CN111425678A - Concrete pump pipe for continuous transmission - Google Patents
Concrete pump pipe for continuous transmission Download PDFInfo
- Publication number
- CN111425678A CN111425678A CN202010515349.4A CN202010515349A CN111425678A CN 111425678 A CN111425678 A CN 111425678A CN 202010515349 A CN202010515349 A CN 202010515349A CN 111425678 A CN111425678 A CN 111425678A
- Authority
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- China
- Prior art keywords
- pump pipe
- pump
- concrete
- connecting piece
- continuous transmission
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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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- 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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a concrete pump pipe for continuous transmission, which is characterized in that: the concrete pump comprises pump pipes (1) and a pump pipe connecting piece used for connecting the two pump pipes (1), wherein the two ends of the pump pipe connecting piece are symmetrically designed, the middle part of the pump pipe connecting piece is rotatably connected with stirring blades (2), and the stirring blades (2) drive concrete in one pump pipe (1) to move towards the other pump pipe (1) in the rotating process. The invention provides a concrete pump pipe for continuous transmission, which can improve the transmission efficiency of concrete and avoid the blocking phenomenon of the concrete in the pump pipe.
Description
Technical Field
The invention relates to the field of pump pipes, in particular to a concrete pump pipe for continuous transmission.
Background
The pump pipe has obtained extensive use in the building field, and the pump pipe is along with the appearance of concrete transfer pump and the novel building engineering accessory product that appears simultaneously, and its appearance has improved the efficiency of construction greatly, need change the operation mode that needs in the past with artifical or a crane bucket or a fill into a bucket into quick with the concrete transmission to the place that needs the pouring, makes the efficiency of construction improve nearly hundredfold.
The pipe head of the pump pipe is a specially processed pipe joint and is connected with the pipe body through welding, and the pump pipes are connected through pipe clamps processed through a precision casting process.
In the use process of the pump pipe, the pump pipe is often connected into a long transmission pipeline, and the concrete is easy to coagulate on the inner wall of the pump pipe when moving in the transmission pipeline, so that the transmission efficiency of the concrete is reduced and the transmission pipeline is blocked.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the concrete pump pipe for continuous transmission improves the transmission efficiency of concrete and avoids the blocking phenomenon of the concrete in the pump pipe.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a concrete pump pipe for continuous transmission, includes pump line and the pump line connecting piece that is used for connecting two pump lines, the both ends of pump line connecting piece are the symmetrical design, the middle part of pump line connecting piece rotates and is connected with stirring vane, stirring vane rotates the concrete that in-process drove one pump line and moves in to another pump line.
Compared with the prior art, the invention has the advantages that: two pump lines are connected through the connecting piece that is equipped with stirring vane, can utilize stirring vane to stir the concrete that passes through, avoid the concrete in transmission process, layering phenomenon appears, the upper strata moisture of concrete removes to the lower floor promptly, lead to the upper strata dry, the phenomenon of condensing more easily, thereby avoid the transmission efficiency of concrete to descend and the condition of transmission pipeline shutoff, the drive effect through stirring vane simultaneously, can make the transmission of concrete between the pump line more smooth and easy, the transmission requirement of transmission pump also can be reduced, the transmission pump indicates the mobile power source of concrete in transmission pipeline.
As an improvement of the invention, the pump pipe connecting piece comprises an upper shell and a lower shell, a first sealing channel is arranged at the joint of the upper shell and the lower shell, a sealing strip is arranged on the first sealing channel, the stirring blade can be conveniently installed in the pump pipe connecting piece through the improvement, and the condition of concrete leakage can be avoided through the design of the first sealing channel and the sealing strip.
The invention also provides an improvement, wherein the inner side of the pump pipe connecting piece is provided with a connecting groove for connecting stirring blades, a fixed ring is fixedly connected in the connecting groove, the stirring blades are fixedly connected to the inner side of a rotating ring, the rotating ring is rotatably connected to the inner side of the fixed ring, the purpose of rotating the stirring blades in the pump pipe connecting piece is realized through the improvement, the stirring blades can be prevented from contacting with an upper shell and a lower shell through the design of the fixed ring, because the upper shell and the lower shell are not integrally designed, if the rotating plane of the stirring blades contacts with the upper shell and the lower shell, the rotation clamping stagnation is easy to occur, and through the design of the rotating ring, the rotation of the stirring blades on the fixed ring can be more stable, and if the stirring blades have a plurality of pieces, the integrity of stirring blades can be stronger in the rotating process.
