Suction device and shower

Abstract

The utility model discloses a suction device and a shower. The suction device comprises a body and an impeller set. The body is provided with a first cavity, a second cavity and a water outlet cavity, the first cavity is suitable for circulating a first medium, the second cavity is suitable for circulating a second medium, and the water outlet ends of the first cavity and the second cavity are both communicated with the water inlet end of the water outlet cavity, so that the first medium and the second medium are allowed to be mixed at the water outlet cavity. The first impeller is located in the first cavity, the first impeller is suitable for rotating when a first medium circulates in the first cavity, the first impeller rotates through time acting force on the first impeller when the first medium circulates, and due to the fact that the first impeller and the second impeller are connected in a rotation stopping mode, the second impeller located in the second cavity can be driven to rotate. When the second impeller rotates, negative pressure is generated so that the second medium can flow to the water outlet cavity and be mixed with the first medium in the water outlet cavity, the purpose of sucking the second medium is achieved, and compared with an electric pump, the cost of the mode is lower.

Description

TECHNICAL FIELD

[0001] The utility model relates to water outlet product field, concretely relates to a suction device and shower. BACKGROUND

[0002] In prior art, the suction device usually has a main water path for water outlet or water after temperature adjustment, in order to increase its functionality, usually also has a branch water path, such as the water path of cleaning liquid, the water path of residual water reuse, and the branch water path usually needs to realize water pumping through the water pump power motor, however, due to the requirements of power supply, waterproof and other requirements of the electric pump, it leads to higher cost or more harsh use environment, and if the power supply of the electric pump is realized by the way of water power generation, the conversion efficiency is low from water energy to kinetic energy, kinetic energy to electric energy, and electric energy to water kinetic energy. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects or problems in the background art, and provides a suction device and shower.

[0004] In order to achieve the above-mentioned purpose, the utility model and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Scheme one, a suction device, comprising

[0006] A body provided with a first cavity and a second cavity, a water outlet cavity, the first cavity is suitable for flowing through the first medium, the second cavity is suitable for flowing through the second medium, the water outlet end of the first cavity and the second cavity is communicated with the water inlet end of the water outlet cavity;

[0007] Impeller set, comprising a first impeller and a second impeller connected with each other, the first impeller is located in the first cavity, the second impeller is located in the second cavity, the first impeller is suitable for rotating when the first medium flows in the first cavity, to drive the second impeller to rotate, the second impeller is suitable for generating negative pressure in the second cavity when rotating, so that the second medium is sucked to the water outlet cavity and mixed with the first medium in the water outlet cavity.

[0008] Scheme two, based on scheme one, one of the first impeller and the second impeller is a forward impeller, and the other is a reverse impeller.

[0009] Scheme three, based on scheme one, further comprises a first static porcelain sleeve, a first dynamic porcelain shaft, a second static porcelain sleeve and a second dynamic porcelain shaft; the first cavity is provided with a first slot, and the first static porcelain sleeve is mounted in the first slot; the first dynamic porcelain shaft is mounted in a hole of the first static porcelain sleeve and connected with the first impeller; the second cavity is provided with a second slot, and the second static porcelain sleeve is mounted in the second slot; the second dynamic porcelain shaft is mounted in a hole of the second static porcelain sleeve and connected with the second impeller.

[0010] Scheme four, based on scheme three, further comprises a first wear-resistant pad and a second wear-resistant pad, two ends of the first wear-resistant pad are respectively abutted against a cavity wall of the first cavity and a side of the first impeller away from the first dynamic porcelain shaft, and two ends of the second wear-resistant pad are respectively abutted against a cavity wall of the second cavity and a side of the second impeller away from the second dynamic porcelain shaft.

[0011] Scheme five, based on scheme one, further comprises a sealing ring, a third dynamic porcelain sleeve and a third static porcelain sleeve, the body further comprises a communication hole, two ends of the communication hole are respectively communicated with the first cavity and the second cavity, the third dynamic porcelain sleeve is sleeved on the first impeller or the second impeller, the sealing ring and the third static porcelain sleeve are both sleeved on the third dynamic porcelain sleeve, and an end away from the third dynamic porcelain sleeve is abutted against a hole wall of the communication hole; the sealing ring is a v-shaped or y-shaped sealing ring.

[0012] Scheme six, a shower comprises the suction device according to any one of schemes one to five.

