Automatic lubricating multi-channel joint of granulator

The modular design of the automatic lubrication multi-channel connector for the pellet mill solves the problems of inconvenient disassembly and assembly of the lubrication connector and poor low-temperature lubrication effect, achieving efficient lubrication system maintenance and normal lubrication in low-temperature environments.

CN223985044UActive Publication Date: 2026-03-10CPM MASCH WUXI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-09
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

The existing lubrication joint structure of pellet mills leads to grease leakage, inconvenience in disassembly and assembly, and poor lubrication effect in low-temperature environments, which affects processing quality.

Method used

The pellet mill automatic lubrication multi-channel joint adopts a modular design, including a main shaft end cover, coupling bushing, copper nut mounting groove, rotating retaining ring, rotating shaft cavity, cold oil transmission channel group and hot oil transmission channel group, realizing the separation of cold and hot oil and solving the lubrication failure problem through grease heating drive.

Benefits of technology

It improves the convenience of daily maintenance and the efficiency of disassembly and assembly, ensures that the lubrication system works normally in low-temperature environments, and avoids lubrication failure caused by grease solidification.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an automatic lubricating multi-channel joint of a granulator, which is characterized in that the center of a main shaft end cover is sleeved on a main shaft of the granulator, and a coupling shaft sleeve is arranged on one side, far away from a flange, of the main shaft end cover through bolt connection; the copper nut mounting groove is formed in the center of the coupling shaft sleeve; the rotating check ring is connected to the side, away from the flange, of the coupling shaft sleeve through bolts. The rotating shaft cavity is formed in the center of the coupling shaft sleeve and the rotating check ring. One side of the cold oil transmission channel group sleeves the copper nut mounting groove, and the other side of the cold oil transmission channel group is arranged on the left and right sides of the rotary check ring; one side of the hot oil transmission channel group is sleeved on the copper nut mounting groove; due to the arrangement of a modularized split-charging double-channel lubricating system, the modularized split-charging double-channel lubricating device has the following beneficial effects that the daily maintenance section is shorter, the disassembly and assembly efficiency is high, and the problem of lubrication failure caused by grease solidification in a low-temperature environment due to climate is solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ring die pelletizer, especially to the technical field of lubricating multi-channel joint on the main shaft box of ring die pelletizer, and specifically relates to a pelletizer automatic lubricating multi-channel joint. BACKGROUND

[0002] The existing lubricating joint of the pelletizer directly supplies oil through the shaft coupling and the oil delivery pipe. Because of the direct connection, the outlet of the oil pump is directly connected with the oil delivery pipe. However, during the long-term 24-hour uninterrupted use, the oil pump will input oil into the oil delivery pipe under pressure, and the pipeline needs to be disassembled and assembled regularly for maintenance to prevent oil leakage. Otherwise, the processing quality will be affected. However, the direct connection structure of one pipe body directly connected with the pump and the oil supply port is relatively troublesome and low in efficiency during disassembly and assembly. Moreover, the residual oil in the pipeline will drip into the main shaft box of the pelletizer.

[0003] In addition, the oil is in a semi-solid state in a low-temperature environment in winter, and the lubricating effect of the existing lubricating joint on the main shaft and the compression roller is poor. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a pelletizer automatic lubricating multi-channel joint to solve the difficulties of the prior art.

[0005] To achieve the above-mentioned purposes and other related purposes, the utility model provides a pelletizer automatic lubricating multi-channel joint, which comprises:

[0006] A main shaft end cover 1 is sleeved on the main shaft of the pelletizer, and the main shaft end cover 1 is connected with the flange 9 on the side plate of the pelletizer through bolts around the main shaft end cover 1.

[0007] A shaft coupling sleeve 2 is arranged on the side of the main shaft end cover 1 away from the flange 9 through bolt connection.

[0008] A copper nut mounting groove 21 is arranged in the middle of the shaft coupling sleeve 2.

[0009] A rotating baffle 3 is arranged on the side of the shaft coupling sleeve 2 away from the flange 9 through bolt connection.

[0010] A rotating baffle 3 is arranged on the side of the shaft coupling sleeve 2 away from the flange 9 through bolt connection.

[0011] A cold oil transmission channel group 5 is arranged on one side of the copper nut mounting groove 21, and the other side of the cold oil transmission channel group 5 is arranged on both sides of the rotating baffle 3.

[0012] A group of hot oil transmission channels 6 is sleeved on one side of the copper nut mounting groove 21 and is opened on the other side of the shaft coupling sleeve 2 in the direction close to the main shaft end cover 1;

[0013] An oil heating drive 7 is arranged in the center of the rotating shaft cavity 4 and is connected to the main shaft of the granulator on one side.

