CN113058947A - Modified starch vacuum pipeline cleaning equipment - Google Patents

Modified starch vacuum pipeline cleaning equipment Download PDF

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Publication number
CN113058947A
CN113058947A CN202110353728.2A CN202110353728A CN113058947A CN 113058947 A CN113058947 A CN 113058947A CN 202110353728 A CN202110353728 A CN 202110353728A CN 113058947 A CN113058947 A CN 113058947A
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CN
China
Prior art keywords
layer
block
modified starch
cleaning
guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110353728.2A
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Chinese (zh)
Inventor
黄飞兢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Yisheng Information Technology Co ltd
Original Assignee
Guangzhou Yisheng Information Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Yisheng Information Technology Co ltd filed Critical Guangzhou Yisheng Information Technology Co ltd
Priority to CN202110353728.2A priority Critical patent/CN113058947A/en
Publication of CN113058947A publication Critical patent/CN113058947A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/04Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/032Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing

Abstract

The invention provides a modified starch vacuum pipeline cleaning device, which structurally comprises a control end, a friction block, an introduction ring, an outer cylinder and a cleaner, wherein the outer layer of the control end is integrated with the friction block, the introduction ring is arranged at the front side of the control end, and the outer cylinder penetrates through the introduction ring, the cleaning device can effectively clean all corners of a vacuum tube while cleaning the vacuum tube according to the condition that a movable shaft arranged in the cleaning device can be continuously bent and changed along with the extension direction of a curve of the vacuum tube, so that the cleaning ring can be effectively driven and expanded in the recovery process, the cleaning ring can be attached to the inner part of the vacuum tube and can move along with the recovery of the cleaning device, the cleaning device can effectively clean residual starch in the vacuum tube through a cleaning component of the cleaning device, thereby effectively improving the cleaning efficiency.

