A device for clearing a polyester kettle discharge pipe
By combining a hydraulically driven crushing cone structure with a high-temperature resistant endoscope, the problem of blockage in the outlet pipe of the polyester reactor was solved, achieving efficient, safe, and economical automated dredging and meeting the high requirements of industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JINGGONG SCI & TECH
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-28
AI Technical Summary
Existing pipeline dredging technologies suffer from low efficiency, poor safety, high cost, and insufficient applicability at the outlet of polyester reactors, failing to meet the high requirements of continuous industrial production.
The material crushing cone structure driven by a hydraulic actuator, combined with real-time monitoring and visualization by a high-temperature resistant endoscope, enables accurate identification and automatic unblocking of blockage locations. The threaded connection design allows for quick replacement of vulnerable parts, and the double-layer packing seal prevents material jamming and leakage. The hollow push rod protects the endoscope signal line, reducing maintenance complexity and cost.
It significantly improves production efficiency and safety, avoids scratches on the inner wall of the pipe, reduces maintenance costs and operating requirements, and realizes an automated and efficient dredging process.
Smart Images
Figure CN224558726U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline dredging equipment technology, and in particular to a device for dredging pipelines at the outlet of polyester reactors. Background Technology
[0002] During polyester production, the material at the outlet of the polyester reactor often solidifies due to temperature changes, leading to blockages in the outlet pipe and preventing smooth material discharge. This problem severely impacts production continuity and efficiency. Traditional solutions rely primarily on manual unblocking; however, manual unblocking has several drawbacks. Firstly, manual operation is inefficient, taking a long time from discovering the blockage to completing the unblocking, causing production delays. Secondly, manual unblocking requires workers to be in close proximity to potentially hazardous production environments, compromising safety. Furthermore, manual mechanical unblocking is labor-intensive, and improper force during operation can scratch the pipe's inner wall, damaging the pipeline and making it unsuitable for the high demands of continuous industrial production.
[0003] Currently, there are several types of pipe cleaning devices. Mechanical cleaning devices break or hook out blockages through manual physical contact. This method is direct and effective, suitable for clearing hard blockages such as branches and plastics in household, hotel, and municipal pipes. However, in the scenario of clearing pipes at the outlet of polyester reactors, its reliance on manual operation is incompatible with the automation requirements of continuous industrial production, and there is a risk of scratching the inner wall of the pipe. High-pressure water jet cleaning uses a high-pressure water flow of 10-200MPa to flush away blockages. It is environmentally friendly and non-damaging, suitable for soft blockages such as oil stains and tree roots. However, this method requires professional operation, has high requirements for the working environment, and has high equipment and maintenance costs. In the specific environment of polyester production, it may be difficult to function stably due to the complexity of the working conditions, and the high cost also increases the burden of industrial production. Chemical cleaning agents use strong corrosive agents such as sodium hydroxide and sulfuric acid or biological enzymes / microbial preparations to decompose organic matter. They are convenient to use and suitable for household pipes. However, strong corrosive agents pose safety hazards, potentially corroding pipelines and affecting their lifespan. Biological agents, on the other hand, are slow-acting and cannot promptly resolve blockages in the polyester reactor outlet pipeline, failing to meet the time-sensitive requirements of industrial production. Pneumatic unclogging devices utilize the instantaneous release of compressed air to generate shock waves for pipeline unclogging, offering speed and residue-free operation, suitable for simple blockages. However, improper pressure control during use can damage pipelines and valves, and the polyester reactor outlet pipeline demands extremely high equipment stability and safety, limiting its application due to this potential risk. Vacuum suction technology uses vacuum pumps to extract accumulated debris from pipelines, efficiently cleaning sludge and wastewater, suitable for multi-pipeline operations. However, it requires large equipment, resulting in high operating costs, and for unclogging a single polyester reactor outlet pipeline, it represents a waste of equipment resources and is uneconomical. Intelligent pipeline robots, equipped with cameras and robotic arms, are remotely controlled devices capable of real-time pipeline detection and cleaning, offering precision and safety, suitable for complex pipeline cleaning. However, this technology involves precision instruments, which have high usage and maintenance costs and require highly skilled operators. In industrial production, a large amount of human and material resources are needed for equipment maintenance and personnel training, which increases the production costs of enterprises.
