Hydraulic energy-saving system for rough and intermediate rolling of rolled steel bars

Abstract

The utility model discloses a steel rolling bar rough and intermediate rolling hydraulic energy-saving system which comprises a heat energy recovery unit, an industrial oil temperature machine and a heat exchange mechanism used for a hydraulic oil tank, the hydraulic oil tank is fixedly installed on a support, a top flange of the hydraulic oil tank is connected with a top cover, and an oil injection port, an oil pumping pipe and an oil return pipe are fixedly arranged on the top cover in a penetrating mode. The heat exchange mechanism comprises a main water inlet pipe, a main water outlet pipe, a housing and at least one snakelike heat exchange pipe, the housing is fixedly arranged on the outer wall of the hydraulic oil tank in a sleeving mode, and the snakelike heat exchange pipes are all located in the hydraulic oil tank; according to the utility model, a low-temperature heat exchange medium is input into the housing and the snake-shaped heat exchange pipe through the heat energy recovery unit, heat exchange can be carried out between the outer side of the hydraulic oil tank and the outer wall of the hydraulic oil tank, and heat exchange can be carried out between the inner side of the hydraulic oil tank and hydraulic oil, so that the hydraulic oil is quickly cooled; and in addition, heat of the hydraulic oil can be recycled, and waste of heat energy is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic system, concretely is rough medium rolling hydraulic energy -conserving system of steel bar. BACKGROUND

[0002] In the rough medium rolling process of steel bar, many equipment (such as rough rolling mill, finishing mill, cutting plate machine etc.) all adopt hydraulic system and corresponding hydraulic actuator to drive. Because the rough medium rolling environment temperature of steel bar is high, so the hydraulic actuator will absorb a large amount of ambient heat in addition to the heat generated by itself in the operation process, leading to the high oil temperature of hydraulic system, and the high temperature of hydraulic oil is not recycled in the hydraulic system of the rough medium rolling of steel bar at present, still need to use high -power heat dissipation fan and other heat dissipation equipment to cool the hydraulic oil, leading to more energy waste, and there is room for improvement. SUMMARY

[0003] The utility model discloses a rough medium rolling hydraulic energy -conserving system of steel bar to solve the problem in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] Rough medium rolling hydraulic energy -conserving system of steel bar, including heat recovery unit, industrial oil temperature machine and the heat exchange mechanism for hydraulic oil tank, the hydraulic oil tank fixed mounting is in support, the top flange of the hydraulic oil tank is connected with the top cover, is fixed and is arranged in the oil filler, the oil extraction pipe and the oil return pipe on the top cover, the heat exchange mechanism includes main inlet pipe, main outlet pipe, cover and at least one serpentine heat exchange pipe, the cover is fixedly covered on the outer wall of hydraulic oil tank, the serpentine heat exchange pipe all are located in the hydraulic oil tank, the cover and serpentine heat exchange pipe all with main inlet pipe and main outlet pipe are communicated, the water inlet end of main inlet pipe is connected with two branch inlet pipes through the tee joint, the water outlet end of main outlet pipe is connected with two branch outlet pipes through the tee joint, the branch inlet pipe and branch outlet pipe all are installed with valve, heat recovery unit and industrial oil temperature machine are communicated with corresponding branch inlet pipe and branch outlet pipe through pipeline.

[0006] As a further scheme of the utility model: the outer wall of the cover is fixedly communicated with first inlet pipe near the top, the first inlet pipe is communicated with main inlet pipe, the outer wall bottom of the cover is fixedly communicated with first outlet pipe, the first outlet pipe is communicated with main outlet pipe.

[0007] As a further scheme of the utility model: the outer wall of the hydraulic oil tank and the corresponding place of both ends of serpentine heat exchange pipe are fixedly provided with connecting pipe, main inlet pipe, main outlet pipe and corresponding connecting pipe are communicated, one end in the hydraulic oil tank of connecting pipe and the corresponding end flange of serpentine heat exchange pipe are connected.

[0008] As a further scheme of the utility model: the top of the top cover is fixedly installed with a speed reducer motor, the top of the top cover is rotatably penetrated with a stirring shaft, the output shaft of the speed reducer motor is fixedly connected with the top end of the stirring shaft through a shaft coupling, and the bottom end outer wall of the stirring shaft is fixedly connected with a plurality of stirring blades.

[0009] As a further scheme of the utility model: the outer wall of the hydraulic oil tank is covered with a heat preservation layer, and the cover shell is located at the inner side of the heat preservation layer.

[0010] As a further scheme of the utility model: the end of the oil inlet is installed with an air filter element, one end of the oil extraction pipe in the hydraulic oil tank is installed with a stainless steel filter element, one end of the oil return pipe outside the hydraulic oil tank is connected with a filtering system, and the bottom of the hydraulic oil tank is installed with a blowdown port.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1、in the utility model, the low-temperature heat exchange medium is input into the cover shell and the serpentine heat exchange pipe through the heat energy recovery unit, can exchange heat with the outer wall of the hydraulic oil tank from the outer side of the hydraulic oil tank, and can exchange heat with the hydraulic oil from the inner side of the hydraulic oil tank, thereby rapidly cooling the hydraulic oil, ensuring the stability of the hydraulic system operation, and recovering the heat of the hydraulic oil, reducing the waste of heat energy.

