Energy-saving servo hydraulic control equipment for metallurgy

Abstract

The utility model discloses energy-saving servo hydraulic control equipment for metallurgy, which relates to the technical field of metallurgy and particularly comprises a hydraulic oil tank, a servo motor and a hydraulic pump connected with the tail end of an output shaft of the servo motor, an automatic liquid supplementing structure is arranged at the liquid inlet end of the hydraulic oil tank, and a screening structure is arranged at the backflow end of the hydraulic oil tank. The liquid inlet end of the hydraulic pump is connected with the liquid outlet end of the hydraulic oil tank through a first connecting pipe, and the liquid outlet end of the hydraulic pump is connected with the liquid inlet end of the hydraulic execution element through an impurity removal structure. The impurity removal structure is used for filtering hydraulic oil discharged by the hydraulic pump, it is avoided that in the operation process of the hydraulic pump, metal particles generated due to abrasion increase the operation resistance of the hydraulic pump, and during pressure relief, the distance between the lifting plate and the filter element can be increased, so that part of redundant hydraulic oil can be temporarily stored in an inner cavity of the barrel body, and the service life of the hydraulic pump is prolonged. And the speed of stabilizing the pressure in the hydraulic oil pipeline is increased, so that the servo hydraulic control equipment can operate efficiently, and the energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to metallurgical technology field, concretely is a kind of energy-saving metallurgical servo hydraulic control equipment. BACKGROUND

[0002] Energy-saving metallurgical servo hydraulic control equipment is an advanced equipment combined with servo motor and hydraulic technology, mainly used in high-precision, high efficiency and high energy-saving hydraulic control in metallurgical industry. It realizes accurate adjustment to the pressure, flow and speed of hydraulic system through the accurate control of servo motor, so as to greatly reduce energy consumption and improve production efficiency. In servo hydraulic control equipment, hydraulic oil tank and hydraulic pump, servo motor, hydraulic valve and other components work together to ensure that the equipment can accurately control hydraulic actuator.

[0003] At present, after completing work, hydraulic oil directly flows back to hydraulic oil tank, but hydraulic oil is prone to deterioration under the influence of high temperature and other factors during use. The deteriorated hydraulic oil directly flowing back to the hydraulic oil tank can contaminate other hydraulic oil in the hydraulic oil tank. When the hydraulic oil deteriorates, the viscosity increases, increasing the operating resistance of the servo motor and the energy consumption of the servo hydraulic control equipment. Moreover, during the flow of hydraulic oil in the hydraulic pump, metal particles generated by wear during the operation of the hydraulic pump can enter the hydraulic oil, which can increase the operating resistance of the servo hydraulic control equipment. Therefore, the present application proposes an energy-saving metallurgical servo hydraulic control equipment. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of energy-saving metallurgical servo hydraulic control equipment, solves the problem that the above background technology cannot be removed from the backflow viscosity that does not meet the requirements of hydraulic oil;Metal particles generated by wear during the operation of the hydraulic pump can enter the hydraulic oil, which can increase the operating resistance of the servo hydraulic control equipment.

[0005] The utility model provides the following technical scheme: an energy-saving metallurgical servo hydraulic control equipment, comprising a hydraulic oil tank, a servo motor and a hydraulic pump connected to the end of the output shaft of the servo motor, the liquid inlet end of the hydraulic oil tank is provided with an automatic liquid supplementing structure, the backflow end of the hydraulic oil tank is provided with a screening structure, the liquid inlet end of the hydraulic pump is connected to the liquid outlet end of the hydraulic oil tank through a connecting pipe one, and the liquid outlet end of the hydraulic pump is connected to the liquid inlet end of the hydraulic actuator through a dedusting structure.

[0006] The screening structure comprises a hydraulic oil filter, a return pipe and a waste liquid collecting box, one end of the return pipe is connected with the liquid outlet end of the hydraulic executing element, the other end of the return pipe is provided with a viscosity sensor, the other end of the return pipe is connected with the liquid inlet end of the hydraulic oil filter through a return branch pipe one, and the other end of the return pipe is connected with the liquid inlet end of the waste liquid collecting box through a return branch pipe two.

