Direct cooling type copper bearing bush for squeezing roller of sugarcane squeezer
By inserting a snake-shaped water-cooled coil in the copper bearings of the sugarcane press, the problems of unsatisfactory heat dissipation of the copper bearings and cooling water penetration are solved, and more efficient heat dissipation and lubrication are achieved, which improves the safety and service life of the equipment.
Patent Information
- Application Number
- CN202421956832.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The copper bearing bushing of the oblique type press has poor heat dissipation effect, and the penetration of cooling water affects the lubrication of the bearing bushing and the press roller shaft, and insufficient strength of the copper bearing bushing may lead to fracture.
Design a straight-cooled copper bearing shell with built-in seamless steel pipe or copper pipe bends to make a serpentine water-cooled coil pipe. The coil is fitted to the inner wall surface where the copper bearing shell is in contact with the press roller shaft. It directly cools and dissipates the heat source through cooling water, and isolates the cooling water from the copper bearing shell.
It achieves more effective heat dissipation, avoids thermal deformation and tile burning accidents of copper bearings, improves the safety and load-bearing capacity of the equipment, and avoids cooling water affecting lubrication, and extends the service life of copper bearings.
Smart Images
Figure CN223001145U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sugarcane sugar-making equipment, in particular to a direct-cooling copper bearing bush for the roller of a sugarcane press. Background Art
[0002] The inclined-adjustment press is the most widely used pressing and juice-extracting equipment in medium and large-sized sugarcane sugar factories at home and abroad. Since the inclined-adjustment press is a low-speed and heavy-load equipment, most of its roller bearing devices use the sliding bearing structure type of copper bearing bushes. During the operation of the equipment, the roller shaft rotates continuously in the copper bearing bush at a speed of 3 - 8 r / min. Therefore, the bearing device should have sufficient load-bearing capacity and wear resistance, and be able to dissipate heat well to ensure the normal and safe operation of the equipment. Due to the high price of copper alloy, the bearing device generally does not adopt a full-copper structure, but adopts the method of fitting a steel bearing shell and a copper bearing bush, and strengthens heat dissipation by setting multi-chamber water troughs, labyrinth water channels, etc. on the steel bearing shell, but the heat dissipation effect is not ideal. Especially during the peak production period when a large amount of sugarcane needs to be processed and the production is at full load, the heat dissipation problem of the bearing device has become an important safety hazard for the equipment.
[0003] In order to solve the heat dissipation problem of the bearing device, there is also a structural type of setting a cooling water channel inside the copper bearing bush. However, due to the inevitable defects in the casting and processing of the copper bearing bush, such as local tissue looseness, small cracks, etc., during the operation of the equipment, the cooling water penetrates into the inner surface of the copper bearing bush, affecting the lubrication between the bearing bush and the roller shaft, and intensifying the wear of the bearing bush and the roller shaft, posing a safety hazard to the equipment.
[0004] Moreover, the existing cooling water channels are directly opened inside the copper bearing bush, which reduces the load-bearing capacity of the copper bearing bush to a certain extent. When there are defects such as tissue looseness and small cracks in the copper bearing bush, or when the copper bearing bush is worn to a certain extent, equipment accidents such as the fracture of the copper bearing bush may occur. Content of the Utility Model
[0005] In order to overcome the above technical problems, the purpose of the utility model is to provide a direct-cooling copper bearing bush for the roller of a sugarcane press. The copper bearing bush is internally provided with a seamless steel pipe or a water-cooled coil formed by bending a copper pipe into a snake shape and cast integrally with it. The coil is fitted on the inner surface of the copper bearing bush in contact with the roller shaft, and by introducing cooling water, the part generating heat is directly cooled and dissipated from the inside of the copper bearing bush. At the same time, the load-bearing capacity of the bearing bush is improved, and the cooling water is isolated from the copper bearing bush to prevent the cooling water from penetrating into the inner surface of the bearing bush and affecting the lubrication between the bearing bush and the roller shaft.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] A direct-cooled copper bearing bush for the roller of a sugarcane press, comprising a copper bearing bush body 1 and a water-cooled coil 2. The copper bearing bush body 1 is an eccentric, semi-circular solid body composed of inner and outer arc surfaces. The water-cooled coil 2 is concentric with the outer arc of the copper bearing bush body 1, and the water-cooled coil 2 is placed between the inner and outer arcs of the copper bearing bush body 1 along the axis.
[0008] The copper bearing bush body 1 has a structure with thinner thicknesses at both ends of the two bush openings and a relatively thicker thickness in the middle. The water-cooled coil 2 is a coil bent from seamless steel pipes or copper pipes into a snake shape, and the tubes of each row of the coil are arranged at equal intervals, forming an arc shape with a wrap angle of 100° - 120°.
