CN117552785B - Frosted jet device - Google Patents

Frosted jet device Download PDF

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Publication number
CN117552785B
CN117552785B CN202410045428.1A CN202410045428A CN117552785B CN 117552785 B CN117552785 B CN 117552785B CN 202410045428 A CN202410045428 A CN 202410045428A CN 117552785 B CN117552785 B CN 117552785B
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CN
China
Prior art keywords
connector
nozzles
ejector
cylindrical cavity
hole
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CN202410045428.1A
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Chinese (zh)
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CN117552785A (en
Inventor
夏永学
杨光宇
秦子晗
孙如达
杜涛涛
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Ccteg Coal Mining Research Institute Co ltd
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Ccteg Coal Mining Research Institute Co ltd
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Priority to CN202410045428.1A priority Critical patent/CN117552785B/en
Publication of CN117552785A publication Critical patent/CN117552785A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
    • E21C37/12—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
    • B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B24C5/04—Nozzles therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1066—Making by using boring or cutting machines with fluid jets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Nozzles (AREA)

Abstract

The invention discloses a frosted ejector, which comprises an ejector main body, a first connector, a second connector and a plurality of elastic pieces, wherein a flow channel and a plurality of nozzles are arranged in the ejector main body, the nozzles are communicated with the flow channel, and the injection directions of at least two nozzles form an included angle in the circumferential direction of the ejector main body; the ejector main body is connected between the first connector and the second connector, one of the first connector and the second connector is provided with a liquid inlet, and the liquid inlet is communicated with the flow channel; the plurality of elastic pieces are arranged at intervals along the circumferential direction of the ejector main body, each nozzle is exposed from the interval between two adjacent elastic pieces, one end of each elastic piece is connected with the first joint, the other end of each elastic piece is connected with the second joint, and the outer wall surface of each elastic piece is used for elastically stopping with the wall of a drilled hole. The frosted jet device can avoid the rotation caused by the reaction force of high-pressure water when in use, ensures the consistency and accuracy of the joint cutting direction and improves the cutting and fracturing effects.

Description

Frosted jet device
Technical Field
The invention relates to the technical field of coal mining, in particular to a frosted ejector for roof cutting.
Background
The problems of large roadway deformation and strong mine pressure appearance caused by the fact that a thick and hard roof of a coal mine cannot collapse in time after mining can be caused, and further potential hazards of dynamic disasters such as rock burst, mine vibration and the like can be brought. In order to avoid the problems, the prior art generally adopts a roof frosting jet axial roof cutting technology to cut the thick and hard roof, and the technology has the advantages of accurate pressure relief, large pressure relief radius, safety, high efficiency and the like, and is applied to a plurality of mining areas in China and achieves remarkable effects.
However, the frosted roof cutting technology has the following two problems in the practical application process: 1) During the high-pressure frosted water jet, the jet device easily rotates under the action of the counterforce of the high-pressure water, so that the joint cutting direction deviates from the design direction, and the cutting and fracturing effects are affected; 2) In order to solve the problems of roadway trend and tendency to roof suspension, two cracks are needed to be prefabricated in the same hole, so that a nozzle with two axes crossing to form 90 degrees is needed to be built in the ejector, and meanwhile, in order to ensure the slotting depth and slotting efficiency, the length of a nozzle sand pipe is needed to be increased, the diameter of the ejector is increased, and for this purpose, the drilling diameter of a top plate is needed to be increased to be more than 100mm, so that the construction difficulty is high, the efficiency is low, and the cost is high.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the invention provides the frosted ejector, which can avoid the rotation caused by the reaction force of high-pressure water when in use, ensure the consistency and accuracy of the joint cutting direction and improve the cutting and fracturing effects.
