Hydraulic baling press oil cooler

Abstract

The utility model provides a hydraulic packing machine is with oil cooler relates to heat exchanger technical field, the utility model discloses a cooling device, the cooling device includes the shell shell, wherein the shell shell can be detachably installed in the side of horizontal packing machine, the inside of shell shell is provided with copper pipe, wherein the copper pipe is in the shell shell inside and divides the internal space of shell shell into two parts opposite closed space, the hydraulic oil of horizontal hydraulic packing machine enters one space in two closed spaces, and the hydraulic oil in hydraulic oil pipeline enters filter assembly, utilizes the filter cloth in filter assembly to filter hydraulic oil, and the filtered hydraulic oil enters copper pipe again to avoid the hydraulic oil with impurity entering copper pipe interior and being easy to block up copper pipe.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to an oil cooler for hydraulic balers. Background Technology

[0002] In waste compression and baling operations, the hydraulic system of a hydraulic baler supplies pressurized hydraulic oil through a hydraulic unit, driving the baling hydraulic cylinder to extend and retract, thereby compressing the waste. During this process, the hydraulic oil generates a large amount of heat due to continuous work, causing the oil temperature to rise.

[0003] In the prior art, the oil coolers used in hydraulic balers have the following shortcomings: impurities are easily mixed into the hydraulic oil during the circulation process, and existing coolers usually lack an effective filtration mechanism. Impurities can easily cause blockages after entering the cooling pipes (such as copper pipes), further reducing the cooling effect and even causing hydraulic system failure. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an oil cooler for hydraulic balers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an oil cooler for a hydraulic baler, comprising a cooling device, wherein the cooling device comprises a shell, wherein the shell is detachably mounted on the side of a horizontal baler, and a copper pipe is provided inside the shell, wherein the copper pipe divides the internal space of the shell into two relatively enclosed spaces, and the hydraulic oil of the horizontal hydraulic baler enters one of the two enclosed spaces.

[0006] The aforementioned components achieve the following effect: the coolant is in another enclosed space, where heat exchange between the coolant and hydraulic oil cools it down. The hydraulic unit of the horizontal hydraulic baler provides pressurized hydraulic oil, which drives the extension and retraction of the baling hydraulic cylinder. When it is necessary to compress and bale waste, similar waste (such as aluminum cans, waste paper, and other recyclable waste) is first thrown into the feed inlet. The waste enters the horizontal baler through the feed inlet, and the extended baling hydraulic cylinder drives the pressure plate to compress and squeeze the waste. Then, the baling hydraulic cylinder retracts appropriately, allowing manual labor to thread ropes through the compressed waste for initial binding. The waste is then further compressed and the ropes are tightened to complete the baling. The hydraulic oil is output through the hydraulic unit and passes through a cooling device. The hydraulic oil enters either of the two separated spaces (which can be the space inside the copper pipe or the space between the outer shell and the copper pipe) and the other separated space, where coolant is introduced. The coolant absorbs the temperature of the hydraulic oil and cools it down (it should be noted that the coolant is circulating, and air cooling can be set to cool the coolant). The reduced hydraulic oil temperature can prevent the aging of seals and extend the oxidation cycle of the hydraulic oil, ensuring the stability of the hydraulic system.

[0007] Preferably, the surface of the outer shell of the tube is fitted with an assembly frame, wherein the assembly frame is detachably mounted to the outside of the horizontal packing machine by means of bolts.

[0008] The effect achieved by the above components is that the assembly frame can be mounted on the outside of the horizontal packing machine through the threaded connection, and the cooling device can be detached and installed.

[0009] Preferably, the two ends of the outer shell are sealed, and multiple copper tubes pass through the two ends of the outer shell and are sealed. The two ends of the outer shell are fitted with caps by flanges, and a sealing gasket is provided between the caps and the outer shell for sealing. The surface of the outer shell is provided with an inlet and an outlet, wherein the inlet and outlet are connected to the outer shell.

