A centralized oil return device for air blowing in a cooler

Abstract

This utility model discloses a centralized oil return device for a cooling machine, comprising an oil tank and an oil return device body. The oil return device body is mounted on the side wall of the oil tank and is connected to the oil outlet of the mold via an oil return pipeline. An oil / air outlet system is provided outside the oil tank, and a transmission pipe is provided at the top of the oil / air outlet system. Multiple sets of connecting pipes are provided at the top of the oil / air outlet system on one side of the transmission pipe. An air filter is provided at the end of the transmission pipe away from the oil / air outlet system. Multiple sets of L-shaped grooves with equal spacing are provided on the inner wall of the air filter, and activated carbon blocks are provided inside the air filter. This utility model not only realizes convenient disassembly and replacement of activated carbon blocks and maintenance of pipelines without stopping the machine, but also facilitates the blowing and discharge of residual cooling oil in the mold and the switching of compressed gas supply channels, and improves the convenience of cleaning cooling oil and the stability of device operation.

Description

Technical Field

[0001] This utility model relates to the technical field of oil return devices, specifically a centralized oil return device for air blowing in a cooler. Background Technology

[0002] Currently, water is the primary cooling medium used in die-casting molds. Leaks can lead to serious safety accidents if this water comes into contact with flammable and explosive substances like magnesium. Therefore, a safe, efficient, and stable cooling and temperature control device suitable for magnesium alloy die-casting is needed. This device typically uses cooling oil to cool the mold. However, due to the viscosity of the cooling oil, some oil remains inside the mold after cooling, resulting in losses. To reduce these losses and improve cooling efficiency, a centralized air-blowing oil return device for the cooling machine is proposed.

[0003] A lubricating oil return and cooling device, as disclosed in authorization announcement number CN220249633U, includes a housing, a top plate, and an oil pump. A first filter cylinder is located at one end of the housing, and a second filter cylinder is located at the other end. The top plate covers the top of the housing, and an oil inlet is located directly above the first filter cylinder on the top plate, connecting to an external lubricating oil delivery pipeline. A heat dissipation plate with several heat dissipation holes is also provided on the top plate. The oil pump is installed at the end of the top plate away from the oil inlet, and has an oil inlet pipe and an oil outlet pipe. The oil inlet pipe passes through the top plate and extends into the second filter cylinder. The oil outlet pipe connects to an external lubricating oil delivery pipeline.

[0004] Although it can cool down the lubricating oil in mechanical equipment and then recycle it, it does not solve the problems of the existing oil return device being inconvenient to disassemble and replace activated carbon blocks and maintain pipelines without stopping the machine, and is not conducive to blowing out the residual cooling oil in the mold and switching the channel to supply compressed gas, which affects the convenience of cleaning cooling oil and the stability of device operation. Utility Model Content

[0005] The purpose of this utility model is to provide a centralized air-blowing oil return device for a cooler, in order to solve the problems mentioned in the background art, such as the inconvenience of disassembling and replacing activated carbon blocks and maintaining pipelines without stopping the machine, the difficulty in blowing out residual cooling oil in the mold and switching channels to supply compressed gas, which affect the convenience of cleaning cooling oil and the stability of device operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a centralized oil return device for a cooling machine, comprising an oil tank and an oil return device body. The oil return device body is provided on the side wall of the oil tank, and the oil return device body is connected to the oil outlet of the mold through an oil return pipeline. An oil / air outlet system is provided outside the oil tank. A transmission pipe is provided at the top of the oil / air outlet system. Multiple sets of connecting pipes are provided at the top of the oil / air outlet system on one side of the transmission pipe. An air filter is provided at the end of the transmission pipe away from the oil / air outlet system. Multiple sets of L-shaped grooves with equal spacing are provided on the inner wall of the air filter. An activated carbon block is provided inside the air filter. Multiple sets of limiting blocks with equal spacing are provided on the outer wall of the activated carbon block, and the limiting blocks are slidably connected to the L-shaped grooves. An air outlet pipe is provided at the bottom of the air filter, and the air outlet pipe is threadedly connected to the air filter.

[0007] Preferably, a valve body is provided at the bottom end of the air outlet pipe, and a diverter block is movably provided inside the valve body.

[0008] Preferably, a first air inlet pipe is provided on the side wall of the valve body, and a second air inlet pipe is provided on the side wall of the valve body on the same side as the first air inlet pipe.

[0009] Preferably, the inside of the diverter block is provided with a first channel, and the first air inlet pipe is connected to the air outlet pipe through the first channel.

[0010] Preferably, a second channel is provided inside the diversion block on one side of the first channel, and the second air inlet pipe is connected to the air outlet pipe through the second channel.

