CN111911725A - Rotary joint for connecting water cutting equipment with high-pressure water pipe - Google Patents
Rotary joint for connecting water cutting equipment with high-pressure water pipe Download PDFInfo
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- CN111911725A CN111911725A CN202010812430.9A CN202010812430A CN111911725A CN 111911725 A CN111911725 A CN 111911725A CN 202010812430 A CN202010812430 A CN 202010812430A CN 111911725 A CN111911725 A CN 111911725A
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- rotating shaft
- sealing
- pressure water
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- shell
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 223
- 238000005520 cutting process Methods 0.000 title claims abstract description 95
- 238000007789 sealing Methods 0.000 claims abstract description 97
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
- F16L27/0837—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements being bends
- F16L27/0845—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements being bends forming an angle of 90 degrees
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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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/087—Joints with radial fluid passages
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to the technical field of water cutting, and provides a rotary joint for connecting a water cutting device with a high-pressure water pipe, which comprises a shell assembly with a hollow cavity, a rotating shaft with a through hole and a sealing assembly, wherein the rotating shaft is provided with a through hole; one end of the shell component is used for being connected with the water inlet end of the high-pressure water pipe; the rotating shaft penetrates through the hollow cavity, one end of the rotating shaft extends out of the other end of the shell assembly, and the end of the rotating shaft extending out of the shell assembly is used for being connected with the water cutting head; the rotating shaft is clamped on the inner wall of the shell assembly through the steps arranged on the rotating shaft and can rotate relative to the shell assembly; the outer wall of the rotating shaft and the inner wall of the hollow cavity are in sealing butt joint through a sealing assembly sleeved on the outer wall of the rotating shaft. When the water cutting head connected with the rotating shaft rotates, the rotating shaft can be driven to rotate at the same time, so that the rotating shaft rotates in the hollow cavity, the metal hard pipe is converted into a pipeline capable of rotating relatively, and the high-pressure water is conveyed while the water cutting head rotates.
Description
Technical Field
The invention relates to the technical field of water cutting, in particular to a rotary joint for connecting a water cutting device with a high-pressure water pipe.
Background
The water cutting is characterized in that no thermal stress exists, the cut object does not generate chemical change and deformation, particularly five-axis water cutting can be carried out, and one-time cutting processing of any curve can be carried out on any material, so that the water cutting method is widely applied to cutting in various industries. The pipeline that the high pressure pump carried high pressure water to the cutting head is the metal hard tube, and itself can not distort or rotary motion, when five water cutting tool heads carried out the three-dimensional removal cutting to the work piece, its whole of metal hard tube can not be along with cutting tool head rotary motion.
Disclosure of Invention
The invention provides a rotary joint for connecting a high-pressure water pipe with water cutting equipment, aiming at the problems in the prior art, and the rotary joint is used for solving the technical problem that a metal hard pipe for conveying high-pressure water to a cutting head cannot rotate and move along with a cutting tool bit in the prior art.