The grinding jet device of the embodiment of the invention comprises:
the ejector comprises an ejector main body, wherein a runner and a plurality of nozzles are arranged in the ejector main body, the nozzles are communicated with the runner, and the injection directions of at least two nozzles form included angles in the circumferential direction of the ejector main body;
the ejector body is connected between the first connector and the second connector, one of the first connector and the second connector is provided with a liquid inlet, and the liquid inlet is communicated with the flow channel;
the elastic pieces are arranged at intervals along the circumferential direction of the jet body, each nozzle is exposed out of the interval between every two adjacent elastic pieces, one end of each elastic piece is connected with the first connector, the other end of each elastic piece is connected with the second connector, and the outer wall surface of each elastic piece is used for being elastically abutted against the wall of a drilled hole so that the abrasive jet is in anti-rotation fit with the drilled hole.
The frosted jet device provided by the embodiment of the invention can avoid the rotation caused by the reaction force of high-pressure water when in use, ensures the consistency and accuracy of the joint cutting direction, and improves the cutting and fracturing effects.
In some embodiments, the first connector is provided with a plurality of first grooves, the first grooves are arranged at intervals along the circumferential direction of the first connector, each first groove extends along the axial direction of the first connector, and one ends of the elastic pieces are embedded and fixed in the first grooves in a one-to-one correspondence manner;
the second connector is provided with a plurality of second grooves, the second grooves are distributed at intervals along the circumferential direction of the second connector, each second groove extends along the axial direction of the second connector, and the other ends of the elastic pieces are embedded in the second grooves in a one-to-one correspondence mode.
In some embodiments, one end of the elastic piece is provided with a first long hole, the extending direction of the first long hole is consistent with that of the first groove, the bottom of the first groove is provided with a first hole, and the first long hole and the first hole are used for assembling a first fastener for fixing the elastic piece and the first joint;
the other end of the elastic piece is provided with a second long hole, the extending direction of the second long hole is consistent with that of the second groove, the bottom of the second groove is provided with a second hole, and the second long hole and the second hole are used for assembling a second fastener for fixing the elastic piece and the second joint.
In some embodiments, the elastic member comprises an arc-shaped section protruding to the outer side of the jet body and used for elastically stopping against the wall of the drilled hole, and each nozzle is arranged at a space between two adjacent arc-shaped sections.
In some embodiments, the ejector body comprises:
a first end cover and a second end cover, which are oppositely arranged in the axial direction of the ejector body;
the pipeline is connected between the first end cover and the second end cover, the nozzles are arranged on the pipeline, and the inner holes of the pipeline form the flow channel.
In some embodiments, the tubing comprises:
the main pipe section is connected with the first end cover and is used for communicating with the liquid inlet;
the branch pipe sections are connected with the main pipe section, the other ends of the branch pipe sections are connected with the second end cover, and the nozzles are connected to the branch pipe sections in a one-to-one correspondence mode.
In some embodiments, the branch pipe sections include radial sections extending along a radial direction of the ejector body and connected between the axial sections of the main pipe section, and axial sections extending along an axial direction of the ejector body, and the injection direction of the nozzles on the same branch pipe section is opposite to the flow direction of the fluid in the radial sections of the branch pipe sections.
In some embodiments, the first end cap is provided with a first cylindrical cavity, a portion of the first connector fits within the first cylindrical cavity, the second end cap is provided with a second cylindrical cavity, a portion of the second connector fits within the second cylindrical cavity, the main pipe section is in communication with the first cylindrical cavity, and the main pipe section, the first cylindrical cavity and the second cylindrical cavity are coaxially arranged, with a plurality of the nozzles located between the first cylindrical cavity and the second cylindrical cavity.
In some embodiments, the ejector body comprises a cylinder body, the cylinder body is connected between the first end cover and the second end cover, the first cylindrical cavity, the second cylindrical cavity, the pipeline and the nozzles are all located in the cylinder body, a plurality of holes are formed in the cylinder body, and the nozzles are exposed out of the holes one by one.
