Non-return mechanism and drainage device

Abstract

The embodiment of the invention provides a non-return mechanism which comprises a sealing piece, a driving assembly, a first elastic piece and a shell, and the sealing piece is in closed fit with a water inlet pipeline; one end of the connecting piece is arranged in the accommodating space and forms transmission fit with the driving assembly, and the other end is connected with the sealing piece; the first elastic piece is connected with the sealing piece; the non-return mechanism has a sealing state, a middle state and an opening state; when the non-return mechanism is in the open state, the first elastic piece has the trend of moving towards the sealing piece, and the connecting piece and the driving assembly form idling fit. The first elastic piece, the driving assembly, the connecting piece and the sealing piece are matched, blockage dredging of the water inlet pipeline is automatically achieved through movement of the sealing piece, meanwhile, the driving assembly and the connecting piece are matched in an idling mode, and therefore when the sealing piece reaches the open state, a sensor does not need to be arranged to accurately control the driving assembly to stop.

Description

Technical Field

[0001] The present application relates to the field of dishwasher drainage cleaning, and particularly to a check mechanism and a drainage device. Background Art

[0002] In the drainage pipeline of a dishwasher, the sewage flowing down after washing the tableware often flows back due to changes in the air duct in the pipeline. At this time, not only the tableware will be contaminated, but also foul odors will flow back, causing great inconvenience to the use of the dishwasher. In the prior art, a rubber check valve is usually used to block the water inlet pipeline. This method is extremely unstable and may leak due to pipeline pressure fluctuations, resulting in the above problems. Summary of the Invention

[0003] The technical problem to be solved by the embodiments of the present application is to provide a check mechanism that is low-cost and can stably and efficiently prevent sewage backflow due to pipeline pressure fluctuations, including:

[0004] A seal, which forms a sealed fit with the water inlet pipeline;

[0005] A drive assembly;

[0006] A housing, which forms an accommodation space, and the seal is arranged outside the housing and connected to the housing;

[0007] A connecting member, one end of which is arranged in the accommodation space and forms a transmission fit with the drive assembly, and the other end is connected to the seal;

[0008] A first elastic member, which is connected to the seal;

[0009] The check mechanism has a sealed state, an intermediate state, and an open state;

[0010] When the check mechanism is in the open state, the connecting member drives the seal to open the water inlet pipeline, the first elastic member has a tendency to move towards the seal, and the connecting member and the drive assembly form an idle running fit.

[0011] In some embodiments, the drive assembly includes a transmission member and a drive member; a transmission fitting is arranged on the connecting member, and the transmission fitting and the transmission member form a transmission fit; the transmission fitting includes a first transmission fitting and a second transmission fitting, and the first transmission fitting is arranged on the side of the second transmission fitting facing the seal.

[0012] In some embodiments, the transmission member includes a plurality of transmission features; when the anti-backflow mechanism is in the open state, the first elastic member is in a compressed state, and one of the transmission features cooperates with the first transmission mating member, and the first transmission mating member drives the connecting member to move in a direction opposite to the direction of the opening of the water inlet pipeline, so that one of the transmission features slides along the first transmission mating member, resulting in idling;

[0013] When one of the transmission features idles along the first transmission mating member, the first elastic member drives the sealing member to move towards the water inlet pipeline, thereby driving the first transmission mating member on the connecting member to move, so that the first transmission mating member moves to cooperate with another transmission feature;

[0014] The above process is repeated to make a plurality of the transmission features and the first transmission mating member perform idling cooperation, so that the connecting member performs a reciprocating motion.

[0015] In some embodiments, when the sealing member is in a closed state, the connecting member drives the sealing member to close the water inlet pipeline, and the second transmission mating member and the transmission member form an idling cooperation.

[0016] In some embodiments, a sliding portion is provided on one side of the connecting member facing the housing, and a sliding mating feature is provided on one side of the housing facing the connecting member, and the sliding portion and the sliding mating feature cooperate with each other.

[0017] In some embodiments, the transmission mating member is disposed on the side of the sliding portion facing away from the housing, a first accommodation groove is provided on the side of the sliding portion facing away from the housing, the second transmission mating member is disposed in the first accommodation groove, and the second transmission mating member can slide in the first accommodation groove.