The technical scheme provided by the invention for the technical problem is as follows:
the invention provides a rotary joint for connecting a water cutting device with a high-pressure water pipe, which comprises a shell assembly with a hollow cavity, a rotating shaft with a through hole and a sealing assembly, wherein the rotating shaft is provided with a through hole;
one end of the shell assembly is used for being connected with the water inlet end of the high-pressure water pipe;
the rotating shaft penetrates through the hollow cavity, one end of the rotating shaft extends out of the other end of the shell assembly, and one end of the rotating shaft extending out of the shell assembly is used for being connected with the water cutting head;
the rotating shaft is clamped on the inner wall of the shell assembly through the steps arranged on the rotating shaft and can rotate relative to the shell assembly;
the outer wall of the rotating shaft and the inner wall of the hollow cavity are in sealing butt joint through a sealing assembly sleeved on the outer wall of the rotating shaft.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, the rotary joint further comprises a positioning assembly arranged in the hollow cavity, the positioning assembly is connected with the inner wall of the shell assembly, the rotating shaft penetrates through the positioning assembly, and the rotating shaft is in clearance fit with the positioning assembly.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, the positioning assembly comprises a first positioning piece and a second positioning piece which are respectively arranged on two sides of the step of the rotating shaft, a first gap is formed between the inner wall of the first positioning piece and the outer wall of the rotating shaft, and a second gap is formed between the inner wall of the second positioning piece and the outer wall of the rotating shaft;
the sealing assembly comprises a first sealing element for sealing high-pressure water, and the first sealing element is arranged on one side, away from the step, of the first positioning element and is abutted against the first positioning element;
the sealing assembly further comprises a second sealing element used for sealing external sundries, and the second sealing element is arranged on one side, far away from the step, of the second positioning element and is abutted against the second positioning element.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, one end, close to the first positioning piece, of the first sealing piece is provided with the outer cone portion which is convex outwards, one end, close to the first sealing piece, of the first positioning piece is provided with the inner cone portion which is concave inwards and matched with the outer cone portion, and the outer cone portion is arranged in the inner cone portion.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, the first sealing element comprises a sealing element main body, a groove is formed in the outer wall of the sealing element main body in a surrounding mode, a sealing ring protruding out of the groove is arranged in the groove, and the sealing element main body is abutted to the first positioning element.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, the first positioning piece is provided with at least one overflow hole, the shell assembly is provided with observation holes, and each observation hole is communicated with at least one overflow hole.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, the periphery of the shell assembly is further provided with an O-shaped sealing ring, and the observing hole is sealed and used for preventing external sundries from entering the hollow cavity.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, the rotary joint further comprises a thrust bearing which is sleeved on the outer wall of the rotating shaft and used for supporting axial thrust along the rotating shaft, and the thrust bearing is arranged between the supporting table on the inner wall of the shell assembly and the step of the rotating shaft.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, the shell assembly comprises a first upper shell and a first lower shell which are detachably connected;
the top end of the first upper shell is provided with a first water inlet hole and a first connecting part used for being connected with a water inlet end of a high-pressure water pipe, and the first water inlet hole and the rotating shaft are positioned on the same axis and are communicated with the through hole of the rotating shaft;
one end of the rotating shaft, which is far away from the first water inlet hole, extends out of the first lower shell.
According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, the shell assembly comprises a second upper shell and a second lower shell which are detachably connected;
the second upper shell comprises an upper shell body and an adapter, the adapter is sleeved on the upper shell body, a second connecting part used for being connected with a water inlet end of a high-pressure water pipe is arranged on the adapter, the upper shell body is provided with a second water inlet hole and a third water inlet hole vertically communicated with the second water inlet hole, and the second water inlet hole and the rotating shaft are located on the same axis and communicated with the through hole;
one end of the rotating shaft, which is far away from the second water inlet hole, extends out of the second lower shell.
The invention according to the scheme has the advantages that:
according to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, when the water cutting head connected with the rotary shaft rotates, the rotary shaft connected with the water cutting head can be driven to rotate at the same time, so that the rotary shaft rotates in the hollow cavity, a metal hard pipe is converted into a pipeline capable of rotating relatively, and the rotary joint is capable of conveying high-pressure water and moving along with the rotation of the water cutting head; the rotary joint provided by the invention is simple in structure and small in size, and is convenient to install in a pipeline of a five-axis water cutting head; the sealing assembly is arranged to seal the hollow cavity and prevent high-pressure water from entering the hollow cavity.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a first schematic structural view of a rotary joint for connecting a high-pressure water pipe of a water cutting device according to an embodiment of the present invention;