[0013] Scheme seven, based on scheme six, further comprises a switching valve, a temperature adjusting valve and a water tank, a water outlet end of the water tank is communicated with a water inlet end of the second cavity, and the water tank is adapted to store a second medium; a water outlet end of the temperature adjusting valve is communicated with a water inlet end of the switching valve, and a water outlet end of the switching valve is adapted to be communicated with the water inlet end of the water tank or the water outlet cavity.

[0014] Scheme eight, based on scheme seven, an overflow hole is arranged above the water tank.

[0015] Scheme nine, based on scheme eight, further comprises a temperature control switch, which is located at the water inlet end of the water tank and is adapted to block the water inlet end of the water tank when the water temperature is higher than a first threshold value.

[0016] From the above description of the utility model and its preferred embodiments, it can be seen that, compared with the prior art, the technical scheme of the utility model and its preferred embodiments have the following beneficial effects due to the use of the following technical means:

[0017] 1. In Scheme 1 and its preferred embodiments, a suction device includes a body and an impeller assembly. The body has a first chamber, a second chamber, and a water outlet chamber. The first chamber is suitable for flowing with a first medium, and the second chamber is suitable for flowing with a second medium. The second medium and the first medium can be in different states, such as different temperatures (e.g., warm water and residual water) or different materials (e.g., water and cleaning fluid). Of course, in some applications, their states may be the same; for example, if the first chamber contains cold water, the residual water, due to its lower temperature, is also equivalent to cold water. The water outlets of both the first and second chambers are connected to the water inlet of the water outlet chamber, allowing the first and second media to mix at the water outlet chamber for use.

[0018] The first impeller is located in the first chamber and is adapted to rotate when the first medium flows through the first chamber. The first impeller rotates due to the time force exerted on it by the first medium. Since the first and second impellers are connected to prevent each other from rotating, they will drive the second impeller located in the second chamber to rotate. When the second impeller rotates, it is adapted to generate a negative pressure in the second chamber so that the second medium is drawn into the outlet chamber after passing through the second chamber and mixed with the first medium in the outlet chamber, thereby achieving the purpose of drawing the second medium. This method is lower in cost and higher in energy conversion efficiency than electric pumps.

[0019] 2. In Scheme 2 and its preferred embodiments, one of the first impeller and the second impeller is a forward impeller, and the other is a reverse impeller, in order to prevent the problem of low suction efficiency or inability to suction the second medium when the two impellers are in the same direction.

[0020] 3. In Scheme 3 and its preferred embodiments, it further includes a first stationary ceramic sleeve and a first moving ceramic shaft; the first cavity has a first groove, and the first stationary ceramic sleeve is installed in the first groove; the first moving ceramic shaft is installed in the hole of the first stationary ceramic sleeve and connected to the first impeller. The first moving ceramic shaft rotates relative to the first stationary ceramic sleeve. The rotation point, through the cooperation of the ceramic sleeve and the ceramic shaft, can minimize frictional resistance and increase wear resistance, while also preventing water and rust. It also includes a second stationary ceramic sleeve and a second moving ceramic shaft; the second cavity has a second groove, and the second stationary ceramic sleeve is installed in the second groove; the second moving ceramic shaft is installed in the hole of the second stationary ceramic sleeve and connected to the second impeller. The second moving ceramic shaft rotates relative to the second stationary ceramic sleeve. The rotation point, through the cooperation of the ceramic sleeve and the ceramic shaft, can minimize frictional resistance and increase wear resistance, while also preventing water and rust.

[0021] 4. In Scheme 4 and its preferred embodiments, a first wear-resistant pad is further included. The two ends of the first wear-resistant pad abut against the cavity wall of the first chamber and the side of the first impeller facing away from the first moving ceramic shaft, respectively, to reduce friction between the first impeller and the cavity wall of the first chamber and increase service life. A second wear-resistant pad is also included. The two ends of the second wear-resistant pad abut against the cavity wall of the second chamber and the side of the second impeller facing away from the second moving ceramic shaft, respectively, to reduce friction between the first impeller and the cavity wall of the second chamber and increase service life.

