Inlet low-impact pulsating cleaning device for aviation equipment

Abstract

The utility model discloses an inlet low impact type pulsation cleaning device for aviation equipment, the flow area is unchangeable at the connection of liquid inlet pipe and pump source, the flow area of rear end first valve core and second valve core can be adjusted periodically, the sum of the flow area of first valve core and second valve core always keeps unchangeable, makes the pulsation cleaning effect of the pipeline that is washed, then makes the flow area of pulsation cleaning and the flow area of reflux oil tank always keep linear increase, another linear reduction, the quantity of increase and the area of reduction are completely consistent, the flow area of liquid inlet no matter end pulsation changes, the flow area of inlet always keeps unchangeable, there is no pressure impact at the liquid inlet in the pulsation switching process, need not configure large flow pump, adopts the mode of export shunt, and the inlet of cleaning device need not overflow, and there is no overflow loss, and oil liquid reflux adopts low pressure oil return mode, and the heating is small, and the energy -conserving effect is obvious, and the long -term use can save energy cost obviously.

Description

Technical Field

[0001] This utility model belongs to the field of aviation equipment cleaning technology, specifically relating to an inlet low-impact pulse cleaning device for aviation equipment. Background Technology

[0002] In the field of aviation support equipment, cleaning is a key step in ensuring the performance and extending the service life of aviation equipment. In particular, for core components such as engine fuel systems, hydraulic lines, and cooling circuits, efficient cleaning is required to remove residual oil, metal shavings, carbon deposits, and oxidation impurities from the internal parts. This prevents impurities from clogging valve channels or aggravating component wear, thereby preventing equipment failure.

[0003] The commonly used cleaning process for aviation equipment is: pipeline purging → soaking → ultrasonic cleaning → circulating flushing → drying. Circulating flushing is a crucial step in pipeline cleaning. The circulating system uses the actual media used in the pipeline system as the flushing medium, effectively preventing contamination from other cleaning media residues. The flushing circuit mainly consists of a flushing pump, a high-precision filter, and the pipeline to be flushed. The flushing circuit is established by connecting the pipeline to be flushed to the supply and return ports of the flushing circuit. The flushing pump pressurizes the flushing medium and pumps it to the supply filter, where excess material is filtered out before it enters the pipeline to be flushed. The flushed oil returns to the return filter in the flushing equipment for secondary filtration before returning to the equipment's liquid tank. Through continuous operation of the flushing circuit, the supply and return filters continuously remove excess material from the pipeline, ensuring that the number of particles of various sizes within the pipeline meets the cleaning process requirements.

[0004] Currently, there are three main technical approaches to circulating flushing: One method is the high-pressure continuous flushing mode, which uses a high-pressure pump to output a constant high-pressure fluid that directly impacts the interior of the component to be cleaned. While this type of device can achieve a strong effect in removing impurities, the high-pressure fluid can easily damage the precision internal walls of aerospace equipment, especially for lightweight components made of materials such as aluminum alloys and titanium alloys, potentially causing irreversible problems such as deformation and cracks. At the same time, aerospace pipelines have many bends, and the pressure of the high-pressure jet flushing medium drops rapidly after passing through the bends in the pipeline. This results in better flushing effects near the fluid inlet and poorer flushing effects further away from the fluid inlet, leading to a lower flushing pass rate.

[0005] Secondly, there is the low-pressure continuous flushing mode: Based on the fluid dynamics Reynolds number Re = (ρ × v × d) / μ (ρ: fluid density (unit: kg / m³), v: average fluid velocity (unit: m / s), d: pipe diameter (unit: m), μ: fluid dynamic viscosity (unit: Pa·s)), by increasing the fluid velocity inside the pipeline, Re ≥ 2300 can be achieved, making the fluid inside the pipeline turbulent. Utilizing the softening, shearing, and slag-carrying effects of the medium, the equipment achieves efficient flushing of the pipeline. Aviation equipment has a large pipe diameter range of DN4~DN125. Cleaning large-diameter pipelines requires extremely high flow rates. For example, the flow rate requirement to achieve turbulent flow in a DN125 pipeline is 23467.58 L / min, consuming a huge amount of energy, resulting in large equipment size and high cost. Generally, from an economic perspective, the low-pressure continuous flushing mode is mainly used for flushing pipelines with diameters of DN15 and below. It is compatible with a limited number of pipeline specifications and cannot meet the flushing needs of the vast majority of pipeline sizes.

