Pumping device with cooling structure

Abstract

The utility model relates to the technical field of hydraulic pumping, specifically relates to a kind of pumping device with cooling structure, including hydraulic pump and oil tank, further include heat exchanger, heat exchanger is provided with heat exchange cavity, and cooling liquid is provided in the heat exchange cavity, and heat exchange coil pipe is soaked in cooling liquid, the inlet interface and discharge interface of heat exchange coil pipe are placed in the outside of heat exchanger, the oil inlet of hydraulic pump and the oil outlet end of oil tank are connected, the oil outlet of hydraulic pump is connected with oil supply pipeline, the inlet interface of heat exchange coil pipe is connected with oil return pipeline, and the discharge interface of heat exchange coil pipe is connected with the oil inlet of oil tank by conveying pipe and oil outlet end. In the prior art, the pumping device of liquid pressure test mostly does not have cooling structure, and the problem that oil temperature is too high to cause hydraulic oil oxidation and deterioration, and simultaneously damage valve body and other hydraulic components.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pumping technology, specifically to a pumping device with a cooling structure. Background Technology

[0002] Hydraulic drive equipment, such as hydraulic cylinders, hydraulic steering mechanisms, and other equipment, requires sealing tests and break-in tests before being put into use to ensure that the device or component can be used normally.

[0003] Currently, sealing tests are mostly conducted using test benches to test the sealing of hydraulic equipment. The test bench is connected to the oil inlet and outlet of the hydraulic equipment, and hydraulic oil is introduced into the equipment to simulate its operation, thereby determining whether leaks exist. The test bench typically uses a hydraulic pump, supply lines, and return lines to pump hydraulic oil into the hydraulic equipment for sealing or break-in tests.

[0004] In the existing technology, most oil pump devices used with test benches only have an oil tank and an oil pump. The oil pump pumps the hydraulic oil in the oil tank into the test bench for sealing tests or break-in tests. However, due to the continuous production of the equipment, the test bench needs to continuously perform sealing tests or break-in tests. This will cause the temperature of the hydraulic oil to gradually rise during use. If the hydraulic oil cannot be effectively cooled in time, the excessively high oil temperature will cause the hydraulic oil to oxidize and deteriorate, and at the same time damage the valve body and other hydraulic components. Utility Model Content

[0005] The purpose of this utility model is to provide a pumping device with a cooling structure, which solves the problem that most existing pumping devices for hydraulic testing do not have a cooling structure, resulting in excessively high oil temperature causing hydraulic oil oxidation and deterioration, and damaging the valve body and other hydraulic components.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A pumping device with a cooling structure includes a hydraulic pump and an oil tank, as well as a heat exchanger. The heat exchanger has a heat exchange chamber, which contains coolant and a heat exchange coil immersed in the coolant. The inlet and outlet of the heat exchange coil are located outside the heat exchanger. The inlet of the hydraulic pump is connected to the outlet of the oil tank, and the outlet of the hydraulic pump is connected to an oil supply line. The inlet of the heat exchange coil is connected to a return line, and the outlet of the heat exchange coil is connected to the inlet of the oil tank via a delivery pipe.

[0008] A further technical solution is that a water pump is installed on the upper side of the heat exchanger, and a water-cooled radiator is installed on the side of the heat exchanger. The inlet of the water-cooled radiator is connected to the heat exchange chamber through a first water pipe, the outlet of the water-cooled radiator is connected to the inlet of the water pump through a second water pipe, the outlet of the water pump is connected to the heat exchange chamber through a third water pipe, and a cooling fan for cooling the water-cooled radiator is installed on the side of the water-cooled radiator.

[0009] A further technical solution includes a mounting base plate, with the heat exchanger, oil tank, and hydraulic pump sequentially mounted on the upper side of the mounting base plate, and lifting holes penetrating both sides provided on the side of the mounting base plate.

[0010] A further technical solution is to install a mounting bracket vertically on the upper side of the mounting base plate, and install a control box on the upper side of the mounting bracket, with the hydraulic pump electrically connected to the control box.