[0013] 2、the utility model is provided with the industrial oil temperature machine, when the hydraulic system is cold started, the heated heat exchange medium is input into the cover shell and the serpentine heat exchange pipe through the industrial oil temperature machine, the hydraulic oil in the hydraulic oil tank can be rapidly heated to the required temperature, thereby effectively improving the cold start efficiency of the hydraulic system, and the use effect is good. ACCURACY OF DRAWINGS

[0014] Figure 1 It is a structure block diagram of the rough and medium rolling hydraulic energy-saving system of the rolled steel bar.

[0015] Figure 2 It is a structure schematic view of the hydraulic oil tank in the rough and medium rolling hydraulic energy-saving system of the rolled steel bar.

[0016] Figure 3 It is Figure 2 a sectional view.

[0017] The bracket 1, the hydraulic oil tank 2, the top cover 3, the oil inlet 4, the air filter element 5, the oil suction pipe 6, the stainless steel filter element 7, the oil return pipe 8, the blowdown 9, the cover 10, the first water inlet pipe 11, the first water outlet pipe 12, the serpentine heat exchange pipe 13, the connecting pipe 14, the main water inlet pipe 15, the branch water inlet pipe 16, the main water outlet pipe 17, the branch water outlet pipe 18, the valve 19, the thermal insulation layer 20, the speed reducer motor 21, the stirring shaft 22, the stirring blade 23, the heat exchange mechanism 24, the heat energy recovery unit 25 and the industrial oil temperature machine 26. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figures 1 to 3 In the embodiments of the present application, the rough rolling hydraulic energy-saving system for rolled steel bars comprises a heat energy recovery unit 25, an industrial oil temperature machine 26 and a heat exchange mechanism 24 for a hydraulic oil tank 2. The hydraulic oil tank 2 is fixedly installed on a bracket 1. A top flange of the hydraulic oil tank 2 is connected with a top cover 3. An oil inlet 4, an oil suction pipe 6 and an oil return pipe 8 are fixedly and penetratingly arranged on the top cover 3. The heat exchange mechanism 24 comprises a main water inlet pipe 15, a main water outlet pipe 17, a cover 10 and at least one serpentine heat exchange pipe 13. The cover 10 is fixedly sleeved on an outer wall of the hydraulic oil tank 2. The serpentine heat exchange pipes 13 are all located in the hydraulic oil tank 2. The cover 10 and the serpentine heat exchange pipes 13 are in communication with the main water inlet pipe 15 and the main water outlet pipe 17. The water inlet end of the main water inlet pipe 15 is connected with two branch water inlet pipes 16 through a tee joint. The water outlet end of the main water outlet pipe 17 is connected with two branch water outlet pipes 18 through a tee joint. Valves 19 are installed on the branch water inlet pipes 16 and the branch water outlet pipes 18. The heat energy recovery unit 25 and the industrial oil temperature machine 26 are in communication with the corresponding branch water inlet pipes 16 and branch water outlet pipes 18 through pipelines.

[0020] The utility model discloses a heat energy recovery unit 25 is arranged on the outer wall of the hydraulic oil tank 2, and the heat energy recovery unit 25 is connected with the outer wall of the hydraulic oil tank 2 through the first water inlet pipe 11 and the first water outlet pipe 12, and the heat energy recovery unit 25 is connected with the outer wall of the hydraulic oil tank 2 through the first water inlet pipe 11 and the first water outlet pipe 12.

[0021] Specifically combined Figure 2 And Figure 3 In an embodiment of the utility model, the outer wall of the cover 10 is fixedly connected with the first water inlet pipe 11 near the top, the first water inlet pipe 11 is communicated with the main water inlet pipe 15, the outer wall of the cover 10 is fixedly connected with the first water outlet pipe 12 at the bottom, and the first water outlet pipe 12 is communicated with the main water outlet pipe 17.

[0022] Through the first water outlet pipe 12 and the first water inlet pipe 11, the cover 10 is communicated with the main water inlet pipe 15 and the main water outlet pipe 17, so that the cover 10 is conveniently communicated with the heat energy recovery unit 25 or the industrial oil temperature machine 26.

[0023] Specifically combined Figure 3 In an embodiment of the utility model, the outer wall of the hydraulic oil tank 2 is fixedly provided with the connecting pipe 14 at the corresponding position of both ends of the serpentine heat exchange pipe 13, the main water inlet pipe 15 and the main water outlet pipe 17 are communicated with the corresponding connecting pipe 14, and one end of the connecting pipe 14 in the hydraulic oil tank 2 is flange-connected with the corresponding end of the serpentine heat exchange pipe 13.

[0024] Through the first water outlet pipe 12 and the first water inlet pipe 11, the cover 10 is communicated with the main water inlet pipe 15 and the main water outlet pipe 17, so that the cover 10 is conveniently communicated with the heat energy recovery unit 25 or the industrial oil temperature machine 26.

