Hydraulic pump station with oil changing function

Abstract

The utility model provides a hydraulic pump station with an oil changing function, which belongs to the technical field of hydraulic pump stations and is characterized in that an input shaft of a hydraulic pump is connected with an output shaft of a motor; an oil inlet of the cooling assembly is connected with an oil outlet of the hydraulic pump, and an oil outlet of the cooling assembly is connected with an oil inlet of the filter; the hydraulic oil tank is connected with an oil inlet of the valve I; a first interface of the tee joint I is connected with an oil outlet of the valve I, a second interface is connected with an oil inlet of the hydraulic pump, and a detachable plug is mounted on a third interface; a first interface of the tee joint II is connected with an oil outlet of the filter, a second interface is connected with an oil inlet of the valve II, and a detachable plug is mounted on a third interface; an oil outlet of the valve II is connected with the hydraulic oil tank; the first end of the oil changing pipe is used for being connected with a third connector of the tee joint I or a third connector of the tee joint II. The hydraulic pump station does not need to be provided with an oil changing pump, operation is easy, the oil changing process can be simplified, oil changing time is shortened, and oil changing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic pump stations, and particularly discloses a hydraulic pump station with an oil changing function. Background Art

[0002] A hydraulic pump station includes the following basic hydraulic components: a hydraulic oil tank, motor, hydraulic pump, cooling assembly, and filter. The hydraulic pump's input shaft is connected to the motor's output shaft, the oil inlet is connected to the hydraulic oil tank, and the oil outlet is connected to the cooling assembly's oil inlet. The cooling assembly's oil outlet is connected to the filter's oil inlet, and the filter's oil outlet is connected to the hydraulic oil tank. Once the hydraulic pump and cooling assembly are connected to the working system, the motor drives the hydraulic pump to deliver qualified hydraulic oil to the working system. After circulating through the working system, the hydraulic oil enters the cooling assembly for cooling. After filtering impurities through the filter, it flows back to the hydraulic oil tank and is pumped again by the hydraulic pump, completing the hydraulic oil cycle. The hydraulic pump station is also equipped with other hydraulic components such as safety valves, pressure gauges, and level sensors to meet the needs of different working systems.

[0003] Since hydraulic oil will produce impurities during the recycling process, although the filter can filter it, there will still be residues in the hydraulic oil. Moreover, after repeated heating and cooling, the quality of the hydraulic oil will also change, so regular oil changes are required. The oil change work is generally carried out using a matching oil change pump. The oil change pump is connected to the hydraulic oil tank through an oil pipe. The oil change pump is used to pump the old oil in the hydraulic pump station into the oil barrel, and then the new oil is pumped into the hydraulic pump station. The oil change pump and the oil pipe are then removed. The whole process is relatively cumbersome and time-consuming. In addition, the flow rate of the matching oil change pump is generally low. For medium and large hydraulic pump stations (such as quantitative loading hydraulic pump stations), the oil change cycle is generally 1-2 years. The frequency of oil change is not very high, so how to simplify the oil change process is rarely paid attention to. Utility Model Content

[0004] The utility model provides a hydraulic pump station with an oil changing function, which solves the technical problem that the operation of changing oil using an oil changing pump is complicated and time-consuming.

[0005] The above-mentioned hydraulic pump station with oil change function includes a hydraulic oil tank, a motor, a hydraulic pump, a cooling assembly, a filter, valve I, a tee I, a tee II, a valve II and an oil change pipe; the input shaft of the hydraulic pump is connected to the output shaft of the motor; the oil inlet of the cooling assembly is connected to the oil outlet of the hydraulic pump, and the oil outlet is connected to the oil inlet of the filter; the hydraulic oil tank is connected to the oil inlet of valve I; the first interface of tee I is connected to the oil outlet of valve I, the second interface is connected to the oil inlet of the hydraulic pump, and the third interface is installed with a detachable plug; the first interface of tee II is connected to the oil outlet of the filter, the second interface is connected to the oil inlet of valve II, and the third interface is installed with a detachable plug; the oil outlet of valve II is connected to the hydraulic oil tank; the first end of the oil change pipe is used to be connected to the third interface of tee I or the third interface of tee II.

