Pipeline inner wall oil injection lubrication treatment equipment

Abstract

The utility model relates to the technical field of pipeline inner wall oil injection equipment, and discloses pipeline inner wall oil injection lubrication treatment equipment, which adopts a single-hole oil injection mode, only injects oil at one end of a U-shaped pipe, and overcomes the defect that the pressure in the U-shaped pipe cannot be relieved during double-hole oil injection. The relative low-pressure state in the U-shaped pipe can be maintained through unilateral oil injection in cooperation with pressure relief of the exhaust nozzle, energy waste caused by 90% of oil mist leaking out of the oil injection port is reduced, no circulation cavity exists in the improved pipeline, oil is not left, the oil dripping phenomenon is eradicated, potential safety hazards caused by traditional oil injection are eliminated, the oil coating amount can be effectively saved on the basis of an existing structure, and the production cost is reduced. The exhaust nozzle is arranged at the other end of the U-shaped pipe and is conical, so that a part of air pressure can be blocked during oil injection, a certain volatile oil atomization air pressure can be kept in the U-shaped pipe, the pressure can be fully relieved when the pressure is increased, and atomized oil mist can effectively keep the pressure in a pipeline, so that the pipe wall is uniformly coated with oil; and the quality of the produced aluminum heat exchanger can be well controlled.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline inner wall oil spraying equipment, specifically a pipeline inner wall oil spraying lubrication treatment equipment. Background Technology

[0002] In existing technologies, when expanding the metal pipes of air conditioning aluminum tube heat exchangers, the low melting point, softness, and low density of aluminum lead to high friction, making it difficult for the tube expander to achieve a tight fit between the outer wall of the pipe and the fin holes. Considering overall cost, existing technologies mainly use oil spraying lubrication to pre-treat the inner wall of the aluminum tube. The tube expander needs to perform oil spraying lubrication on the inner wall of the aluminum tube before expansion to meet the requirements of the aluminum tube expansion process.

[0003] In existing technologies, during oil spraying, a PLC controls a solenoid valve to spray oil and blow air. The oil mist travels through a main pipe and splits into two nozzles at the nozzle, simultaneously blowing air and spraying oil onto both ends of a U-shaped aluminum tube to achieve oil spraying on the inner wall, as shown in the attached diagram. Figure 4 The diagram shown illustrates its working structure, which has the following defects:

[0004] 1. During the oiling process on the inner wall of the aluminum tube, the pressure inside the U-shaped pipe cannot be released, and most of the oil flows back out from the oil injection port, resulting in waste.

[0005] 2. After the oil spraying is completed, oil drips from the nozzle, falling onto the equipment surface and the ground, causing serious safety hazards.

[0006] 3. The oil mist cannot be completely formed, and the oil coating on the inner wall of the aluminum tube is uneven.

[0007] 4. The oil liquid in the pipeline has an uneven shape, making it difficult to dry in subsequent processes, resulting in poor product cleanliness and affecting product quality and lifespan.

[0008] Therefore, a pipe inner wall oil spraying lubrication treatment device is proposed. Utility Model Content

[0009] The purpose of this invention is to provide a pipeline inner wall oil spraying lubrication treatment device to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a pipeline inner wall oil spraying lubrication treatment device, including an oil tank, an air tank, an oil spraying control valve, an air jet control valve, and an oil spraying mechanism, wherein multiple air jet control valves and oil spraying control valves are provided, and the oil tank and air tank are respectively connected to the oil spraying control valve and the air jet control valve through pipelines;

[0011] The fuel injection mechanism includes a fuel nozzle mounting base, a fuel nozzle, an exhaust nozzle, and a connecting end pipe. The fuel nozzle and the exhaust nozzle are installed alternately at equal intervals on the lower part of the fuel nozzle mounting base. The fuel tank and the air tank are connected and controlled to the fuel nozzle through the cooperation of the fuel injection control valve and the air injection control valve. The connecting end pipe is installed on the upper docking side of the fuel nozzle mounting base.

[0012] Preferably, the above-mentioned fuel injection control valve and fuel jet control valve are combined in pairs to form a single-unit oil and gas control valve group. The discharge ends of the oil tank and the gas tank are respectively connected to the inlet ends of the fuel injection control valve and the fuel jet control valve through pipelines. The inlet sides of the oil tank and the gas tank are respectively equipped with a booster oil pump and a booster air pump.