[0018] In some embodiments, the second transmission member includes a second elastic member and a second transmission mating feature, one end of the second elastic member abuts against the connecting member, and the other end of the second elastic member abuts against the second transmission mating feature.

[0019] In some embodiments, a second accommodation groove is provided in the second transmission mating member, the second elastic member is disposed in the second accommodation groove, the opening of the second accommodation groove faces the first transmission mating member, and the second elastic member abuts against the second accommodation groove to the connecting member;

[0020] When the check mechanism is in the sealed state, one of the transmission features cooperates with the second transmission cooperation feature, and the second transmission cooperation feature moves along the first accommodation groove, so that one of the transmission features slides along the second transmission cooperation feature, resulting in idling;

[0021] When one of the transmission features idles along the second transmission cooperation feature, the second elastic member drives the second transmission cooperation feature to move in the opposite direction to the opening of the second accommodation groove, so that the second transmission cooperation feature moves to abut against the other transmission feature;

[0022] The above process is cycled to make multiple transmission features and the second transmission cooperation feature perform idling cooperation, so that the second transmission cooperation member performs reciprocating motion.

[0023] In some embodiments, the intermediate state includes a first intermediate state and a second intermediate state;

[0024] When the check mechanism is in the first intermediate state, the connecting member drives the sealing member and the first elastic member to move towards the opening direction of the water inlet pipeline until the second transmission cooperation member and the transmission member form an idling cooperation;

[0025] When the check mechanism is in the second intermediate state, the connecting member drives the sealing member and the first elastic member to move towards the housing direction until the connecting member performs reciprocating motion.

[0026] In some embodiments, the connecting member includes a first section and a second section. The first section forms a transmission cooperation with the transmission member, and the second section drives the sealing member to seal or open the water inlet pipeline.

[0027] In some embodiments, a limiting member is further provided between the first section and the second section, and the limiting member is used to limit the sliding position of the connecting member;

[0028] A limiting groove is provided on the connecting surface of the housing and the sealing member. The second section passes through the limiting groove and is connected to the sealing member. A mating connecting member is provided at the end of the second section and the sealing member, and the second section drives the sealing member to move through the mating connecting member.

[0029] On the other hand, the present application also provides a drainage device, including:

[0030] The above check mechanism;

[0031] A drainage mechanism, the drainage mechanism includes a water inlet pipeline, a water outlet pipeline and a connecting pipeline;

[0032] A drainage pump, the drainage pump comprising a rotating assembly, a driver and a support member;

[0033] The check mechanism abuts against the water inlet pipe, the connecting pipe is located between the water inlet pipe and the water outlet pipe, and the drainage pump is arranged between the water outlet pipe and the connecting pipe.

[0034] In some embodiments, the rotating assembly includes a rotating member and a rotating connecting member, the support member is located between the rotating member and the driver, the connecting pipe is provided with an opening facing the support member, the support member is in close fit with the opening, and the rotating member is located in the connecting pipe;

[0035] The support member is conical towards the opening, and the support member is provided with an avoidance member. The rotating connecting member passes through the support member and enters the driving assembly. The rotating connecting member connects the rotating member and the driver, and the driver drives the rotating connecting member to rotate so as to drive the rotating member to rotate.

[0036] In this application, by forming a cooperation among the first elastic member, the driving assembly, the connecting member and the sealing member, the dredging and blocking of the water inlet pipe are automatically realized through the movement of the sealing member. At the same time, the driving assembly and the connecting member form an idle running cooperation. When the sealing member reaches the open state, there is no need to set a sensor to accurately control the driving assembly to stop, which reduces the cost and avoids damage to the sealing member caused by excessive movement of the driving assembly. At the same time, the cooperation of the driving member, the connecting member and the sealing member makes the pipeline pressure fluctuation not affect the movement of the sealing member, and stably and efficiently prevents sewage backflow due to pipeline pressure fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0038] Figure 1 is a schematic structural diagram of the check mechanism in the embodiment of the present application;