As a further improvement of the invention, a plurality of shifting striations are arranged on the inner wall of the rotating ring, the shifting striations are arranged in parallel with the stirring blades, the cross section of the shifting striations is in a shape with a high middle part and low two ends, the distance from the high point of the shifting striations to the low point of the starting end of rotation is larger than the distance from the high point of the shifting striations to the low point of the tail end of rotation, through the improvement, the stirring blades can not ensure that all concrete is stirred in the rotating process, some concrete which is condensed into small blocks due to insufficient water content can also directly pass through the stirring blades, and through the design of the shifting striations, the concrete which is condensed into small blocks can be prevented from directly passing through the stirring blades, the moisture in the concrete can be fully shifted, particularly the moisture accumulated on the edge of a pipeline, the moisture is fully mixed with the concrete, and the coagulation of the concrete can be prevented, simultaneously, the structure of the pulling lines is small, the concrete transmission efficiency cannot be influenced, the distance from the high point of the pulling lines to the low point of the rotating starting end is larger than the distance from the high point of the pulling lines to the low point of the rotating tail end, the pulling lines can have a good concrete pulling effect, and the condition that the concrete jumps in the transmission process can be avoided.
As a further improvement of the invention, anti-drop flanges for preventing the rotating ring from deviating are arranged on two sides of the fixed ring, and the rotating ring is limited by the improvement, so that the condition that the rotating ring is derailed in the rotating process is avoided, and the stirring effect of the stirring blade is ensured.
As a further improvement of the invention, a driving motor is arranged on the outer side of the pump pipe connecting piece, a rotating gear ring is arranged on the outer side of the rotating ring, the driving motor is connected to the rotating gear ring through a transmission assembly in a transmission manner, and through the improvement, the rotation of the rotating ring is realized, so that the rotation of the stirring blades is realized.
The invention also provides an improvement that a connecting flange is arranged at one end of the pump pipe close to the pump pipe connecting piece, a positioning flange matched with the connecting flange is arranged at one end of the pump pipe connecting piece close to the pump pipe, a second sealing channel is arranged between the connecting flange and the positioning flange, and a sealing strip is arranged on the second sealing channel.
As a further improvement of the present invention, a first connecting protrusion is further disposed at one end of the pump tube close to the pump tube connecting member, a second connecting protrusion is further disposed at one end of the pump tube connecting member close to the pump tube, the first connecting protrusion and the second connecting protrusion are fixedly connected by a connecting buckle, and by the improvement, the fixed connection of the pump tube and the pump tube connecting member is realized.
As a further improvement of the present invention, a first oblique angle is disposed at an end of the first connecting protrusion away from the pump tube connecting member, a second oblique angle is disposed at an end of the second connecting protrusion away from the pump tube, a fixing groove is disposed at an inner ring of the connecting buckle, and guide oblique angles matched with the first oblique angle and the second oblique angle are disposed at two sides of the fixing groove respectively.
The invention also provides an improvement, wherein the connecting buckle comprises a first connecting buckle and a second connecting buckle, one end of the first connecting buckle is hinged with one end of the second connecting buckle, the other ends of the first connecting buckle and the second connecting buckle are respectively provided with a connecting flange, and the two connecting flanges are fixedly connected through a fastener.
Drawings
Fig. 1 is a schematic connection diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the present invention in an exploded configuration.
FIG. 3 is a sectional view of the pump tube and the pump tube connector according to the present invention.
Fig. 4 is a structural schematic view of the lower case of the present invention.
FIG. 5 is a schematic top view of the structure of the rotating ring, the stirring blades and the shifting striations of the present invention.
Fig. 6 is a schematic view of the connecting buckle of the present invention.
