WO2023050437A1

WO2023050437A1 - Cleaning device and pump structure

Info

Publication number: WO2023050437A1
Application number: PCT/CN2021/122478
Authority: WO
Inventors: 陈涛; 陈振
Original assignee: 添可智能科技有限公司
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-06
Also published as: CN117999130A

Abstract

A cleaning device (100), comprising a pump (101), which is provided with an outer water intake portion (10a), a first water inlet (10c), an outer water output portion (10b) and a first water outlet (10d), wherein the outer water intake portion separately communicates with the first water inlet and the outer water output portion, and the outer water output portion communicates with the first water outlet; and a switch valve (102), which is arranged on an outer surface of the pump and connected to the first water inlet and the first water outlet, wherein the switch valve is turned on when a water pressure at the first water outlet exceeds a water pressure threshold, and stays off when the water pressure at the first water outlet is less than the water pressure threshold. A pump structure is further comprised. A protective effect on a water pump can be achieved by means of the above arrangement.

Description

Cleaning device and pump structure

technical field

The present application relates to the technical field of cleaning devices, in particular to a cleaning device and a pump structure.

Background technique

Cleaning machine is a kind of cleaning equipment that can spray water to clean objects such as the ground or carpet surface and recover sewage. The washing machine includes a clean water tank, a water pump and a water spray end, and the clean water or cleaning liquid in the clean water tank is delivered to the water spray end by the water pump for spraying. In case of failure or some special working conditions, the water pump keeps pumping but the water spray end does not spray water, which makes the water pump bear high pressure and is easily damaged, and the service life of the water pump is significantly shortened. Some structures for protecting the water pump have been proposed in the related art, but the structures are relatively complicated and occupy a lot of space.

Contents of the invention

The embodiment of the present application provides a cleaning device and a pump structure, which protect the water pump with a simplified structure, and the structure is simple and compact.

On the one hand, the embodiment of the present application provides a cleaning device, comprising: a pump provided with a first water inlet and a first water outlet communicating with each other; a switching valve arranged on the outer surface of the pump and connected to the first A water inlet and the first water outlet, the switch valve is opened when the water pressure of the first water outlet exceeds the water pressure threshold, and remains closed when the water pressure of the first water outlet is lower than the water pressure threshold off; one of the pump and the switch valve is provided with an outer water inlet and an outer water outlet, the outer water inlet communicates with the first water inlet, and the outer water outlet communicates with the first The water outlet is connected; the water supply device is connected with the external water inlet; the water device is connected with the external water outlet.

In some embodiments, the switching valve element includes a valve body, an elastic element and a valve core, and the valve body is provided with a water inlet end, a water outlet end, and a working chamber connecting the water inlet end and the water outlet end, The water inlet end communicates with the first water outlet, the water outlet end communicates with the first water inlet, and the elastic element is connected to the valve core and placed in the working chamber.

In some embodiments, projections of the water inlet end and the first water outlet overlap, and projections of the water outlet end and the first water inlet overlap.

In some embodiments, the axes of the water inlet end and the first water outlet coincide, and the axes of the water outlet end and the first water inlet coincide.

In some embodiments, when the switching valve is turned on, the water flowing from the first water outlet to the first water inlet is connected; when the switching valve is turned off, the water flowing from the first water outlet to the first water inlet is connected. The waterway of the water outlet is shut off.

In some embodiments, the working chamber includes a first subcavity part and a second subcavity part, one end of the first subcavity part is connected to the water inlet end, and one end of the second subcavity part is connected to the water inlet end. The water outlet end is connected, and the other end is connected to the middle position of the first sub-cavity, and the elastic element is connected to the valve core and arranged in the first sub-cavity.

In some embodiments, the elastic element is disposed at an end of the first subcavity that is far away from the water inlet end, and the end surface of the valve core that is far away from the elastic element is connected to the water inlet end to be blocked. the water inlet, or separate to open the water inlet.

In some embodiments, the valve body includes a body part, a cover plate and a seal ring, the seal ring is arranged between the body part and the cover plate part, the body part, the seal ring and the seal ring The cover plate encloses and forms the working chamber.

In some embodiments, the surface of the main body facing the cover plate is provided with a groove, a first hole and a second hole, and the first hole and the second hole are respectively provided At opposite ends of the groove part, the water inlet end is formed at the first hole part, and the second hole part passes through the body part to form the water outlet end; the cover plate faces the One side surface of the body part forms a blind hole part, and the blind hole part and the first hole part are connected to form a first subcavity part, and the cover plate faces one side surface of the body part and the groove The second sub-cavity is formed by enclosing the second sub-cavity; the elastic element is connected to the valve core and placed in the first sub-cavity.

In some embodiments, one end of the first hole close to the cover plate forms a counterbore part, the bottom wall of the counterbore part is located on the side of the groove part away from the cover plate, and the counterbore part The hole part is connected to the water inlet end through the through hole part, and the counterbore part and the through hole part form a stepped hole with a stepped surface for abutting against the valve core.

In some embodiments, a flange is provided on a peripheral wall of the first hole close to the water inlet for abutting against the valve core.

In some embodiments, the pump includes a pump body, and the pump body and the switching valve member are a functional whole.

In some embodiments, the pump includes a pump body and a first joint part and a second joint part respectively formed on the pump body, the outer water inlet part and the first water inlet are formed on the first water inlet On a joint part, the outer water outlet part and the first water outlet are formed on the second joint part; the switch valve part straddles the first joint part and the second joint part, to connect the first water inlet and the first water outlet.

In some embodiments, the first joint part has a straight pipe structure, the first joint part has a circular pipe structure, the outer water inlet part is formed at the end of the circular pipe structure, and the first water inlet Formed on the peripheral surface of the circular tube structure; the second joint part has a circular tube structure, the outer water outlet part is formed at the end of the circular tube structure, and the first water outlet is formed on the circular tube structure of the perimeter.