[0007] The impurity removing structure comprises a barrel, a filter core is fixed in the inner cavity of the barrel, a lifting plate is movably connected in the inner cavity of the barrel and is located above the filter core, the lifting plate is connected with the top of the inner cavity of the barrel through an electric telescopic rod, a connecting pipe three and a connecting pipe four are arranged on the top of the barrel, one end of the connecting pipe three is connected with the liquid outlet end of the hydraulic pump, the other end of the connecting pipe three extends below the filter core, one end of the connecting pipe four is located between the lifting plate and the filter core, the lifting plate is movably connected with the connecting pipe four, and the other end of the connecting pipe four is connected with the liquid inlet end of the hydraulic executing element.

[0008] Preferably, the return branch pipe one is provided with an electric ball valve one near one end of the return pipe, and the return branch pipe two is provided with an electric ball valve two near one end of the return pipe.

[0009] Preferably, one end of the connecting pipe four is provided with a pressure relief pipe, one end of the pressure relief pipe is provided with a pressure relief valve, and the other end of the pressure relief pipe extends to the top end of the inner cavity of the hydraulic oil tank.

[0010] Preferably, the bottom end of the inner cavity of the barrel is provided with a sealing bottom cover, and the sealing bottom cover is connected with the barrel in a detachable connection mode.

[0011] Preferably, the automatic liquid supplementing structure comprises a liquid supplementing barrel arranged on the top of the hydraulic oil tank and a buoyant block arranged in the inner cavity of the hydraulic oil tank, the bottom of the inner cavity of the liquid supplementing barrel is fixedly connected with a connecting pipe, the other end of the connecting pipe extends to the top end of the inner cavity of the hydraulic oil tank through the liquid inlet end of the hydraulic oil tank, the inner cavity of the hydraulic oil tank is fixedly connected with a positioning rod, the buoyant block is movably connected with the positioning rod, and the buoyant block is located below the connecting pipe and is matched with the connecting pipe.

[0012] Preferably, one side of the top of the liquid supplementing barrel is provided with a sealing plug, and a liquid level sensor and an alarm are arranged on the barrel wall of the liquid supplementing barrel.

[0013] Compared with the prior art, the automatic liquid supplementing device has the following beneficial effects:

[0014] 1. The energy-saving metallurgical servo hydraulic control device utilizes the impurity removing structure to filter the hydraulic oil discharged by the hydraulic pump, avoids the increase of the operating resistance of the present application due to the metal particles generated in the operating process of the hydraulic pump, and increases the distance between the lifting plate and the filter element when pressure relief, so that the excess part of the hydraulic oil can be temporarily stored in the inner cavity of the barrel, accelerates the pressure stability speed in the hydraulic oil pipeline, enables the servo hydraulic control device to operate efficiently, and thus reduces the energy consumption of the present application.

[0015] 2. The energy-saving metallurgical servo hydraulic control device, through the setting of the screening structure, can detect the viscosity of the backflow hydraulic oil, and remove the hydraulic oil with viscosity not meeting the requirements, avoid the pollution of the hydraulic oil in the hydraulic oil tank and avoid the increase of the operating resistance of the servo motor, so that the servo hydraulic control device can operate efficiently. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the structure of the present application.

[0017] Figure 2 It is a back view of the structure of the present application.

[0018] Figure 3 It is a schematic view of the buoyancy block of the structure of the present application.

[0019] Figure 4 It is a schematic view of the barrel from the bottom of the structure of the present application.

[0020] Figure 5 It is a schematic view of the inside of the barrel of the structure of the present application.

[0021] In the figure: 1, hydraulic oil tank; 2, liquid supplementing barrel; 3, sealing plug; 4, liquid level sensor; 5, pressure relief pipe; 6, hydraulic oil filter; 7, backflow pipe; 8, viscosity sensor; 9, servo motor; 10, hydraulic pump; 11, connecting pipe one; 12, barrel; 13, connecting pipe four; 14, pressure relief valve; 15, electric ball valve two; 16, backflow branch pipe two; 17, waste liquid collecting box; 18, backflow branch pipe one; 19, alarm; 20, electric ball valve one; 21, connecting pipe five; 22, sealing bottom cover; 23, electric telescopic rod; 24, lifting plate; 25, connecting pipe three; 26, filter element; 27, connecting pipe; 28, buoyancy block; 29, positioning rod. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of 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.

