Energy-saving hydraulic station using load-sensitive pump

Abstract

The utility model discloses an energy-saving hydraulic station using a load-sensitive pump, which belongs to the technical field of hydraulic stations and is characterized in that a motor, an oil tank and an upper tank door capable of being opened and closed are arranged on the inner side of a totally-closed oil source cover, a load-sensitive variable pump is arranged in the oil tank, a liquid level thermometer is arranged on the surface of the oil tank, and a handle is arranged on the surface of the upper tank door; according to the energy-saving hydraulic station with the load-sensitive pump, the adopted load-sensitive pump can automatically feed back flow and pressure signals needed by a load to a variable mechanism of the load-sensitive variable pump, and therefore the energy-saving hydraulic station with the load-sensitive pump can automatically feed back the flow and pressure signals needed by the load to the load-sensitive variable pump. The flow and the pressure output by the variable pump are matched with the flow and the pressure required by the load, so that the power loss of the hydraulic station is only trace throttling loss, the problem that the oil temperature rises too fast due to the high-pressure overflow loss of a constant displacement pump system is solved, the effect of saving energy and electricity is achieved, and meanwhile the oil temperature of the system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic stations, and more specifically to an energy-saving hydraulic station using a load-sensitive pump. Background Art

[0002] The hydraulic station is a hydraulic source device consisting of a hydraulic pump, a driving motor, an oil tank, a directional valve, a throttle valve, a relief valve, etc., or a hydraulic device including a control valve. It supplies oil in the direction, pressure and flow rate required by the driving device. It is suitable for various machines in which the driving device is separated from the hydraulic station. By connecting the hydraulic station to the driving device (cylinder or motor) with an oil pipe, the hydraulic system can achieve various specified actions.

[0003] At present, the hydraulic pumps installed in commonly used hydraulic stations will not automatically adjust the flow and pressure required by the load according to actual needs during operation, which makes the flow and pressure of the hydraulic pump mismatch with the flow and pressure required by the load. This not only increases the power loss of the hydraulic station, but also causes high-pressure overflow loss of the quantitative pump system. At the same time, it will cause the oil temperature to rise too quickly, increasing energy consumption. For this reason, we have designed an energy-saving hydraulic station with a load-sensitive pump to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an energy-saving hydraulic station with a load-sensitive pump. The energy-saving hydraulic station with a load-sensitive pump adopts a load-sensitive pump that can automatically feed back the flow and pressure signals required by the load to the variable mechanism of the load-sensitive variable pump, so that the flow and pressure output by the variable pump match the flow and pressure required by the load, so that the power loss of the hydraulic station is only a slight throttling loss, overcoming the high-pressure overflow loss of the quantitative pump system, which in turn causes the oil temperature to rise too quickly, thereby achieving the effect of energy saving and power saving, while reducing the system oil temperature.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] An energy-saving hydraulic station using a load-sensitive pump comprises a fully enclosed oil source cover, wherein a motor, an oil tank and a switchable upper box door are arranged on the inner side of the fully enclosed oil source cover, a load-sensitive variable pump is arranged inside the oil tank, a liquid level thermometer is arranged on the surface of the oil tank, a handle is arranged on the surface of the upper box door, a supporting foot is arranged at the bottom of the fully enclosed oil source cover, a pressure regulating valve block, a control valve block and a cooler are fixedly installed on the end surface of the oil tank, a hydraulic valve is fixedly installed on the surface of the pressure regulating valve block, an electric control cabinet is fixedly connected to the side of the fully enclosed oil source cover, and a switchable side box door is arranged on the side of the electric control cabinet. The energy-saving hydraulic station using a load-sensitive pump adopts a load-sensitive pump that can automatically feed back the flow and pressure signals required by the load to the variable mechanism of the load-sensitive variable pump, so that the flow and pressure output by the variable pump match the flow and pressure required by the load, so that the power loss of the hydraulic station is only a slight throttling loss, and the problem of high-pressure overflow loss of the quantitative pump system, which leads to excessive increase in oil temperature, is overcome, and the effect of energy saving and power saving is achieved, while reducing the system oil temperature.

[0007] Furthermore, the electric control cabinet is frame-shaped, and a limit groove is provided on the inner wall. A sealing gasket is provided on the inner wall of the limit groove. The side contact of the sealing gasket is connected with a sealing strip. The surface of the sealing strip is bonded with a limit beam. The limit groove and the limit beam are used to close the side box door, and at the same time, the side box door squeezes the sealing gasket and the sealing strip to seal the closed gap, which has the function of noise reduction.