[0010] The effect achieved by the above components is that hydraulic oil can enter the copper pipe from one side of the cover and flow out from the other side of the cover, and coolant can flow in from the inlet of the pipe shell and flow out from the outlet. During this process, heat exchange is completed to cool down (or: coolant enters the copper pipe from one side of the cover and flows out from the other side of the cover, and hydraulic oil flows in from the inlet of the pipe shell and flows out from the outlet. During this process, heat exchange is completed to cool down).

[0011] Preferably, a liquid separator is provided inside the cap on one side, wherein the liquid separator divides the area between the cap and the outer shell port into three sealing areas. The liquid separator is provided with an oil outlet and an oil inlet at the positions of the three sealing areas respectively, wherein two oil inlets are provided. A liquid separator is provided inside the cap on the other side, wherein the liquid separator divides the area between the cap and the outer shell port into two sealing areas.

[0012] The effect achieved by the above components is that hydraulic oil enters the cap from two inlets, then enters the copper pipe to the other side of the cap, then flows into the sealing area at the initial cap outlet from the copper pipe, and finally flows out from the outlet. By setting the above steps, the flow path length of the hydraulic oil can be maximized, thereby ensuring the heat exchange efficiency of the hydraulic oil. The inlets and outlets are connected in series in the hydraulic pipeline, and the liquid in the inlets and outlets is circulated by an external heat exchanger circulation pump to ensure that the internal coolant temperature is low.

[0013] Preferably, the surfaces of the plurality of copper tubes are provided with a plurality of isolation plates, wherein the isolation plates are fixed to the inner wall of the outer shell of the tube.

[0014] The effect achieved by the above-mentioned components is that the staggered arrangement of the isolation plates ensures that the coolant flowing into the casing moves up and down, extending the flow time of the coolant and thus ensuring the heat exchange effect.

[0015] Preferably, the oil inlet is connected to a hydraulic oil pipeline via a filter assembly. The hydraulic oil in the hydraulic oil pipeline enters the filter assembly, and the filter cloth in the filter assembly filters the hydraulic oil.

[0016] The effect achieved by the above components is to prevent impurities in the hydraulic oil from entering the copper pipe and clogging it.

[0017] Preferably, the filter assembly includes a mounting flange, wherein the mounting flange is detachably mounted on the oil inlet, a pipe body is mounted on the upper end of the mounting flange, a housing is fixedly fitted on the surface of the pipe body, a filter cloth is disposed inside the housing, and a rotating roller is disposed inside the filter cloth, wherein the rotating roller stretches the filter cloth taut inside the housing and covers the pipe body, and the side of the housing is connected to the hydraulic oil pipeline.

[0018] The effect achieved by the above components is that hydraulic oil flows from the pipeline into the housing, is filtered through the filter cloth, enters the pipe body, and finally enters the cooling device.

[0019] Preferably, the interior of the housing is provided with a sliding groove, a sliding seat is slidably connected inside the sliding groove, a movable roller is rotatably connected to the surface of the sliding seat, the movable roller is attached to the surface of the filter cloth, and a spring is fixedly connected between the sliding groove and the sliding seat.

[0020] The effect achieved by the above components is that the elastic force of the spring always keeps the movable roller pressing the filter cloth to ensure that the filter cloth is taut.

[0021] Preferably, the port of the tube is fixedly connected to an arc-shaped support, the upper end of the support is connected to the tube, and the filter cloth slides on the support.

[0022] The effect achieved by the above-mentioned components is that the curved edge of the support can prevent the filter cloth from being scratched.

[0023] Preferably, a storage box is detachably provided at the bottom of the housing, a brush is provided inside the housing and is attached to the outer surface of the filter cloth, and a collection hopper is provided inside the filter cloth, wherein one side of the collection hopper is in contact with the filter cloth.

[0024] The effect achieved by the above components is that the roller extends out of the housing (it can pass through the housing and be rotated by external power through a sealed bearing). During the rotation of the filter cloth, the debris adhering inside is scraped off by the collection hopper (the housing can be removed to clean the debris in the collection hopper), and the debris on the outside of the filter cloth can be cleaned by the brush and settled into the storage box.