[0009] The copper bearing bush body 1 and the water-cooled coil 2 are cast into an integral structure. The water-cooled coil 2 forms an independent, closed, and long-loop cooling water channel inside the copper bearing bush body 1.
[0010] Square rib plates 5 are provided at both end faces of the outer arc of the bearing bush body 1, and arc-shaped reinforcing ribs 6 are provided in the middle of the outer arc. Wedge-shaped, closed oil collecting grooves 8 are provided along the axis on the inner arc surfaces near both sides of the bush opening, and two oil filling holes 7 of different lengths are provided inside near both sides of the bush opening.
[0011] On the upper outer side of one end face of the square rib plate 5, cooling water interfaces 3 are respectively provided on the left and right sides, and 2 lubricating oil interfaces 4 are provided near both sides of the bush opening.
[0012] The tube lengths of both ends of the water-cooled coil 2 extend to the middle position of the square rib plate 5. The pipe orifices of the head and tail rows of tubes of the water-cooled coil 2 are on the same side and extend with straight pipe segments towards the outer arc surface. The height of the straight pipe segments is equal to that of the square rib plate 5, the ports are closed, and holes are opened on the outer side of the ends.
[0013] The end of the oil filling hole 7 is closed and has an opening at the end, which is connected to the lubricating oil interface 4; there is an opening at the tail, which is connected to the oil collecting groove 8; the lubricating oil interface 4 is connected to the lubrication system of the press unit.
[0014] The inner side of the cooling water interface 3 is connected to the openings of the straight pipe segments of the head and tail rows of tubes of the water-cooled coil 2, and the outer side is connected to the water inlet pipe and the water return pipe of the cooling pipeline of the press unit.
[0015] The outer arc surface of the copper bearing bush body 1 is inlaid and integrated with the inner arc surface of the steel bearing shell. A plurality of counterbores are symmetrically provided on both sides of the bush opening of the copper bearing bush body 1. Screws and nuts are used to press and fix the copper bearing bush body 1 to the steel bearing shell, and it is combined with the other half of the steel bearing shell to form a bearing device, and the roller of the sugarcane press is placed in the bearing device for operation.
[0016] The beneficial effects of the present utility model.
[0017] 1. The oil collecting grooves are arranged on both sides of the copper bearing shell body near the bearing mouth, and there are two oil filling holes, one long and one short. When the pressing roller of the pressing machine rotates on the inner bearing surface of the bearing shell, sufficient lubrication can be obtained on the contact surface to reduce friction and wear.
[0018] 2. The water-cooled coil is in a serpentine shape and covers the inner bearing surface where the copper bearing shell contacts the pressing roller shaft. By introducing cooling water, it directly cools and dissipates heat from the parts generating heat inside the copper bearing shell. The cooling area is large, the heat dissipation is fast and the effect is good, which can effectively prevent the copper bearing shell from having thermal deformation and causing accidents such as burning the bearing shell and the shaft, and improves the safety of the equipment.
[0019] 3. The water-cooled coil is made of seamless steel pipe or copper pipe bent into a serpentine shape. Using the casting process, it is cast into one body with the copper bearing shell body, which improves the bearing capacity of the copper bearing shell body and isolates the cooling water from the copper bearing shell, avoiding the penetration of the cooling water to the inner bearing surface of the bearing shell, thus affecting the lubrication between the bearing shell and the pressing roller shaft, and improving the safety of the equipment.
[0020] 4. The copper bearing shell body uses an eccentric semi-circular solid body. Square rib plates are arranged on both end faces, and an arc-shaped reinforcing rib is arranged in the middle of the outer arc. It is installed inlaid with the steel bearing housing and tightened with screws and nuts, which improves the strength and service life of the copper bearing shell body and the bearing capacity of the bearing device. And the square rib plates also increase the heat dissipation area of the copper bearing shell, which is beneficial to the heat dissipation of the copper bearing shell.
[0021] The utility model solves the problems that the heat dissipation effect of the copper bearing shell of the bearing device of the inclined adjustment type pressing machine is not good, the penetration of the cooling water affects the lubrication between the bearing shell and the pressing roller shaft, and the insufficient strength of the copper bearing shell will cause fracture, etc. Brief Description of the Drawings
[0022] Figure 1 It is a three-dimensional schematic diagram of the direct-cooling type copper bearing shell of the utility model.
[0023] Figure 2 It is the cross-section of the direct-cooling type copper bearing shell of the utility model.
[0024] Figure 3 It is the axial sectional view of the direct-cooling type copper bearing shell of the utility model.