[0008] Furthermore, the surface of the limiting beam and the surface of the limiting groove are in the same plane, the surfaces of the sealing strip and the sealing gasket are in contact and extrusion with the inner surface of the side door, and the sealing gasket is frame-shaped and can seal the sides of the door.

[0009] Furthermore, the fully enclosed oil source cover and the top of the electric control cabinet are detachably connected with a lifting ring, the surface of the lifting ring is provided with a screw, and the top of the fully enclosed oil source cover and the electric control cabinet are provided with a threaded hole. The lifting ring is used to facilitate the lifting of the hydraulic station, and the lifting ring can be removed and reused.

[0010] Furthermore, a handle bar and a display are provided on the surface of the side box door. The handle bar is U-shaped, and the display facilitates the user to observe the internal working conditions of the hydraulic station.

[0011] Furthermore, a door lock is provided on the surface of the handle, and the handle is in a U-shape.

[0012] Furthermore, the sealing strip and the sealing pad are both made of extrusion-resistant sound-absorbing cotton material and have a sound-absorbing function.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) The load-sensitive pump used in this solution can automatically feed back the flow and pressure signals required by the load to the variable mechanism of the load-sensitive variable pump, so that the flow and pressure output by the variable pump match the flow and pressure required by the load, so that the power loss of the hydraulic station is only a slight throttling loss, overcoming the problem of high-pressure overflow loss in the quantitative pump system, which in turn causes the oil temperature to rise too quickly, achieving the effect of energy saving and power saving, while reducing the system oil temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a top view of the overall structure of the utility model;

[0017] Figure 3 This is a side view of the electric control cabinet structure of the utility model;

[0018] Figure 4 for Figure 3 The three-dimensional diagram of the electric control cabinet frame structure;

[0019] Figure 5 This is a working principle diagram of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1 fully enclosed oil source cover, 11 oil tank, 12 liquid level thermometer, 13 upper box door, 14 handle, 15 load-sensitive variable pump, 16 motor, 2 cooler, 3 pressure regulating valve block, 31 control valve block, 4 hydraulic valve, 7 electric control cabinet, 71 side box door, 72 handle bar, 73 limit groove, 74 limit beam, 75 sealing pad, 76 sealing strip, 77 display, 8 lifting ring, 9 supporting foot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figures 1-5An energy-saving hydraulic station with a load-sensitive pump comprises a fully enclosed oil source cover 1, a motor 16, an oil tank 11 and a switchable upper box door 13 are arranged on the inner side of the fully enclosed oil source cover 1, a load-sensitive variable pump 15 is arranged inside the oil tank 11, a liquid level thermometer 12 is arranged on the surface of the oil tank 11, a handle 14 is arranged on the surface of the upper box door 13, a supporting foot 9 is arranged at the bottom of the fully enclosed oil source cover 1, a pressure regulating valve block 3, a control valve block 31 and a cooler 2 are fixedly installed on the end surface of the oil tank 11, the pressure regulating valve block 3 is provided with a flow and pressure detection sensor, and the flow and pressure signals can be fed back to the load-sensitive variable pump 15, the load-sensitive The variable pump 15 is provided with a variable mechanism component, which can automatically adjust the flow rate and pressure. The hydraulic valve 4 and the cooler 2 belong to the prior art. The hydraulic valve 4 is fixedly installed on the surface of the pressure regulating valve block 3. The side of the fully enclosed oil source cover 1 is fixedly connected to the electric control cabinet 7. The top of the fully enclosed oil source cover 1 and the electric control cabinet 7 are detachably connected with a lifting ring 8. The surface of the lifting ring 8 is provided with a screw. The top of the fully enclosed oil source cover 1 and the electric control cabinet 7 are provided with threaded holes. The lifting ring 8 is convenient for lifting the hydraulic station, and the lifting ring 8 can be disassembled and reused. The side of the electric control cabinet 7 is provided with a switchable side box door 71, which facilitates opening the electric control cabinet 7.

