CN215257782U - Oil return device for rolling mill - Google Patents

Abstract

The utility model belongs to the lubricated field of mechanical equipment, concretely relates to oil returning device for rolling mill. The utility model discloses a rolling mill housing, screw down, compensating beam and first oil return pipeline, the screw down and the screw down screw thread fit position be provided with rolling mill housing oil outlet end, the one end and the rolling mill housing oil outlet end intercommunication of first oil return pipeline, first oil return pipeline is provided with the slope, still includes lubricating oil groove, oil pump, mends pressure differential device and second oil return pipeline; the lubricating oil output end is communicated with the oil pump input end through a first circulation pipe, the oil pump output end is communicated with the oil inlet end of the rolling mill housing through a second circulation pipe, one end, far away from the oil outlet end of the rolling mill housing, of the first oil return pipeline is communicated with one end of a second oil return pipeline, and the pressure compensating device is arranged on the first oil return pipeline. The utility model provides a when returning oil pipe way area slope in the rolling mill, lead to the obstructed problem of oil return because of long-pending oily.

Description

Oil return device for rolling mill

Technical Field

The utility model belongs to the lubricated field of mechanical equipment, concretely relates to oil returning device for rolling mill.

Background

In traditional mechanical equipment lubrication, the lubrication mode that generally adopts according to the operating mode requirement has: glyceride lubrication, oil sump lubrication, thin oil circulation lubrication and the like. Wherein the thin oil circulating lubrication structure is as follows: an oil inlet pipeline and an oil return pipeline are arranged at a mechanical device to be lubricated, and when the oil inlet pipeline and the oil return pipeline are smooth, a sufficient lubricating effect can be realized; however, in reality, due to the requirement for installation of all parts of the equipment in a matched manner, the oil return pipeline is often set to have a slope to realize installation of the equipment, and lubricating oil in the oil return pipeline with the slope needs to climb at the moment, so that the problem of unsmooth oil return due to oil accumulation can occur, and the normal operation of production is influenced. If the rolling mill comprises a rolling mill housing, a pressing screw nut, a pressing screw rod, a balance beam and an oil return pipe, wherein the rolling mill housing is used for installing the pressing screw nut, the pressing screw nut is in threaded fit with the pressing screw rod, the threaded fit position of the pressing screw nut and the pressing screw rod needs to be lubricated, the balance beam is installed on the rolling mill housing, the oil outlet end of the rolling mill housing is arranged at the position where the pressing screw nut is in threaded fit with the pressing screw nut, the position of the balance beam in the vertical direction is higher than that of the oil outlet end of the rolling mill housing, the oil return pipe is often connected to the balance beam, and therefore the oil return pipe in the structure is often set to have a slope, and the problem that oil return is unsmooth due to oil accumulation can occur.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the problem of when oil return pipeline takes the slope in the rolling mill, lead to the oil return unsmooth because of long-pending oily problem is solved.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes: the oil return device for the rolling mill comprises a rolling mill housing, a pressing screw nut, a pressing screw rod, a balance beam and a first oil return pipeline, wherein the pressing screw nut is connected to the rolling mill housing, the pressing screw rod is in threaded fit with the pressing screw nut, the balance beam is connected to the rolling mill housing, an oil outlet end of the rolling mill housing is arranged at the position where the pressing screw rod is in threaded fit with the pressing screw nut, the position of the balance beam is higher than the position of the oil outlet end of the rolling mill housing in the vertical direction, the first oil return pipeline is connected to the balance beam, one end of the first oil return pipeline is communicated with the oil outlet end of the rolling mill housing, and the first oil return pipeline is provided with a slope and further comprises a lubricating oil groove, an oil pump, a pressure difference compensating device and a second oil return pipeline; the lubricating oil groove is provided with a lubricating oil output end, the lubricating oil output end is communicated with an oil pump input end through a first circulation pipe, the oil pump output end is communicated with an oil inlet end of the rolling mill housing through a second circulation pipe, one end, far away from an oil outlet end of the rolling mill housing, of the first oil return pipeline is communicated with one end of a second oil return pipeline, the other end of the second oil return pipeline is communicated with the lubricating oil input end, and the pressure compensating device is arranged on the first oil return pipeline.

Furthermore, the pressure difference compensating device is a through pipe, one end of the through pipe is communicated with the first oil return pipeline, and the other end of the through pipe is communicated with the atmosphere.