In some embodiments, the surface of the switching valve member connected to the first joint part and the second joint part is an arc surface or a circular surface.

In some embodiments, the pump includes a pump body, and the outer water inlet, the first water inlet, the first water outlet, and the outer water outlet are sequentially arranged on the outer surface of the pump body .

On the other hand, an embodiment of the present application provides a cleaning device, including a water supply device, a water device, and a pump assembly. The pump assembly is provided with an external water inlet and an external water outlet. The external water inlet is connected to the water supply. Connect the pump assembly, and the pump assembly includes: a pump with a first water inlet and a first water outlet, the outer water inlet communicates with the first water inlet, and the outer water outlet communicates with the first water outlet Connected, the fluid entering the first water inlet passes through the pump working chamber and is discharged from the first water outlet; the switch valve connects the first water inlet and the first water outlet, and the switch valve is in the first When the water pressure of the water outlet exceeds the water pressure threshold, it is opened, and when the water pressure of the first water outlet is lower than the water pressure threshold, it is kept closed; wherein, the water inlet end of the switch valve is located between the outer water inlet and the first water inlet. Between the water inlets, the water outlet end of the water inlet end of the switch valve is located between the outer water outlet and the first water outlet. When the switch valve is opened, the first water inlet and the first water outlet pass through The valve working chambers of the switching valve parts are communicated with each other.

On the other hand, the embodiment of the present application provides a pump structure, including a pump, which is provided with a first water inlet and a first water outlet communicating with each other; a switch valve, arranged on the outer surface of the pump and connected to the first A water inlet and the first water outlet, the switch valve is configured to be gradually opened when the water pressure at the first water outlet exceeds the water pressure threshold, and the water pressure at the first water outlet is less than the water pressure keep off when the threshold is reached; one of the pump and the switching valve is provided with an outer water inlet and an outer water outlet, the outer water inlet is connected to the first water inlet, and the outer water outlet is connected to the first water inlet. The first water outlet is connected.

In the embodiment of the present application, a first water inlet and a first water outlet connected to each other are provided on the pump, and a switching valve is arranged on the outer surface of the pump, and the first water inlet and the first water outlet are connected by the switching valve, and An external water inlet and an external water outlet are arranged on one of the pump and the switch valve, and the pump can be connected through the first water inlet, the external water inlet and water supplies such as clean water tanks, through the first water outlet, and out. The water department is connected with water appliances such as sprinklers, and the clean water or cleaning fluid is delivered to the water appliances for consumption by the water appliances; when the water appliances normally consume clean water or cleaning fluid, such as normal water spraying , the water pressure of the water outlet part is low, so that the water pressure of the first water outlet connected to it is kept at a lower level lower than the water pressure threshold. At this time, the switch valve is in a closed state so that the first water inlet and The first water outlet is disconnected; and when a fault occurs or under certain special working conditions, the pump maintains the pumping state but the water device does not consume clean water or cleaning fluid, liquid accumulation occurs in the outer water part and the water here The pressure continues to rise, and the water pressure of the first water outlet connected to it rises synchronously. When the water pressure of the first water outlet rises to exceed the water pressure threshold, the switch valve is opened to make the first water inlet and the first outlet The water port is connected, so that the water pressure balance between the outer water inlet part and the outer water outlet part is achieved, so that the water in the clean water tank stops being input to the outer water inlet part, and the water in the pump is pumped by the pump along the first water outlet- Switching valve - the first water inlet - the direction of the pump circulates, so that the pump is at a lower pressure to avoid damage and protect the pump; the above-mentioned cleaning device integrates the pump and the switching valve and directly connects it, which can reduce all The required number of connectors and pipeline length, the structure is relatively simple and the volume is relatively small, easy to layout and use.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a structural diagram of a cleaning device provided by some embodiments of the present application;

Fig. 2 is a partial exploded structure diagram of a cleaning device provided by some embodiments of the present application;

Fig. 3 is a partial structural diagram of the cleaning device in Fig. 2;

Fig. 4 is another partial structural view of the cleaning device provided by some embodiments of the present application;

Fig. 5 is another structural diagram of the cleaning device provided by some embodiments of the present application.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation shown in the drawings Or positional relationship is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

"A and/or B" includes the following three combinations: A only, B only, and a combination of A and B.

The use of "suitable for" or "configured to" in this application means open and inclusive language that does not exclude devices that are suitable for or configured to perform additional tasks or steps. Additionally, the use of "based on" is meant to be open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or beyond stated values.

In this application, the word "exemplary" is used to mean "serving as an example, illustration or illustration". Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It should be understood that one of ordinary skill in the art would recognize that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in this application.

As shown in Figure 1, the embodiment of the present application provides a cleaning device 100, including a pump 101, a switch valve 102, a water supply 103, and a water supply 104. The water pump 101 can be protected by a simplified structure, and the structure is simple and compact. Increase the safety and reliability of the use process. Here, the cleaning device 100 may be various mechanical devices capable of spraying clean water or cleaning liquid onto the area to be cleaned to perform wet scrubbing or direct flushing of the area to be cleaned, such as carpet cleaning machines, floor cleaning machines, mopping robots, The integrated sweeping and mopping robot, wet vacuum cleaner, etc. are not limited in this embodiment of the present application.

As shown in FIGS. 2-3 , the pump 101 is provided with a first water inlet 10c and a first water outlet 10d communicating with each other. Here, the first water inlet 10c and the first water outlet 10d may directly communicate with the working chamber of the pump 101, respectively. The switch valve 102 is disposed on the outer surface of the pump 101, and the switch valve 102 is connected to the first water inlet 10c and the first water outlet 10d. The switch valve 102 is configured to be gradually opened when the water pressure at the first water outlet 10d exceeds the water pressure threshold, and kept closed when the water pressure at the first water outlet 10d is lower than the water pressure threshold. Here, the water pressure threshold may be determined according to actual needs, subject to ensuring the structural safety of the pump 101 .