[0013] Preferably, the nozzle mounting base is provided with bolt mounting holes on both sides, and mounting bolts are provided inside the bolt mounting holes. The nozzle mounting base is connected and installed to the frame of the oil injection equipment through the mounting bolts.

[0014] Preferably, the upper part of the above-mentioned nozzle mounting base is provided with end pipe mounting ports at equal intervals, the lower part of the connecting end pipe is fastened to the end pipe mounting ports by threads, and the discharge side of the oil injection control valve and the air jet control valve is provided with a manifold end pipe.

[0015] Preferably, the discharge side of the above-mentioned fuel injection control valve and jet control valve is connected to the input end of the manifold, the connecting end pipe at the top of the fuel injector is connected to the output end of the manifold through a pipeline, and a one-way valve is provided on the output side of the manifold.

[0016] Preferably, the lower part of the above-mentioned nozzle mounting base is provided with mounting ring seats at equal intervals, and the upper parts of the fuel injector and exhaust nozzle are respectively fastened to the screw holes in the middle of two adjacent sets of mounting ring seats by threads. The lower parts of the fuel injector and exhaust nozzle are provided with tapered connectors.

[0017] Preferably, an exhaust duct is installed on the connecting end pipe side of the upper part of the exhaust nozzle.

[0018] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0019] 1. Using a single-hole spraying method, oil is sprayed only at one end of the U-shaped tube, eliminating the disadvantage of the inability to release pressure inside the U-shaped tube when using a dual-hole spraying method.

[0020] 2. It adopts a conical exhaust structure, with an exhaust nozzle at the other end of the U-shaped tube. The exhaust nozzle is conical, which can block part of the air pressure during oil injection, so that a certain pressure of volatile oil atomization is maintained in the U-tube. It can also fully release pressure when the pressure rises, which can effectively maintain the pressure of atomized oil mist in the pipeline, so that the oil is evenly coated on the pipe wall, and can effectively control the quality of the produced aluminum heat exchangers.

[0021] 3. By improving the internal structure and air pressure matching of the fuel injector, the pressure relief of the exhaust nozzle on one side can maintain a relatively low pressure in the U-shaped pipe, reducing energy waste by 90% of the oil mist leakage from the injection port. In addition, the improved pipeline has no circulation chamber, so there will be no oil residue, eliminating oil dripping and eliminating the safety hazards caused by traditional fuel injection. It can effectively save the amount of oil applied on the existing structure. According to the actual data comparison after the improvement, the amount of oil applied is reduced by 50%. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall working structure of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the upper side of the oil injection mechanism of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the lower side of the oil injection mechanism of this utility model;

[0026] Figure 4 This is a schematic diagram of the working structure of the existing device of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Oil tank; 2. Gas tank; 3. Fuel injection control valve; 4. Air injection control valve; 5. Fuel nozzle mounting seat; 6. Fuel injector; 7. Exhaust nozzle; 8. Connecting end pipe; 9. Mounting ring seat; 10. End pipe mounting port; 11. Bolt mounting hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0030] Example

[0031] Please see Figure 1-4 This utility model provides a technical solution: a pipeline inner wall oil spraying lubrication treatment device, including an oil tank 1, an air tank 2, an oil spraying control valve 3, an air spraying control valve 4, and an oil spraying mechanism. The oil tank 1 and the air tank 2 are used for the supply and storage of oil and high-pressure air, respectively. In order to realize the energy storage and pressurization of oil and air, a booster oil pump and a booster air pump are respectively provided on the feed side of the oil tank 1 and the air tank 2.

[0032] Both jet control valve 4 and fuel injection control valve 3 are electromagnetically powered valve bodies, as detailed in the attached document. Figure 1 As shown, there are three of each of the jet control valve 4 and the fuel injection control valve 3. The fuel injection control valve 3 and the jet control valve 4 are paired together to form a single oil-gas control valve group, which is used to control the material supply on and off of oil tank 1 and gas tank 2 respectively. The discharge end of oil tank 1 and gas tank 2 is connected to the inlet end of fuel injection control valve 3 and jet control valve 4 respectively through pipelines. In order to facilitate oil-gas mixing, a manifold is provided on the discharge side of fuel injection control valve 3 and jet control valve 4. The discharge side of fuel injection control valve 3 and jet control valve 4 is connected to the input end of the manifold to realize the mixing and atomization of oil and gas.