[0014] According to a preferred scheme, a wire tube accommodation groove 11 is arranged on the side of the shaft coupling sleeve 2 away from the flange 9.

[0015] According to a preferred scheme, the group of cold oil transmission channels 5 includes:

[0016] Two cold oil copper nuts 51 are arranged on the side of the copper nut mounting groove 21 close to the rotating stop ring 3.

[0017] A cold oil inlet hole 52 is arranged on one side of the cold oil copper nut 51.

[0018] A cold oil outlet hole 53 is arranged on the sidewall of the rotating stop ring 3.

[0019] A cold oil channel 54 is arranged on the side of the cold oil copper nut 51 below the cold oil inlet hole 52 and is communicated with the cold oil outlet hole 53 on the other side.

[0020] According to a preferred scheme, the group of hot oil transmission channels 6 includes:

[0021] Four hot oil copper nuts 61 are arranged on the side of the copper nut mounting groove 21 close to the main shaft end cover 1.

[0022] A hot oil outlet hole 62 is arranged on one side of the hot oil copper nut 61 and is communicated with the rotating shaft cavity 4 through the shaft coupling sleeve 2.

[0023] A heating channel oil injection hole 63 is arranged on the shaft coupling sleeve 2 in the direction close to the main shaft end cover 1 and is communicated with the rotating shaft cavity 4 through the shaft coupling sleeve 2.

[0024] According to a preferred scheme, an oil nozzle 8 or plug 81 is arranged in the hot oil outlet hole 62 and the cold oil inlet hole 52.

[0025] According to a preferred scheme, the oil heating drive 7 includes:

[0026] A rotating shaft 71 is fitted in the center of the coupling sleeve 2 and the rotating retaining ring 3, and there is a gap between the outer wall of the rotating shaft 71 and the inner wall of the rotating shaft cavity 4.

[0027] A coupling sleeve 72 is fitted on one side of a rotating shaft 71 and on the other side of a granulator main shaft.

[0028] O-ring 73 is sleeved on the outside of the coupling sleeve 72. The O-ring 73 is located on the side of the rotating shaft 71 near the main shaft end cover 1. The outside of the O-ring 73 is in contact with the inner wall of the rotating shaft cavity 4.

[0029] This utility model employs a main shaft end cover, coupling bushing, copper nut mounting groove, rotating retaining ring, shaft cavity, cold oil transmission channel group, hot oil transmission channel group, and grease heating drive, and sets up a modularly packaged dual-channel lubrication system, achieving the following beneficial effects:

[0030] Routine maintenance is shorter and disassembly / reassembly is more efficient;

[0031] This solves the problem of lubrication failure caused by grease solidification in low-temperature environments due to climate.

[0032] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0033] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0034] Figure 2 The diagram shown is an exploded view of this utility model.

[0035] Figure 3 The diagram shown is an enlarged three-dimensional structural schematic of the coupling bushing in this utility model.

[0036] Figure 4 This is a cross-sectional view of the present invention.

[0037] Figure 5 The diagram shows the present invention installed on the main shaft box of a pellet mill.

[0038] Figure 6 This diagram shows the assembly positions of the coupling sleeve and O-ring after the spindle end cover has been removed.

[0039] Label Explanation

[0040] 1. Spindle end cover; 11. Conduit clearance groove;

[0041] 2. Coupling bushing; 21. Copper nut mounting slot;

[0042] 3. Rotate the retaining ring;

[0043] 4. Rotating shaft cavity;

[0044] 5. Cold oil transmission channel assembly; 51. Cold oil copper nut; 52. Cold oil inlet hole; 53. Cold oil outlet hole; 54. Cold oil channel;

[0045] 6. Hot oil transmission channel assembly; 61. Hot oil copper nut; 62. Hot oil outlet hole; 63. Heating channel oil injection hole;

[0046] 7. Grease heating drive; 71. Rotary shaft; 72. Coupling sleeve; 73. O-ring seal;

[0047] 8. Oil nozzle; 81. Plug;

[0048] 9. Flange. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0050] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0051] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0052] This utility model proposes an automatic lubrication multi-channel connector for granulators, used in the lubrication process of the granulator spindle and pressure rollers. This utility model does not limit the specific type of granulator, but the structure of the spindle end cover 1, coupling bushing 2, copper nut mounting groove 21, rotating retaining ring 3, rotating shaft cavity 4, cold oil transmission channel group 5, hot oil transmission channel group 6, and grease heating drive 7 is particularly suitable for granulators with both cold and hot lubrication channels.