[0025] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0026] In this invention, a process of filtering followed by cooling is employed. This process not only extends the fluid path and optimizes the contact area to improve heat exchange efficiency, but also prevents impurities from clogging the copper pipes through multi-stage filtration. Ultimately, this achieves stable cooling of the hydraulic oil, avoiding problems such as seal aging and hydraulic oil oxidation caused by excessively high oil temperatures. This ensures the long-term stable operation of the hydraulic baler. The hydraulic oil in the hydraulic oil pipeline enters the filter assembly, where the filter cloth filters the hydraulic oil. The filtered hydraulic oil then enters the copper pipes to prevent impurities from entering the copper pipes and clogging them. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a horizontal packing machine;

[0028] Figure 2 This invention presents a schematic diagram of the first embodiment of an oil cooler for a hydraulic baler.

[0029] Figure 3 for Figure 2 Partial disassembly diagram;

[0030] Figure 4 This utility model Figure 3 A schematic diagram of the copper tubing inside the outer shell of the central tube;

[0031] Figure 5 This invention presents a schematic diagram of the second embodiment of the oil cooler for a hydraulic baler.

[0032] Figure 6 This utility model Figure 5 Internal structure diagram;

[0033] Figure 7 This utility model Figure 6 A partial schematic diagram of the moving roller in the middle;

[0034] Figure 8 This utility model Figure 6 Enlarged view of point A in the middle.

[0035] Legend: 1. Horizontal baler; 2. Feed inlet; 3. Hydraulic unit; 4. Baling hydraulic cylinder; 5. Cooling device; 51. Assembly frame; 52. Tube shell; 53. Liquid inlet; 54. Liquid outlet; 55. Cover; 56. Oil outlet; 57. Oil inlet; 58. Copper pipe; 59. Liquid separator; 6. Filter assembly; 61. Mounting flange; 62. Shell; 63. Filter cloth; 64. Rotary roller; 65. Tube body; 66. Storage box; 67. Movable roller; 68. Slide chute; 69. Collection hopper; 610. Support. Detailed Implementation

[0036] Example 1, as Figure 1-4As shown, the hydraulic baler uses an oil cooler, including a cooling device 5. The cooling device 5 includes a shell 52, which is detachably mounted on the side of the horizontal baler 1. A copper pipe 58 is installed inside the shell 52, dividing the internal space of the shell 52 into two relatively enclosed spaces. The hydraulic oil of the horizontal hydraulic baler enters one of these enclosed spaces, while the coolant remains in the other. Heat exchange occurs between the coolant and the hydraulic oil, resulting in cooling. The hydraulic unit 3 of the horizontal hydraulic baler provides pressurized hydraulic oil, which drives the baling hydraulic cylinder 4 to extend and retract. When compressing and baling waste, similar types of waste (such as aluminum cans, waste paper, and other recyclable waste) are first placed into the feed inlet 2. Waste enters the horizontal baler 1 through the feed inlet 2. The extended baling hydraulic cylinder 4 drives the pressure plate to compress and squeeze the waste. Then, the baling hydraulic cylinder 4 retracts appropriately so that the compressed waste can be initially tied with rope. The waste is then further compressed and the rope is tightened to complete the baling. The hydraulic oil is output through the hydraulic unit 3 and passes through the cooling device 5. The hydraulic oil enters either of the two separated spaces (which can be the internal space of the copper pipe 58 or the space between the outer shell 52 and the copper pipe 58) and the other separated space is filled with coolant. The coolant absorbs the temperature of the hydraulic oil and cools it down (it should be noted that the coolant is circulating and can be cooled by air cooling). The lower temperature of the hydraulic oil can prevent the aging of the seals and extend the oxidation cycle of the hydraulic oil to ensure the stability of the hydraulic system.

