Evacuation-preventing water draining structure for thermos bottle and thermos bottle with evacuation-preventing water draining structure

Abstract

The utility model discloses an anti-evacuation drainage structure for the thermos bottle and the thermos bottle, the drainage structure comprises an inner container and a centrifugal pump arranged below the inner container, the centrifugal pump comprises a front shell, an impeller arranged in the front shell and a driving motor in transmission connection with the impeller, a pump cavity is formed in the front shell, and the pump cavity is communicated with the inner container. The impeller is rotationally arranged in the pump cavity and is coaxial with the front shell; a water inlet perpendicular to the axis of the front shell is further formed in one end of the front shell, a water inlet channel is formed in the water inlet, and the water inlet channel is communicated with the water outlet hole and the pump cavity. In addition, an exhaust structure is further included, and the exhaust structure is used for communicating the pump cavity with the interior of the inner container and / or communicating the pump cavity with the water inlet channel. Therefore, the exhaust structure is arranged between the front shell and the inner container and / or between the front shell and the water inlet, water vapor in the pump cavity can be exhausted into the inner container and / or the water inlet channel through the exhaust structure, and it is guaranteed that the centrifugal pump can work normally to achieve smooth water outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of water bottles, in particular to an anti-evacuation water discharge structure for a water bottle and a water bottle having the same. Background Art

[0002] This section only provides background information related to the present application to help those skilled in the art understand the present application more thoroughly and accurately, and it is not necessarily prior art.

[0003] The existing centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller. When the impeller in the centrifugal pump is driven by the motor to rotate, the fluid filled between the blades will rotate with the impeller. Under the action of centrifugal force, the fluid will be thrown out from the grooves between the blades and discharged from the water outlet on the pump shell. The outflow of the fluid will cause a vacuum to form in the impeller inlet space, and the external fluid will be automatically sucked into the impeller for replenishment under the action of atmospheric pressure. Since the centrifugal pump works continuously, the fluid is sucked in and discharged, forming a continuous flow of the fluid, thereby continuously transporting the fluid.

[0004] When a centrifugal pump is used on a kettle, the water in the kettle rotates with the impeller. Under high-speed rotation, the water begins to boil and produce water vapor. The density of the water vapor decreases and is less affected by the centrifugal force. It cannot be discharged from the water outlet on the outer casing along with the water flow, thus forming an air binding phenomenon. Negative pressure is formed at the top of the impeller, and the water flow cannot be sucked in to replenish, resulting in a vacuum phenomenon, which leads to uneven water flow or interruption of flow. Utility Model Content

[0005] In order to overcome the defects described in the above-mentioned prior art, the utility model provides an anti-evacuation water discharge structure for a water bottle and a water bottle having the same. By arranging an exhaust structure between the front shell and the water inlet and / or between the front shell and the inner liner, the water vapor accumulated in the pump chamber can be discharged into the water inlet channel and / or the inner liner through the exhaust structure, thereby avoiding the occurrence of air binding, and then ensuring that the centrifugal pump can work normally to achieve smooth water discharge.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A water-opening anti-evacuation structure for a water bottle, comprising:

[0008] The inner tank has a water outlet at the bottom;

[0009] A centrifugal pump is arranged below the inner tank; the centrifugal pump comprises a front housing, an impeller arranged in the front housing, and a driving motor drivingly connected to the impeller, a pump chamber is formed inside the front housing, the impeller is rotatably arranged in the pump chamber and is coaxially arranged with the front housing; one end of the front housing is also provided with a water inlet arranged perpendicularly to its axis, a water inlet channel is formed inside the water inlet, and the water inlet channel is respectively connected to the water outlet and the pump chamber;

[0010] Among them, it also includes an exhaust structure, which is used to connect the pump chamber with the interior of the inner tank to discharge the water vapor in the pump chamber into the interior of the inner tank; and / or to connect the pump chamber with the water inlet channel to discharge the water vapor in the pump chamber into the water inlet channel.

[0011] Furthermore, the exhaust structure is a first exhaust hole opened on the front shell and connected to the pump chamber, a first through hole opened on the inner tank and connected to the interior thereof, and a first exhaust pipe respectively connected to the first exhaust hole and the first through hole.

[0012] Furthermore, the first exhaust hole is located at the top of the pump chamber and is arranged close to the front end of the impeller, and the first exhaust hole is located outside the water inlet; the first through hole is opened at the bottom of the inner tank.