[0004] In summary, existing pipeline clearing technologies for addressing clogging at the outlet of polyester reactors suffer from several drawbacks, including low efficiency, poor safety, high cost, demanding operator skills, and limited applicability. These limitations fail to adequately meet the demands for efficient, safe, and automated pipeline clearing in continuous industrial production. Therefore, there is an urgent need for a device capable of monitoring clogging at the outlet of polyester reactors and automatically performing clearing / discharging actions to overcome the shortcomings of traditional manual clearing methods and existing technologies. Utility Model Content
[0005] In view of this, the present invention proposes a device for unblocking the outlet pipe of a polyester reactor. The device can adjust the actuator specifications according to the usage requirements to unblock pipes of different diameters and materials, and reflect the results to the control system to ensure the continuity and safety of the production process.
[0006] To achieve the above effects, the technical solution of this utility model is implemented as follows, specifically involving:
[0007] A device for clearing the outlet pipe of a polyester reactor includes a crushing cone, a push rod, a connecting flange, a connecting plate, a hydraulic cylinder fixing plate, a hydraulic actuator, and a support frame. The hydraulic cylinder fixing plate is fixed to the support frame, and the hydraulic actuator is fixed to the hydraulic cylinder fixing plate. The push rod is movably connected to the hydraulic cylinder fixing plate. One end of the connecting plate is connected to the actuating end of the hydraulic actuator, and the other end of the connecting plate is fixedly connected to the push rod. The connecting flange is located at the bottom of the outlet chute of the polyester reactor, and the push rod passes through the connecting flange. A crushing cone is installed at the top of the push rod. Optionally, the outlet chute of the polyester reactor is fixed to the upper part of the support frame, and the push rod passes through the connecting flange into the chute, with the push rod matching the position of the outlet of the polyester reactor; preferably, the outlet of the polyester reactor is located directly above the push rod. Optionally, the hydraulic cylinder fixing plate is fixed to the support frame with bolts; preferably, the hydraulic cylinder fixing plate and the support frame are connected by welding. The hydraulic cylinder fixing plate and the hydraulic actuator are connected by screws, and hydraulic cylinders with different strokes can be installed according to the operating conditions. The proposed solution achieves mechanized crushing of solidified materials at the outlet of the polyester reactor through a transmission link of hydraulic actuator-connecting plate-push rod-crushing cone, replacing manual physical contact, improving dredging efficiency and avoiding scratching the inner wall of the pipe.
[0008] In a structure that optimizes the aforementioned solution, an endoscope is further included. The endoscope is positioned at the top of the push rod, and the breaking cone is matched and fixed to the endoscope. Optionally, the breaking cone has a pointed structure with a channel for mounting the endoscope, which is placed within the channel. Preferably, the top of the breaking cone can converge or open with the up-and-down movement of the push rod, and the endoscope is positioned within the space formed by the convergence of the top of the breaking cone. The endoscope is matched and fixed to the breaking cone, allowing for visualization to confirm the location and extent of the blockage before, during, and after unblocking, avoiding excessive or ineffective operations.
[0009] In a structure that optimizes the aforementioned solution, the endoscope is a high-temperature resistant endoscope. The high-temperature resistant endoscope is designed for the high-temperature environment of polyester production, ensuring stable operation of monitoring equipment under harsh conditions and compensating for the shortcomings of existing intelligent robots in terms of "poor weather resistance of precision instruments."
[0010] In a structure that optimizes the aforementioned solution, the crushing cone and the push rod are connected by threads. As a component that directly contacts the solidified material, the crushing cone is a high-frequency consumable part. The threaded connection enables quick disassembly and replacement, avoiding the inefficiency of "overall disassembly and maintenance" in traditional mechanical unblocking devices, and meeting the "easy maintenance" requirements of industrial production.
[0011] In a structure that optimizes the aforementioned solution, the push rod is a hollow structure. The hollow structure provides a dedicated channel for the endoscope signal cable, avoiding wear, interference, or high-temperature damage caused by exposed cables, ensuring stable transmission of monitoring signals, while maintaining the mechanical strength of the push rod, thus balancing functionality and durability.
[0012] In a structure that optimizes the aforementioned solution, a linear bearing is also included. The linear bearing is fixed to the hydraulic cylinder mounting plate, and the push rod is movably connected to the hydraulic cylinder mounting plate. The linear bearing provides linear motion guidance for the push rod, reduces lateral friction during hydraulic actuator operation, avoids jamming, and extends the service life of the push rod and the mounting plate, thus solving the problems of "laborious operation and high transmission loss" in traditional mechanical devices.