Description

Modified starch vacuum pipeline cleaning equipment
Technical Field
The invention relates to the field of vacuum tubes, in particular to modified starch vacuum tube cleaning equipment.
Background
Modified starch needs to be continuously transmitted through a vacuum pipeline in the processing process, and then the vacuum pipeline can be cleaned directly through vacuum pipeline cleaning equipment after the processing is finished, so that the cleaning efficiency can be effectively improved through the convenience and flexibility of the cleaning equipment, and a large amount of time effect can be saved;
in summary, the present inventors found that the existing vacuum pipeline cleaning device mainly has the following defects: vacuum pipe cleaning equipment has the vacuum tube of bend to clean simultaneously because current cleaning equipment only can carry out straight stretching into the pipeline with the cleaner and operate, makes cleaning equipment can not clear away all starch in the bend to vacuum tube after to the bend only can remove cleaning equipment again and clear up it, makes it can directly increase the clear duration and reduce the clean efficiency condition.
Disclosure of Invention
The technical scheme adopted by the invention for realizing the technical purpose is as follows: the utility model provides a modified starch vacuum line cleaning equipment, its structure includes control end, clutch blocks, leading-in ring, urceolus, duster, the control end skin is as an organic whole with the clutch blocks, leading-in ring installs in the front side of control end, the urceolus runs through in leading-in ring, the duster is embedded in the urceolus and carries out control connection with the control end.
The remover is provided with a layer body, a fixed block, a limiting frame and a removing device, wherein the inner side of the layer body is fixedly connected with the fixed block, the limiting frame is arranged in the circle center of the layer body, the removing device is embedded in the limiting frame, the fixed block is internally provided with six blocks in total, and corresponding gaps are arranged among the six blocks and the six blocks form a hexagonal shape with each other.
As a further improvement of the invention, the clearing device is provided with a telescopic seat, a connecting layer, a movable shaft and a clearing block, the front end of the telescopic seat is movably connected with the connecting layer, the movable shaft penetrates through the connecting layer, the clearing block is embedded in the movable shaft and movably connected with the telescopic seat, the movable shaft is made of a material with better elasticity, toughness and the like, and the outer end of the movable shaft is in a smooth state.
As a further improvement of the invention, the clearing block is provided with a fixed point block, a movable seat, a mandril and a clearing layer, the outer layer of the fixed point block is movably connected with the movable seat, the mandril is embedded in the movable seat, the inner wall of the clearing layer is movably connected with the end point of the mandril, the mandril can move along with the movement of each part, and further can drive the clearing layer connected with the mandril to expand, and the end surface of the clearing layer is in a smooth shape.
As a further improvement of the invention, the cleaning layer is provided with a connector, a rotating wheel and a scraping shaft, the upper end of the connector is movably connected with the rotating wheel, the scraping shaft is movably connected onto the end face of the rotating wheel and is made of stainless steel, and a protective layer is arranged at the top end of the scraping shaft.
As a further improvement of the present invention, the scraping shaft is provided with a solid block, an adhesive layer, a movable rod, a scraper, and a penetrating layer, the upper end of the solid block and the adhesive layer are integrated, the movable rod is installed below the adhesive layer, the scraper and the movable rod are movably connected, the penetrating layer is installed at the front end of the scraper, the middle part of the scraper is in an unsealing state, and the scraper can move along with the movement of the movable rod.
As a further improvement of the invention, the movable shaft is provided with a guide block, a spring and a contact layer, the rear end of the guide block is provided with the spring, the inner side of the contact layer is embedded with the spring and movably connected, and the contact layer is internally provided with six springs in total, so that the contact layer can be driven by the spring.
As a further improvement of the invention, the guide block is provided with a block body, a guide channel, a collecting box, a scattering groove and a fixed block, wherein the block body is integrated with and communicated with the guide channel, the collecting box is fixedly connected with and communicated with the lower end of the guide channel, the scattering groove is arranged at the lower end of the collecting box and communicated with the lower end of the collecting box, the fixed block is fixedly connected into two side parts of the collecting box, and the bottom end in the collecting box is provided with a switch port, so that the residual starch can be effectively collected through the guide channel and concentrated into the collecting box.
