Special device for coal mill bearing bush cooling water pipe inlet connector

Abstract

The utility model discloses a special device for an inlet joint of a bearing bush cooling water pipe of a coal mill in the field of inlet joints, which comprises a butt joint ring and a shell connected to the side surface of the butt joint ring, a plurality of radiating fins distributed circumferentially connected to the outer cambered surface of the shell, a joint part connected to the outer cambered surface of the shell, a butt joint part in butt joint with the joint part, and a shaft sleeve on the inner wall of the shell, the rotating shaft sleeve and the rotating shaft are connected through the butt joint ring, a coiled pipe is arranged between the shaft sleeve and the shell, the coiled pipe is connected with the connector component, and the two ends of the shaft sleeve are connected with the butt joint ring. And the device can be in sealed connection with the device and external circulating cooling liquid for a hundred years through the structure of the cooling joint, so that the situation that the cooling liquid leaks from the joint when the device is used is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of inlet joints, in particular to a special device for an inlet joint of a bearing bush cooling water pipe of a coal mill. Background Art

[0002] Coal mills play an important role in industrial production. Bearings are one of the key components of coal mills, and their normal operation requires proper cooling. At present, there may be some problems in the use of cooling water pipes for coal mill bearings. On the one hand, there is pipe blockage: there may be debris, scale, etc. in the cooling water pipes, which leads to poor water flow, unstable cooling water flow, reduced cooling water volume, and affected the cooling effect of the bearings. On the other hand, the cooling water temperature itself is too high: if the source temperature of the cooling water is high, then the water temperature after cooling the bearings will also increase accordingly. During maintenance, high-intensity water pressure is required to flush and clear the cooling water pipes. The original joints need to be removed, and connecting high-strength water pipes has become a technical challenge.

[0003] Furthermore, existing inlet connectors may need to be made easier to install and remove. When the cooling system needs to be maintained or parts replaced, the complex connector structure may increase operational difficulty and time costs.

[0004] Chinese patent publication number CN221547589U discloses an externally guided cooling sleeve, comprising a straight-tube sleeve body, one end of which is a first connection end, and the other end of which is a second connection end. The first connection end is provided with one or more liquid inlet channels, liquid inlet pipes, and liquid inlet connectors, as well as one or more liquid outlet channels, liquid outlet pipes, and liquid outlet connectors. The outlet ends of the outlet channels are located outside the first connection end, the inlet ends of the outlet channels are located on a first step surface, and the outlet ends of the inlet pipes are fixed to the first step surface and communicate with the inlet end and the outlet channels. This externally guided cooling sleeve features externally positioned inlet and outlet channels at the working end for cooling, facilitates processing, does not change the structure of the sleeve body, and ensures the rigidity and strength of the sleeve body.

[0005] However, the above-mentioned disclosed solution has the following shortcomings: when in use, the above-mentioned device cools the rotating sleeve and the rotating shaft by externally diverting the coolant. However, when the above-mentioned device is in use, the internal structure of the sleeve is penetrated, which causes the coolant to flow unevenly in the sleeve, resulting in uneven cooling effect between the sleeve and the rotating shaft, and further causing uneven thermal expansion and contraction of the sleeve, thereby generating bias friction. Utility Model Content

[0006] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the present invention to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0007] The purpose of the present invention is to address the technical problems existing in the background technology. The present invention proposes a special device for the inlet joint of the cooling water pipe of the coal mill bearing. The present invention can effectively improve the cooling effect and cooling uniformity of the rotating sleeve and the rotating shaft during rotation through the device, and the device can be sealed and connected with the external circulating coolant through the structure of the cooling joint, thereby avoiding the leakage of coolant from the joint when the device is in use.

[0008] The utility model proposes a special device for the inlet joint of the cooling water pipe of the bearing of a coal mill, which comprises a docking ring and a shell connected to its side, a plurality of circumferentially distributed heat dissipation fins connected to the outer arc surface of the shell, a joint component connected to the outer arc surface of the shell, the joint component is butt-connected to the docking component, a shaft sleeve on the inner wall of the shell, a serpentine tube is provided between the shaft sleeve and the shell, the serpentine tube is connected to the joint component, and both ends of the shaft sleeve are connected to the docking ring.