[0022] 5. In Scheme 5 and its preferred embodiments, a sealing ring, a third moving ceramic sleeve, and a third stationary ceramic sleeve are also included. The main body also includes a connecting hole, with its two ends connecting to the first cavity and the second cavity, respectively. The third moving ceramic sleeve is fitted onto the first impeller or the second impeller. Both the sealing ring and the third stationary ceramic sleeve are fitted onto the third moving ceramic sleeve, with the end facing away from the third moving ceramic sleeve abutting against the wall of the connecting hole. The third moving ceramic sleeve rotates relative to the sealing ring and the third stationary ceramic sleeve. The rotation is achieved through the cooperation of the ceramic sleeve and the ceramic shaft, which minimizes frictional resistance and increases wear resistance, while also preventing water and rust. The sealing ring prevents crossflow between the first cavity and the second cavity. Furthermore, the sealing ring is a V-shaped or Y-shaped sealing ring, which can achieve high-speed rotation sealing while maintaining low frictional resistance and low starting force.

[0023] Option 6: A shower unit comprising the aforementioned suction device, having the beneficial effects provided by the aforementioned suction device.

[0024] 7. In Scheme 7 and its preferred embodiments, a switching valve, a temperature regulating valve, and a water tank are also included. The outlet of the water tank is connected to the inlet of the second chamber, and the water tank is suitable for storing the second medium. The outlet of the temperature regulating valve is connected to the inlet of the switching valve, and the outlet of the switching valve is suitable for connecting to the inlet or outlet of the water tank. When the outlet of the switching valve is connected to the outlet, the residual water in the water tank can be reused. When the outlet of the switching valve is connected to the inlet of the water tank, the residual water can be recovered.

[0025] 8. In Scheme 7 and its preferred embodiments, an overflow hole is provided above the water tank. When the water level in the water tank reaches this height, water flows out from the overflow hole to prevent the water tank from becoming full.

[0026] 9. In Scheme 8 and its preferred embodiments, a temperature control switch is also included, which is located at the water inlet of the water tank and is adapted to block the water inlet of the water tank when the water temperature is higher than a first threshold, thereby preventing hot water from being recycled as residual water and resulting in waste. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the shower unit in Example 1;

[0029] Figure 2 This is a schematic diagram of the water inlet of the shower in Example 1;

[0030] Figure 3is a schematic view of the water outlet end of the switching valve in example one being in communication with the water outlet cavity, is Figure 4 is a sectional view along the plane B-B in example one;

[0031] Figure 4 is a schematic view of the water outlet end of the switching valve in example one being in communication with the water outlet cavity, is Figure 3 is a sectional view along the plane D-D in example one;

[0032] Figure 5 is a schematic view of the water outlet end of the switching valve in example one being in communication with the water outlet cavity, is Figure 3 is a sectional view along the plane E-E in example one;

[0033] Figure 6 is a schematic view of the temperature control switch in example one;

[0034] Figure 7 is a perspective view of the centrifugal pump in example one;

[0035] Figure 8 is an exploded view of the centrifugal pump in example one;

[0036] Figure 9 is a schematic view of the centrifugal pump in example one;

[0037] Figure 10 is a perspective view of the shower in example one.

[0038] Main figure mark explanation:

[0039] body 1; water outlet cavity 11; pump body 12; first pump cover 13; first groove 131; second pump cover 14; second groove 141; first cavity 15; second cavity 16; limiting ring 17; hot water end 18; cold water end 19; impeller group 2; first impeller 21; second impeller 22; first static porcelain sleeve 31; first dynamic porcelain shaft 32; first wear pad 33; second static porcelain sleeve 41; second dynamic porcelain shaft 42; second wear pad 43; sealing ring 51; third dynamic porcelain sleeve 52; third static porcelain sleeve 53; switching valve 6; temperature control valve 7; water tank 8; temperature control switch 9; paraffin 91; elastic member 92; Specific implementation

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as excluding other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0041] In the claim, description and above drawings of the present application, unless otherwise explicitly limited, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order.

[0042] In the claims, the specification, and the drawings of the present application, terms such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" are used to indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, so it cannot be understood as limiting the specific protection scope of the present application.

[0043] In the claims, the specification, and the drawings of the present application, unless otherwise explicitly defined, the term "fixedly connected" or "fixedly connected" should be understood in a broad sense, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0044] In the claims, the specification, and the drawings of the present application, the terms "include", "have" and their variants are intended to mean "include but not limited to".

