CN115090623A - Cleaning device and cleaning method for concrete pouring guide pipe - Google Patents
Cleaning device and cleaning method for concrete pouring guide pipe Download PDFInfo
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- CN115090623A CN115090623A CN202210775468.2A CN202210775468A CN115090623A CN 115090623 A CN115090623 A CN 115090623A CN 202210775468 A CN202210775468 A CN 202210775468A CN 115090623 A CN115090623 A CN 115090623A
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- pipe
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- pipeline
- guide pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
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Abstract
The application relates to the technical field of concrete construction, and provides a cleaning system and a cleaning method for a guide pipe for pouring concrete. This cleaning system includes: the device comprises pumping equipment, spraying equipment, a connecting pipeline and hanging equipment; the hanging device is positioned above the guide pipe in the cleaning process; the water pumping equipment is positioned outside the guide pipe, the spraying equipment is positioned inside the guide pipe, and the water pumping equipment and the spraying equipment are connected through the connecting pipeline; the connecting pipeline comprises a pipe orifice hanging pipeline hung on the upper edge of the guide pipe and an external pipe pipeline hung outside the guide pipe; the pipe orifice hanging pipeline comprises at least one hanging bent pipe, the hanging bent pipe is hung on the upper edge of the guide pipe, and the spraying equipment is arranged at the water outlet end of the pipe orifice hanging pipeline. The application provides a cleaning system can promote the cleaning performance to the pipe.
Description
Technical Field
The application relates to the technical field of concrete construction, in particular to a cleaning device and a cleaning method for a guide pipe for pouring concrete.
Background
To pouring into for the pipe of concrete, its inner wall can remain the concrete after the use, if continue to use the pipe, because the concrete can accumulate at the pipe inner wall, lead to pipe inner wall space more and more narrow, seriously influence the pipe and continue pouring into concrete. In this case, after the catheter is used, it needs to be cleaned.
The conventional cleaning method for the conduit for pouring concrete is to remove the conduit and then lay the conduit on the ground for cleaning, but the concrete on the inner wall of the conduit is difficult to clean thoroughly, which brings trouble to the use of the conduit in the later period.
Disclosure of Invention
The application provides a cleaning device and a cleaning method for a guide pipe for pouring concrete, aiming at the technical problem that concrete is difficult to clean thoroughly caused by a conventional cleaning method for the guide pipe for pouring concrete.
In one aspect, the present application provides a cleaning system for a pipe for pouring concrete, including: the device comprises pumping equipment, spraying equipment, a connecting pipeline and hanging equipment;
the hanging device is positioned above the guide pipe in the cleaning process;
the water pumping equipment is positioned outside the guide pipe, the spraying equipment is positioned inside the guide pipe, and the water pumping equipment is connected with the spraying equipment through the connecting pipeline;
the connecting pipeline comprises a pipe orifice hanging pipeline hung on the upper edge of the guide pipe and an external pipe pipeline hung outside the guide pipe;
the pipe orifice hanging pipeline comprises at least one hanging bent pipe, the hanging bent pipe is hung on the upper edge of the guide pipe, and the spraying equipment is arranged at the water outlet end of the pipe orifice hanging pipeline.
In an alternative embodiment, the nozzle suspension pipe comprises a suspension elbow, and the suspension elbow is an inverted U-shaped elbow.
In an alternative embodiment, the nozzle suspension pipe comprises two vertical suspension elbows and an outer casing straight joint, the two vertical suspension elbows are respectively connected to two ends of the outer casing straight joint and are oppositely arranged, so that the nozzle suspension pipe forms an inverted U-shaped elbow.
In an alternative embodiment, the spraying device comprises a high pressure spray head.
In an alternative embodiment, the type and number of high pressure jets may depend on the bore diameter of the conduit.
In an alternative embodiment, the external pipe conduit comprises at least two sections of plastic water hoses and a hard inner joint of the water pipe arranged between two adjacent sections of plastic water hoses.