[0033] The fuel injection mechanism is used for fuel injection. The mechanism includes a nozzle mounting base 5, a fuel nozzle 6, an exhaust nozzle 7, and a connecting pipe 8, as shown in the attached diagram. Figure 2 As shown, in order to connect and install with the equipment, bolt mounting holes 11 are provided on both sides of the nozzle mounting base 5. The bolt mounting holes 11 are equipped with mounting bolts. The nozzle mounting base 5 is connected and installed to the frame of the oil injection equipment through the mounting bolts. The working docking with the U-shaped aluminum tube port is completed by the equipment movement drive.

[0034] To facilitate pipe connection and installation, see attached... Figure 2 As shown, end pipe mounting ports 10 are equidistantly arranged on the upper part of the nozzle mounting base 5. The lower part of the connecting end pipe 8 is fastened to the end pipe mounting port 10 by threads. The connecting end pipe 8 on the upper part of the injector 6 is connected to the output end of the manifold end pipe through a pipeline. To prevent oil backflow, a one-way valve is provided on the output side of the manifold end pipe. The injector 6 and the exhaust nozzle 7 are connected and installed alternately at equal intervals on the lower part of the nozzle mounting base 5, as shown in the attached diagram. Figure 3 As shown, to facilitate the docking and installation of the fuel injector 6 and the exhaust nozzle 7, mounting ring seats 9 are evenly spaced at the lower part of the fuel injector mounting base 5. The upper parts of the fuel injector 6 and the exhaust nozzle 7 are fastened to the screw holes in the middle of the two adjacent sets of mounting ring seats 9 by threads. The oil tank 1 and the air tank 2 are connected to the fuel injector 6 through the cooperation of the fuel injection control valve 3 and the air injection control valve 4. A single-hole fuel injection method is used, and fuel is injected only at one end of the U-shaped tube, eliminating the disadvantage of the inability to release pressure in the U-shaped tube when using double-hole fuel injection. The lower part of the fuel injector 6 and the exhaust nozzle 7 are provided with a conical joint and a conical exhaust structure. An exhaust nozzle 7 is provided at the other end of the U-shaped tube. The exhaust nozzle 7 is conical and can block part of the air pressure during fuel injection, so that a certain pressure of volatile oil atomization gas is maintained in the U-tube. It can also fully release pressure when the pressure rises, which can effectively keep the atomized oil mist under pressure in the pipeline and keep the pipe wall. The oil coating is uniform. When the product's U-tube length is less than 700mm, the jet pressure is 0.4Mpa; when the product's U-tube length is greater than 1000mm, the jet pressure is 0.7Mpa. Different pressures ensure high-efficiency oil coating of the tube wall while maintaining the internal pressure of the U-tube. This allows for good control of the quality of the produced aluminum heat exchangers. By improving the internal structure of the oil spray and the air pressure matching relationship, the relatively low pressure state inside the U-tube can be maintained by using single-sided oil spray in conjunction with the pressure relief of the exhaust nozzle 7. This reduces energy waste by 90% due to oil mist leakage from the oil injection port. Furthermore, the improved pipeline has no circulation chamber inside, so there is no oil residue, eliminating oil dripping and the safety hazards caused by traditional oil spraying. It can effectively save oil coating amount on the existing structure. Through comparison of actual data after the improvement, the oil coating amount is reduced by 50%. To facilitate exhaust work, an exhaust duct is connected and installed on the connecting end pipe 8 at the upper part of the exhaust nozzle 7.

[0035] Working principle or structural principle: During operation, under program control, as shown in the attached... Figure 1 The injection control valves A1, A2, and A3 in the shown fuel injection control valve 3 and the jet control valves B1, B2, and B3 in the jet control valve 4 open simultaneously, converting the oil into atomized oil through air pressure at the mixing outlet. When the oil volume reaches the set value, the fuel injection control valves A1, A2, and A3 in the fuel injection control valve 3 stop, while the jet control valves B1, B2, and B3 in the jet control valve 4 continuously supply air pressure, resulting in continuous output of atomized oil mist. The atomized oil mist passes through the pipeline and one-way valve to the nozzles 1, 3, and 5 in the fuel injector 6, which are the injection ports. Then, the oil mist enters the U-shaped aluminum tube through the injection port of the fuel injector 6. After passing through the U-tube, at the right outlet, a portion of the pressure output is blocked by the conical exhaust nozzles 2, 4, and 6, causing the oil mist to form a rotating pressurized state on the inner wall of the pipeline. When oil mist appears at the right outlet of the U-tube, the blowing stops. Through the above process, the inner wall of the U-shaped aluminum tube is uniformly coated with oil.