Here, one of the pump 101 and the switch valve 102 may be provided with an external water inlet 10a and an external water outlet 10b, the external water inlet 10a communicates with the first water inlet 10c, and the external water outlet 10b communicates with the first water outlet. 10d connected. As shown in Figure 2, in some embodiments, the pump 101 may be provided with an external water inlet 10a and an external water outlet 10b, the external water inlet 10a communicates with the first water inlet 10c, the external water outlet 10b communicates with the first outlet The water port 10d is connected. As shown in Figure 5, in other embodiments, the switch valve 102 may be provided with an external water inlet 10a and an external water outlet 10b, and accordingly, the switch valve 102 may also be provided with a water inlet 21a and a water outlet One end of the water inlet port 21a communicates with the external water outlet 10b through the fluid channel inside the switch valve 102, and the other end is connected with the first water outlet 10d, and one end of the water outlet 21b passes through another fluid channel inside the switch valve 102 It communicates with the outer water inlet 10a, and the other end is connected with the first water inlet 10c; like this, the outer water inlet 10a can be communicated with the first water inlet 10c through the water outlet 21b, and the outer water outlet 10b can be connected through the water inlet 21a and the first water inlet 10c. The first water outlet 10d is connected.

The water supply 103 is directly connected to the external water inlet 10a or communicated with pipelines, so that the clean water or cleaning liquid provided by the water supply 103 can be delivered to the working chamber of the pump 101 . Here, the water supplier 103 can be directly installed at the outer water inlet 10a, so that the two are directly connected; or, the water supplier 103 can also be connected to the outer water inlet 10a through a fluid pipeline, so that the two pipelines communicate.

The type of the water supplier 103 may be determined according to actual needs, which is not limited in this embodiment of the present application. In some embodiments, the water supply device 103 may be a water supply pipeline for connecting with a water source, and may include water pipes, joints and other water circuit elements; here, the water source is fixedly arranged at a specific position outside the cleaning device 100, and may be such as tap water Source types such as nets, liquid containers, etc. In some other embodiments, the water supply device 103 can be in the form of a clean water tank, which is arranged on the main machine of the cleaning device 100 and can store clean water or cleaning fluid for cleaning purposes; like this, the impact on the cleaning device 100 can be reduced. The pipeline constraints increase the mobility and working range of the cleaning device 100, so that the cleaning device 100 can be freely used in different environments.

The water container 104 is directly connected to the water outlet 10b or communicated with pipelines, so that the clean water or cleaning liquid taken by the pump 101 from the water supply device 103 can be delivered to the water container 104 for use by the water container 104. Here, the water appliance 104 can be directly installed at the outlet water part 10b, so that the two are directly connected; or, the water appliance 104 can also be connected to the outlet water part 10b through a fluid pipeline, so that the two pipelines communicate. The water container 104 needs to consume clean water or cleaning liquid obtained from the external water outlet part 10b during the water use process, and its type can be determined according to actual needs, which is not limited in this embodiment of the present application. In some embodiments, the water dispenser 104 may be a water sprayer, which sprays the clean water or cleaning liquid obtained from the external water outlet part 10b to the target area.

During the normal water use process of the water device 104, for example, when the water sprayer normally sprays water, the water device 104 needs to continuously consume the obtained clean water or cleaning liquid, and continuously obtain the clean water or cleaning liquid from the outgoing water part 10b, so that when going out The liquid in the water part 10b keeps flowing so that the water pressure there is low; correspondingly, the water pressure of the first water outlet 10d communicated with the outer water part 10b is also kept at a lower level that is less than the water pressure threshold, so that the switch valve member 102 remains closed, so that the water path from the first water outlet 10d to the first water inlet 10c remains disconnected, and the water path from the first water outlet 10d to the first water inlet 10c is that the first water outlet 10d flows to the first water inlet 10c. The waterway of the nozzle 10c. And under break down or some special working conditions, pump 101 needs to keep pump 101 sucking state, but when water dispenser 104 stops consuming the clean water or cleaning liquid that obtains, when for example sprinkler does not give spray water, going out water part 10b takes place. The accumulation of liquid makes the water pressure here continue to rise, and the water pressure of the first water outlet 10d connected with it rises synchronously. When the water pressure of the first water outlet 10d rises to exceed the water pressure threshold, the switch valve 102 is opened. And make the first water inlet 10c communicate with the first water outlet 10d, the water flow flows from the first water outlet 10d to the first water inlet 10c under the effect of pressure, so that at the first water inlet 10c, from the first water outlet 10d The water pressure flowing to the first water inlet 10c gradually offsets or partially offsets the water pressure of the water flowing in from the outer water inlet 10a, so that the water in the fresh water tank at least partially stops inputting to the outer water inlet 10a, and the pump 101 Under the pump 101 suction of the pump 101, at least part of the water can circulate along the direction of the first water outlet 10d-switching valve 102-the first water inlet 10c-the pump 101, so that the pump 101 is at a lower pressure to avoid In case of damage, the pump 101 is protected. After the water tank 104 returns to normal water use, the fluid in the outlet water part 10b resumes its flow, so that the water pressure of the first water outlet 10d communicating with the outlet water part 10b gradually drops to a lower level that is less than the water pressure threshold, so that the switch valve 102 meets the shut-off conditions and shuts off again, the water path from the first water outlet 10d to the first water inlet 10c remains disconnected, and the water path from the first water outlet 10d to the first water inlet 10c is that the first water outlet 10d flows to the first water inlet 10c. A waterway of the water inlet 10c, to avoid interference with the normal water delivery of the pump 101.