[0011] A further technical solution is that a first filter is installed on the upper side of the oil tank. The inlet of the first filter is connected to the outlet of the hydraulic pump through the first oil outlet pipe, and the outlet of the first filter is connected to the oil supply pipeline.

[0012] A further technical solution is to install a second filter inside the oil tank, with the end of the delivery pipe away from the heat exchanger connected to the inlet of the second filter, and the outlet of the second filter placed inside the oil tank.

[0013] A further technical solution is that the oil inlet of the hydraulic pump is connected to the oil outlet of the oil tank through a second oil outlet pipe, and a high-pressure ball valve for the controller to turn on and off is installed on the second oil outlet pipe.

[0014] A further technical solution is to install a level gauge inside the oil tank, with the level gauge's display module installed on the side of the oil tank; and to install a pressure gauge on the top of the oil tank for detecting the pressure inside the oil tank.

[0015] Compared with the prior art, the present invention has at least one of the following beneficial effects: 1. By setting a heat exchanger, and setting a heat exchange coil and coolant in the heat exchanger, when the hydraulic pump pumps the hydraulic oil out of the tank and returns through the return oil pipeline, it will pass through the heat exchange coil and the delivery pipe in sequence back to the oil tank. When passing through the heat exchange coil, the hydraulic oil in the heat exchange coil exchanges heat with the coolant in the heat exchange chamber through the outer wall of the heat exchange coil. The coolant absorbs the heat of the hydraulic oil in the heat exchange coil to reduce the temperature of the hydraulic oil; 2. By setting the heat exchanger between the return oil pipeline and the oil tank, the hydraulic oil can be cooled before returning to the oil tank, avoiding the oil tank from being in a high-temperature state. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a pumping device with a cooling structure according to the present invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of a pumping device with a cooling structure according to the present invention. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the internal structure of a heat exchanger in a pumping device with a cooling structure according to this utility model.

[0019] Figure 4 This is a schematic diagram of a water-cooled heat dissipation radiator for a pumping device with a cooling structure according to this utility model.

[0020] Icons: 1-Hydraulic pump, 2-Oil tank, 3-Heat exchanger, 4-Oil supply line, 5-Oil return line, 6-Transfer pipe, 7-Mounting base plate, 8-Lifting hole, 9-Mounting bracket, 10-Control box, 11-First filter, 12-First oil outlet pipe, 13-Second filter, 14-Second oil outlet pipe, 15-High-pressure ball valve, 16-Level gauge, 17-Pressure gauge, 18-Water-cooled box, 19-Water pump, 20-Water-cooled radiator, 21-Heat exchange coil, 22-First water pipe, 23-Second water pipe, 24-Third water pipe, 25-Cooling fan, 26-Heat exchange chamber, 27-First connector, 28-Second connector. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Figures 1 to 4 The following is an embodiment of the present invention.

[0023] Example 1:

[0024] A pumping device with a cooling structure includes a hydraulic pump 1 and an oil tank 2, as well as a heat exchanger 3. The heat exchanger 3 has a heat exchange chamber 26 containing coolant and a heat exchange coil 21 immersed in the coolant. The inlet and outlet of the heat exchange coil 21 are located outside the heat exchanger 3. The inlet of the hydraulic pump 1 is connected to the outlet of the oil tank 2, and the outlet of the hydraulic pump 1 is connected to a supply line 4. The inlet of the heat exchange coil 21 is connected to a return line 5, and the outlet of the heat exchange coil 21 is connected to the inlet of the oil tank 2 via a delivery pipe 6. The supply line 4 and the return line 5 can be connected to various hydraulic equipment. The supply line 4 supplies hydraulic oil to the hydraulic equipment, and the return line 5 recovers the hydraulic oil.