[0006] Thirdly, there is the pulse cleaning mode. By installing a pulse cleaning device at the liquid supply port, the liquid supply port is periodically opened and closed or the flow area of ​​the liquid supply is changed to achieve a pulsed flow output of the flushing medium. This allows the equipment to produce a turbulent flushing effect that would otherwise require a large flow rate with a relatively small flow rate. The main characteristics of pulse cleaning compared to traditional cleaning equipment are: Pulse impact effect: The periodically changing flow rate forms a "pulse wave," generating a large instantaneous flow rate at the peak, directly impacting the dirt on the pipe wall, breaking the adhesion between the dirt and the substrate, and promoting its detachment. Cavitation effect: At the moment the flow rate rapidly decreases (pulse wave trough), the internal pressure of the flushing medium decreases, and a large number of tiny bubbles (cavitation bubbles) are always precipitated in the flushing fluid; subsequently, when the pressure rises, the bubbles rapidly burst, generating local high-frequency impacts and micro-jet streams, peeling off stubborn dirt, especially effective for dirt in narrow crevices. Turbulence enhancement effect: The pulsed flow breaks the traditional laminar flow state of constant flow, causing the cleaning fluid to form strong turbulence within the pipeline. The lateral mixing effect generated by turbulence allows the cleaning fluid to come into full contact with the dirt surface, while also carrying away the detached dirt in time to prevent secondary adhesion.

[0007] The main problems with pump-controlled pulse cleaning devices are: They output pulsed flow by changing the pump source's speed or oil pump displacement. Changing the pump source speed requires a frequency converter or servo controller. The pump source motor has high power, and to reduce harmonics, mechanical shock, and avoid motor overcurrent and overvoltage during speed adjustment, the switching time between 0 and mains frequency is usually no less than 8 seconds. This long switching time results in a relatively flat pulse wave at the end, leading to poor pulse effect. Variable displacement usually requires the introduction of a swashplate variable displacement mechanism and a proportional control valve, which is costly. Furthermore, during high-frequency displacement switching, the variable oil impacts the variable structure, causing malfunctions such as plate collision and abnormal overheating. Additionally, for liquid-cooled equipment, due to the low viscosity of the medium, an effective friction pair cannot be established, resulting in a very short pump lifespan.

[0008] The main problem with valve-controlled pulsating cleaning devices is that they achieve periodic pulsation of the fluid entering the pipeline being flushed by changing the output flow area of ​​the fluid supply. At the trough of the pulse, the flow area of ​​the pulsating device decreases sharply. Most of the flushing medium generated by the pump source experiences instantaneous pressure buildup between the pump source and the pulsating cleaning device, generating water hammer impacts. Pressure shock waves several times the rated pressure act on the pump source, pipeline, and pulsating cleaning device, producing abnormal vibrations and noise, severely affecting the service life of the flushing equipment. Simultaneously, when the flow rate decreases at the end, the excess flow generated by the pump source needs to overflow back to the oil tank, resulting in energy waste and severe equipment overheating.

[0009] In summary, traditional high-pressure continuous flushing methods have poor flushing effects far from the liquid supply port; low-pressure continuous flushing equipment has high flow rate requirements, high equipment cost, large footprint, and a small range of applicable pipe diameters; newer pump-controlled pulsation cleaning devices have poor pulsation effects, while valve-controlled pulsation cleaning devices suffer from periodic pressure shocks at the inlet, resulting in short equipment life, high noise, and significant energy waste. Addressing these technical pain points in the cleaning device industry, there is an urgent need for a new type of cleaning device with low inlet impact and periodic outlet flow rate pulsation, adapted to the cleaning needs of precision aerospace equipment. Utility Model Content

[0010] The purpose of this invention is to provide a low-impact pulsating cleaning device for aviation equipment. The inlet flow area of ​​the inlet pipe connected to the pump source remains constant. The other end of the inlet pipe is provided with a first outlet and a second outlet. The flow areas of the first outlet and the second outlet can be periodically adjusted so that the sum of the flow areas of the first outlet and the second outlet remains constant, thereby creating a pulsating cleaning effect in the flushed pipeline. Furthermore, the pulsating cleaning flow area and the return oil tank flow area always maintain a linear increase and a linear decrease, with the increase and decrease being completely consistent. Regardless of the change in the pulsation at the end, the flow area at the inlet remains constant, and there is no pressure impact at the inlet during the pulsation switching process.

[0011] This utility model is achieved through the following technical solution: A low-impact pulsed cleaning device for aviation equipment includes an inlet pipe, a first flow valve, a second flow valve, and a synchronous drive mechanism. The inlet pipe is provided with an inlet, a first outlet, and a second outlet. The first flow valve is connected to the first outlet, and the second flow valve is connected to the second outlet. The synchronous drive mechanism is located above the first and second flow valves and is used to control the opening and closing of the first and second flow valves. The first flow valve includes a first valve body, in which a first valve core is disposed. The second flow valve includes a second valve body, in which a second valve core is disposed. Both the first and second valve cores are spherical structures and have the same structure. The first and second valve bodies have the same structure. Both the first and second valve cores have flow channels. Both the first and second valve bodies have corresponding through-flow holes. The synchronous drive mechanism is used to drive the first and second valve cores to rotate synchronously. When the first or second valve core is opened to any angle, the sum of their flow areas remains constant.

