CN109334018A - A kind of preparation method for the injection molding inspection shaft facilitating entrance - Google Patents
A kind of preparation method for the injection molding inspection shaft facilitating entrance Download PDFInfo
- Publication number
- CN109334018A CN109334018A CN201811188875.3A CN201811188875A CN109334018A CN 109334018 A CN109334018 A CN 109334018A CN 201811188875 A CN201811188875 A CN 201811188875A CN 109334018 A CN109334018 A CN 109334018A
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- China
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- weight
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- inspection shaft
- parts
- injection molding
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
- E03F5/024—Manhole shafts or other inspection chambers; Snow-filling openings; accessories made of plastic material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of preparation methods of injection molding inspection shaft for facilitating entrance, are related to plastic products technology field, include the following steps, injection molding is poured into injection molding machine after mixing raw material, stand-by after being cooled to room temperature using mold injection at inspection shaft main body；Screw thread is carved, carves thread groove in the inner wall of inspection shaft main body, the screw pitch of thread groove is 5-10cm；Lifting device is installed, the bottom of spring and lifter plate is welded, is then fixed the bottom that spring pedestal is put into injection molding inspection shaft, lifter plate is fit into thread groove；Add buffer layer；Coating sprays water-repellent paint in the outside of shock absorbing foam plate, warehouse preservation is put into after solidification.This facilitates the preparation method of the injection molding inspection shaft of entrance, facilitates operator to enter inside inspection shaft and constructs, and can be avoided injection molding inspection shaft and is easy the problem of being damaged by the collision of exterior vibration and rubble, can increase the waterproofness of injection molding inspection shaft.
Description
Technical field
The present invention relates to plastic products technology field, specially a kind of preparation method for the injection molding inspection shaft for facilitating entrance.
Background technique
Inspection shaft is used in buried plastics pipe road in one residential (residential area, public building area, plant area etc.) range
Outer diameter is not more than 6m no more than 800mm, the depth of burying, is generally located in drainage pipeline intersection, turning, caliber or the gradient and changes
Place, at drop etc., for the ease of inspect periodically, clean and dredge or the plastics integrated injection molding of down-hole operation inspection form or
It is brick at well shape structures, plastics integrated injection molding inspection shaft refers to the main well seating portion for constituting inspection shaft using disposable note
It is moulded into type, pit shaft socket uses 360 degree of ring-like carrying platforms, and well bore and well seat bottom use netted reinforcing rib, and each bell and spigot is adopted
With ring-like reinforcing rib design, starting well seat, straight-through well seat, one eighth bend well seat, three driftings are had according to adapter tube number and angle difference
Seat, four drifting seats etc., in order to adapt to various drainage conditions, plastic inspection well is configured with reducer union, confluence connector, pit shaft simultaneously
The matched plastics integrated injection molding accessory such as polylinker, to ensure the smoothness and leakproofness of entire drainage system.But
Existing injection molding inspection shaft is inconvenient to enter inside well, while being easy to be damaged by the collision of exterior vibration and rubble.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of preparation method of injection molding inspection shaft for facilitating entrance, solutions
Existing injection molding inspection shaft of having determined is inconvenient to enter inside well, while being easy to be damaged by the collision of exterior vibration and rubble
Bad problem.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of injection molding inspection facilitating entrance
The preparation method of well, includes the following steps,
(1) injection molding is poured into injection molding machine after mixing raw material, using mold injection at inspection shaft main body, is cooled to
It is stand-by after room temperature；
(2) screw thread is carved, carves thread groove in the inner wall of inspection shaft main body, the screw pitch of thread groove is 5-10cm；
(3) lifting device is installed, the bottom of spring and lifter plate is welded, spring pedestal is then put into injection molding inspection shaft
Bottom fix, lifter plate is fit into thread groove；
(4) buffer layer is added, in the outside even application adhesive of injection molding inspection shaft main body, shock absorbing foam plate is coated on
It is molded the outside of inspection shaft, rolls the surface of shock absorbing foam plate until smooth, is then placed at ventilation opening and air-dries；
(5) coating sprays water-repellent paint in the outside of shock absorbing foam plate, warehouse preservation is put into after solidification.
