CN217206446U - Cooling structure and heading equipment - Google Patents
Cooling structure and heading equipment Download PDFInfo
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- CN217206446U CN217206446U CN202220723026.9U CN202220723026U CN217206446U CN 217206446 U CN217206446 U CN 217206446U CN 202220723026 U CN202220723026 U CN 202220723026U CN 217206446 U CN217206446 U CN 217206446U
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Abstract
The application provides a cooling structure and tunnelling equipment, wherein cooling structure is applied to the spraying system, the spraying system includes rotary seal device and nozzle, cooling structure includes inlet channel and cooling channel, inlet channel is linked together with cooling channel, at least partly setting of rotary seal device is on cooling channel, when spraying system is in first operating mode, cooling channel is linked together with the nozzle, so that cooling medium flows into cooling channel and flows behind rotary seal device from the inlet channel, from the nozzle blowout. This cooling structure can be through entering the interior input coolant of passageway flow direction cooling channel, and then cools off rotary seal device when spraying system is in first operating mode, and extension rotary seal device's life avoids influencing work efficiency because of frequently changing rotary seal device, and then guarantees that spraying system can the continuation dust fall, guarantees good dust fall effect.
Description
Technical Field
The application belongs to the technical field of heading equipment, and particularly relates to a cooling structure and heading equipment.
Background
At present, an inner spraying system is often not used as the most effective dust fall means in the tunneling work, the reason is that the existing rotary sealing device is lack of an effective cooling structure, the service life of the rotary sealing device is short, the operation of replacing the rotary sealing device is complex, the working efficiency is seriously influenced, and in order to progress the tunneling work, the inner spraying system can only be used intermittently or not used selectively, so that the dust fall effect is poor.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem that this application will be solved lies in providing a cooling structure and heading equipment, can cool off rotary seal device, prolongs rotary seal device's life, avoids influencing work efficiency because of frequently changing rotary seal device, and then guarantees that spraying system can continuation dust fall, guarantees good dust fall effect.
In order to solve the above problem, the present application provides a cooling structure, is applied to the water-spraying system, the water-spraying system includes rotary seal device and nozzle, the cooling structure includes inlet channel and cooling channel, the inlet channel with cooling channel is linked together, at least a part of rotary seal device sets up on the cooling channel when the water-spraying system is in first operating mode, cooling channel with the nozzle is linked together, so that coolant from the inlet channel flows in cooling channel and flows through behind the rotary seal device, follow the nozzle blowout.
Optionally, the cooling structure further includes a return passage, and the return passage is used to communicate with the cooling passage when the spray system is in the second operating condition, so that the cooling medium flows into the return passage after flowing through the rotary sealing device.
Optionally, when the spraying system is in the second operating condition, the discharge end of the backflow channel is communicated with the inlet of the inlet channel, so that the backflow channel and the inlet channel form a loop.
Optionally, the cooling channel is annular, and the cooling channel extends along the circumferential direction of the rotary sealing device.
Optionally, the spray opening is provided on the main shaft, the spraying system further comprises a spacer sleeve and a water distribution plate, the spacer sleeve is sleeved on the main shaft along the circumferential direction of the main shaft, the water distribution plate is sleeved on the spacer sleeve along the circumferential direction of the main shaft, at least one part of the rotary sealing device is arranged between the spacer sleeve and the water distribution plate, and a gap is arranged between the spacer sleeve and the water distribution plate to form the cooling channel.
Optionally, a water distribution plate water inlet hole is formed in the water distribution plate, the water distribution plate water inlet hole is a part of the inlet channel, the water distribution plate water inlet hole includes a first water inlet section and a second water inlet section, the first water inlet section is arranged in parallel to the axial direction of the main shaft, and the second water inlet section is arranged along the radial direction of the main shaft;
the water distribution plate is provided with a water distribution plate water return hole, the water distribution plate water return hole is a part of the return channel, the water distribution plate water return hole comprises a first water return section and a second water return section, the first water return section is arranged along the radial direction of the main shaft, and the second water return section is arranged in parallel to the axial direction of the main shaft.