As a further improvement of the invention, the fixed block is provided with a limit layer, a guide groove, a transmission channel and a through hole, the side edge of the limit layer is provided with the guide groove and is integrated, the transmission channel is arranged on the side edge of the guide groove, the through hole is arranged on the side edge of the transmission channel and is communicated with the side edge of the transmission channel, and the guide groove and the transmission channel are in a hollow state.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the vacuum tube cleaning device, the vacuum tube can be cleaned by the cleaning device, meanwhile, all corners of the vacuum tube can be effectively removed under the condition that the movable shaft arranged in the vacuum tube can be continuously bent and changed along with the extension direction of the bend of the vacuum tube, so that the cleaning device can effectively drive and expand the cleaning ring in the recovery process, the cleaning ring can be attached to the inner part of the vacuum tube and can move along with the recovery of the cleaning device, the cleaning device can effectively remove residual starch in the vacuum tube, and the cleaning device can effectively remove the starch in the vacuum tube through the cleaning component of the cleaning device, so that the cleaning efficiency can be effectively improved.
2. The cleaning device comprises a cleaning component, a guide block and a cleaning device, wherein the cleaning component is arranged on the outer surface of the guide block, the guide block is arranged on the outer surface of the cleaning component, the cleaning device is arranged on the outer surface of the guide block, the guide block is arranged on the outer surface of the guide block, and the cleaning device is arranged on the outer surface of the guide block.
Drawings
FIG. 1 is a schematic structural diagram of a modified starch vacuum pipeline cleaning device.
Fig. 2 is a schematic top view of a cleaner.
Fig. 3 is a side view of a cleaning device.
Fig. 4 is a schematic top view of a cleaning block.
Fig. 5 is a schematic diagram of a side view of a removal layer.
Fig. 6 is a sectional view of a scraper shaft.
Fig. 7 is a side view of the movable shaft.
Fig. 8 is a schematic sectional view of a guide block.
Fig. 9 is a schematic structural view of the inside of a fixed block.
In the figure: control end-1, friction block-2, leading-in ring-3, outer cylinder-4, cleaner-5, layer body-51, fixed block-52, limit frame-53, cleaner-54, telescopic seat-541, connecting layer-542, movable shaft-543, cleaning block-544, fixed point block-a 1, movable seat-a 2, push rod-a 3, cleaning layer-a 4, connector-a 41, rotating wheel-a 42, scraping shaft-a 43, solid block-b 1, jointing layer-b 2, movable rod-b 3, scraper-b 4, penetrating layer-b 5, guide block-c 1, spring-c 2, contact layer-c 3, block-c 11, guide channel-c 12, collecting box-c 13, scattering groove-c 14, fixed block-c 15, fixed block-c 352, A limiting layer-d 1, a guide groove-d 2, a transmission channel-d 3 and a through opening-d 4.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1:
fig. 1 to 6 show:
the invention provides a modified starch vacuum pipeline cleaning device,
the structure of the cleaning device comprises a control end 1, a friction block 2, a guide-in ring 3, an outer cylinder 4 and a cleaner 5, wherein the outer layer of the control end 1 is integrated with the friction block 2, the guide-in ring 3 is installed on the front side of the control end 1, the outer cylinder 4 penetrates through the guide-in ring 3, and the cleaner 5 is embedded into the outer cylinder 4 and is in control connection with the control end 1.
The remover 5 is provided with a layer body 51, a fixed block 52, a limit frame 53 and a removing device 54, wherein the inner side of the layer body 51 is fixedly connected with the fixed block 52, the limit frame 53 is arranged in the circle center of the layer body 51, the removing device 54 is embedded in the limit frame 53, six fixed blocks 52 are arranged in the layer body 51, corresponding gaps and hexagonal shapes formed by the gaps are formed among the six fixed blocks 52, the fixed block 52 can be effectively and fixedly arranged in the outer side of the vacuum pipeline, and the stable operation of the removing device 54 can be effectively maintained under the fixing effect of the fixed block 52.
The removing device 54 is provided with an expansion seat 541, a connecting layer 542, a movable shaft 543 and a removing block 544, the front end of the expansion seat 541 is movably connected with the connecting layer 542, the movable shaft 543 penetrates through the connecting layer 542, the removing block 544 is embedded in the movable shaft 543 and movably connected with the expansion seat 541, the movable shaft 543 is made of a material with good elasticity, toughness and other properties, the outer end of the movable shaft 543 is in a smooth state, the movable shaft 543 can effectively bend and extend along with a curve in the vacuum pipeline under the condition of the self material and the outer end smooth state, and starch can be effectively prevented from scattering on the movable shaft 543 through the smooth state of the outer end.
The cleaning block 544 is provided with a fixed point block a1, a movable seat a2, a push rod a3 and a cleaning layer a4, the outer layer of the fixed point block a1 is movably connected with the movable seat a2, the push rod a3 is embedded in the movable seat a2, the inner wall of the cleaning layer a4 is movably connected with the end point of the push rod a3, the push rod a3 can move along with the movement of each component, and further can drive the cleaning layer a4 connected with the push rod a to expand, the end face of the cleaning layer a4 is in a smooth shape, and the cleaning layer a4 expands along with the movement of the push rod a3 and can be effectively attached to the inner wall of the pipeline.
Wherein, clearance layer a4 is equipped with connector a41, runner a42, scrapes off axle a43, connector a41 upper end and runner a42 carry out swing joint, scrape off axle a43 swing joint on the terminal surface of runner a42, scrape off axle a43 and make for stainless steel metal, make the top of scraping off axle a43 and be equipped with the protective layer, scrape off axle a43 and can effectually prolong life cycle itself through the material effect of self to can not cause bad effects such as scraping to the pipeline inner wall when making it move through the protective layer on self top.