[0025] A water pump 19 is installed on the upper side of the heat exchanger 3, and a water-cooled radiator 20 is installed on the side of the heat exchanger 3. The inlet of the water-cooled radiator 20 is connected to the heat exchange chamber 26 through a first water pipe 22, and the outlet of the water-cooled radiator 20 is connected to the inlet of the water pump 19 through a second water pipe 23. The outlet of the water pump 19 is connected to the heat exchange chamber 26 through a third water pipe 24. A cooling fan 25 for cooling the water-cooled radiator 20 is installed on the side of the water-cooled radiator 20. A first mounting hole and a second mounting hole connected to the heat exchange chamber 26 are provided on the surface of the heat exchanger 3. A first connector 27 and a second connector 28 are installed in the first mounting hole and the second mounting hole, respectively. The inlet of the heat exchange coil 21 is connected to one end of the first connector 27, the return oil pipe 5 is connected to the other end of the first connector 27, the outlet of the heat exchange coil 21 is connected to one end of the second connector 28, and the end of the delivery pipe 6 away from the oil tank 2 is connected to the other end of the second connector 28. The water-cooled radiator 20 has flat heat dissipation fins inside, and heat exchange channels are provided within the fins to allow coolant flow. The two ends of the heat exchange channels are connected to the inlet and outlet of the water-cooled radiator 20, respectively. When the heat exchanger 3 is working, the coolant in the heat exchange chamber 26, driven by the water pump 19, enters the heat exchange channels inside the water-cooled radiator 20 through the first water pipe 22. As it flows through the heat exchange channels, the cooling fan 25 drives air at high speed across the surface of the heat dissipation fins, carrying away the heat from the fins and thus cooling the coolant flowing through the heat exchange channels. After flowing through the heat dissipation channels, the coolant enters the water pump 19 through the second water pipe 23, and then, driven by the water pump, returns to the heat exchange chamber 26 through the third water pipe 24. With the cooperation of the water pump 19 and the water-cooled radiator 20, the coolant in the heat exchange chamber 26 can be kept at a low temperature, thereby better cooling the hydraulic oil passing through the heat exchange coil 21.

[0026] The system also includes a mounting base plate 7, on which the heat exchanger 3, oil tank 2, and hydraulic pump 1 are sequentially mounted. The mounting base plate 7 has lifting holes 8 running through both sides. By using the mounting base plate 7, the overall integrity of the pumping device is improved. When installing or moving the pumping device, a forklift can be used to move the entire device through the lifting holes 8 without disassembling the heat exchanger 3, oil tank 2, and hydraulic pump 1. After being moved to its position, only the oil supply line 4 and return line 5 need to be connected for operation.

[0027] A mounting bracket 9 is vertically installed on the upper side of the mounting base plate 7, and a control box 10 is installed on the upper side of the mounting bracket 9. The hydraulic pump 1 is electrically connected to the control box 10. By setting the mounting bracket 9, the control box 10 can be installed at a suitable height, so that the operator can control the start and stop of the hydraulic pump 1 through the control box 10 while standing.

[0028] A first filter 11 is installed on the upper side of the oil tank 2. The inlet of the first filter 11 is connected to the outlet of the hydraulic pump 1 through the first oil outlet pipe 12, and the outlet of the first filter 11 is connected to the oil supply pipe 4. By setting the first filter 11, the hydraulic oil entering the oil tank 2 from the return oil pipe 5 can be filtered, improving the quality of the hydraulic oil in the oil tank 2, thereby preventing impurities from entering the oil tank 2 and causing impurities in the hydraulic oil during subsequent use, which would affect the break-in of the hydraulic equipment.

[0029] A second filter 13 is installed inside the oil tank 2. The end of the delivery pipe 6 away from the heat exchanger 3 is connected to the inlet of the second filter 13, and the outlet of the second filter 13 is located inside the oil tank 2. By setting the second filter 13, the hydraulic oil entering the oil supply line 4 from the oil tank 2 can be filtered, further improving the quality of the hydraulic oil during use and preventing impurities from affecting the break-in of the hydraulic equipment.

[0030] The inlet of hydraulic pump 1 is connected to the outlet of oil tank 2 via a second outlet pipe 14. A high-pressure ball valve 15 for controller on / off is installed on the second outlet pipe 14. By installing the high-pressure ball valve 15, the passage between oil tank 2 and hydraulic pump 1 can be closed when hydraulic pump 1 is not in use, thereby preventing hydraulic oil from entering hydraulic pump 1 when not in use.