[0006] The above-mentioned hydraulic pump station with oil changing function also includes a safety valve; the oil inlet of the safety valve is connected between the hydraulic pump and the cooling component, and the oil outlet is connected to the hydraulic oil tank.

[0007] The above-mentioned hydraulic pump station with oil change function also includes a one-way valve; the oil inlet of the one-way valve is connected between the cooling component and the filter, and the oil outlet is connected between the filter and the tee II.

[0008] In the above-mentioned hydraulic pump station with oil changing function, the input shaft of the hydraulic pump and the output shaft of the motor are connected via a coupling.

[0009] The working process of the above hydraulic pump station with oil change function is as follows:

[0010] During normal operation, both valves are in the open state, and the third interface of the tee is in the blocked state;

[0011] When changing the oil, when pumping out the waste oil from the hydraulic oil tank, close valve II, remove the plug of the third interface of tee II, connect the first end of the oil change pipe to the third interface of tee II, lead the second end of the oil change pipe to the waste oil barrel, turn on the motor, and the hydraulic oil in the hydraulic oil tank can be pumped into the waste oil barrel;

[0012] When adding new oil to the hydraulic oil tank, open valve II, remove the oil change pipe, install the plug of the third interface of tee II, close valve I, remove the plug of the third interface of tee I, connect the first end of the oil change pipe to the third interface of tee I, lead the second end of the oil change pipe to the new oil barrel, turn on the motor, and the hydraulic oil in the new oil barrel can be pumped into the hydraulic oil tank.

[0013] As can be seen from the above, compared with the prior art, the present invention has the following beneficial effects:

[0014] No need to equip an oil change pump, simple operation, can simplify the oil change process, shorten the oil change time and improve the oil change efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a structural diagram of an existing hydraulic pump station;

[0017] Figure 2 A schematic diagram of the structure of the hydraulic pump station provided by the utility model;

[0018] Figure 3 This is a schematic diagram of the hydraulic oil tank pumping out waste oil;

[0019] Figure 4 This is a schematic diagram of adding new oil to the hydraulic oil tank.

[0020] In the figure: 1- hydraulic oil tank; 2- motor; 3- hydraulic pump; 4- cooling assembly; 5- filter; 6- valve I; 7- tee I; 8- tee II; 9- valve II; 10- oil change pipe; 11- safety valve; 12- one-way valve; 13- coupling; 101- waste oil drum; 102- new oil drum. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] This embodiment provides a hydraulic pump station with an oil change function, including a hydraulic oil tank 1, a motor 2, a hydraulic pump 3, a cooling assembly 4, a filter 5, a valve I6, a tee I7, a tee II8, a valve II9 and an oil change pipe 10; the input shaft of the hydraulic pump 3 is connected to the output shaft of the motor 2; the oil inlet of the cooling assembly 4 is connected to the oil outlet of the hydraulic pump 3, and the oil outlet is connected to the oil inlet of the filter 5; the hydraulic oil tank 1 is connected to the oil inlet of the valve I6; the first interface of the tee I7 is connected to the oil outlet of the valve I6, the second interface is connected to the oil inlet of the hydraulic pump 3, and the third interface is installed with a detachable plug; the first interface of the tee II8 is connected to the oil outlet of the filter 5, the second interface is connected to the oil inlet of the valve II9, and the third interface is installed with a detachable plug; the oil outlet of the valve II9 is ​​connected to the hydraulic oil tank 1; the first end of the oil change pipe 10 is used to be connected to the third interface of the tee I7 or the third interface of the tee II8.