The scraping shaft a43 is provided with a solid block b1, an adhesive layer b2, a movable rod b3, a scraper b4 and a penetrating layer b5, the upper end of the solid block b1 is integrated with the adhesive layer b2, the movable rod b3 is installed below the adhesive layer b2, the scraper b4 is movably connected with the movable rod b3, the penetrating layer b5 is installed at the front end of the scraper b4, the middle part of the scraper b4 is in an unsealing state and can move along with the movement of the movable rod b3, and the scraper b4 can effectively and continuously scrape starch blocks condensed on the inner wall of the pipeline in the unsealing state of the middle part of the scraper b4, so that the effect of completely removing starch can be achieved.
The specific functions and operation flow of this embodiment are as follows:
according to the invention, the cleaning equipment can effectively control the cleaner 5 in the outer cylinder 4 to operate through the control end 1, meanwhile, the use stability of users can be improved through the friction block 2, the cleaner 5 can extend out through the control end 1, meanwhile, the fixed block 52 can fix the outer side of the pipeline, the cleaning device 54 can continue to extend out, the telescopic seat 541 further extends out the movable shaft 543 through the connecting layer 542, the movable shaft 543 can be continuously changed through the flexibility of the movable shaft 543 when encountering a bend of the pipeline, so that the effect of passing the bend is achieved, further, the movable seat a2 arranged in the cleaning block 544 can move along with the recovery effect of the equipment when extending into the bend to be recovered and cleaned extremely, the cleaning layer a4 can be expanded through the ejector rod a3, so that the connector a41 arranged in the cleaning layer a4 can drive the rotating wheel a42 to ascend, and further, the scraping shaft a43 can be attached to the inner wall of the pipeline Thereby can stretch out under the drive of the in-process scraper b4 of scraping off axle a43 of retrieving through movable rod b3 and make it can be effectual carry out effectual getting rid of the starch piece on the inner wall, thereby reach the effect of clearing away completely, to sum up cleaning device can be effectual clear away totally starch in the vacuum tube through the cleaning component of self, and then can effectual promotion cleaning efficiency.
Example 2:
fig. 7 to 9 show:
the invention provides a modified starch vacuum pipeline cleaning device,
the structure of the pipeline automatic adjusting device comprises a guide block c1, a spring c2 and a contact layer c3, wherein the rear end of the guide block c1 is provided with the spring c2, the inner side of the contact layer c3 is embedded with the spring c2 and movably connected, the contact layer c3 is internally provided with six springs c2, so that the contact layer c can be driven by the spring c2, the contact layer c3 can be effectively adjusted automatically according to the diameter of a pipeline through the spring c2 arranged in the contact layer c3, and the pipeline automatic adjusting device can be applied to pipelines with different diameters.
The guide block c1 is provided with a block c11, a guide channel c12, a collection box c13, a scattering groove c14 and a fixed block c15, the block c11 is integrated with and communicated with the guide channel c12, the collection box c13 is fixedly connected with and communicated with the lower end of the guide channel c12, the scattering groove c14 is mounted at and communicated with the lower end of the collection box c13, the fixed block c15 is fixedly connected with the two side parts of the collection box c13, the bottom end inside the collection box c13 is provided with an opening and closing port, so that residual starch can be effectively collected through the guide channel c12 and collected into the collection box c13, and the opening and closing port at the bottom end of the collection box c13 can be opened while equipment is recovered from a pipeline, so that the starch in the collection box c13 can be effectively discharged.
The fixed block c15 is provided with a limiting layer d1, a guide groove d2, a transmission channel d3 and a through opening d4, the side edge of the limiting layer d1 is provided with a guide groove d2 and is integrated with the guide groove d2, the transmission channel d3 is installed on the side edge of the guide groove d2, the through opening d4 is installed on the side edge of the transmission channel d3 and is communicated with the guide groove d2 and the transmission channel d3 are in a hollow state, the hollow state of the guide groove d2 and the transmission channel d3 can effectively guide wind energy generated by the device in operation, and the wind energy can be effectively transmitted to corresponding components to further process starch.
The specific functions and operation flow of this embodiment are as follows:
in the invention, under the basic action of embodiment 1, the spring c2 installed in the contact layer c3 in the movable shaft 543 can be continuously adjusted according to the diameter of the pipeline, so that the movable shaft 543 can be adapted to various pipelines to operate, when the guide block c1 starts to go deep into the pipeline, the guide channel c12 in the guide block c1 can effectively collect the starch scattered in the pipeline, and the starch enters the collection box c13 through the guide channel c12 and can be fixed through the fixed block c15, and the fixed block c15 can continuously guide the wind energy generated by the equipment into the collection box c13 through the effect of the self d2 and the transmission channel d3, so as to further process the starch, when the starch is removed and recovered out of the pipeline, the open-close port installed at the bottom end of the collection box c13 can be opened, further, the effect of discharging the starch in the collecting box c13 is achieved, and in conclusion, the structure of the guide block c1 can effectively collect the dropped starch and prevent the starch from scattering on the outer layer of the guide block c1, which causes an increase in difficulty in the subsequent treatment.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.