[0011] Preferably, a movable shaft is movably installed at the center of the valve body, and the movable shaft extends into the interior of the valve body and is connected to the flow divider block.

[0012] Preferably, a handle is provided on the surface of the movable shaft outside the valve body, and a locking pin is provided at the end of the handle away from the movable shaft.

[0013] Preferably, a placement ring is provided on the outer wall of the valve body, and a locking pin can extend into the hole on the surface of the placement ring, and the locking pin is threadedly connected to the handle and the placement ring respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the oil return device not only realizes the convenient disassembly and replacement of activated carbon blocks and maintenance of pipelines without stopping the machine, but also facilitates the blowing and cleaning of residual cooling oil in the mold and the switching of channels to supply compressed gas, and improves the convenience of cleaning cooling oil and the stability of device operation.

[0015] (1) Connect the external compressed air source to the first and second air inlet pipes respectively through flexible pipes. Connect the air inlet of the mold to one of the connecting pipes. After the mold is cooled by cooling oil, due to the viscosity of the cooling oil, some cooling oil will remain inside the mold. The external compressed gas enters the air filter through the first air inlet pipe-first channel-exit pipe. The activated carbon block filters and absorbs the moisture in the compressed gas to ensure that the compressed gas is dry. The filtered gas enters the oil / air outlet system through the transmission pipe and enters the mold through the connecting pipe. The dry gas blows out the residual cooling oil in the mold. The blown-out cooling oil passes through the connecting pipe. After the return oil line enters the oil / air outlet system, it enters the oil tank to clean the residual cooling oil in the mold. After long-term use, the filtration effect of the activated carbon block will deteriorate. Simply unscrew the air outlet pipe from the surface of the air filter, rotate the activated carbon block counterclockwise, and the activated carbon block will drive the limiting block to slide inside the L-shaped groove. When the limiting block rotates to the turning position of the L-shaped groove, pull out the activated carbon block to remove it from the air filter. Then replace it with a new activated carbon block and install it back. This achieves convenient disassembly and replacement of the activated carbon block, facilitates the blowing and cleaning of residual cooling oil in the mold, and improves the convenience of cleaning cooling oil.

[0016] (2) Loosen the locking pin and pull it out from the inside of the placement ring and handle. Turn the handle to drive the movable shaft to rotate, and the movable shaft to drive the diverter block to rotate. The diverter block will block the outlet pipe and the first inlet pipe. Rotate the second channel between the outlet pipe and the second inlet pipe to form an open channel of second inlet pipe-second channel-outlet pipe. Compressed gas will continue to be supplied to the inside of the outlet pipe through the second inlet pipe and the second channel. Reinsert the locking pin to fix the handle and the placement ring. Then, remove the hose corresponding to the first inlet pipe for maintenance. This will prevent the equipment from shutting down due to maintenance, ensure the stability of the device operation, facilitate the switching of the channel to supply compressed gas, and improve the stability of the device operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the oil / gas outlet system of this utility model;

[0020] Figure 4 This is a side view sectional structural diagram of the valve body of this utility model;

[0021] Figure 5 This is a three-dimensional exploded structural diagram of the air filter and activated carbon block of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the valve body of this utility model.

[0023] In the diagram: 1. Oil return device body; 2. Oil / air outlet system; 3. Air filter; 4. Transmission pipe; 5. Oil tank; 6. Connecting pipe; 7. Valve body; 8. Air outlet pipe; 9. Movable shaft; 10. Diverter block; 11. First air inlet pipe; 12. Second air inlet pipe; 13. First channel; 14. Second channel; 15. L-shaped groove; 16. Activated carbon block; 17. Limiting block; 18. Placement ring; 19. Handle; 20. Locking pin. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Please see Figure 1-6 This utility model provides an embodiment of a cooling machine air blowing centralized oil return device, including an oil tank 5 and an oil return device body 1. The oil return device body 1 is provided on the side wall of the oil tank 5, and the oil return device body 1 is connected to the oil outlet of the mold through an oil return pipeline. An oil / air outlet system 2 is provided outside the oil tank 5. A transmission pipe 4 is provided at the top of the oil / air outlet system 2. Multiple sets of connecting pipes 6 are provided at the top of the oil / air outlet system 2 on one side of the transmission pipe 4. An air filter 3 is provided at the end of the transmission pipe 4 away from the oil / air outlet system 2. Multiple sets of L-shaped grooves 15 with equal spacing are provided on the inner wall of the air filter 3. An activated carbon block 16 is provided inside the air filter 3. Multiple sets of limiting blocks 17 with equal spacing are provided on the outer wall of the activated carbon block 16, and the limiting blocks 17 are slidably connected to the L-shaped grooves 15. An air outlet pipe 8 is provided at the bottom of the air filter 3, and the air outlet pipe 8 is threadedly connected to the air filter 3.