[0013] Furthermore, the exhaust structure is a second exhaust hole opened on the front shell and connected to the pump chamber, a second through hole opened on the water inlet and connected to the water inlet channel, and a second exhaust pipe respectively connected to the second exhaust hole and the second through hole.

[0014] Furthermore, the second exhaust hole is located at the top of the pump chamber and is arranged close to the front end of the impeller, and the first exhaust hole is located outside the water inlet; the second through hole is opened on the side of the water inlet.

[0015] Furthermore, the exhaust structure is a third exhaust hole which is opened on the front shell and is connected to the pump chamber and the water inlet channel respectively.

[0016] Furthermore, the front housing has an extending portion that partially extends into the water inlet, and the third exhaust hole is opened on the extending portion; the third exhaust hole is located at the top of the pump chamber and is arranged close to the front end of the impeller.

[0017] Furthermore, the centrifugal pump also includes a rear casing connected to the other end of the front casing, and an installation cavity is formed at one end of the rear casing close to the front casing. The drive motor is installed at the other end of the rear casing away from the front casing, and the output shaft of the drive motor extends into the installation cavity and is used for transmission connection with the impeller.

[0018] Furthermore, it also includes an active magnetic block sleeved on the output shaft and located in the mounting cavity, and a driven magnetic block arranged in the impeller and adsorbed with the active magnetic block; when the drive motor is started and the output shaft is driven to rotate, the impeller can be driven to rotate through the adsorption and cooperation between the active magnetic block and the driven magnetic block.

[0019] Furthermore, it also includes a partition plate which is arranged between the front shell and the rear shell and separates the pump chamber from the installation chamber. A shaft body is provided on one end of the partition plate close to the front shell. The impeller is sleeved on the shaft body and can rotate around the shaft body.

[0020] Furthermore, it also includes a first sealing ring arranged between the partition and the front shell and / or a second sealing ring arranged between the partition and the rear shell, wherein:

[0021] When the front shell is connected to the rear shell, the first sealing ring abuts against the front shell and the partition respectively to achieve waterproof sealing and / or the second sealing ring abuts against the rear shell and the partition respectively to achieve waterproof sealing.

[0022] Furthermore, it also includes a water inlet pipe arranged at the water outlet of the inner tank and connected to the water inlet, and the water inlet pipe is coaxially arranged with the water inlet.

[0023] In addition, the utility model also provides a water bottle, comprising a shell and the above-mentioned anti-evacuation water discharge structure and a water outlet pipe arranged in the shell, wherein:

[0024] The side of the front housing is also provided with a water outlet arranged perpendicularly to the axis thereof, and the water outlet is arranged perpendicularly to the water inlet; a water outlet channel communicating with the pump chamber is formed inside the water inlet;

[0025] The water outlet pipe is connected to the water outlet.

[0026] To sum up, the utility model provides an anti-evacuation water discharge structure for a water bottle and a water bottle having the same, by arranging an exhaust structure between the front shell and the water inlet and / or between the front shell and the inner liner, so that the water vapor accumulated in the pump chamber can be discharged into the water inlet channel and / or the inner liner through the exhaust structure, thereby avoiding the occurrence of air binding, and then ensuring that the centrifugal pump can work normally to achieve smooth water discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the anti-evacuation water discharge structure for a water bottle according to the first embodiment of the utility model;

[0028] Figure 2This is a schematic diagram of an explosion of an anti-evacuation water discharge structure for a water bottle according to a first embodiment of the utility model;

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the front housing of a centrifugal pump;

[0030] Figure 4 for Figure 1 Explosion diagram of the centrifugal pump;

[0031] Figure 5 for Figure 1 A cross-sectional diagram of a centrifugal pump;

[0032] Figure 6 This is a schematic diagram of the structure of the anti-evacuation water discharge structure for a water bottle according to the second embodiment of the utility model;

[0033] Figure 7 for Figure 6 A cross-sectional diagram of a centrifugal pump;

[0034] Figure 8 This is a schematic diagram of the structure of the anti-evacuation water discharge structure for a water bottle according to the third embodiment of the utility model;

[0035] Fig. 9 for Figure 8 A cross-sectional diagram of a centrifugal pump;

[0036] Fig.10 It is a partial structural schematic diagram of a water bottle according to a fourth embodiment of the utility model.