In some embodiments, the included angle formed by the injection directions of at least two of the nozzles is 90 degrees.
Drawings
Fig. 1 is a schematic view of the overall structure of a sanding jet according to an embodiment of the present invention.
Fig. 2 is a schematic view of the ejector body of fig. 1.
Reference numerals:
a jet body 1; a nozzle 11; a pipeline 12; a main pipe section 121; a branch pipe section 122; a radial segment 1221; an axial segment 1222; a first end cap 13; a first cylindrical cavity 131; a second end cap 14; a second cylindrical cavity 141; a cylinder 15;
a first joint 2; a first groove 21; a first hole 22;
a second joint 3; a second groove 31; a second hole 32;
an elastic member 4; an arcuate segment 41; a first long hole 42; a second elongated hole 43.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1, the sanding jet according to the embodiment of the present invention includes a jet body 1, a first joint 2, a second joint 3, and a plurality of elastic members 4.
The ejector main body 1 is internally provided with a flow channel and a plurality of nozzles 11, the nozzles 11 are communicated with the flow channel, and the injection directions of at least two nozzles 11 form an included angle in the circumferential direction of the ejector main body 1. For example, as shown in fig. 2, the ejector body 1 may include a pipe 12, the pipe 12 extending generally in a left-to-right direction, and a flow passage may be formed in the pipe 12.
The two nozzles 11 may be provided, and the two nozzles 11 may be assembled on the pipe 12 and may be arranged at intervals along the left-right direction, and the two nozzles 11 may be arranged in a staggered manner along the circumference of the ejector main body 1, so that the two nozzles 11 may be capable of spraying high-pressure abrasive water to different directions, so that cutting of two slits may be simultaneously realized.
In other embodiments, three, four, etc. nozzles 11 may be provided, where each nozzle 11 may face different directions, and in other embodiments, the spraying directions of some nozzles 11 may be the same, so that the cutting quality of the same kerf may be ensured.
The ejector body 1 is connected between the first joint 2 and the second joint 3, and one of the first joint 2 and the second joint 3 is provided with a liquid inlet hole, and the liquid inlet hole is communicated with the flow channel. For example, as shown in fig. 1, the first joint 2 may be fixed to the left end of the ejector body 1, and the second joint 3 may be fixed to the right end of the ejector body 1. The liquid inlet hole can be arranged in the first connector 2, can extend along the central axis of the first connector 2, and can be directly communicated with the flow channel after the first connector 2 is assembled on the ejector main body 1.
When the joint is used, the first joint 2 can be connected with a drill rod, the second joint 3 can be connected with a drill bit, high-pressure frosted water and the like can be introduced into the liquid inlet through a channel in the drill rod, the high-pressure frosted water can flow to each nozzle 11 through a flow channel after flowing through the liquid inlet, and finally the high-pressure frosted water can be sprayed out from each nozzle 11, so that the joint cutting operation can be realized.
The plurality of elastic pieces 4 are arranged at intervals along the circumferential direction of the jet body 1, each nozzle 11 is exposed from the interval between two adjacent elastic pieces 4, one end of each elastic piece 4 is connected with the first connector 2, the other end of each elastic piece 4 is connected with the second connector 3, and the outer wall surface of each elastic piece 4 is used for elastically stopping against the wall of a drilled hole so that the abrasive jet is in stop-rotating fit with the drilled hole.
For example, the elastic member 4 may be in the shape of a pellet, and the elastic member 4 may be provided with four, it being understood that in other embodiments, the elastic member 4 may be provided with two, three, five, six, or the like. The four elastic members 4 may be arranged at equal intervals along the circumferential direction of the ejector main body 1. The left end of each elastic piece 4 can be fixedly connected with the peripheral wall of the first connector 2, and the right end of each elastic piece 4 can be fixedly connected with the peripheral wall of the second connector 3. The outlet of each nozzle 11 may be located in a neutral region between two elastic members 4, thereby avoiding the situation where the elastic members 4 block the nozzles 11.