Optionally, the spraying system further comprises a floating seal frame, the floating seal frame is arranged along the circumferential direction of the main shaft, and the floating seal frame is connected with the water distribution plate along the axial direction of the main shaft;
a seal frame water inlet hole is formed in the floating seal frame and is a part of the inlet channel, the seal frame water inlet hole comprises a third water inlet section, a fourth water inlet section and a fifth water inlet section which are sequentially communicated, the third water inlet section and the fifth water inlet section are arranged in parallel to the axial direction of the main shaft, the fifth water inlet section is communicated with the first water inlet section, and the fourth water inlet section is arranged along the radial direction of the main shaft;
the floating seal frame is provided with a seal frame water return hole, the seal frame water return hole is a part of the return channel, the seal frame water return hole comprises a third water return section, a fourth water return section and a fifth water return section, the third water return section and the fifth water return section are parallel to the axial direction of the main shaft and are communicated with each other, and the fourth water return section is arranged along the radial direction of the main shaft.
Optionally, a sealing element is arranged at the joint of the fifth water inlet section and the first water inlet section, and a sealing element is arranged at the joint of the third water return section and the second water return section.
Optionally, the spindle is rotatably disposed in a housing, a housing water inlet is formed in the housing, the housing water inlet is parallel to the axial direction of the spindle, and the housing water inlet is communicated with the third water inlet section;
and a shell water return hole is formed in the shell and is parallel to the axial direction of the main shaft, and the shell water return hole is communicated with the fifth water return section.
In another aspect of the application, a heading device is provided, which comprises the cooling structure.
Advantageous effects
The embodiment of the utility model provides a cooling structure and heading equipment that provide, wherein, cooling structure is through setting up cooling channel, and make rotary seal device's at least partly setting on cooling channel, can be through entering the interior input cooling medium of passageway flow direction cooling channel, and then cool off rotary seal device when water-spraying system is in first operating mode, extension rotary seal device's life avoids influencing work efficiency because of frequently changing rotary seal device, and then guarantees that water-spraying system can the continuation dust fall, guarantee good dust fall effect.
Drawings
Fig. 1 is a first sectional view of a cooling structure of an embodiment of the present application in the axial direction of a main shaft;
FIG. 2 is a second cross-sectional view of the cooling structure of the embodiment of the present application taken along the axial direction of the main shaft;
FIG. 3 is an enlarged view of the water inlet holes of the water distribution plate and the water inlet holes of the sealing frame of the cooling structure according to the embodiment of the present invention;
FIG. 4 is a cross-sectional view of a cooling structure of an embodiment of the present application taken along a radial direction of a main axis;
fig. 5 is a schematic perspective view of a housing according to an embodiment of the present application.
The reference numerals are represented as:
1. a rotary seal device; 21. a water inlet of the water distribution plate; 211. a first water inlet section; 212. a second water inlet section; 22. a water inlet of the sealing frame; 221. a third water inlet section; 222. a fourth water inlet section 223 and a fifth water inlet section; 23. a water inlet of the shell; 31. a water return hole of the water distribution plate; 311. a first backwater section; 312. a second backwater section; 32. sealing the frame water return hole; 321. a third backwater section; 322. a fourth backwater section; 323. a fifth backwater section; 33. a shell water return hole; 4. a cooling channel; 5. a main shaft; 6. a spacer sleeve; 7. a water distribution plate; 8. a floating seal carrier; 9. a seal member; 10. a housing.
Detailed Description
In the description of the present application, it is to 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", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Referring to fig. 1 to 5 in combination, according to an embodiment of the present application, a cooling structure is applied to a spraying system, the spraying system includes a rotary sealing device 1 and a spraying opening, the cooling structure includes an inlet channel and a cooling channel, the inlet channel is communicated with the cooling channel, at least a portion of the rotary sealing device 1 is disposed on the cooling channel, and when the spraying system is in a first operating condition, the cooling channel is communicated with the spraying opening, so that a cooling medium flows into the cooling channel from the inlet channel and flows through the rotary sealing device 1, and then is sprayed out from the spraying opening. Through setting up cooling channel to make at least partly setting of rotary seal device 1 on cooling channel, can be through entering channel flow direction cooling channel in input coolant, and then cool off rotary seal device 1 when the water-spraying system is in first operating mode, extension rotary seal device 1's life avoids influencing work efficiency because of frequently changing rotary seal device 1, and then guarantees that water-spraying system can the continuation dust fall, guarantees good dust fall effect.