[0053] In general, the automatic lubrication multi-channel connector for granulators proposed in this utility model mainly includes: a main shaft end cover 1, a coupling bushing 2, a copper nut mounting groove 21, a rotating retaining ring 3, a rotating shaft cavity 4, a cold oil transmission channel group 5, a hot oil transmission channel group 6, and a grease heating drive 7. See also... Figure 1 It shows the arrangement of the spindle end cover 1, coupling bushing 2, copper nut mounting groove 21, rotating retaining ring 3, rotating shaft cavity 4, cold oil transmission channel group 5, hot oil transmission channel group 6 and grease heating drive 7.

[0054] The automatic lubrication multi-channel connector for granulators proposed in this utility model adopts a modular and separate assembly design, which has more sections compared to direct-connection channels. The pipelines that require frequent daily maintenance are all located on the outside of the granulator, which are the oil delivery pipes between the cold oil transmission channel group 5, the hot oil transmission channel group 6, and the oil pump. The daily maintenance sections are shorter, and the disassembly and assembly efficiency is high. The design adopts a dual-channel lubrication system with independent two-outlet cold oil transmission channel group 5 and four-outlet hot oil transmission channel group 6 to achieve precise distribution of lubricating grease. Among them, the hot oil transmission channel group 6 actively heats up by frictional heat generation of the rotating shaft 71 driven by grease heating, which effectively solves the problem of lubrication failure caused by grease solidification in low-temperature environments.

[0055] The main shaft end cover 1 is fitted onto the main shaft of the granulator. The main shaft end cover 1 is connected to the flange 9 on the side plate of the granulator by bolts. A coupling sleeve 2 is bolted to the side of the main shaft end cover 1 away from the flange 9. A conduit clearance groove 11 is provided on the side of the coupling sleeve 2 away from the flange 9 to avoid the wiring and oil pipeline. A copper nut mounting groove 21 is provided in the center of the coupling sleeve 2. A rotating retaining ring 3 is bolted to the side of the coupling sleeve 2 away from the flange 9. A rotating shaft cavity 4 is provided in the center of the coupling sleeve 2 and the rotating retaining ring 3.

[0056] The aforementioned cold oil transmission channel group 5 is fitted on one side of the copper nut mounting groove 21, and the other side of the cold oil transmission channel group 5 is opened on the left and right sides of the rotating retaining ring 3. The cold oil transmission channel group 5 includes: cold oil copper nut 51, cold oil inlet hole 52, cold oil outlet hole 53 and cold oil channel 54. There are two cold oil copper nuts 51, which are arranged and fitted on the side of the copper nut mounting groove 21 near the rotating retaining ring 3. The cold oil inlet hole 52 is opened on one side of the cold oil copper nut 51, and the cold oil outlet hole 53 is opened on the left and right side walls of the rotating retaining ring 3. The cold oil channel 54 is opened on one side directly below the cold oil copper nut 51, and the other side of the cold oil channel 54 is connected to the cold oil outlet hole 53.

[0057] The hot oil transmission channel assembly 6 is fitted on one side of the copper nut mounting groove 21, and the other side of the hot oil transmission channel assembly 6 is opened in the direction of the coupling sleeve 2 near the main shaft end cover 1. The hot oil transmission channel assembly 6 includes: hot oil copper nut 61, hot oil outlet hole 62 and heating channel oil injection hole 63. There are 4 hot oil copper nuts 61, which are arranged and fitted on the side of the copper nut mounting groove 21 near the main shaft end cover 1. The top of the hot oil outlet hole 62 is opened on one side of the hot oil copper nut 61, and the bottom of the hot oil outlet hole 62 passes through the coupling sleeve 2 and communicates with the rotating shaft cavity 4. The heating channel oil injection hole 63 is opened in the direction of the coupling sleeve 2 near the main shaft end cover 1, and the bottom of the heating channel oil injection hole 63 passes through the coupling sleeve 2 and communicates with the rotating shaft cavity 4.

[0058] It should be noted that the hot oil outlet 62 and the cold oil inlet 52 are fitted with oil nozzles 8 or plugs 81, which can be used to adjust the output as needed.

[0059] The aforementioned grease heating drive 7 is mounted in the center of the rotating shaft cavity 4. One side of the grease heating drive 7 is connected to the main shaft of the granulator. The grease heating drive 7 includes: a rotating shaft 71, a coupling sleeve 72, and an O-ring seal 73. The rotating shaft 71 is mounted in the center of the coupling sleeve 2 and the rotating retaining ring 3. There is a gap between the outer wall of the rotating shaft 71 and the inner wall of the rotating shaft cavity 4. The coupling sleeve 72 is mounted on the rotating shaft 71. The other side of the coupling sleeve 72 is mounted on the main shaft of the granulator. The O-ring seal 73 is mounted on the outer side of the coupling sleeve 72. The O-ring seal 73 is located on the side of the rotating shaft 71 near the main shaft end cover 1. The outer side of the O-ring seal 73 is in contact with the inner wall of the rotating shaft cavity 4.