FIG. 2 is a first schematic sectional view of a rotary joint for connecting a high-pressure water pipe to a water cutting device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram II of a rotary joint for connecting a high-pressure water pipe to a water cutting device according to an embodiment of the invention;
fig. 4 is a schematic sectional structure view of a rotary joint for connecting a high-pressure water pipe to a water cutting device according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
Detailed Description
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
The invention aims to solve the technical problems that a pipeline for conveying high-pressure water to a cutting head by a high-pressure pump in the prior art is a metal hard pipe, the metal hard pipe cannot be twisted or rotationally moved, and when a five-axis water cutting head performs three-dimensional moving cutting on a workpiece, the whole metal hard pipe cannot rotationally move along with a cutting head. The core idea is as follows: the rotary joint for connecting the water cutting equipment with the high-pressure water pipe comprises a shell assembly, a rotating shaft and a sealing assembly, wherein the shell assembly is provided with a hollow cavity; one end of the shell assembly is used for being connected with the water inlet end of the high-pressure water pipe; the rotating shaft penetrates through the hollow cavity, one end of the rotating shaft extends out of the other end of the shell assembly, and one end of the rotating shaft extending out of the shell assembly is used for being connected with the water cutting head; the rotating shaft is clamped on the inner wall of the shell assembly through the steps arranged on the rotating shaft and can rotate relative to the shell assembly; the outer wall of the rotating shaft and the inner wall of the hollow cavity are in sealing butt joint through a sealing assembly sleeved on the outer wall of the rotating shaft. According to the rotary joint for connecting the water cutting equipment with the high-pressure water pipe, when the water cutting head connected with the rotary shaft rotates, the rotary shaft connected with the water cutting head can be driven to rotate at the same time, so that the rotary shaft rotates in the hollow cavity, a metal hard pipe is converted into a pipeline capable of rotating relatively, and the rotary joint is capable of conveying high-pressure water and moving along with the rotation of the water cutting head; the rotary joint for connecting the water cutting equipment with the high-pressure water pipe is simple in structure, small in size and convenient to install in a pipeline of a five-axis water cutting head; the sealing assembly is arranged to seal the hollow cavity and prevent high-pressure water from entering the hollow cavity.
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 in combination with fig. 2, the present embodiment provides a rotary joint 100 for a water cutting apparatus to connect to a high pressure water pipe, including a housing assembly 10 having a hollow cavity 11, a rotary shaft 20 having a through hole 21, and a sealing assembly 30; one end of the shell assembly 10 is used for being connected with a water inlet end of a high-pressure water pipe; the rotating shaft 20 is arranged in the hollow cavity 11 in a penetrating manner, one end of the rotating shaft extends out of the other end of the shell assembly 10, and one end of the rotating shaft extending out of the shell assembly 10 is used for being connected with a water cutting head; the rotating shaft 20 is clamped on the inner wall of the housing assembly 10 through a step 22 arranged on the rotating shaft, and can rotate relative to the housing assembly 10; the outer wall of the rotating shaft 20 and the inner wall of the hollow cavity 11 are in sealing abutting connection through a sealing assembly 30 sleeved on the outer wall of the rotating shaft 20.
The working principle of the rotary joint 100 for connecting a water cutting device with a high-pressure water pipe provided by the embodiment can be as follows:
because the housing assembly 10 has the hollow cavity 11, the rotating shaft 20 with the through hole 21 is disposed in the hollow cavity 11 and is clamped on the inner wall of the housing assembly 10 through the step 22 of the rotating shaft 20, when one end of the housing assembly 10 is connected with the water inlet end of the high-pressure water pipe, the high-pressure water can flow through the through hole 21 of the rotating shaft 20, and because the end of the rotating shaft 20 extending out of the housing assembly 10 is connected with the water cutting head, the high-pressure water flowing through the through hole 21 can flow to the water cutting head. When the water cutting head is rotatory, the rotation axis 20 that is connected with the water cutting head also can be driven simultaneously and rotate for rotation axis 20 is at cavity 11 internal rotation, thereby realizes changing the metal hard tube into relative pivoted pipeline, realizes following the water cutting head rotary motion when carrying high pressure water. The sealing assembly 30 is provided to seal the hollow cavity 11 and prevent high pressure water from entering the hollow cavity 11.
The rotary joint 100 for connecting a water cutting device with a high-pressure water pipe provided by the embodiment has at least the following beneficial effects:
(1) the rotary joint 100 for connecting a high-pressure water pipe to a water cutting device provided by the embodiment has the advantages that when the water cutting head connected with the rotary shaft 20 rotates, the rotary shaft 20 connected with the water cutting head can also be driven to rotate at the same time, so that the rotary shaft 20 rotates in the hollow cavity 11, a metal hard pipe is converted into a pipeline capable of rotating relatively, and the rotary joint can move along with the rotation of the water cutting head while conveying high-pressure water.