Furthermore, the first operating mode of spraying system is spraying dust fall operating mode, and when spraying system was in first operating mode also, in cooling medium was imported the cooling channel by the access passage, discharged the nozzle after cooling rotary sealing device 1 again, carried out dust fall work by the nozzle blowout.
Further, at least a part of the rotary sealing device 1 is disposed on a flow path of the cooling medium in the cooling channel, so that the cooling medium is in contact with the rotary sealing device 1, and a good cooling effect is ensured.
Further, the cooling medium is water.
The cooling structure further comprises a return channel, and the return channel is used for being communicated with the cooling channel when the spraying system is in the second working condition, so that the cooling medium flows into the return channel after flowing through the rotary sealing device 1. Through setting up return flow channel, still can realize cooling to rotary seal device 1 when spraying system is in the second operating mode, avoid damaging because of rotary seal device 1 is overheated, prolong rotary seal device 1's life, avoid influencing work efficiency because of frequently changing rotary seal device 1, and then guarantee that spraying system can the continuation dust fall, guarantee good dust fall effect.
Furthermore, the second working condition of the spraying system is a spraying stopping working condition, that is, the spraying system does not perform spraying dust-settling work when being in the second working condition, and the cooling medium is input into the cooling channel through the inlet channel, is cooled by the rotary sealing device 1, is then discharged into the return channel, and is discharged through the return channel.
Further, when the spraying system is in the second working condition, the spraying opening is closed, so that the cooling medium flows through the rotary sealing device 1, is not sprayed out from the spraying opening, and flows into the return channel.
Specifically, a control valve can be arranged at the spray opening to realize the opening and closing of the spray opening.
Furthermore, a control valve can be arranged on the backflow channel, when the spraying system is in the first working condition, the backflow channel is closed through the control valve, and the cooling medium is prevented from flowing away from the backflow channel to influence the spraying amount.
When the spraying system is in the second working condition, the discharge end of the backflow channel is communicated with the inlet of the inlet channel, so that the backflow channel and the inlet channel form a loop, the use amount of the cooling medium can be reduced, and the waste of the cooling medium is avoided.
Further, the return passage and the inlet passage form a loop in which the cooling medium can circulate.
Furthermore, a circulating pump can be arranged on the loop and used for driving the cooling medium to circularly flow.
The spraying opening is arranged on the main shaft, the spraying system further comprises a spacer sleeve and a water distribution disc 7, the spacer sleeve is sleeved on the main shaft along the circumferential direction of the main shaft, the water distribution disc 7 is sleeved on the spacer sleeve along the circumferential direction of the main shaft, at least one part of the rotary sealing device 1 is arranged between the spacer sleeve and the water distribution disc 7, and a gap is arranged between the spacer sleeve and the water distribution disc 7 to form a cooling channel. Through setting up spacer sleeve and water distribution plate 7, formed cooling channel to offer the position for entering channel and return flow path provide, and then realized the cooling to rotary seal device 1, prolong rotary seal device 1's life, avoid influencing work efficiency because of frequently changing rotary seal device 1, and then guarantee that water-spraying system can the continuation dust fall, guarantee good dust fall effect.
Further, the spacer sleeve and the water distribution plate 7 are both of annular structures, the spacer sleeve is sleeved on the main shaft along the circumferential direction of the main shaft, and the water distribution plate 7 is sleeved on the spacer sleeve along the circumferential direction of the main shaft.
Further, be provided with the mounting groove on the water distribution plate 7, rotary seal device 1 is the annular, and rotary seal device 1 sets up in the mounting groove, and rotary seal device 1 keeps away from one section of mounting groove tank bottom and stretches into in the cooling channel.