[0045] Reference Figures 1-10 A shower includes a suction device, a switching valve 6, a temperature adjusting valve 7 and a water tank 8. The suction device includes a body 1, an impeller set 2, a first static porcelain sleeve 31, a first dynamic porcelain shaft 32, a first wear-resistant pad 33, a second static porcelain sleeve 41, a second dynamic porcelain shaft 42, a second wear-resistant pad 43, a sealing ring 51, a third dynamic porcelain sleeve 52 and a third static porcelain sleeve 53.

[0046] The body 1 is provided with a water outlet cavity 11 and includes a centrifugal pump, referring to Figures 7-9 The centrifugal pump includes a pump body 12, a first pump cover 13 and a second pump cover 14.

[0047] The pump body 12 is provided with a first mounting groove, a communication hole and a second mounting groove, the groove of the first mounting groove and the groove of the second mounting groove are opposite to each other, and the openings at both ends of the communication hole are respectively on the groove bottom of the first mounting groove and the groove bottom of the second mounting groove.

[0048] Reference Figure 9The first pump cover 13 is installed on the pump body 12 and forms a first cavity 15 with the first installation groove. The first cavity 15 is adapted to flow the first medium. The first pump cover 13 is provided with a water outlet end of the first cavity 15. The water outlet end of the first cavity 15 is directed to the left. The side wall of the first installation groove is provided with a water inlet end of the first cavity 15. The water inlet end of the first cavity 15 is directed downward. The first pump cover 13 is further provided with a first groove 131. The groove opening of the first groove 131 is directed to the communication hole.

[0049] The second pump cover 14 is installed on the pump body 12 and forms a second cavity 16 with the second installation groove. The second cavity 16 is adapted to flow the second medium. The second medium and the first medium are different in state, such as temperature, for example, warm water and residual water, or material, for example, water and cleaning liquid. Of course, in some use cases, the state of the two may be the same, for example, when the first cavity 15 is cold water, and the residual water is also equivalent to cold water because the temperature is low.

[0050] The second pump cover 14 is provided with a water inlet end of the second cavity 16. The water inlet end of the second cavity 16 is directed to the left. The side wall of the second installation groove is provided with a water outlet end of the second cavity 16. The water outlet end of the second cavity 16 is directed downward. After the centrifugal pump is installed, the two ends of the communication hole are respectively communicated with the first cavity 15 and the second cavity 16. The second pump cover 14 is further provided with a second groove 141. The groove opening of the second groove 141 is directed to the communication hole.

[0051] Reference Figures 4-5 The water inlet end of the water outlet cavity 11 is adapted to be communicated with the water outlet end of the first cavity 15 and the second cavity 16.

[0052] Reference Figures 7-9 The impeller set 2 includes a first impeller 21 and a second impeller 22 which are rotationally connected to each other. In this embodiment, the two are rotationally connected by screwing. In other embodiments, the two can be rotationally connected by other means, such as the cooperation of a non-circular socket and a plug shaft. In other embodiments, the first impeller 21 and the second impeller 22 can also be connected by an adapter.

[0053] The first impeller 21 is located in the first cavity 15. The part of the first impeller 21 connected to the second impeller 22 extends into the communication hole to rotationally connect with the second impeller 22. The first static ceramic sleeve 31 is installed in the first groove 131. The first dynamic ceramic shaft 32 is installed in the hole of the first static ceramic sleeve 31 and connected with the first impeller 21 to rotate synchronously with the first impeller 21 and relatively to the first static ceramic sleeve. The two ends of the first wear-resistant pad 33 are respectively abutted with the cavity wall of the first cavity 15 and the side of the first impeller 21 away from the first dynamic ceramic shaft 32. The first impeller 21 is adapted to rotate under the action of the first medium when the first medium flows in the first cavity 15, such as the water inlet flow directed to the blades of the first impeller 21, thereby driving the first impeller 21 to rotate.

