Dual-purpose water and air cleaning pump

Abstract

This invention relates to the field of cleaning pump technology and discloses a water-air dual-purpose cleaning pump, comprising a liquid pumping component, a gas pumping component, a drive motor, a progressive loading mechanism, and an energy storage triggering component. One end of the drive motor drives the impeller for liquid pumping, while the other end drives the variable displacement pump air component through the progressive loading mechanism. The energy storage triggering component is connected to the liquid outlet channel via an inlet branch. When the liquid outlet channel is closed or the liquid back pressure increases, liquid enters the energy storage triggering component and pushes the lifting drive sleeve to move, causing the driven magnetic swashplate to gradually approach the tilting magnetic drive plate, thereby gradually increasing the pumping amplitude of the variable displacement pump air component, ultimately realizing the output airflow of the gas pumping component. This invention enables the air pump load to be progressively connected to the drive motor, reducing the starting load and balancing initial and continuous purging; simultaneously, it can guide residual cleaning liquid in the impeller area inside the pump casing into the storage chamber, reducing the risk of impeller freezing and jamming, and motor stall damage.

Description

Technical Field

[0001] This invention relates to the field of cleaning pump technology, and in particular to a water-air dual-purpose cleaning pump. Background Technology

[0002] With the development of automotive intelligence and autonomous driving technologies, vehicle-mounted sensors such as cameras, LiDAR, and millimeter-wave radar are widely used in environmental perception systems. During vehicle operation, these sensors are susceptible to contaminants such as rainwater, mud, dust, snow, frost, and insect residue, which can affect image clarity, detection accuracy, and recognition reliability. To ensure the normal operation of these sensors, specialized cleaning devices are typically required to rinse the sensor surfaces with liquid and purge them with gas.

[0003] Most existing vehicle-mounted cleaning devices employ a single liquid spray structure, where a liquid pump delivers cleaning fluid to a nozzle to rinse the sensor surface. While this structure can remove some adhering dirt, a liquid film or droplets often remain on the sensor surface after spraying. Especially in low-temperature environments, the residual liquid may further freeze, affecting the sensor's subsequent normal operation. Therefore, existing technologies also include solutions that combine liquid spraying with air purging. This involves using an air pump to output airflow after spraying water to purge the sensor surface, removing residual droplets and accelerating surface drying.

[0004] In existing technologies, there are generally two methods to achieve liquid spraying and gas purging: one method involves setting up separate liquid and gas pumps, driven by different power sources or control systems; the other method uses the same drive motor to drive both the liquid and gas pumps separately. While the former method offers relatively independent functions, it suffers from complex structures, numerous components, large installation space requirements, and high costs, making it unsuitable for integration within the confined space of a vehicle. Although the latter method can reduce the number of drive units to some extent, if the liquid and gas pumps are simultaneously or nearly simultaneously loaded onto the same drive motor during initial operation, it can easily lead to high starting loads, high instantaneous power consumption, increased operating noise, and accelerated mechanical wear, which is particularly detrimental to the stable operation of miniaturized vehicle-mounted cleaning pumps.

[0005] Furthermore, in actual cleaning processes, the required purging intensity and duration vary depending on the operating conditions. In some cases, liquid spraying alone is sufficient to meet cleaning requirements; in others, a short purging after spraying is enough to remove residual liquid; while in heavily contaminated or low-temperature environments, prolonged continuous purging may be necessary. If the gas pumping unit engages at full load when the liquid pumping unit starts, it can easily lead to over-purging, energy waste, and unnecessary wear under mild cleaning conditions. Using only simple on / off or delayed control methods makes it difficult to ensure a smooth transition between initial and continuous purging requirements.

[0006] There is still a need in the existing technology to provide a water-air dual-purpose cleaning pump that can achieve the coordinated operation of liquid spraying and gas purging, and allows the gas pump load to be gradually connected to the drive motor. Summary of the Invention

[0007] The purpose of this invention is to solve the problems in the prior art where water-air dual-purpose cleaning pumps, when fully engaged under full load, are prone to over-purging, energy waste, and unnecessary wear during light cleaning operations. Therefore, this invention proposes a water-air dual-purpose cleaning pump.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a water-air dual-purpose cleaning pump, comprising: a liquid pumping assembly including a pump housing, an inlet and an outlet channel disposed on the pump housing, and an impeller rotatably disposed within the pump housing; a gas pumping assembly including a pump body, an inlet chamber and an outlet chamber formed within the pump body, an inlet check valve disposed at the inlet chamber, an outlet check valve disposed at the outlet chamber, an inlet port communicating with the inlet chamber, an outlet port communicating with the outlet chamber, and a variable-volume pumping component communicating with the inlet chamber and the outlet chamber and used to change their volumes; a drive motor, fixedly installed between the pump housing and the pump body, the first output shaft of the drive motor being drivenly connected to the impeller, and the second output shaft of the drive motor driving the variable-volume pumping component through a progressive loading mechanism; the progressive loading mechanism including a guide sleeve that slides axially. A lifting drive sleeve is disposed within the guide sleeve; a return spring is used to drive the lifting drive sleeve to reset; a tilting magnetic drive disk is fixedly connected to the second output shaft of the drive motor; and a driven magnetic swing disk is disposed on the lifting drive sleeve. The driven magnetic swing disk is connected to the variable volume pump gas component via a transmission link. An energy storage trigger assembly is disposed within the lifting drive sleeve and is connected to the liquid outlet channel via a liquid inlet branch. When the liquid outlet channel is closed or the liquid outlet back pressure increases, liquid enters the energy storage trigger assembly through the liquid inlet branch and drives the lifting drive sleeve to move toward the tilting magnetic drive disk, so that the driven magnetic swing disk gradually approaches the tilting magnetic drive disk, thereby gradually increasing the swing amplitude of the driven magnetic swing disk driven by magnetic force, and driving the pumping amplitude of the variable volume pump gas component to gradually increase through the transmission link, thereby causing the gas pumping assembly to output airflow.