(2) The rotary joint 100 for connecting the water cutting equipment with the high-pressure water pipe, provided by the embodiment, is simple in structure, small in size and convenient to install in a pipeline of a five-axis water cutting head.
(3) The sealing assembly 30 is provided to seal the hollow cavity 11 and prevent high pressure water from entering the hollow cavity 11.
In one embodiment, the rotary joint 100 further includes a positioning component 40 disposed in the hollow cavity 11, the positioning component 40 is connected to the inner wall of the housing component 10, the rotating shaft 20 is disposed through the positioning component 40, and the rotating shaft 20 is in clearance fit with the positioning component 40. The positioning assembly 40 is arranged in the hollow cavity 11 and sleeved outside the rotating shaft 20, the rotating shaft 20 is in clearance fit with the positioning assembly 40, positioning and guiding of the rotating shaft 20 are achieved, the rotating shaft 20 can be prevented from deflecting, and therefore the rotating shaft 20 can be ensured to run stably under the driving of the water cutting head.
In one embodiment, the positioning assembly 40 includes a first positioning member 41 and a second positioning member 42 respectively disposed at two sides of the step 22 of the rotating shaft 20, wherein a first gap 43 is formed between an inner wall of the first positioning member 41 and an outer wall of the rotating shaft 20, and a second gap 44 is formed between an inner wall of the second positioning member 42 and the outer wall of the rotating shaft 20. The first positioning part 41 and the second positioning part 42 are respectively arranged on two sides of the step 22 of the rotating shaft 20, and the rotating shaft 20 is positioned and guided by the matching of the first positioning part 41 and the second positioning part 42, so that the rotating shaft 20 can rotate in the hollow cavity 11 more stably under the driving of the water cutting head. It should be understood that the positioning assembly 40 is not limited to include the first positioning member 41 and the second positioning member 42 disposed on both sides of the step 22, and may be disposed at other positions and numbers of positioning members, which are not limited herein.
The sealing assembly 30 comprises a first sealing member 31 for sealing high-pressure water, and the first sealing member 31 is arranged on one side of the first positioning member 41 far away from the step 22 and is abutted against the first positioning member 41; the sealing assembly 30 further includes a second sealing member 32 for sealing external impurities, and the second sealing member 32 is disposed on a side of the second positioning member 42 away from the step 22 and abuts against the second positioning member 42. The first sealing member 31 and the second sealing member 32 are respectively disposed at two ends of the hollow cavity 11, the first sealing member 31 is disposed to prevent high-pressure water from entering the middle-lower portion of the hollow cavity 11, and the second sealing member 32 is disposed to prevent external impurities from entering the hollow cavity 11, so that abrasion of components in the hollow cavity 11 is avoided, and the rotating shaft 20 is operated stably.
In one embodiment, the second seal 32 is Y-shaped in cross-section.
In one embodiment, an end of the first sealing member 31 close to the first positioning member 41 is provided with an outer cone 311 which is convex, an end of the first positioning member 41 close to the first sealing member 31 is provided with an inner cone 411 which is concave and matched with the outer cone 311, and the outer cone 311 is arranged in the inner cone 411. The outer cone 311 that is the evagination that sets up on first sealing member 31 is connected in the inner cone 411 that is the indent that sets up on first locating element 41, and the external diameter of outer cone 311 and the internal diameter looks adaptation of inner cone 411, and can closely cooperate, under the axial impulsive force of high pressure water, first sealing member 31 encircles the formula sealedly to rotating shaft 20 automatic compensation, interior pyramid 411 can assist outer cone 311 to provide to rotating shaft 20 to encircle the thrust simultaneously, and then improve the sealed effect of first sealing member 31, and prolong the sealed life of first sealing member 31, reduce the number of times of changing first sealing member 31, and then practice thrift the cost.
Optionally, the first positioning element 41 includes a positioning fixing seat 412 and a positioning tube 413, the positioning fixing seat 412 and the positioning tube 413 are of an integrated structure, the inner cone 411 of the concave portion is disposed on the hollow tube 413, the edge of the positioning fixing seat 412 is supported and fixed by the boss 12 on the inner wall of the housing assembly 10, and then the first positioning element 41 is stably fixed in the hollow cavity 11.