Claims (8)

1. The utility model provides a modified starch vacuum line cleaning equipment, its structure includes control end (1), clutch blocks (2), leading-in ring (3), urceolus (4), duster (5), its characterized in that: the outer layer of the control end (1) is integrated with the friction block (2), the guide-in ring (3) is installed on the front side of the control end (1), the outer cylinder (4) penetrates through the guide-in ring (3), and the cleaner (5) is embedded into the outer cylinder (4) and is in control connection with the control end (1);
the clearer (5) is provided with a layer body (51), a fixing block (52), a limiting frame (53) and a clearing device (54), the inner side of the layer body (51) is fixedly connected with the fixing block (52), the limiting frame (53) is installed in the circle center of the layer body (51), and the clearing device (54) is embedded in the limiting frame (53).
2. The vacuum pipeline cleaning equipment for modified starch as claimed in claim 1, wherein: the clearing device (54) is provided with an expansion seat (541), a connecting layer (542), a movable shaft (543) and a clearing block (544), the front end of the expansion seat (541) is movably connected with the connecting layer (542), the movable shaft (543) penetrates through the connecting layer (542), and the clearing block (544) is embedded into the movable shaft (543) and movably connected with the expansion seat (541).
3. The vacuum pipeline cleaning equipment for modified starch as claimed in claim 2, wherein: the cleaning block (544) is provided with a fixed point block (a 1), a movable seat (a 2), a mandril (a 3) and a cleaning layer (a 4), the outer layer of the fixed point block (a 1) is movably connected with the movable seat (a 2), the mandril (a 3) is embedded in the movable seat (a 2), and the inner wall of the cleaning layer (a 4) is movably connected with the end point of the mandril (a 3).
4. The vacuum pipeline cleaning equipment for modified starch as claimed in claim 3, wherein: the cleaning layer (a 4) is provided with a connector (a 41), a rotating wheel (a 42) and a scraping shaft (a 43), the upper end of the connector (a 41) is movably connected with the rotating wheel (a 42), and the scraping shaft (a 43) is movably connected onto the end face of the rotating wheel (a 42).
5. The vacuum pipeline cleaning equipment for modified starch as claimed in claim 4, wherein: scrape off axle (a 43) and be equipped with solid piece (b 1), laminating layer (b 2), movable rod (b 3), scraper (b 4), penetrating layer (b 5), solid piece (b 1) upper end and laminating layer (b 2) are as an organic whole, movable rod (b 3) are installed in the below of laminating layer (b 2), scraper (b 4) carry out swing joint with movable rod (b 3), the front end in scraper (b 4) is installed in penetrating layer (b 5).
6. The vacuum pipeline cleaning equipment for modified starch as claimed in claim 2, wherein: the movable shaft (543) is provided with a guide block (c 1), a spring (c 2) and a contact layer (c 3), the spring (c 2) is mounted at the rear end of the guide block (c 1), and the spring (c 2) is embedded in the inner side of the contact layer (c 3) and movably connected with the contact layer.
7. The vacuum pipeline cleaning equipment for modified starch as claimed in claim 6, wherein: the guide block (c 1) is provided with a block body (c 11), a guide channel (c 12), a collecting box (c 13), a scattering groove (c 14) and a fixing block (c 15), the block body (c 11) and the guide channel (c 12) are integrated and communicated, the collecting box (c 13) is fixedly connected to the lower end of the guide channel (c 12) and communicated, the scattering groove (c 14) is installed at the lower end of the collecting box (c 13) and communicated, and the fixing block (c 15) is fixedly connected to the two side portions of the collecting box (c 13).
8. The vacuum pipeline cleaning equipment for modified starch as claimed in claim 7, wherein: fixed block (c 15) are equipped with spacing layer (d 1), guiding groove (d 2), transmission channel (d 3), opening (d 4), spacing layer (d 1) side is equipped with guiding groove (d 2) and as an organic whole, the side in guiding groove (d 2) is installed in transmission channel (d 3), opening (d 4) are installed in the side of transmission channel (d 3) and are communicated with each other.
CN202110353728.2A 2021-04-01 2021-04-01 Modified starch vacuum pipeline cleaning equipment Pending CN113058947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110353728.2A CN113058947A (en) 2021-04-01 2021-04-01 Modified starch vacuum pipeline cleaning equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110353728.2A CN113058947A (en) 2021-04-01 2021-04-01 Modified starch vacuum pipeline cleaning equipment