[0012] Preferably, the installation angle of the first valve core in the first valve body differs from the installation angle of the second valve core in the second valve body by 90°; both the first and second valve bodies are provided with sealing elements at the front and rear flow holes; when the flow channel of the first valve core is fully exposed at the flow hole of the first valve body, the flow channel of the second valve core is sealed by the sealing element and side wall of the second valve body.

[0013] Preferably, the flow hole has a rectangular structure, the flow channel cross-section of the first valve core and the second valve core has an equilateral triangular structure, the height of the flow hole is the same as the side length of the flow channel cross-section, and the width of the flow hole is the same as the length of the perpendicular bisector of the flow channel cross-section.

[0014] Preferably, both the first valve body and the second valve body have protruding insertion portions, and each of the two insertion portions is provided with a socket. The synchronous drive mechanism includes an active drive component and a follower drive component. The active drive component is disposed on the insertion portion of the first valve body and connected to the first valve core through the socket. The follower drive component is disposed on the insertion portion of the second valve body and connected to the second valve core through the socket. The active drive component and the follower drive component are connected by a synchronous belt.

[0015] Preferably, the active drive component includes a servo geared motor, an output wheel, a support frame, a first output shaft, and a first fixing member. The support frame is a rectangular structure and is disposed on the insertion part of the first valve body. A set of clearance holes are coaxially disposed on the upper and lower end faces of the support frame. The side of the support frame facing the second valve body has a hollow structure. The servo geared motor is disposed on the upper end face of the support frame. The output wheel is disposed in the support frame. The first output shaft is connected to the servo geared motor and passes through the output wheel to connect to the first valve core. The first valve core is provided with a first slot, which is inserted and engaged with the end of the first output shaft, limiting the end of the first output shaft. The fixing member is disposed inside the support frame and located at the clearance hole position at the lower end of the support frame. The first fixing member is connected to the insertion part of the first valve body and is sleeved on the first output shaft, axially limiting the first output shaft. The synchronous belt is sleeved on the output wheel, and the first output shaft limits the output wheel, causing the output wheel to rotate with the first output shaft.

[0016] Preferably, the follower drive assembly includes a follower wheel, a second output shaft, and a second fixing member. The second output shaft passes through the follower wheel and connects to a second valve core. The second valve core is provided with a second slot, which is inserted into the end of the second output shaft, limiting the end of the second output shaft. The second output shaft limits the follower wheel, causing the follower wheel to rotate with the second output shaft. The second fixing member is connected to the insertion part of the second valve body, and is sleeved on the second output shaft, axially limiting the second output shaft. The synchronous belt connects the output wheel and the follower wheel, and the output wheel and the follower wheel have the same diameter.

[0017] Preferably, a protective cover is provided between the insertion part of the first valve body and the support frame, and the protective cover is connected to the side of the support frame.

[0018] Preferably, the first flow valve, the second flow valve, and the first and second outlets of the liquid inlet pipeline are all provided with docking flanges, and the first flow valve and the second flow valve are respectively connected to the liquid inlet pipeline through docking flanges.

[0019] Preferably, mounting flanges are provided at the inlet of the liquid inlet pipeline and at the flow holes at the ends of the first valve body and the second valve body.

[0020] Preferably, a first mounting bracket is provided at the bottom of the liquid inlet pipeline, and a second mounting bracket is provided at the bottom of the first valve body and the second valve body. The second mounting bracket connects the first flow valve and the second flow valve, and the bottom of the first mounting bracket and the bottom of the second mounting bracket are on the same plane.

[0021] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1) In this utility model, the flow area of ​​the inlet port connected to the pump source remains unchanged. The flow areas of the first valve core and the second valve core can be periodically adjusted so that the sum of the flow areas of the first valve core and the second valve core remains constant, thereby creating a pulsating cleaning effect in the flushed pipeline. Furthermore, the pulsating cleaning flow area and the return oil tank flow area always maintain a linear increase and a linear decrease, with the increase and decrease in area being completely consistent. Regardless of the change in the end pulsation, the flow area at the inlet remains constant. During the pulsation switching process, there is no pressure shock at the inlet. There is no need to configure a large flow pump. The outlet diversion mode is adopted, and there is no overflow at the inlet of the cleaning device, resulting in no overflow loss. The oil return adopts a low-pressure return method, which generates little heat and has a significant energy-saving effect. Long-term use can significantly save energy costs.