[0009] By adopting the above technical solution, this solution can constrain the flow direction and flow uniformity of the coolant through the serpentine tube structure compared to the traditional hollow heat dissipation cavity structure, thereby ensuring that the coolant will not be affected by gravity during the actual flow process, and ensuring that the cooling effect at each position inside the sleeve is the same.

[0010] Preferably, the joint component includes a joint shell connected to the outer arc surface of the shell, a sealing ring is connected to the end of the joint shell away from the shell, an entry groove is provided on the inner arc surface of the joint shell, and a limiting groove perpendicular to the entry groove is provided at the bottom of the entry groove.

[0011] By adopting the above technical solution, the present solution can effectively improve the docking sealing of the present device through the structure of the sealing ring, thereby reducing the gap between the connecting pipe and the inner wall of the docking shell, and improving the docking stability of the present device.

[0012] Preferably, a blocking plate is connected to the inner arc surface of the joint housing, a plurality of circumferentially distributed springs are connected to the inner wall of the joint housing, and a sliding plate is connected to the other end of the spring, which contacts and squeezes the side of the blocking plate.

[0013] By adopting the above technical solution, the present solution can effectively improve the automatic blocking effect of the present device through the combination of the spring and the sliding plate, thereby automatically achieving a sealed closing effect on the interior of the docking shell when the nozzle is pulled out.

[0014] Preferably, the docking component includes a connecting pipe in contact with the joint shell, one end of the connecting pipe is connected to a nozzle, the outer end surface of the connecting pipe is connected to a symmetrical limiter, the nozzle is conical, and a water outlet is provided on the side of the nozzle.

[0015] By adopting the above technical solution, this solution can achieve the effect of locking the connection pipe of the device from rotation through the combination of the structure of the limiting member and the entry groove and the limiting groove, thereby avoiding accidental disconnection of the device during use.

[0016] Preferably, the inner wall of the sleeve is provided with a wear-resistant layer, the outer arc surface of the sleeve is provided with a heat conductor, the heat conductor is arranged on both sides of the serpentine tube, and the other end of the heat conductor away from the sleeve is connected to the inner arc surface of the shell.

[0017] By adopting the above technical solution, the present solution can effectively improve the thermal conductivity of the device through the filled heat-conducting member, while reducing the air inside the shell and avoiding overheating and expansion.

[0018] Preferably, the docking rings are symmetrically arranged on both sides of the shell, and the docking rings are provided with a plurality of docking holes distributed in a circumference. The outer arc surface of the shell is provided with two joint parts, and the two joint parts are respectively connected to the two ends of the serpentine tube.

[0019] By adopting the above technical solution, the present solution can achieve a water circulation effect inside the serpentine tube through the two joint components, thereby reducing the difficulty of connection and docking of the present device.

[0020] In summary, the present invention has at least one of the following beneficial effects:

[0021] This device can effectively improve the heat dissipation and cooling efficiency of the device when the rotating shaft and the inside of the device rotate. When the device is in use, the docking ring structure can facilitate the docking and fixing of the device. At the same time, the device adopts a combined structure of a sliding plate and a blocking plate to ensure that the coolant inside the serpentine tube will not flow out when the connecting tube is pulled out, thereby ensuring the portability of the device. At the same time, the heat exchange efficiency of the device can be improved through the structure of the heat dissipation fins, thereby reducing the risk of overheating inside the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a front view of an embodiment of a special device for an inlet joint of a bearing bush cooling water pipe of a coal mill according to the utility model;

[0024] Figure 2 This is a schematic structural diagram of a serpentine tube in an embodiment of the present utility model;

[0025] Figure 3 This is a structural diagram of the docking housing in an embodiment of the present utility model;

[0026] Figure 4 for Figure 3 sectional view of

[0027] Figure 5 This is a structural diagram of the docking components in an embodiment of the present utility model;

[0028] Figure markings: 1. docking ring; 2. shell; 3. heat dissipation fin; 4. joint component; 401. joint shell; 402. sealing ring; 403. entry groove; 404. limiting groove; 405. blocking plate; 406. sliding plate; 407. spring; 5. docking component; 501. connecting pipe; 502. limiting member; 503. nozzle; 504. water outlet; 6. shaft sleeve; 7. serpentine tube. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 The utility model is described in further detail.