Preferably, the injection molding inspection shaft is made of following parts by weight of component, and POM is 80-200 parts by weight of component, toughening
Agent is 4-20 parts by weight of component, pulverized limestone is 10-40 parts by weight of component, reinforcing agent is 4-20 parts by weight of component, adhesive 10-
40 parts by weight of component, shock absorbing foam plate are 4-20 parts by weight of component, reinforcing agent 2-10 parts by weight of component, stabilizer 2-10 parts by weight
Component and Masterbatch 10-40 parts by weight of component.
Preferably, the injection molding inspection shaft is made of following parts by weight of component, and POM is 80-120 parts by weight of component, toughening
Agent is 6-10 parts by weight of component, pulverized limestone is 10-20 parts by weight of component, reinforcing agent is 6-10 parts by weight of component, adhesive 10-
20 parts by weight of component, shock absorbing foam plate are 6-10 parts by weight of component, reinforcing agent 2-6 parts by weight of component, stabilizer 2-6 parts by weight group
Divide and Masterbatch 10-20 parts by weight of component.
Preferably, the injection molding inspection shaft is made of following parts by weight of component, and POM is 100 parts by weight of component, toughener is
8 parts by weight of component, pulverized limestone are 15 parts by weight of component, reinforcing agent is that 8 parts by weight of component, adhesive are 15 parts by weight of component, subtract
Shake cystosepiment is 8 parts by weight of component, 15 parts by weight group of 4 parts by weight of component of reinforcing agent, 4 parts by weight of component of stabilizer and Masterbatch
Point.
Preferably, the POM should be preheated before mixing, and preheating temperature is 75-90 DEG C.
Preferably, the injection molding inspection shaft includes inspection shaft main body, and the inner wall of the inspection shaft main body is provided with thread groove,
The inner thread of the thread groove is connected with lifting platform, and the bottom of the lifting platform is welded with spring, and the spring is far from lifting
One end of platform is fixedly connected with sliding block, and the outside of the sliding block is arranged with spring pedestal, the spring bottom far from one end of spring
Seat is slidably connected with sliding block, and the inner wall side of the inspection shaft main body offers longitudinal chute, the top rotation of the lifting platform
It is connected with station, the operation console side is fixedly connected with sliding block, and the sliding block is slidably connected with longitudinal chute.
Preferably, the two sides of the station are fixedly connected to soft iron plate, and the soft iron plate and thread groove slide
Connection.
Preferably, the bottom outer ring of the lifting platform is fixedly connected with cleaning wheel.
Preferably, the outside of the inspection shaft main body is fixedly connected with shock absorbing foam plate by adhesive.
Preferably, waterproof coating is coated on the outside of the shock absorbing foam plate.
(3) beneficial effect
The present invention provides a kind of preparation methods of injection molding inspection shaft for facilitating entrance.Have it is following the utility model has the advantages that
(1), the preparation method of the injection molding inspection shaft for facilitating entrance, is provided with screw thread by the inner wall of inspection shaft main body
Slot, the inner thread of the thread groove are connected with lifting platform, and the bottom of the lifting platform is welded with spring, and the spring is far from liter
One end of drop platform is fixedly connected with sliding block, and the outside of the sliding block is arranged with spring pedestal, the spring far from one end of spring
Pedestal is slidably connected with sliding block, and the inner wall side of the inspection shaft main body offers longitudinal chute, and the top of the lifting platform turns
Dynamic to be connected with station, the operation console side is fixedly connected with sliding block, and the sliding block is slidably connected with sliding slot, needs lower to inspection
At the top of lifting platform, lifting platform drives station along the chute due to the gravity threadingly slot rotation decline at top at station when looking into well
Decline, drops to bottom and completes to the operation inside inspection shaft, and rebound, which pushes lifting platform, after spring is compressed rises, and facilitates behaviour
It enters inside inspection shaft and constructs as personnel.
(2), the preparation method of the injection molding inspection shaft for facilitating entrance, by uniformly being sprayed in the outside of injection molding inspection shaft main body
Adhesive is applied, shock absorbing foam plate is coated on to the outside of injection molding inspection shaft, rolls the surface of shock absorbing foam plate up to smooth, then
It is placed at ventilation opening and air-dries, can be avoided injection molding inspection shaft and be easy to be collided asking of being damaged by exterior vibration and rubble
Topic sprays water-repellent paint in the outside of shock absorbing foam plate, can increase the waterproofness of injection molding inspection shaft.