On the other hand, the present application further provides a method for cleaning a conduit for pouring concrete, which is based on the cleaning system for a conduit for pouring concrete according to any one of the embodiments of the first aspect, and the method at least includes the following steps:
hanging and fixing the pipe orifice suspension pipeline on the upper edge of the guide pipe, and hoisting the guide pipe for pouring concrete by using the hanging equipment to enable the guide pipe to be vertical to the ground;
starting the water pumping equipment to clean the inner wall of the conduit for pouring concrete;
after the inner wall is cleaned, placing the guide pipe for pouring concrete on the ground by using the hanging equipment, and separating the outer pipeline from the cleaning system of the guide pipe for pouring concrete;
and (4) extending the outer pipeline into the bottom opening of the guide pipe to perform secondary cleaning on the bottom of the guide pipe.
In an alternative embodiment, the step of suspending and securing the spout from the tube hanger to the upper edge of the conduit comprises:
adjusting the extension length of a pipe orifice suspension pipeline to the center of the guide pipe according to the spraying range of the high-pressure spray head;
wherein the spray range comprises at least one of: the aperture of the guide pipe, the type of the high-pressure spray head and the depth position of the high-pressure spray head at the guide pipe.
In an alternative embodiment, the step of activating the water pumping device to clean the inner wall of the conduit for pouring concrete includes:
and controlling the small-amplitude swinging operation of the hanging equipment in the transverse direction of the conduit for pouring concrete while starting the water pumping equipment to clean the inner wall of the conduit for pouring concrete.
In an alternative embodiment, the step of splitting the nozzle suspension pipe and the pipe outside the pipe comprises:
separating at least one section of the plastic water hose and the water pumping device from the hard nipple of the water pipe.
The application provides a cleaning system and cleaning method of pipe for pouring concrete, its beneficial effect is:
based on the washing scheme of pouring into pipe for concrete that this application provided, can be with the form adjustment of pipe when once wasing for perpendicular to ground to utilize and hang the return bend and hang the top edge at the pipe with the equipment that sprays that extends to in the pipe, make when wasing the pipe, the adhesion is acted on down at the concrete of pipe inner wall when gravity and rivers, breaks away from the pipe inner wall easily, need not the manual work and overturn the pipe in the cleaning process, thereby be favorable to simplifying the cleaning operation to the pipe.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice.
Drawings
The above and/or additional aspects and advantages will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram illustrating a cleaning system for a concrete pouring duct according to an embodiment of the present disclosure;
FIG. 2 is an enlarged view of the embodiment of FIG. 1 of the present application showing a suspended piping structure;
FIG. 3 is a schematic illustration of a cleaning system for concrete pouring ducts in a lying position relative to the ducts according to an embodiment of the present application;
fig. 4 is a schematic flow chart illustrating a method for cleaning a concrete pouring duct according to an embodiment of the present application.
Detailed Description
The present application is further described with reference to the following figures and illustrative embodiments, wherein like reference numerals are used to refer to like parts throughout. In addition, if a detailed description of the known art is not necessary to show the features of the present application, it is omitted.
To pouring conventional cleaning means of pipe 1 for the concrete, be difficult to the technical problem of the concrete of rinse thoroughly inner wall, this application provides a belt cleaning device of pipe 1 for the pouring concrete.
For the sake of clarity, the following description will refer to the "concrete pouring duct" simply as "duct", the "cleaning device for concrete pouring duct" simply as "cleaning device", and the "cleaning method for concrete pouring duct" simply as "cleaning method".
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a cleaning system for a concrete pouring duct according to an embodiment of the present application in relation to the duct.
The cleaning device for the concrete pouring guide pipe 1 is fixedly connected to the guide pipe 1. Wherein, the water pumping device 10 is arranged outside the conduit 1, the spraying device 20 is arranged inside the conduit 1, and the connecting pipeline 30 is connected between the water pumping device 10 and the spraying device 20. The water pumping device 10 supplies water to the spraying device 20 through the connecting pipe 30, so that the spraying device 20 positioned in the conduit 1 cleans the inner wall of the conduit 1.
During cleaning, a hanging device (not shown) is placed above the pipe 1, and the pipe 1 is lifted by the rope 40 so that the pipe 1 is perpendicular to the ground.
Referring to fig. 2, fig. 2 is an enlarged structural view of a pipe orifice suspension pipe provided in the embodiment of fig. 1 of the present application.