[0031] A level gauge 16 is installed inside the oil tank 2, and the display module of the level gauge 16 is installed on the side of the oil tank 2. A pressure gauge 17 for detecting the pressure inside the oil tank 2 is installed on the upper side of the oil tank 2. By setting up the level gauge 16, the level of hydraulic oil in the oil tank 2 can be monitored. Since the pumping device is mainly used for hydraulic testing, the hydraulic oil pipes need to be frequently disassembled to replace different hydraulic equipment for testing. During the disassembly process, some hydraulic oil will inevitably leak out, causing the hydraulic oil in the oil tank 2 to gradually decrease. Therefore, it is necessary to pay attention to the level of hydraulic oil in the oil tank 2 at all times to avoid the hydraulic oil being too low and affecting the use.

[0032] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A pumping device with a cooling structure, comprising a hydraulic pump (1) and an oil tank (2), characterized in that, It also includes a heat exchanger (3), which has a heat exchange chamber (26) inside. The heat exchange chamber (26) contains coolant and a heat exchange coil (21) immersed in the coolant. The inlet and outlet of the heat exchange coil (21) are located outside the heat exchanger (3). The inlet of the hydraulic pump (1) is connected to the outlet of the oil tank (2). The outlet of the hydraulic pump (1) is connected to the oil supply line (4). The inlet of the heat exchange coil (21) is connected to the return line (5). The outlet of the heat exchange coil (21) is connected to the inlet of the oil tank (2) through the delivery pipe (6).

2. The pumping device with a cooling structure according to claim 1, characterized in that: A water pump (19) is installed on the upper side of the heat exchanger (3), and a water-cooled heat sink (20) is installed on the side of the heat exchanger (3). The inlet of the water-cooled heat sink (20) is connected to the heat exchange chamber (26) through a first water pipe (22). The outlet of the water-cooled heat sink (20) is connected to the inlet of the water pump (19) through a second water pipe (23). The outlet of the water pump (19) is connected to the heat exchange chamber (26) through a third water pipe (24). A cooling fan (25) for cooling the water-cooled heat sink (20) is installed on the side of the water-cooled heat sink (20).

3. The pumping device with a cooling structure according to claim 1, characterized in that: It also includes a mounting base plate (7), on which the heat exchanger (3), oil tank (2) and hydraulic pump (1) are sequentially mounted on the upper side of the mounting base plate (7), and the side of the mounting base plate (7) is provided with lifting holes (8) that pass through both sides.

4. A pumping device with a cooling structure according to claim 3, characterized in that: A mounting bracket (9) is vertically arranged on the upper side of the mounting base plate (7), and a control box (10) is installed on the upper side of the mounting bracket (9). The hydraulic pump (1) is electrically connected to the control box (10).

5. A pumping device with a cooling structure according to claim 1, characterized in that: A first filter (11) is installed on the upper side of the oil tank (2). The inlet of the first filter (11) is connected to the outlet of the hydraulic pump (1) through the first oil outlet pipe (12). The outlet of the first filter (11) is connected to the oil supply pipeline (4).

6. A pumping device with a cooling structure according to claim 1, characterized in that: The oil tank (2) is equipped with a second filter (13). The end of the delivery pipe (6) away from the heat exchanger (3) is connected to the inlet of the second filter (13). The outlet of the second filter (13) is located inside the oil tank (2).

7. A pumping device with a cooling structure according to claim 1, characterized in that: The oil inlet of the hydraulic pump (1) is connected to the oil outlet of the oil tank (2) through the second oil outlet pipe (14), and a high-pressure ball valve (15) for the controller to switch on and off is provided on the second oil outlet pipe (14).

8. A pumping device with a cooling structure according to claim 1, characterized in that: A level gauge (16) is installed inside the oil tank (2), and the display module of the level gauge (16) is installed on the side of the oil tank (2); a pressure gauge (17) for detecting the pressure inside the oil tank (2) is installed on the upper side of the oil tank (2).

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