Hydraulic oil heater

Abstract

The utility model discloses a hydraulic oil heater which comprises a plugging cover, a connecting pipe penetrates through the plugging cover, the middle of the connecting pipe is of a spiral winding structure, the two ends of the connecting pipe penetrate out of the plugging cover, and a shockproof pipe which is arranged in the middle of the connecting pipe and used for fixing the connecting pipe to prevent shock is fixed to the bottom wall of the plugging cover. The utility model belongs to the technical field of hydraulic oil heaters, and particularly relates to a hydraulic oil heater.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic oil heaters, specifically referring to a hydraulic oil heater. Background Technology

[0002] In the field of construction machinery, the hydraulic system is the core power transmission component of equipment such as excavators. In low-temperature environments, the viscosity of hydraulic oil increases, leading to a decrease in fluidity and easily causing problems such as difficulty in starting and wear of pipelines.

[0003] Traditional hydraulic oil heating solutions often use electric heaters or external heat sources, but these have drawbacks such as high energy consumption, uneven heating, and safety hazards (such as short circuits in electric heating). Summary of the Invention

[0004] The technical problem to be solved by this utility model is that traditional hydraulic oil heating solutions mostly use electric heaters or external heat sources, but they have defects such as high energy consumption, uneven heating, and safety hazards.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: a hydraulic oil heater, including a sealing cover, a connecting pipe passing through the sealing cover, the middle part of the connecting pipe having a spiral coiled structure, and both ends protruding from the sealing cover, and a shock-absorbing pipe fixed on the bottom wall of the sealing cover and disposed in the middle part of the connecting pipe for fixing and shock-absorbing the connecting pipe.

[0006] Preferably, the sidewall of the shock-absorbing pipe is welded with a fixing sleeve, and both ends of the connecting pipe protrude from the fixing sleeve.

[0007] Preferably, the shock-absorbing tube is a hollow cylindrical structure.

[0008] Preferably, the sealing cap is provided with an oil inlet, the oil inlet is provided with a filling cap, and the filling cap integrates an exhaust valve and a breather valve.

[0009] Preferably, one end of the connecting pipe is inserted into the parking heater of the external excavator, and the other end is connected to the circulation pump and then inserted into the parking heater.

[0010] Preferably, the connecting pipe is a stainless steel pipe.

[0011] The beneficial effects achieved by adopting the above-described structure are as follows:

[0012] 1. The high-temperature exhaust gas discharged from the excavator's parking heater is introduced into the hydraulic oil through the connecting pipe with a spiral winding structure, which significantly extends the heat exchange path and contact area without the need for additional energy consumption.

[0013] 2. The design of the anti-vibration tube and the fixing sleeve effectively suppresses the displacement or vibration of the connecting pipe caused by equipment vibration, reduces the risk of air leakage at the interface, and extends the service life of the pipeline.

[0014] 3. The filler cap integrates an exhaust valve and a breather valve, which automatically adjusts the air pressure balance inside and outside the fuel tank to prevent the accumulation of oil vapor and the risk of deflagration, while also avoiding negative pressure that could cause the fuel tank to deform. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 3 .

[0018] The components include: 1. sealing cap, 2. connecting pipe, 3. shockproof pipe, 4. fixing sleeve, 5. oil inlet, and 6. oil filler cap. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] like Figure 1-3As shown, this utility model proposes a hydraulic oil heater, including a sealing cover 1, an oil inlet 5, and a filling cap 6 on the oil inlet 5. The filling cap 6 integrates an exhaust valve and a breather valve. A connecting pipe 2 passes through the sealing cover 1. The middle part of the connecting pipe 2 has a spiral coiled structure, and both ends protrude from the sealing cover 1. A shock-absorbing pipe 3 is fixed to the bottom wall of the sealing cover 1 and is located in the middle of the connecting pipe 2 to fix and prevent vibration. The sealing cover 1 is connected to the oil inlet 5 of the excavator's oil tank. The spiral coiled part of the connecting pipe 2 is inserted into the hydraulic oil. Hot air from the excavator's parking heater enters from one end of the connecting pipe 2, thus lengthening the path of the spiral coiled part of the connecting pipe 2 in the hydraulic oil to heat the hydraulic oil. The heated hot air is drawn out by a circulation pump and enters the parking heater for further heating to achieve circulating heating of the hydraulic oil.