[0022] 2) In this utility model, the "dual-valve coordinated pulsation" design can achieve low-pressure protection and stable pulsating impact, which is suitable for the precision requirements of aviation equipment. The device achieves pulsating fluid output under low-pressure conditions through the synchronous adjustment of the first flow valve (pulsation valve) and the second flow valve (bypass valve). It can improve the impurity removal efficiency through pulse impact force without relying on a high-pressure pump, and completely avoids the risk of damage to the precision inner wall of aviation equipment by traditional high-pressure cleaning devices. It is especially suitable for cleaning lightweight parts such as aluminum alloy and titanium alloy, as well as precision structures such as thin-walled pipes and valve cores. The synchronous drive mechanism drives the first valve core and the second valve core to rotate synchronously, and the initial installation angle of the two valve cores differs by 90°. When the flow channel of the first valve core is fully exposed, the flow channel of the second valve core is completely closed. During the rotation, the discharge volume of the two valve cores is "complementary", which ensures a smooth transition of pulsating impact pressure without instantaneous pressure rise and fall. This not only ensures the impurity removal effect, but also improves the safety and stability of the cleaning process.

[0023] 3) In this utility model, through precise structural matching, the sum of the flow areas of the first valve core and the second valve core remains constant when they are opened to any angle. This design fundamentally solves the problem of pressure and flow impact at the inlet of traditional pulsation devices. By keeping the flow area of ​​the inlet constant during the cleaning process, the flow pulsation changes at the flow holes at the ends of the first and second valve bodies will not cause pressure and flow impact in the inlet pipe section. Therefore, it can be adapted to the needs of different cleaning stages. The pulsation frequency can be flexibly controlled by adjusting the rotation speed of the valve core without changing the total flow rate. It can meet the needs of coarse cleaning (high frequency pulsation) and fine cleaning (low frequency pulsation) and has stronger versatility.

[0024] 4) In this utility model, a high synchronization drive is adopted. The synchronous drive mechanism consists of an active drive component, a follower drive component and a synchronous belt. The drive wheel and the follower wheel have the same diameter. The synchronous belt drive ensures that the rotation speeds of the first valve core and the second valve core are completely consistent. At the same time, the valve core and the output shaft are limited by a slot to prevent relative sliding between the shaft and the valve core, further ensuring rotational synchronization and ensuring synchronous variable change of the bypass valve and the pulse valve.

[0025] 5) In this invention, polytetrafluoroethylene (PTFE) seals are provided at the front and rear flow holes of both the first and second valve bodies. The seals have a curved surface structure on the side near the valve core, which fits perfectly with the spherical valve core, achieving a "zero-leakage" sealing effect. PTFE material has excellent wear resistance and corrosion resistance, and can withstand the rotational friction of the valve core for a long time, avoiding pressure loss or fluid leakage due to seal failure, extending the service life of the device, and preventing leaked fluid from polluting the equipment or environment.

[0026] 6) In this utility model, the device is equipped with a first mounting bracket to support the inlet pipe and a second mounting bracket to connect and support two flow valves. The bottoms of the two mounting brackets are on the same plane, ensuring that the inlet pipe, flow valves, and other components do not vibrate significantly under the impact of pulsating fluid, reducing component wear and improving the overall structural stability. Simultaneously, the mounting brackets are compatible with various work platforms and can be directly fixed to the cleaning station or mobile support to meet the needs of different scenarios. Furthermore, the inlet of the inlet pipe and the end flow holes of the two flow valves are equipped with mounting flanges, and the inlet pipe and flow valves are connected via a butt joint. Flange connection not only improves sealing reliability but also allows for quick adaptation to interfaces of different types of aviation equipment, such as engine pipelines and hydraulic system interfaces, without additional modifications, significantly enhancing the device's versatility. In addition, the valve body adopts a split structure, with the middle section connected and fixed by bolts, facilitating the disassembly and replacement of vulnerable components such as the valve core and seals, reducing maintenance costs and difficulties. This allows the device to be used as a finished product on newly developed equipment or added to the outlet position of existing traditional cleaning devices, conveniently enabling the modification of existing cleaning devices to reduce inlet pressure impact. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the assembly structure of the pulsating cleaning device in this utility model.

[0029] Figure 2This is a schematic diagram of the internal structure of the first valve body and the second valve body in this utility model.

[0030] Figure 3 This is a schematic diagram of the first valve core structure in this utility model.

[0031] Figure 4 This is a schematic diagram of the synchronous drive mechanism in this utility model.

[0032] Figure 5 This is a schematic diagram of the support frame structure in this utility model.

[0033] Figure 6 This is a schematic diagram of the active drive component and the follow-up drive component in this utility model.