The elastic member 4 may be formed by processing a material having high strength, high toughness, and high wear resistance, and for example, the elastic member 4 may be a high-strength steel sheet or the like. When the abrasive jet device is placed in the drill hole, as the diameter of the part formed by the elastic pieces 4 is slightly larger than the diameter of the drill hole of the top plate, the elastic pieces 4 can be extruded and shrink inwards in the process that the abrasive jet device moves up and down along the drill hole, so that the abrasive jet device is conveniently placed in the drill hole.
After the abrasive jet device is put in place, each elastic piece 4 can be in abutting contact with the wall of the drilled hole, when each nozzle 11 ejects high-pressure abrasive liquid, the abrasive jet device is prevented from rotating due to the reaction force generated by the high-pressure abrasive liquid due to the friction effect between the elastic piece 4 and the wall of the drilled hole, and the stability and consistency of the jet direction of the high-pressure abrasive liquid are ensured.
The frosted jet device provided by the embodiment of the invention can avoid the rotation caused by the reaction force of high-pressure water when in use, ensures the consistency and accuracy of the joint cutting direction, and improves the cutting and fracturing effects.
In some embodiments, the first connector 2 is provided with a plurality of first grooves 21, the plurality of first grooves 21 are arranged at intervals along the circumferential direction of the first connector 2, each first groove 21 extends along the axial direction of the first connector 2, and one ends of the plurality of elastic members 4 are embedded and fixed in the plurality of first grooves 21 in a one-to-one correspondence manner. The second connector 3 is provided with a plurality of second grooves 31, the second grooves 31 are distributed at intervals along the circumferential direction of the second connector 3, each second groove 31 extends along the axial direction of the second connector 3, and the other ends of the elastic pieces 4 are embedded in the second grooves 31 in a one-to-one correspondence mode.
As shown in fig. 1, the number of the first grooves 21 may be the same as the number of the elastic members 4, the number of the first grooves 21 may be four, and the four first grooves 21 may be arranged at equal intervals along the circumferential direction of the first joint 2, each of the first grooves 21 extending generally in the left-right direction. The left end of each elastic member 4 may be provided with a first flat plate portion, which may be embedded in the first groove 21 and may be fixedly connected to the first joint 2 by a fastener such as a screw.
Similarly, as shown in fig. 1, the number of the second grooves 31 may be the same as the number of the elastic members 4, the number of the second grooves 31 may be four, and the four second grooves 31 may be arranged at equal intervals along the circumferential direction of the second joint 3, each of the second grooves 31 extending generally in the left-right direction. The right end of each elastic member 4 may be provided with a second flat plate portion, which may be embedded in the second groove 31 and may be fixedly connected to the second joint 3 by a fastener such as a screw.
Therefore, on one hand, the fixing structure strength of the elastic piece 4 can be enhanced by the stop limit of the first groove 21 and the first flat plate part and the stop limit of the second groove 31 and the second flat plate part, so that the stability of the structure is ensured, and on the other hand, the elastic piece 4 is convenient to install and disassemble, and the convenience is provided for use.
In some embodiments, as shown in fig. 1, a first long hole 42 may be provided on the first flat plate portion at the left end of the elastic member 4, the first long hole 42 may extend in the same direction as the first groove 21, the groove bottom of the first groove 21 may be provided with a first hole 22, and the first long hole 42 and the first hole 22 may be used to assemble a first fastener for fixing the elastic member 4 and the first joint 2.
A second long hole 43 may be provided in the second flat plate portion at the right end of the elastic member 4, the extending direction of the second long hole 43 is identical to the extending direction of the second groove 31, the groove bottom of the second groove 31 is provided with a second hole 32, and the second long hole 43 and the second hole 32 are used for assembling a second fastener for fixing the elastic member 4 and the second joint 3.