Furthermore, the pressure compensating device comprises a pressure sensor, a pressure difference control valve and a control device, wherein the pressure sensor and the pressure difference control valve are arranged on the first oil return pipeline, and the pressure sensor, the pressure difference control valve and the control device are electrically connected.

Furthermore, pressure gauges are arranged on the first oil return pipeline and the second oil return pipeline.

And one end of the flow dividing pipe is communicated with the second flow through pipe, and the other end of the flow dividing pipe is communicated with the oil inlet end of the mill housing.

The utility model discloses an aspect makes the cooperation department of pushing down the screw and pushing down the lead screw through the pipeline circulation and has obtained good lubrication treatment, and on the other hand is provided with on the first return oil pipeline that the oil return slope is big and cause the oil return not smooth and poor device, because the pressure adjustment of mending poor device to make the fluid in the first return oil pipeline smoothly flow, solved when returning oil pipeline area slope in the rolling mill, lead to the unobstructed problem of oil return because of long-pending oil.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of the pressure difference compensating device of the present invention including a pressure sensor, a pressure difference control valve and a control device;

FIG. 3 is a schematic structural diagram of the first oil return line and the second oil return line both provided with pressure gauges;

description of reference numerals:

1. a rolling mill housing; 11. an oil inlet end of the mill housing; 12. the oil outlet end of the mill housing; 2. pressing down a nut; 3. pressing down the screw rod; 4. a balance beam; 5. a lubricating oil groove; 51. a lubricant output end; 52. a lubricant input; 6. an oil pump; 61. an oil pump output end; 62. an oil pump input; 7. a pressure difference compensating device; 71. a pressure sensor; 72. a differential pressure control valve; 73. a control device; 8. a pressure gauge; 9. a shunt tube; 100. a first flow pipe; 200. a second flow pipe; 300. a first oil return line; 400. a second oil return line.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; 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 in specific cases to those skilled in the art.

As shown in fig. 1, the oil return device for the rolling mill comprises a rolling mill housing 1, a pressing screw nut 2, a pressing screw rod 3, a balance beam 4 and a first oil return pipeline 300, wherein the pressing screw nut 2 is connected to the rolling mill housing 1, the pressing screw rod 3 is in threaded fit with the pressing screw nut 2, the balance beam 4 is connected to the rolling mill housing 1, a rolling mill housing oil outlet end 12 is arranged at the position where the pressing screw rod 3 is in threaded fit with the pressing screw nut 2, the position of the balance beam 4 is higher than the position of the rolling mill housing oil outlet end 12 in the vertical direction, the first oil return pipeline 300 is connected to the balance beam 4, one end of the first oil return pipeline 300 is communicated with the rolling mill housing oil outlet end 12, the first oil return pipeline 300 is provided with a slope, and in addition, the device further comprises a lubricating oil groove 5, an oil pump 6, a pressure compensating device 7 and a second oil return pipeline 400; the lubricating oil groove 5 is provided with a lubricating oil output end 51, the lubricating oil output end 51 is communicated with an oil pump input end 62 through a first circulation pipe 100, the oil pump output end 61 is communicated with an oil inlet end 11 of the rolling mill housing through a second circulation pipe 200, one end of the first oil return pipeline 300, which is far away from the oil outlet end 12 of the rolling mill housing, is communicated with one end of a second oil return pipeline 400, the other end of the second oil return pipeline 400 is communicated with a lubricating oil input end 52, and the pressure compensating difference device 7 is arranged on the first oil return pipeline 300.

In order to specify a specific structure of the pressure difference compensation device 7, the pressure difference compensation device 7 is a through pipe, one end of the through pipe is communicated with the first oil return pipeline 300, and the other end of the through pipe is used for being communicated with the atmosphere. In the oil line circulation of the rolling mill, the pressure in the line is much less than atmospheric pressure. The working process of the pressure difference compensating device 7 with the structure is as follows: when the oil circulates to the oil outlet end 12 of the mill housing, the atmospheric pressure in the through pipe is far greater than the pressure in the first oil return pipe 300, so that the first oil return pipe 300 is filled with the oil preferentially to form vacuum, and the oil in the first oil return pipe 300 can smoothly flow into the second oil return pipe 400 under the atmospheric pressure of the through pipe due to the fact that the atmospheric pressure in the through pipe and the first oil return pipe 300 always form pressure difference, so that the first oil return pipe 300 with the gradient has no oil accumulation.

