CN110043712A - A kind of vertical the water intaking flexible pipe of deep well is laid with and maintenance construction equipment - Google Patents
A kind of vertical the water intaking flexible pipe of deep well is laid with and maintenance construction equipment Download PDFInfo
- Publication number
- CN110043712A CN110043712A CN201910402673.2A CN201910402673A CN110043712A CN 110043712 A CN110043712 A CN 110043712A CN 201910402673 A CN201910402673 A CN 201910402673A CN 110043712 A CN110043712 A CN 110043712A
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- China
- Prior art keywords
- hose
- deep well
- fixture
- laid
- crane
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
Abstract
The invention discloses a kind of vertical the water intaking flexible pipe laying of deep well and maintenance construction equipment, including laying apparatus and drainage arrangement, drainage arrangement includes hose, draining plug screw between hose and water pump is set and enters hose and the cleaning device for triggering draining plug screw, cleaning device includes shell, is provided with liquid injection pipe in shell；Outer casing bottom is provided with rotary shaft, and ring flange is provided in rotary shaft, and the lower surface of ring flange is evenly arranged at least four pieces of scale removal portions, ring flange center close to the position on disk side and is provided with weight；Laying apparatus includes crane, and hanger and radio and tape player are provided on crane, and suspension hook is provided on hanger, and there are two fixture, the fixture length is greater than deep well width for setting on hose, and the water pump and the hose junction are provided with the first lifting lug.The present invention being put into hose fast and stable deep well and be fixed, and can quickly and efficiently clear up the dirt on tube wall.
Description
Technical field
The present invention relates to pipe well field of tool, and in particular to a kind of vertical the water intaking flexible pipe of deep well is laid with and maintenance construction is set
It is standby.
Background technique
Deep well refers to the well for obtaining depth underground water, and usually in arid area, such as NW China is relatively common, main to use
To obtain deep phreatic water (i.e. 20 meters of underground water below), user need to only pay a small amount of electricity charge, and deep water well depth is deeper,
Existing apparatus is typically all to pass through winder directly hose is put into well, during putting pipe hose be easy scrape along the ground or
The deep well borehole wall, cause hose damage cannot use, it is time-consuming and laborious, during putting pipe, in hose may there are part water with
And hose can be contaminated in the process, since effective scale removal can not be carried out using existing apparatus in deep well.
Summary of the invention
It is laid with the technical problem to be solved in the present invention is to provide a kind of vertical the water intaking flexible pipe of deep well and maintenance construction equipment,
Structure is simple, easy to operate, being put into hose fast and stable deep well and be fixed, and can after fixation quickly
Efficiently clear up the dirt on tube wall.
In order to solve the above-mentioned technical problems, the present invention provides a kind of vertical the water intaking flexible pipe laying of deep well and maintenance constructions
Equipment, including laying apparatus and drainage arrangement, the drainage arrangement include hose, and the draining spiral shell between hose and water pump is arranged in
Hose and the cleaning device for triggering draining plug screw are filled in and enter, the cleaning device includes shell, is set in the shell
It is equipped with liquid injection pipe, the side of the cleaning device is provided with piston rod, and support backing plate, the support are provided on the piston rod
It is provided with through-hole on backing plate, cleaning head is provided on the liquid injection pipe, the cleaning head passes through the through-hole and is fixed on the branch
On stake pad plate；The outer casing bottom is provided with rotary shaft, and ring flange, the lower surface of the ring flange are provided in the rotary shaft
Position close to disk side is evenly arranged at least four pieces of scale removal portions, and the scale removal portion uniformly divides along the excircle of the ring flange
Cloth, the scale removal portion are provided with the outer edge contacted with hose, and the ring flange center is provided with weight；The laying apparatus packet
Crane is included, hanger and radio and tape player are provided on the crane, the radio and tape player is used for retracting hose, is provided with and hangs on the hanger
Hook, there are two fixtures, the suspension hook to sling the fixture by connecting rope and the hose is put into deep water for setting on the hose
Well, the fixture length are greater than deep well width, and the water pump and the hose junction are provided with the first lifting lug.
Further, the fixture is made of two clamping plates, is fixed between two clamping plates by screw, one of them
The second lifting lug is provided on the clamping plate, the structure of second lifting lug is semicircle.
Further, described hose one end is provided with joint flange, and the joint flange passes through screw phase with the water pump
Connection.
