CN211256943U - A efflux nozzle and slip casting are bored for slip casting - Google Patents
A efflux nozzle and slip casting are bored for slip casting Download PDFInfo
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- CN211256943U CN211256943U CN201921371195.5U CN201921371195U CN211256943U CN 211256943 U CN211256943 U CN 211256943U CN 201921371195 U CN201921371195 U CN 201921371195U CN 211256943 U CN211256943 U CN 211256943U
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Abstract
The utility model belongs to the technical field of civil engineering construction utensil, a jet nozzle for slip casting is disclosed, including spouting the chamber, spout the conical through-hole that the chamber is the difference of both ends diameter, wherein spout the great end diameter in chamber and be 2.9 ~ 3.1mm, the tapering that spouts the chamber is 0.059 ~ 0.07. The body of the drill rod is in a hollow round tube shape, a jet flow groove is formed in the outer surface of the drill rod, a jet flow hole communicated with the hollow of the drill rod is formed in the jet flow groove, and the jet flow nozzle is installed in the jet flow hole and does not protrude out of the outer surface of the drill rod body. Use the utility model discloses a fluid jet nozzle and slip casting are bored for the slip casting, the thick liquid of single-point slip casting forms the consolidation body after condensing in the soil body and has longer size and volume, gains to have better slip casting effect, guarantees slip casting construction quality better.
Description
Technical Field
The utility model belongs to the technical field of civil engineering construction utensil, concretely relates to jet nozzle and slip casting are bored for slip casting.
Background
The grouting technology is widely applied to the fields of traffic, construction, municipal administration, mine engineering and the like, and is a technology for reinforcing the stratum by injecting grout into the stratum in a certain pressure through compaction, splitting, permeation and other forms while drilling the stratum by using the grouting.
In the slip casting construction, generally adopt during the drilling rod of hollow tube preparation inserts the stratum, set up some through-holes at the drilling rod lateral wall, then carry the hollow part of thick liquid through the drilling rod with certain pressure, extrude from the through-hole again and infiltrate during the stratum earth, after condensing, the stratum will become more closely knit firm than before, can bear great power and do not take place to sink or other changes.
However, in the existing grouting technology, the range of the grout permeating through the through hole on the side wall of the drill rod at the same drilling point is small, and the dense drilling points must be arranged in the range of the stratum to be reinforced for grouting and the requirement can be met after solidification. The utility model discloses the people research thinks to carry out grouting equipment through changing, can increase single-point grouting's infiltration scope, improves slip casting efficiency of construction to can gain better slip casting effect.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a jet nozzle for slip casting, including spouting the chamber, spout the conical through-hole that the chamber is the difference of both ends diameter, wherein spout the great end diameter in chamber and be 2.9 ~ 3.1mm, spout the tapering in chamber and be 0.059 ~ 0.07.
Preferably, the end with the larger diameter of the spraying cavity is provided with a flow guide cavity, the diameter of the flow guide cavity is 8-11 mm, and the depth of the flow guide cavity is 0.4-0.6 mm.
Preferably, the length of the spray chamber is 18.5 mm.
Preferably, the outer surface of the end with the larger diameter of the spraying cavity of the jet flow nozzle is provided with external threads, and the outer surface of the end with the smaller diameter of the spraying cavity is a regular quadrilateral cylinder or a regular hexagonal cylinder.
Preferably, the jet nozzle is in the shape of a cylinder, and the cross section of the larger-diameter end of the spray cavity is larger than that of the smaller-diameter end of the spray cavity.
Preferably, the spraying cavity is multiple.
The utility model also provides a slip casting bores, including drilling rod and foretell jet nozzle that is used for the slip casting, the body of drilling rod is cavity pipe shape, and the drilling rod surface has the jet groove, set up the hollow jet hole of intercommunication drilling rod in the jet groove, jet nozzle installs at the downthehole surface that does not just bulge drilling rod body of jet.
Preferably, the jet hole has an internal thread, the outer surface of the larger end of the spray cavity diameter of the jet nozzle has an external thread, the outer surface of the smaller end of the spray cavity diameter is a regular quadrilateral cylinder or a regular hexagonal cylinder, and the external thread of the jet nozzle is matched with the internal thread of the jet hole for installation and connection.