In one embodiment, the first sealing member 31 includes a sealing member main body 312, a groove 3121 is formed around an outer wall of the sealing member main body 312, a sealing ring 313 protruding from the groove 3121 is disposed in the groove 3121, and the sealing member main body 312 abuts against the first positioning member 41. The sealing ring 313 is provided to further ensure a sealing effect of sealing the high pressure water when the rotary shaft 20 rotates with respect to the hollow chamber 11, thereby extending the sealing life of the first sealing member 31. Optionally, the number of the sealing ring 313 and the groove 3121 is one or more. Optionally, the number of the sealing rings 313 and the grooves 3121 is two. It should be understood that the number of the sealing rings 313 and the grooves 3121 is not limited to the above case, and may be other cases, which are not limited herein. Optionally, an outer cone 311 is provided at an end of the seal body 312 near the first retainer 41.
In one embodiment, the first positioning member 41 has at least one overflow hole 414 formed therein, the housing assembly 10 has a viewing hole 13 formed therein, and each viewing hole 13 is communicated with the at least one overflow hole 414. The arrangement of the observation hole 13 and the overflow hole 414 is used to judge whether the first seal member 31 has failed, and when water leakage is observed from the observation hole 13, it can be judged that the first seal member 31 has failed and needs to be replaced with a new one 31.
Optionally, the overflow hole 414 is disposed on the positioning fixing seat 412. Optionally, each observation hole 13 is communicated with two overflow holes, and a first overflow hole 4141 of the two overflow holes is communicated with the upper surface of the positioning fixing seat 412, and a second overflow hole 4142 is communicated with the hollow cavity 11, so that the drainage conditions in multiple directions can be collected.
Alternatively, the number of observation holes 13 is two, and two of the observation holes 13 are centrosymmetric with respect to the center of the rotary joint 100, and correspondingly, the number of overflow holes 414 is four.
It should be understood that the number of the observation holes 13 and the overflow holes 414 is not limited to the above case, and other cases are also possible, and is not limited herein.
In one embodiment, an O-ring 19 is further disposed on the periphery of the housing assembly 10 and seals the observation hole 13 to prevent foreign objects from entering the hollow cavity 11, when the first sealing ring 31 fails, the high-pressure water in the hollow cavity 11 can flush the O-ring 19 through the observation hole 13, and the user can still observe the overflow condition through the observation hole 13, and when the first sealing ring 31 does not fail, the user can prevent foreign objects from entering the hollow cavity 11.
In one embodiment, the rotary joint 100 further includes a thrust bearing 50 sleeved on an outer wall of the rotary shaft 20 and used for supporting an axial thrust along the rotary shaft 20, and the thrust bearing 50 is disposed between the support platform 14 on the inner wall of the housing assembly 10 and the step 22 of the rotary shaft 20. The thrust bearing 50 is supported and fixed by the support base 14 on the inner wall of the housing unit 10, and the thrust bearing 50 is provided below the step 22 and abuts against the lower surface of the step 22, and receives the axial thrust of the high-pressure water by the thrust bearing 50.
In one embodiment, the housing assembly 10 includes a first upper housing 15 and a first lower housing 16 that are removably connected; the top end of the first upper shell 15 is provided with a first water inlet hole 151 and a first connecting part 152 for connecting with the water inlet end of a high-pressure water pipe, and the first water inlet hole 151 and the rotating shaft 20 are positioned on the same axis and communicated with the through hole 21 of the rotating shaft 20; one end of the rotating shaft 20 away from the first water inlet 151 extends out of the first lower housing 16.
When the first connection portion 52 is connected to the water inlet end of the high pressure water pipe, the high pressure water may directly flow to the through hole 21 of the rotary shaft 20 through the first water inlet hole 151 located on the same axis as the rotary shaft 20, and then flow to the water cutting head connected to the rotary shaft 20, thereby performing water cutting on the workpiece.
Optionally, the first upper shell 15 and the first lower shell 16 are connected through a screw thread, and the connection mode not only enables the first upper shell 15 and the first lower shell 16 to be firmly connected, but also is convenient to disassemble and assemble, and when parts in the hollow cavity 11 need to be replaced, the parts are convenient to replace.