[0037] An assembly frame 51 is fitted onto the surface of the outer casing 52. The assembly frame 51 is detachably mounted to the outside of the horizontal baler 1 using bolts. A threaded connection allows the assembly frame 51 to be mounted on the outside of the horizontal baler 1, enabling the detachable installation of the cooling device 5. Both ends of the outer casing 52 are sealed, and multiple copper tubes 58 pass through and are sealed at both ends. Flanges at both ends of the outer casing 52 are fitted with caps 55, with a sealing gasket between the caps 55 and the outer casing 52 for sealing. The surface of the outer casing 52 has an inlet 53 and an outlet 54. The inlet 53 and outlet 54 are connected to the outer casing 52. Hydraulic oil can enter the copper pipe 58 from one side cover 55 and flow out into the other side cover 55. Coolant can flow in from the inlet 53 of the outer casing 52 and flow out from the outlet 54, completing heat exchange and cooling during this process. (Alternatively, coolant can enter the copper pipe 58 from one side cover 55 and flow out into the other side cover 55, while hydraulic oil can flow in from the inlet 53 of the outer casing 52 and flow out from the outlet 54, completing heat exchange and cooling during this process.) A baffle plate 59 is provided inside one side cover 55, which holds the cover... The area between the cap 55 and the outer casing 52 is divided into three sealed areas. A baffle plate 59 is positioned with an oil outlet 56 and an oil inlet 57 relative to each of the three sealed areas, with two inlets 57. A baffle plate 59 is located inside the cap 55 on the other side, dividing the area between the cap 55 and the outer casing 52 into two sealed areas. Hydraulic oil enters the cap 55 through the two inlets 53, then flows through the copper pipe 58 to the other cap 55, and then flows from the copper pipe 58 into the sealed area at the initial cap 55's oil outlet 56. Finally, it flows out from the oil outlet 56. By setting the above steps, the flow path length of the hydraulic oil can be maximized, thereby ensuring the heat exchange efficiency of the hydraulic oil. The oil inlet 57 and the oil outlet 56 are connected in series in the hydraulic pipeline. The liquid in the inlet 53 and the outlet 54 is circulated by an external heat exchanger circulation pump to ensure that the internal coolant temperature is low. Multiple copper tubes 58 are provided with multiple isolation plates on their surfaces. The isolation plates are fixed to the inner wall of the tube shell 52. The isolation plates are arranged in an alternating manner to ensure that the flow trajectory of the coolant entering the tube shell 52 is fluctuating up and down, thus extending the flow time of the coolant and ensuring the heat exchange effect.

[0038] Example 2, as Figure 5-8As shown, based on Embodiment 1, the port of the oil inlet 57 is connected to the hydraulic oil pipeline via a filter assembly 6. The hydraulic oil in the hydraulic oil pipeline enters the filter assembly 6, where the filter cloth 63 filters the hydraulic oil. The filtered hydraulic oil then enters the copper pipe 58 to prevent impurities from entering and clogging the copper pipe 58. The filter assembly 6 includes a mounting flange 61, which is detachably mounted on the oil inlet 57. A pipe body 65 is mounted on the upper end of the mounting flange 61. A housing 62 is fixedly fitted onto the surface of the pipe body 65. A filter cloth 63 is installed inside the housing 62, and a rotating roller 64 is installed inside the filter cloth 63. The rotating roller 64 tightens the filter cloth 63 inside the housing 62 and covers the pipe body 65. The side of the housing 62 is connected to the hydraulic oil pipeline. The hydraulic oil flows into the housing 62 from the pipeline, is filtered by the filter cloth 63, enters the pipe body 65, and finally enters the cooling device 5. A sliding groove 68 is provided inside the housing 62, and the sliding groove 68 is connected to the cooling device 5. A sliding base is connected to the surface of the sliding base, and a movable roller 67 is rotatably connected to the surface of the filter cloth 63. The movable roller 67 is attached to the surface of the filter cloth 63. A spring is fixedly connected between the sliding groove 68 and the sliding base. The spring force always keeps the movable roller 67 pressing the filter cloth 63 to ensure that the filter cloth 63 is taut. An arc-shaped support 610 is fixedly connected to the end of the tube body 65. The upper end of the support 610 is connected to the tube body 65. The filter cloth 63 slides on the support. The arc edge of the support can prevent the filter cloth 63 from being scratched. A storage box is detachably installed at the bottom of the housing 62. 66. A brush is installed inside the housing 62 and is attached to the outer surface of the filter cloth 63. A collection hopper 69 is installed inside the filter cloth 63, with one side of the collection hopper 69 in contact with the filter cloth 63. A rotating roller 64 extends out of the housing 62 (it can pass through the housing 62 with the help of a sealed bearing and be externally powered to rotate). During the rotation of the filter cloth 63, the debris adhering inside is scraped off by the collection hopper 69 (the housing 62 can be removed to clean the debris in the collection hopper 69). The debris on the outside of the filter cloth 63 can be cleaned by the brush and settled into the storage box 66.