[0034] Figure 7 This is a sinusoidal curve showing the change in the flow area of ​​the first and second valve cores in this utility model.

[0035] Figure 8 This is a square wave curve showing the change in the flow area of ​​the first and second valve cores in this utility model.

[0036] Figure 9 This is a sawtooth wave curve showing the change in the flow area of ​​the first and second valve cores in this utility model.

[0037] Wherein: 1-Inlet pipe, 2-First valve body, 21-First valve core, 211-First slot, 3-Second valve core, 311-Second slot, 4-Seal, 5-Active drive assembly, 51-Servo geared motor, 52-Support frame, 53-Output wheel, 54-First output shaft, 55-First fixing component, 6-Follow-up drive assembly, 61-Follow-up wheel, 62-Second output shaft, 63-Second fixing component, 7-Synchronous belt, 8-Protective cover, 9-First mounting bracket, 10-Second mounting bracket. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0039] Example 1: A low-impact pulsed cleaning device for aircraft inlets, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the device includes an inlet pipe 1, a first flow valve, a second flow valve, and a synchronous drive mechanism. The inlet pipe 1 is provided with an inlet, a first outlet, and a second outlet. The inlet is located in the middle of the inlet pipe 1, and the first outlet and the second outlet are respectively located at both ends of the inlet pipe 1. The inlet is connected to the pump source of the cleaning equipment and is used to introduce the pressure and flow rate flushing medium of the cleaning equipment into the pulse cleaning device to generate pulse pressure for the downstream aviation equipment pipeline. The first flow valve is connected to the first outlet, and the second flow valve is connected to the second outlet. The synchronous drive mechanism is located above the first flow valve and the second flow valve and is used to control the opening and closing of the first flow valve and the second flow valve. The first flow valve includes a first valve body 2, in which a first valve core 21 is disposed. The second flow valve includes a second valve body, in which a second valve core 3 is disposed. Both the first valve core 21 and the second valve core 3 are spherical structures and have the same structure. The first valve body 2 and the second valve body have the same structure. Both the first valve body 2 and the second valve body are split structures. The middle parts of the first valve body 2 and the second valve body are joined together and fixed by bolts. Both the first valve core 21 and the second valve core 3 are provided with flow channels. Both the first valve body 2 and the second valve body are provided with corresponding through flow holes. The synchronous drive mechanism is used to drive the first valve core 21 and the second valve core 3 to rotate synchronously. When the first valve core 21 or the second valve core 3 is opened to any angle, the sum of their flow areas remains constant. The installation angle of the first valve core 21 in the first valve body 2 differs from the installation angle of the second valve core 3 in the second valve body by 90°. When the flow channel of the first valve core 21 is fully exposed at the flow hole of the first valve body 2, the flow channel of the second valve core 3 is completely sealed by the sealing element 4 and the side wall of the second valve body. In this embodiment, both the first flow valve and the second flow valve can be used as main valves, i.e., pulsating flow valves. In this embodiment, the first flow valve is used as a pulsating flow valve and is connected to the pipeline to be flushed. Through the pulsating effect, the pipeline is cleaned quickly. The second flow valve is used as a bypass flow valve and is connected to the oil tank port of the cleaning equipment to return the excess oil output by the pump source to the equipment oil tank.

[0040] The flow areas of the first valve core 21 and the second valve core 3 can be periodically adjusted to ensure that the sum of the flow areas of the first valve core 21 and the second valve core 3 remains constant, thereby creating a pulsating cleaning effect in the flushed pipeline. Furthermore, the pulsating cleaning flow area and the return oil tank flow area maintain a linear increase while the other linearly decreases, with the increase and decrease being completely consistent. Regardless of changes in the pulsation at the end, the flow area at the inlet remains constant, and there is no pressure surge at the inlet during pulsation switching. No large-flow pump is required; the outlet diversion mode eliminates overflow at the cleaning device inlet, resulting in no overflow loss. The oil return uses a low-pressure return method, generating minimal heat and achieving significant energy savings over long-term use.

[0041] The discharge volume of the first valve core 21 and the second valve core 3 during rotation is "complementary," ensuring a smooth transition of pulsating impact pressure without sudden pressure rises or falls. This not only guarantees the impurity removal effect but also improves the safety and stability of the cleaning process.

[0042] like Figure 2 As shown, both the first valve body 2 and the second valve body are provided with sealing elements 4 at the positions of the front and rear flow holes. The first valve core 21 and the second valve core 3 abut against the sealing elements 4. The sealing element 4 is set with a curved structure on the side near the first valve core 21 and the second valve core 3 so that it can fit against the first valve core 21 or the second valve core 3, ensuring the sealing performance of the first flow valve and the second flow valve. The sealing element 4 is made of polytetrafluoroethylene (PTFE). PTFE has excellent wear resistance and corrosion resistance, and can withstand the rotational friction of the valve core for a long time, avoiding pressure loss or fluid leakage due to seal failure, extending the service life of the device, and preventing leaked fluid from polluting the equipment or the environment.