[0039] Figure 2 is Figure 1 an exploded structural diagram of the check mechanism in the embodiment;

[0040] Figure 3 is Figure 1 a front elevation structural diagram of the check mechanism in the embodiment in the open state;

[0041] Figure 4 is Figure 3Schematic cross-sectional structure diagram of the check mechanism in the A-A section of the embodiment;

[0042] Figure 5 Yes Figure 4 Enlarged schematic cross-sectional structure diagram of the check mechanism in the C section of the embodiment;

[0043] Figure 6 Yes Figure 1 Elevation structure schematic diagram of the check mechanism in the closed state of the embodiment;

[0044] Figure 7 Yes Figure 6 Schematic cross-sectional structure diagram of the check mechanism in the B-B section of the embodiment;

[0045] Figure 8 Yes Figure 3 Schematic structure diagram of the check mechanism 1 of another embodiment

[0046] Figure 9 Is the schematic structure diagram of the drainage device of the embodiment of the present application;

[0047] Figure 10 Yes Figure 9 Elevation structure schematic diagram of the drainage pump in the embodiment;

[0048] Figure 11 Yes Figure 10 Schematic cross-sectional structure diagram of the drainage pump in the D-D section of the embodiment;

[0049] Reference numerals in the drawings: 1 check mechanism, 10 seal, 20 drive assembly, 200 transmission member, 201 drive member, 30 housing, 300 sliding fit feature, 40 connecting member, 400 first section, 4000 sliding portion, 4001 first accommodation groove, 4002 transmission fit member, 4003 first transmission fit member, 4004 second transmission fit member, 4004a second transmission fit feature, 4004b second elastic member, 4004c second accommodation groove, 401 second section, 4010 mating connecting member, 4011 limiting member, 4005 third transmission fit member, 4006 third elastic member, 4007 third accommodation groove, 50 first elastic member, 60 limiting groove, 7 drainage mechanism, 70 inlet pipeline, 71 outlet pipeline, 72 connecting pipeline, 8 drainage pump, 80 rotating assembly, 800 rotating member, 801 rotating connecting member, 81 driver, 82 support member. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0051] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

[0052] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. The terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes unlisted steps or units, or optionally further includes other steps or components inherent to these processes, methods, products, or devices.

[0053] Referring to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0054] In the field of dishwashers, after the dishwashing operation, due to the complex internal environment of the sewage pipe, the gas in the sewage pipe often changes due to the pressure change in the sewage pipe, causing the sewage in the drainage pipe to flow back. This not only pollutes the tableware but also causes the reflux of odors, greatly inconveniencing the use of the dishwasher. In the prior art, a rubber check valve is usually used to block the water inlet pipe, but this method is highly unstable and may leak due to pressure fluctuations in the pipeline, resulting in the above problems.

[0055] The purpose of the embodiments of this application is to overcome the defects and deficiencies in the prior art and provide a check mechanism, which aims to solve the problems of unstable blocking and complex manufacturing and high cost of the check mechanism in the prior art.

[0056] As Figure 1 and Figure 2 shown, Figure 1 is a schematic structural diagram of the check mechanism according to the embodiments of this application, Figure 2 is Figure 1 an exploded structural diagram of the check mechanism according to the embodiments. The check mechanism 1 includes a seal 10, a drive assembly 20, a housing 30, a connecting member 40, and a first elastic member 50. Among them, the seal 10 forms a sealed fit with the water inlet pipe 70. The housing 30 forms an accommodating space, and the seal 10 is disposed outside the housing 30 and connected to the housing 30. One end of the connecting member 40 is disposed in the accommodating space and forms a transmission fit with the drive assembly 20, and the other end is connected to the seal 10. The first elastic member 50 is connected to the seal 10. The drive assembly 20 includes a transmission member 200 and a drive member 201. In some embodiments, the transmission member 200 includes multiple transmission features, the transmission member 200 is a reduction gear set, and the drive member 201 is a drive motor. The drive motor transmits power to the connecting member 40 through the worm and the reduction gear set, so that the connecting member 40 drives the seal 10 to move.