Compared with the related technology, the cleaning device 100 provided by the embodiment of the present application is integrally arranged and directly connected with the pump 101 and the switching valve 102, and there is no need to connect the pump 101 and the switching valve 102 through other pipeline components. On the one hand, the fluid The channel structure is relatively simple, the overall structure is relatively compact and small, and the structural reliability and stability are improved; on the other hand, the length of the fluid channel between the pump 101 and the switching valve 102 is shortened, which can increase the switching time of the switching valve 102. Sensitivity reduces the response time of the switching valve 102 and can protect the pump 101 in time. In this way, the integral structure of the pump 101 and the valve can be directly installed at the designed position, which can reduce the required space and facilitate layout and use.

The structural form of the switching valve element 102 may be determined according to actual needs, which is not limited in this embodiment of the present application. As shown in FIGS. 2-3 , in some embodiments, the switching valve element 102 may include a valve body 21 , an elastic element 22 and a valve core 23 . The valve body 21 is provided with a water inlet 21a, a water outlet 21b, and a working chamber connected to the water inlet 21a and the water outlet 21b. The elastic element 22 and the valve core 23 are connected and arranged in the working chamber. The end 21a is correspondingly arranged and communicated with the first water outlet 10d, and the water outlet 21b of the valve body 21 is correspondingly arranged and communicated with the first water inlet 10c. Preferably, the water inlet end 21a of the valve body 21 is connected with the first water outlet 10d. The projection overlaps, the water outlet 21b of the valve body 21 overlaps with the projection of the first water inlet 10c, and the projection overlap indicates that the projection of the water inlet 21a is within the projection of the first water outlet 10d, or the projection of the first water outlet 10d is within the projection of the first water outlet 10d. In the projection of the water inlet 21a, the projection of the water outlet 21b is in the projection of the first water inlet 10c, or the projection of the first water inlet 10c is in the projection of the water outlet 21b; or, the water inlet 21a of the valve body 21 and The axis of the first water outlet 10d coincides, and the axis of the water outlet 21b of the valve body 21 coincides with the axis of the first water inlet 10c. In the anhydrous state, the elastic element 22 keeps the valve core 23 in the closed position, the switching valve member 102 keeps normally closed and is in a disconnected state, and the water inlet 21a keeps shutting off; the water pressure at the first water outlet 10d is lower than that of the water When the pressure threshold is reached, the water pressure of the first water outlet 10d is less than the elastic force of the elastic element 22 on the valve core 23, and the elastic force keeps the valve core 23 in the closed position to block the fluid flow in the working chamber, and the water inlet 21a remains When the water pressure of the first water outlet 10d exceeds the water pressure threshold value, the water pressure of the first water outlet 10d is greater than the elastic force of the elastic element 22 on the valve core 23, so that the valve core 23 is displaced gradually away from the closed position. The fluid flow in the working chamber is no longer blocked, so that the water inlet 21a is opened, the water inlet 21a and the water outlet 21b are gradually connected, and the water in the pump 101 circulates, thereby releasing the pressure in the pump 101, while the elastic element 22 is further elastic Deformation and accumulation of elastic potential energy; after the water tank 104 resumes normal water use, the water pressure of the first water outlet 10d gradually drops to a lower level lower than the water pressure threshold, and the elastic element 22 releases the elastic potential energy to reset the valve core 23 to the closed position , the spool 23 again blocks the fluid flow in the working chamber, disconnects the water path from the first water outlet 10d to the first water inlet 10d, and avoids interference with the normal water delivery of the pump 101 .

The type of the elastic element 22 can be determined according to actual needs, such as springs, shrapnel, etc., which are not limited in this embodiment of the present application. Here, the elastic coefficient of the elastic element 22 can be set according to the water pressure threshold. In some embodiments, the water pressure threshold can be adjusted through the elastic element 22: when the water pressure threshold needs to be set at a larger value, the elastic element 22 with a larger elastic coefficient can be used; and when the water pressure threshold needs to be set at a higher value When the value is small, an elastic element 22 with a smaller elastic coefficient can be used.

The type of the spool 23 can be determined according to actual needs, which is not limited in this embodiment of the present application. In some embodiments, the valve core 23 can be made of elastic materials such as elastic plastics, rubber, etc., which has certain elasticity, and can better switch the working chamber through elastic deformation. In some examples, the spool 23 may be a rubber plug.

The structural form of the working chamber can be determined according to actual needs, such as straight cavity, curved cavity, etc., which are not limited in this embodiment of the present application. In other examples, the working chamber may include a first sub-cavity portion and a second sub-cavity portion. One end of the first subcavity is connected to the water inlet 21a, one end of the second subcavity is connected to the water outlet 21b, and the other end is connected to the first subcavity. Here, the second subcavity can be connected to the end of the first subcavity away from the water inlet end 21a, or can be connected to the area between the two ends of the first subcavity, which is not discussed in this embodiment of the present application. limited. Here, the elastic element 22 and the valve core 23 are connected and disposed in the first sub-cavity, and the valve core 23 can moveably control the on-off of the first sub-cavity and/or the second sub-cavity.

Exemplarily, the valve core 23 can control the on-off of the first sub-chamber and/or the second sub-chamber in a manner of peripheral sealing. Here, an interference fit is adopted between the valve core 23 and the peripheral wall of the first sub-cavity, and the valve core 23 can reciprocate along the extending direction of the first sub-cavity. Here, the elastic element 22 can be arranged on the end of the valve core 23 close to the water inlet end 21a, or on the end of the valve core 23 away from the water inlet end 21a, or sleeved on the outer peripheral side of the valve core 23. When there is no water or the water pressure of the first water outlet 10d is lower than the water pressure threshold, the valve core 23 remains between the first position and the second position of the first sub-cavity, the first position being the first sub-cavity One end close to the water inlet end 21a, the second position is the position where the first sub-cavity part is connected to the second sub-cavity part, and the first position and the second position of the first sub-cavity part are connected under the interference fit. The part of the cavity between them is blocked by sealing, and the fluid cannot flow from the water inlet end 21a to the second sub-cavity. And when the water pressure of the first water outlet 10d exceeds the water pressure threshold value, the water pressure overcomes the elastic force of the elastic element 22 and the frictional damping applied to the valve core 23 by the first sub-cavity, so that the valve core 23 moves toward the first sub-cavity. The end far away from the water inlet 21a gradually moves, and the elastic element 22 is further elastically deformed; Conduction, so that the fluid entering from the water inlet end 21a can flow to the water outlet end 21b through the first sub-cavity part and the second sub-cavity part.