[0037] The meanings of the reference numerals are as follows:

[0038] 1. Anti-empty water structure; 11. Inner tank; 111. Water outlet hole; 112. First through hole; 12. Water inlet pipe; 13. Centrifugal pump; 131. Front housing; 1311. Pump chamber; 1312. Water inlet; 13121. Water inlet channel; 13122. Second through hole; 1313. Water outlet; 13131. Water outlet channel; 1314. First exhaust pipe; 1315. First exhaust hole; 1316. First mounting hole; 1317. Second exhaust pipe; 131 8. Second exhaust hole; 1319. Insertion portion; 13191. Third exhaust hole; 132. Impeller; 133. Rear housing; 1331. Mounting cavity; 1332. Second mounting hole; 1333. Third mounting hole; 134. Driving motor; 1341. Output shaft; 1342. Fourth mounting hole; 135. Partition; 1351. Shaft body; 136. First sealing ring; 137. Active magnetic block; 138. Locking screw; 139. Driven magnetic block; 2. Water outlet pipe. DETAILED DESCRIPTION

[0039] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] Embodiment 1

[0043] See also Figure 1-5 The utility model provides an anti-evacuation water discharge structure 1 for a water bottle, comprising an inner liner 11 and a centrifugal pump 13 arranged below the inner liner 11, the centrifugal pump 13 comprising a front housing 131, an impeller 132 arranged in the front housing 131 and a driving motor 134 connected to the impeller 132 in a transmission manner, a pump cavity 1311 is formed inside the front housing 131, the impeller 132 is rotatably arranged in the pump cavity 1311 and is coaxially arranged with the front housing 131; the front end of the front housing 131 is also A water inlet 1312 is provided which is perpendicular to its axis, and a water inlet channel 13121 is formed inside the water inlet 1312. The water inlet channel 13121 is respectively connected to the water outlet hole 111 and the pump chamber 1311; a water outlet 1313 is provided on the side of the front shell 131 which is perpendicular to its axis, and the water outlet 1313 and the water inlet 1312 are perpendicular to each other; a water outlet channel 13131 which is connected to the pump chamber 1311 is formed inside the water outlet 1313.

[0044] Therefore, during the normal operation of the centrifugal pump 13, by driving the impeller 132 to rotate, the impeller 132 rotates to form a negative pressure in the pump chamber 1311, and the water in the inner tank 11 can be discharged from the water outlet 111 and enter the pump chamber 1311 through the water inlet channel 13121. At the same time, under the action of the centrifugal force of the impeller 132, the water in the pump chamber 1311 can be discharged through the water outlet channel 13131.

[0045] In this embodiment, a water inlet pipe 12 is also provided at the water outlet 111 at the bottom of the inner tank 11. The other end of the water inlet pipe 12 is connected to the water inlet 1312 and the two are coaxially arranged. The water in the inner tank 11 can enter the water inlet 1312 through the water inlet pipe 12.

[0046] It should be noted that when the centrifugal pump 13 is applied to a water bottle, since the inner liner 11 of the water bottle contains boiling water, when the boiling water rotates together with the impeller 132, the boiling water begins to boil and produces water vapor under high-speed rotation, and the density of the water vapor decreases, and the water vapor is less affected by the centrifugal force. It is easy to accumulate at the top of the pump chamber 1311 and cannot be discharged from the water outlet channel 13131 along with the water flow, thereby forming an air binding phenomenon. Therefore, in order to solve the above phenomenon, the present application also provides an exhaust structure between the front housing 131 and the inner liner 11, and the pump chamber 1311 is connected to the inside of the inner liner 11 through the exhaust structure to discharge the accumulated water vapor in the pump chamber 1311 to the inside of the inner liner 11, thereby avoiding the occurrence of the air binding phenomenon, and then ensuring smooth water discharge.

[0047] For details, see Figure 2-5 The exhaust structure includes a first exhaust hole 1315 provided on the front housing 131 and connected to the pump chamber 1311, a first through hole 112 provided on the inner tank 11 and connected to the interior thereof, and a first exhaust pipe 1314 respectively connected to the first exhaust hole 1315 and the first through hole 112. Thus, the water vapor accumulated inside the pump chamber 1311 can be discharged into the first exhaust pipe 1314 through the first exhaust hole 1315, and then discharged into the inner tank 11 through the first exhaust pipe 1314 and the first through hole 112, thereby ensuring that the centrifugal pump 13 can work normally to achieve smooth water discharge.