[0054] The second impeller 22 is located in the second cavity 16, one of the first impeller 21 and the second impeller 22 is a forward impeller, and the other is a reverse impeller, that is, the outlet angle of the blade of the first impeller 21 is greater than 90 degrees, and the top of the blade is inclined to the rotation direction of the first impeller 21, while the outlet angle of the blade of the second impeller 22 is less than 90 degrees, and the top of the blade is opposite to the rotation direction of the second impeller 22. The second static porcelain sleeve 41 is installed in the second groove 141; the second dynamic porcelain shaft 42 is installed in the hole of the second static porcelain sleeve 41 and connected with the second impeller 22 to rotate synchronously with the second impeller 22 to rotate relative to the second static porcelain sleeve 41. The two ends of the second wear-resistant pad 43 abut against the cavity wall of the second cavity 16 and the side of the second impeller 22 away from the second dynamic porcelain shaft 42, respectively. Since the second impeller 22 is connected with the first impeller 21, when the first impeller 21 rotates, the second impeller 22 will be driven to rotate synchronously. When the second impeller 22 rotates, a negative pressure is generated to suck the second medium to flow to the water outlet cavity 11 and mix with the first medium in the water outlet cavity 11.

[0055] The third dynamic porcelain sleeve 52 is sleeved on the first impeller 21 or the second impeller 22 to rotate synchronously with the first impeller 21 or the second impeller 22. In this embodiment, the first impeller 21 is wrapped outside the second impeller 22, so in this embodiment, the third dynamic porcelain sleeve 52 is sleeved on the first impeller 21. The sealing ring 51 and the third static porcelain sleeve 53 are both sleeved on the third dynamic porcelain sleeve 52, and the ends of the sealing ring 51 and the third static porcelain sleeve 53 away from the third dynamic porcelain sleeve 52 abut against the hole wall of the communication hole. The sealing ring 51 and the third static porcelain sleeve 53 are stationary relative to the body 1 during operation. The sealing ring 51 is a v-shaped or y-shaped sealing ring. In this embodiment, the communication hole is a stepped hole, and the centrifugal pump further comprises a limiting ring 17. The limiting ring 17, the sealing ring 51, the third static porcelain sleeve 53 and the stepped wall of the communication hole abut in sequence to limit the installation of the sealing ring 51 and the third static porcelain sleeve 53.

[0056] Reference Figure 4 , Figure 5 The water outlet end of the water tank 8 is communicated with the water inlet end of the second cavity 16, and the water tank 8 is adapted to store the second medium. When the second impeller 22 rotates, the second impeller 22 is adapted to generate a negative pressure in the second cavity 16 to suck the second medium in the water tank 8 to the water outlet cavity 11 through the second cavity 16, thereby playing a role relative to the pump. In this embodiment, the second medium is residual water, that is, the remaining cold water in the suction device after use. The water tank 8 is provided with an overflow hole located above the water tank 8. When the water level in the water tank 8 reaches this height, the water flows out of the overflow hole to prevent the water tank 8 from being full.

[0057] Reference Figure 2 The water inlet end of the temperature regulating valve 7 is communicated with the hot water pipe and the cold water pipe. In this embodiment, the left side is the hot water end, which enters the temperature regulating valve 7. Reference Figure 2 Figure 1 ​、 Figure 2 The outlet of the temperature regulating valve 7 is communicated with the inlet of the switching valve 6 via the first cavity 15. When the switching valve 6 is opened, the outlet of the temperature regulating valve 7 will deliver the first medium to the first cavity 15. The first medium is the temperature-regulated hot water or warm water. In other embodiments, the first cavity 15 can be arranged between the outlet of the switching valve 6 and the outlet cavity 11.

[0058] Reference Figure 3 , Figure 6 The outlet of the switching valve 6 is adapted to be communicated with the inlet of the water tank 8 or the outlet cavity 11. By switching the switching valve 6, it is selected to use which function. The temperature regulating valve 7 and the switching valve 6 are both conventional technical means in the art, and will not be described in detail. When the outlet of the switching valve 6 is adapted to correspond to the inlet of the water tank 8, the residual water between the cold water inlet and the hot water inlet to the switching valve 6 will flow into the water tank 8. The outlet of the switching valve 6 can be only one, and when the switching valve 6 is switched, the position of the outlet changes to be communicated with the inlet of the water tank 8 or the inlet of the outlet cavity 11. The outlet of the switching valve 6 can also be multiple, and correspond to the inlet of the water tank 8 and the inlet of the outlet cavity 11 respectively. When the switching valve 6 is switched, the internal waterway changes, so that the corresponding outlet discharges water.

[0059] Reference Figure 6 The temperature control switch 9 is located at the inlet of the water tank 8, and is adapted to block the inlet of the water tank 8 when the water temperature is higher than the first threshold value, so as to prevent the hot water from being recovered as residual water, causing waste. The temperature control switch 9 can be a combination of paraffin 91 and elastic member 92. The paraffin 91 expands and elongates under heat to compress the elastic member 92 and block the inlet of the water tank 8, and restores under cold to open the inlet of the water tank 8 under the action of the elastic member 92. Of course, other ways are also possible.