In this embodiment, the connecting pipe 30 includes a nozzle suspension pipe 31 and an outside pipe 32, which are connected to each other. The nozzle hanging pipe 31 is hung on the upper edge of the conduit 1, the outer pipe 32 is connected between the nozzle hanging pipe 31 and the water pumping device 10, and the outer pipe 32 is hung outside the conduit 1 when the conduit 1 is vertical to the ground.
The spout hanger conduit 31 includes at least one hanger elbow 310. The nozzle hanging elbow 310 is used to hang the entire connecting duct 30 from the upper edge of the conduit 1. The outlet end of the pipe orifice hanging elbow 310 is connected with the spraying equipment 20, and the other end is communicated with the pipe outside 32.
Based on the cleaning system of pipe for the poured concrete that this application provided, can be with the form adjustment of pipe 1 when once wasing for perpendicular to ground, and utilize and hang the return bend 310 and hang the upper edge at pipe 1 with the spray set 20 who extends to in pipe 1, make when wasing pipe 1, the adhesion is under the concrete of pipe 1 inner wall is acted on in gravity and rivers, break away from pipe 1 inner wall easily, need not the manual work and overturn pipe 1 in the cleaning process, thereby be favorable to simplifying the cleaning operation to pipe 1.
In the above embodiment, when the nozzle hanging pipe 31 includes a hanging elbow 310, the hanging elbow 310 is an inverted U-shaped elbow. During cleaning of the conduit 1, the hang-off bend 310 snaps back over the upper edge of the conduit 1. The hang-off elbow 310 communicates with the external pipe 32 at one end and is connected to the spray apparatus 20 at the other end.
In another embodiment, the nozzle hanging pipe 31 may also include two vertically hanging bent pipes 310 and an outer casing straight joint 312, the outer casing straight joint 312 is respectively connected with the two vertically hanging bent pipes 310, the two vertically hanging bent pipes 310 are oppositely arranged, so that the nozzle hanging pipe 31 forms a U-shaped bent pipe and is buckled upside down on the upper edge of the conduit 1. The outer sleeve straight joint 312 is directly fixed to the edge of the upper edge of the pipe 1 during the washing of the pipe 1.
The extension of the hang off bend 310 to the center of the conduit 1 for both embodiments described above depends on the size of the conduit 1 and the type of spray equipment 20.
The spraying apparatus 20 provided for the above embodiment includes a high pressure nozzle capable of spraying water with impact force to the inner wall of the guide duct 1 around the high pressure nozzle, so that the adhered concrete can be more easily separated from the inner wall of the guide duct 1, and the purpose of cleaning the inner wall of the guide duct 1 can be easily achieved.
Further, the type and number of the high pressure nozzles depend on the bore diameter of the conduit. Specifically, the high-pressure spray heads can be side spray heads or lower spray heads, and the spraying ranges of different types of spray heads are different. If the high-pressure spray head is used for side spraying, only one side of the spray head can be sprayed, but relatively speaking, the spraying impact force is stronger, and the spraying range is relatively larger. If the aperture of pipe 1 is great, this equipment 20 that sprays can spout including two sides that lean against each other and set up to can enough be suitable for heavy-calibre pipe 1, make great impact force to pipe 1 inner wall moreover, thereby guarantee the cleaning performance to pipe 1 inner wall.
If the high-pressure spray nozzle sprays downwards, the water outlet direction of the high-pressure spray nozzle is downward, and the spraying range is the inner wall of the conduit 1 below the radial plane of the upper edge of the conduit 1 where the high-pressure spray nozzle is located.
If the conduit 1 is of a relatively long length, the orifice suspension conduit 31 may be provided to include a plurality of vertically suspended elbows 310 and an outer casing straight joint 312 having a plurality of joints, each joint communicating with a vertically suspended elbow 310 extending into the upper edge of the conduit 1. According to the design of sectional spraying of the guide pipe 1, the spraying equipment 20 connected with each vertical suspension bent pipe 310 extends to the depth of the corresponding guide pipe 1, and the corresponding high-pressure spray head is selected according to the distance relation between the spraying equipment 20 and the inner wall of the guide pipe 1.