Preferably, the jet flow nozzle also comprises a pressure plate and a bolt, the jet flow nozzle is a cylinder in shape, and the section size of the shape of the end with the larger diameter of the spray cavity is larger than that of the end with the smaller diameter of the spray cavity; the hollow part of the communicating drill rod of the jet hole is smaller than the section size of the communicating jet groove, and the section size and the depth size of the communicating jet groove of the jet hole are not smaller than the section size and the length size of the larger diameter end of the jet nozzle; the clamp plate corresponds with the jet hole and sets up the through-hole, and the cross sectional dimension of through-hole is not less than the cross sectional dimension of the less end of jet nozzle diameter and is not more than the cross sectional dimension of the great end of jet nozzle diameter, and the clamp plate compresses tightly the jet nozzle in the jet hole, and the clamp plate is fixed in the jet groove with the countersunk head bolt and does not bulge the surface of drilling rod body.
Preferably, the drilling rod further comprises at least one pair of eccentric wheels, wherein the eccentric wheels are arranged at the tail part of the drilling rod body and driven by a motor to rotate in opposite directions at the same rotating speed.
Preferably, the head of the drill rod is a cone drill bit. The jet flow groove is internally provided with a plurality of jet flow holes. The outer surface of the drill rod is provided with a plurality of jet grooves.
The utility model discloses a jet nozzle and slip casting are bored for slip casting, set the grouting hole into a conical chamber that spouts, under same slip casting pressure, this kind spouts the initial velocity of produced thick liquid efflux and kinetic energy when the chamber shape is used for slip casting, can obtain better infiltration effect and bigger infiltration scope, the thick liquid of single-point slip casting forms the consolidation body after condensing in the soil body and has longer size and volume, reducible slip casting point arrangement density, can gain better slip casting effect, guarantee slip casting construction quality better.
Drawings
FIG. 1 is an elevational, cross-sectional view of an embodiment of a jet nozzle for grouting according to the present invention;
FIG. 2 is a top view of the embodiment of FIG. 1;
FIG. 3 is a cross-sectional front view of an embodiment of a jet nozzle for grouting according to the present invention;
FIG. 4 is a top view of the embodiment of FIG. 3;
FIG. 5 is a third sectional front view of an embodiment of the present invention of a jet nozzle for grouting;
FIG. 6 is a top view of the embodiment of FIG. 5;
fig. 7 is a front view of an embodiment of the present invention;
FIG. 8 is an enlarged cross-sectional view A-A of the embodiment of FIG. 7;
FIG. 9 is a second front view of an embodiment of the present invention;
fig. 10 is an enlarged cross-sectional view B-B of the embodiment of fig. 9.
In the figure: 1-a jet flow nozzle, 101-a spray cavity and 102-a diversion cavity; 2-drill rod, 201-jet groove, 202-jet hole, 203-conical drill bit; 3-eccentric wheel, 301-axis; 4, pressing a plate; 5-bolt.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to solve the technical problems, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, and it should be noted that the drawings are schematic and not drawn to scale or dimension, and therefore the drawings and the specific embodiments are not intended to limit the scope of the present invention.
In an alternative embodiment of the jet nozzle for grouting shown in fig. 1, the jet nozzle 1 includes a nozzle cavity 101, the nozzle cavity 101 is a conical through hole with two different end diameters, wherein the larger end diameter of the nozzle cavity 101 is 3.0mm, the smaller end diameter is 1.8mm, the length of the nozzle cavity 101 is 18.5mm, the taper of the nozzle cavity 101 is 0.065, and the taper herein is calculated as the ratio of the difference of the two end diameters to the length of the nozzle cavity axis; the large-diameter end of the spraying cavity 101 is provided with a flow guide cavity 102, the diameter of the flow guide cavity 102 is 10mm, the depth of the flow guide cavity 102 is 0.5mm, and the outer surface of the large-diameter end of the spraying cavity 101 of the jet nozzle 1 is provided with external threads for being matched with and installed in a jet hole of a drill rod.
Fig. 2 is a top view of the embodiment of the jet nozzle for grouting shown in fig. 1, from which it can be seen that the outer surface of the smaller-diameter end of the nozzle chamber 101 is a regular hexagonal cylinder, and can also be made into a regular quadrangle or a regular octagon, etc., which is convenient for being installed by being clamped by a wrench or being rotated by a sleeve.