[0057] As Figure 1 and Figure 2 shown, in some embodiments, in order to block and open the water inlet pipe 70 with the seal 10, the seal 10 has a certain elasticity and a certain compressive strength. Therefore, the seal 10 is a rubber plug that cooperates with the water inlet pipe 70. Among them, the seal 10 is divided into a plug section and an elastic section. The elastic section is a spring-shaped hollow rubber part with elasticity that can be compressed and extended. The elastic section of the seal 10 is connected to the housing 30, so that the seal 10 can expand and contract along the housing 30. The first elastic member 50 is a spring that is always in a compressed state. The first elastic member 50 is disposed inside the first seal 10, and one end of the first elastic member 50 abuts against the housing 30, and the other end abuts against the seal 10.

[0058] As Figure 3And Figure 4 As shown Figure 3 is Figure 1 a schematic elevation view of the check mechanism in the open state of the embodiment, Figure 4 is Figure 3 a schematic cross-sectional view of the check mechanism of the embodiment at A-A. In some embodiments, in order to enable the connecting member 40 to slide while abutting against the housing 30 and at the same time drive the seal member 10 to move at the center of the seal member 10, the connecting member 40 is a connecting rod member, and the connecting member 40 includes a first section 400 and a second section 401. The first section 400 forms a driving fit with the driving member 200, and the second section 401 drives the seal member 10 to close or open the water inlet pipeline 70. A limiting member 4011 is further provided between the first section 400 and the second section 401. The first section 400 and the second section 401 are arranged in parallel, and the limiting member 4011 is perpendicular to the first section 400 and the second section 401. When the first section 400 slides to the housing 30, the limiting member 4011 abuts against the housing 30, thereby restricting the sliding position of the first section 400; a limiting groove 60 is provided on the connecting surface of the housing 30 and the seal member 10, and the limiting groove 60 protrudes towards the seal member 10, so that the second section 401 of the connecting member 40 is clamped with the limiting groove 60. The second section 401 passes through the limiting groove 60 and is connected to the seal member 10. A mating connecting member 4010 is provided at the end of the second section 401 and the seal member 10. The second section 401 drives the seal member 10 to move through the mating connecting member 4010. The mating connecting member 4010 can be, but is not limited to, a protruding member that is clamped with the seal member 10 and the connecting member 40. The mating connecting member 4010 is provided separately instead of being integrally provided with the connecting member 40 or the seal member 10, which can facilitate the installation of the overall check mechanism 1.

[0059] As Figure 3 、 Figure 4 and Figure 5 shown Figure 5 is Figure 4 a schematic enlarged cross-sectional view of the check mechanism of the embodiment at C. A sliding portion 4000 is provided on one side of the first section 400 facing the housing 30, and a sliding fit feature 300 is provided on one side of the housing 30 facing the connecting member 40. The sliding portion 4000 and the sliding fit feature 300 are matched. In some embodiments, the sliding portion 4000 is a circular rod on the connecting member 40, and the sliding fit feature 300 is a circular accommodating groove matching the shape of the sliding portion 4000, so that the sliding portion 4000 and the sliding fit feature 300 form a moving feature similar to a guide rail assembly. The housing 30 can limit the sliding position of the first section 400, thereby enabling the connecting member 40 to move more stably and reducing the probability of sliding misalignment during the sliding process.

[0060] As Figure 4 andFigure 5 As shown, a transmission mating member 4002 is provided on the connecting member 40, and the transmission mating member 4002 and the transmission member 200 form a transmission mating; the transmission mating member 4002 includes a first transmission mating member 4003 and a second transmission mating member 4004, and the first transmission mating member 4003 is arranged on the side of the second transmission mating member 4004 facing the sealing member 10. In some embodiments, the transmission member 200 is a reduction gear, the first transmission mating member 4003 is a tooth engaged with the connecting member 40 integrally formed, and the second transmission mating member 4004 is a tooth block with teeth, so that the first transmission mating member 4003 forms a stable mating relationship with the transmission member 200, and the second transmission mating member 4004 can move to form an idle running mating with the transmission member 200.