In the above embodiment, the external pipe 32 comprises at least two sections of plastic hoses 321, and a hard inner joint 322 is disposed between the two connected sections of plastic hoses 321. The hard inner joint 322 of the water pipe is used for connecting the plastic water hoses 321 at both ends of the device, and enables the two connected plastic water hoses 321 to be easily disassembled, so that the two plastic water hoses 321 connected with the hard inner joint 322 of the water pipe can be combined or disassembled according to different operations of a cleaning process, thereby further improving the applicability of the cleaning system.
Referring to fig. 1 and 3-4, fig. 3 is a schematic diagram illustrating a relative position relationship between a cleaning system for a conduit for pouring concrete and the conduit in a lying state according to an embodiment of the present application, and fig. 4 is a schematic flowchart illustrating a cleaning method for the conduit 1 for pouring concrete according to an embodiment of the present application.
On the basis of the cleaning system for the guide pipe for pouring concrete provided in all the embodiments, the present application also provides a cleaning method for the guide pipe 1 for pouring concrete.
The cleaning method at least comprises the following steps:
s110, hanging and fixing the pipe orifice hanging pipeline 31 on the upper edge of the guide pipe 1, and hanging the guide pipe 1 for pouring concrete by using the hanging equipment to enable the guide pipe to be vertical to the ground;
s120, starting the water pumping equipment 10 to clean the inner wall of the conduit 1 for pouring concrete;
s130, after the inner wall is cleaned, placing the guide pipe 1 for pouring concrete on the ground by using the hanging equipment, and separating the outer pipe 32 from a cleaning system of the guide pipe for pouring concrete;
and S140, extending the outer pipeline 32 into the bottom opening of the guide pipe 1, and carrying out secondary cleaning on the bottom of the guide pipe 1.
In steps S110 to S140, the nozzle hanging pipe 31 is hung and fixed to the upper edge of the guide pipe 1, and the state of the entire guide pipe 1 is adjusted by using a hanging device until the entire guide pipe 1 is perpendicular to the ground.
In the operation step of suspending and fixing the pipe orifice suspension pipe 31 on the upper edge of the conduit 1, in this embodiment, the extension length of the pipe orifice suspension pipe 31 to the center of the conduit 1 can be adjusted according to at least one index of the aperture of the conduit 1 to be cleaned, the type of the spraying device 20, and the depth position of the high-pressure nozzle in the conduit, so that the high-pressure nozzle can cover the whole aperture range of the conduit 1, and the water flow can reach the whole inner wall range of the conduit 1.
When the conduit 1 is kept in a state of being vertical to the ground, the water pumping device 10 is started, so that water flow reaches the pipe orifice hanging pipeline 31 along the pipe outside pipeline 32 and then reaches the spraying device 20 from the pipe orifice hanging pipeline 31, the water flow can be sprayed to the inner wall of the conduit 1 from the spraying device 20 and flows to the other end of the conduit 1 from top to bottom, concrete is taken away during the flushing of the water flow, and the purpose of cleaning the inner wall of the conduit 1 is achieved.
After the inner wall of the conduit 1 is automatically cleaned, and the inner wall of the conduit 1, especially the concrete adhered to the inner wall from the top to the inner wall near the bottom, is basically washed clean, the conduit 1 is placed on the ground by using the hanging device again, and in this embodiment, the conduit 1 is laid on the ground. The external pipe 32 is separated from the whole cleaning system, and the water pumping device 10 can only communicate with the external pipe 32 connected with the external pipe, and the water pumped by the water pumping device 10 flows out through the external pipe 32. The external pipe 32 is extended into the bottom opening of the conduit 1 and the outflow water is sprayed onto the inner wall of the conduit 1 where the concrete is adhered. The bottom opening of the conduit 1 is the upper edge of the conduit 1 at the bottom of the conduit 1 during the vertical cleaning of the conduit 1 prior to the cleaning.