[0009] Preferably, the energy storage triggering component includes an elastic pressure bladder and a liquid-gas separation membrane disposed within the elastic pressure bladder. The lower end of the elastic pressure bladder is fixedly connected to the inner wall of the guide sleeve, and the upper end of the elastic pressure bladder is fixedly connected to the inner wall of the lifting drive sleeve. The guide sleeve is fixedly installed on the upper side of the variable displacement pump gas component.

[0010] Preferably, the liquid-gas separator divides the interior of the elastic pressure bladder into a liquid storage chamber and a gas storage chamber. The liquid storage chamber is connected to the liquid outlet channel through the liquid inlet branch. The liquid storage chamber is also connected to the liquid outlet branch, which is equipped with a one-way liquid outlet valve. The gas storage chamber is connected to the gas outlet chamber.

[0011] Preferably, the liquid storage chamber is configured to push the liquid-gas separator membrane toward the gas storage chamber after the cleaning fluid is introduced through the liquid inlet branch, and to drive the lifting drive sleeve to move through the elastic pressure bladder; the liquid outlet branch is configured to discharge the liquid in the liquid storage chamber when the lifting drive sleeve is reset.

[0012] Preferably, the pump body is provided with an air inlet communicating with the air inlet chamber and an air outlet communicating with the air outlet chamber. The liquid inlet is provided with a supplementary air bypass valve communicating with the outside, and the air outlet is equipped with a first solenoid valve. After the drive motor stops, when the first solenoid valve is closed, the pressure of the compressed gas retained in the air storage chamber acts on the liquid-gas separator membrane to cause the liquid in the liquid storage chamber to flow back to the cleaning liquid tank through the drain branch. When the first solenoid valve is opened, the air storage chamber is depressurized, and air is supplemented into the pump housing cavity through the supplementary air bypass valve so that the residual cleaning liquid in the impeller area of ​​the pump housing is introduced into the liquid storage chamber.

[0013] Preferably, a second solenoid valve is provided on the liquid inlet and a third solenoid valve is provided on the liquid outlet channel to control the entry of the cleaning fluid into the liquid pumping assembly and the output of the cleaning fluid through the liquid outlet channel.

[0014] Preferably, the variable displacement pump air component is a rubber air sleeve, one end of the transmission connecting rod is rotatably connected to the driven magnetic swashplate, and the other end is connected to the upper surface of the rubber air sleeve, so as to change the volume of the air inlet chamber and the air outlet chamber by the reciprocating deformation of the rubber air sleeve.

[0015] Preferably, the top end of the lifting drive sleeve is a spherical structure, the driven magnetic swivel is rotatably sleeved on the surface of the spherical structure, the inclined magnetic drive disk and the driven magnetic swivel are driven by non-contact magnetic repulsion, and the swing amplitude of the driven magnetic swivel gradually increases as it approaches the inclined magnetic drive disk.

[0016] The present invention has the following beneficial effects: 1. This invention, by setting up an energy storage triggering component and a progressive loading mechanism, ensures that in the initial stage of operation of the liquid pumping component, the output of the drive motor is preferentially used to drive the impeller to deliver cleaning fluid, rather than synchronously driving the gas pumping component with a larger load. As the hydraulic pressure in the energy storage triggering component gradually increases, the lifting drive sleeve gradually moves, and the magnetic repulsion between the driven magnetic swashplate and the tilting magnetic drive plate gradually strengthens, thereby gradually increasing the pumping amplitude of the variable displacement pump air component. This achieves a progressive connection of the air pump load to the drive motor, avoiding the problems of high starting resistance and high instantaneous power consumption caused by the synchronous rigid loading of water pumps and air pumps in the prior art.

[0017] 2. In this invention, the energy storage triggering component can first form a pressure storage effect after the liquid enters, and can provide the compressed gas required for simple purging or initial purging in the early stage; as the energy storage triggering component is continuously pressurized, the progressive loading mechanism further operates, and the driving amplitude of the variable displacement pump gradually increases, thereby realizing the gradual transition from initial purging to continuous purging, adapting to different cleaning conditions such as water spraying only, short-term purging after water spraying, and long-term purging.