Further, the hose is provided with terminal flange far from one end of water pump, is provided with well head on the deep well
Flange, the terminal flange are attached with the wellhead flange by screw.
Further, the hanger is scalable, and described hanger one end is provided with pulley.
Further, connecting hook is provided between the suspension hook and the fixture.
Further, the cover top portion is provided with controller, and the controller is connect with ground instrument, on the shell
It is provided with image collecting device.
Further, outer seal ring is provided on the support backing plate.
Further, the cover top portion is provided with steel pipe, and described steel pipe one end is provided with interconnecting piece, interconnecting piece with it is electronic
Cucurbit lifts or connects the next section of steel pipe, and the next section of steel pipe and electric block lift.
Further, including a kind of laying method, laying method is the following steps are included: (1) uses water pump and joint flange
It is bolted, and is fixed two safety ropes with the first lifting lug, be placed in well head waiting and go into the well；(2) radio and tape player is controlled, is received
Machine cooperation crane common operational is put, in long 10 meters or so the place's stationary fixtures of hose；(3) fixture is sling with crane, lifts water pump, it is right
Quasi- well head, slow G.I.H；(4) fixture is snapped at well head, and hoist lifting hook is removed；(5) use (2) method after
Continuous fixed radio and tape player, radio and tape player cooperate crane common operational, fix second fixture at long 10 meters or so the places of hose；(6) crane
Second fixture is sling, radio and tape player puts pipe, until that can lift the fixture at well head；(7) fixture dismantled at well head, crane continue
Decentralization pipeline to second fixture is stuck at well head；(8) (2)-(7) operation is repeated all to transfer in well until hose, it will be whole
End flanges are connected with wellhead flange, and fixed safety rope, crane slings wellhead flange, to good bolt hole, fixation of bolting on, and operation
It completes
Beneficial effects of the present invention: present apparatus structure is simple, easy to operate, is made using the cooperation of radio and tape player, crane and fixture
With, can by hose quick nondestructive it is bad be put into deep well, save the cost；It is used cooperatively using weight and draining plug screw, soft
It, can the dirt removed in pipeline rapidly and efficiently using the fluid injection portion and scale removal portion on cleaning device after the completion of pipe is laid with.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is laying apparatus structural schematic diagram of the invention.
Fig. 3 is cleaning device structural schematic diagram of the invention.
Fig. 4 is partial structural diagram of the invention.
Fig. 5 is water distribution structure schematic diagram of the invention.
Figure label explanation: 1, crane, 111, hanger, 112, pulley, 113, indicator light, 114, suspension hook, 2, radio and tape player, 3,
Hose, 31, joint flange, 32, terminal flange, 4, fixture, 41, clamping plate, the 42, second lifting lug, 5, deep well, 51, wellhead flange,
6, water pump, 7, connecting hook, 8, shell, 9, scale removal portion, 10, cleaning head, 11, controller, 12, image collecting device, 13, external seal
Ring, 14, piston rod, 15, rotary shaft, 16, steel pipe, 17, weight, 18, draining plug screw, 19, support backing plate, 20, through-hole, 21, note
Liquid pipe, 22, ring flange.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Referring to figs. 1 to shown in Fig. 5, a kind of vertical the water intaking flexible pipe of deep well of the invention be laid with and maintenance construction equipment one
Embodiment, including laying apparatus hose 3 are arranged in the draining plug screw 18 between hose 3 and water pump 6 and are used in combination into hose 3
In the cleaning device of triggering draining plug screw 18,3 one end of hose is provided with joint flange 31, and joint flange 31 is connected with water pump 6
It connects, hose 3 is provided with draining plug screw 18 in the position close to joint flange 31, and cleaning device is arranged in hose 3, cleaning device
Including shell 8, liquid injection pipe 21 is provided in shell 8, liquid injection pipe 21 is connected by connecting tube with topping-up pump, and the one of cleaning device
Side is provided with piston rod 14, and support backing plate 19 is provided on piston rod 14, supports and is provided with through-hole 20, liquid injection pipe 21 on backing plate 19
On be provided with cleaning head 10, cleaning head 10 passes through through-hole 20 and is fixed on support backing plate 19, and liquid injection pipe 21 passes through connecting tube and note
Liquid pump is connected, and the position for there is difficult scale removal object to pipeline carries out fluid injection, realizes orientation fluid injection, high-effective and labour-saving, shell 8