[0025] Specifically combined Figure 1 And Figure 2In an embodiment of the utility model, the top of top cover 3 is fixedly installed with speed reducer motor 21, the top of top cover 3 is rotatably provided with stirring shaft 22, the output shaft of speed reducer motor 21 is fixedly connected with the top end of stirring shaft 22 through shaft coupling, the bottom end outer wall of stirring shaft 22 is fixedly connected with a plurality of stirring blades 23.

[0026] By starting speed reducer motor 21 drive stirring shaft 22 and stirring blade 23 rotation, can agitate the hydraulic oil in hydraulic oil tank 2, to make the temperature distribution of hydraulic oil more uniform.

[0027] Specifically combine Figure 2 And Figure 3 In an embodiment of the utility model, the outer wall of hydraulic oil tank 2 is covered with heat preservation layer 20, and the shell 10 is located on the inner side of heat preservation layer 20, so that the heat exchange of hydraulic oil tank 2 and shell 10 with the outside air is less.

[0028] Specifically combine Figure 3 In an embodiment of the utility model, the end of oil inlet 4 is installed with air filter element 5, to avoid the dust in the outside air from oil inlet 4 a large amount of into hydraulic oil tank 2, the one end of oil suction pipe 6 in hydraulic oil tank 2 is installed with stainless steel filter element 7, to filter the hydraulic oil extracted by oil suction pipe 6, the one end of oil return pipe 8 outside hydraulic oil tank 2 is connected with filter system, and the bottom of hydraulic oil tank 2 is installed with blow-off port 9.

[0029] Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A hydraulic energy-saving system for roughing and intermediate rolling of steel bars, characterized in that: The system includes a heat recovery unit (25), an industrial oil temperature controller (26), and a heat exchange mechanism (24) for a hydraulic oil tank (2). The hydraulic oil tank (2) is fixedly mounted on a bracket (1). A top cover (3) is connected to the top flange of the hydraulic oil tank (2). An oil inlet (4), an oil extraction pipe (6), and an oil return pipe (8) are fixedly installed on the top cover (3). The heat exchange mechanism (24) includes a main water inlet pipe (15), a main water outlet pipe (17), a casing (10), and at least one serpentine heat exchange tube (13). The casing (10) is fixedly fitted onto the outer wall of the hydraulic oil tank (2). The serpentine heat exchange tube... All pipes (13) are located inside the hydraulic oil tank (2). The cover (10) and the serpentine heat exchange pipe (13) are connected to the main water inlet pipe (15) and the main water outlet pipe (17). The water inlet end of the main water inlet pipe (15) is connected to two branch water inlet pipes (16) through a tee. The water outlet end of the main water outlet pipe (17) is connected to two branch water outlet pipes (18) through a tee. Valves (19) are installed on both the branch water inlet pipes (16) and the branch water outlet pipes (18). The heat recovery unit (25) and the industrial oil temperature controller (26) are connected to the corresponding branch water inlet pipes (16) and branch water outlet pipes (18) through pipelines.

2. The hydraulic energy-saving system for roughing and intermediate rolling of steel bars according to claim 1, characterized in that: The outer wall of the cover (10) is fixedly connected to a first water inlet pipe (11) near the top, and the first water inlet pipe (11) is connected to the main water inlet pipe (15). The bottom of the outer wall of the cover (10) is fixedly connected to a first water outlet pipe (12), and the first water outlet pipe (12) is connected to the main water outlet pipe (17).

3. The hydraulic energy-saving system for roughing and intermediate rolling of steel bars according to claim 1, characterized in that: Connecting pipes (14) are fixedly installed on the outer wall of the hydraulic oil tank (2) and at the corresponding ends of the serpentine heat exchange tube (13). The main water inlet pipe (15) and the main water outlet pipe (17) are connected to the corresponding connecting pipes (14). One end of the connecting pipe (14) located inside the hydraulic oil tank (2) is connected to the corresponding flange of the serpentine heat exchange tube (13).

4. The hydraulic energy-saving system for roughing and intermediate rolling of steel bars according to claim 1, characterized in that: A geared motor (21) is fixedly installed on the top of the top cover (3). A stirring shaft (22) is rotatably passed through the top of the top cover (3). The output shaft of the geared motor (21) is fixedly connected to the top end of the stirring shaft (22) through a coupling. Multiple stirring blades (23) are fixedly connected to the bottom outer wall of the stirring shaft (22).

5. The hydraulic energy-saving system for roughing and intermediate rolling of steel bars according to claim 1, characterized in that: The outer wall of the hydraulic oil tank (2) is covered with a heat insulation layer (20), and the cover (10) is located inside the heat insulation layer (20).

6. The hydraulic energy-saving system for roughing and intermediate rolling of steel bars according to claim 1, characterized in that: An air filter element (5) is installed at the end of the oil inlet (4), a stainless steel filter element (7) is installed at one end of the oil extraction pipe (6) inside the hydraulic oil tank (2), a filtration system is connected at one end of the return oil pipe (8) outside the hydraulic oil tank (2), and a drain port (9) is installed at the bottom of the hydraulic oil tank (2).

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