In an alternative embodiment of the jet nozzle for grouting shown in fig. 3, the jet nozzle 1 includes a nozzle cavity 101, the nozzle cavity 101 is a conical through hole with two different diameters, wherein the larger end of the nozzle cavity 101 has a diameter of 2.9mm, the length of the nozzle cavity 101 is 18.5mm, and the taper of the nozzle cavity 101 is 0.059; the large-diameter end of the spraying cavity 101 is provided with a flow guide cavity 102, the diameter of the flow guide cavity 102 is 8mm, the depth of the flow guide cavity 102 is 0.4mm, the appearance of the jet nozzle is a cylinder, the section size of the large-diameter end of the spraying cavity 101 is larger than that of the small-diameter end of the spraying cavity, and the different appearance sizes are used for installation and fixation.
FIG. 4 is a top view of an embodiment of the jet nozzle for grouting shown in FIG. 3, wherein the jet nozzle is cylindrical, the upper end and the lower end have different outer diameters, the upper end is the end with the larger diameter of the spraying cavity 101, namely the end with the diameter of 2.9mm of the spraying cavity 101, and the outer diameter of the jet nozzle is also larger; the lower end is the smaller diameter end of the spray cavity 101, and the outer shape diameter is also smaller.
In an alternative embodiment of the jet nozzle for grouting shown in fig. 5, the jet nozzle 1 includes two spray cavities 101 with the same size and shape, the spray cavities 101 are conical through holes with different diameters at two ends, wherein the diameter of the larger end of the spray cavity 101 is 3.1mm, the length of the spray cavity 101 is 18.5mm, and the taper of the spray cavity 101 is 0.07; the large-diameter end of the spraying cavity 101 is provided with a flow guide cavity 102, the diameter of the flow guide cavity 102 is 11mm, the depth of the flow guide cavity 102 is 0.6mm, the appearance of the jet nozzle is a cylinder, the section size of the large-diameter end of the spraying cavity 101 is larger than that of the small-diameter end of the spraying cavity, and the different appearance sizes are used for installation and fixation.
FIG. 6 is a top view of an embodiment of the jet nozzle for grouting shown in FIG. 5, wherein the jet nozzle is a square cylinder, the upper end and the lower end have different external dimensions, the upper end is the end with the larger diameter of the spraying cavity 101, namely the end with the diameter of 3.1mm of the spraying cavity 101, and the external dimension of the jet nozzle is also larger; the lower end is the smaller diameter end of the spray cavity 101, and the square size is smaller.
The alternative embodiment of the grouting drill shown in fig. 7 comprises a drill rod 2, two eccentric wheels 3 and the jet nozzle 1 for grouting shown in the above embodiment of fig. 1 and 2, wherein the body of the drill rod 2 is in a hollow round tube shape, the head of the drill rod 2 is a conical drill bit 203, the two eccentric wheels 3 are symmetrically installed at the tail of the body of the drill rod 2, the axial center 301 of the eccentric wheel 3 is connected with an electric motor (or a hydraulic motor), and the two eccentric wheels rotate in opposite directions at the same rotating speed under the driving of the electric motor (or the hydraulic motor), as shown by arrows in the figure; the outer surface of the drill rod 2 is provided with a jet flow groove 201, two jet flow holes 202 communicated with the hollow part of the drill rod are arranged in the jet flow groove 201, the jet flow holes 202 are provided with internal threads, the jet flow nozzle 1 of the embodiment shown in fig. 1 and fig. 2 is arranged in the jet flow holes 202, the external threads of the jet flow nozzle 1 are matched, arranged and connected with the internal threads of the jet flow holes 202, and the exposed regular hexagon end of the jet flow nozzle 1 is ensured not to protrude out of the cylindrical outer surface of the drill rod 2 body, namely the thickness dimension of the regular hexagon is smaller than the depth dimension of the; the eccentric wheels are symmetrically distributed by the axial lead of the body of the drill rod 2, and generate exciting force which is offset in the horizontal direction and superposed in the vertical direction under the driving of a motor or a hydraulic motor. The length of the drill rod can be adjusted according to the depth of the soil layer.
Fig. 8 is an enlarged sectional view a-a of the embodiment of the slip casting drill shown in fig. 7, and it can be seen from the figure that four jet grooves 201 are uniformly arranged in different directions at the same cross-sectional position on the outer surface of the circular pipe-shaped drill rod 2, each jet groove 201 is provided with two jet holes 202 communicated with the hollow part of the drill rod for installing the jet nozzle 1, the thickness dimension of the regular hexagon outside the smaller end of the spray cavity of the jet nozzle 1 is smaller than the depth dimension of the jet groove 201, so that it is ensured that the exposed regular hexagon end of the jet nozzle 1 does not protrude out of the cylindrical outer surface of the drill rod 2 body after installation. When the grouting plug is used, a part of or all the jet nozzles can be selected for grouting according to the requirements of working conditions, the used jet nozzles are plugged by the special plug, and consolidated bodies in different shapes such as cross plates, right-angle plates, horizontal plates and the like can be formed to be water-stopping anti-seepage plates through the grouting plug.