Bottom is provided with rotary shaft 15, and rotary shaft 15 is arranged with ring flange 22, and the lower surface of ring flange 22 is set far from the position in the center of circle
It is equipped at least four pieces of scale removal portions 9, scale removal portion 9 to be uniformly arranged along the excircle of ring flange 22, at least 4 pieces of scale removal portions 9 ensure that
The scale removal effect of device, scale removal portion 9 have the outer edge contacted with hoseline, can also more efficiently strike off on tube wall
Dirt, ring flange center are provided with weight 17, are vertically tapped using weight 17, and draining is discharged after draining plug screw 18 is knocked off
Water in hose, then again cleans pipeline；Laying apparatus includes crane 1, and hanger 111 and folding and unfolding are provided on crane 1
Machine 2, radio and tape player 2 are used for retracting hose 3, and suspension hook 114 is provided on hanger 111, and suspension hook 114 is used for stone tongs 4 or water pump
6, one end of hose is connect with water pump 6, and suspension hook 114 controls hose and is put into deep well 5, and there are two fixture 4, folders for setting on hose 3
The length of tool 4 is greater than the width of deep well 5, so fixture 4 can be stuck in the well head of deep well, carries out segmented and transfers hose 3,
Water pump and hose junction are provided with lifting lug 7, and setting only has safety rope on lifting lug 7, and suspension hook 114 slings lifting lug 7 by safety rope,
Water pump 6 can be put into deep well.
The workflow of laying apparatus is: crane is marched into the arena first, and fixed crane is being gone out from 10 meters of deep well import or so, is being received
Machine 2 is put for retracting hose, opens 2 extraction section hose 3 of radio and tape player, one end of hose 3 is connect with water pump, and junction is provided with
Lifting lug 7, safety rope is connect with the first lifting lug 7 at this time, is placed in well head waiting and is gone into the well；Radio and tape player 2 is controlled, at hose is 10 meters long
Left and right stationary fixture slings fixture 4 with crane, lifts water pump 7, is directed at well head, slow G.I.H, due to the length of fixture 4
Greater than the width of deep well, so fixture 4 can be stuck on the well head of deep well 5, the hanging ring on crane 1 is removed at this time, it is subsequent
Second fixture 4 is fixed in the position for continuing the left and right at hose 3 is from 10 meters of deep well, and crane slings second fixture 4, folding and unfolding at this time
Machine puts pipe, and the fixture of well head is currently in until that can lift, and is dismantled at this time positioned at the fixture of well head, 1 lower section pipeline of crane until
Second fixture 4 is stuck at well head；The above operation is repeated, is transferred in deep well until hose 3 is whole, later fixed safety
Rope.
The workflow of cleaning device is: after the completion of pipeline is laid with, there may be part water in hose 3, first by device 3
It slowly is put into hoseline, is vertically tapped using the weight 17 of cleaning device bottom end, is knocked off until draining plug screw 18, this
When hose 3 in water be discharged, later using controller control rotary shaft 15 rotate, drive the ring flange 22 of bottom so that dress
At least 4 pieces of scale removal portions 8 in bottom set portion persistently rotate, so that it may the dirt tied on hose tube wall be wiped off in all directions, using outer
The image collecting device 12 on 2 top of shell can accurately find the more position of pipe scale, again using controller to device into
Row fine tuning, the through-hole 20 where making liquid injection pipe 21 are directed at the more position of dirt, and cleaning head 10 carries out fluid injection to damage location, i.e.,
Injecting chemicals enhances scale removal effect, and after the completion of fluid injection, when by device pull-up from bottom to up, the scale removal portion of bottom of device is again
It can continue to rotate, dirt in pipe is cleared up again.
Fixture 4 is that there are two clamping plates 41 to form, and clamping plate 41 is equal in magnitude, and two clamping plates are fixed by screw, is conducive to
Staff's installation is dismantled, and is provided with the second lifting lug on one of clamping plate 41, is sling folder by rope using suspension hook 114
Tool 4.
3 one end of hose is provided with joint flange 31, and joint flange 31 is connected with water pump 6 by screw, and fastening structure is simultaneously
And staff is facilitated to dismantle.
Hose 3 is provided with terminal flange 32 far from one end of water pump 6, is additionally provided with wellhead flange on the well head of deep well 5
51, terminal flange 32 is used cooperatively with wellhead flange 51, is attached by screw, after hose 3 is completely disposed at deep well
Fixed terminal flange 32, fulfils assignment.