[0036] In summary, using a single-hole oil spraying method, spraying oil only at one end of the U-shaped tube, eliminates the disadvantage of the inability to release pressure inside the U-shaped tube when using a double-hole oil spraying method. Furthermore, a conical exhaust structure is adopted, with an exhaust nozzle 7 at the other end of the U-shaped tube. The conical exhaust nozzle 7 blocks some air pressure during oil spraying, maintaining a certain pressure for the atomized volatile oil inside the U-shaped tube. It also allows for sufficient pressure release when the pressure rises, effectively maintaining pressure within the pipe to ensure uniform oil coating on the pipe wall. This allows for better quality control of the produced aluminum heat exchangers. By improving the internal structure of the oil nozzle and the air pressure matching relationship, single-sided oil spraying combined with the pressure release of the exhaust nozzle 7 maintains a relatively low pressure state inside the U-shaped tube, reducing energy waste by 90% due to oil mist leakage from the oil inlet. Moreover, the improved pipeline has no circulation chamber, eliminating oil residue and dripping, thus eliminating the safety hazards caused by traditional oil spraying. It effectively saves oil application on existing structures; actual data comparisons show a 50% reduction in oil application.

[0037] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A pipeline inner wall oil spraying lubrication treatment device, comprising an oil tank (1), an air tank (2), an oil spraying control valve (3), an air jet control valve (4), and an oil spraying mechanism, characterized in that: Multiple jet control valves (4) and fuel injection control valves (3) are provided. The oil tank (1) and air tank (2) are connected to the fuel injection control valve (3) and jet control valve (4) respectively through pipelines. The fuel injection mechanism includes a fuel nozzle mounting base (5), a fuel nozzle (6), an exhaust nozzle (7), and a connecting end pipe (8). The fuel nozzle (6) and the exhaust nozzle (7) are installed alternately at equal intervals on the lower part of the fuel nozzle mounting base (5). The oil tank (1) and the air tank (2) are connected and controlled to the fuel nozzle (6) through the cooperation of the fuel injection control valve (3) and the air jet control valve (4). The connecting end pipe (8) is installed on the upper docking side of the fuel nozzle mounting base (5).

2. The pipeline inner wall oil spraying lubrication treatment equipment according to claim 1, characterized in that: The oil injection control valve (3) and the jet injection control valve (4) are paired to form a single-unit oil and gas control valve group. The discharge ends of the oil tank (1) and the gas tank (2) are connected to the inlet ends of the oil injection control valve (3) and the jet injection control valve (4) respectively through pipelines. The inlet sides of the oil tank (1) and the gas tank (2) are respectively equipped with a booster oil pump and a booster air pump.

3. The pipeline inner wall oil spraying lubrication treatment equipment according to claim 2, characterized in that: The nozzle mounting base (5) is provided with bolt mounting holes (11) on both sides. The bolt mounting holes (11) are provided with mounting bolts. The nozzle mounting base (5) is connected to the frame of the oil injection equipment by the mounting bolts.

4. The pipeline inner wall oil spraying lubrication treatment equipment according to claim 3, characterized in that: The upper part of the nozzle mounting base (5) is provided with end pipe mounting ports (10) at equal intervals. The lower part of the connecting end pipe (8) is fastened to the end pipe mounting port (10) by threads. The discharge side of the oil injection control valve (3) and the air jet control valve (4) is provided with a manifold end pipe.

5. The pipeline inner wall oil spraying lubrication treatment equipment according to claim 4, characterized in that: The discharge side of the oil injection control valve (3) and the jet control valve (4) are connected to the input end of the manifold pipe. The connecting pipe (8) at the top of the oil injector (6) is connected to the output end of the manifold pipe through a pipeline. A one-way valve is provided on the output side of the manifold pipe.

6. The pipeline inner wall oil spraying lubrication treatment equipment according to claim 5, characterized in that: The lower part of the nozzle mounting base (5) is uniformly provided with mounting ring seats (9) at equal intervals. The upper parts of the nozzle (6) and the exhaust nozzle (7) are fastened to the screw holes in the middle of the two adjacent sets of mounting ring seats (9) by threads. The lower parts of the nozzle (6) and the exhaust nozzle (7) are provided with tapered connectors.

7. The pipeline inner wall oil spraying lubrication treatment equipment according to claim 6, characterized in that: An exhaust duct is connected to the upper end pipe (8) of the exhaust nozzle (7).

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