[0025] Preferably, the electric control cabinet 7 is frame-shaped, and a limit groove 73 is provided on the inner wall. A sealing gasket 75 is provided on the inner wall of the limit groove 73. The side contact of the sealing gasket 75 is connected with a sealing strip 76. The surface of the sealing strip 76 is bonded with a limit beam 74. The limit groove 73 and the limit beam 74 are used to close the side box door 71, and at the same time make the side box door 71 squeeze the sealing gasket 75 and the sealing strip 76 to seal the closed gap, which has the function of noise reduction. The surface of the side box door 71 is provided with a handle rod 72 and a display 77. The handle rod 72 is U-shaped, and the display 77 is convenient for users to observe the internal working conditions of the hydraulic station.

[0026] Preferably, the surface of the limiting beam 74 and the surface of the limiting groove 73 are in the same plane, the surfaces of the sealing strip 76 and the sealing gasket 75 are in contact and extrusion with the inner surface of the side box door 71, the sealing gasket 75 is frame-shaped, and can seal the four sides of the box door, the sealing strip 76 and the sealing gasket 75 are made of extrusion-resistant sound-absorbing cotton material, and have the function of sound absorption, and a door lock is provided on the surface of the handle 14, and the shape of the handle 14 is U-shaped.

[0027] When the energy-saving hydraulic station using a load-sensitive pump is working, the load-sensitive pump used can automatically feed back the flow and pressure signals required by the load to the variable mechanism of the load-sensitive variable pump 15, so that the flow and pressure output by the variable pump match the flow and pressure required by the load, so that the power loss of the hydraulic station is only a slight throttling loss, overcoming the problem of high-pressure overflow loss of the quantitative pump system, which in turn causes the oil temperature to rise too quickly, achieving the effect of energy saving and power saving, while reducing the system oil temperature.

[0028] The above are only the preferred specific embodiments of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved conceptions, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. An energy-saving hydraulic station using a load-sensitive pump, comprising a fully enclosed oil source cover (1), characterized in that: Inside the fully enclosed oil source cover (1), there are a motor (16), an oil tank (11), and a switchable upper cabinet door (13). Inside the oil tank (11), there is a load-sensitive variable pump (15). On the surface of the oil tank (11), there is a liquid level thermometer (12). On the surface of the upper cabinet door (13), there is a handle (14). At the bottom of the fully enclosed oil source cover (1), there are support feet (9). At the end face of the oil tank (11), a pressure regulating valve block (3), a control valve block (31), and a cooler (2) are fixedly installed. On the surface of the pressure regulating valve block (3), a hydraulic valve (4) is fixedly installed. On the side of the fully enclosed oil source cover (1), an electric control cabinet (7) is fixedly connected. On the side of the electric control cabinet (7), there is a switchable side cabinet door (71).

2. The energy-saving hydraulic station using a load-sensing pump according to claim 1, characterized in that: The electric control cabinet (7) is in a frame shape, and its inner wall is provided with a limiting groove (73). Inside the limiting groove (73), there is a sealing gasket (75). The side of the sealing gasket (75) is in contact connection with a sealing strip (76). On the surface of the sealing strip (76), a limiting beam (74) is adhesively connected.

3. The energy-saving hydraulic station with a load-sensitive pump according to claim 2, characterized in that: The surface of the limiting beam (74) is in the same plane as the surface of the limiting groove (73). The surfaces of the sealing strip (76) and the sealing gasket (75) are both in contact extrusion with the inner surface of the side cabinet door (71). The sealing gasket (75) is in a frame shape.

4. An energy-saving hydraulic station using a load-sensing pump according to claim 1, characterized in that: On the top of the fully enclosed oil source cover (1) and the electric control cabinet (7), a lifting ring (8) is detachably connected. On the surface of the lifting ring (8), there is a screw rod. On the top of the fully enclosed oil source cover (1) and the electric control cabinet (7), there are threaded holes.

5. The energy-saving hydraulic station using a load-sensitive pump according to claim 1, wherein: On the surface of the side cabinet door (71), there are a handle rod (72) and a display (77). The handle rod (72) is in a U shape.

6. The energy-saving hydraulic station with a load-sensing pump according to claim 1, characterized in that: On the surface of the handle (14), there is a door lock. The handle (14) is in a U shape.

7. An energy-saving hydraulic station using a load-sensing pump according to claim 2, characterized in that: Both the sealing strip (76) and the sealing gasket (75) are made of extrusion-resistant sound-absorbing cotton material.

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