[0060] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A multi-pass joint for automatic lubrication of a granulator, characterized in that Include: Main shaft end cover (1), the main shaft end cover (1) is centrally fitted on the main shaft of the granulator, the main shaft end cover (1) is connected with the flange (9) on the side plate of the granulator through bolts around; Coupling shaft sleeve (2), the coupling shaft sleeve (2) is arranged on the side of the main shaft end cover (1) away from the flange (9) through bolt connection; Copper nut mounting groove (21), the copper nut mounting groove (21) is centrally provided in the coupling shaft sleeve (2); Rotary check ring (3), the rotary check ring (3) is arranged on the side of the coupling shaft sleeve (2) away from the flange (9) through bolt connection; Shaft cavity (4), the shaft cavity (4) is centrally provided in the coupling shaft sleeve (2) and the rotary check ring (3); Cold oil transmission channel group (5), one side of the cold oil transmission channel group (5) is sleeved on the copper nut mounting groove (21), and the other side of the cold oil transmission channel group (5) is provided on the left and right sides of the rotary check ring (3); Hot oil transmission channel group (6), one side of the hot oil transmission channel group (6) is sleeved on the copper nut mounting groove (21), and the other side of the hot oil transmission channel group (6) is provided in the direction close to the main shaft end cover (1) of the coupling shaft sleeve (2); Grease heating drive (7), the grease heating drive (7) is clamped in the shaft cavity (4) centrally, and one side of the grease heating drive (7) is connected with the main shaft of the granulator.

2. The automatic lubricating multi-port junction for a granulator as set forth in claim 1, wherein The side of the coupling shaft sleeve (2) away from the flange (9) is provided with a wire pipe accommodation groove (11).

3. The automatic lubricating multi-port junction for a granulator as set forth in claim 2, wherein The cold oil transmission channel group (5) comprises: Cold oil copper nut (51), the cold oil copper nut (51) is provided with two, and the two cold oil copper nuts (51) are arranged and sleeved on the side of the copper nut mounting groove (21) close to the rotary check ring (3); Cold oil oil inlet hole (52), the cold oil oil inlet hole (52) is provided on one side of the cold oil copper nut (51); Cold oil oil outlet hole (53), the cold oil oil outlet hole (53) is provided on the side wall of the left and right sides of the rotary check ring (3); Cold oil channel (54), one side of the cold oil channel (54) is provided below the cold oil copper nut (51) and communicates with the cold oil oil inlet hole (52), and the other side of the cold oil channel (54) communicates with the cold oil oil outlet hole (53).

4. The automatic lubricating multi-port junction for a granulator as set forth in claim 3, wherein, The hot oil transmission channel group (6) comprises: Hot oil copper nut (61), the hot oil copper nut (61) is provided with four, and the four hot oil copper nuts (61) are arranged and sleeved on the side of the copper nut mounting groove (21) close to the main shaft end cover (1); Hot oil oil outlet hole (62), the top of the hot oil oil outlet hole (62) is provided on one side of the hot oil copper nut (61), and the bottom of the hot oil oil outlet hole (62) penetrates the coupling shaft sleeve (2) and communicates with the shaft cavity (4); Heating channel oil injection hole (63), the heating channel oil injection hole (63) is provided in the direction close to the main shaft end cover (1) of the coupling shaft sleeve (2), and the bottom of the heating channel oil injection hole (63) penetrates the coupling shaft sleeve (2) and communicates with the shaft cavity (4).

5. The automatic lubricating multi-port fitting for a granulator as set forth in claim 4, wherein, The hot oil oil outlet hole (62) and the cold oil oil inlet hole (52) are clamped with an oil nozzle (8) or a plug (81).

6. The automatic lubricating multi-port junction for a granulator as set forth in claim 5, wherein, The grease heating drive (7) comprises: Rotary shaft (71), the rotary shaft (71) is clamped in the center of the shaft sleeve (2) and the rotary baffle (3), and there is a gap between the outer wall of the rotary shaft (71) and the inner wall of the rotating shaft cavity (4); The shaft sleeve (72) is sleeved on one side of the rotary shaft (71), and the other side of the shaft sleeve (72) is sleeved on the main shaft of the granulator; O-shaped sealing ring (73), the O-shaped sealing ring (73) is sleeved on the outside of the shaft sleeve (72), the O-shaped sealing ring (73) is located on the side of the rotary shaft (71) close to the main shaft end cover (1), and the outside of the O-shaped sealing ring (73) is attached to the inner wall of the rotating shaft cavity (4).