The length and angle set for the through pipe 7 should be adapted and determined according to the oil pressure in the first oil return line 300.

In order to specify another specific structure of the differential pressure compensating device 7, the differential pressure compensating device 7 includes a pressure sensor 71, a differential pressure control valve 72 and a control device 73, the pressure sensor 71 and the differential pressure control valve 72 are both disposed on the first oil return line 300, and the pressure sensor 71, the differential pressure control valve 72 and the control device 73 are electrically connected. The working process of the pressure difference compensating device 7 with the structure is as follows: when the pipeline circulates until the oil reaches the oil outlet end 12 of the mill housing, the pressure sensor 71 detects the oil pressure, and if the oil pressure does not reach the pressure required by the climbing of the oil, the control device controls the differential pressure control valve 72 to be in a closed state; when the oil pressure reaches the pressure value required by climbing, the control device controls the differential pressure control valve 72 to open, and the oil in the first oil return pipeline 300 smoothly reaches the second oil return pipeline 400, so that no oil accumulation is generated in the first oil return pipeline 300 through the linkage control.

In order to determine real-time pressure detection of the first oil return pipeline 300 and the second oil return pipeline 400 and facilitate the work of the pressure difference compensation device 7, pressure gauges 8 are arranged on the first oil return pipeline 300 and the second oil return pipeline 400.

In order to enable the pipeline circulation to be more efficient, the lubrication of the matching part of the screw pressing nut 2 and the screw pressing screw rod 3 is more reasonable, the shunt pipe 9 is introduced, one end of the shunt pipe 9 is communicated with the second through pipe 200, and the other end of the shunt pipe 9 is communicated with the oil inlet end 11 of the mill housing.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art can use the above-mentioned technical contents to change or modify the present invention into equivalent embodiments with equivalent changes, but all those persons do not depart from the technical contents of the present invention, and any simple modification, equivalent changes and modifications made to the above embodiments according to the essence of the present invention still belong to the protection scope of the present invention.

Claims (5)

1. A oil returning device for a rolling mill, including rolling mill housing (1), screw (2) push down, lead screw (3), compensating beam (4) and first oil return pipeline (300), push down screw (2) and connect on rolling mill housing (1), push down lead screw (3) and screw (2) screw-thread fit down, compensating beam (4) are connected on rolling mill housing (1), push down lead screw (3) and screw (2) screw-thread fit's position and be provided with rolling mill housing play oil end (12), the position of compensating beam (4) is higher than the position of rolling mill housing play oil end (12) in vertical direction, first oil return pipeline (300) is connected on compensating beam (4), the one end and the housing play oil end (12) intercommunication of first oil return pipeline (300), first oil return pipeline (300) are provided with the slope, its characterized in that, still include lubricating oil groove (5), The oil pump (6), the pressure difference compensating device (7) and the second oil return pipeline (400);

lubricating oil groove (5) are provided with lubricating oil output end (51), lubricating oil output end (51) are through first runner pipe (100) and oil pump input end (62) intercommunication, oil pump output end (61) are through second runner pipe (200) and rolling mill housing oil feed end (11) intercommunication, and the one end that rolling mill housing oil outlet end (12) was kept away from in first oil return pipeline (300) is communicate with the one end of second oil return pipeline (400), and the other end and the lubricating oil input end (52) intercommunication of second oil return pipeline (400), mend differential pressure device (7) and set up on first oil return pipeline (300).

2. Oil return device for rolling mills according to claim 1, characterized in that said pressure compensating device (7) is a through pipe, one end of which communicates with the first oil return line (300) and the other end of which is adapted to communicate with the atmosphere.

3. Oil return device for a rolling mill according to claim 1, characterized in that said pressure compensating device (7) comprises a pressure sensor (71), a pressure difference control valve (72) and a control device (73), said pressure sensor (71) and said pressure difference control valve (72) being arranged on the first oil return line (300), said pressure sensor (71), said pressure difference control valve (72) and said control device (73) being electrically connected.

4. The oil return device for a rolling mill according to claim 1, characterized in that a pressure gauge (8) is provided on each of the first oil return line (300) and the second oil return line (400).

5. The oil return device for the rolling mill according to any one of claims 1 to 4, characterized by further comprising a shunt pipe (9), wherein one end of the shunt pipe (9) is communicated with the second flow pipe (200), and the other end of the shunt pipe (9) is communicated with the oil inlet end (11) of the rolling mill housing.

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