring 102a on the inner probe rod 101. This drives the protective sleeve 103a and the pad 201 to move forward synchronously, causing the connecting rod 202b of the support assembly 202 and the limiting sleeve 202c to open outward. This, in turn, pushes the extension plate 301b and the expansion rod 301c-2 of the expansion mechanism 300 to rotate around the axis, increasing the overall outer diameter and pressing it tightly against the pipe wall. At the same time, the buffer spring 103b absorbs the propulsion impact, and the limiting pestle 402, under the action of the limiting spring 401, engages with the limiting groove 403 to form a one-way lock, ensuring that the expanded state will not retract during backflushing, adsorption, or scraping. Thus, it completes the tightening, sealing, and multi-functional cleaning of pipes of different diameters in one go.
[0044] Example 2:
[0045] This embodiment is basically the same as the previous embodiment, except that a gas backflush anti-blocking device for pipelines of easily crystallizing materials includes a support assembly 202, which includes a support boss 202a slidably sleeved on the outer wall of the inner probe rod 101, a connecting rod 202b disposed on the outer wall of the support boss 202a, and a limiting sleeve 202c disposed on the end of the connecting rod 202b away from the support boss 202a.
[0046] The connecting rod 202b is rotatably connected to the supporting boss 202a via a rotating shaft; the limiting sleeve 202c is rotatably connected to the connecting rod 202b; and the supporting boss 202a is fixedly connected to the pad 201.
[0047] Furthermore, the expansion assembly 301 includes a bearing boss 301a disposed on the outer side wall of the inner probe 101, a plurality of extension plates 301b disposed on the outer side wall of the bearing boss 301a, and an expansion member 301c disposed on the extension plate 301b.
[0048] Furthermore, multiple extension plates 301b are evenly distributed circumferentially along the outer diameter of the bearing boss 301a, and the number of extension plates 301b is the same as that of the connecting rod 202b.
[0049] It should be noted that the expansion member 301c includes a locking block 301c-1 rotatably connected to the extension plate 301b via a rotating shaft, and an expansion rod 301c-2 disposed on the locking block 301c-1.
[0050] The original matching method between the expansion rod 301c-2 and the limiting sleeve 202c is limited, namely the sliding guiding function of the limiting sleeve 202c, so that the middle part of the rod body of the expansion rod 301c-2 is directly pivotally connected to the limiting sleeve 202c through the pivot, forming an integrated pivot structure of "rod and sleeve", while the inner end of the rod body is still hinged to the locking block 301c-1.
[0051] During operation, when the support boss 202a moves forward and pushes the connecting rod 202b to open, the limiting sleeve 202c slides along the axis of the inner probe rod 101 while rotating around its own hinge point, driving the expansion rod 301c-2 to flip outward with the limiting sleeve 202c as the fulcrum, thus completing the outer diameter expansion. Since the pivot is located in the middle section of the rod, the expansion lever arm is shortened and the torque is increased. Under the same thrust, the rod end tension is significantly improved, and the opening angle of each rod is more consistent, avoiding the shaking and angle deviation caused by the early simple sliding, making the annular wall-adhering effect more uniform.
[0052] Working principle: Rotating the rotating ring 102a causes it to move axially on the thread of the inner probe 101, which drives the protective sleeve 103a and the pad 201 to move forward synchronously, pushing the support boss 202a to slide and causing the connecting rod 202b to open. The limiting sleeve 202c, as the middle section hinge fulcrum, drives the expansion rod 301c-2 to flip outward. The buffer spring 103b absorbs the impact, and the limiting pestle 402 is locked into the limiting groove 403 to form a one-way lock, thereby converting the rotation input into a synchronous outward expansion clamping force, providing a uniform wall-adhering annular channel for subsequent gas backflushing.
[0053] Example 3:
[0054] This embodiment is basically the same as the previous embodiment, except that a gas backflush anti-clogging device for pipelines containing easily crystallizing materials also includes,
[0055] The inner limiting mechanism 400 includes a mounting groove disposed on the inner side wall of the support boss 202a, a limiting spring 401 disposed on the inner side wall of the mounting groove, a limiting pestle 402 disposed on the limiting spring 401, and a limiting groove 403 disposed on the outer side wall of the inner probe rod 101.
[0056] The limiting pestle 402 is slidably connected to the inner side wall of the mounting groove, and the maximum outer diameter of the limiting pestle 402 is perfectly matched with the limiting groove 403.
[0057] The limiting pestle 402 is also provided with an anti-slip opening so that the limiting pestle 402 can achieve the effect of unidirectional limiting.
[0058] Furthermore, the end of the expansion rod 301c-2 away from the bearing boss 301a can be fitted with an absorbent pad and a cleaning pad to adapt to different usage scenarios, and the limiting sleeve 202c is compatible with the expansion rod 301c-2.
[0059] The expansion rod 301c-2 has a one-way locking function when it is in the open state. In the mounting groove pre-set on the inner side wall of the support boss 202a, the limiting spring 401 pushes the limiting pestle 402 radially out, so that the anti-slip port at its end immediately engages with the corresponding limiting groove 403, forming a one-way mechanical lock. This prevents the expansion rod 301c-2 from accidentally retracting when there is high air pressure backflush or violent suction, and ensures that the annular wall-attached channel always maintains its maximum outer diameter.
[0060] During operation, the rotating ring 102a still drives the protective sleeve 103a forward through the threaded pair, pushing the support component 202 to open and causing the expansion mechanism 300 to flip outward. However, the timing of the ejection of the limiting pestle 402 coincides precisely with the end point of the expansion, so that the operator can stop the rotation at the moment of feeling the "click" locking without the need for additional locking action. At the same time, the anti-slip design ensures that the limiting pestle 402 can only be inserted in the direction of the inward probe 101, and the self-locking is tighter when subjected to reverse force, which significantly improves the reliability of the device under vibration conditions.