The arrangement of the first long hole 42 and the second long hole 43 can have an effect of compensating for a machining error to some extent, that is, when the elastic member 4 is assembled, the fastener can slide in the first long hole 42 or the second long hole 43, thereby improving the convenience of fixing.
In some embodiments, as shown in fig. 1, the elastic member 4 includes an arc-shaped segment 41, where the arc-shaped segment 41 is arc-shaped, and the arc-shaped segment 41 protrudes to the outside of the jet body 1 and is used for elastically stopping against the wall of a drilled hole, and each nozzle 11 is disposed at a space between two adjacent arc-shaped segments 41. The arc sections 41 of the elastic members 4 can generally form an ellipsoid structure, and the diameters of the left end and the right end of the ellipsoid are smaller, so that the abrasive jet device can conveniently extend into or pull out of a drilling hole, and the middle part of the ellipsoid has a larger diameter, so that a friction limiting effect can be achieved.
In some embodiments, the ejector body 1 includes a first end cap 13 and a second end cap 14, the first end cap 13 and the second end cap 14 being disposed opposite to each other in the axial direction of the ejector body 1, the pipe 12 being connected between the first end cap 13 and the second end cap 14, and the plurality of nozzles 11 being provided on the pipe 12.
For example, as shown in fig. 2, each of the first and second end caps 13 and 14 may have a generally disk shape, and the first and second end caps 13 and 14 may be oppositely disposed in the left-right direction, wherein the first end cap 13 may be located at the left side of the second end cap 14. The left end of the tube 12 may be connected to a first end cap 13 and the right end of the tube 12 may be connected to a second end cap 14. Thereby, an integrated arrangement of the ejector body 1 can be achieved.
In some embodiments, as shown in fig. 2, the pipeline 12 includes a main pipe section 121 and a plurality of branch pipe sections 122, where the main pipe section 121 is connected to the first end cap 13 and is used to communicate with the liquid inlet, one ends of the plurality of branch pipe sections 122 are all connected to the main pipe section 121, the other ends of the plurality of branch pipe sections 122 are all connected to the second end cap 14, and the plurality of nozzles 11 are connected to the plurality of branch pipe sections 122 in a one-to-one correspondence. Specifically, two branch pipe sections 122 may be provided, and in this case, two nozzles 11 may be provided, and the two nozzles 11 are fixed to one branch pipe section 122, respectively.
In some embodiments, the pipeline 12 and each nozzle 11 can bear abrasive high-pressure water (high-pressure abrasive liquid) with pressure exceeding 50MPa, so that the use requirement of structural strength is met.
In some embodiments, as shown in fig. 2, each branch pipe section 122 includes a radial section 1221 and an axial section 1222, wherein the radial section 1221 extends along a radial direction of the ejector body 1 and is connected between the axial sections 1222 of the main pipe section 121, and the axial sections 1222 extend along an axial direction (left-right direction) of the ejector body 1.
The direction of the spray of the nozzles 11 on the same branch pipe section 122 is opposite to the direction of the flow of the fluid in the radial section 1221 of the branch pipe section 122, for example, as shown in fig. 2, the fluid in the radial section 1221 may flow radially outwards of the ejector body, while the fluid in the nozzles 11 connected to the same axial section 1222 as the radial section 1221 may flow radially inwards of the ejector body, as shown by the black dashed arrow in fig. 2.
Therefore, the eccentric arrangement of each axial section 1222 can be realized, so that the nozzle 11 can utilize the inner space surrounded by a plurality of axial sections 1222, thereby playing a role in reducing the diameter of the jet device, avoiding the condition that the diameter of the drilled hole is larger in the prior art, reducing the construction process and difficulty of drilling and reducing the construction cost.
It should be noted that, the end of each axial section 1222 connected to the second end cap 14 may be a closed structure, and even if two circular holes are reserved on the second end cap 14 due to the processing consideration and the second end cap 14 is in communication with the axial section 1222, as shown in fig. 2, the two circular holes located on the second end cap 14 need to be sealed and plugged later.