Shown in the figure: 1. the pump pipe, 1.1, the flange, 1.2, the first connection is protruding, 1.3, the first bevel angle, 2, stirring vane, 3, the epitheca, 4, the inferior valve, 5, first seal way, 6, the sealing strip, 7, the spread groove, 8, the retainer plate, 8.1, anticreep flange, 9, the circle of rotating, 9.1, pull line, 9.2, rotate the ring gear, 10, driving motor, 10.1, drive assembly, 11, the locating flange, 12, the second seal way, 13, the second connection is protruding, 13.1, the second bevel angle, 14, the connector link, 14.1, the fixed slot, 14.2, the direction bevel angle, 14.3, the first connection buckle, 14.4, the second connection buckle, 15, the bolt.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in fig. 1-3, a concrete pump pipe for continuous transmission comprises a pump pipe 1 and a pump pipe connecting piece for connecting two pump pipes 1, wherein two ends of the pump pipe connecting piece are symmetrically designed, the middle part of the pump pipe connecting piece is rotatably connected with a stirring blade 2, the stirring blade 2 drives concrete in one pump pipe 1 to move to the other pump pipe 1 in the rotating process, as shown in fig. 4, the pump pipe connecting piece comprises an upper shell 3 and a lower shell 4, a first sealing channel 5 is arranged at the joint of the upper shell 3 and the lower shell 4, a sealing strip 6 is arranged on the first sealing channel 5, a connecting groove 7 for connecting the stirring blade 2 is arranged on the inner side of the pump pipe connecting piece, a fixed ring 8 is fixedly connected in the connecting groove 7, the stirring blade 2 is fixedly connected on the inner side of a rotating ring 9, the rotating ring 9 is rotatably connected on the inner side of the fixed ring 8, the both sides of retainer plate 8 are equipped with the anticreep flange 8.1 that is used for preventing to rotate 9 skews of circle, the outside on the pump line connecting piece is equipped with driving motor 10, the outside of rotating 9 circles is equipped with rotates ring gear 9.2, driving motor 10 passes through drive assembly 10.1 transmission connection on rotating ring gear 9.2, and drive assembly 10.1 includes drive gear and reduction gear of the spacing connection of circumference on driving motor 10, and a ring gear and the drive gear meshing of reduction gear, another ring gear of reduction gear pass through a drive gear and rotate ring gear 9.2 meshing, realize under the driven condition of driving motor 10, rotate circle 9 and carry out the pivoted mesh, be equipped with a gear hole that supplies drive assembly 10.1 to pass on epitheca 3.
As shown in fig. 3 and 5, a plurality of shifting striations 9.1 are arranged on the inner wall of the rotating ring 9, the shifting striations 9.1 are arranged in parallel with the stirring blades 2, the cross section of the shifting striations 9.1 is in a shape with a high middle and low two ends, and the distance from the high point of the shifting striations 9.1 to the low point of the rotating starting end is greater than the distance from the high point of the shifting striations 9.1 to the low point of the rotating tail end.
As shown in fig. 2, 3 and 6, a connecting flange 1.1 is arranged at one end of the pump pipe 1 close to the pump pipe connecting piece, a positioning flange 11 matched with the connecting flange 1.1 is arranged at one end of the pump pipe connecting piece close to the pump pipe 1, a second sealing channel 12 is arranged between the connecting flange 1.1 and the positioning flange 11, a sealing strip 6 is arranged on the second sealing channel 12, two channels are arranged on one positioning flange 11 of the second sealing channel 12, a first connecting protrusion 1.2 is further arranged at one end of the pump pipe 1 close to the pump pipe connecting piece, a second connecting protrusion 13 is further arranged at one end of the pump pipe connecting piece close to the pump pipe 1, the first connecting protrusion 1.2 and the second connecting protrusion 13 are fixedly connected through a connecting buckle 14, a first oblique angle 1.3 is arranged at one end of the first connecting protrusion 1.2 far away from the pump pipe connecting piece, a second oblique angle 13.1 is arranged at one end of the second connecting protrusion 13 far away from the pump pipe 1, the inner ring of the connecting buckle 14 is provided with a fixing groove 14.1, two sides of the fixing groove 14.1 are respectively provided with a guide oblique angle 14.2 matched with the first oblique angle 1.3 and the second oblique angle 13.1, the connecting buckle 14 comprises a first connecting buckle 14.3 and a second connecting buckle 14.4, one end of the first connecting buckle 14.3 is hinged with one end of the second connecting buckle 14.4, the other ends of the first connecting buckle 14.3 and the second connecting buckle 14.4 are respectively provided with a connecting block, the two connecting blocks are fixedly connected through a bolt 15 and a nut, one connecting block is provided with a long waist hole, so that the bolt 15 can keep the purpose of connecting the first connecting buckle 14.3 and the second connecting buckle 14.4 in the process of mutually approaching the two connecting blocks, and the two connecting blocks can be mutually approached by screwing the bolt 15 through the nut in the process of mutually approaching the two connecting blocks.