It is provided with indicator light on crane, can show the working condition of crane at this time, prevent irrelevant personnel from entering crane
Working range lead to no wound, hanger 111 is scalable, and one end of hanger 1 is provided with pulley 112, and pulley 112 is for controlling suspension hook
114 move up and down placement hose 3, and working range is big, applied widely.
Connecting hook 7 is provided between suspension hook 114 and fixture 4,7 one end of connecting hook is arranged on suspension hook, and the other end is for hooking
Firmly fixture 4, connecting hook 4 replace suspension hook 114 for catching on fixture 4, can reduce the abrasion of suspension hook 114, and connecting hook 4 is easy to
Replacement, it is at low cost.
Controller 11 is provided at the top of shell 8, controller 11 is connect with ground instrument, and what staff can be convenient passes through
Ground instrument carrys out control device, and image collecting device 12 is additionally provided on shell 8, and image collecting device 12 can be set in shell
8 top, side and bottom end facilitates controllers to observe pipeline inside information condition, is preferably oriented release chemical agent.
It is provided with outer seal ring 13 on support backing plate 19, the outside of cleaning head 10 is arranged in outer seal ring 13, using sealing
More chemical agent can be allowed to be devoted to fixed position, other positions will not be sprinkled upon.
Be provided with steel pipe 16 at the top of shell 8, one end of steel pipe 16 is provided with interconnecting piece, interconnecting piece and electric block lift or
Person connects the next section of steel pipe, and the next section of steel pipe and electric block lift, and can increase the working depth of device, work
Depth is up to hundred meters.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of vertical the water intaking flexible pipe of deep well is laid with and maintenance construction equipment, which is characterized in that including laying apparatus and hose,
Draining plug screw between hose and water pump is set and enters hose and the cleaning device for triggering draining plug screw, it is described clear
Cleaning device includes shell, and liquid injection pipe is provided in the shell, and the side of the cleaning device is provided with piston rod, the piston
It is provided with support backing plate on bar, is provided with through-hole on the support backing plate, cleaning head, the cleaning is provided on the liquid injection pipe
Head passes through the through-hole and is fixed on the support backing plate；The outer casing bottom is provided with rotary shaft, is arranged in the rotary shaft
There is ring flange, the lower surface of the ring flange is evenly arranged at least four pieces of scale removal portions, the scale removal portion close to the position on disk side
It is uniformly distributed along the excircle of the ring flange, the scale removal portion is provided with the outer edge contacted with hose, the ring flange
It is provided centrally with weight；The laying apparatus includes crane, and hanger and radio and tape player are provided on the crane, and the radio and tape player is used
In being provided with suspension hook on retracting hose, the hanger, there are two fixtures, the suspension hook to be hung by connecting rope for setting on the hose
It plays the fixture and the hose is put into deep well, the fixture length is greater than deep well width, the water pump and the hose
Junction is provided with the first lifting lug.
2. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that the folder
Tool is made of two clamping plates, is fixed between two clamping plates by screw, is provided with second on one of them described clamping plate and hangs
Ear, the structure of second lifting lug are semicircle.
3. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that described soft
Pipe one end is provided with joint flange, and the joint flange is connected with the water pump by screw.
4. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that described soft
Manage and one end of water pump be provided with terminal flange, be provided with wellhead flange on the deep well, the terminal flange with it is described
Wellhead flange is attached by screw.
5. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that described to hang
Frame is scalable, and described hanger one end is provided with pulley.
6. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that described to hang
Connecting hook is provided between hook and the fixture.
7. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that described outer
It is provided with controller at the top of shell, the controller is connect with ground instrument, is provided with image collecting device on the shell.
8. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that the branch
Outer seal ring is provided on stake pad plate.
9. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that described outer
Steel pipe is provided at the top of shell, described steel pipe one end is provided with interconnecting piece, and interconnecting piece lifts or connect next section with electric block
The steel pipe, the next section of steel pipe and electric block lift.
