CN113069968A - Mixing device for improving measurement precision of shield slurry densimeter - Google Patents
Mixing device for improving measurement precision of shield slurry densimeter Download PDFInfo
- Publication number
- CN113069968A CN113069968A CN202110523957.4A CN202110523957A CN113069968A CN 113069968 A CN113069968 A CN 113069968A CN 202110523957 A CN202110523957 A CN 202110523957A CN 113069968 A CN113069968 A CN 113069968A
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- Prior art keywords
- mud
- roller
- self
- improving
- measurement accuracy
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Links
- 238000005259 measurement Methods 0.000 title claims abstract description 24
- 239000002002 slurry Substances 0.000 title claims description 32
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000002285 radioactive effect Effects 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000001739 density measurement Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/60—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers
- B01F29/63—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers with fixed bars, i.e. stationary, or fixed on the receptacle
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/24—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing the transmission of wave or particle radiation through the material
Abstract
The invention relates to a mixing device for improving the measurement accuracy of a shield mud densimeter, which comprises an external motor positioned outside a mud pipe, an inner roller and an outer roller, wherein the inner roller and the outer roller are coaxial with the mud pipe; the urceolus be used for with two mud pipe fixed connection, interior cylinder both ends stretch into respectively in two mud pipes and be equipped with respectively on the lateral wall at interior cylinder both ends be used for with two mud pipe seal complex sealing washer, the interior cylinder receives drive gear transmission during the use and rotates, mud is along with interior cylinder misce bene, can reduce layering, density inequality gives the error that follow-up density measurement brought, improves density measurement accuracy.
Description
Technical Field
The invention relates to the technical field of shield construction, in particular to a mixing device for improving the measurement precision of a shield mud densimeter.
Background
In the technical field of shield construction, a radioactive densimeter is generally used for measuring the density of shield slurry, an emission source in the radioactive densimeter emits gamma rays to a receiving probe, the attenuation degree of the gamma rays when the gamma rays pass through a measured medium has a certain relation with the density of the measured medium, and the density of the medium is measured in a non-contact manner according to the principle.
When shield mud is transported in a mud pipe, the mud in the mud pipe is usually uneven two-component liquid, the mud flows in a layered mode, the density of the upper-layer liquid is different from that of the lower-layer liquid, large errors are brought to the measurement work of a radioactive densimeter arranged on the mud pipe, and the measurement accuracy of the shield mud density is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a mixing device for improving the measurement precision of a shield slurry densimeter, which can solve the problem of measurement errors caused by shield slurry layering in the prior art to a radioactive densimeter and improve the measurement precision of shield slurry density.
The invention provides the following technical scheme: a mixing device for improving the measurement accuracy of a shield mud densimeter is used for being installed between two mud pipes and located at the upstream position of a radioactive densimeter in the mud flow direction and comprises an external motor located on the outer side of the mud pipes, an inner roller and an outer roller, wherein the inner roller and the outer roller are coaxial with the mud pipes;
the outer cylinder is used for being fixedly connected with the two slurry pipes, the two ends of the inner roller respectively extend into the two slurry pipes, sealing rings which are in sealing fit with the two slurry pipes are respectively arranged on the outer side walls of the two ends of the inner roller, the inner roller rotates under the transmission of the driving gear when in use, and slurry rotates along with the inner roller and is uniformly mixed.
Has the advantages that: when the device is used, the external motor drives the driving gear to rotate, the driving gear extends into the extending opening to be in meshing transmission with the roller gear, the inner roller can rotate relative to the outer roller, when slurry flows through the inner roller, the slurry can rotate along with the inner roller, and then the slurry is uniformly mixed and flows to the radioactive densimeter at a downstream position. The mixing device for improving the measurement accuracy of the shield mud densimeter is arranged at the upstream position of the radioactive densimeter when in use, well mixes the layered mud in the mud pipeline, has ingenious conception, can avoid the error brought to density measurement by mud layering, and solves the problem of low measurement accuracy of the radioactive densimeter in the prior art.
Further, the inner side wall of the inner roller is provided with a helical blade.
Has the advantages that: the mixing of the slurry is accelerated, and the stirring effect is more uniform.