Above-mentioned epitheca 3 is equipped with mounting flange with the junction of inferior valve 4, first seal way 5 is established on mounting flange, still be equipped with three connecting hole on the mounting flange simultaneously, through bolt 15, fasteners such as nut can be fixed epitheca 3 and inferior valve 4, can utilize the connecting hole of locating the center earlier simultaneously, to the installation of epitheca 3 and inferior valve 4 in-process, pass the connecting hole of epitheca 3 locating the center and the corresponding connecting hole of locating the center of inferior valve 4 simultaneously with the location borer, the accuracy of installation of epitheca 3 and inferior valve 4 is guaranteed, and then guarantee the sealed tightness of first seal way 5, avoid earlier simple placing epitheca 3 in the top of inferior valve 4, reach the connection that targets in place of epitheca 3 and inferior valve 4 through the mode of flat moving, this mode makes sealing strip 6 damage easily, be unfavorable for the seal design.
According to the transmission power of the transmission pump and the pipe diameter of the invention, different application data exist, when the transmission pump is used on a construction site, a pump pipe connecting piece can be added between two pump pipes 1 every 10-20 meters, the connection between the pump pipes 1 at the other positions can still be directly connected by using a common pump pipe buckle, the effect of the invention can be fully exerted by the distance, if the distance is less than 10 meters, the effect of the invention is not fully exerted, the installation cost of the pump pipes 1 is increased, if the distance is more than 20 meters, the effect of the invention is reduced, the layering phenomenon of the concrete can occur in the transmission process, and the concrete at the upper layer is easy to coagulate.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.
Claims (10)
1. A concrete pump pipe for continuous transmission is characterized in that: the concrete pump comprises pump pipes (1) and a pump pipe connecting piece used for connecting the two pump pipes (1), wherein the two ends of the pump pipe connecting piece are symmetrically designed, the middle part of the pump pipe connecting piece is rotatably connected with stirring blades (2), and the stirring blades (2) drive concrete in one pump pipe (1) to move towards the other pump pipe (1) in the rotating process.
2. The concrete pump pipe for continuous transmission according to claim 1, wherein: the pump pipe connecting piece comprises an upper shell (3) and a lower shell (4), a first sealing channel (5) is arranged at the joint of the upper shell (3) and the lower shell (4), and a sealing strip (6) is arranged on the first sealing channel (5).
3. The concrete pump pipe for continuous transmission according to claim 2, wherein: the inboard of pump line connecting piece is equipped with spread groove (7) that are used for connecting stirring vane (2), fixedly connected with retainer plate (8) in spread groove (7), stirring vane (2) fixed connection is in the inboard of a rotating ring (9), rotating ring (9) rotate the inboard of connecting at retainer plate (8).
4. The concrete pump pipe for continuous transmission according to claim 3, wherein: be equipped with multichannel pulling pattern (9.1) on the inner wall of circle (9) rotates, pulling pattern (9.1) and stirring vane (2) parallel arrangement, the transversal shape of personally submitting middle height, both ends height of pulling pattern (9.1), the distance of the high point of pulling pattern (9.1) to the low point of pivoted initiating terminal is greater than the distance of the high point of pulling pattern (9.1) to the terminal low point of pivoted.
5. The concrete pump pipe for continuous transmission according to claim 3, wherein: and anti-falling flanges (8.1) for preventing the rotating ring (9) from deviating are arranged on two sides of the fixing ring (8).
6. The concrete pump pipe for continuous transmission according to claim 3, wherein: the outer side of the pump pipe connecting piece is provided with a driving motor (10), the outer side of the rotating ring (9) is provided with a rotating gear ring (9.2), and the driving motor (10) is in transmission connection with the rotating gear ring (9.2) through a transmission assembly (10.1).
7. The concrete pump pipe for continuous transmission according to claim 1, wherein: one end that pump line (1) is close to pump line connecting piece is equipped with flange (1.1), the one end that pump line connecting piece is close to pump line (1) is equipped with flange (11) that agree with mutually with flange (1.1), be equipped with second sealed way (12) between flange (1.1) and flange (11), be equipped with sealing strip (6) on second sealed way (12).