[0018] 3. In this invention, during the water spraying stage, since the liquid outlet channel remains open, it is difficult to build up sufficient pressure within the energy storage trigger component to significantly move the lifting drive sleeve. Therefore, the gas pumping component is in a non-working state or a low-amplitude working state, and will not significantly increase the additional compressed air load on the drive motor during the water spraying process. After the water spraying ends, the liquid outlet channel closes or the liquid back pressure increases, and the energy storage trigger component is pressurized to move the lifting drive sleeve. Only then does the output capacity of the gas pumping component gradually increase, so that the drive motor is mainly used for liquid pumping during the water spraying process, and then gradually builds up significant purging capacity. The required air pump output is gradually built up according to the working state of the liquid pumping component and the pressure state of the energy storage trigger component, avoiding energy waste caused by premature and excessive intervention of the air pump under light cleaning conditions, and reducing the additional load on the drive motor during the water spraying stage.

[0019] 4. By setting up a liquid storage chamber, a drain branch, a one-way drain valve, a first solenoid valve, and a gas replenishment bypass valve, this invention allows the liquid in the storage chamber to flow back to the cleaning fluid tank after the drive motor stops, using the pressure of the compressed gas retained in the storage chamber. When further treatment of residual cleaning fluid in the pump casing is required, the first solenoid valve can be opened and the gas replenishment bypass valve can be used to replenish gas, allowing the residual cleaning fluid in the pump casing, especially in the impeller area, to be gradually introduced into the storage chamber and flow back to the cleaning fluid tank through the drain branch. This reduces the risk of impeller jamming and motor stalling caused by the freezing of residual liquid in the impeller area, and reduces cleaning fluid waste while achieving antifreeze drainage. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the cleaning pump proposed in this invention.

[0021] Figure 2 This is an exploded structural diagram of the cleaning pump proposed in this invention.

[0022] Figure 3 This is a schematic diagram of the exploded structure of the pump body proposed in this invention.

[0023] Figure 4 This is a schematic diagram of the progressive loading mechanism proposed in this invention.

[0024] Figure 5 This is a schematic diagram of the orthographic structure of the guide sleeve proposed in this invention.

[0025] Figure 6 This is a schematic diagram of the front section structure of the pump body proposed in this invention.

[0026] Figure 7 This is a schematic diagram of the front section structure of the cleaning pump proposed in this invention.

[0027] Figure 8 This is a schematic cross-sectional view of the elastic pressure reservoir proposed in this invention. Figure 1 .

[0028] Figure 9 This is a schematic cross-sectional view of the elastic pressure reservoir proposed in this invention. Figure 2 .

[0029] Figure 10 This is a schematic cross-sectional view of the elastic pressure reservoir proposed in this invention. Figure 3 .

[0030] In the picture: 101. Pump casing; 102. Liquid inlet; 103. Liquid outlet; 104. Impeller; 201. Pump body; 202. Inlet chamber; 203. Outlet chamber; 204. Inlet check valve; 205. Outlet check valve; 206. Inlet port; 207. Outlet port; 208. Variable displacement pump components; 209. Make-up bypass valve; 300. Drive motor; 401. Guide sleeve; 402. Lifting drive sleeve; 403. Return spring; 404. Tilting magnetic drive disk; 405. Driven magnetic swing disk; 406. Transmission link; 407. Liquid inlet branch; 409. Liquid outlet branch; 410. One-way drain valve; 501. Elastic pressure reservoir; 502. Liquid-gas separation membrane; 503. Liquid storage chamber; 504. Gas storage chamber; 601, First solenoid valve; 602, Second solenoid valve; 603, Third solenoid valve. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not 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 invention. Example

[0033] like Figures 1-7 As shown, this embodiment provides a water-air dual-purpose cleaning pump, including a liquid pumping component, a gas pumping component, a drive motor 300, a progressive loading mechanism, and an energy storage triggering component.

[0034] refer to Figure 2The liquid pumping assembly includes a pump housing 101, an inlet 102 and an outlet channel 103 disposed on the pump housing 101, and an impeller 104 rotatably disposed within the pump housing 101. The first output shaft of the drive motor 300 is connected to the impeller 104 for driving the impeller 104 to rotate in order to pump the cleaning fluid.

[0035] refer to Figure 2 , Figure 3 The gas pumping assembly includes a pump body 201, an inlet chamber 202 and an outlet chamber 203 formed within the pump body 201, an inlet check valve 204 disposed in the inlet chamber 202, an outlet check valve 205 disposed in the outlet chamber 203, an inlet port 206 communicating with the inlet chamber 202, an outlet port 207 communicating with the outlet chamber 203, and a variable-volume pump component 208 that connects the inlet chamber 202 and the outlet chamber 203 and is used to change their volumes. A drive motor 300 is fixedly installed between the pump housing 101 and the pump body 201. The second output shaft of the drive motor 300 drives the variable-volume pump component 208 through a progressive loading mechanism. The drive motor 300 is preferably a dual-output-shaft DC motor.