[0023] The hydraulic pump station with oil changing function further includes a safety valve 11 ; the oil inlet of the safety valve 11 is connected between the hydraulic pump 3 and the cooling assembly 4 , and the oil outlet is connected to the hydraulic oil tank 1 .

[0024] The above-mentioned hydraulic pump station with oil changing function further includes a one-way valve 12; the oil inlet of the one-way valve 12 is connected between the cooling assembly 4 and the filter 5, and the oil outlet is connected between the filter 5 and the tee II 7.

[0025] In the above hydraulic pump station with oil changing function, the input shaft of the hydraulic pump 3 and the output shaft of the motor 2 are connected via a coupling 13 .

[0026] The working process of the above hydraulic pump station with oil change function is as follows:

[0027] During normal operation, both valves are in the open state, and the third interface of the three-way is in the blocked state. When the oil pressure between the hydraulic pump 3 and the cooling assembly 4 is greater than the rated pressure of the safety valve 11, the safety valve 11 opens to release the pressure. When the filter 5 is operating normally, the resistance of the hydraulic oil passing through the filter 5 is less than the opening resistance of the one-way valve 12, and the hydraulic oil flows through the filter 5, achieving the effect of the filter 5. When impurities in the filter 5 accumulate to a certain extent, the resistance becomes larger, and after exceeding the opening resistance of the one-way valve 12, the one-way valve 12 opens, and the hydraulic oil passes through the one-way valve 12 to prevent the suction end of the hydraulic pump 3 from being damaged due to lack of oil.

[0028] When changing the oil, when pumping out waste oil from the hydraulic oil tank 1, close the valve II9, remove the plug of the third interface of the tee II8, connect the first end of the oil change pipe 10 to the third interface of the tee II8, lead the second end of the oil change pipe 10 into the waste oil barrel 101, turn on the motor 2, and the hydraulic oil in the hydraulic oil tank 1 can be pumped into the waste oil barrel 101;

[0029] When adding new oil to the hydraulic oil tank 1, open valve II9, remove the oil change pipe 10, install the plug of the third interface of the tee II8, close valve I6, remove the plug of the third interface of the tee I7, connect the first end of the oil change pipe 10 to the third interface of the tee I7, lead the second end of the oil change pipe 10 into the new oil barrel 102, turn on the motor 2, and the hydraulic oil in the new oil barrel 102 can be pumped into the hydraulic oil tank 1.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic pump station with oil change function, including a hydraulic oil tank, a motor, a hydraulic pump, a cooling assembly and a filter; The input shaft of the hydraulic pump is connected to the output shaft of the motor; The oil inlet of the cooling assembly is connected to the oil outlet of the hydraulic pump, and the oil outlet is connected to the oil inlet of the filter; it is characterized in that: It also includes valve I, tee I, tee II, valve II and oil change pipe; The hydraulic oil tank is connected to the oil inlet of valve I; The first interface of the three-way valve I is connected to the oil outlet of the valve I, the second interface is connected to the oil inlet of the hydraulic pump, and the third interface is equipped with a detachable plug; The first interface of the tee II is connected to the oil outlet of the filter, the second interface is connected to the oil inlet of the valve II, and the third interface is installed with a detachable plug; The oil outlet of the valve II is connected to the hydraulic oil tank; The first end of the oil exchange pipe is used to be connected to the third interface of the tee I or the third interface of the tee II.

2. The hydraulic pump station with oil change function according to claim 1, characterized in that: It also includes a safety valve; the oil inlet of the safety valve is connected between the hydraulic pump and the cooling component, and the oil outlet is connected to the hydraulic oil tank.

3. The hydraulic pump station with oil change function according to claim 1, characterized in that: It also includes a one-way valve; the oil inlet of the one-way valve is connected between the cooling component and the filter, and the oil outlet is connected between the filter and the tee II.

4. The hydraulic pump station with oil change function according to claim 1, characterized in that: The input shaft of the hydraulic pump and the output shaft of the motor are connected through a coupling.

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