Based on the cleaning method of the guide pipe 1 for pouring concrete provided by the application, the cleaning of the guide pipe 1 is divided into different steps which are respectively a first stage: vertical cleaning, and a second stage: lying down for cleaning. Aiming at different stages, the placing state of the guide pipe 1 is correspondingly adjusted, and the cleaning of the guide pipe 1 can not only utilize the flowing of water flow to clean concrete, but also add the function of gravity, so that the concrete added with the water flow gravity can be more easily fallen off; and when carrying out secondary cleaning to pipe 1 end mouth, carry out corresponding deformation to belt cleaning device to be more suitable for and rinse the pipe 1 that is in the state of lying, thereby reach with faster efficiency to the comprehensive clear technological effect of pipe 1.
In the first-stage cleaning process, namely, in the process of vertically cleaning the conduit 1, specifically, the inner wall of the conduit 1 for pouring concrete is cleaned by starting the water pumping device 10, and simultaneously, the small-amplitude swinging operation of the hanging device in the transverse direction of the conduit 1 is also controlled. The small-amplitude swinging operation can be realized by flapping with a lighter force by utilizing a flapping device, so that the catheter 1 can sway left and right in a small amplitude; alternatively, the suspension arm is controlled to perform a small-amplitude circling while the suspension apparatus is towing the guide pipe 1, so that the guide pipe 1 is also controlled to perform a small-amplitude circling swing vertically to the ground in situ in a state where the suspended guide pipe 1 is vertical to the ground.
In this embodiment, the concrete adhered to the inner wall of the conduit 1 can be washed away by gravity and water flow, and can also be acted by the concrete due to the swing of the conduit 1, so that the concrete can be separated from the inner wall of the conduit 1 more easily, and the technical effect of efficient cleaning can be achieved.
In the second stage of secondary cleaning, namely the process of lying cleaning, at least one section of plastic water hose 321 and the pumping equipment 10 are separated from the hard inner joint 322 of the water pipe, and the plastic water hose 321 communicated with the pumping equipment 10 is utilized to directly spray the bottom opening of the conduit 1, so that the residual concrete adhered to the inner wall of the conduit 1 can be separated from the inner wall of the conduit 1, and the inner wall of the conduit 1 can be completely cleaned.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A cleaning system for a conduit for pouring concrete, comprising: the device comprises pumping equipment, spraying equipment, a connecting pipeline and hanging equipment;
the hanging device is positioned above the guide pipe in the cleaning process;
the water pumping equipment is positioned outside the guide pipe, the spraying equipment is positioned inside the guide pipe, and the water pumping equipment and the spraying equipment are connected through the connecting pipeline;
the connecting pipeline comprises a pipe orifice hanging pipeline hung on the upper edge of the guide pipe and an external pipe pipeline hung outside the guide pipe;
the pipe orifice hanging pipeline comprises at least one hanging bent pipe, the hanging bent pipe is hung on the upper edge of the guide pipe, and the spraying equipment is arranged at the water outlet end of the pipe orifice hanging pipeline.
2. A cleaning system for a guide tube for pouring concrete, according to claim 1,
the pipe orifice suspension pipeline comprises a suspension elbow, and the suspension elbow is an inverted U-shaped elbow.
3. A cleaning system for a guide tube for pouring concrete, according to claim 1,
the pipe orifice hanging pipeline comprises two vertical hanging bent pipes and an outer sleeve straight joint, wherein the two vertical hanging bent pipes are respectively connected to two ends of the outer sleeve straight joint and are oppositely arranged, so that the pipe orifice hanging pipeline forms an inverted U-shaped bent pipe.
4. A cleaning system for a guide tube for pouring concrete, according to claim 1,
the spraying equipment comprises a high-pressure spray head.
5. A cleaning system for a guide tube for pouring concrete, according to claim 4,
the type and number of the high pressure jets depends on the bore diameter of the conduit.
6. A cleaning system for a guide tube for pouring concrete, according to claim 1,
the external pipe pipeline comprises at least two sections of plastic soft water pipes and a hard inner joint of the water pipe arranged between the two adjacent sections of plastic soft water pipes.