[0039] Working principle: When the hydraulic baler is working, the high-temperature hydraulic oil output from the hydraulic unit 3 first enters the filter assembly 6 of the cooling device 5 through pipelines. The filter assembly 6 is connected to the oil inlet 57 via the mounting flange 61. After the hydraulic oil flows in from the side of the housing 62, it is intercepted by the internally taut filter cloth 63. The filter cloth 63 is fixed in shape by the rotating roller 64, and the movable roller 67 is always in contact with the surface of the filter cloth 63 under the action of the spring, ensuring full utilization of the filtration area. Impurities in the hydraulic oil are trapped by the filter cloth 63, and impurities adhering to the surface of the filter cloth 63 are cleaned by the brush inside the housing 62 and fall into the removable storage box 66 at the bottom; the collection hopper 69 inside the filter cloth 63 further collects fine impurities, preventing impurities from entering the cooling system with the hydraulic oil. The filtered clean hydraulic oil enters the pipe body 65 through the arc-shaped support 610 (to prevent the filter cloth 63 from wearing), and finally enters the main body of the cooling device 5 through the oil inlet 57. (It should be noted that the purpose of cleaning the surface of the filter screen is to ensure that the flow rate of the filter screen is increased in a short time. When the equipment is not in use, drive the filter cloth 63 to rotate to clean the debris, then stop the machine to let the debris settle, and finally close the hydraulic line and disassemble the housing 62 to clean the debris settled inside.)

[0040] Clean hydraulic oil enters the sealed area at the end of the outer casing 52 through inlet 57 (two inlets 57 are provided on one side of the cover 55). This area is divided into three independent sealed zones by a baffle plate 59. The hydraulic oil then flows through copper pipe 58 into the other side cover 55 (divided into two sealed zones by the baffle plate 59), and then flows back through copper pipe 58 to the outlet 56 area of ​​the initial cover 55, finally flowing out from outlet 56. This path design significantly extends the flow distance of the hydraulic oil within the copper pipe 58, ensuring sufficient heat exchange. Simultaneously, coolant flows in through inlet 53 of the outer casing 52, flowing in the space between the outer casing 52 and the copper pipe 58. The insulating plates on the surface of the copper pipe 58 (fixed to the inner wall of the casing, distributed alternately) force the coolant to form an up-and-down undulating flow trajectory, extending the residence time of the coolant within the casing 62; in addition, the large contact area between the copper pipe 58 and the coolant allows the heat of the hydraulic oil to be efficiently transferred to the coolant through the wall of the copper pipe 58, achieving cooling. After absorbing heat, the coolant flows out from outlet 54 and can be cooled by the external heat exchanger circulation pump before being re-injected to ensure continuous cooling capacity. The caps 55 at both ends of the outer casing 52 are connected by flanges and sealed with gaskets. The copper pipe 58 is sealed at both ends of the outer casing to ensure that the hydraulic oil and coolant flow within their respective enclosed spaces, preventing cross-contamination and leakage. The partitioned design of the baffle plate 59 (3 sealing zones on one side and 2 on the other) further regulates the flow path of the hydraulic oil and coolant, allowing them to fully contact each other in reverse or cross-flow, maximizing heat exchange efficiency. The low-temperature hydraulic oil, having completed heat exchange, flows out from outlet 56 and re-enters the hydraulic pipeline, driving the extension and retraction of the baling hydraulic cylinder 4 to achieve waste compression and baling operations. Throughout the process, the cooling device 5 is stably installed on the side of the horizontal baler 1 via bolted connections to the mounting frame 51. Its detachable design facilitates later maintenance and component replacement.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. An oil cooler for a hydraulic baler, comprising a cooling device (5), characterized in that: The cooling device (5) includes a shell (52), which is detachably installed on the side of the horizontal baler (1). A copper pipe (58) is provided inside the shell (52), which divides the internal space of the shell (52) into two relatively closed spaces. The hydraulic oil of the horizontal baler (1) enters one of the two closed spaces.