Optionally, the first connection portion 152 is in threaded connection with the water inlet end of the high-pressure water pipe, and the connection manner of the first connection portion 152 is not only firm in connection with the water inlet end of the high-pressure water pipe, but also convenient to disassemble and assemble.
Optionally, one end of the first water inlet hole 151 near the first connection portion 152 is provided with a bell mouth for performing taper sealing when connecting a high-pressure hard pipe.
Referring to fig. 3 in conjunction with fig. 4, in another embodiment, the housing assembly 10 includes a second upper housing 17 and a second lower housing 18 detachably connected; the second upper shell 17 comprises an upper shell main body 171 and an adapter 172, the adapter 172 is sleeved on the upper shell main body 171, a second connecting part 1721 used for being connected with a water inlet end of a high-pressure water pipe is arranged on the adapter 172, the upper shell main body 171 is provided with a second water inlet 1711 and a third water inlet 1712 vertically communicated with the second water inlet 1711, and the second water inlet 1711 and the rotating shaft 20 are positioned on the same axis and communicated with the through hole 21; one end of the rotating shaft 20 far away from the second water inlet 1711 extends out of the second lower housing 18. When the second connecting portion 1721 is connected with the water inlet end of the high-pressure water pipe, the high-pressure water flows from the third water inlet 1712 to the second water inlet 1711 perpendicular to the third water inlet 1712, because the second water inlet 1711 is located on the same axis as the through hole 21 of the rotating shaft 20, the high-pressure water flows directly into the through hole 21 through the second water inlet 1711, and then flows into the water cutting head connected with the rotating shaft 20, so that the water cutting operation on the workpiece is realized, that is, when the high-pressure water pipe and the water cutting head are in a right-angle direction, the adapter 172 needs to be added, placed on the upper shell main body 171 and connected with the upper shell main body 171.
Optionally, the upper case main body 171 is connected to the second lower case 18 through a screw thread, and the connection mode not only enables the upper case main body 171 to be firmly connected to the second lower case 18, but also is convenient to disassemble and assemble, and when parts in the hollow cavity 11 need to be replaced, the parts are convenient to replace.
Optionally, the outer wall of the upper case main body 171 is provided with at least one flat portion 1713, and when the upper case main body 171 is connected to the second lower case 18, the flat portion 1713 can be used to clamp the wrench to lock the second lower case 18. Optionally, the number of the flat portions 1713 is two, and the flat portions are symmetrically arranged.
Optionally, the second connecting portion 1721 is in threaded connection with the water inlet end of the high-pressure water pipe, and the connecting manner of the second connecting portion 1721 is firm in connection with the water inlet end of the high-pressure water pipe and is convenient to disassemble and assemble.
Optionally, one end of the third water inlet 1712 close to the second connecting portion 1721 is provided with a bell mouth for taper sealing when connecting a high-pressure hard pipe.
Optionally, the outer wall of the rotating shaft 20 extending out of the first lower housing 16 or the second lower housing 18 is provided with a reverse thread 23, and is connected with the water cutting head through an additional bolt.
Optionally, the end of the rotating shaft 20 extending out of the first lower housing 16 or the second lower housing 18 is provided with a taper 24 for taper sealing when connecting the water cutting head.
In summary, the rotary joint 100 for connecting a water cutting device with a high-pressure water pipe provided by the embodiment has at least the following beneficial effects:
(1) when the water cutting head rotates, the rotating shaft 20 connected with the water cutting head can also be driven to rotate at the same time, so that the rotating shaft 20 rotates in the hollow cavity 11, the metal hard pipe is converted into a pipeline capable of rotating relatively, and the rotating movement of the water cutting head is realized while high-pressure water is conveyed; the rotary joint 100 that the water cutting equipment that this embodiment provided included simple structure, and small, conveniently install in the pipeline of five water cutting heads.