Further, the outer cylinder is rotatably connected with the inner cylinder through the self-aligning roller bearings, the outer ring and the inner ring of each self-aligning roller bearing are in interference fit with the inner side wall of the outer cylinder and the outer side wall of the inner cylinder respectively, and the two self-aligning roller bearings are located at two ends of the inner cylinder.
Has the advantages that: the self-aligning roller bearing can bear radial load and axial load, and because the inner roller and the outer roller are under axial force action in the processes of conveying and stirring the slurry, the self-aligning roller bearing is adopted, the outer roller and the inner roller are in stable running fit, and the self-aligning roller bearing is not easy to damage.
Furthermore, mounting grooves are formed in the two sides, deviating from each other, of the two self-aligning roller bearings on the outer side wall of the inner roller, retaining rings used for limiting the axial movement of the self-aligning roller bearings in a one-way mode are mounted inside the mounting grooves, and annular step surfaces used for being matched with the two self-aligning roller bearings in an axial retaining mode are arranged between the two self-aligning roller bearings on the inner side wall of the outer barrel.
Has the advantages that: by adopting the structure, the self-aligning roller bearing is not easy to shift in the axial direction, the axial force transmission among the self-aligning roller bearing, the outer cylinder and the inner cylinder is stable, and the structure is firm.
Further, the sealing ring is a VDS type sealing ring.
Has the advantages that: the VDS sealing ring has good sealing effect and can better prevent slurry from seeping out.
Furthermore, flanges for being connected with the two slurry pipe bolts are arranged at the two ends of the outer barrel.
Has the advantages that: the outer barrel is connected with the mud pipe through a flange, the connection is tight, and the disassembly and the assembly are convenient.
Drawings
FIG. 1 is a schematic view of the state of use of a particular embodiment 1 of the mixing apparatus of the present invention for improving the measurement accuracy of a shield mud densitometer;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
reference numerals: 1-a mud pipe; 2-an inner drum; 3-outer cylinder: 4-an external motor; 5-driving the gear; 6-self-aligning roller bearing; 7-a retainer ring; 8-an annular step surface; 9-helical blades; 10-VDS type seal ring; 11-a drum gear; 12-a flange; 13-the protrusion opening.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The concrete embodiment 1 of the mixing device for improving the measurement precision of the shield slurry densitometer of the invention is as follows:
as shown in fig. 1-2, the invention is installed between two slurry pipes 1, is located at the upstream position of a radioactive densimeter (not shown in the figure) in the slurry flow direction, and mainly comprises an inner roller 2, an outer roller 3 and an external motor 4, wherein the inner roller 2 is rotatably assembled inside the outer roller 3 through self-aligning roller bearings 6 located at the outer sides of the two ends of the inner roller 2, the outer ring and the inner ring of the self-aligning roller bearing 6 are respectively in interference fit with the inner side wall of the outer roller and the outer side wall of the inner roller, mounting grooves for mounting retaining rings 7 are arranged on the outer side wall of the inner roller 2 at the two opposite sides of the two self-aligning roller bearings 6, and the retaining rings 7 are used for unidirectionally limiting the axial displacement of the; in addition, the annular step surface 8 which is respectively matched with the two self-aligning roller bearings 6 in an axial blocking manner is arranged between the two self-aligning roller bearings 6 on the inner side wall of the outer cylinder 3, so that the axial movement of the self-aligning roller bearings 6 is limited, the axial force can be well transmitted among the self-aligning roller bearings 6, the outer cylinder 3 and the inner roller 2, and the structural matching is stable.
The two ends of the outer cylinder 3 are respectively provided with a flange 12, correspondingly, the end parts of the two mud pipes are also provided with pipeline flanges used for being matched with the flanges 12, and the outer cylinder 3 is fixedly connected with the two mud pipes through the flanges 12, bolts and nuts. The both ends of interior cylinder 2 stretch into respectively in two mud pipes and be equipped with the seal groove on the lateral wall of interior cylinder 2, be equipped with in the seal groove and be used for making and keep sealed complex sealing washer between interior cylinder 2 and the mud pipe, in this embodiment, the sealing washer is VDS type sealing washer 10, and the leakproofness is better, can prevent that mud from oozing from between interior cylinder 2 and the mud pipe.