[0043] By keeping the flow area of ​​the inlet constant during the cleaning process, the flow pulsation changes of the first valve body 2 and the flow holes at the end of the second valve body will not cause pressure and flow shocks in the inlet pipe section; therefore, it can adapt to the needs of different cleaning stages, and the pulsation frequency can be flexibly controlled by adjusting the rotation speed of the valve core without changing the total flow rate, thus taking into account both high-frequency pulsation and low-frequency pulsation needs.

[0044] The flow hole has a rectangular structure, and the flow channel cross-sections of the first valve core 21 and the second valve core 3 have an equilateral triangular structure. The first valve core 21 and the second valve core 3 can rotate horizontally in the first valve body 2 and the second valve body, respectively. The height of the flow hole is the same as the side length of the flow channel cross-section, and the width of the flow hole is the same as the length of the perpendicular bisector of the flow channel cross-section. When the flow channel of the first valve core 21 is fully exposed at the flow hole of the first valve body 2, the left end point of its flow channel corresponds to the left side wall of the flow hole of the first valve body 2, and the right side wall of its flow channel corresponds to the right side wall of the flow hole of the first valve body 2. At this time, the flow channel of the first valve core 21 is fully exposed under the flow hole of the first valve body 2, and the pulsating flow rate of the first valve core 21 reaches its maximum value. At this time, the flow channel of the second valve core 3 is completely closed by the side wall of the second valve body. When the first valve core 21 rotates clockwise, the outlet area of ​​the flow channel of the first valve core 21 decreases, and the flow channel of the corresponding second valve core 3 is exposed at the position of the flow hole of the second valve body and gradually increases. The first valve core 21 and the second valve core 3 rotate synchronously, which can adjust the pulsating flow area of ​​the pulsating flow valve and keep the sum of the flow areas of the two constant. This can protect the pipeline and components of the pulsating cleaning inlet section from pressure and flow shocks, avoid abnormal vibration or noise, and the system has no overflow loss, which can achieve efficient use of energy.

[0045] The first flow valve, the second flow valve, and the first and second outlets of the inlet pipeline 1 are all equipped with connecting flanges. The first and second flow valves are connected to the inlet pipeline 1 via connecting flanges and secured with bolts. Mounting flanges are also provided at the inlet of the inlet pipeline 1 and at the flow holes at the ends of the first and second valve bodies. The inlet pipeline 1 is connected to the pump source of the cleaning equipment via its inlet mounting flange. The pulsating flow valve is connected to the pipeline being flushed via its mounting flange, rapidly cleaning the pipeline through the pulsating effect. The bypass flow valve is connected to the oil tank port of the cleaning equipment via its mounting flange, returning excess oil output from the pump source to the equipment's oil tank.

[0046] like Figure 1 As shown, a first mounting bracket 9 is provided at the bottom of the inlet pipe 1, and a second mounting bracket 10 is provided at the bottom of the first valve body 2 and the second valve body. The second mounting bracket 10 connects the first flow valve and the second flow valve. The bottom of the first mounting bracket 9 and the bottom of the second mounting bracket 10 are on the same plane. The inlet pipe 1, the first valve body 2, and the second valve body are all fixed to the equipment mounting platform or external mounting bracket by the two mounting brackets to meet the needs of different scenarios. The bottoms of the two mounting brackets are on the same plane, ensuring that the inlet pipe 1, flow valves, and other components do not vibrate significantly under the impact of pulsating fluid, reducing component wear and improving the overall structural stability.

[0047] like Figure 7 , Figure 8 and Figure 9 As shown, the curves of the flow area and rotation angle of the first valve core 21 and the second valve core 3 show that their discharge volume exhibits a "complementary change". By adjusting the rotation angle and rotation speed of the first valve core 21 and the second valve core 3, various cleaning waveforms such as sine wave, sawtooth wave, and square wave can be adjusted. Figure 7 It is a sine wave curve. Figure 8 It is a square wave curve. Figure 9 The curve is a sawtooth wave.

[0048] Example 2: This embodiment, based on the above embodiments, further defines the synchronous drive mechanism, such as... Figure 4 , Figure 5 and Figure 6 As shown, both the first valve body 2 and the second valve body have protruding insertion parts. The top of the insertion part is a flat structure, and the insertion part is provided with a socket. The synchronous drive mechanism includes an active drive component 5 and a follower drive component 6. The active drive component 5 is disposed on the insertion part of the first valve body 2 and connected to the first valve core 21 through the socket. The follower drive component 6 is disposed on the insertion part of the second valve body and connected to the second valve core 3 through the socket. The active drive component 5 and the follower drive component 6 are connected by a synchronous belt 7. The active drive component 5 can drive the follower drive component 6 to rotate synchronously, thereby causing the first valve core 21 and the second valve core 3 to rotate synchronously.