(2) The sealing assembly 30 is arranged to seal the hollow cavity 11, so that high-pressure water can be prevented from entering the hollow cavity 11, the first sealing element 31 has automatic compensation encircling sealing to prolong the service life of the hollow cavity, and the second sealing element 32 and the O-shaped sealing ring 19 can be used for preventing external impurities from entering the hollow cavity.
(3) The arrangement of the observation hole 13 and the overflow hole 414 is used to judge whether the first sealing member 31 included in the sealing assembly 30 is failed, and when water is observed to leak out from the observation hole 13, it can be judged that the first sealing member 31 has failed and needs to be replaced with a new one 31.
(4) The positioning assembly 40 is arranged in the hollow cavity 11 and sleeved outside the rotating shaft 20, the rotating shaft 20 is in clearance fit with the positioning assembly 40, positioning and guiding of the rotating shaft 20 are achieved, the rotating shaft 20 can be prevented from deflecting, and therefore the rotating shaft 20 can be ensured to run stably under the driving of the water cutting head.
(5) The thrust bearing 50 is supported and fixed by the support base 14 on the inner wall of the housing unit 10, and the thrust bearing 50 is provided below the step 22 and abuts against the lower surface of the step 22, and receives the axial thrust of the high-pressure water by the thrust bearing 50.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A swivel (100) for a water cutting apparatus for connecting high pressure water lines, characterized by: comprises a shell component (10) with a hollow cavity (11), a rotating shaft (20) with a through hole (21) and a sealing component (30);
one end of the shell assembly (10) is connected with the water inlet end of the high-pressure water pipe;
the rotating shaft (20) penetrates through the hollow cavity (11), one end of the rotating shaft extends out of the other end of the shell assembly (10), and one end of the rotating shaft extending out of the shell assembly (10) is used for being connected with a water cutting head;
the rotating shaft (20) is clamped on the inner wall of the shell assembly (10) through a step (22) arranged on the rotating shaft and can rotate relative to the shell assembly (10);
the outer wall of the rotating shaft (20) is in sealing butt joint with the inner wall of the hollow cavity (11) through a sealing component (30) sleeved on the outer wall of the rotating shaft (20).
2. The rotary joint for a water cutting apparatus to connect a high pressure water pipe as claimed in claim 1, wherein: rotary joint (100) are still including locating component (40) in cavity (11), locating component (40) with the inner wall of casing subassembly (10) is connected, rotation axis (20) wear to locate locating component (40), just rotation axis (20) with locating component (40) clearance fit.
3. The rotary joint for a water cutting apparatus to connect a high pressure water pipe as claimed in claim 2, wherein: the positioning assembly (40) comprises a first positioning piece (41) and a second positioning piece (42) which are respectively arranged on two sides of a step (22) of the rotating shaft (20), a first gap (43) is formed between the inner wall of the first positioning piece (41) and the outer wall of the rotating shaft (20), and a second gap (44) is formed between the inner wall of the second positioning piece (42) and the outer wall of the rotating shaft (20);
the sealing assembly (30) comprises a first sealing element (31) for sealing high-pressure water, and the first sealing element (31) is arranged on one side, away from the step (22), of the first positioning element (41) and is abutted against the first positioning element (41);
the sealing assembly (30) further comprises a second sealing element (32) used for sealing external sundries, and the second sealing element (32) is arranged on one side, away from the step (22), of the second positioning element (42) and is abutted to the second positioning element (42).
4. A swivel for a water cutting apparatus connecting a high pressure water pipe as claimed in claim 3, wherein: one end, close to the first positioning piece (41), of the first sealing piece (31) is provided with an outer cone portion (311) which is convex outwards, one end, close to the first sealing piece (31), of the first positioning piece (41) is provided with an inner cone portion (411) which is concave inwards and matched with the outer cone portion (311), and the outer cone portion (311) is arranged in the inner cone portion (411).
5. A swivel for a water cutting apparatus connecting a high pressure water pipe as claimed in claim 3, wherein: the first sealing element (31) comprises a sealing element main body (312), a groove (3121) is annularly arranged on the outer wall of the sealing element main body (312), a sealing ring (313) protruding out of the groove (3121) is arranged in the groove (3121), and the sealing element main body (312) is abutted to the first positioning element (41).