[0023] The present application provides an embodiment: please refer to Figures 1-5 The utility model provides a kind of energy-saving metallurgical servo hydraulic control equipment, including hydraulic oil tank 1, servo motor 9 and the hydraulic pump 10 connected with servo motor 9 output shaft end, the liquid inlet of hydraulic oil tank 1 is provided with automatic liquid supplement structure, and automatic liquid supplement structure includes the liquid supplement barrel 2 being arranged at the top of hydraulic oil tank 1 and the buoyancy block 28 being arranged in the inner chamber of hydraulic oil tank 1, the side of the top of liquid supplement barrel 2 is provided with sealing plug 3, when removing sealing plug 3, hydraulic oil can be filled into liquid supplement barrel 2, the liquid supplement of liquid supplement barrel 2 is realized, and the bottom of the inner chamber of liquid supplement barrel 2 is fixedly connected with connecting pipe 27, another end of connecting pipe 27 extends to the top of the inner chamber of hydraulic oil tank 1 by the liquid inlet of hydraulic oil tank 1, by the setting of connecting pipe 27, when the bottom of connecting pipe 27 is in open state, hydraulic oil in liquid supplement barrel 2 can fall into hydraulic oil tank 1 under the action of gravity, and the liquid supplement of hydraulic oil tank 1 is realized.

[0024] The inner chamber of hydraulic oil tank 1 is fixedly connected with positioning rod 29, and buoyancy block 28 is movably connected with positioning rod 29, and buoyancy block 28 is located below connecting pipe 27 and is adapted with connecting pipe 27, by the setting of buoyancy block 28, buoyancy block 28 will be subjected to buoyancy in hydraulic oil, in use, buoyancy block 28 is tightly attached to the bottom of connecting pipe 27 under the action of buoyancy, and the plugging of connecting pipe 27 is realized;When the liquid level of hydraulic oil in hydraulic oil tank 1 is reduced, buoyancy block 28 moves downward, and buoyancy block 28 is separated from connecting pipe 27, at this time, the bottom of connecting pipe 27 is in open state, and hydraulic oil in liquid supplement barrel 2 can fall into hydraulic oil tank 1 under the action of gravity, to realize the automatic liquid supplement of hydraulic oil tank 1, until the liquid level of hydraulic oil in hydraulic oil tank 1 restores to initial state.

[0025] Liquid level sensor 4 and alarm 19 are arranged on the barrel wall of liquid supplement barrel 2, liquid level sensor 4 is used to detect the liquid level of hydraulic oil in liquid supplement barrel 2 in real time, when liquid supplement barrel 2 needs to supplement hydraulic oil, alarm 19 works, so that staff can supplement hydraulic oil in time.

[0026] The return end of the hydraulic oil tank 1 is provided with a screening structure, which comprises a hydraulic oil filter 6, a return pipe 7 and a waste liquid collecting box 17. The outlet end of the hydraulic oil filter 6 is provided with a connecting pipe five 21, the other end of the connecting pipe five 21 is connected with the return end of the hydraulic oil tank 1, one end of the return pipe 7 is connected with the outlet end of the hydraulic actuating element, the other end of the return pipe 7 is provided with a viscosity sensor 8. The viscosity sensor 8 can be used to detect the viscosity of the return hydraulic oil in the return pipe 7 in real time, and upload the detection result to the controller of the servo hydraulic control device. The controller can be used to determine whether the viscosity of the hydraulic oil meets the requirements. The viscosity sensor 8 can be a vibration type viscosity sensor in the prior art. The other end of the return pipe 7 is connected with the inlet end of the hydraulic oil filter 6 through a return branch pipe one 18. The return branch pipe one 18 is provided with an electric ball valve one 20 near the end close to the return pipe 7. When the viscosity of the hydraulic oil meets the requirements, the hydraulic oil in the return pipe 7 enters the hydraulic oil filter 6 through the return branch pipe one 18. The hydraulic oil filter 6 uses physical filtration to trap impurities in the hydraulic oil. The filtered hydraulic oil returns to the hydraulic oil tank 1 through the connecting pipe five 21. The other end of the return pipe 7 is connected with the inlet end of the waste liquid collecting box 17 through a return branch pipe two 16. When the controller of the present application determines that the viscosity of the hydraulic oil does not meet the requirements, the return hydraulic oil enters the waste liquid collecting box 17 through the return branch pipe two 16, so as to avoid pollution of the hydraulic oil in the hydraulic oil tank 1 by the hydraulic oil.

[0027] The inlet end of the hydraulic pump 10 is connected with the outlet end of the hydraulic oil tank 1 through a connecting pipe one 11. The outlet end of the hydraulic pump 10 is connected with the inlet end of the hydraulic actuating element through a impurity removal structure. The working of the servo motor 9 can drive the power input shaft of the hydraulic pump 10 to rotate. The working of the hydraulic pump 10 pumps the hydraulic oil in the hydraulic oil tank 1 into the impurity removal structure. The pumped hydraulic oil enters the hydraulic actuating unit after impurity removal, converts hydraulic energy into mechanical energy, and drives the hydraulic actuating unit to work.