[0030] Example 1

[0031] like Figure 1-Figure 5 As shown, in order to solve the existing problems, in this embodiment, the utility model discloses a special device for the inlet joint of the cooling water pipe of the coal mill bearing, including a docking ring 1 and a shell 2 connected to its side, a plurality of circumferentially distributed heat dissipation fins 3 are connected to the outer arc surface of the shell 2, a joint component 4 is connected to the outer arc surface of the shell 2, the joint component 4 is butt-connected to the docking component 5, a shaft sleeve 6 on the inner wall of the shell 2, a serpentine tube 7 is provided between the shaft sleeve 6 and the shell 2, the serpentine tube 7 is connected to the joint component 4, and both ends of the shaft sleeve 6 are connected to the docking ring 1.

[0032] The joint component 4 includes a joint shell 401 connected to the outer arc surface of the shell 2, and a sealing ring 402 is connected to the end of the joint shell 401 away from the shell 2. The inner arc surface of the joint shell 401 is provided with an entry groove 403, and the bottom of the entry groove 403 is provided with a limiting groove 404 perpendicular to the entry groove 403.

[0033] The inner arc surface of the connector housing 401 is connected to a blocking plate 405 , and the inner wall of the connector housing 401 is connected to a plurality of circumferentially distributed springs 407 . The other end of the spring 407 is connected to a sliding plate 406 , which contacts and squeezes the side of the blocking plate 405 .

[0034] The docking component 5 includes a connecting pipe 501 in contact with the joint shell 401, one end of the connecting pipe 501 is connected to a nozzle 503, the outer end surface of the connecting pipe 501 is connected to a symmetrical limiter 502, the nozzle 503 is conical, and a water outlet 504 is provided on the side of the nozzle 503.

[0035] The specific working principle is: this device can effectively achieve the effect of cooling the heat generated by the rotating shaft during the rotation process inside the sleeve 6. Compared with the traditional device, this device adopts the structure of the serpentine tube 7 to constrain the flow direction of the coolant inside the shell 2, so that the coolant can be in uniform contact with the outer arc surface of the sleeve 6, thereby achieving a uniform cooling effect on the sleeve 6, avoiding the problem of uneven cooling causing deformation of the sleeve 6 in the traditional device.

[0036] When the device is in use, the docking ring 1 can facilitate the combined connection between the device and the external equipment. When the rotating shaft extends into the sleeve 6 of the device and rotates, rotational friction heat is generated. At this time, the joint component 4 of the device can enable the device to be docked with the external circulating coolant equipment.

[0037] When the docking component 5 extends into the connector component 4, the connecting pipe 501 extends into the connector shell 401. Due to the raised structure of the limiting member 502, the connecting pipe 501 can only smoothly enter the connector shell 401 when the limiting member 502 is located inside the entry groove 403. When the limiting member 502 reaches the bottom of the entry groove 403, the connecting pipe 501 is rotated so that the limiting member 502 enters the limiting groove 404, thereby achieving the locking effect of the connector shell 401 on the connecting pipe 501.

[0038] When the connecting pipe 501 is extended into the joint housing 401, the nozzle 503 pushes the sliding plate 406 to slide, thereby separating the sliding plate 406 from the blocking plate 405, and generating a gap between the sliding plate 406 and the blocking plate 405, thereby achieving the effect of connection and conduction. At this time, the water outlet 504 on the side of the nozzle 503 can ensure that the coolant flows out smoothly through the gap between the sliding plate 406 and the blocking plate 405 and enters the serpentine tube 7.

[0039] The heat exchange efficiency of the device can be improved by the heat dissipation fins 3 structure outside the shell 2.

