A pta manhole cleaning tool
By designing a PTA manhole cleaning tool, the problem of raw material waste caused by PTA adhesion during the feeding process was solved, realizing efficient collection and reuse of raw materials, and improving the convenience of cleaning and production stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG YUXIN NEW MATERIALS CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-21
AI Technical Summary
During the feeding process, PTA tends to adhere to the inner wall of the feeding pipe, which narrows the flow channel inside the valve and affects the smooth passage of materials. Furthermore, during cleaning, the gas in the feeding valve pipe and the preparation tank will blow out the PTA, resulting in raw material waste.
Design a PTA manhole cleaning tool, including a blocking bag and a clamp, which connects to the manhole in a sealed manner. The tool is inserted into the pipe through the operating hole to clean the pipe, collect the blown-out PTA, reduce material waste, and enable the reuse of the material through a one-way valve and a negative pressure device.
It effectively reduces raw material waste during PTA cleaning, improves the convenience and efficiency of cleaning, and reduces the impact of cleaning on production.
Smart Images
Figure CN224525519U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of PTA equipment, and more particularly to a PTA manhole cleaning tool. Background Technology
[0002] In the polyester production process, PTA is an essential raw material. The amount and speed of material feeding are usually controlled by rotating the feeding valve to ensure the stability and continuity of the production process.
[0003] PTA is inherently hygroscopic and prone to clumping. When encountering rising moisture from the mixing tank during the feeding process, PTA will adhere to the inner wall of the feed pipe. This accumulation of deposits gradually narrows the flow channel inside the valve, hindering the smooth passage of material and leading to unstable feed rates. Therefore, cleaning the PTA rotary feed valve pipeline is a necessary and regular operation.
[0004] However, there is a certain amount of air pressure in the discharge valve pipeline and the preparation tank. During cleaning, the gas in the discharge valve pipeline and the preparation tank will blow out some PTA, which seriously causes inconvenience in cleaning and waste of raw materials. Utility Model Content
[0005] To reduce PTA waste during the cleaning process, this application provides a PTA manhole cleaning tool.
[0006] The PTA manhole cleaning tool provided in this application adopts the following technical solution:
[0007] A PTA manhole cleaning tool includes a blocking bag with a receiving space inside. The blocking bag has a first connecting hole for sealing and communicating with a manhole. The first connecting hole communicates with the outside of the blocking bag. The blocking bag also has an operating hole, and both the first connecting hole and the operating hole communicate with the receiving space.
[0008] By adopting the above technical solution, the blocking bag is sealed to the manhole during use. Then, the manhole is opened through the operating hole, so that the first connecting hole is sealed and connected to the manhole. Then, the tool is inserted into the manhole through the operating hole to clean the pipeline of the PTA rotary discharge valve. The blown PTA will be collected in the containment space, reducing the waste of raw materials.
[0009] Preferably, the PTA manhole cleaning tool includes a first clamp, which is connected to the barrier bag and located around the first connecting hole. The first clamp is used to tighten and fix the manhole flange.
[0010] The first clamp connects the barrier bag to the manhole flange, making the operation convenient and enabling quick disassembly and assembly.
[0011] Preferably, the PTA manhole cleaning tool includes a first connecting pipe and a first blocking cover. The pipe inside the first connecting pipe is connected to the operating hole. The first connecting pipe and the first blocking cover are detachably connected. The first blocking cover is used to block the first connecting hole from the outside of the blocking bag.
[0012] By setting up the first connecting pipe and the first blocking cover, the amount of dust entering the containment space during idle periods can be reduced, thus preventing excessive impurities in the containment space and affecting the subsequent collection of raw materials.
[0013] Preferably, the barrier bag has a discharge port, and the discharge port and the operating hole are located on both sides of the receiving space; the PTA manhole cleaning tool includes a second connecting pipe and a second blocking cover, the pipe inside the second connecting pipe is connected to the discharge port, the second connecting pipe and the second blocking cover are detachably connected, and the second blocking cover is used to block the discharge port from the outside of the barrier bag.
[0014] By setting up a discharge port, a second connecting pipe, and a second blocking cover, the collected raw materials can be collected from the discharge port. Alternatively, a negative pressure device can be set at the discharge port to quickly collect the raw materials.
[0015] Preferably, the barrier bag is an accordion-style protective cover, and the barrier bag is provided with a first transparent window.
[0016] The first transparent viewing window allows operators to easily observe the cleaning process, making cleaning easier; the accordion-style protective cover of the barrier bag facilitates its collection when not in use.
[0017] Preferably, the blocking bag has a second connecting hole, and a blocking plate is disposed in the second connecting hole. The blocking plate is detachably connected to the blocking bag, and the first connecting hole and the second connecting hole are respectively located at both ends of the accommodating space.