The alternative embodiment of the grouting drill shown in fig. 9 comprises a drill rod 2, two eccentric wheels 3, a pressure plate 4, a bolt 5 and the jet nozzle 1 for grouting shown in the above embodiment of fig. 3 and 4, wherein the body of the drill rod 2 is in a hollow round tube shape, the head of the drill rod 2 is a conical drill bit 203, the two eccentric wheels 3 are symmetrically installed at the tail of the body of the drill rod 2, the axial center 301 of the eccentric wheel 3 is connected with an electric motor (or a hydraulic motor), and the eccentric wheels are driven by the electric motor (or the hydraulic motor) to rotate in opposite directions at the same rotating speed, as shown by arrows in the figure; the outer surface of the drill rod 2 is provided with a jet flow groove 201, a jet flow hole 202 communicated with the hollow of the drill rod is arranged in the jet flow groove 201, the jet flow nozzle 1 of the embodiment shown in fig. 3 and 4 is arranged in the jet flow hole 202 and is tightly pressed by a pressing plate 4, the pressing plate 4 and the jet flow hole 202 are correspondingly provided with through holes, the cross-sectional dimension of each through hole is not less than the smaller end dimension of the outer diameter of the jet flow nozzle 1 and not more than the larger end dimension of the outer diameter of the jet flow nozzle 1, the pressing plate 4 is fixed in the jet flow groove 201 by a bolt 5, and the jet flow nozzle 1 and the bolt 5 are; the eccentric wheels are symmetrically distributed by the axial lead of the body of the drill rod 2, and generate exciting force which is offset in the horizontal direction and superposed in the vertical direction under the driving of a motor or a hydraulic motor. The length of the drill rod can be adjusted according to the depth of the soil layer.
Fig. 10 is a sectional enlarged view from B to B of the embodiment of the slip casting drill in fig. 9, and it can be seen from the figure that four jet grooves 201 are uniformly arranged in different directions at the same cross-sectional position on the outer surface of the circular pipe-shaped drill rod 2, each jet groove 201 is provided with a jet hole 202 communicated with the hollow part of the drill rod for installing the jet nozzle 1, and after installation, the jet nozzle 1 and the bolt 5 are ensured not to protrude out of the cylindrical outer surface of the drill rod 2 body.
The grouting drill of the embodiment adopts an acoustic frequency vibration grouting principle, generates an exciting force by the rotation of a reverse eccentric wheel, drives a drill rod to push in a stratum, simultaneously causes the pore water pressure of a soil body at the position of the drill rod to rise, reduces the strength of the soil body, can form a softening zone, and injects grout (cement paste, water glass, chemical grout and the like) into the stratum in a certain grouting pressure through compaction, splitting, permeation and other forms when drilling into the stratum, thereby reinforcing the stratum. The vibration parameters of the eccentric wheel comprise vibration duration, vibration frequency and vibration amplitude. The generated exciting force is different, and the conditions for driving the drilling tool to move forwards are different; the damage degree (pore water pressure and soil strength) of the soil body caused by vibration is different, and different vibration parameters are adjusted for different stratums. According to different stratum characteristics, different grouting pressures and vibration frequencies can be selected, and the number of nozzles can be adjusted (realized by the hexagon bolts with the same size, namely the plugging plugs) to achieve different grouting effects. The jet groove has guaranteed the planarization of jet nozzle and slip casting drilling rod, can not cause the resistance in creeping into in the stratum, makes things convenient for jet nozzle's installation and change (including the use of slip casting stifled stopper) simultaneously, punches in the jet groove and link up drilling rod hollow portion, guarantees that the thick liquid flows out from the drilling rod.
The factors influencing the grouting effect include vibration duration, vibration frequency, vibration amplitude, grouting pressure, slurry rheological property, jet nozzle performance and the like in various aspects. The best grouting effect can be achieved only by selecting the optimal parameters for a specific stratum. The velocity calculation formula of the high-pressure grouting jet flow is as follows:
in the formula:
ν0represents the jet nozzle exit flow velocity (m/s);
p represents the jet nozzle inlet pressure (Pa);
p0denotes the jet nozzle outlet pressure (Pa);
r represents the water gravity (N/m)3)；
g represents the acceleration of gravity (m/s)2)；
From the formula, it can be known that good nozzle parameters are needed to obtain the best grouting effect (i.e. high jet velocity, high slurry energy, long jet distance, large consolidated body volume).