[0061] As Figure 4 and Figure 5 shown, the transmission mating member 4002 is arranged on the side of the sliding part 4000 facing away from the housing 30. A first accommodating groove 4001 is provided on the side of the sliding part 4000 facing away from the housing 30. The second transmission mating member 4004 is arranged in the first accommodating groove 4001, and the second transmission mating member 4004 can slide in the first accommodating groove 4001. In some embodiments, the first accommodating groove 4001 is a sliding space matching the second transmission mating member 4004, so that the second transmission mating member 4004 can slide therein; the second transmission member 200 includes a second elastic member 4004b and a second transmission mating feature 4004a. One end of the second elastic member 4004b abuts against the connecting member 40, and the other end of the second elastic member 4004b abuts against the second transmission mating feature 4004a. The second elastic member 4004b can be, but is not limited to, a spring that is always in a compressed state, and the second elastic member 4004b is always in a compressed state. A second accommodating groove 4004c is provided in the second transmission mating member 4004, and the second elastic member 4004b is arranged in the second accommodating groove 4004c; in some embodiments, the second accommodating groove 4004c matches the shape of the second elastic member 4004b, and the second accommodating groove 4004c is formed by enclosing the second transmission mating member 4004. The opening of the second accommodating groove 4004c faces the first transmission mating member 4003. The second elastic member 4004b abuts against the second transmission mating member 4004 in the second accommodating groove 4004c, and abuts the second transmission mating member 4004 against the housing 30. By setting the second elastic member 4004b to be always in a compressed state, the second elastic member 4004b can move in the first accommodating groove 4001 when subjected to an external force, and when the external force disappears, it can return to its original position under the force of the second elastic member 4004b, thus achieving the idle running condition.

[0062] As Figure 4 、 Figure 6 and Figure 7 shown, Figure 6 isFigure 1 Schematic elevation view of the check mechanism in the closed state in the embodiment Figure 7 is Figure 6 Schematic cross-sectional view of the check mechanism at B-B in the embodiment. The check mechanism 1 has a sealed state, an intermediate state, and an open state. When the check mechanism 1 is in the sealed state, the connecting member 40 drives the sealing member 10 to seal the water inlet pipeline 70, and the second transmission mating member 4004 and the transmission member 200 form an idle running fit. When the check mechanism 1 is in the open state, the first elastic member 50 is in a compressed state, and the connecting member 40 drives the sealing member 10 to fully open the water inlet pipeline 70 so that water can flow into the water inlet pipeline 70. The intermediate state includes a first intermediate state and a second intermediate state. When the check mechanism 1 is in the first intermediate state, the connecting member 40 drives the sealing member 10 to move towards the water inlet pipeline 70, thereby sealing the water inlet pipeline 70. When the check mechanism 1 is in the second intermediate state, the connecting member 40 drives the sealing member 10 and the first elastic member 50 to move towards the housing 30, thereby opening the opening of the water inlet pipeline 70.

[0063] As Figure 4 shown, when the check mechanism 1 is in the open state, a transmission feature cooperates with the first transmission mating member 4003. The first transmission mating member 4003 drives the connecting member 40 to move in the opposite direction of the opening direction of the water inlet pipeline 70, so that a transmission feature slides along the first transmission mating member 4003, thereby idling. When a transmission feature idles along the first transmission mating member 4003, the first elastic member 50 drives the sealing member 10 to move towards the water inlet pipeline 70, thereby driving the first transmission mating member 4003 on the connecting member 40 to move, so that the first transmission mating member 4003 moves to cooperate with another transmission feature. By repeating the above process, multiple transmission features and the first transmission mating member 4003 are in an idle running fit, so that the connecting member 40 reciprocates. In some embodiments, the transmission feature is the tooth of a gear, and the first transmission mating member 4003 is one or more teeth integrated with the connecting member 40. When the transmission member 200 drives the tooth of the first transmission mating member 4003 closest to the sealing member 10 to move, the transmission feature and the first transmission mating member 4003 are no longer in a meshing relationship, but the transmission feature overcomes the compressed first elastic member 50 to drive the first transmission mating feature to move, thereby driving the connecting member 40 to move. When moving a certain distance, the transmission feature and the first transmission member 4003 idle. At this time, the connecting member 40 no longer receives the force brought by the transmission feature, but receives the force of the first elastic member 50 generated by compression towards the sealing member 10. At this time, the connecting member 40 moves towards the sealing member 10 until it abuts against the next transmission feature. The connecting member 40 reciprocates until the driving member 201 stops.