[0061] The limiting grooves 403 are evenly distributed along the rod body and can be matched with any expansion size, maintaining universality for different pipe diameters. The outer end of the expansion rod 301c-2 can be fitted with a water-absorbing pad / cleaning pad. If hard crystals need to be removed from the inner wall of the pipe, abrasive material or a scraper can also be fitted to the outermost end of the expansion rod 301c-2 as needed. After locking, there is no risk of the rod body rotating and loosening, extending service life and reducing maintenance frequency. After expansion to the correct position, the limiting pestle 402 of the inner limiting mechanism 400 pops out under the action of the limiting spring 401 and locks into the corresponding limiting groove 403, forming a one-way anti-slip lock to prevent the expansion rod 301c-2 from retracting during operation. At this time, the water-absorbing pad or cleaning pad can be quickly installed at the end of the expansion rod 301c-2. The device can then perform back-blowing, adsorption or scraping actions while maintaining a tight state, realizing a one-time insertion, multi-functional anti-clogging operation for easily crystallizing material pipelines.
[0062] Working principle: Rotating the rotating ring 102a causes it to move axially on the thread of the inner probe 101, driving the protective sleeve 103a and the pad 201 to move forward synchronously, pushing the support boss 202a to slide and causing the connecting rod 202b to open. The limiting sleeve 202c slides outward synchronously and acts as a fulcrum to make the expansion rod 301c-2 turn outward and stick tightly to the pipe wall. When the expansion end point is reached, the limiting spring 401 pops out the limiting pestle 402 and locks it into the limiting groove 403 to form a one-way lock. The buffer spring 103b absorbs the impact, thus converting the rotation input into an integrated action of supporting and locking.
[0063] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A gas backflushing anti-clogging device for pipelines containing easily crystallizing materials, characterized in that, include, The adjustment mechanism (100) includes an inner probe rod (101), a drive assembly (102) disposed on the inner probe rod (101), a buffer assembly (103) disposed on the drive assembly (102), and a handheld end (104) disposed on the inner probe rod (101). The transition mechanism (200) includes a pad (201) disposed on the buffer assembly (103) and a support assembly (202) disposed on the pad (201). The expansion mechanism (300) includes an expansion component (301) disposed on the inner probe (101). The expansion mechanism (300) can adjust its outer diameter through the adjustment mechanism (100) to adapt to the cleaning needs of pipes of different specifications.
2. The gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 1, characterized in that, The drive assembly (102) includes a rotating ring (102a) disposed on the inner probe (101), an internal thread disposed on the inner sidewall of the rotating ring (102a), and an external thread disposed on the inner probe (101). The rotating ring (102a) is threadedly connected to the inner probe (101).
3. A gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 2, characterized in that, The buffer assembly (103) includes a protective sleeve (103a) disposed on the rotating ring (102a) and a buffer spring (103b) disposed inside the rotating ring (102a). The buffer spring (103b) is sleeved on the outer wall of the inner probe rod (101). The rotating ring sleeve (102a) is rotatably connected to the protective sleeve (103a). The rotating ring sleeve (102a) can drive the protective sleeve (103a) to move on the inner probe rod (101) during rotation.
4. A gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 3, characterized in that, The support assembly (202) includes a support boss (202a) slidably sleeved on the outer wall of the inner probe (101), a connecting rod (202b) disposed on the outer wall of the support boss (202a), and a limiting sleeve (202c) disposed on the end of the connecting rod (202b) away from the support boss (202a). The connecting rod (202b) is rotatably connected to the support boss (202a) via a rotating shaft; the limiting sleeve (202c) is rotatably connected to the connecting rod (202b); and the support boss (202a) is fixedly connected to the pad (201).
5. A gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 4, characterized in that, The expansion assembly (301) includes a bearing boss (301a) disposed on the outer wall of the inner probe (101), a plurality of extension plates (301b) disposed on the outer wall of the bearing boss (301a), and an expansion member (301c) disposed on the extension plate (301b).
6. A gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 5, characterized in that, The multiple extension plates (301b) are evenly distributed circumferentially along the outer diameter of the bearing boss (301a), and the number of extension plates (301b) is the same as that of the connecting rod (202b).
7. A gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 5 or 6, characterized in that, The expansion member (301c) includes a locking block (301c-1) rotatably connected to the extension plate (301b) via a rotating shaft, and an expansion rod (301c-2) disposed on the locking block (301c-1).
8. A gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 7, characterized in that, It also includes, The inner limiting mechanism (400) includes a mounting groove disposed on the inner sidewall of the support boss (202a), a limiting spring (401) disposed on the inner sidewall of the mounting groove, a limiting pestle (402) disposed on the limiting spring (401), and a limiting groove (403) disposed on the outer sidewall of the inner probe (101). The limiting pestle (402) is slidably connected to the inner side wall of the mounting groove, and the maximum outer diameter of the limiting pestle (402) is exactly matched with the limiting groove (403).
9. A gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 8, characterized in that, The limiting pestle (402) is also provided with an anti-slip opening so that the limiting pestle (402) can achieve the effect of unidirectional limiting.
10. A gas backflush anti-clogging device for pipelines containing easily crystallizing materials according to claim 7, characterized in that, The end of the expansion rod (301c-2) away from the bearing boss (301a) can be fitted with an absorbent pad and a cleaning pad to adapt to different usage scenarios. The limiting sleeve (202c) is adapted to the expansion rod (301c-2).