The output of external motor 4 is connected with drive gear 5 through key cooperation spline, an organic whole is provided with cylinder gear 11 on the lateral wall of interior cylinder 3, with this correspondence, set up the mouth 13 that stretches into that supplies drive gear 5 to stretch into in the position department corresponding with cylinder gear 11 on urceolus 3, drive gear 5 stretches into 3 insides of urceolus and with the transmission of 11 meshing of cylinder gear from stretching into mouth 13, 2 rotations of cylinder in the 4 accessible drive gear of external motor 5 drive, then make the same rotary motion of 2 inside mud through interior cylinder, in order to mix the mud evenly. In order to make the slurry mixing effect more uniform and faster, the inner side wall of the inner drum 2 is provided with a helical blade 9 for stirring the slurry.
According to the mixing device for improving the measurement accuracy of the shield slurry densimeter, when the mixing device is used, slurry is mixed and stirred through the rotating inner roller 2, the phenomenon of slurry stratification is eliminated as much as possible, the density of the mixed slurry is uniform, then the density is measured through the radioactive densimeter positioned at the downstream position, a measurement result with high accuracy can be obtained, errors caused by slurry stratification to density measurement are effectively eliminated, and the measurement accuracy is improved.
The self-aligning roller bearing has the advantages that the conception is ingenious, the structure is unique, the inner roller and the outer cylinder are in rotating fit through the self-aligning roller bearing, when the inner roller and flowing slurry interact, the self-aligning roller bearing can bear radial force and bidirectional axial force, the bearing effect is good, and the inner roller can be ensured to rotate stably; the outer barrel is provided with an annular step surface which can play a role of pushing the bearing, the inner roller and the mud pipe are in dynamic sealing through the VDS type sealing ring, and the sealing and seepage-proofing effects are good.
The concrete embodiment 2 of the mixing device for improving the measurement precision of the shield slurry densitometer of the invention is as follows:
unlike embodiment 1, the drum gear is fixed to the outer sidewall of the inner drum.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. A mixing device for improving the measurement accuracy of a shield mud densimeter is characterized by being arranged between two mud pipes and positioned at the upstream position of a radioactive densimeter in the mud flow direction and comprising an external motor positioned outside the mud pipes, an inner roller and an outer roller which are coaxial with the mud pipes, wherein the inner roller is rotatably assembled inside the outer roller;
the outer cylinder is used for being fixedly connected with the two slurry pipes, the two ends of the inner roller respectively extend into the two slurry pipes, sealing rings which are in sealing fit with the two slurry pipes are respectively arranged on the outer side walls of the two ends of the inner roller, the inner roller rotates under the transmission of the driving gear when in use, and slurry rotates along with the inner roller and is uniformly mixed.
2. The mixing apparatus for improving the measurement accuracy of a shield mud densitometer of claim 1, wherein the inner sidewall of the inner drum is provided with helical blades.
3. The mixing device for improving the measurement accuracy of the shield mud densimeter according to claim 2, wherein the outer cylinder is rotatably connected to the inner cylinder through a self-aligning roller bearing, an outer ring and an inner ring of the self-aligning roller bearing are respectively in interference fit with an inner sidewall of the outer cylinder and an outer sidewall of the inner cylinder, and two self-aligning roller bearings are provided and located at two ends of the inner cylinder.
4. The mixing device for improving the measurement accuracy of the shield mud densimeter according to claim 3, wherein the outer sidewall of the inner drum has mounting grooves on two sides of the inner drum, which are away from each other, the mounting grooves are internally provided with retaining rings for one-way limiting the axial movement of the self-aligning roller bearings, and the inner sidewall of the outer drum has annular step surfaces between the two self-aligning roller bearings for axial stop-fitting with the two self-aligning roller bearings.
5. The mixing apparatus for improving the measurement accuracy of a shield mud densitometer of any of claims 1 to 4, wherein the seal is a VDS type seal.