[0018] By setting the second connecting hole and the baffle plate, both the first and second connecting holes can be sealed and connected to the manhole, allowing both ends of the barrier bag to be connected to the manhole, making operation convenient.
[0019] Preferably, the operating hole is closer to the first connecting hole than the discharge port, and the discharge port is closer to the second connecting hole than the operating hole.
[0020] The above-mentioned design makes it easier to insert tools and other equipment into the first connection hole and manhole through the operating hole, thus facilitating operation.
[0021] Preferably, a one-way valve is detachably installed in the operating hole. The one-way valve is used to allow air from the outside of the blocking bag to enter and to prevent air from the containing space from escaping out of the blocking bag.
[0022] By setting a one-way valve, when it is necessary to send the collected raw materials into the pipeline of the PTA rotary feed valve, the one-way valve can be set in the operating hole. By squeezing the blocking bag, the collected raw materials in the receiving space are blown into the pipeline of the PTA rotary feed valve. By stretching the blocking bag, outside air enters the receiving space through the one-way valve. Repeating the above steps will blow all the collected raw materials in the receiving space into the pipeline of the PTA rotary feed valve. Attached Figure Description
[0023] Figure 1 This is a three-dimensional schematic diagram of the PTA manhole cleaning tool of this application.
[0024] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the first connecting pipe after a one-way valve is installed.
[0025] Reference numerals: 1. Barrier bag; 11. Receptacle space; 12. First connecting hole; 13. Second connecting hole; 14. Barrier plate; 15. First end; 16. Second end; 2. Operating hole; 21. First connecting pipe; 22. First barrier cover; 31. First clamp; 32. Second clamp; 4. Discharge port; 41. Second connecting pipe; 42. Second barrier cover; 51. First transparent window; 52. Second transparent window; 6. One-way valve. Detailed Implementation
[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0027] This application discloses a PTA manhole cleaning tool. (Refer to...) Figure 1 as well as Figure 2 The PTA manhole cleaning tool includes a barrier bag 1, which has a first end 15 and a second end 16. The first end 15 and the second end 16 are distributed along the length of the barrier bag 1. The barrier bag 1 has a receiving space 11 located between the first end 15 and the second end 16.
[0028] The first end 15 has a first connecting hole 12, which communicates with the receiving space 11. The first connecting hole 12 is used to seal and communicate with the manhole 7. The PTA manhole cleaning tool includes a first clamp 31, which is located around the first connecting hole 12 and is fixedly connected to the first end 15. The first clamp 31 is used to tighten and fix it on the flange of the manhole 7, which can realize quick disassembly and quick assembly of the barrier bag 1 and the manhole 7.
[0029] The barrier bag 1 is an accordion-style protective cover; in other words, the barrier bag 1 can be compressed or stretched along its length.
[0030] The barrier bag 1 has an operating hole 2, which communicates with the receiving space 11. The PTA manhole cleaning tool includes a first connecting pipe 21 and a first blocking cover 22. One end of the first connecting pipe 21 is fixedly connected to the barrier bag 1. The pipe inside the first connecting pipe 21 communicates with the operating hole 2. The first connecting pipe 21 and the first blocking cover 22 are detachably connected. The first blocking cover 22 is used to block the first connecting hole 12 from the outside of the barrier bag 1. Specifically, the first blocking cover 22 is threadedly connected to the first connecting pipe 21.
[0031] A one-way valve 6 is detachably installed in the operating hole 2. The one-way valve 6 is used to allow air from the outside of the blocking bag 1 to enter and to prevent air from the containing space 11 from escaping from the outside of the blocking bag 1. The one-way valve 6 has a threaded part and is threadedly connected to the wall of the operating hole 2.
[0032] The second end 16 has a second connecting hole 13, which extends through the barrier bag 1 along its length. A barrier plate 14 is installed inside the second connecting hole 13. The PTA manhole cleaning tool includes a second clamp 32, which is located around the second connecting hole 13 and the barrier plate 14. The second clamp 32 is fixedly connected to the second end 16 and is tightly fixed to the barrier plate 14, thereby fixing the barrier bag 1 and the barrier plate 14 to each other. The barrier plate 14 can be made of transparent material.
[0033] The barrier bag 1 has a discharge port 4, which is connected to the receiving space 11. The PTA manhole cleaning tool includes a second connecting pipe 41 and a second blocking cover 42. The second connecting pipe 41 is fixedly connected to the barrier bag 1, and the pipe inside the second connecting pipe 41 is connected to the discharge port 4. The second connecting pipe 41 and the second blocking cover 42 are detachably connected. Specifically, the second blocking cover 42 is threadedly connected to the second connecting pipe 41. The second blocking cover 42 is used to block the discharge port 4 from the outside of the barrier bag 1.