[0036] refer to Figure 4 , Figure 5 , Figure 6 The progressive loading mechanism includes a guide sleeve 401, a lifting drive sleeve 402 slidably disposed within the guide sleeve 401 along the axial direction, a reset spring 403 for resetting the lifting drive sleeve 402, an inclined magnetic drive disk 404 fixedly connected to the second output shaft of the drive motor 300, and a driven magnetic oscillating disk 405 disposed on the lifting drive sleeve 402. The driven magnetic oscillating disk 405 is connected to the variable displacement pump air component 208 via a transmission link 406. An energy storage triggering component is disposed within the lifting drive sleeve 402 and is connected to the liquid outlet channel 103 via a liquid inlet branch 407. The two ends of the liquid inlet branch 407 are fixed to the energy storage triggering component and the liquid outlet channel 103, respectively. The top end of the lifting drive sleeve 402 is a spherical structure, and the driven magnetic oscillating disk 405 is rotatably sleeved on the surface of the spherical structure. The inclined magnetic drive disk 404 and the driven magnetic oscillating disk 405 are driven by non-contact magnetic repulsion.

[0037] In this embodiment, as Figure 4 As shown, the variable volume pump air component 208 is a rubber air sleeve. One end of the transmission connecting rod 406 is rotatably connected to the driven magnetic swashplate 405, and the other end is connected to the upper surface of the rubber air sleeve, so as to change the volume of the air inlet chamber 202 and the air outlet chamber 203 by the reciprocating deformation of the rubber air sleeve.

[0038] like Figure 5As shown, under the action of the return spring 403, the lifting drive sleeve 402 moves away from the tilting magnetic drive disk 404, increasing the distance between the driven magnetic swashplate 405 and the tilting magnetic drive disk 404. At the same time, the return spring 403 applies a compression action to the variable displacement pump air component 208 through the lifting drive sleeve 402, the driven magnetic swashplate 405, and the transmission connecting rod 406, so that the variable displacement pump air component 208 is in a certain degree of pre-compression state. Because the magnetic repulsion between the driven magnetic swashplate 405 and the tilting magnetic drive plate 404 is weak at this time, the swing amplitude of the driven magnetic swashplate 405 is small, and the displacement transmitted to the variable displacement pump component 208 via the transmission link 406 is small. This results in a small effective variable displacement amplitude formed by the variable displacement pump component 208, which in turn results in a small change in the intake and exhaust volume between the intake chamber 202 and the exhaust chamber 203. Therefore, the gas compression resistance and reaction resistance are both small, and no significant additional load is applied to the drive motor 300. The gas pumping component is in a non-working state or a low-amplitude working state.

[0039] like Figure 6 As shown, liquid enters the energy storage trigger assembly through the liquid inlet branch 407 and drives the lifting drive sleeve 402 to move towards the tilting magnetic drive disk 404, reducing the distance between the driven magnetic swashplate 405 and the tilting magnetic drive disk 404. As the distance between them decreases, the magnetic driving force of the driven magnetic swashplate 405 on the tilting magnetic drive disk 404 gradually increases, thereby gradually increasing the swing amplitude of the driven magnetic swashplate 405. This, in turn, drives the variable volume pump component 208 to produce a larger deformation through the transmission link 406, thereby gradually increasing the pumping capacity of the gas pumping assembly.

[0040] In addition, refer to Figure 7 A second solenoid valve 602 is provided on the liquid inlet 102, a third solenoid valve 603 is provided on the liquid outlet 103, and a first solenoid valve 601 is provided at the exhaust port 207. By controlling the opening and closing states of the first solenoid valve 601, the second solenoid valve 602, and the third solenoid valve 603, different working states such as liquid pumping, subsequent purging, and antifreeze drainage can be realized.

[0041] Working principle refer to Figure 7 In operation, when the second solenoid valve 602 and the third solenoid valve 603 are opened, the drive motor 300 starts, the impeller 104 rotates, and the cleaning fluid enters the pump casing 101 through the inlet 102 and is discharged through the outlet channel 103 to achieve water spraying and rinsing of the parts to be cleaned. At this time, the main output of the drive motor 300 is preferentially used for the liquid pumping components.

[0042] During the water spraying phase, since the third solenoid valve 603 remains open, the liquid outlet channel 103 is in a conductive state, and the cleaning fluid output by the liquid pumping component can be discharged normally through the liquid outlet channel 103. At this time, the liquid back pressure in the liquid outlet channel 103 is low, and it is difficult to build up enough pressure in the energy storage triggering component to significantly push the lifting drive sleeve 402 upward. Therefore, the magnetic repulsion between the driven magnetic swashplate 405 and the tilting magnetic drive plate 404 is weak, and the variable displacement pump air component 208 is in a non-working state or a low-amplitude working state. Thus, during the water spraying phase, the output of the drive motor 300 is mainly used to drive the impeller 104 for liquid pumping, without significantly increasing the additional load for compressed air.

[0043] When the third solenoid valve 603 is closed, the water spraying ends, the liquid back pressure in the liquid outlet channel 103 increases, and the liquid enters the energy storage trigger component through the liquid inlet branch 407, driving the lifting drive sleeve 402 to move towards the tilting magnetic drive disk 404. As the lifting drive sleeve 402 moves upward, the driven magnetic sway disk 405 gradually approaches the tilting magnetic drive disk 404, thereby gradually increasing the swing amplitude of the driven magnetic sway disk 405 driven by magnetic force, and through the transmission link 406, gradually increasing the pumping amplitude of the variable volume pump air component 208, ultimately causing the gas pumping component to output airflow; specifically, as shown... Figure 6 As shown, external gas enters the intake chamber 202 through the intake port 206. When the volume of the variable volume pump 208 increases, the gas pushes the intake check valve 204 to open and enters the variable volume pump 208. When the volume of the variable volume pump 208 decreases, the gas is compressed and pushes the exhaust check valve 205 to open, enters the exhaust chamber 203, and is finally discharged through the exhaust port 207.