Here, the end of the first subcavity close to the water inlet 21a can be connected to the water inlet 21a to form a through-hole structure; or, the end of the first subcavity close to the water inlet 21a can be connected to the water inlet 21a to form a stepped hole structure. The stepped hole may include a through hole portion and a counterbore portion, at least one end of the through hole portion forms a counterbore portion, the interface between the counterbore portion and the through hole portion is a stepped surface, the aperture of the counterbore portion is larger than the aperture of the through hole portion, and the The hole part is located between the counterbore part and the water inlet 21a, and the through hole part connects the counterbore part and the water inlet 21a; the valve core 23 can be arranged in the counterbore part, abutting on the step surface, and the through hole part can pass through the valve body 21 to form a water inlet end 21a. Here, the stepped hole may be disposed between the water inlet end 21a and the portion of the first sub-cavity connected to the second sub-cavity.

As another example, the valve core 23 can control the on-off of the first sub-chamber and/or the second sub-chamber in a manner of sealing the end face. Here, the elastic element 22 can be arranged at the end of the first subcavity away from the water inlet 21a, and the end face of the valve core 23 away from the elastic element 22 is opposite to the water inlet 21a, and the first subcavity is close to the water inlet 21a A flange portion is provided at the place, and the end surface of the valve core 23 away from the elastic element 22 can be pressed against the flange portion; in some embodiments, the flange portion is an annular flange, which surrounds the first sub-chamber The peripheral wall of the first sub-cavity is arranged in a ring, and the end surface of the valve core 23 away from the elastic element 22 can be pressed against the annular flange; in other embodiments, a gap is used between the valve core 23 and the peripheral wall of the first sub-cavity Fit to have a gap, the flange part is an annular flange, which is annularly arranged around the peripheral wall of the first sub-chamber part, the width of the annular flange part is greater than the gap width, and the end surface of the valve core 23 away from the elastic element 22 can be Press against the annular flange. In another embodiment, the flange portion may be directly disposed on the end surface of the water inlet end 21a. When there is no water or the water pressure of the first water outlet 10d is lower than the water pressure threshold, the end surface of the valve core 23 away from the elastic element 22 is connected to the water inlet 21a, so that the water inlet 21a is blocked by the end surface of the valve core 23, and the water inlet The fluid at the water end 21a cannot flow into the first subchamber; correspondingly, the fluid flow between the water inlet end 21a and the water outlet end 21b is blocked. When the water pressure of the first water outlet 10d exceeds the water pressure threshold, the end surface of the valve core 23 away from the elastic element 22 is separated from the water inlet 21a, the water inlet 21a is opened, and the fluid at the water inlet 21a can flow into the first water inlet 21a. The sub-cavity reaches the water outlet 21b through the second sub-cavity, so that the fluid is connected between the water inlet 21a and the water outlet 21b. The above-mentioned gap end face sealing structure can reduce nonlinear interference caused by frictional damping between the valve core 23 and the surrounding wall of the first sub-cavity, so that the control based on the water pressure threshold is relatively accurate.

The first sub-cavity and the second sub-cavity may be connected to form different shapes, which is not limited in this embodiment of the present application. Exemplarily, the first sub-chamber part and the second sub-chamber part can be connected to form a curved channel structure, such as a T-shaped channel structure, an L-shaped channel structure, etc., so that the working chamber can be moved in two directions. Layout, the overall size and occupied space of the compressed switch valve element 102 are compressed.

The structure of the valve body 21 can be determined according to actual needs, which is not limited in this embodiment of the present application. In some examples, the valve body 21 may include a body portion 211 , a cover plate 212 and a sealing ring 24 . The sealing ring 24 is disposed between the body portion 211 and the cover plate 212 , and the body portion 211 , the sealing ring 24 and the cover plate 212 enclose to form a working chamber. In this way, the valve body 21 can be formed with a relatively simple structure, and the processing difficulty and cost are relatively low. Here, the cavity structure of the working chamber can be formed only on the body portion 211, or only on the cover plate 212, or can be formed partly on the body portion 211 and partly on the cover plate 212. It is surrounded by the cover plate 212.

Exemplarily, a groove portion 2111 , a first hole portion 2112 and a second hole portion 2113 may be provided on a surface of the body portion 211 facing the cover plate 212 . Here, the first hole portion 2112 and the second hole portion 2113 are respectively provided at opposite ends of the groove portion 2111; Water outlet 21b. Correspondingly, the side surface of the cover plate 212 facing the body portion 211 can form a blind hole portion 2121; the blind hole portion 2121 can be connected with the first hole portion 2112 to form a first subcavity, and the side surface of the cover plate 212 facing the body portion 211 The area without the blind hole portion 2121 on the surface can be enclosed with the groove portion 2111 to form a second subcavity.

Exemplarily, the end of the first hole portion 2112 close to the cover plate 212 may form a counterbore portion, the end of the first hole portion 2112 away from the cover plate 212 may form a through hole portion, and the through hole portion may pass through the valve body 21 to form a water inlet At the end 21a, the diameter of the counterbore portion is larger than that of the through hole portion, so that the interface between the counterbore portion and the through hole portion is a stepped surface. Here, the bottom wall of the counterbore part can be located on the side of the first hole part 2112 away from the cover plate 212, so that the depth of the counterbore part is greater than the depth of the groove part 2111; The end of the groove portion 2111 is directly connected, and the end of the counterbore portion close to the through hole forms a storage space for accommodating the valve core 23, so that the valve core 23 can be moved to realize switching. An end of the first hole portion 2112 away from the cover plate 212 may pass through the body portion 211 to form a water inlet end 21a to meet water inlet requirements.