2. The oil cooler for a hydraulic baler according to claim 1, characterized in that: The surface of the outer shell (52) of the tube is fitted with an assembly frame (51), wherein the assembly frame (51) is detachably mounted to the outside of the horizontal packing machine (1) by means of bolts.

3. The oil cooler for a hydraulic baler according to claim 1 or 2, characterized in that: The two ends of the outer shell (52) are sealed, and multiple copper tubes (58) pass through the two ends of the outer shell (52) and are sealed. The two ends of the outer shell (52) are fitted with caps (55) through flanges. A sealing gasket is provided between the caps (55) and the outer shell (52) for sealing. The surface of the outer shell (52) is provided with an inlet (53) and an outlet (54), wherein the inlet (53) and the outlet (54) are connected to the outer shell (52).

4. The oil cooler for a hydraulic baler according to claim 3, characterized in that: A liquid separator (59) is provided inside the cover (55) on one side. The liquid separator (59) divides the area between the cover (55) and the outer shell (52) into three sealing areas. The liquid separator (59) is provided with an oil outlet (56) and an oil inlet (57) at the positions of the three sealing areas respectively. There are two oil inlets (57). A liquid separator (59) is provided inside the cover (55) on the other side. The liquid separator (59) divides the area between the cover (55) and the outer shell (52) into two sealing areas.

5. The oil cooler for a hydraulic baler according to claim 4, characterized in that: Multiple isolation plates are provided on the surface of the multiple copper tubes (58), wherein the isolation plates are fixed to the inner wall of the outer shell (52).

6. The oil cooler for a hydraulic baler according to claim 5, characterized in that: The port of the oil inlet (57) is connected to the hydraulic oil pipeline through the filter assembly (6). The hydraulic oil in the hydraulic oil pipeline enters the filter assembly (6) and is filtered by the filter cloth (63) in the filter assembly (6).

7. The oil cooler for a hydraulic baler according to claim 6, characterized in that: The filter assembly (6) includes a mounting flange (61), which is detachably mounted on the oil inlet (57). A pipe body (65) is mounted on the upper end of the mounting flange (61). A housing (62) is fixedly fitted on the surface of the pipe body (65). A filter cloth (63) is provided inside the housing (62). A rotating roller (64) is provided inside the filter cloth (63). The rotating roller (64) stretches the filter cloth (63) tightly inside the housing (62) and covers the pipe body (65). The side of the housing (62) is connected to the hydraulic oil pipeline.

8. The oil cooler for a hydraulic baler according to claim 7, characterized in that: The housing (62) has a sliding groove (68) inside, and a sliding seat is slidably connected inside the sliding groove (68). A movable roller (67) is rotatably connected to the surface of the sliding seat. The movable roller (67) is attached to the surface of the filter cloth (63). A spring is fixedly connected between the sliding groove (68) and the sliding seat.

9. The oil cooler for a hydraulic baler according to claim 8, characterized in that: An arc-shaped support (610) is fixedly connected to the port of the tube (65), and the upper end of the support (610) is connected to the tube (65). The filter cloth (63) slides on the support.

10. The oil cooler for a hydraulic baler according to claim 9, characterized in that: The bottom of the housing (62) is detachably provided with a storage box (66), and a brush is provided inside the housing (62). The brush is attached to the outer surface of the filter cloth (63). A collection hopper (69) is provided inside the filter cloth (63), wherein one side of the collection hopper (69) is in contact with the filter cloth (63).

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