[0013] In a structure that optimizes the aforementioned solution, a primary packing seal and a secondary packing seal are also included, arranged sequentially from top to bottom within the connecting flange. The double-layer packing seal prevents material from entering the gap between the connecting flange and the push rod, avoiding material solidification that could jam the push rod and cause unblocking failure. It also prevents the leakage of high-temperature material, thus avoiding safety hazards. The flange and chute are bolted together, facilitating independent replacement of the seals and reducing maintenance complexity. Compared to traditional high-pressure water jet or chemical unblocking agent solutions, this structural design eliminates issues such as "high operating environment requirements" and "safety hazards."
[0014] Compared with the prior art, the present invention provides a device for unblocking the outlet pipe of a polyester reactor, which has the following specific advantages:
[0015] This invention addresses the problems of low efficiency, poor safety, high cost, and limited applicability in existing methods of clearing blockages in the outlet pipes of polyester reactors. It integrates a high-temperature resistant endoscope at the top of the push rod for real-time visual monitoring of material solidification and blockage, replacing manual visual observation and blind clearing. Combined with a hydraulically driven crushing cone mechanical crushing structure, it automatically performs the clearing action, achieving precise judgment and efficient handling of the blockage location and degree, significantly improving production efficiency and continuity, and solving the problems of "low efficiency and high delays in manual operation." The use of a hydraulic actuator to drive the crushing cone through a connecting plate and push rod via a mechanized transmission link completely replaces manual physical contact clearing, avoiding worker exposure to high-temperature and high-risk environments. Simultaneously, the crushing cone tip structure and linear bearing guide design ensure precise crushing action. The system offers high stability, prevents scratches on the inner wall of the pipeline, ensures operational safety, and extends pipeline lifespan. The threaded connection between the crushing cone and push rod enables rapid replacement of vulnerable parts, reducing maintenance time and costs. The primary and secondary packing seals within the connecting flange, combined with bolted connections, prevent material jamming and leakage, and facilitate independent seal replacement. The hollow push rod provides a protective channel for the endoscope signal line. The external hydraulic actuator is conveniently arranged for adjustment and maintenance, significantly reducing operating requirements, maintenance complexity, and operating costs compared to existing technologies. The adjustable hydraulic actuator adapts to different pipe diameters and materials by replacing hydraulic cylinders with different strokes. Linear bearings reduce transmission friction resistance, and the high-temperature resistant endoscope is suitable for high-temperature environments, avoiding damage to pipelines or equipment due to improper pressure control and resource waste. It combines high adaptability, reliability, and economy. Attached Figure Description
[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the device for clearing the outlet pipe of a polyester reactor as described in this utility model.
[0018] Figure 2 This is a schematic diagram of the structure of the device for unblocking the outlet pipe of the polyester reactor described in this utility model.
[0019] Figure 3 This is a partial enlarged schematic diagram of the device for unblocking the outlet pipe of a polyester reactor as described in this utility model.
[0020] Explanation of reference numerals in the attached figures:
[0021] 1. Endoscope, 2. Crushing cone, 3. Push rod, 4. Connecting flange, 5. Bolt, 6. Connecting plate, 7. Hydraulic cylinder fixing plate, 8. Hydraulic actuator, 9. Support frame, 10. Primary packing seal, 11. Secondary packing seal, 12. Linear bearing. Detailed Implementation
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0026] like Figure 1-3 As shown in the figure, a device for clearing the outlet pipe of a polyester reactor includes a support frame 9, a hydraulic cylinder fixing plate 7, a hydraulic actuator 8, a push rod 3, and a crushing cone 2. The support frame 9 is a steel structure, with its vertical end fixed to the bottom platform of the polyester reactor by anchor bolts, the upper part of the horizontal end fixed to the outlet chute of the polyester reactor, and the middle part detachably connected to the hydraulic cylinder fixing plate 7 by bolts, or formed into a rigid integral structure by welding.
[0027] The hydraulic actuator 8 is a hydraulic cylinder, which is fixed to the middle of the hydraulic cylinder fixing plate 7 by screws. Its actuating end extends downward and is connected to the push rod 3 through the connecting plate 6. The push rod 3 is a hollow cylindrical structure with internal threads machined at the top. The body is welded to the connecting plate 6. The middle part passes through the linear bearing 12 fixed to the hydraulic cylinder fixing plate 7. The linear bearing 12 provides vertical motion guidance and reduces frictional resistance.
[0028] The connecting flange 4 is installed at the center of the bottom of the discharge chute using bolts 5. Inside, from top to bottom, a primary packing seal 10 and a secondary packing seal 11 are sequentially installed. Their inner diameters are interference-fitted with the outer diameter of the push rod 3, forming a double-layer sealing structure to prevent high-temperature materials from seeping into the flange gap. The push rod 3 passes through the connecting flange 4 and the packing seal assembly, with its top extending into the chute and facing the polyester reactor discharge port.