[0026] Before using the device, the oil return device body 1 needs to be connected to the oil outlet of the mold through the oil return pipeline. The external compressed air source is connected to the first air inlet pipe 11 and the second air inlet pipe 12 through flexible pipes. The air inlet of the mold is connected to one of the sets of connecting pipes 6. After the mold is cooled by the cooling oil, due to the viscosity of the cooling oil, some cooling oil will remain inside the mold. At this time, the external air source is turned on, and the external compressed gas enters the air filter 3 through the channel of the first air inlet pipe 11-first channel 13-air outlet pipe 8. The activated carbon block 16 filters and absorbs the moisture in the compressed gas to ensure that the compressed gas is dry. The filtered gas enters the oil / air outlet system 2 through the transmission pipe 4 and enters the mold through the connecting pipe 6. The dry gas removes the residual moisture in the mold. The cooling oil is blown out and enters the oil / air outlet system 2 through the return oil pipe and then enters the oil tank 5 to clean the residual cooling oil in the mold. After long-term use, the filtration effect of the activated carbon block 16 will deteriorate. Simply unscrew the air outlet pipe 8 from the surface of the air filter 3 and rotate the activated carbon block 16 counterclockwise. The activated carbon block 16 will drive the limiting block 17 to slide inside the L-shaped groove 15. When the limiting block 17 rotates to the turning position of the L-shaped groove 15, pull out the activated carbon block 16 to remove it from the air filter 3. Then replace it with a new activated carbon block 16 and install it back. This realizes convenient disassembly and replacement of activated carbon blocks, which facilitates the blowing and cleaning of residual cooling oil in the mold and improves the convenience of cleaning cooling oil.

[0027] A valve body 7 is provided at the bottom end of the air outlet pipe 8, and a flow divider 10 is movably provided inside the valve body 7. A first air inlet pipe 11 is provided on the side wall of the valve body 7, and a second air inlet pipe 12 is provided on the side wall of the valve body 7 on one side of the first air inlet pipe 11.

[0028] The inside of the diversion block 10 is provided with a first channel 13, and the first air inlet pipe 11 is connected to the air outlet pipe 8 through the first channel 13. The inside of the diversion block 10 on one side of the first channel 13 is provided with a second channel 14, and the second air inlet pipe 12 is connected to the air outlet pipe 8 through the second channel 14.

[0029] A movable shaft 9 is movably installed at the center of the valve body 7, and the movable shaft 9 extends into the interior of the valve body 7 and is connected to the flow divider block 10;

[0030] A handle 19 is provided on the surface of the movable shaft 9 outside the valve body 7. A locking pin 20 is provided at the end of the handle 19 away from the movable shaft 9. A placement ring 18 is provided on the outer wall of the valve body 7. The locking pin 20 can extend into the hole on the surface of the placement ring 18. The locking pin 20 is threadedly connected to the handle 19 and the placement ring 18 respectively.

[0031] When maintenance is required on the flexible pipe corresponding to the first air inlet pipe 11, loosen the locking pin 20 and pull it out from inside the placement ring 18 and handle 19. Rotate the handle 19, which drives the movable shaft 9 to rotate. The movable shaft 9 then drives the diverter block 10 to rotate, blocking the outlet pipe 8 and the first air inlet pipe 11. Rotate the second channel 14 between the outlet pipe 8 and the second air inlet pipe 12, forming an open channel of the second air inlet pipe 12-the second channel 14-the outlet pipe 8. Compressed gas continues to be supplied to the interior of the outlet pipe 8 through the second air inlet pipe 12 and the second channel 14. Reinsert the locking pin 20, which secures the handle 19 and the placement ring 18. Then, the flexible hose corresponding to the first air inlet pipe 11 can be disassembled for maintenance. This avoids equipment downtime due to maintenance, ensures the stability of the device operation, facilitates switching of the channel for compressed gas supply, and improves the stability of the device operation.