Furthermore, a gap is formed between the spacer bush and the water distribution disc 7 in the radial direction of the main shaft, and a cooling channel is formed.
The cooling channel is annular and extends along the circumferential direction of the rotary sealing device 1, so that the rotary sealing device 1 can be ensured to have a good cooling effect.
Further, the spacer sleeve and the water distribution plate 7 are both in an annular structure, and the cooling channel is formed between the spacer sleeve and the water distribution plate 7, namely the cooling channel is located on the outer side of the spacer sleeve and located on the inner side of the water distribution plate 7.
The water distribution plate 7 is provided with a water distribution plate water inlet hole 21, the water distribution plate water inlet hole 21 is a part of an inlet channel, the water distribution plate water inlet hole 21 comprises a first water inlet section 211 and a second water inlet section 212, the first water inlet section 211 is arranged in parallel with the axial direction of the main shaft, and the second water inlet section 212 is arranged along the radial direction of the main shaft;
the water distribution plate 7 is provided with a water distribution plate return hole 31, the water distribution plate return hole 31 is a part of a return channel, the water distribution plate return hole 31 comprises a first return section and a second return section, the first return section is arranged along the radial direction of the main shaft, and the second return section is arranged parallel to the axial direction of the main shaft.
The cooling medium is provided with a path for entering the cooling channel by setting the water inlet hole 21 of the water distribution plate, and the cooling medium is discharged from the cooling channel by setting the water return hole 31 of the water distribution plate, so that the smooth circulation of the cooling medium is ensured.
Further, the cooling medium flows from the first water inlet section 211 to the second water inlet section 212, that is, the cooling medium enters from the inlet of the first water inlet section 211, the outlet of the first water inlet section 211 is connected to the inlet of the second water inlet section 212, and the cooling medium is discharged from the outlet of the first water inlet section 211 to the inlet of the second water inlet section 212.
Furthermore, the second water inlet section 212 is far away from one end of the first water inlet section 211, that is, the discharge port of the second water inlet section 212 is arranged on the outer peripheral wall of the water distribution plate 7, so that the cooling medium can completely and smoothly enter the cooling channel.
Furthermore, the cooling medium flows from the first water return section to the second water return section, that is, the cooling medium enters from the inlet of the first water return section, the outlet of the first water return section is connected with the inlet of the second water return section, and the cooling medium is discharged from the outlet of the first water return section into the inlet of the second water return section.
Further, the end of the first backwater section, which is far away from the second backwater section, i.e. the inlet of the first backwater section, is opened on the outer peripheral wall of the water distribution plate 7, so that the cooling medium can smoothly enter the first backwater section from the cooling channel.
The spraying system also comprises a floating sealing frame which is arranged along the circumferential direction of the main shaft and is connected with the water distribution disc 7 along the axial direction of the main shaft;
a sealing frame water inlet hole 22 is formed in the floating sealing frame, the sealing frame water inlet hole 22 is a part of an inlet channel, the sealing frame water inlet hole 22 comprises a third water inlet section 221, a fourth water inlet section and a fifth water inlet section which are sequentially communicated, the third water inlet section 221 and the fifth water inlet section are arranged in parallel to the axial direction of the main shaft, the fifth water inlet section is communicated with the first water inlet section 211, and the fourth water inlet section is arranged along the radial direction of the main shaft;
the floating seal frame is provided with a seal frame water return hole, the seal frame water return hole is a part of a return channel, the seal frame water return hole comprises a third return water section, a fourth return water section and a fifth return water section, the third return water section and the fifth return water section are arranged in parallel to the axial direction of the main shaft, the third return water section is communicated with the second return water section, and the fourth return water section is arranged along the radial direction of the main shaft.
Through setting up the floating seal frame, for distributing water dish 7 provides the mounted position the time, also for coolant gets into and distributes water dish inlet opening 21 and provide the route, for coolant from distributing water dish return water hole 31 internal discharge provides the route, guaranteed the smooth and easy of coolant's circulation.
Further, the floating seal holder is substantially annular, and a part of the floating seal holder is connected to the water distribution plate 7 in a direction parallel to the axial direction of the main shaft.