[0049] The active drive assembly 5 includes a servo geared motor 51, an output wheel 53, a support frame 52, a first output shaft 54, and a first fixing member 55. The support frame 52 has a rectangular structure and is mounted on the insertion part of the first valve body 2 and connected to the insertion part by bolts. A set of clearance holes are coaxially provided on the upper and lower end faces of the support frame 52. The side of the support frame 52 facing the first valve body 2 has a hollow structure, which allows the synchronous belt 7 to extend and connect with the follow-up drive assembly 6. The servo geared motor 51 is mounted on the upper end face of the support frame 52. The servo geared motor is used to reduce the operating speed of the first valve core 21 and the second valve core 3 and increase the driving torque of the first valve core 21 and the second valve core 3. Output wheel 53 is disposed in support frame 52. First output shaft 54 ​​is connected to servo geared motor 51. After passing through output wheel 53, first output shaft 54 ​​is connected to first valve core 21. First valve core 21 is provided with first slot 211, which is a rectangular curved groove structure. First slot 211 is inserted into the end of first output shaft 54. First slot 211 limits the end of first output shaft 54. Rotation of first output shaft 54 ​​can drive first valve core 21 to rotate horizontally in first valve body 2. Fixing member is disposed inside support frame 52 and located at the lower end of support frame 52 at the clearance hole position. First fixing member 55 is connected to the insertion part of first valve body 2 by bolts. The bottom edges of both ends of fixing member can make clearance against the bottom of support frame 52. First fixing member 55 is sleeved on first output wheel 53. The first output shaft 54 ​​is provided with a stepped structure. The first fixing member 55 cooperates with the first output shaft 54 ​​to position it and ensure that it does not shake during rotation. The synchronous belt 7 is sleeved on the output wheel 53. The first output shaft 54 ​​is provided with first annular grooves at the upper and lower ends of the output wheel 53, and first elastic retaining rings are respectively provided in the upper and lower first annular grooves. The two first elastic retaining rings are sleeved on the first output shaft 54 ​​to limit the axial movement of the output wheel 53. The output wheel 53 is provided with positioning screw holes on its side. After determining the position of the first valve core 21, the relationship between the output wheel 53 and the synchronous belt 7 is adjusted. By screwing the positioning set screw into the side of the output wheel 53, the output wheel 53 is fixed on the first output shaft 54, so that the output wheel 53 rotates with the first output shaft 54.

[0050] The follower drive assembly 6 includes a follower wheel 61, a second output shaft 62, and a second fixing member 63. The output wheel 63 has the same diameter as the follower wheel 61. The second output shaft 62 passes through the follower wheel 61 and connects to the second valve core 3. The second valve core 3 is provided with a second slot 311, which is the same as the first slot 211, also having a rectangular curved groove structure. The second slot 311 is inserted into the end of the second output shaft 62, limiting the end of the second output shaft 62. The second output shaft 62 limits the follower wheel 61, causing the follower wheel 61 to rotate with the second output shaft 62. Two second annular grooves are provided, and two second elastic retaining rings are respectively provided in the two second annular grooves. The two second elastic retaining rings limit the axis of the follower wheel 61. The side of the follower wheel 61 is also provided with positioning screw holes. Its connection with the second output shaft 62 is the same as the connection direction between the first output shaft 54 ​​and the output wheel 53, which will not be described again here. The second fixing member 63 is connected to the insertion part of the second valve body by bolts. The second fixing member 63 is sleeved on the second output shaft 62 and limits the second output shaft 62 axially to ensure that the second output shaft 62 can rotate smoothly. The synchronous belt 7 connects the output wheel 53 and the follower wheel 61. A protective cover 8 is provided between the insertion part of the first valve body 2 and the support frame 52. The protective cover 8 is connected to the side of the support frame 52. The protective cover 8 is used to isolate rotating parts such as the synchronous belt 7 to prevent mechanical injury. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again here.

[0051] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0053] In the description of this utility model, it should also 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 utility model based on the specific circumstances.