[0048] It is understandable that when the impeller 132 rotates, a negative pressure is formed at the front end of the impeller 132 and water vapor is accumulated in the top area of ​​the pump chamber 1311. Therefore, in order to quickly discharge the accumulated water vapor at this position, preferably, the first exhaust hole 1315 of the present application is located at the top of the pump chamber 1311 and close to the front end of the impeller 132, so that the accumulated water vapor inside the pump chamber 1311 can be quickly discharged through the first exhaust hole 1315, thereby achieving rapid exhaust; similarly, in order to shorten the exhaust path, the present application opens the first through hole 112 at the bottom of the inner tank 11, thereby shortening the setting length of the first exhaust pipe 1314, thereby improving the exhaust efficiency.

[0049] Of course, in other embodiments, the first through hole 112 may be opened on the side of the inner tank 11, or the first exhaust pipe 1314 may be directly extended upward and connected to the top of the inner tank 11, both of which can achieve steam exhaust and are not limited here.

[0050] Furthermore, in the present application, the first exhaust hole 1315 is located outside the water inlet 1312. In order to further simplify the structure, the first exhaust hole 1315 can also be set inside the water inlet 1312, and the first exhaust pipe 1314 passes through the water outlet hole 111 and extends to the inside of the inner tank 11, so that there is no need to open the first through hole 112 at the bottom of the inner tank 11, thereby making the structure more compact, and there is no restriction here.

[0051] See also Figure 3-5 The centrifugal pump 13 further includes a rear housing 133 connected to the rear end of the front housing 131 and a driving motor 134 installed at the rear end of the rear housing 133. The front end of the rear housing 133 is formed with a mounting cavity 1331. The output shaft 1341 of the driving motor 134 extends into the mounting cavity 1331 and is used for transmission connection with the impeller 132. Specifically, it also includes an active magnetic block 137 sleeved on the output shaft 1341 and located in the mounting cavity 1331, and a driven magnetic block 139 disposed in the impeller 132 and adsorbed with the active magnetic block 137. When the driving motor 134 is started and the output shaft 1341 is driven to rotate, the impeller 132 can be driven to rotate by the adsorption and cooperation between the active magnetic block 137 and the driven magnetic block 139.

[0052] Specifically, the front shell 131 is rectangular and has four corners with first mounting holes 1316. Correspondingly, the rear shell 133 is provided with second mounting holes 1332 corresponding to the first mounting holes 1316. Thus, the connection between the front shell 131 and the rear shell 133 can be achieved by passing a locking screw 138 through the first mounting hole 1316 and fixing it in the second mounting hole 1332. Preferably, the first mounting hole 1316 is a through hole, and the second mounting hole 1332 is a screw hole.

[0053] Similarly, the rear shell 133 is also provided with a third mounting hole 1333 located in the mounting cavity 1331, and the drive motor 134 is provided with a fourth mounting hole 1342 at a position corresponding to the third mounting hole 1333; thus, the connection between the rear shell 133 and the drive motor 134 can be achieved by passing a locking screw 138 through the third mounting hole 1333 and fixing it in the fourth mounting hole 1342; preferably, the third mounting hole 1333 is a through hole, and the fourth mounting hole 1342 is a screw hole.

[0054] Furthermore, it also includes a partition 135 disposed between the front housing 131 and the rear housing 133 and used to separate the pump chamber 1311 from the installation chamber 1331. The front end of the partition 135 is integrally formed with a shaft 1351. The impeller 132 is sleeved on the shaft 1351 and can rotate around the shaft 1351. In addition, it also includes a first sealing ring 136 disposed between the front end of the partition 135 and the rear end of the front housing 131. When the front housing 131 is connected to the rear housing 133, the upper and lower ends of the first sealing ring 136 are respectively in contact with the front housing 131 and the partition 135 to achieve waterproof sealing, thereby preventing water from entering the rear housing 133.

[0055] Of course, in other embodiments, a second sealing ring may be further provided between the rear end of the partition 135 and the front end of the rear shell 133. When the front shell 131 is connected to the rear shell 133, the second sealing ring abuts against the rear shell 133 and the partition 135 respectively to achieve a waterproof seal, thereby further improving the waterproof performance of the centrifugal pump 13.

[0056] Embodiment 2

[0057] See also Figure 6-7 The difference between the anti-evacuation water discharge structure 1 in this embodiment and the first embodiment is that the exhaust structure is different. In this embodiment, the exhaust structure is arranged between the front housing 131 and the water inlet 1312, and the water vapor accumulated in the pump chamber 1311 can be discharged into the water inlet channel 13121 through the exhaust structure, thereby avoiding the occurrence of air binding and ensuring smooth water discharge.