[0044] Therefore, this embodiment does not simultaneously connect the gas pumping component with a large load at the initial stage of drive motor 300 startup. Instead, the gas pump load is gradually established and increased as the energy storage trigger component is under pressure, thereby achieving a gradual connection of the gas pump load to drive motor 300. This reduces the superimposed load on drive motor 300 at the initial startup stage and allows the gas pump output to vary from weak to strong according to actual operating conditions.

[0045] When exhaust purging is required, the first solenoid valve 601 is opened, and the gas is discharged through the exhaust port 207; when exhaust purging is not required, the first solenoid valve 601 can be closed to control the gas path status. Example

[0046] This embodiment further illustrates the specific structure of the energy storage triggering component based on Embodiment 1.

[0047] In this embodiment, reference Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10The energy storage triggering component includes an elastic pressure bladder 501 and a liquid-gas separator 502 disposed within the elastic pressure bladder 501. The lower end of the elastic pressure bladder 501 is fixedly connected to the inner wall of the guide sleeve 401, and the upper end of the elastic pressure bladder 501 is fixedly connected to the inner wall of the lifting drive sleeve 402. The liquid-gas separator 502 divides the interior of the elastic pressure bladder 501 into a liquid storage chamber 503 and a gas storage chamber 504. The liquid storage chamber 503 is connected to the liquid outlet channel 103 through the liquid inlet branch 407; the liquid storage chamber 503 is also connected to the liquid outlet branch 409, which is equipped with a one-way liquid outlet valve 410. One end of the liquid outlet branch 409 is fixed to the elastic pressure bladder 501, and the other end extends to the outside of the pump body 201; the gas storage chamber 504 is connected to the gas outlet chamber 203. The airflow from the gas outlet chamber 203 enters the gas storage chamber 504 in one direction and enters the exhaust port 207 in the other direction. A first solenoid valve 601 is installed at the exhaust port 207.

[0048] When the liquid pumping assembly operates and the outlet channel 103 is closed or the outlet back pressure increases, some of the cleaning fluid enters the storage chamber 503 through the inlet branch 407, causing the liquid-gas separator 502 to deform towards the gas storage chamber 504 and compressing the gas inside the gas storage chamber 504. Thus, the energy storage triggering assembly first creates a pressure storage effect after the liquid enters; for example... Figure 8 As shown, P0 represents the equivalent restoring force of the return spring 403 acting on the lifting drive sleeve 402, P1 represents the pressure exerted by the liquid in the liquid storage chamber 503 on the liquid-gas separator 502, and P2 represents the reaction pressure of the compressed gas in the gas storage chamber 504 on the liquid-gas separator 502. In the initial pressure storage stage, P1 and P2 gradually increase but are insufficient to overcome P0; as liquid continues to enter the liquid storage chamber 503, the resultant force formed by P1 and P2 gradually increases, and when it overcomes P0, the lifting drive sleeve 402 begins to move upward.

[0049] In the initial stage, as the gas in the gas storage chamber 504 is compressed, the energy storage triggering component can provide a certain initial purging capacity to meet the needs of simple purging or initial purging. At this time, even if the variable displacement pump gas component 208 has not yet entered a large-scale working state, it can still use the compressed gas formed in the gas storage chamber 504 to complete short-term purging or initial purging.

[0050] As the liquid in the reservoir 503 continues to increase and the hydraulic pressure continues to rise, P1 and P2 overcome P0, and the elastic pressure bladder 501 further pushes the lifting drive sleeve 402 upward, thereby gradually strengthening the magnetic repulsion between the driven magnetic swashplate 405 and the tilting magnetic drive plate 404, which in turn gradually increases the pumping amplitude of the variable volume pump 208, entering a continuous purging state.

[0051] Therefore, this embodiment, through the setting of liquid storage chamber 503 and gas storage chamber 504, realizes the working mode of first storing pressure and initial purging in the early stage, and then gradually increasing mechanical pumping in the later stage, so as to take into account both simple purging and continuous purging needs. Example

[0052] Based on Example 2, this embodiment further explains how, when the drive motor 300 is stopped, the residual cleaning fluid in the pump housing 101, especially in the area where the impeller 104 is located, is gradually introduced into the storage chamber 503 and finally returned to the cleaning fluid tank to achieve antifreeze protection.

[0053] In this embodiment, reference Figure 7 , Figure 9 and Figure 10 A bypass valve 209 for air supply, connecting to the outside, is provided at the liquid inlet 102. A first solenoid valve 601 is installed at the exhaust port 207. The liquid storage chamber 503 is connected to the drain branch 409, which is equipped with a one-way drain valve 410 and is connected to the cleaning fluid tank.