[0064] As shown Figure 8 in Figure 8 Figure Figure 3 4, it is a schematic structural diagram of the check mechanism 1 of another embodiment. In this embodiment, a third accommodation groove 4007 is provided on the side of the first transmission fitting 4003 facing the seal 10. A third transmission fitting 4005 is arranged in the third accommodation groove 4007, and a third elastic member 4006 is arranged in the third transmission fitting 4005. One end of the third elastic member 4006 abuts against the third transmission fitting 4005, and the other end abuts against the first transmission fitting 4003. When the check mechanism 1 is in the open state, the third elastic member 4006 drives the third transmission fitting 4002 to move along the direction of the first transmission fitting 4003 in the third accommodation groove 4007, so as to have an idle running fit. At this time, the third elastic member 4006 and the first elastic member 50 jointly drive the connecting member 40 and the third transmission fitting 4005 to return to their original positions. In this embodiment, since the third transmission fitting 4005 performs a transfer fit and no longer depends solely on the first elastic member 50, it is more stable.

[0065] As shown Figure 7 in Figure 5, when the check mechanism 1 is in the sealed state, a transmission feature cooperates with the second transmission fitting feature 4004a. The second transmission fitting feature 4004a moves along the first accommodation groove 4001, so that a transmission feature slides along the second transmission fitting feature 4004a, thereby having an idle running; when a transmission feature has an idle running along the second transmission fitting feature 4004a, the second elastic member 4004b drives the second transmission fitting feature 4004a to move in the opposite direction to the opening of the second accommodation groove 4004c, so that the second transmission fitting feature 4004a moves to abut against another transmission feature; repeating the above process, multiple transmission features and the second transmission fitting feature 4004a have an idle running fit, so that the second transmission fitting 4004 performs a reciprocating motion. In some embodiments, the transmission feature is the tooth of a gear, and the second transmission fitting 4004 is an independent block with a single engaging tooth. The transmission member 200 drives the second transmission fitting 4004 to move. Since the second transmission fitting 4004 has only one engaging tooth, the second transmission fitting 4004 is arranged in the first accommodation groove 4001, and the compressed second elastic member 4004b in the second transmission fitting feature 4004a abuts against the housing 30. Therefore, a transmission feature overcomes the force of the compressed second elastic member 4004b to drive the second transmission fitting 4004 to move along the first accommodation groove 4001 until the transmission feature and the second transmission fitting 4004 have an idle running; at this time, the second transmission fitting 4004 is subjected to the force of the compressed second elastic member 4004b, and thus moves along the first accommodation groove 4001 until it abuts against another transmission feature; the second transmission fitting 4004 repeats the above process, thereby forming an idle running fit until the driving member 201 stops.

[0066] When the check mechanism 1 is in the first intermediate state, the connecting member 40 drives the sealing member 10 and the first elastic member 50 to move towards the opening direction of the water inlet pipeline 70 until the second transmission fitting 4004 and the transmission member 200 form an idle running fit; when the check mechanism 1 is in the second intermediate state, the connecting member 40 drives the sealing member 10 and the first elastic member 50 to move towards the housing 30 until the connecting member 40 reciprocates.

[0067] In this application, by forming a cooperation among the first elastic member 50, the drive assembly 20, the connecting member 40 and the sealing member 10, the dredging and blocking of the water inlet pipeline 70 are automatically realized through the movement of the sealing member 10. At the same time, the drive assembly 20 and the connecting member 40 form an idle running fit. When the sealing member 10 reaches the open state, there is no need to set a sensor to precisely control the stop of the drive assembly 20, which reduces the cost and avoids damage to the sealing member 10 caused by excessive movement of the drive assembly 20. At the same time, the cooperation of the drive member, the connecting member 40 and the sealing member 10 makes the pipeline pressure fluctuation not affect the movement of the sealing member 10, and stably and efficiently prevents the backflow of sewage due to the pipeline pressure fluctuation.