Here, the end of the first hole portion 2112 away from the cover plate 212 may form a different hole-like structure, which is not limited in this embodiment of the present application. Exemplarily, the end of the first hole portion 2112 away from the cover plate 212 may form a through hole portion, so that the first hole portion 2112 forms a stepped hole structure with a counterbore portion and a through hole portion; The end of the hole portion 2112 away from the cover plate 212 can form another counterbore portion, and the two counterbore portions at both ends of the first hole portion 2112 can be connected through through holes, so that the first hole portion 2112 is formed with two counterbore portions. and a stepped hole structure of the through hole section.

Exemplarily, a raised portion 2122 is provided on a side of the cover plate 212 away from the body portion 211 , and the blind hole portion 2121 may extend into the raised portion 2122 . In this way, the depth requirement of the blind hole portion 2121 can be satisfied by the local protrusion, so that the overall thickness of the cover plate 212 is reduced, the used manufacturing materials and the overall thickness of the valve body 21 are reduced, and the structure is relatively compact.

Exemplarily, the pump 101 may include a pump body 10, and the pump body 10 and the body part 211 are integrally formed. Here, when the pump body 10 adopts a single structure composed of only one component, the body part 211 can be integrally formed with the pump body 10 as a whole; It can be integrally formed with a component in the pump body 10 . The integral molding structure can simplify and miniaturize the structure of the pump 101 and the valve, reduce the number of parts to be assembled and the number of connection structures, make the sealing between the pump body 10 and the body part 211 better, and improve the structural reliability and stability.

In some embodiments, the pump 101 may include a pump body 10 and a first joint part 10' and a second joint part 10" respectively formed on the pump body 10, and the outer water inlet part 10a and the first water inlet 10c are formed on the second A joint part 10' is located downstream of the outer water inlet part 10a, and an outer water outlet part 10b and a first water outlet 10d are formed on the second joint part 10", located upstream of the outer water outlet part 10b. Here, the first joint part 10' and the second joint part 10" can respectively form a three-way structure. The switching valve 102 can be straddled on the first joint part 10' and the second joint part 10" to connect the first joint part 10' and the second joint part 10". The water port 10c and the first water outlet 10d make one end of the switch valve part 102 set on the first joint part 10', and the other end is set on the second joint part 10". The switch valve part 102 adopts a straddling structure. On the one hand, it can pass The switch valve 102 realizes the mutual support between the first joint part 10' and the second joint part 10", increasing the structural strength and rigidity; on the other hand, it can make the valve structure of the pump 101 relatively compact and compress the overall size. In some examples, the switch valve element 102 can be arranged on the same side of the first joint part 10' and the second joint part 10", forming a bridge connection, and the peripheral side of the first joint part 10' and the second joint part 10 ” for partial wrapping; in some other examples, the switch valve element 102 can be sleeved on the first joint part 10' and the second joint part 10", and the surrounding side of the first joint part 10' and the second The peripheral side of the joint portion 10" is fully wrapped. Here, the connection part on the switch valve part 102 that is connected to the first joint part 10' matches the shape of the first joint part 10', and the connection part on the switch valve part 102 that is connected to the second joint part 10" and the shape of the first joint part 10' match. The shape of the second joint part 10" matches to ensure that the switch valve part 102 is snugly connected with the first joint part 10' and the second joint part 10". For example, when the first joint part 10' is a circular pipe structure, The connection part on the switch valve part 102 connected with the first joint part 10' may have a circular arc groove or a circular hole structure; The connection part where the first joint part 10' is connected may have a square groove or a square hole structure.

The structural form of the first joint part 10 ′ can be determined according to actual needs, such as straight pipe joints, elbow joints, etc., which are not limited in this embodiment of the present application. In some examples, the first joint part 10' may have a straight pipe structure, the outer water inlet part 10a is formed at the end of the straight pipe structure, and the first water inlet 10c is formed on the peripheral surface of the straight pipe structure. In this way, the water inlet of the outer water inlet portion 10a can be made smoother, meeting the requirement of a larger flow of water inlet when the cleaning device 100 is working.

The structural form of the second joint part 10" can be determined according to actual needs, and can adopt types such as straight pipe joints and elbow joints, which are not limited in the embodiment of the present application. In some examples, the second joint part 10" can have Straight pipe structure, the outer water outlet part 10b is formed at the end of the straight pipe structure, and the first water outlet 10d is formed on the peripheral surface of the straight pipe structure. In this way, the water inlet of the outer water outlet part 10b can be made smoother, meeting the requirement of a relatively large flow of water inlet when the cleaning device 100 is working.

In some examples, the pump body 10 may include a main body 11 and a pump cover 12, the working chamber of the pump 101 may be formed in the main body 11, and the outer water inlet 10a, the first water inlet 10c, the outer water outlet 10b and The first water outlets 10d can be respectively disposed on the pump cover 12 , and the pump cover 12 can be connected to the switch valve 102 . In this way, the manufacturing difficulty of the pump body 10 can be reduced. Exemplarily, the pump cover part 12 and the main body part 211 can be integrally formed.

As shown in FIG. 4 , in some other embodiments, the outer water inlet 10 a , the first water inlet 10 c , the first water outlet 10 d and the outer water outlet 10 b can be arranged on the outer surface of the pump body 10 in sequence. In this way, the external water inlet part 10a and the first water inlet port 10c, the first water outlet port 10d and the external water outlet part 10b can be connected through flow channels provided inside the pump body 10, respectively.

In some other embodiments, the outer water inlet 10a and the outer water outlet 10b can be formed on the pump 101, and the water inlet 21a, the water outlet 21b, the first water inlet 10c, and the first water outlet 10d can be respectively formed on the switch valve Part 102, .