[0054] 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. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A low-impact pulsed cleaning device for aviation equipment inlets, characterized in that, The device includes an inlet pipeline, a first flow valve, a second flow valve, and a synchronous drive mechanism. The inlet pipeline is provided with an inlet, a first outlet, and a second outlet. The first flow valve is connected to the first outlet, and the second flow valve is connected to the second outlet. The synchronous drive mechanism is located above the first and second flow valves and is used to control the opening and closing of the first and second flow valves. The first flow valve includes a first valve body, in which a first valve core is disposed. The second flow valve includes a second valve body, in which a second valve core is disposed. Both the first and second valve cores are spherical structures and have the same structure. The first and second valve bodies have the same structure. Both the first and second valve cores have flow channels. Both the first and second valve bodies have corresponding through-flow holes. The synchronous drive mechanism is used to drive the first and second valve cores to rotate synchronously. When the first or second valve core is opened to any angle, the sum of their flow areas remains constant.

2. The inlet low-impact pulsating cleaning device for aviation equipment as described in claim 1, characterized in that, The installation angle of the first valve core in the first valve body differs from that of the second valve core in the second valve body by 90°; both the first and second valve bodies are provided with sealing elements at the front and rear flow holes; when the flow channel of the first valve core is fully exposed at the flow hole of the first valve body, the flow channel of the second valve core is sealed by the sealing element and side wall of the second valve body.

3. The low-impact pulsating cleaning device for aviation equipment as described in claim 2, characterized in that, The flow hole has a rectangular structure, and the flow channel cross-section of the first valve core and the second valve core has an equilateral triangular structure. The height of the flow hole is the same as the side length of the flow channel cross-section, and the width of the flow hole is the same as the length of the perpendicular bisector of the flow channel cross-section.

4. The low-impact pulsating cleaning device for aviation equipment inlet as described in claim 2, characterized in that, Both the first valve body and the second valve body have protruding insertion portions, and each of the two insertion portions is provided with a socket. The synchronous drive mechanism includes an active drive component and a follower drive component. The active drive component is disposed on the insertion portion of the first valve body and connected to the first valve core through the socket. The follower drive component is disposed on the insertion portion of the second valve body and connected to the second valve core through the socket. The active drive component and the follower drive component are connected by a synchronous belt.

5. The low-impact pulsating cleaning device for aviation equipment as described in claim 4, characterized in that, The active drive assembly includes a servo geared motor, an output wheel, a support frame, a first output shaft, and a first fixing member. The support frame is a rectangular structure and is mounted on the insertion part of the first valve body. A set of clearance holes are coaxially arranged on the upper and lower end faces of the support frame. The side of the support frame facing the second valve body has a hollow structure. The servo geared motor is mounted on the upper end face of the support frame. The output wheel is mounted within the support frame. The first output shaft is connected to the servo geared motor, passes through the output wheel, and connects to the first valve core. The first valve core has a first slot that engages with the end of the first output shaft, limiting the position of the end of the first output shaft. The fixing member is located inside the support frame at the clearance hole position at the lower end of the support frame. The first fixing member is connected to the insertion part of the first valve body and is sleeved on the first output shaft, axially limiting its movement. The synchronous belt is sleeved on the output wheel. The first output shaft limits the output wheel, causing it to rotate with the first output shaft.

6. The inlet low-impact pulsating cleaning device for aviation equipment as described in claim 5, characterized in that, The follower drive assembly includes a follower wheel, a second output shaft, and a second fixing member. The second output shaft passes through the follower wheel and connects to a second valve core. The second valve core has a second slot, which is inserted into the end of the second output shaft, limiting the end of the second output shaft. The second output shaft limits the follower wheel, causing it to rotate with the second output shaft. The second fixing member is connected to the insertion part of the second valve body and is sleeved on the second output shaft, axially limiting it. The synchronous belt connects the output wheel and the follower wheel, and the output wheel and the follower wheel have the same diameter.

7. The inlet low-impact pulsating cleaning device for aviation equipment as described in claim 6, characterized in that, A protective cover is provided between the insertion part of the first valve body and the support frame, and the protective cover is connected to the side of the support frame.

8. The inlet low-impact pulsating cleaning device for aviation equipment as described in claim 1, characterized in that, The first flow valve, the second flow valve, and the first and second outlets of the liquid inlet pipeline are all equipped with docking flanges, and the first flow valve and the second flow valve are respectively connected to the liquid inlet pipeline through docking flanges.

9. The inlet low-impact pulsating cleaning device for aviation equipment as described in claim 1, characterized in that, Mounting flanges are provided at the inlet of the liquid inlet pipeline and at the flow holes at the ends of the first and second valve bodies.

10. The inlet low-impact pulsating cleaning device for aviation equipment as described in claim 1, characterized in that, A first mounting bracket is provided at the bottom of the liquid inlet pipeline, and a second mounting bracket is provided at the bottom of the first valve body and the second valve body. The second mounting bracket connects the first flow valve and the second flow valve, and the bottom of the first mounting bracket and the bottom of the second mounting bracket are on the same plane.

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