[0068] At the same time, this application also provides a drainage device, as Figure 9 shown, Figure 9 is a schematic structural diagram of the drainage device according to the embodiment of this application. The drainage device includes the above-mentioned check mechanism 1, a drainage mechanism 7 and a drainage pump 8; wherein, the drainage mechanism 7 includes a water inlet pipeline 70, a water outlet pipeline 71 and a connecting pipeline 72; the drainage pump 8 includes a rotating assembly 80, a driver 81 and a support member 82; the check mechanism 1 abuts against the water inlet pipeline 70, the connecting pipeline 72 is located between the water inlet pipeline 70 and the water outlet pipeline 71, and the drainage pump 8 is arranged between the water outlet pipeline 71 and the connecting pipeline 72. In some embodiments, the drainage mechanism 7 is a drainage pipeline for guiding sewage such as dishwashing water into the sewage pipeline; the check mechanism 1 is used for dredging and blocking the drainage mechanism 7; the drainage pump 8 is used to increase the drainage speed.

[0069] As Figure 10 and Figure 11 shown, Figure 10 is Figure 9 a schematic elevation structure diagram of the drainage pump in the embodiment, Figure 11 is Figure 8 a schematic cross-sectional structure diagram of the drainage pump at D-D in the embodiment. The rotating assembly 80 includes a rotating member 800 and a rotating connecting member 801. The support member 82 is located between the rotating member 800 and the driver 81. The connecting pipeline 72 is provided with an opening towards the support member 82, and the support member 82 is in close fit with the opening. The rotating member 800 is located in the connecting pipeline 72; in some embodiments, the rotating member 800 is an impeller, the rotating connecting member 801 is a rotating shaft, and the driver 81 is a pump body, and the pump body is used to rotate the rotating member 800.

[0070] In some embodiments, as Figure 6 shown, the support member 82 is conical towards the opening, and the support member 82 is provided with an avoidance member. The rotary connecting member 801 passes through the support member 82 and enters the driver 81. The rotary connecting member 801 connects the rotary member 800 and the driver 81, and the driver 81 drives the rotary connecting member 801 to rotate so as to drive the rotary member 800 to rotate. The inverted conical support member 82 can increase the water receiving area on the premise of keeping the installation space unchanged. When the rotary member 800 rotates to drain water, it cooperates with the conical surface of the support member 82 to generate eddy currents, effectively increasing the drainage flow rate.

[0071] The above are only some embodiments of the present application, and thus do not limit the protection scope of the present application. Any equivalent mechanism or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A check mechanism, characterized in that, Comprising: A seal which forms a sealed fit with the water inlet pipe. A drive assembly. A housing which forms a receiving space, and the seal is disposed outside the housing and connected to the housing. A connecting member, one end of which is disposed in the receiving space and forms a transmission fit with the drive assembly, and the other end is connected to the seal. A first elastic member which is connected to the seal. The check mechanism has a sealed state, an intermediate state, and an open state. When the check mechanism is in the open state, the connecting member drives the seal to open the water inlet pipe, the first elastic member has a tendency to move towards the seal, and the connecting member and the drive assembly form an idle running fit.

2. The check mechanism according to claim 1, characterized in that, The drive assembly includes a transmission member and a drive member; a transmission fitting is provided on the connecting member, and the transmission fitting and the transmission member form a transmission fit; the transmission fitting includes a first transmission fitting and a second transmission fitting, and the first transmission fitting is disposed on the side of the second transmission fitting facing the seal.

3. The check mechanism according to claim 2, wherein, The transmission member includes a plurality of transmission features; when the check mechanism is in the open state, the first elastic member is in a compressed state, one of the transmission features cooperates with the first transmission fitting, and the first transmission fitting drives the connecting member to move in the opposite direction to the opening direction of the water inlet pipe, so that one of the transmission features slides along the first transmission fitting, thereby causing idle running. When one of the transmission features idles along the first transmission fitting, the first elastic member drives the seal to move towards the water inlet pipe, thereby driving the first transmission fitting on the connecting member to move, so that the first transmission fitting moves to cooperate with another one of the transmission features. The above process is cycled, so that a plurality of the transmission features and the first transmission fitting form an idle running fit, thereby causing the connecting member to perform a reciprocating motion.