8. The concrete pump pipe for continuous transmission according to claim 1, wherein: one end of the pump pipe (1) close to the pump pipe connecting piece is further provided with a first connecting protrusion (1.2), one end of the pump pipe connecting piece close to the pump pipe (1) is further provided with a second connecting protrusion (13), and the first connecting protrusion (1.2) is fixedly connected with the second connecting protrusion (13) through a connecting buckle (14).
9. The concrete pump pipe for continuous transmission according to claim 8, wherein: one end, far away from the pump pipe connecting piece, of the first connecting protrusion (1.2) is provided with a first oblique angle (1.3), one end, far away from the pump pipe (1), of the second connecting protrusion (13) is provided with a second oblique angle (13.1), the inner ring of the connecting buckle (14) is provided with a fixing groove (14.1), and two sides of the fixing groove (14.1) are respectively provided with a guide oblique angle (14.2) matched with the first oblique angle (1.3) and the second oblique angle (13.1).
10. The concrete pump pipe for continuous transmission according to claim 8, wherein: the connecting buckle (14) comprises a first connecting buckle (14.3) and a second connecting buckle (14.4), one end of the first connecting buckle (14.3) is hinged to one end of the second connecting buckle (14.4), the other ends of the first connecting buckle (14.3) and the second connecting buckle (14.4) are respectively provided with a connecting block, and the two connecting blocks are fixedly connected through a fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010515349.4A CN111425678B (en) | 2020-06-09 | 2020-06-09 | Concrete pump pipe for continuous transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010515349.4A CN111425678B (en) | 2020-06-09 | 2020-06-09 | Concrete pump pipe for continuous transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111425678A true CN111425678A (en) | 2020-07-17 |
| CN111425678B CN111425678B (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010515349.4A Active CN111425678B (en) | 2020-06-09 | 2020-06-09 | Concrete pump pipe for continuous transmission |
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| Country | Link |
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| CN (1) | CN111425678B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202311A (en) * | 2021-04-28 | 2021-08-03 | 上海建工二建集团有限公司 | Concrete pumping self-stirring device and mounting method thereof |
| CN113531241A (en) * | 2021-07-23 | 2021-10-22 | 富山阀门实业(东台)有限公司 | Stop valve structure convenient for mounting faucet |
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| KR20060012693A (en) * | 2004-08-04 | 2006-02-09 | 이도연 | Coupling for jointing a nonferrous matals tube |
| CN204552762U (en) * | 2015-03-30 | 2015-08-12 | 莱州亚通重型装备有限公司 | The injection apparatus of a kind of tunnel concrete spraying machine |
| JP2017110491A (en) * | 2017-01-10 | 2017-06-22 | 株式会社シバシン商会 | Connection structure for pumping pipe |
| CN208456140U (en) * | 2018-06-12 | 2019-02-01 | 平阳安众混凝土有限公司 | A kind of inner tube rotary type concrete delivery pipe |
| CN208457390U (en) * | 2018-04-21 | 2019-02-01 | 广东思豪流体技术有限公司 | A kind of clamp-type connection pipe fitting |
| CN209725521U (en) * | 2019-04-01 | 2019-12-03 | 玫德集团有限公司 | A kind of groove pipeline connecting parts |
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2020
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060012693A (en) * | 2004-08-04 | 2006-02-09 | 이도연 | Coupling for jointing a nonferrous matals tube |
| CN204552762U (en) * | 2015-03-30 | 2015-08-12 | 莱州亚通重型装备有限公司 | The injection apparatus of a kind of tunnel concrete spraying machine |
| JP2017110491A (en) * | 2017-01-10 | 2017-06-22 | 株式会社シバシン商会 | Connection structure for pumping pipe |
| CN208457390U (en) * | 2018-04-21 | 2019-02-01 | 广东思豪流体技术有限公司 | A kind of clamp-type connection pipe fitting |
| CN208456140U (en) * | 2018-06-12 | 2019-02-01 | 平阳安众混凝土有限公司 | A kind of inner tube rotary type concrete delivery pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202311A (en) * | 2021-04-28 | 2021-08-03 | 上海建工二建集团有限公司 | Concrete pumping self-stirring device and mounting method thereof |
| CN113531241A (en) * | 2021-07-23 | 2021-10-22 | 富山阀门实业(东台)有限公司 | Stop valve structure convenient for mounting faucet |
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| Publication number | Publication date |
|---|---|
| CN111425678B (en) | 2020-08-25 |
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