[0058] Specifically, the exhaust structure includes a second exhaust hole 1318 provided on the front housing 131 and connected to the pump chamber 1311, a second through hole 13122 provided on the water inlet 1312 and connected to the water inlet channel 13121, and a second exhaust pipe 1317 respectively connected to the second exhaust hole 1318 and the second through hole 13122. Thus, the water vapor accumulated inside the pump chamber 1311 can be discharged into the second exhaust pipe 1317 through the second exhaust hole 1318, and then discharged into the water inlet 1312 through the second exhaust pipe 1317 and the second through hole 13122, thereby ensuring that the centrifugal pump 13 can work normally to achieve smooth water discharge.

[0059] Similarly, preferably, the second exhaust hole 1318 is located at the top of the pump chamber 1311 and is close to the front end of the impeller 132, the second through hole 13122 is opened at the side of the water inlet 1312, and the second exhaust pipe 1317 is arranged obliquely and connects the second exhaust hole 1318 with the second through hole 13122. Such an arrangement greatly reduces the exhaust path, thereby improving the exhaust efficiency.

[0060] In this embodiment, the first exhaust hole 1315 is also located outside the water inlet 1312 .

[0061] Embodiment 3

[0062] See also Figure 8-9 The difference between the anti-evacuation water discharge structure 1 in this embodiment and the second embodiment is that the location of the exhaust hole is different. In this embodiment, the exhaust structure is a third exhaust hole 13191 opened on the front housing 131 and connected to the pump chamber 1311 and the water inlet channel 13121, that is, the third exhaust hole 13191 is located inside the water inlet 1312.

[0063] Specifically, the front housing 131 further includes an extending portion 1319 partially extending into the water inlet 1312, and the third exhaust hole 13191 is a through hole provided on the extending portion 1319, and the opening of the through hole is arranged upward. Such an arrangement makes the overall structure of the front housing 131 more compact and smaller in size, thereby further reducing the cost.

[0064] In this embodiment, one through hole is provided; of course, in other embodiments, multiple through holes may be provided to improve the exhaust efficiency, which is not limited here.

[0065] It is understandable that if the aperture of the through hole is large, when the boiling water enters the pump chamber 1311 through the water inlet channel 13121, part of the boiling water will also enter the pump chamber 1311 through the through hole, thereby blocking the exhaust steam; similarly, if the aperture of the through hole is small, its exhaust efficiency is correspondingly low, resulting in unsmooth exhaust steam. Therefore, in order to better achieve exhaust steam, the aperture size of the through hole needs to be limited. Preferably, the aperture size of the through hole is 2 to 5 mm.

[0066] Therefore, the water vapor accumulated inside the pump chamber 1311 can be directly discharged into the water inlet channel 13121 through the third exhaust hole 13191, thereby ensuring that the centrifugal pump 13 can work normally to achieve smooth water discharge.

[0067] Embodiment 4

[0068] See also Fig.10 The utility model further provides a water bottle, comprising the anti-evacuation water discharge structure 1 and a water outlet pipe 2 of the above-mentioned embodiment 1, wherein the water outlet pipe 2 is connected to the water outlet 1313 on the front shell body 131.

[0069] Therefore, when the centrifugal pump 13 is started, the boiled water in the inner tank 11 can be pumped out and flow out through the water inlet pipe 12, the water inlet 1312, the pump chamber 1311, the water outlet 1313 and the water outlet pipe 2 in sequence for the user to drink.

[0070] In summary, the utility model provides an anti-evacuation water discharge structure 1 for a water bottle and a water bottle having the same. By arranging an exhaust structure between the front shell 131 and the water inlet 1312 and / or between the front shell 131 and the inner liner 11, the water vapor accumulated in the pump chamber 1311 can be discharged into the water inlet channel 13121 and / or the inner liner 11 through the exhaust structure, thereby avoiding the occurrence of air binding, and further ensuring that the centrifugal pump 13 can work normally to achieve smooth water discharge.

[0071] It should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0072] In addition, in the description of the present utility model, "plurality" and "several" mean two or more than two, unless otherwise clearly and specifically defined.