In some embodiments, as shown in fig. 2, the first end cap 13 is provided with a first cylindrical cavity 131, the first cylindrical cavity 131 may be integrally formed on the right side of the first end cap 13, and the first cylindrical cavity 131 may be a cylindrical cavity, a portion of the first connector 2 is assembled in the first cylindrical cavity 131, for example, the first cylindrical cavity 131 may be provided with internal threads, and a portion of the first connector 2 may be threadedly assembled in the first cylindrical cavity 131.
The second end cover 14 is provided with a second cylindrical cavity 141, the second cylindrical cavity 141 may be integrally formed at the left side of the second end cover 14, and the second cylindrical cavity 141 may be a cylindrical cavity, a part of the second connector 3 is assembled in the second cylindrical cavity 141, for example, an internal thread may be provided in the second cylindrical cavity 141, and a part of the second connector 3 may be assembled in the second cylindrical cavity 141.
The main pipe section 121 is communicated with the first cylindrical cavity 131, the right end of the first joint 2 can be provided with a cylindrical portion, the cylindrical portion can be assembled in the first cylindrical cavity 131 in a threaded manner, the right end portion of the first cylindrical cavity 131 can be provided with an overflow hole, the main pipe section 121 can be communicated with the right end hole of the overflow hole, and the liquid inlet hole can be arranged in the cylindrical portion and extend along the axis of the cylindrical portion. After the cylindrical portion is screw-fitted in the first cylindrical cavity 131, the liquid inlet hole may be directly communicated with the left aperture of the overflow hole.
The main pipe section 121, the first cylindrical chamber 131 and the second cylindrical chamber 141 are coaxially arranged, and the plurality of nozzles 11 are located between the first cylindrical chamber 131 and the second cylindrical chamber 141. Thereby be favorable to reducing centrifugal effect, also make the focus of dull polish ejector can be located the middle part generally, be favorable to guaranteeing overall structure distribution's homogeneity and stability in use.
In some embodiments, the ejector body 1 includes a cylinder 15, the cylinder 15 being connected between the first end cap 13 and the second end cap 14, for example, as shown in fig. 2, the cylinder 15 may be generally cylindrical, the outer peripheral edge of the first end cap 13 may be sealingly connected with the left side edge of the cylinder 15, and the outer peripheral edge of the second end cap 14 may be sealingly connected with the right side edge of the cylinder 15. Thus, the first end cap 13, the second end cap 14, and the cylinder 15 can be made to substantially enclose a relatively sealed space.
The first cylindrical cavity 131, the second cylindrical cavity 141, the pipeline 12 and the plurality of nozzles 11 are all generally located in a sealed space surrounded by the cylinder 15, a plurality of holes are formed in the cylinder 15, the plurality of nozzles 11 are exposed out of the plurality of holes one by one, and the outer end part of each nozzle 11 can be connected with the cylinder 15 in a sealing manner, so that the overhanging condition of the nozzles 11 can be avoided, and the stability of the structure is ensured.
Therefore, on one hand, the modularization of the ejector main body 1 can be realized, the integral structural strength can be enhanced, and on the other hand, the exposure of parts can be avoided, so that the protection effect can be achieved, and the use stability is ensured.
In some embodiments, the spray direction of at least two nozzles 11 forms an included angle of 90 degrees. For example, as shown in fig. 2, the nozzles 11 may be provided only two, and the ejection directions of the two nozzles 11 may be 90 degrees. Thus, the joint cutting operation in two vertical directions can be realized.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.