Further, the cooling medium sequentially flows from the third water return section, the fourth water return section and the fifth water return section.
Further, the discharge port of the fifth water inlet section is opposite to the first water inlet section 211 along the axial direction parallel to the main shaft, so that the cooling medium can smoothly flow into the first water inlet section 211 from the fifth water inlet section.
Furthermore, after flowing out from the water return hole 31 of the water distribution plate, the cooling medium flows out from the third water inlet section 221, the fourth water inlet section and the fifth water inlet section in sequence.
Further, the outlet of the second water return section is opposite to the inlet of the third water return section along the direction parallel to the axial direction of the main shaft, so that the cooling medium can smoothly flow from the second water return section to the third water return section.
Further, the first water inlet section 211, the second water inlet section 212, the third water inlet section 221, the fourth water inlet section and the fifth water inlet section have the same aperture. The first, second, third, fourth and fifth backwater sections have the same aperture.
The sealing piece is arranged at the joint of the fifth water inlet section and the first water inlet section 211, the sealing piece is arranged at the joint of the third water return section and the second water return section, and the sealing piece can ensure that the joint of the fifth water inlet section and the first water inlet section 211 and the joint of the third water return section and the second water return section have good sealing effect and prevent the leakage of a cooling medium.
Furthermore, two mounting grooves are formed in the end faces, connected with the water distribution plate 7, of the floating sealing frame, and the two sealing elements are correspondingly arranged in the mounting grooves.
The main shaft can be rotatably arranged in the shell 10, a shell water inlet hole 23 is formed in the shell 10, the shell water inlet hole 23 is arranged in parallel to the axial direction of the main shaft, and the shell water inlet hole 23 is communicated with the third water inlet section 221;
a shell water return hole 33 is formed in the shell 10, the shell water return hole 33 is parallel to the axial direction of the main shaft, and the shell water return hole 33 is communicated with the fifth water return section.
By arranging the shell 10, an installation position is provided for the main shaft and the floating seal frame, and the main shaft is protected. The housing 10 is provided with a housing water inlet 23 and a housing water return 33, which also provide a path for the cooling medium to enter the seal holder water inlet 22 and to be discharged from the seal holder water return.
Further, the outlet of the housing water inlet hole 23 is opposite to the inlet of the third water inlet section 221 in the axial direction parallel to the main shaft, and the cooling medium enters the housing water inlet hole 23 from the inlet of the housing water inlet hole 23 and flows into the inlet of the third water inlet section 221 from the outlet of the housing water inlet hole 23.
Further, the inlet of the housing water return hole 33 is disposed opposite to the outlet of the fifth water return section in the axial direction parallel to the main shaft, and the cooling medium flows into the inlet of the housing water return hole 33 from the outlet of the fifth water return section and is discharged from the outlet of the housing water return hole 33.
In another aspect of the present embodiment, there is provided a heading device comprising a cooling structure as described above.
The embodiment of the utility model provides a cooling structure and heading equipment that provide, wherein, cooling structure is through setting up cooling channel, and make rotary seal device 1 at least partly set up on cooling channel, can be through entering the interior input cooling medium of passageway flow direction cooling channel, and then cooling off rotary seal device 1 when water-spraying system is in first operating mode, extension rotary seal device 1's life, avoid influencing work efficiency because of frequently changing rotary seal device 1, and then guarantee that water-spraying system can continuation dust fall, guarantee good dust fall effect.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (10)
1. A cooling structure for a spraying system, the spraying system comprising a rotary sealing device (1) and a spray opening, the cooling structure comprising an inlet channel and a cooling channel, the inlet channel being in communication with the cooling channel, at least a portion of the rotary sealing device (1) being disposed on the cooling channel, the cooling channel being in communication with the spray opening when the spraying system is in a first operating condition, such that a cooling medium is sprayed from the spray opening after flowing from the inlet channel into the cooling channel and through the rotary sealing device (1).
2. A cooling arrangement according to claim 1, characterized in that the cooling arrangement further comprises a return channel for communication with the cooling channel when the spray system is in the second operating condition, such that the cooling medium flows into the return channel after flowing through the rotary sealing device (1).