[0054] After the drive motor 300 stops, when the first solenoid valve 601 closes, the compressed gas pressure P4 retained in the gas storage chamber 504 continues to act on the liquid-gas separator 502, causing the cleaning fluid already stored in the liquid storage chamber 503 to flow back to the cleaning fluid tank through the drain branch 409 and the one-way drain valve 410. As the liquid in the liquid storage chamber 503 is discharged, the pressure P3 in the liquid storage chamber 503 gradually decreases. Under the continuous action of the compressed gas pressure P4 in the gas storage chamber 504, the liquid-gas separator 502 moves towards the liquid storage chamber 503, causing the volume of the liquid storage chamber 503 to decrease and the volume of the gas storage chamber 504 to increase. Thus, the cleaning fluid already in the liquid storage chamber 503 can be preferentially recovered to the cleaning fluid tank.

[0055] When further treatment of residual cleaning fluid is required inside the pump casing 101, especially in the impeller 104 area, such as... Figure 10 As shown, the first solenoid valve 601 is opened to depressurize the gas storage chamber 504, and at the same time, gas is supplied to the inner cavity of the pump housing 101 through the gas supply bypass valve 209. As the pressure in the gas storage chamber 504 decreases, the pressing effect of the liquid-gas separator 502 on the liquid storage chamber 503 weakens, the pressure P5 in the liquid storage chamber 503 decreases, the pressure P6 in the gas storage chamber 504 decreases, and the volume of the liquid storage chamber 503 increases, thereby providing space for liquid to enter the liquid storage chamber 503.

[0056] During nighttime or long-term shutdowns, the residual cleaning fluid that was originally stagnant in the impeller 104 area within the pump casing 101 gradually and slowly flows into the storage chamber 503 under the combined effects of gravity, pressure difference changes, and air supply conditions. This portion of the residual cleaning fluid that enters the storage chamber 503 can then flow back to the cleaning fluid tank via the drain branch 409 and the one-way drain valve 410.

[0057] In this embodiment, the focus of drainage is on the residual cleaning fluid inside the pump casing 101, especially in the impeller 104 area, rather than completely emptying the cleaning fluid from the entire supply pipeline. Therefore, this embodiment can effectively reduce the risk of impeller 104 freezing and jamming in low-temperature environments while avoiding waste of cleaning fluid, and also reduces the possibility of overload or even burnout of the drive motor 300 due to impeller 104 stalling when restarting. Example

[0058] This embodiment, based on embodiments 1-3, further illustrates the working method of the present invention under different water spraying conditions. Unlike the scheme that establishes air jet using a fixed delay, the present invention does not rely on a preset time delay to forcibly distinguish between water spraying and air jetting. Instead, it gradually establishes the output capacity of the gas pumping component through the state change of the liquid outlet channel 103. Thus, during the water spraying phase, the gas pumping component is in a non-operating state or a low-amplitude operating state, and the compressed air load on the drive motor 300 will not be significantly increased; the output capacity of the gas pumping component only gradually increases after the water spraying ends.

[0059] In actual use, the number of water sprays may be once or multiple times; the duration of a single water spray may also vary depending on the degree of pollution, control strategy, and environmental conditions. If a fixed delay method is used to control the air jet, when the actual water spraying time is longer than the preset delay time, it is easy for the air jet to start before the water spraying has ended. This causes the drive motor 300 to bear a large liquid pumping load and gas compression load simultaneously during the water spraying process, which may interfere with the liquid flow and affect the flushing effect.

[0060] In this embodiment, the opening and closing states of the first solenoid valve 601, the second solenoid valve 602, and the third solenoid valve 603 are controlled in conjunction with the working state of the drive motor 300, with reference to... Figure 7 It can achieve the following working modes.

[0061] (1) Spraying mode only In water spray mode only, the second solenoid valve 602 and the third solenoid valve 603 are opened, the drive motor 300 is started and drives the impeller 104 to rotate. The cleaning fluid enters the pump housing 101 through the inlet 102 and is discharged through the outlet channel 103 to rinse the parts to be cleaned.

[0062] In this mode, since the third solenoid valve 603 remains open and the outlet channel 103 is in a conductive state, the cleaning fluid output by the liquid pumping component can be discharged normally through the outlet channel 103. At this time, the liquid back pressure in the outlet channel 103 is low, and it is difficult to build up enough pressure in the energy storage triggering component to significantly push the lifting drive sleeve 402 upward. Therefore, the magnetic repulsion between the driven magnetic swashplate 405 and the tilting magnetic drive plate 404 is weak, and the variable displacement pumping component 208 is in a non-working state or a low-amplitude working state. Thus, during the water spraying stage, the output of the drive motor 300 is mainly used to drive the impeller 104 for liquid pumping, without significantly increasing the additional load for compressed air. Even if the first solenoid valve 601 is open, since the gas pumping component has not yet formed a significant pumping capacity, its impact on the water spraying process is also small.

[0063] This mode is suitable for situations where the pollution is relatively light and only liquid rinsing is required to meet the cleaning requirements.

[0064] (2) Water spraying followed by purging mode In the water spray and purging mode, the second solenoid valve 602 and the third solenoid valve 603 are opened first, the drive motor 300 is started and the impeller 104 is rotated, so that the cleaning fluid is sprayed out through the liquid outlet channel 103 to spray water to rinse the part to be cleaned.