[0022] like Figure 3 As shown, a fixing sleeve 4 is welded to the side wall of the shock-absorbing pipe 3. Both ends of the connecting pipe 2 pass through the fixing sleeve 4. The fixing sleeve 4 is used to fix the connecting pipe 2. The fixing sleeve 4 is welded to the side wall of the shock-absorbing pipe 3. After the two ends of the connecting pipe 2 pass through, they are radially locked to suppress lateral vibration displacement. The shock-absorbing pipe 3 is a hollow cylindrical structure. The shock-absorbing pipe 3 is welded to the bottom wall of the sealing cover 1 to form a rigid support base. The shock-absorbing pipe 3 transmits the vibration to the tank body for dispersion through the rigid connection between the bottom and the sealing cover 1.

[0023] like Figure 1 As shown, one end of the connecting pipe 2 is inserted into the parking heater of the external excavator, and the other end is connected to the circulation pump and then inserted into the parking heater. The connecting pipe 2 is a stainless steel pipe. Using stainless steel pipe as the material of the connecting pipe 2 has both high temperature resistance (parking heater exhaust gas) and hydraulic oil corrosion resistance, and is suitable for extreme working conditions from -40℃ to 200℃.

[0024] In practical use, the sealing cap 1 is sealed and installed on the oil filling port 5 of the excavator's hydraulic oil tank, ensuring that the anti-vibration pipe 3 is inserted vertically into the oil; one end of the connecting pipe 2 is connected to the exhaust outlet of the parking heater, and the other end is connected back to the air inlet of the parking heater through the circulation pump to form a closed circulation.

[0025] After the excavator is started, the high-temperature exhaust gas (about 120-180℃) generated by the parking heater passes through the spiral section of the connecting pipe 2 and exchanges heat fully with the low-temperature hydraulic oil through the pipe wall; the spiral structure forces the exhaust gas to flow along a multi-turn spiral path, and the oil temperature can be raised quickly.

[0026] During equipment operation, the side wall fixing sleeve 4 of the anti-vibration pipe 3 restrains the radial shaking of the connecting pipe 2, ensuring the pipeline's sealing performance.

[0027] The gas generated by the heating and evaporation of hydraulic oil is discharged through the breather valve of the filler cap 6, and external air is replenished through the exhaust valve to maintain the normal pressure of the oil tank.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hydraulic oil heater comprising a blanking cap (1), characterised in that: The connecting pipe (2) is penetrated through the sealing cover (1), the middle part of the connecting pipe (2) is spirally coiled, and both ends are penetrated out of the sealing cover (1), and the bottom wall of the sealing cover (1) is fixed with the shockproof pipe (3) arranged in the middle part of the connecting pipe (2) to fix and shockproof the connecting pipe (2).

2. A hydraulic oil heater according to claim 1, characterised in that: The sidewall of the shockproof pipe (3) is welded with the fixing sleeve (4), and both ends of the connecting pipe (2) are penetrated out of the fixing sleeve (4).

3. A hydraulic oil heater according to claim 1 or 2, characterised in that: The shockproof pipe (3) is hollow and in a cylindrical structure.

4. A hydraulic oil heater according to claim 3, wherein: The sealing cover (1) is provided with an oil inlet (5), the oil inlet (5) is provided with an oil cover (6), and the oil cover (6) is integrated with an exhaust valve and a breather valve.

5. A hydraulic oil heater according to claim 1, 2 or 4, characterised in that: One end of the connecting pipe (2) is inserted into the parking heater of the external excavator, and the other end is connected to the circulating pump and inserted into the parking heater.

6. A hydraulic oil heater according to claim 5, wherein: The connecting pipe (2) is a white steel pipe.

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