[0060] During installation, the first dynamic porcelain shaft 32 is first installed on the first impeller 21, then the third dynamic porcelain sleeve 52 is sleeved on the first impeller 21, and then the first wear-resistant pad 33, the limiting ring 17, the sealing ring 51 and the third static porcelain sleeve 53 are successively sleeved on the third dynamic porcelain sleeve 52, and are together loaded into the pump body 12 from the slot of the first installation slot, until the third static porcelain sleeve 53 abuts against the stepped wall of the communication hole; the first static porcelain sleeve 31 is installed on the first pump cover 13, and the first pump cover 13 is threadedly connected with the pump body 12, the first dynamic porcelain shaft 32 is inserted into the hole of the first static porcelain sleeve 31, the installation of the driving impeller side is completed, and the first impeller 21 is installed in the first cavity 15.

[0061] The second wear pad 43 is sleeved on the third dynamic porcelain sleeve 52, the second dynamic porcelain shaft 42 is installed on the second impeller 22, and is loaded into the pump body 12 through the second installation slot and is screwed with the first impeller 21. The second static porcelain sleeve 41 is installed on the second pump cover 14, and the second pump cover 14 is screwed with the pump body 12, the second dynamic porcelain shaft 42 is inserted into the hole of the second static porcelain sleeve 41, the installation of the driven impeller side is completed, and the second impeller 22 is installed in the second cavity 16.

[0062] The two water inlet ends of the temperature regulating valve 7 are communicated with the cold water section and the hot water section, the water outlet end of the temperature regulating valve 7 is communicated with the water inlet end of the first cavity 15, the water outlet end of the first cavity 15 is communicated with the water inlet end of the switching valve 6, the water outlet end of the switching valve 6 is communicated with the water inlet end of the water tank 8 or the water inlet end of the water outlet cavity 11, the water outlet end of the water tank 8 is communicated with the water inlet end of the second cavity 16, and the water outlet end of the second cavity 16 is communicated with the water inlet end of the water outlet cavity 11, that is, the overall installation is completed. When in use, the temperature regulating valve 7 is first opened, and the switching valve 6 is operated to correspond the water outlet end of the switching valve 6 to the water inlet end of the water tank 8, at this time, the residual water in the water paths from the cold water inlet end and the hot water inlet end to the switching valve 6 flows into the water tank 8 for recovery.

[0063] Then the switching valve 6 is operated to correspond the water outlet end of the switching valve 6 to the water outlet cavity 11, water flows through the first cavity 15 to generate water pressure, the first impeller 21 in the first cavity 15 is impacted to start rotating, the second impeller 22 is driven by the first impeller 21 to rotate synchronously, a negative pressure is formed in the second cavity 16, the residual water in the water tank 8 is sucked up, the residual water enters the water outlet cavity 11 after passing through the second cavity 16, and is mixed with the warm water or hot water in the water outlet cavity 11, and finally flows out for use by the user.

[0064] In an exemplary embodiment, a suction device includes a body 1 and an impeller group 2. The body 1 is provided with a first cavity 15, a second cavity 16 and a water outlet cavity 11, the first cavity 15 is suitable for flowing through a first medium, the second cavity 16 is suitable for flowing through a second medium, the state of the second medium and the first medium can be different, such as temperature difference, such as warm water and residual water, material difference, such as water and cleaning liquid, and of course, in part of the use case, the state of the two can be the same, such as cold water in the first cavity 15, and the residual water is also equivalent to cold water because of the low temperature. The water outlet ends of the first cavity 15 and the second cavity 16 are communicated with the water inlet end of the water outlet cavity 11, so that the first medium and the second medium are allowed to mix at the water outlet cavity 11, thereby being used.

[0065] The first impeller 21 is located in the first cavity 15, and the first impeller 21 is adapted to rotate when the first medium flows through the first cavity 15. The first impeller 21 is driven to rotate by the time effect force of the first medium flow. Since the first impeller 21 and the second impeller 22 are connected to each other, the second impeller 22 located in the second cavity 16 is driven to rotate. When the second impeller 22 rotates, the negative pressure is generated in the second cavity 16 to suck the second medium through the second cavity 16 to the water outlet cavity 11, and the second medium is mixed with the first medium in the water outlet cavity 11, so that the purpose of sucking the second medium is achieved. Compared with the electric pump, the cost is lower, and the energy conversion efficiency is higher.