3. The cooling structure of claim 2, wherein the discharge end of the return channel is in communication with the inlet of the inlet channel when the spray system is in the second condition, such that the return channel is in circuit with the inlet channel.
4. A cooling arrangement according to claim 2, characterised in that the cooling channel is annular, which cooling channel extends in the circumferential direction of the rotary sealing device (1).
5. The cooling structure according to claim 2, characterized in that the spray opening opens onto a main shaft, the spray system further comprising a spacer sleeve and a water distribution disc (7), the spacer sleeve being fitted over the main shaft along a circumferential direction of the main shaft, the water distribution disc (7) being fitted over the spacer sleeve along the circumferential direction of the main shaft, at least a part of the rotary sealing device (1) being arranged between the spacer sleeve and the water distribution disc (7), a gap being provided between the spacer sleeve and the water distribution disc (7) forming the cooling channel.
6. The cooling structure according to claim 5, characterized in that the water distribution plate (7) is provided with a water distribution plate water inlet hole (21), the water distribution plate water inlet hole (21) is a part of the inlet passage, the water distribution plate water inlet hole (21) comprises a first water inlet section (211) and a second water inlet section (212), the first water inlet section (211) is arranged parallel to the axial direction of the main shaft, and the second water inlet section (212) is arranged along the radial direction of the main shaft;
the water distribution plate is characterized in that a water distribution plate return hole (31) is formed in the water distribution plate (7), the water distribution plate return hole (31) is a part of the return channel, the water distribution plate return hole (31) comprises a first return section and a second return section, the first return section is arranged along the radial direction of the main shaft, and the second return section is arranged in parallel to the axial direction of the main shaft.
7. The cooling structure according to claim 6, characterized in that the spraying system further comprises a floating seal holder disposed along a circumferential direction of the main shaft, the floating seal holder being connected to the water distribution plate (7) along an axial direction of the main shaft;
a sealing frame water inlet hole (22) is formed in the floating sealing frame, the sealing frame water inlet hole (22) is a part of the inlet channel, the sealing frame water inlet hole (22) comprises a third water inlet section (221), a fourth water inlet section and a fifth water inlet section which are sequentially communicated, the third water inlet section (221) and the fifth water inlet section are arranged in parallel to the axial direction of the main shaft, the fifth water inlet section is communicated with the first water inlet section (211), and the fourth water inlet section is arranged along the radial direction of the main shaft;
the floating seal frame is provided with a seal frame water return hole, the seal frame water return hole is a part of the return channel, the seal frame water return hole comprises a third water return section, a fourth water return section and a fifth water return section, the third water return section and the fifth water return section are parallel to the axial direction of the main shaft and are communicated with each other, and the fourth water return section is arranged along the radial direction of the main shaft.
8. The cooling structure of claim 7, wherein a sealing member is arranged at the joint of the fifth water inlet section and the first water inlet section (211), and a sealing member is arranged at the joint of the third water return section and the second water return section.
9. The cooling structure according to claim 7, wherein the main shaft is rotatably disposed in a housing (10), a housing water inlet hole (23) is formed in the housing (10), the housing water inlet hole (23) is disposed parallel to an axial direction of the main shaft, and the housing water inlet hole (23) is communicated with the third water inlet section (221);
a shell water return hole (33) is formed in the shell (10), the shell water return hole (33) is parallel to the axial direction of the main shaft, and the shell water return hole (33) is communicated with the fifth water return section.
10. A heading device comprising a cooling structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220723026.9U CN217206446U (en) | 2022-03-30 | 2022-03-30 | Cooling structure and heading equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220723026.9U CN217206446U (en) | 2022-03-30 | 2022-03-30 | Cooling structure and heading equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217206446U true CN217206446U (en) | 2022-08-16 |
Family
ID=82758255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220723026.9U Active CN217206446U (en) | 2022-03-30 | 2022-03-30 | Cooling structure and heading equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217206446U (en) |
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2022
- 2022-03-30 CN CN202220723026.9U patent/CN217206446U/en active Active
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