[0025] Figure 4 It is a three-dimensional schematic diagram of the water-cooled coil of the utility model.
[0026] Figure 5 It is a schematic assembly diagram of the direct-cooling type copper bearing shell, the steel bearing housing and the pressing roller shaft of the pressing machine of the utility model.
[0027] Reference Signs:
[0028] 1 - Copper bearing shell body, 2 - Water-cooled coil, 3 - Cooling water interface, 4 - Lubricating oil interface, 5 - Square rib plate, 6 - Arc-shaped reinforcing rib, 7 - Oil filling hole, 8 - Oil collecting groove. Detailed implementation mode
[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0030] As Figures 1 to 5 shown, a direct-cooled copper bearing bush for the roller of a sugarcane press, the copper bearing bush includes a copper bearing bush body 1, a water-cooling coil 2, a cooling water interface 3, a lubricating oil interface 4, a square rib plate 5, an arc-shaped reinforcing rib 6, an oil filling hole 7, and an oil sump 8.
[0031] The copper bearing bush body 1 and the water-cooling coil 2 are cast integrally using a casting process.
[0032] The copper bearing bush body 1 is an eccentric and semi-circular solid body composed of inner and outer arc surfaces, with a structure where the thickness of the two wicket mouths is thin and the thickness in the middle is relatively thick, making the thickness of the contact bearing area between the bearing bush and the roller shaft thicker, which not only strengthens the strength of the copper bearing bush but also increases the wearable amount of the copper bearing bush, thus extending the service life.
[0033] Square rib plates 5 are arranged on both end faces of the outer arc of the copper bearing bush body 1, and arc-shaped reinforcing ribs 6 are arranged in the middle of the outer arc to enhance the strength of the copper bearing bush, increase the heat dissipation area of the copper bearing bush, and the contact area with the steel bearing shell.
[0034] On the outer side of the upper part and the left and right sides of one end face of the square rib plate 5, there are cooling water interfaces 3, and two lubricating oil interfaces 4 are arranged near both sides of the wicket mouth. The cooling water interfaces 3 are respectively connected to the water inlet pipe and the water return pipe of the cooling pipeline of the press unit to circulate and input and output the cooling water into the cooling water coil 1. The lubricating oil interface 4 is connected to the lubrication system of the press unit to convey the lubricating oil from the oil filling hole 7 into the oil sump 8.
[0035] On the inner arc surfaces near both sides of the wicket mouth of the copper bearing bush body 1, there are closed oil sumps 8 with a wedge-shaped cross-section arranged along the axis, and there are two oil filling holes 7 with different lengths arranged inside near both sides of the wicket mouth, so that the roller shaft can be fully lubricated when running in the bearing bush, reducing wear.
[0036] The water-cooling coil 2 is a coiled pipe bent into a snake shape from seamless steel pipe or copper pipe, concentric with the outer arc of the copper bearing bush body 1, placed between the inner and outer arcs of the copper bearing bush body 1 along the axis, and cast integrally using a casting process, enhancing the strength of the copper bearing bush body.
[0037] The water-cooled coil 2 is serpentine, with the tubes of each row of the coil arranged at equal intervals, in an arc shape with a wrap angle of 100° to 120°. The two ends in the tube length direction extend to the middle position of the square rib plate 5, enabling the cooling water to cover the inner surface of the copper bearing bush in contact with the roll shaft to the greatest extent, directly cooling and dissipating heat from the part where the heat source is generated. The cooling area is large, the heat dissipation is fast and the effect is good, avoiding accidents such as thermal deformation of the copper bearing bush and burning of the bearing bush and the shaft.
[0038] The pipe orifices of the head and tail rows of tubes of the water-cooled coil 2 are on the same side and extend outwards with straight pipe sections on the outer arc surface. The height of the straight pipe sections is the same as that of the square rib plate 5. The ports are closed, and openings are made near the outer side of the ends, which are connected to the cooling water interface 3 of the copper bearing bush body 1, forming an independent, closed and long-loop cooling water channel in the copper bearing bush body 1, completely isolating the cooling water from the copper bearing bush and preventing the cooling water from penetrating into the inner surface of the copper bearing bush and affecting the lubrication between the bearing bush and the roll shaft.
[0039] The copper bearing bush body 1 is inlaid and assembled with the inner arc surface of the steel bearing shell, and the copper bearing bush body 1 is pressed and fixed to the steel bearing shell using screws and nuts to enhance the strength of the copper bearing bush and ensure that the bearing device has sufficient load-bearing capacity. At the same time, when the bearing bush is worn out and cannot be used, only the copper bearing bush can be replaced.