6. A swivel for a water cutting apparatus connecting a high pressure water pipe as claimed in claim 3, wherein: the first positioning piece (41) is provided with at least one overflow hole (414), the shell assembly (10) is provided with observation holes (13), and each observation hole (13) is communicated with the at least one overflow hole (414).
7. The rotary joint for a water cutting apparatus to connect a high pressure water pipe as claimed in claim 6, wherein: an O-shaped sealing ring (19) is further arranged on the periphery of the shell component (10) and used for sealing the observation hole (13) and preventing external impurities from entering the hollow cavity (11).
8. The rotary joint for a water cutting apparatus to connect a high pressure water pipe as claimed in claim 1, wherein: the rotary joint (100) further comprises a thrust bearing (50) sleeved on the outer wall of the rotary shaft (20) and used for supporting axial thrust along the rotary shaft (20), and the thrust bearing (50) is arranged between the support table (14) on the inner wall of the shell assembly (10) and the step (22) of the rotary shaft (20).
9. The rotary joint for a water cutting apparatus to connect a high pressure water pipe as claimed in claim 1, wherein: the shell assembly (10) comprises a first upper shell (15) and a first lower shell (16) which are detachably connected;
the top end of the first upper shell (15) is provided with a first water inlet hole (151) and a first connecting part (152) used for being connected with the water inlet end of a high-pressure water pipe, and the first water inlet hole (151) and the rotating shaft (20) are positioned on the same axis and are communicated with a through hole (21) of the rotating shaft (20);
one end of the rotating shaft (20) far away from the first water inlet hole (151) extends out of the first lower shell (16).
10. The rotary joint for a water cutting apparatus to connect a high pressure water pipe as claimed in claim 1, wherein: the shell assembly (10) comprises a second upper shell (17) and a second lower shell (18) which are detachably connected;
the second upper shell (17) comprises an upper shell body (171) and an adapter (172), the adapter (172) is sleeved on the upper shell body (171), a second connecting part (1721) used for being connected with a water inlet end of a high-pressure water pipe is arranged on the adapter (172), the upper shell body (171) is provided with a second water inlet hole (1711) and a third water inlet hole (1712) vertically communicated with the second water inlet hole (1711), and the second water inlet hole (1711) and the rotating shaft (20) are located on the same axis and communicated with the through hole (21);
one end of the rotating shaft (20) far away from the second water inlet hole (1711) extends out of the second lower shell (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812430.9A CN111911725A (en) | 2020-08-13 | 2020-08-13 | Rotary joint for connecting water cutting equipment with high-pressure water pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812430.9A CN111911725A (en) | 2020-08-13 | 2020-08-13 | Rotary joint for connecting water cutting equipment with high-pressure water pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111911725A true CN111911725A (en) | 2020-11-10 |
Family
ID=73284553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010812430.9A Pending CN111911725A (en) | 2020-08-13 | 2020-08-13 | Rotary joint for connecting water cutting equipment with high-pressure water pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111911725A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205745311U (en) * | 2016-05-10 | 2016-11-30 | 南通威而多专用汽车制造有限公司 | The rotatory sealing attachment means of car is removed for roadmarking hand propelled water under high pressure |
| CN208237293U (en) * | 2018-03-15 | 2018-12-14 | 佛山市锐驰科技有限公司 | A kind of rotary joint for Water Cutting equipment |
| CN208670365U (en) * | 2018-08-10 | 2019-03-29 | 天津海威斯特高压泵制造有限公司 | A kind of Novel rotary composite structure for high-pressure fluid |
-
2020
- 2020-08-13 CN CN202010812430.9A patent/CN111911725A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205745311U (en) * | 2016-05-10 | 2016-11-30 | 南通威而多专用汽车制造有限公司 | The rotatory sealing attachment means of car is removed for roadmarking hand propelled water under high pressure |
| CN208237293U (en) * | 2018-03-15 | 2018-12-14 | 佛山市锐驰科技有限公司 | A kind of rotary joint for Water Cutting equipment |
| CN208670365U (en) * | 2018-08-10 | 2019-03-29 | 天津海威斯特高压泵制造有限公司 | A kind of Novel rotary composite structure for high-pressure fluid |
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