[0034] The blocking bag 1 is cylindrical. Along the radial direction of the blocking bag 1, the discharge port 4 and the operating hole 2 are located on both sides of the blocking bag 1. Along the length direction of the blocking bag 1, the operating hole 2 is closer to the first connecting hole 12 than the discharge port 4, and the discharge port 4 is closer to the second connecting hole 13 than the operating hole 2.
[0035] The barrier bag 1 is provided with a first transparent window 51 and a second transparent window 52. The first transparent window 51 and the second transparent window 52 are distributed along the length direction of the barrier bag 1. Along the length direction of the barrier bag 1, the first transparent window 51 is closer to the first connecting hole 12 than the second transparent window 52, and the second transparent window 52 is closer to the second connecting hole 13 than the first transparent window 51. The operator can observe the operation through the first transparent window 51, which is convenient for cleaning.
[0036] The implementation principle of a PTA manhole cleaning tool according to an embodiment of this application is as follows: When in use, the first connecting hole 12 is fitted onto the manhole 7, the first clamp 31 is tightened onto the flange of the manhole 7, the second blocking cover 42 is tightened, the first blocking cover 22 is opened, the window of the manhole 7 is opened by operation, and then the tool is inserted into the manhole 7 through the operation hole 2 to perform cleaning operation, and the cleaning situation can be observed through the first transparent viewing window 51.
[0037] When it is necessary to collect the raw materials inside the barrier bag 1, there are two methods: Method 1: Tighten the first barrier cover 22 and loosen the second barrier cover 42, and then collect the raw materials inside the barrier bag 1 using a negative pressure pump; Method 2: The one-way valve 6 can be threaded into the first connecting pipe 21, and the second barrier cover 42 can be tightened. By pushing the barrier bag 1, due to the presence of the one-way valve 6, the raw materials inside the barrier bag 1 can only re-enter through the manhole 7. Then, by pulling the barrier bag 1, due to the presence of the one-way valve 6, the outside gas can enter the barrier bag 1 through the one-way valve 6. By repeating the above steps, the raw materials inside the barrier bag 1 can be reused. The structure is simple.
[0038] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A PTA manhole cleaning tool, characterized in that: Includes a barrier bag (1), which has a receiving space (11) inside. The barrier bag (1) has a first connecting hole (12) for sealing and communicating with a manhole (7). The first connecting hole (12) communicates with the outside of the barrier bag (1). The barrier bag (1) has an operating hole (2). Both the first connecting hole (12) and the operating hole (2) communicate with the receiving space (11).
2. The PTA manhole cleaning tool according to claim 1, characterized in that: The PTA manhole cleaning tool includes a first clamp (31), which is connected to the barrier bag (1) and is located around the first connecting hole (12). The first clamp (31) is used to tighten and fix it to the flange of the manhole (7).
3. The PTA manhole cleaning tool according to claim 1, characterized in that: The PTA manhole cleaning tool includes a first connecting pipe (21) and a first blocking cover (22). The pipe inside the first connecting pipe (21) is connected to the operating hole (2). The first connecting pipe (21) and the first blocking cover (22) are detachably connected. The first blocking cover (22) is used to block the first connecting hole (12) from the outside of the blocking bag (1).
4. The PTA manhole cleaning tool according to claim 3, characterized in that: The barrier bag (1) has a discharge port (4), and the discharge port (4) and the operation hole (2) are located on both sides of the accommodating space (11); the PTA manhole cleaning tool includes a second connecting pipe (41) and a second blocking cover (42). The pipe in the second connecting pipe (41) is connected to the discharge port (4), and the second connecting pipe (41) and the second blocking cover (42) are detachably connected. The second blocking cover (42) is used to block the discharge port (4) from the outside of the barrier bag (1).
5. The PTA manhole cleaning tool according to claim 1, characterized in that: The barrier bag (1) is an accordion-style protective cover, and the barrier bag (1) is provided with a first transparent window (51).
6. The PTA manhole cleaning tool according to claim 4, characterized in that: The blocking bag (1) has a second connecting hole (13), and a blocking plate (14) is provided in the second connecting hole (13). The blocking plate (14) is detachably connected to the blocking bag (1), and the first connecting hole (12) and the second connecting hole (13) are located at both ends of the accommodating space (11).
7. The PTA manhole cleaning tool according to claim 6, characterized in that: The operating hole (2) is closer to the first connecting hole (12) than the discharge port (4), and the discharge port (4) is closer to the second connecting hole (13) than the operating hole (2).
8. The PTA manhole cleaning tool according to claim 1, characterized in that: A one-way valve (6) is detachably installed in the operation hole (2). The one-way valve (6) is used to allow air from the outside of the blocking bag (1) to enter and to prevent air from the containment space (11) from running out of the blocking bag (1).