Publications (1)

Publication Number Publication Date
CN113058947A true CN113058947A (en) 2021-07-02

Family

ID=76565259

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110353728.2A Pending CN113058947A (en) 2021-04-01 2021-04-01 Modified starch vacuum pipeline cleaning equipment

Country Status (1)

Country Link
CN (1) CN113058947A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002023582A (en) * 2000-07-07 2002-01-23 Hitachi Koki Co Ltd Device for detecting rotation of cleaning brush
CN203437382U (en) * 2013-08-29 2014-02-19 山东科技大学 Robot cleaner for pipe with variable diameter
CN203648939U (en) * 2014-01-12 2014-06-18 曹智勇 Damping type pipe cleaning device of oil and gas pipelines
CN203803872U (en) * 2014-03-24 2014-09-03 杭州海勒科技有限公司 Oilfield pipeline washing and de-scaling device
CN207662853U (en) * 2017-11-22 2018-07-27 宋欢 A kind of pipeline flaw detection device
CN211774501U (en) * 2020-03-03 2020-10-27 张勇 Building pipeline overhauls device
CN112024545A (en) * 2020-08-26 2020-12-04 河南科技大学 Central air conditioning tuber pipe clearance ware

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002023582A (en) * 2000-07-07 2002-01-23 Hitachi Koki Co Ltd Device for detecting rotation of cleaning brush
CN203437382U (en) * 2013-08-29 2014-02-19 山东科技大学 Robot cleaner for pipe with variable diameter
CN203648939U (en) * 2014-01-12 2014-06-18 曹智勇 Damping type pipe cleaning device of oil and gas pipelines
CN203803872U (en) * 2014-03-24 2014-09-03 杭州海勒科技有限公司 Oilfield pipeline washing and de-scaling device
CN207662853U (en) * 2017-11-22 2018-07-27 宋欢 A kind of pipeline flaw detection device
CN211774501U (en) * 2020-03-03 2020-10-27 张勇 Building pipeline overhauls device
CN112024545A (en) * 2020-08-26 2020-12-04 河南科技大学 Central air conditioning tuber pipe clearance ware

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Application publication date: 20210702

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