Of course, the present invention can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications are within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a jet nozzle for slip casting, its characterized in that, is including spouting the chamber, it is the conical through-hole that both ends diameter is different to spout the chamber, wherein spouts the great end diameter in chamber and be 2.9 ~ 3.1mm, it is 18.5mm to spout the length in chamber, and the tapering in chamber of spouting is 0.059 ~ 0.07.
2. The jet nozzle for grouting according to claim 1, wherein a diversion cavity is arranged at the end with the larger diameter of the spraying cavity, the diameter of the diversion cavity is 8-11 mm, and the depth of the diversion cavity is 0.4-0.6 mm.
3. The jet nozzle for grouting according to claim 1, wherein the outer surface of the end with the larger diameter of the spray cavity of the jet nozzle is externally threaded, and the outer surface of the end with the smaller diameter of the spray cavity is a regular quadrangular cylinder or a regular hexagonal cylinder.
4. The jet nozzle for grouting according to claim 1, characterized in that the jet nozzle is cylindrical in shape, and the cross-sectional dimension of the outer shape of the end with the larger diameter of the nozzle cavity is larger than that of the end with the smaller diameter.
5. The jet nozzle for grouting according to any one of claims 1-4, characterized in that the nozzle chamber is multiple.
6. The grouting drill is characterized by comprising a drill stem and the jet nozzle for grouting, wherein the jet nozzle for grouting is arranged in the claim 1, the body of the drill stem is in the shape of a hollow round pipe, the outer surface of the drill stem is provided with a jet groove, a jet hole communicated with the hollow part of the drill stem is arranged in the jet groove, and the jet nozzle is arranged in the jet hole and does not protrude out of the outer surface of the drill stem body.
7. The grouting drill according to claim 6, wherein the jet hole is provided with internal threads, the outer surface of the end with the larger diameter of the spray cavity of the jet nozzle is provided with external threads, the outer surface of the end with the smaller diameter of the spray cavity is a regular quadrilateral cylinder or a regular hexagonal cylinder, and the external threads of the jet nozzle are matched and installed with the internal threads of the jet hole.
8. The grouting drill according to claim 6, further comprising a pressure plate and a bolt, wherein the jet nozzle is shaped like a cylinder, and the cross section of the larger-diameter end of the spray cavity is larger than that of the smaller-diameter end of the spray cavity; the hollow part of the communicating drill rod of the jet hole is smaller than the section size of the communicating jet groove, and the section size and the depth size of the communicating jet groove of the jet hole are not smaller than the section size and the length size of the larger diameter end of the jet nozzle; the clamp plate corresponds with the jet hole and sets up the through-hole, and the cross sectional dimension of through-hole is not less than the cross sectional dimension of the less end of jet nozzle diameter and is not more than the cross sectional dimension of the great end of jet nozzle diameter, and the clamp plate compresses tightly the jet nozzle in the jet hole, and the clamp plate is fixed in the jet groove with the countersunk head bolt and does not bulge the surface of drilling rod body.
9. The slip casting drill according to any one of claims 6 to 8, further comprising at least one pair of eccentrics mounted at the tail of the body of the drill rod and driven by a motor to rotate in opposite directions at the same rotation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921371195.5U CN211256943U (en) | 2019-08-22 | 2019-08-22 | A efflux nozzle and slip casting are bored for slip casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921371195.5U CN211256943U (en) | 2019-08-22 | 2019-08-22 | A efflux nozzle and slip casting are bored for slip casting |
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| Publication Number | Publication Date |
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| CN211256943U true CN211256943U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921371195.5U Active CN211256943U (en) | 2019-08-22 | 2019-08-22 | A efflux nozzle and slip casting are bored for slip casting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468827A (en) * | 2019-08-22 | 2019-11-19 | 中冶交通建设集团有限公司 | It is bored for the jet nozzle of slip casting and slip casting |
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2019
- 2019-08-22 CN CN201921371195.5U patent/CN211256943U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468827A (en) * | 2019-08-22 | 2019-11-19 | 中冶交通建设集团有限公司 | It is bored for the jet nozzle of slip casting and slip casting |
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