[0066] In an exemplary embodiment, one of the first impeller 21 and the second impeller 22 is a forward impeller, and the other is a reverse impeller, so as to prevent the problem of low suction efficiency or inability to suck the second medium when the two impellers rotate in the same direction.

[0067] In an exemplary embodiment, the first static ceramic sleeve 31 and the first dynamic ceramic shaft 32 are further included. The first cavity 15 is provided with a first groove 131, and the first static ceramic sleeve 31 is installed in the first groove 131. The first dynamic ceramic shaft 32 is installed in the hole of the first static ceramic sleeve 31 and connected with the first impeller 21. The first dynamic ceramic shaft 32 rotates relative to the first static ceramic sleeve 31. The rotation is matched by the ceramic sleeve and the ceramic shaft, which can maximize the reduction of friction resistance and increase wear resistance, and prevent water rust at the same time.

[0068] In an exemplary embodiment, the first wear-resistant pad 33 is further included. The two ends of the first wear-resistant pad 33 are respectively abutted with the cavity wall of the first cavity 15 and the side of the first impeller 21 away from the first dynamic ceramic shaft 32, so as to reduce the friction between the first impeller 21 and the cavity wall of the first cavity 15 and increase the service life.

[0069] In an exemplary embodiment, the second static ceramic sleeve 41 and the second dynamic ceramic shaft 42 are further included. The second cavity 16 is provided with a second groove 141, and the second static ceramic sleeve 41 is installed in the second groove 141. The second dynamic ceramic shaft 42 is installed in the hole of the second static ceramic sleeve 41 and connected with the second impeller 22. The second dynamic ceramic shaft 42 rotates relative to the second static ceramic sleeve 41. The rotation is matched by the ceramic sleeve and the ceramic shaft, which can maximize the reduction of friction resistance and increase wear resistance, and prevent water rust at the same time.

[0070] In an exemplary embodiment, the second wear-resistant pad 43 is further included. The two ends of the second wear-resistant pad 43 are respectively abutted with the cavity wall of the second cavity 16 and the side of the second impeller 22 away from the second dynamic ceramic shaft 42, so as to reduce the friction between the first impeller 21 and the cavity wall of the second cavity 16 and increase the service life.

[0071] In an exemplary embodiment, the sealing ring 51, the third movable ceramic sleeve 52 and the third stationary ceramic sleeve 53 are further included, the body 1 further includes a communication hole, two ends of the communication hole are communicated with the first cavity 15 and the second cavity 16 respectively, the third movable ceramic sleeve 52 is sleeved on the first impeller 21 or the second impeller 22, the sealing ring 51 and the third stationary ceramic sleeve 53 are both sleeved on the third movable ceramic sleeve 52, and one end away from the third movable ceramic sleeve 52 is abutted against the hole wall of the communication hole, the third movable ceramic sleeve 52 rotates relative to the sealing ring 51 and the third stationary ceramic sleeve 53, the rotation is through the cooperation of the ceramic sleeve and the ceramic shaft, which can maximize the reduction of friction resistance and the increase of wear resistance, and at the same time, water rust is prevented, and the sealing ring 51 prevents the first cavity 15 and the second cavity 16 from flowing together. In addition, the sealing ring 51 is a v-shaped or y-shaped sealing ring, which can rotate at high speed while having small friction resistance and small starting force.

[0072] In an exemplary embodiment, a shower includes the suction device described above, and has the beneficial effects brought by the suction device.

[0073] In an exemplary embodiment, the switching valve 6, the temperature adjusting valve 7 and the water tank 8 are further included, the water outlet of the water tank 8 is communicated with the water inlet of the second cavity 16, and the water tank 8 is adapted to store the second medium; the water outlet of the temperature adjusting valve 7 is communicated with the water inlet of the switching valve 6, and the water outlet of the switching valve 6 is adapted to be communicated with the water inlet of the water tank 8 or the water outlet cavity 11, when the water outlet of the switching valve 6 is correspondingly communicated with the water outlet cavity 11, the residual water in the water tank 8 can be reused, and when the water outlet of the switching valve 6 is correspondingly communicated with the water inlet of the water tank 8, the residual water can be recycled.