[0029] The crushing cone 2 is a frustum-shaped alloy component with an external thread at its bottom end that mates with the internal thread at the top of the push rod 3, forming a detachable connection structure. An axial through hole is located in the middle of the cone for mounting a high-temperature resistant endoscope 1. The lens of the endoscope 1 is flush with the top of the crushing cone 2, and a wire is led out through the hollow cavity of the push rod 3 to an external control system. Preferably, the top of the crushing cone 2 is designed as an openable, closable petal structure. When the push rod 3 moves upward, the petal structure is compressed and aggregated by the inner wall of the discharge port to form a pointed tip, enhancing the crushing rigidity. When resetting downward, the petal structure opens, expanding the monitoring angle of the endoscope 1.
[0030] In terms of structural design, the hydraulic actuator 8 forms a rigid transmission link with the push rod 3 through the connecting plate 6. Combined with the linear bearing 12 fixed to the hydraulic cylinder fixing plate 7, this ensures the vertical movement accuracy of the push rod 3 and avoids the risk of shaking and scratching associated with traditional manual operation. The crushing cone 2 and the push rod 3 are connected by threads, and the connecting flange 4 is connected to the chute by bolts, allowing for quick replacement of vulnerable parts such as the crushing cone and packing seal within 3 minutes without disassembling the main equipment, thus improving maintenance convenience. The endoscope 1 uses an industrial-grade fiber optic endoscope resistant to 200℃ high temperatures, paired with a double-layer high-temperature resistant polytetrafluoroethylene packing seal within the connecting flange 4, forming a high-temperature resistant sealing structure to ensure long-term stable operation of the device in the 150-250℃ high-temperature environment at the polyester reactor outlet. Furthermore, the hollow cavity of the push rod 3 provides an independent channel for the endoscope signal line, with the cable wrapped in a high-temperature resistant silicone sleeve to effectively prevent material contact or mechanical wear, ensuring signal transmission stability.
[0031] When endoscope 1 detects solidified blockage in the discharge pipe, a signal is transmitted to the control system, triggering hydraulic actuator 8 to drive push rod 3 upward, causing crushing cone 2 to break the blockage. After clearing the blockage, push rod 3 resets, and the control system opens the discharge valve to release material, achieving an automated "detection-crushing-discharge" process. Simultaneously, crushing cone 2 can also be manually controlled to move upward, allowing endoscope 1 to check for blockages in the pipe.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A polyester kettle discharge pipe unblocker apparatus, characterized by: It includes a breaking cone (2), a push rod (3), a connecting flange (4), a connecting plate (6), a hydraulic cylinder fixing plate (7), a hydraulic actuator (8), and a support frame (9). The hydraulic cylinder fixing plate (7) is fixed on the support frame (9), the hydraulic actuator (8) is fixed on the hydraulic cylinder fixing plate (7), the push rod (3) is movably connected with the hydraulic cylinder fixing plate (7), one end of the connecting plate (6) is connected with the action end of the hydraulic actuator (8), the other end of the connecting plate (6) is fixedly connected with the push rod (3), the connecting flange (4) is arranged at the bottom of the polyester kettle discharge outlet chute, the push rod (3) passes through the connecting flange (4), and the top end of the push rod (3) is provided with the breaking cone (2).
2. A polyester kettle discharge conduit de-clogging device according to claim 1, characterized in that: It also includes a endoscope (1), which is arranged at the top end of the push rod (3), and the breaking cone (2) is fixedly matched with the endoscope (1).
3. A polyester kettle spout pipe unblocking device according to claim 2, characterized in that: The endoscope (1) is a high-temperature-resistant endoscope.
4. The polyester kettle outlet pipe de-clogging device of claim 1, wherein: The breaking cone (2) is connected with the push rod (3) through threads.
5. A polyester kettle spout pipe unblocking device according to claim 2, characterized in that: The push rod (3) has a hollow structure.
6. The polyester kettle outlet pipe de-clogging device of claim 1, wherein: It also includes a linear bearing (12), which is fixed on the hydraulic cylinder fixing plate (7), and the push rod (3) is movably connected with the hydraulic cylinder fixing plate (7).
7. The polyester kettle outlet pipe de-clogging device of claim 1, wherein: It also includes a primary packing seal (10) and a secondary packing seal (11), which are arranged in the connecting flange (4) from top to bottom.