The embodiment of the present application provides a pump structure 100 ′, the pump structure 100 ′ includes a pump 101 and a switching valve 102 , please refer to the foregoing introduction for details, and details will not be repeated here. Here, the pump structure 100' can be applied to various mechanical devices provided with the water supply 103 and the water supply 104, which is not limited in this embodiment of the present application.

Here, several typical application examples are briefly introduced.

Application example one

As shown in FIGS. 1-2 , the cleaning device 100 includes a pump 101 , a switch valve 102 , a water supply device 103 and a water device 104 .

Here, the pump 101 includes a pump body 10 and a first joint part 10' and a second joint part 10" respectively formed on the pump body 10, and an outer water inlet 10a and a first water inlet 10c are formed on the first joint part 10'. The second joint part 10" is formed with an external water outlet 10b and a first water outlet 10d, and the external water inlet 10a and the external water outlet 10b communicate with the working chamber of the pump 101 respectively. The first joint part 10' has a circular tube structure, the outer water inlet part 10a is formed at the end of the circular tube structure, and the first water inlet 10c is formed on the peripheral surface of the circular tube structure. The second joint part 10" has a circular pipe structure, the outer water outlet part 10b is formed at the end of the circular pipe structure, and the first water outlet 10d is formed on the peripheral surface of the circular pipe structure, and the switch valve part 102 is connected to the first joint part 10 ', the mating surface of the second joint part 10" is an arc-shaped concave part to cooperate with the arc-shaped outer surface of the first joint part 10' and the second joint part 10".

Here, the switching valve element 102 includes a valve body 21 , an elastic element 22 and a valve core 23 . The elastic element 22 adopts a spring structure, and the valve core 23 adopts a rubber plug structure. The valve body 21 includes a body portion 211, a cover plate 212 and a sealing ring 24, the sealing ring 24 is arranged between the body portion 211 and the cover plate 212, the body portion 211 and the pump body 10 are integrally formed, and the body portion 211, the sealing ring 24 and the cover plate 212 to form a working chamber. The side surface of the body part 211 facing the cover plate 212 is provided with a groove part 2111, a first hole part 2112 and a second hole part 2113, and a blind hole part 2121 is formed on the side surface of the cover plate 212 facing the body part 211; the first hole The part 2112 can have a stepped hole structure, the depth of the counterbore part of the stepped hole structure is greater than the depth of the groove part 2111, and the through hole part passes through the body part 211 to form the water inlet 21a; the blind hole part 2121 is connected with the first hole part 2112 The first subcavity is formed, and the area on the side surface of the cover plate 212 facing the body part 211 without the blind hole 2121 and the groove part 2111 surrounds the second subcavity, so that one end of the second subcavity is connected In the middle position of the first sub-cavity, the middle position refers to any position between two opposite ends of the first sub-cavity. Here, the elastic element 22 can extend into the blind hole 2121 , the valve core 23 is disposed in the counterbore, abutting against the stepped surface, and the valve core 23 seals or releases the water inlet 21a by means of end face sealing.

Here, the water supply device 103 is a clean water tank provided on the body of the cleaning device 100 , and the water device 104 is a water spray device provided on the surface of the body of the cleaning device 100 , and the water spray device may adopt a water spray plate structure.

When the sprinkler is normally spraying water, the water pressure of the first water outlet 10d is less than the water pressure threshold, and the end face of the valve core 23 away from the elastic element 22 is connected to the water inlet 21a, so that the water inlet 21a is controlled by the valve core 23. The end face is blocked, and the fluid flow from the water inlet end 21a to the water outlet end 21b is blocked; and in case of failure or some special working conditions, for example, the pump 101 needs to maintain the suction state of the pump 101, but the sprinkler does not spray water When the water pressure of the first water outlet 10d exceeds the water pressure threshold, the end surface of the valve core 23 away from the elastic element 22 is separated from the water inlet 21a, and the water inlet 21a is released, so that the water inlet 21a and the water outlet 21b are separated. 1. Fluid communication between the first water inlet 10c and the first water outlet 10d, the water flows from the first water outlet 10d to the first water inlet 10c under the action of pressure, so that at the first water inlet 10c, from the first The hydraulic pressure of the water outlet 10d flowing to the first water inlet 10c gradually offsets or partially offsets the hydraulic pressure of the water flowing in from the outer water inlet 10a, so that the water in the clean water tank at least partially stops inputting to the outer water inlet 10a, and The water in the pump 101 can be at least partly circulated in the direction of the first water outlet 10d-switching valve 102-the first water inlet 10c-the pump 101 under the suction of the pump 101 of the pump 101, so that the pump 101 is at a lower position. Protect the pump 101 from the pressure to avoid damage.

Application example two

As shown in FIG. 4 , the cleaning device 100 includes a pump 101 , a switch valve 102 , a water supplier 103 and a water supplier 104 .

Here, the pump 101 includes a pump body 10 . On the outer surface of the pump body 10, an outer water inlet 10a, a first water inlet 10c, a first water outlet 10d and an outer water outlet 10b are arranged in sequence, the outer water inlet 10a and the first water inlet 10c, the first water outlet 10d and The outlet water parts 10b are respectively connected by flow passages provided inside the pump body 10 . For the related structures of the switch valve 102 , the water supply 103 and the water supply 104 , and the working process of the cleaning device 100 , reference can be made to Application Example 1, which will not be repeated here.

A cleaning device and a pump structure provided by the embodiments of the present application have been introduced in detail above. In this paper, specific examples are used to illustrate the principles and implementation methods of the present application. The descriptions of the above embodiments are only used to help understand the present application. method and its core idea; at the same time, for those skilled in the art, according to the idea of this application, there will be changes in the specific implementation and application scope. Application Restrictions.