Detailed description of the invention
Fig. 1 is schematic structural diagram of the device of the invention；
Fig. 2 is spring pedestal structural schematic diagram of the present invention；
Fig. 3 is damping schematic diagram of a layer structure of the present invention.
In figure: 1- inspection shaft main body, 2- thread groove, 3- lifting platform, 4- spring, 5- sliding block, 6- spring pedestal, 7- are longitudinally sliding
Slot, 8- station, 9- sliding block, the soft iron plate of 10-, 11- cleaning wheel, 12- adhesive, 13- shock absorbing foam plate, 14- waterproof coating.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of preparation side for the injection molding inspection shaft facilitating entrance
Method includes the following steps,
(1) injection molding is poured into injection molding machine after mixing raw material, using mold injection at inspection shaft main body, is cooled to
It is stand-by after room temperature；
(2) screw thread is carved, carves thread groove in the inner wall of inspection shaft main body, the screw pitch of thread groove is 5-10cm；
(3) lifting device is installed, the bottom of spring and lifter plate is welded, spring pedestal is then put into injection molding inspection shaft
Bottom fix, lifter plate is fit into thread groove；
(4) buffer layer is added, in the outside even application adhesive of injection molding inspection shaft main body, shock absorbing foam plate is coated on
It is molded the outside of inspection shaft, rolls the surface of shock absorbing foam plate until smooth, is then placed at ventilation opening and air-dries, shock absorbing foam plate
It can be avoided injection molding inspection shaft and be easy the problem of being damaged by the collision of exterior vibration and rubble；
(5) coating sprays water-repellent paint in the outside of shock absorbing foam plate, can increase the waterproofness of injection molding inspection shaft, Gu
Warehouse preservation is put into after change.
Injection molding inspection shaft is made of following parts by weight of component, and POM is 80-200 parts by weight of component, toughener is 4-20 weight
Part component, pulverized limestone are 10-40 parts by weight of component, reinforcing agent is 4-20 parts by weight of component, adhesive is 10-40 parts by weight group
Divide, shock absorbing foam plate is 4-20 parts by weight of component, reinforcing agent 2-10 parts by weight of component, stabilizer 2-10 parts by weight of component and color masterbatch
Grain 10-40 parts by weight of component.
Injection molding inspection shaft is made of following parts by weight of component, and POM is 80-120 parts by weight of component, toughener is 6-10 weight
Part component, pulverized limestone are 10-20 parts by weight of component, reinforcing agent is 6-10 parts by weight of component, adhesive is 10-20 parts by weight group
Divide, shock absorbing foam plate is 6-10 parts by weight of component, reinforcing agent 2-6 parts by weight of component, stabilizer 2-6 parts by weight of component and Masterbatch
10-20 parts by weight of component.
Injection molding inspection shaft is made of following parts by weight of component, and POM is 100 parts by weight of component, toughener is 8 parts by weight groups
Divide, pulverized limestone is 15 parts by weight of component, reinforcing agent is 8 parts by weight of component, adhesive is 15 parts by weight of component, shock absorbing foam plate is
8 parts by weight of component, 15 parts by weight of component of 4 parts by weight of component of reinforcing agent, 4 parts by weight of component of stabilizer and Masterbatch.
POM should be preheated before mixing, and preheating temperature is 75-90 DEG C.
Injection molding inspection shaft includes inspection shaft main body 1, and the inner wall of inspection shaft main body 1 is provided with thread groove 2, thread groove 2 it is interior
Wall is threaded with lifting platform 3, and the bottom of lifting platform 3 is welded with spring 4, and spring 4 is fixedly connected with far from one end of lifting platform 3
The outside of sliding block 5, sliding block 5 is arranged with spring pedestal 6 far from one end of spring 4, and spring pedestal 6 is slidably connected with sliding block 5, checks
The inner wall side of well main body 1 offers longitudinal chute 7, and the top of lifting platform 3 is rotatably connected to station 8, and 8 side of station is solid
Surely it is connected with sliding block 9, sliding block 9 is slidably connected with longitudinal chute 7, and station is in 3 top of lifting platform, lifting when under needing in inspection shaft
Due to the gravity threadingly rotation of slot 2 decline at top, driving station 8, sliding slot 7 declines platform 3 along longitudinal direction, drops to bottom completion
To the operation inside inspection shaft, after spring 4 is compressed, rebound, which pushes lifting platform 3, rises, and operator is facilitated to enter inspection
It constructs inside well.