[0065] After the water spraying ends, the third solenoid valve 603 is closed. At this time, the liquid back pressure in the liquid outlet channel 103 increases, and some liquid enters the energy storage trigger component through the liquid inlet branch 407, pushing the lifting drive sleeve 402 to move towards the tilting magnetic drive disk 404. As the lifting drive sleeve 402 moves upward, the driven magnetic sway disk 405 gradually approaches the tilting magnetic drive disk 404, causing the swing amplitude of the driven magnetic sway disk 405 driven by magnetic force to gradually increase. This, in turn, drives the pumping amplitude of the variable capacity pumping component 208 to gradually increase through the transmission link 406, gradually establishing the output capacity of the gas pumping component.

[0066] When purging is required, the first solenoid valve 601 is opened, and gas is discharged through the exhaust port 207 to purge the area to be cleaned. Since the output capacity of the gas pumping component is gradually built up only after the third solenoid valve 603 is closed, i.e. after the water spraying ends, the drive motor 300 does not bear significant liquid pumping load and gas compression load simultaneously during the water spraying phase.

[0067] This mode is suitable for routine cleaning conditions, where dirt is first removed by liquid rinsing, and then residual droplets are removed by subsequent purging.

[0068] (3) Blowing mode after multiple water sprays In the multiple water spraying and purging mode, the third solenoid valve 603 can be repeatedly opened to spray water according to the degree of contamination. During each water spraying stage, the liquid pumping component is driven by the drive motor 300. Since the liquid outlet channel 103 remains open during each water spraying stage, it is difficult to build up enough pressure in the energy storage trigger component to significantly push the lifting drive sleeve 402 upward. Therefore, the gas pumping component is in a non-working state or a low-amplitude working state during each water spraying process.

[0069] After the last water spray ends, the third solenoid valve 603 is closed, which increases the back pressure of the liquid in the liquid outlet channel 103, thereby driving the energy storage trigger component and the progressive loading mechanism to gradually establish the output capacity of the gas pumping component, and then purging is performed after the first solenoid valve 601 is opened.

[0070] Therefore, this embodiment can adapt to cleaning conditions involving multiple water sprays and avoids the gas pumping component from engaging with a large load too early during multiple water sprays.

[0071] (4) Continuous purging mode In continuous purging mode, when the third solenoid valve 603 is closed, the energy storage trigger component is continuously pressurized, and the lifting drive sleeve 402 continues to move toward the tilting magnetic drive disk 404, which further enhances the magnetic repulsion between the driven magnetic swashplate 405 and the tilting magnetic drive disk 404, and the pumping amplitude of the variable capacity pump 208 gradually increases, thereby further improving the output capacity of the gas pumping component.

[0072] In this mode, the compressed air generated in the gas storage chamber 504 can initially meet the needs of simple or initial purging. As the energy storage trigger component continues to be pressurized, the progressive loading mechanism continues to operate, and the gas pumping component enters a more significant working state, thereby achieving continuous purging. This mode is suitable for conditions with heavy pollution, thick liquid films, or requiring a longer purging time.

[0073] Therefore, this embodiment does not rely on a fixed delay time to forcibly distinguish between water spraying and air spraying. Instead, it gradually builds up the output capacity of the gas pumping component through changes in the state of the liquid outlet channel 103. During the water spraying phase, since the liquid outlet channel 103 remains open, it is difficult to build up sufficient pressure in the energy storage trigger component to significantly move the lifting drive sleeve 402 upward. Therefore, the gas pumping component is in a non-working state or a low-amplitude working state, and does not significantly increase the compressed air load on the drive motor 300. When the water spraying ends and the third solenoid valve 603 is closed, the liquid back pressure in the liquid outlet channel 103 increases, and the energy storage trigger component is pressured to push the lifting drive sleeve 402 upward, at which point the output capacity of the gas pumping component gradually increases. Thus, the drive motor 300 can be mainly used for liquid pumping during the water spraying process, and then gradually build up the purging capacity thereafter, thereby adapting to single water spraying, multiple water spraying, and different water spraying durations.

[0074] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water-air dual-purpose cleaning pump, characterized in that, include: A liquid pumping assembly includes a pump housing (101), an inlet (102) and an outlet channel (103) disposed on the pump housing (101), and an impeller (104) rotatably disposed within the pump housing (101); a gas pumping assembly includes a pump body (201), an inlet chamber (202) and an outlet chamber (203) formed within the pump body (201), an inlet check valve (204) disposed at the inlet chamber (202), an exhaust check valve (205) disposed at the outlet chamber (203), an inlet port (206) communicating with the inlet chamber (202), and a gas pumping assembly. The system includes an exhaust port (207) connected to the air chamber (203), and a variable displacement pump component (208) connecting the air inlet chamber (202) and the air outlet chamber (203) and used to change their volumes; a drive motor (300) fixedly installed between the pump housing (101) and the pump body (201), the first output shaft of the drive motor (300) being drivenly connected to the impeller (104), and the second output shaft of the drive motor (300) driving the variable displacement pump component (208) through a progressive loading mechanism; the progressive loading mechanism includes a guide sleeve (401) slidably disposed along the axial direction. The lifting drive sleeve (402) is located within the guide sleeve (401), a return spring (403) for resetting the lifting drive sleeve (402), a tilting magnetic drive disk (404) fixedly connected to the second output shaft of the drive motor (300), and a driven magnetic oscillating disk (405) disposed on the lifting drive sleeve (402). The driven magnetic oscillating disk (405) is connected to the variable displacement pump gas component (208) via a transmission link (406). An energy storage trigger assembly is disposed within the lifting drive sleeve (402) and is connected to the liquid outlet channel (1) via a liquid inlet branch (407). 03) Connect; wherein, when the liquid outlet channel (103) is closed or the liquid outlet back pressure increases, the liquid enters the energy storage trigger component through the liquid inlet branch (407) and drives the lifting drive sleeve (402) to move toward the tilting magnetic drive disk (404), so that the driven magnetic sway disk (405) gradually approaches the tilting magnetic drive disk (404), thereby making the swing amplitude of the driven magnetic sway disk (405) driven by magnetic force gradually increase, and through the transmission link (406) driving the pumping amplitude of the variable capacity pump (208) gradually increase, thereby making the gas pumping component output airflow.