Claims

A cleaning device, characterized in that it comprises:

The pump is provided with a first water inlet and a first water outlet connected to each other;

A switch valve, arranged on the outer surface of the pump and connected to the first water inlet and the first water outlet, the switch valve is opened when the water pressure of the first water outlet exceeds the water pressure threshold . Keep shutting off when the water pressure of the first water outlet is lower than the water pressure threshold; one of the pump and the switching valve is provided with an outer water inlet and an outer water outlet, and the outer The water inlet part communicates with the first water inlet, and the outer water outlet part communicates with the first water outlet;

A water supply device communicated with the external water inlet;

The water container communicates with the water outlet.
The cleaning device according to claim 1, wherein the switching valve member comprises a valve body, an elastic element and a valve core, and the valve body is provided with a water inlet end, a water outlet end, and a water inlet port connected to the water inlet port. In the working chamber of the water outlet, the water inlet is connected to the first water outlet, the water outlet is connected to the first water inlet, and the elastic element is connected to the valve core and arranged on the inside the working chamber.
The cleaning device according to claim 2, wherein projections of the water inlet end and the first water outlet overlap, and projections of the water outlet end and the first water inlet overlap.
The cleaning device according to claim 2, wherein the axes of the water inlet and the first water outlet are coincident, and the axes of the water outlet and the first water inlet are coincident.
The cleaning device according to claim 1, characterized in that, when the on-off valve element is opened, the water path flowing from the first water outlet to the first water inlet is connected; The water path from the first water outlet to the first water inlet is shut off.
The cleaning device according to claim 2, wherein the working chamber comprises a first subcavity part and a second subchamber part, one end of the first subchamber part is connected to the water inlet end, and the One end of the second sub-cavity is connected to the water outlet, and the other end is connected to the first sub-cavity, and the elastic element is connected to the valve core and then disposed in the first sub-cavity.
The cleaning device according to claim 6, wherein the elastic element is arranged at an end of the first subcavity that is far away from the water inlet end, and the end surface of the valve core that is far away from the end of the elastic element and the The water inlet end is connected to block the water inlet end, or separated to open the water inlet end.
The cleaning device according to claim 2, wherein the valve body comprises a body part, a cover plate and a sealing ring, the sealing ring is arranged between the body part and the cover plate part, and the body part, the sealing ring and the cover plate to form the working chamber.
The cleaning device according to claim 8, wherein a groove, a first hole, and a second hole are provided on the surface of the main body facing the cover plate, and the first hole and the second hole are The second holes are respectively provided at opposite ends of the groove, the water inlet end is formed at the first hole, and the second hole passes through the body to form the water outlet end;

The side surface of the cover plate facing the body part forms a blind hole part, the blind hole part and the first hole part are connected to form a first subcavity part, and the side surface of the cover plate facing the body part The surface and the groove portion are enclosed to form a second sub-cavity; the elastic element is connected to the valve core and placed in the first sub-cavity.
The cleaning device according to claim 9, wherein a counterbore is formed at an end of the first hole close to the cover, and the bottom wall of the counterbore is located at the groove and is far away from the cover. On one side of the plate, the counterbore part is connected to the water inlet end through a through hole part, the counterbore part and the through hole part form a stepped hole, and have a stepped surface for abutting against the valve core.
The cleaning device according to claim 9, wherein a flange portion is provided on a peripheral wall of the first hole portion close to the water inlet end for abutting against the valve core.
The cleaning device according to claim 1, wherein the pump includes a pump body, and the pump body and the switching valve are a functional integral body.
The cleaning device according to claim 1, wherein the pump comprises a pump body and a first joint part and a second joint part respectively formed on the pump body, the outer water inlet part and the second joint part are A water inlet is formed on the first joint part, and the external water outlet part and the first water outlet are formed on the second joint part; the switching valve is straddled between the first joint part and the first water outlet The second joint part is connected to the first water inlet and the first water outlet.
The cleaning device according to claim 13, wherein the first joint part has a circular pipe structure, the outer water inlet part is formed at the end of the circular pipe structure, and the first water inlet is formed at the end of the circular pipe structure. The surrounding surface of the circular tube structure; the second joint part has a circular tube structure, the outer water outlet part is formed at the end of the circular tube structure, and the first water outlet is formed on the peripheral surface of the circular tube structure .
The cleaning device according to claim 14, characterized in that, the surface of the switching valve connected to the first joint part and the second joint part is an arc surface or a circular surface.
The cleaning device according to claim 1, wherein the pump comprises a pump body, and the outer water inlet, the first water inlet, the first water outlet and the outer water outlet are sequentially arranged on on the outer surface of the pump body.
A cleaning device, comprising a water supply, a water supply and a pump assembly, the pump assembly is provided with an external water inlet and an external water outlet, the external water inlet is connected to the water supply, the external water outlet is connected to the pump assembly, and the pump assembly Include:

The pump is provided with a first water inlet and a first water outlet, the outer water inlet is connected to the first water inlet, the outer water outlet is connected to the first water outlet, and the fluid entering the first water inlet passes through the pump After the working room, it is discharged from the first water outlet;

A switch valve, connected to the first water inlet and the first water outlet, the switch valve is opened when the water pressure of the first water outlet exceeds the water pressure threshold, and the water in the first water outlet Keep off when the water pressure is less than the water pressure threshold;

Wherein, the water inlet end of the switch valve is located between the outer water inlet and the first water inlet, and the water outlet of the water inlet of the switch valve is located between the outer water outlet and the first water outlet. When opened, the first water inlet and the first water outlet are communicated through the valve working chamber of the switch valve member.
A pump structure, characterized in that it comprises:

The pump is provided with a first water inlet and a first water outlet connected to each other;

A switch valve, arranged on the outer surface of the pump and connected to the first water inlet and the first water outlet, the switch valve is opened when the water pressure of the first water outlet exceeds the water pressure threshold . Keep shutting off when the water pressure of the first water outlet is lower than the water pressure threshold;

One of the pump and the switching valve is provided with an external water inlet and an external water outlet, the external water inlet communicates with the first water inlet, and the external water outlet communicates with the first water outlet connected.