6. The mixing apparatus for improving the measurement accuracy of a shield mud densitometer of any one of claims 1 to 4, wherein the outer barrel is provided at both ends with flanges for bolting to the two mud pipes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110523957.4A CN113069968A (en) | 2021-05-13 | 2021-05-13 | Mixing device for improving measurement precision of shield slurry densimeter |
| PCT/CN2021/130603 WO2022237104A1 (en) | 2021-05-13 | 2021-11-15 | Mixing device for improving measurement precision of shield slurry density meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110523957.4A CN113069968A (en) | 2021-05-13 | 2021-05-13 | Mixing device for improving measurement precision of shield slurry densimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113069968A true CN113069968A (en) | 2021-07-06 |
Family
ID=76616721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110523957.4A Pending CN113069968A (en) | 2021-05-13 | 2021-05-13 | Mixing device for improving measurement precision of shield slurry densimeter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113069968A (en) |
| WO (1) | WO2022237104A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022237104A1 (en) * | 2021-05-13 | 2022-11-17 | 盾构及掘进技术国家重点实验室 | Mixing device for improving measurement precision of shield slurry density meter |
Citations (5)
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|---|---|---|---|---|
| CN102441336A (en) * | 2011-09-24 | 2012-05-09 | 太原理工大学 | Solid material mixer driven by linear motor |
| CN204772978U (en) * | 2015-06-29 | 2015-11-18 | 王冲 | Foam concrete density regulation and control device |
| CN205616752U (en) * | 2016-03-21 | 2016-10-05 | 华南理工大学 | Wet mixing arrangement that is responsible for a task until it is completed of mud |
| CN111467989A (en) * | 2019-12-30 | 2020-07-31 | 江苏汉邦科技有限公司 | Novel circulating dynamic online mixer |
| CN111948094A (en) * | 2020-09-16 | 2020-11-17 | 山东东山王楼煤矿有限公司 | Overlying strata isolation grouting filling slurry density detection device and system thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5689694A (en) * | 1979-12-18 | 1981-07-21 | Tekken Constr Co | Method of controlling excavating construction of next ring length in method of construction of muddy water shielding excavation |
| GB0725199D0 (en) * | 2007-12-22 | 2008-01-30 | Precision Energy Services Inc | Measurement tool and method of use |
| CN202748288U (en) * | 2012-05-17 | 2013-02-20 | 陈亚萍 | Densimeter capable of continuously measuring flowing slurry in pipeline |
| CN202854001U (en) * | 2012-07-30 | 2013-04-03 | 昆明理工大学 | Composite on-line detection device for density of ore pulp |
| NL2011755C2 (en) * | 2013-11-07 | 2015-05-11 | Imotec Holding B V | DENSITY METER FOR SLURRY. |
| CN205896429U (en) * | 2016-07-21 | 2017-01-18 | 中山中舟海洋科技有限公司 | Steel pipe with in real time from cleaning function |
| CN208406869U (en) * | 2018-05-31 | 2019-01-22 | 攀枝花学院 | Efficient Agitator |
| CN113069968A (en) * | 2021-05-13 | 2021-07-06 | 盾构及掘进技术国家重点实验室 | Mixing device for improving measurement precision of shield slurry densimeter |
-
2021
- 2021-05-13 CN CN202110523957.4A patent/CN113069968A/en active Pending
- 2021-11-15 WO PCT/CN2021/130603 patent/WO2022237104A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441336A (en) * | 2011-09-24 | 2012-05-09 | 太原理工大学 | Solid material mixer driven by linear motor |
| CN204772978U (en) * | 2015-06-29 | 2015-11-18 | 王冲 | Foam concrete density regulation and control device |
| CN205616752U (en) * | 2016-03-21 | 2016-10-05 | 华南理工大学 | Wet mixing arrangement that is responsible for a task until it is completed of mud |
| CN111467989A (en) * | 2019-12-30 | 2020-07-31 | 江苏汉邦科技有限公司 | Novel circulating dynamic online mixer |
| CN111948094A (en) * | 2020-09-16 | 2020-11-17 | 山东东山王楼煤矿有限公司 | Overlying strata isolation grouting filling slurry density detection device and system thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022237104A1 (en) * | 2021-05-13 | 2022-11-17 | 盾构及掘进技术国家重点实验室 | Mixing device for improving measurement precision of shield slurry density meter |
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| Publication number | Publication date |
|---|---|
| WO2022237104A1 (en) | 2022-11-17 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210706 |