2. The water-air dual-purpose cleaning pump according to claim 1, characterized in that: The energy storage triggering component includes an elastic pressure bladder (501) and a liquid-gas separation membrane (502) disposed inside the elastic pressure bladder (501). The lower end of the elastic pressure bladder (501) is fixedly connected to the inner wall of the guide sleeve (401), and the upper end of the elastic pressure bladder (501) is fixedly connected to the inner wall of the lifting drive sleeve (402). The guide sleeve (401) is fixedly installed on the upper side of the variable displacement pump gas component (208).

3. The water-air dual-purpose cleaning pump according to claim 2, characterized in that: The liquid-gas separator (502) divides the interior of the elastic pressure bladder (501) into a liquid storage chamber (503) and a gas storage chamber (504). The liquid storage chamber (503) is connected to the liquid outlet channel (103) through the liquid inlet branch (407). The liquid storage chamber (503) is also connected to the liquid outlet branch (409), and a one-way liquid outlet valve (410) is provided on the liquid outlet branch (409). The gas storage chamber (504) is connected to the gas outlet chamber (203).

4. A water-air dual-purpose cleaning pump according to claim 3, characterized in that: The liquid storage chamber (503) is configured to push the liquid-gas separator (502) to deform toward the gas storage chamber (504) after the cleaning fluid is introduced through the liquid inlet branch (407), and drive the lifting drive sleeve (402) to move through the elastic pressure bladder (501); the liquid outlet branch (409) is configured to discharge the liquid in the liquid storage chamber (503) when the lifting drive sleeve (402) is reset.

5. A water-air dual-purpose cleaning pump according to claim 4, characterized in that: The pump body (201) is provided with an air inlet (206) communicating with the air inlet chamber (202) and an exhaust port (207) communicating with the air outlet chamber (203). The liquid inlet (102) is provided with a supplementary air bypass valve (209) communicating with the outside. The exhaust port (207) is equipped with a first solenoid valve (601). After the drive motor (300) stops, when the first solenoid valve (601) is closed, the air storage chamber (504) is... The pressure of the compressed gas retained inside acts on the liquid-gas separator (502) to cause the liquid in the storage chamber (503) to flow back to the cleaning liquid tank through the drain branch (409); when the first solenoid valve (601) is opened, the gas storage chamber (504) is depressurized and gas is supplied to the inner cavity of the pump housing (101) through the gas supply bypass valve (209) so that the residual cleaning liquid in the impeller (104) area of ​​the pump housing (101) is introduced into the storage chamber (503).

6. A water-air dual-purpose cleaning pump according to claim 1, characterized in that: The inlet (102) is equipped with a second solenoid valve (602), and the outlet channel (103) is equipped with a third solenoid valve (603) to control the cleaning fluid to enter the liquid pumping assembly and the cleaning fluid to be output through the outlet channel (103).

7. A water-air dual-purpose cleaning pump according to claim 1, characterized in that: The variable displacement pump air component (208) is a rubber air sleeve. One end of the transmission connecting rod (406) is rotatably connected to the driven magnetic swashplate (405), and the other end is connected to the upper surface of the rubber air sleeve, so as to change the volume of the air inlet chamber (202) and the air outlet chamber (203) by the reciprocating deformation of the rubber air sleeve.

8. A water-air dual-purpose cleaning pump according to claim 1, characterized in that: The top of the lifting drive sleeve (402) is a spherical structure. The driven magnetic swivel disk (405) is rotatably sleeved on the surface of the spherical structure. The inclined magnetic drive disk (404) and the driven magnetic swivel disk (405) are driven by non-contact magnetic repulsion. As the driven magnetic swivel disk (405) approaches the inclined magnetic drive disk (404), its swing amplitude driven by magnetic force gradually increases.

9. A water-air dual-purpose cleaning pump according to claim 1, characterized in that: The progressive loading mechanism is configured to keep the variable displacement pump (208) in a non-working state or a low-amplitude working state when the lifting drive sleeve (402) is in the initial position, and gradually increase the driving amplitude of the variable displacement pump (208) during the upward movement of the lifting drive sleeve (402).

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