[0028] The impurity removal structure includes a barrel body 12, with a filter element 26 fixed inside the barrel body 12. A lifting plate 24 is movably connected to the inner cavity of the barrel body 12, and the lifting plate 24 is located above the filter element 26. The lifting plate 24 is connected to the top of the inner cavity of the barrel body 12 via an electric telescopic rod 23. A connecting pipe 3 25 and a connecting pipe 4 13 are provided on the top of the barrel body 12. One end of the connecting pipe 3 25 is connected to the outlet end of the hydraulic pump 10, and the other end of the connecting pipe 3 25 extends to the bottom of the filter element 26. The operation of the hydraulic pump 10 can pump hydraulic oil to the bottom of the filter element 26, and the filter element 26 can intercept impurities in the hydraulic oil. The impurities are located below the filter element 26. A sealing bottom cover 22 is provided at the bottom of the inner cavity of the barrel body 12, and the sealing bottom cover 22 is connected to the barrel body 12 by a detachable connection. The sealed bottom cover 22 can be connected to the barrel body 12 by a threaded connection. The sealed bottom cover 22 makes it easy for users to clean the impurities intercepted by the filter element 26.

[0029] One end of the connecting pipe 4 13 is located between the lifting plate 24 and the filter element 26, and the lifting plate 24 is movably connected to the connecting pipe 4 13. The other end of the connecting pipe 4 13 is connected to the inlet end of the hydraulic actuator. Through the setting of the connecting pipe 4 13, the filtered hydraulic oil located above the filter element 26 can be discharged through the connecting pipe 4 13.

[0030] One end of the connecting pipe 13 is provided with a pressure relief pipe 5, and one end of the pressure relief pipe 5 is provided with a pressure relief valve 14. The other end of the pressure relief pipe 5 extends to the top of the inner cavity of the hydraulic oil tank 1. Through the setting of the pressure relief pipe 5 and the pressure relief valve 14, the excess hydraulic oil in the connecting pipe 13 can flow back to the hydraulic oil tank 1 through the pressure relief pipe 5, ensuring the pressure of the hydraulic oil flowing through the pipeline.

[0031] As described above, the impurity removal structure can filter the hydraulic oil that is about to enter the hydraulic actuator, preventing impurities in the hydraulic oil from affecting the operation of the hydraulic actuator. When the pressure is released, the position of the lifting plate 24 can be changed by the electric telescopic rod 23, so that some of the excess hydraulic oil can be temporarily stored in the barrel 12, thereby improving the speed of pressure stabilization in the hydraulic oil pipeline.

[0032] All electrical components involved in this application are prior art. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies can be connected by wires. According to the actual situation, a suitable controller can be selected to meet the control requirements. For specific connections and control sequences, please refer to the description below. The electrical connection between each electrical component is completed in the order of operation. The detailed connection methods are well known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0033] In summary, when this energy-saving servo hydraulic control equipment for metallurgy is in use, the servo motor 9 drives the hydraulic pump 10 to operate. The hydraulic pump 10 pumps the hydraulic oil in the hydraulic oil tank 1 to the hydraulic actuator, converting hydraulic energy into mechanical energy to drive the hydraulic actuator. The hydraulic oil then flows back from the hydraulic actuator to the hydraulic oil tank 1. During this process, a purification structure filters the hydraulic oil discharged from the hydraulic pump 10, preventing metal particles generated during pump operation from increasing the operating resistance of this application. Furthermore, when pressure is released, the electric telescopic rod 23 moves the lifting plate 24 upward, increasing the distance between the lifting plate 24 and the filter element 26. This allows a portion of the excess hydraulic oil to temporarily remain in the inner cavity of the tank 12, while the remaining excess hydraulic oil flows back to the hydraulic oil tank 1 through the pressure relief pipe 5, accelerating the stabilization of pressure in the hydraulic oil pipeline. This enables the servo hydraulic control equipment to operate efficiently, thereby reducing energy consumption and facilitating its application in the metallurgical industry.