10. the vertical the water intaking flexible pipe of deep well as described in claim 1 is laid with and maintenance construction equipment, which is characterized in that including
A kind of laying method, laying method is the following steps are included: water pump and joint flange are connected with by (1), and are hung with first
Ear fixes two safety ropes, is placed in well head waiting and goes into the well；(2) radio and tape player is controlled, radio and tape player cooperates crane common operational,
In long 10 meters or so the place's stationary fixtures of hose；(3) fixture is sling with crane, lifts water pump, be directed at well head, slow G.I.H；
(4) fixture is snapped at well head, and hoist lifting hook is removed；(5) method of (2) is used to continue fixed radio and tape player, radio and tape player is matched
Crane common operational is closed, fixes second fixture at long 10 meters or so the places of hose；(6) crane slings second fixture, radio and tape player
Pipe is put, until the fixture at well head can be lifted；(7) fixture dismantled at well head, crane continue to transfer pipeline to second fixture
It is stuck at well head；(8) it repeats (2)-(7) operation all to transfer in well until hose, terminal flange is connected with wellhead flange,
Fixed safety rope, crane slings wellhead flange, and to good bolt hole, fixation of bolting on, operation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910402673.2A CN110043712A (en) | 2019-05-15 | 2019-05-15 | A kind of vertical the water intaking flexible pipe of deep well is laid with and maintenance construction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910402673.2A CN110043712A (en) | 2019-05-15 | 2019-05-15 | A kind of vertical the water intaking flexible pipe of deep well is laid with and maintenance construction equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110043712A true CN110043712A (en) | 2019-07-23 |
Family
ID=67282000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910402673.2A Pending CN110043712A (en) | 2019-05-15 | 2019-05-15 | A kind of vertical the water intaking flexible pipe of deep well is laid with and maintenance construction equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110043712A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454109A (en) * | 2019-08-12 | 2019-11-15 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Blowout prevention hose hanging apparatus and hanging method in a kind of well control |
| CN111250489A (en) * | 2020-03-27 | 2020-06-09 | 河北德高洁环保科技有限公司 | Explosion-proof type polycrystalline silicon furnace tail gas pipe cleaning machine |
| CN112323941A (en) * | 2020-11-28 | 2021-02-05 | 周宗银 | Equipment is changed in maintenance of town road sewer |
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| KR100790516B1 (en) * | 2007-04-05 | 2008-01-03 | 이순하 | Cleaning system and the method of underground water tube well |
| CN106001019A (en) * | 2016-07-18 | 2016-10-12 | 红塔烟草(集团)有限责任公司 | Scale removing tool and method for deep well pipeline |
| CN205673302U (en) * | 2016-06-06 | 2016-11-09 | 徐家良 | Oil extraction pipeline cleans device |
| CN106440854A (en) * | 2016-10-31 | 2017-02-22 | 安徽马钢输送设备制造有限公司 | Tubular blast furnace soft water evaporative air cooling system and tube scale treatment method thereof |
| CN209977439U (en) * | 2019-05-15 | 2020-01-21 | 江苏爱索新材料科技有限公司 | Deep well perpendicular water intaking hose is laid and is maintained construction equipment |
-
2019
- 2019-05-15 CN CN201910402673.2A patent/CN110043712A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100790516B1 (en) * | 2007-04-05 | 2008-01-03 | 이순하 | Cleaning system and the method of underground water tube well |
| CN205673302U (en) * | 2016-06-06 | 2016-11-09 | 徐家良 | Oil extraction pipeline cleans device |
| CN106001019A (en) * | 2016-07-18 | 2016-10-12 | 红塔烟草(集团)有限责任公司 | Scale removing tool and method for deep well pipeline |
| CN106440854A (en) * | 2016-10-31 | 2017-02-22 | 安徽马钢输送设备制造有限公司 | Tubular blast furnace soft water evaporative air cooling system and tube scale treatment method thereof |
| CN209977439U (en) * | 2019-05-15 | 2020-01-21 | 江苏爱索新材料科技有限公司 | Deep well perpendicular water intaking hose is laid and is maintained construction equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454109A (en) * | 2019-08-12 | 2019-11-15 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Blowout prevention hose hanging apparatus and hanging method in a kind of well control |
| CN111250489A (en) * | 2020-03-27 | 2020-06-09 | 河北德高洁环保科技有限公司 | Explosion-proof type polycrystalline silicon furnace tail gas pipe cleaning machine |
| CN112323941A (en) * | 2020-11-28 | 2021-02-05 | 周宗银 | Equipment is changed in maintenance of town road sewer |
| CN112323941B (en) * | 2020-11-28 | 2021-12-10 | 周宗银 | Equipment is changed in maintenance of town road sewer |
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