4. The check mechanism according to claim 2, wherein When the seal is in the sealed state, the connecting member drives the seal to seal the water inlet pipe, and the second transmission fitting and the transmission member form an idle running fit.

5. The check mechanism according to claim 4, characterized in that, A sliding portion is provided on the side of the connecting member facing the housing, and a sliding fit feature is provided on the side of the housing facing the connecting member, and the sliding portion and the sliding fit feature cooperate with each other.

6. The check mechanism according to claim 5, characterized in that, The transmission fitting is disposed on the side of the sliding portion facing away from the housing, a first receiving groove is provided on the side of the sliding portion facing away from the housing, the second transmission fitting is disposed in the first receiving groove, and the second transmission fitting can slide in the first receiving groove.

7. The check mechanism according to claim 6, characterized in that, The second transmission member includes a second elastic member and a second transmission feature, one end of the second elastic member abuts against the connecting member, and the other end of the second elastic member abuts against the second transmission feature.

8. The check mechanism according to claim 7, wherein, A second receiving groove is provided in the second transmission fitting, the second elastic member is disposed in the second receiving groove, the opening of the second receiving groove faces the first transmission fitting, and the second elastic member abuts against the second receiving groove to the connecting member. When the check mechanism is in the sealed state, one of the transmission features cooperates with the second transmission cooperation feature, and the second transmission cooperation feature moves along the first accommodation groove, so that one of the transmission features slides along the second transmission cooperation feature, resulting in idling; When one of the transmission features idles along the second transmission cooperation feature, the second elastic member drives the second transmission cooperation feature to move in the direction opposite to the opening of the second accommodation groove, so that the second transmission cooperation feature moves to abut against the other transmission feature; The above process is repeated to make multiple transmission features and the second transmission cooperation feature idle and cooperate, so that the second transmission cooperation member reciprocates.

9. The check mechanism according to claim 2, characterized in that, The intermediate state includes a first intermediate state and a second intermediate state; When the check mechanism is in the first intermediate state, the connecting member drives the sealing member and the first elastic member to move in the direction of the opening of the water inlet pipeline until the second transmission cooperation member and the transmission member form an idling cooperation; When the check mechanism is in the second intermediate state, the connecting member drives the sealing member and the first elastic member to move towards the housing until the connecting member reciprocates.

10. The check mechanism according to claim 2, wherein, The connecting member includes a first section and a second section. The first section forms a transmission cooperation with the transmission member, and the second section drives the sealing member to close or open the water inlet pipeline.

11. The check mechanism according to claim 10, wherein, A limiting member is further provided between the first section and the second section, and the limiting member is used to limit the sliding position of the connecting member; A limiting groove is provided on the connection surface between the housing and the sealing member. The second section passes through the limiting groove and is connected to the sealing member. A cooperating connecting member is provided at the end of the second section and the sealing member, and the second section drives the sealing member to move through the cooperating connecting member.

12. A drainage device, characterized in that, Comprising: The check mechanism according to any one of claims 1-11; A drainage mechanism, the drainage mechanism including a water inlet pipeline, a water outlet pipeline and a connecting pipeline; A drainage pump, the drainage pump including a rotating assembly, a driver and a support member; The check mechanism abuts against the water inlet pipeline, the connecting pipeline is located between the water inlet pipeline and the water outlet pipeline, and the drainage pump is arranged between the water outlet pipeline and the connecting pipeline.

13. The drainage device according to claim 12, characterized in that, The rotating assembly includes a rotating member and a rotating connecting member. The support member is located between the rotating member and the driver. The connecting pipeline is provided with an opening facing the support member, and the support member is closely attached to the opening. The rotating member is located in the connecting pipeline; The support member is conical towards the opening, and the support member is provided with an avoidance member. The rotating connecting member passes through the support member and enters the driver. The rotating connecting member connects the rotating member and the driver, and the driver drives the rotating connecting member to rotate so as to drive the rotating member to rotate.

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