[0034] Furthermore, the viscosity sensor 8 is used to detect the returned hydraulic oil. Hydraulic oil whose viscosity does not meet the requirements enters the waste liquid collection box 17 through the return branch pipe 2 16, thus preventing this part of the hydraulic oil from contaminating the hydraulic oil in the hydraulic oil tank 1. When the viscosity of the hydraulic oil meets the requirements, the hydraulic oil in the return pipe 7 enters the hydraulic oil filter 6 through the return branch pipe 1 18. The hydraulic oil filter 6 uses physical filtration to intercept impurities in the hydraulic oil. The filtered hydraulic oil flows back to the hydraulic oil tank 1 through the connecting pipe 5 21.

[0035] All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional means such as bolts that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving servo hydraulic control device for metallurgy, comprising a hydraulic oil tank (1), a servo motor (9), and a hydraulic pump (10) connected to the end of the output shaft of the servo motor (9), characterized in that: The hydraulic oil tank (1) is provided with an automatic replenishment structure at the inlet end, and the hydraulic oil tank (1) is provided with a screening structure at the return end. The hydraulic pump (10) is connected to the hydraulic oil tank (1) outlet end through a connecting pipe (11), and the hydraulic pump (10) outlet end is connected to the hydraulic actuator inlet end through a cleanup structure. The screening structure includes a hydraulic oil filter (6), a return pipe (7), and a waste liquid collection box (17). The outlet end of the hydraulic oil filter (6) is connected to the return end of the hydraulic oil tank (1). One end of the return pipe (7) is connected to the outlet end of the hydraulic actuator. The other end of the return pipe (7) is equipped with a viscosity sensor (8). The other end of the return pipe (7) is connected to the inlet end of the hydraulic oil filter (6) through a return branch pipe (18). The other end of the return pipe (7) is connected to the inlet end of the waste liquid collection box (17) through a return branch pipe (2) (16). The impurity removal structure includes a barrel (12), a filter element (26) is fixed in the inner cavity of the barrel (12), a lifting plate (24) is movably connected to the inner cavity of the barrel (12), the lifting plate (24) is located above the filter element (26), and the lifting plate (24) is connected to the top of the inner cavity of the barrel (12) through an electric telescopic rod (23). The top of the barrel (12) is provided with a connecting pipe three (25) and a connecting pipe four (13). One end of the connecting pipe three (25) is connected to the liquid outlet of the hydraulic pump (10), and the other end of the connecting pipe three (25) extends to the bottom of the filter element (26). One end of the connecting pipe four (13) is located between the lifting plate (24) and the filter element (26), and the lifting plate (24) is movably connected to the connecting pipe four (13). The other end of the connecting pipe four (13) is connected to the liquid inlet of the hydraulic actuator.

2. The energy-saving servo hydraulic control equipment for metallurgy according to claim 1, characterized in that: The first return branch pipe (18) is equipped with an electric ball valve (20) at one end near the return pipe (7), and the second return branch pipe (16) is equipped with an electric ball valve (15) at one end near the return pipe (7).

3. The energy-saving servo hydraulic control equipment for metallurgy according to claim 1, characterized in that: One end of the connecting pipe (13) is provided with a pressure relief pipe (5), one end of the pressure relief pipe (5) is provided with a pressure relief valve (14), and the other end of the pressure relief pipe (5) extends to the top of the inner cavity of the hydraulic oil tank (1).

4. The energy-saving servo hydraulic control equipment for metallurgy according to claim 1, characterized in that: A sealing bottom cover (22) is provided at the bottom of the inner cavity of the barrel (12), and the sealing bottom cover (22) is connected to the barrel (12) by a detachable connection.

5. The energy-saving servo hydraulic control equipment for metallurgy according to claim 1, characterized in that: The automatic fluid replenishment structure includes a fluid replenishment tank (2) set on the top of the hydraulic oil tank (1) and a buoyancy block (28) set in the inner cavity of the hydraulic oil tank (1). A connecting pipe (27) is fixedly connected to the bottom of the inner cavity of the fluid replenishment tank (2). The other end of the connecting pipe (27) extends through the fluid inlet of the hydraulic oil tank (1) to the top of the inner cavity of the hydraulic oil tank (1). A positioning rod (29) is fixedly connected to the inner cavity of the hydraulic oil tank (1). The buoyancy block (28) is movably connected to the positioning rod (29). The buoyancy block (28) is located below the connecting pipe (27) and is adapted to the connecting pipe (27).

6. The energy-saving servo hydraulic control equipment for metallurgy according to claim 5, characterized in that: A sealing plug (3) is provided on one side of the top of the replenishment tank (2), and a liquid level sensor (4) and an alarm (19) are provided on the tank wall of the replenishment tank (2).

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