[0040] The working principle of the present utility model is as follows:
[0041] The copper bearing bush body and the water-cooled coil are cast as a whole using a casting process, and the copper bearing bush body is pressed and fixed to the steel bearing shell of the bearing device of the inclined adjustment press using screws and nuts. The outer arc surface, square rib plate and arc-shaped reinforcing rib of the copper bearing bush body are inlaid and assembled with the inner circular surface and both end surfaces of the steel bearing shell, and are combined with the other half of the steel bearing shell to form a bearing device, and the press roll shaft is placed in the bearing device. When the press is working, the roll shaft rotates continuously in the copper bearing bush body at a speed of 3 to 8 r / min and generates heat due to friction. The lubricating oil interface is connected to the lubrication system of the press unit, and the lubricating oil is conveyed from the oil filling hole to the oil sump to lubricate the shaft surface of the roll shaft in contact with the copper bearing bush body, so as to reduce friction and wear. The cooling water interface is connected to the inlet pipe and return pipe of the cooling pipeline of the press unit, and the cooling water is input from one end and output from the other end of the water-cooled coil, completely isolating the cooling water from the copper bearing bush body and preventing water from penetrating into the lubricating oil. And through the water-cooled coil, the inner surface of the copper bearing bush in contact with the roll shaft, that is, the part where the heat source is generated, is directly cooled and dissipated, so as to obtain a better heat dissipation effect.
Claims
1. A direct-cooled copper bearing for a sugarcane press roll, characterized in that: The invention comprises a copper bearing body (1) and a water cooling coil (2); the copper bearing body (1) is an eccentric, semi-circular arc solid body formed by inner and outer arc surfaces; the water cooling coil (2) is concentric with the outer arc of the copper bearing body (1); and the water cooling coil (2) is arranged between the inner and outer arcs of the copper bearing body (1) along the axis.
2. A direct-cooling copper bearing for a sugarcane press roll according to claim 1, characterized in that: The copper bearing shell (1) has a structure with thin thickness at the two shell openings and thicker thickness in the middle; the water-cooling coil (2) is a seamless steel tube or copper tube bent into a serpentine coil, and each row of the coil is arranged at an equal distance and is in an arc shape with an angle of 100° to 120°.
3. A direct-cooling copper bearing for a sugarcane press roll according to claim 1, characterized in that: The copper bearing body (1) and the water cooling coil (2) are an integrated structure, and the water cooling coil (2) forms an independent, closed, long-circuit cooling water channel in the copper bearing body (1).
4. A direct-cooling copper bearing for a sugarcane press roll according to claim 1, characterized in that: The two end surfaces of the outer arc of the bearing shell body (1) are provided with square rib plates (5), the middle part of the outer arc is provided with arc-shaped reinforcing ribs (6), the inner arc surface close to both sides of the shell opening is provided along the axis with a closed oil collecting groove (8) with a wedge-shaped cross section, and two oil filling holes (7) are provided inside the two sides of the shell opening, one long and one short.
5. A direct-cooling copper bearing for a sugarcane press roll according to claim 4, characterized in that: The two ends of the water cooling coil (2) extend to the middle of the square rib plate (5), the pipe openings of the head and tail rows of the water cooling coil (2) are located on the same side, and a straight pipe section extends outward from the arc surface, the height of the straight pipe section is the same as that of the square rib plate (5), the end port is closed, and the outer side of the end head is opened.
6. A direct-cooling copper bearing for a sugarcane press roll according to claim 4, characterized in that: The oil filling hole (7) is closed at the end, and has an opening at the end, which is connected to the lubricating oil interface (4); the opening at the tail is connected to the oil collecting tank (8); and the lubricating oil interface (4) is connected to the lubrication system of the press unit.
7. A direct-cooling copper bearing for a sugarcane press roll according to claim 4, characterized in that: The outer upper part and left and right sides of one end surface of the square rib plate (5) are respectively provided with cooling water interfaces (3), and two lubricating oil interfaces (4) are provided near both sides of the shoe opening.
8. A direct-cooling copper bearing bush for a sugarcane press roll according to claim 7, characterized in that: The inner side of the cooling water interface (3) is connected to the openings of the head and tail straight pipe sections of the water cooling coil (2), and the outer side is connected to the water inlet pipe and the water return pipe of the cooling pipeline of the press unit.
9. A direct-cooling copper bearing for a sugarcane press roll according to claim 1, characterized in that: The outer arc surface of the copper bearing shell body (1) is inlaid with the inner arc surface of the steel bearing shell as a whole; a plurality of countersunk holes are symmetrically arranged on both sides of the shell opening of the copper bearing shell body (1).