The two sides of station 8 are fixedly connected to soft iron plate 10, and soft iron plate 10 is slidably connected with thread groove 2.
The bottom outer ring of lifting platform 3 is fixedly connected with cleaning wheel 11.
The outside of inspection shaft main body 1 is fixedly connected with shock absorbing foam plate 13 by adhesive 12.
The outside of shock absorbing foam plate 13 is coated with waterproof coating 14.
It when work, pours into injection molding machine after raw material is mixed, using mold injection at inspection shaft main body 1, is cooled to room temperature
It is stand-by afterwards, thread groove 2 is carved in the inner wall of inspection shaft main body 1, the screw pitch of thread groove 2 is 5-10cm, by spring 4 and lifting platform 3
Bottom welding, then by 4 pedestal of spring be put into injection molding inspection shaft bottom fix, lifting platform 3 is fit into thread groove 2,
It is molded the outside even application adhesive 12 of inspection shaft main body 1, shock absorbing foam plate 13 is coated on to the outside of injection molding inspection shaft, is ground
It presses the surface of shock absorbing foam plate 13 until smooth, is then placed at ventilation opening and air-dries, spraying is anti-in the outside of shock absorbing foam plate 13
Water coating 14 is put into warehouse preservation after solidification.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of preparation method for the injection molding inspection shaft for facilitating entrance, it is characterised in that: include the following steps,
(1) injection molding is poured into injection molding machine after mixing raw material, using mold injection at inspection shaft main body, is cooled to room temperature
It is stand-by afterwards；
(2) screw thread is carved, carves thread groove in the inner wall of inspection shaft main body, the screw pitch of thread groove is 5-10cm；
(3) lifting device is installed, the bottom of spring and lifter plate is welded, then spring pedestal is put into the bottom of injection molding inspection shaft
Portion is fixed, and lifter plate is fit into thread groove；
(4) buffer layer is added, in the outside even application adhesive of injection molding inspection shaft main body, shock absorbing foam plate is coated on injection molding
The surface of shock absorbing foam plate is rolled until smooth in the outside of inspection shaft, is then placed at ventilation opening and air-dries；
(5) coating sprays water-repellent paint in the outside of shock absorbing foam plate, warehouse preservation is put into after solidification.
2. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 1, it is characterised in that: the note
Modeling inspection shaft is made of following parts by weight of component, and POM is 80-200 parts by weight of component, toughener is 4-20 parts by weight of component, stone
Ashes is 10-40 parts by weight of component, reinforcing agent is 4-20 parts by weight of component, adhesive is 10-40 parts by weight of component, shock absorbing foam
Plate is 4-20 parts by weight of component, reinforcing agent 2-10 parts by weight of component, stabilizer 2-10 parts by weight of component and Masterbatch 10-40 weight
Part component.
3. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 1, it is characterised in that: the note
Modeling inspection shaft is made of following parts by weight of component, and POM is 80-120 parts by weight of component, toughener is 6-10 parts by weight of component, stone
Ashes is 10-20 parts by weight of component, reinforcing agent is 6-10 parts by weight of component, adhesive is 10-20 parts by weight of component, shock absorbing foam
Plate is 6-10 parts by weight of component, reinforcing agent 2-6 parts by weight of component, stabilizer 2-6 parts by weight of component and Masterbatch 10-20 parts by weight
Component.
4. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 1, it is characterised in that: the note
Modeling inspection shaft is made of following parts by weight of component, and POM is 100 parts by weight of component, toughener is 8 parts by weight of component, pulverized limestone is
15 parts by weight of component, reinforcing agent are 8 parts by weight of component, adhesive is 15 parts by weight of component, shock absorbing foam plate is 8 parts by weight groups
Divide, 15 parts by weight of component of 4 parts by weight of component of reinforcing agent, 4 parts by weight of component of stabilizer and Masterbatch.
5. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 2, it is characterised in that: described
POM should be preheated before mixing, and preheating temperature is 75-90 DEG C.
6. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 1, it is characterised in that: the note
Moulding inspection shaft includes inspection shaft main body (1), and the inner wall of the inspection shaft main body (1) is provided with thread groove (2), the thread groove
(2) inner thread is connected with lifting platform (3), and the bottom of the lifting platform (3) is welded with spring (4), and the spring (4) is separate
One end of lifting platform (3) is fixedly connected with sliding block (5), and the outside of the sliding block (5) is arranged with spring far from one end of spring (4)
Pedestal (6), the spring pedestal (6) are slidably connected with sliding block (5), and the inner wall side of the inspection shaft main body (1) offers vertical
It to sliding slot (7), is rotatably connected to station (8) at the top of the lifting platform (3), station (8) side is fixedly connected with
Sliding block (9), the sliding block (9) are slidably connected with longitudinal chute (7).
7. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 6, it is characterised in that: the behaviour
The two sides for making platform (8) are fixedly connected to soft iron plate (10), and the soft iron plate (10) is slidably connected with thread groove (2).
8. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 6, it is characterised in that: the liter
The bottom outer ring of drop platform (3) is fixedly connected with cleaning wheel (11).
9. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 6, it is characterised in that: the inspection
The outside for looking into well main body (1) is fixedly connected with shock absorbing foam plate (13) by adhesive (12).
10. a kind of preparation method of injection molding inspection shaft for facilitating entrance according to claim 9, it is characterised in that: described
Waterproof coating (14) are coated on the outside of shock absorbing foam plate (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188875.3A CN109334018B (en) | 2018-10-12 | 2018-10-12 | Preparation method of injection molding inspection well convenient to enter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188875.3A CN109334018B (en) | 2018-10-12 | 2018-10-12 | Preparation method of injection molding inspection well convenient to enter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109334018A true CN109334018A (en) | 2019-02-15 |
| CN109334018B CN109334018B (en) | 2021-06-18 |
Family
ID=65309178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811188875.3A Active CN109334018B (en) | 2018-10-12 | 2018-10-12 | Preparation method of injection molding inspection well convenient to enter |
Country Status (1)
| Country | Link |
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| CN (1) | CN109334018B (en) |
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| JP2005290846A (en) * | 2004-03-31 | 2005-10-20 | Sekisui Chem Co Ltd | Method of renovating manhole inner peripheral surface |
| CN102202858A (en) * | 2008-10-29 | 2011-09-28 | 韦文有限公司 | Method and mould assembly for rotation moulding a pipe part with a spigot end, as well as pipe part obtained therewith |
| CN205259329U (en) * | 2016-01-06 | 2016-05-25 | 东北石油大学 | Water draining inspection well |
| EP3170942A1 (en) * | 2015-10-12 | 2017-05-24 | Fränkische Rohrwerke Gebr. Kirchner GmbH + Co KG | Plastic shaft body |
| CN107023061A (en) * | 2017-04-20 | 2017-08-08 | 广东中科华冉智网科技有限公司 | Assembled plastics municipal drainage inspection shaft and construction method |
| CN107629312A (en) * | 2017-08-23 | 2018-01-26 | 江苏由迎管阀件有限公司 | A kind of base material and preparation method thereof and PPH ventilation shafts |
| CN107780515A (en) * | 2016-08-30 | 2018-03-09 | 安徽万安环境科技股份有限公司 | A kind of used in construction drainage plastic inspection well |
-
2018
- 2018-10-12 CN CN201811188875.3A patent/CN109334018B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005290846A (en) * | 2004-03-31 | 2005-10-20 | Sekisui Chem Co Ltd | Method of renovating manhole inner peripheral surface |
| CN102202858A (en) * | 2008-10-29 | 2011-09-28 | 韦文有限公司 | Method and mould assembly for rotation moulding a pipe part with a spigot end, as well as pipe part obtained therewith |
| EP3170942A1 (en) * | 2015-10-12 | 2017-05-24 | Fränkische Rohrwerke Gebr. Kirchner GmbH + Co KG | Plastic shaft body |
| CN205259329U (en) * | 2016-01-06 | 2016-05-25 | 东北石油大学 | Water draining inspection well |
| CN107780515A (en) * | 2016-08-30 | 2018-03-09 | 安徽万安环境科技股份有限公司 | A kind of used in construction drainage plastic inspection well |
| CN107023061A (en) * | 2017-04-20 | 2017-08-08 | 广东中科华冉智网科技有限公司 | Assembled plastics municipal drainage inspection shaft and construction method |
| CN107629312A (en) * | 2017-08-23 | 2018-01-26 | 江苏由迎管阀件有限公司 | A kind of base material and preparation method thereof and PPH ventilation shafts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109334018B (en) | 2021-06-18 |
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