[0040] Example 2

[0041] like Figure 1-Figure 5 As shown, in order to solve the existing problems, in this embodiment, based on the same concept as the above-mentioned embodiment 1, this special device for the inlet joint of the bearing cooling water pipe of the coal mill also includes: the inner wall of the sleeve 6 is provided with a wear-resistant layer, and the outer arc surface of the sleeve 6 is provided with a heat-conducting member, the heat-conducting member is arranged on both sides of the serpentine tube 7, and the other end of the heat-conducting member away from the sleeve 6 is connected to the inner arc surface of the shell 2.

[0042] The docking ring 1 is symmetrically arranged on both sides of the shell 2. The docking ring 1 is provided with a plurality of docking holes distributed in a circumference. Two joint components 4 are provided on the outer arc surface of the shell 2. The two joint components 4 are respectively connected to the two ends of the serpentine tube 7.

[0043] The specific working principle is: the structure of the heat conductor can fill the vacant part on the side of the serpentine tube 7, thereby improving the overall heat exchange efficiency of the device, while avoiding problems such as thermal expansion of air between the shell 2 and the sleeve 6. At the same time, the combination of the docking ring 1 and the docking hole can effectively improve the installation and docking accuracy of the device and reduce the installation difficulty of the device.

[0044] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A special device for the inlet joint of the cooling water pipe of the bearing of a coal mill, comprising a docking ring (1) and a shell (2) connected to the side thereof, wherein the outer arc surface of the shell (2) is connected to a plurality of circumferentially distributed heat dissipation fins (3), characterized in that: The outer arc surface of the shell (2) is connected to a joint component (4), the joint component (4) is butt-jointed with a butt-jointed component (5), a shaft sleeve (6) is provided on the inner wall of the shell (2), a serpentine tube (7) is provided between the shaft sleeve (6) and the shell (2), the serpentine tube (7) is connected to the joint component (4), and both ends of the shaft sleeve (6) are connected to the butt-jointed ring (1).

2. A dedicated device for the inlet joint of the bearing cooling water pipe of a coal mill according to claim 1, characterized in that: The joint component (4) comprises a joint housing (401) connected to the outer arc surface of the housing (2); an end of the joint housing (401) away from the housing (2) is connected to a sealing ring (402); an inner arc surface of the joint housing (401) is provided with an entry groove (403); and a limiting groove (404) perpendicular to the entry groove (403) is provided at the bottom of the entry groove (403).

3. A dedicated device for the inlet joint of the bearing cooling water pipe of a coal mill according to claim 2, characterized in that: The inner arc surface of the joint housing (401) is connected to a blocking plate (405), the inner wall of the joint housing (401) is connected to a plurality of springs (407) distributed in a circumference, the other end of the spring (407) is connected to a sliding plate (406), and the sliding plate (406) contacts and squeezes the side of the blocking plate (405).

4. A dedicated device for the inlet joint of the bearing cooling water pipe of a coal mill according to claim 3, characterized in that: The docking component (5) comprises a connecting pipe (501) in contact with the joint housing (401), one end of the connecting pipe (501) is connected to a spray head (503), the outer end surface of the connecting pipe (501) is connected to a symmetrical limiting member (502), the spray head (503) is conical, and a water outlet hole (504) is provided on the side of the spray head (503).

5. A dedicated device for the inlet joint of the bearing cooling water pipe of a coal mill according to claim 4, characterized in that: The inner wall of the shaft sleeve (6) is provided with a wear-resistant layer, and the outer arc surface of the shaft sleeve (6) is provided with a heat-conducting member, which is arranged on both sides of the serpentine tube (7), and the other end of the heat-conducting member away from the shaft sleeve (6) is connected to the inner arc surface of the shell (2).

6. A dedicated device for the inlet joint of the bearing cooling water pipe of a coal mill according to claim 5, characterized in that: The docking ring (1) is symmetrically arranged on both sides of the shell (2), and a plurality of docking holes distributed in a circumferential manner are provided on the docking ring (1). Two joint components (4) are provided on the outer arc surface of the shell (2), and the two joint components (4) are respectively connected to the two ends of the serpentine tube (7).

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