[0074] In an exemplary embodiment, an overflow hole is arranged above the water tank 8, when the water level in the water tank 8 reaches the height, the water flows out from the overflow hole, so as to prevent the water tank 8 from being full.

[0075] In an exemplary embodiment, the temperature control switch 9 is further included, which is arranged at the water inlet of the water tank 8, and is adapted to block the water inlet of the water tank 8 when the water temperature is higher than a first threshold, so as to prevent the hot water from being recycled as residual water, thereby causing waste.

[0076] The above description and embodiment are used to explain the protection scope of the present application, but do not constitute the limitation of the protection scope of the present application. Through the inspiration of the present application or the above embodiment, the modification, equivalent replacement or other improvement of the present application embodiment or part of the technical features can be obtained by the ordinary skilled in the art combining with the common knowledge, the ordinary technical knowledge in the art and / or the prior art through logical analysis, reasoning or limited test, which should be included in the protection scope of the present application.

Claims

1. A suction device, characterized by: The body (1) is provided with a first cavity (15) adapted to flow a first medium, a second cavity (16) adapted to flow a second medium, and a water outlet cavity (11), the water outlet ends of the first cavity (15) and the second cavity (16) are communicated with the water inlet end of the water outlet cavity (11); The impeller set (2) comprises a first impeller (21) and a second impeller (22) connected with each other in rotation, the first impeller (21) is located in the first cavity (15), the second impeller (22) is located in the second cavity (16), the first impeller (21) is adapted to rotate when the first medium flows in the first cavity (15) to drive the second impeller (22) to rotate, the second impeller (22) is adapted to generate negative pressure in the second cavity (16) when rotating to suck the second medium into the water outlet cavity (11) and mix with the first medium in the water outlet cavity (11). One of the first impeller (21) and the second impeller (22) is a forward impeller, and the other is a reverse impeller.

2. A suction device as claimed in claim 1, characterised in that: The first static porcelain sleeve (31), the first dynamic porcelain shaft (32), the second static porcelain sleeve (41), and the second dynamic porcelain shaft (42) are further included; the first cavity (15) is provided with a first groove (131), and the first static porcelain sleeve (31) is installed in the first groove (131); the first dynamic porcelain shaft (32) is installed in the hole of the first static porcelain sleeve (31) and connected with the first impeller (21); the second cavity (16) is provided with a second groove (141), and the second static porcelain sleeve (41) is installed in the second groove (141); the second dynamic porcelain shaft (42) is installed in the hole of the second static porcelain sleeve (41) and connected with the second impeller (22).

3. A suction device as claimed in claim 1, characterised in that: The first wear-resistant pad (33) and the second wear-resistant pad (43) are further included, two ends of the first wear-resistant pad (33) are respectively abutted with the cavity wall of the first cavity (15) and the side of the first impeller (21) away from the first dynamic porcelain shaft (32), and two ends of the second wear-resistant pad (43) are respectively abutted with the cavity wall of the second cavity (16) and the side of the second impeller (22) away from the second dynamic porcelain shaft (42).

4. A suction device as claimed in claim 3, characterised in that: The sealing ring (51), the third dynamic porcelain sleeve (52), and the third static porcelain sleeve (53) are further included, the body (1) further comprises a communication hole, two ends of the communication hole are respectively communicated with the first cavity (15) and the second cavity (16), the third dynamic porcelain sleeve (52) is sleeved on the first impeller (21) or the second impeller (22), the sealing ring (51) and the third static porcelain sleeve (53) are both sleeved on the third dynamic porcelain sleeve (52), and one end away from the third dynamic porcelain sleeve (52) is abutted with the hole wall of the communication hole; the sealing ring (51) is a v-shaped or y-shaped sealing ring.

5. A suction device as claimed in claim 1, characterized in that: The application further provides a suction device comprising the suction device according to any one of claims 1-5.

6. A shower characterized in that: ​ 7. A shower according to claim 6 wherein: The water tank (8) is provided with an overflow hole.

8. A shower according to claim 7 wherein: A temperature control switch (9) is further included, which is located at the water inlet end of the water tank (8) and is adapted to block the water inlet end of the water tank (8) when the water temperature is higher than a first threshold value.

9. A shower according to claim 8 wherein: ​

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