Claims (7)

1. A sanding jet comprising:
the ejector comprises an ejector main body, wherein a runner and a plurality of nozzles are arranged in the ejector main body, the nozzles are communicated with the runner, and the injection directions of at least two nozzles form included angles in the circumferential direction of the ejector main body;
the ejector body is connected between the first connector and the second connector, one of the first connector and the second connector is provided with a liquid inlet, and the liquid inlet is communicated with the flow channel;
the elastic pieces are arranged at intervals along the circumferential direction of the ejector main body, each nozzle is exposed out of the interval between two adjacent elastic pieces, one end of each elastic piece is connected with the first connector, the other end of each elastic piece is connected with the second connector, and the outer wall surface of each elastic piece is used for elastically abutting against the wall of a drilled hole so that the abrasive ejector is in anti-rotation fit in the drilled hole;
the ejector body includes:
a first end cover and a second end cover, which are oppositely arranged in the axial direction of the ejector body;
the pipeline is connected between the first end cover and the second end cover, the nozzles are arranged on the pipeline, and the inner holes of the pipeline form the flow channel;
the pipeline comprises:
the main pipe section is connected with the first end cover and is used for communicating with the liquid inlet;
the plurality of branch pipe sections are communicated with the main pipe section at one ends, the second end covers are connected with the other ends of the plurality of branch pipe sections, and the plurality of nozzles are correspondingly connected to the plurality of branch pipe sections one by one;
the branch pipe section comprises a radial section and an axial section, the radial section extends along the radial direction of the ejector main body and is connected between the axial sections of the main pipe section, the axial section extends along the axial direction of the ejector main body, and the injection direction of the nozzles on the same branch pipe section is opposite to the flow direction of the fluid in the radial section of the branch pipe section.
2. The abrasive jet device according to claim 1, wherein the first connector is provided with a plurality of first grooves, the first grooves are arranged at intervals along the circumferential direction of the first connector, each first groove extends along the axial direction of the first connector, and one end of each elastic piece is embedded and fixed in the first grooves in a one-to-one correspondence manner;
the second connector is provided with a plurality of second grooves, the second grooves are distributed at intervals along the circumferential direction of the second connector, each second groove extends along the axial direction of the second connector, and the other ends of the elastic pieces are embedded in the second grooves in a one-to-one correspondence mode.
3. The abrasive jet device according to claim 2, wherein one end of the elastic member is provided with a first long hole, the extending direction of the first long hole is consistent with that of the first groove, the bottom of the first groove is provided with a first hole, and the first long hole and the first hole are used for assembling a first fastener for fixing the elastic member and the first joint;
the other end of the elastic piece is provided with a second long hole, the extending direction of the second long hole is consistent with that of the second groove, the bottom of the second groove is provided with a second hole, and the second long hole and the second hole are used for assembling a second fastener for fixing the elastic piece and the second joint.
4. The abrasive jet of claim 2, wherein the resilient member comprises arcuate segments projecting outwardly of the jet body for resilient abutment with the bore wall, each of the nozzles being disposed at a spacing between adjacent two of the arcuate segments.
5. The abrasive jet implement of claim 1, wherein the first end cap has a first cylindrical cavity, a portion of the first connector fits within the first cylindrical cavity, the second end cap has a second cylindrical cavity, a portion of the second connector fits within the second cylindrical cavity, the main pipe section communicates with the first cylindrical cavity, and the main pipe section, the first cylindrical cavity, and the second cylindrical cavity are coaxially disposed, with a plurality of the nozzles positioned between the first cylindrical cavity and the second cylindrical cavity.
6. The abrasive jet of claim 5, wherein the jet body comprises a barrel connected between the first end cap and the second end cap, the first cylindrical cavity, the second cylindrical cavity, the conduit, the plurality of nozzles are all located in the barrel, and the barrel is provided with a plurality of openings from which the plurality of nozzles are exposed one by one.
7. The abrasive jet device of any one of claims 1-6, wherein the spray directions of at least two of the spray nozzles form an included angle of 90 degrees.
CN202410045428.1A 2024-01-12 2024-01-12 Frosted jet device Active CN117552785B (en)

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