7. A method for cleaning a conduit for cast-in-place concrete, which is based on the cleaning system for a conduit for cast-in-place concrete according to any one of claims 1 to 6, and which comprises at least the steps of:
hanging and fixing the pipe orifice suspension pipeline on the upper edge of the guide pipe, and hoisting the guide pipe for pouring concrete by using the hanging equipment to enable the guide pipe to be vertical to the ground;
starting the water pumping equipment to clean the inner wall of the conduit for pouring concrete;
after the inner wall is cleaned, the pipe for pouring concrete is placed on the ground by using the hanging equipment, and the outer pipe is separated from the cleaning system of the pipe for pouring concrete;
and (4) extending the outer pipeline into the bottom opening of the guide pipe to perform secondary cleaning on the bottom of the guide pipe.
8. A method of cleaning a pipe for casting concrete according to claim 7,
the step of suspending and securing the spout hanger tube to the upper edge of the conduit includes:
adjusting the extension length of the pipe orifice suspension pipeline to the center of the guide pipe according to the spraying range of the high-pressure spray head;
wherein the spray range comprises at least one of: the aperture of the guide pipe, the type of the high-pressure spray head and the depth position of the high-pressure spray head at the guide pipe.
9. A method of cleaning a pipe for casting concrete according to claim 7,
the step of starting the water pumping equipment to clean the inner wall of the conduit for pouring concrete comprises the following steps:
and controlling the small-amplitude swinging operation of the hanging equipment in the transverse direction of the conduit for pouring concrete while starting the water pumping equipment to clean the inner wall of the conduit for pouring concrete.
10. A method of cleaning a pipe for casting concrete according to claim 7,
the step of splitting the pipe orifice suspension pipeline and the pipe outside pipeline comprises the following steps:
separating at least one section of the plastic water hose and the water pumping device from the hard nipple of the water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210775468.2A CN115090623A (en) | 2022-07-01 | 2022-07-01 | Cleaning device and cleaning method for concrete pouring guide pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210775468.2A CN115090623A (en) | 2022-07-01 | 2022-07-01 | Cleaning device and cleaning method for concrete pouring guide pipe |
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| Publication Number | Publication Date |
|---|---|
| CN115090623A true CN115090623A (en) | 2022-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210775468.2A Pending CN115090623A (en) | 2022-07-01 | 2022-07-01 | Cleaning device and cleaning method for concrete pouring guide pipe |
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| CN (1) | CN115090623A (en) |
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| CN112171874A (en) * | 2020-10-26 | 2021-01-05 | 中交第三航务工程局有限公司 | Assembled spray curing device for tall concrete member |
| CN112620260A (en) * | 2020-12-05 | 2021-04-09 | 中铁十九局集团第一工程有限公司 | Backwashing method for concrete pipeline of spraying and mixing system |
| CN213944206U (en) * | 2020-10-10 | 2021-08-13 | 中国水利水电第十四工程局有限公司 | Spray pipe cleaning device of concrete spraying vehicle |
| CN215107514U (en) * | 2021-04-25 | 2021-12-10 | 贾雯耀 | Civil engineering concrete placement device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201291511Y (en) * | 2008-11-25 | 2009-08-19 | 三一重工股份有限公司 | Longitudinal tube for cleaning apparatus of stirring machine, cleaning apparatus and concrete mixer |
| CN201496221U (en) * | 2009-09-14 | 2010-06-02 | 中国建筑第四工程局有限公司 | Waterless cleaning device for concrete conveying pump pipe |
| CN202667204U (en) * | 2012-06-27 | 2013-01-16 | 中国建筑第八工程局有限公司 | Cleaning device for concrete-pumping pump tube of high-rise |
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| CN213944206U (en) * | 2020-10-10 | 2021-08-13 | 中国水利水电第十四工程局有限公司 | Spray pipe cleaning device of concrete spraying vehicle |
| CN112171874A (en) * | 2020-10-26 | 2021-01-05 | 中交第三航务工程局有限公司 | Assembled spray curing device for tall concrete member |
| CN112620260A (en) * | 2020-12-05 | 2021-04-09 | 中铁十九局集团第一工程有限公司 | Backwashing method for concrete pipeline of spraying and mixing system |
| CN215107514U (en) * | 2021-04-25 | 2021-12-10 | 贾雯耀 | Civil engineering concrete placement device |
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