[0032] Working principle: Before using this device, the oil return device body 1 needs to be connected to the oil outlet of the mold through the oil return pipeline. An external compressed air source is connected to the first air inlet pipe 11 and the second air inlet pipe 12 through flexible pipes. The air inlet of the mold is connected to one of the sets of connecting pipes 6. After the mold is cooled by cooling oil, due to the viscosity of the cooling oil, some cooling oil will remain inside the mold. At this time, the external air source is turned on, and the external compressed gas enters the air filter 3 through the channel of the first air inlet pipe 11-first channel 13-outlet pipe 8, where it is cooled by the activated carbon block 16. The compressed gas is filtered and absorbed to ensure it is dry. The filtered gas enters the oil / air outlet system 2 through the transmission pipe 4, and then enters the mold through the connecting pipe 6. The dry gas blows out the residual cooling oil in the mold. The blown-out cooling oil enters the oil / air outlet system 2 through the oil return pipe and then enters the oil tank 5, thus cleaning the residual cooling oil in the mold. After long-term use, the filtration effect of the activated carbon block 16 will deteriorate. Simply unscrew the air outlet pipe 8 from the surface of the air filter 3 and rotate the activated carbon block counterclockwise. 16. The activated carbon block 16 drives the limiting block 17 to slide inside the L-shaped groove 15. When the limiting block 17 rotates to the turning position of the L-shaped groove 15, pull out the activated carbon block 16 to remove it from the air filter 3. Then replace it with a new activated carbon block 16 and install it back. When maintenance is required on the flexible pipe corresponding to the first air intake pipe 11, loosen the locking pin 20 and pull it out from the placement ring 18 and handle 19. Rotate the handle 19, which drives the movable shaft 9 to rotate, and the movable shaft 9 drives the diverter block 10 to rotate. The flow divider 10 blocks the outlet pipe 8 and the first inlet pipe 11. The second channel 14 is rotated to the space between the outlet pipe 8 and the second inlet pipe 12, forming an open channel between the second inlet pipe 12, the second channel 14, and the outlet pipe 8. Compressed gas continues to be supplied to the interior of the outlet pipe 8 through the second inlet pipe 12 and the second channel 14. The locking pin 20 is reinserted, and the handle 19 and the placement ring 18 are fixedly connected by the locking pin 20. After that, the hose corresponding to the first inlet pipe 11 can be disassembled for maintenance. The above is the complete usage of the cooling machine blowing centralized oil return device.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A centralized oil return device for air blowing in a cooler, comprising an oil tank (5) and an oil return device body (1), characterized in that: The oil tank (5) is provided with an oil return device body (1) on its side wall, and the oil return device body (1) is connected to the oil outlet of the mold through an oil return pipeline. An oil / air outlet system (2) is provided outside the oil tank (5). A transmission pipe (4) is provided at the top of the oil / air outlet system (2). Multiple sets of connecting pipes (6) are provided at the top of the oil / air outlet system (2) on one side of the transmission pipe (4). An air filter (3) is provided at the end of the transmission pipe (4) away from the oil / air outlet system (2). Multiple sets of L-shaped grooves (15) with equal spacing are provided on the inner wall of the air filter (3). An activated carbon block (16) is provided inside the air filter (3). Multiple sets of limiting blocks (17) with equal spacing are provided on the outer wall of the activated carbon block (16). The limiting blocks (17) are slidably connected to the L-shaped grooves (15). An air outlet pipe (8) is provided at the bottom of the air filter (3). The air outlet pipe (8) is threadedly connected to the air filter (3).

2. The cooling machine air blowing centralized oil return device according to claim 1, characterized in that: The bottom end of the air outlet pipe (8) is provided with a valve body (7), and a diverter block (10) is movably provided inside the valve body (7).

3. A centralized air blowing and oil return device for a cooler according to claim 2, characterized in that: A first air inlet pipe (11) is provided on the side wall of the valve body (7), and a second air inlet pipe (12) is provided on the side wall of the valve body (7) on the side of the first air inlet pipe (11).

4. A centralized air blowing and oil return device for a cooler according to claim 2, characterized in that: The diverter block (10) has a first channel (13) inside, and the first air inlet pipe (11) is connected to the air outlet pipe (8) through the first channel (13).

5. A centralized air blowing and oil return device for a cooler according to claim 4, characterized in that: The second channel (14) is provided inside the diversion block (10) on one side of the first channel (13), and the second air inlet pipe (12) is connected to the air outlet pipe (8) through the second channel (14).

6. A centralized air blowing and oil return device for a cooler according to claim 2, characterized in that: A movable shaft (9) is movably installed at the center of the valve body (7), and the movable shaft (9) extends into the interior of the valve body (7) and is connected to the diverter block (10).

7. A centralized air blowing and oil return device for a cooler according to claim 2, characterized in that: A handle (19) is provided on the surface of the movable shaft (9) outside the valve body (7), and a locking pin (20) is provided at the end of the handle (19) away from the movable shaft (9).

8. A centralized air blowing and oil return device for a cooler according to claim 2, characterized in that: The valve body (7) has a placement ring (18) on its outer wall, and a locking pin (20) can extend into the hole on the surface of the placement ring (18), and the locking pin (20) is threadedly connected to the handle (19) and the placement ring (18) respectively.

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