[0073] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A water bottle anti-evacuation water discharge structure, characterized in that: include: The inner tank has a water outlet at the bottom; A centrifugal pump is arranged below the inner tank; the centrifugal pump comprises a front housing, an impeller arranged in the front housing, and a driving motor drivingly connected to the impeller, a pump chamber is formed inside the front housing, the impeller is rotatably arranged in the pump chamber and is coaxially arranged with the front housing; one end of the front housing is also provided with a water inlet arranged perpendicularly to its axis, a water inlet channel is formed inside the water inlet, and the water inlet channel is respectively connected to the water outlet and the pump chamber; Among them, it also includes an exhaust structure, which is used to connect the pump chamber with the interior of the inner tank to discharge the water vapor in the pump chamber into the interior of the inner tank; and / or to connect the pump chamber with the water inlet channel to discharge the water vapor in the pump chamber into the water inlet channel.

2. The anti-evacuation water discharge structure for a water bottle according to claim 1, characterized in that: The exhaust structure includes a first exhaust hole opened on the front shell and connected to the pump chamber, a first through hole opened on the inner shell and connected to the interior thereof, and a first exhaust pipe respectively connected to the first exhaust hole and the first through hole.

3. The anti-evacuation water discharge structure for a water bottle according to claim 2, characterized in that: The first exhaust hole is located at the top of the pump chamber and is close to the front end of the impeller, and the first exhaust hole is located outside the water inlet; the first through hole is opened at the bottom of the inner tank.

4. The anti-evacuation water discharge structure for a water bottle according to claim 2, characterized in that: The exhaust structure includes a second exhaust hole opened on the front housing and connected to the pump chamber, a second through hole opened on the water inlet and connected to the water inlet channel, and a second exhaust pipe respectively connected to the second exhaust hole and the second through hole.

5. The anti-evacuation water discharge structure for a water bottle according to claim 4, characterized in that: The second exhaust hole is located at the top of the pump chamber and is close to the front end of the impeller, and the first exhaust hole is located outside the water inlet; the second through hole is opened on the side of the water inlet.

6. The anti-evacuation water discharge structure for a water bottle according to claim 1, characterized in that: The exhaust structure is a third exhaust hole which is opened on the front shell and is connected to the pump chamber and the water inlet channel respectively.

7. The anti-evacuation water discharge structure for a water bottle according to claim 6, characterized in that: The front housing has an extending portion that partially extends into the water inlet, and the third exhaust hole is arranged on the extending portion; the third exhaust hole is located at the top of the pump chamber and is arranged close to the front end of the impeller.

8. The anti-evacuation water discharge structure for a water bottle according to any one of claims 1 to 7, characterized in that: The centrifugal pump also includes a rear housing connected to the other end of the front housing, and an installation cavity is formed at one end of the rear housing close to the front housing. The drive motor is installed at the other end of the rear housing away from the front housing, and the output shaft of the drive motor extends into the installation cavity and is used for transmission connection with the impeller.

9. The anti-evacuation water discharge structure for a water bottle according to claim 8, characterized in that: It also includes an active magnetic block which is sleeved on the output shaft and located in the mounting cavity, and a driven magnetic block which is arranged in the impeller and adsorbed to the active magnetic block; when the drive motor is started and the output shaft is driven to rotate, the impeller can be driven to rotate through the adsorption and cooperation between the active magnetic block and the driven magnetic block.

10. The anti-evacuation water discharge structure for a water bottle according to claim 8, characterized in that: It also includes a partition plate which is arranged between the front housing and the rear housing and separates the pump chamber from the installation chamber. An axis body is arranged on one end of the partition plate close to the front housing. The impeller is sleeved on the axis body and can rotate around the axis body.

11. The anti-evacuation water discharge structure for a water bottle according to claim 10, characterized in that: It also includes a first sealing ring disposed between the partition and the front housing and / or a second sealing ring disposed between the partition and the rear housing, wherein: When the front shell is connected to the rear shell, the first sealing ring abuts against the front shell and the partition respectively to achieve waterproof sealing and / or the second sealing ring abuts against the rear shell and the partition respectively to achieve waterproof sealing.

12. The anti-evacuation water discharge structure for a water bottle according to claim 1, characterized in that: It also includes a water inlet pipe which is arranged at the water outlet of the inner tank and connected to the water inlet, and the water inlet pipe is coaxially arranged with the water inlet.

13. A water bottle, characterized in that: The invention comprises a housing and an anti-evacuation water discharge structure and a water outlet pipe as claimed in any one of claims 1 to 12 arranged in the housing, wherein: The side of the front housing is also provided with a water outlet arranged perpendicularly to the axis thereof, and the water outlet is arranged perpendicularly to the water inlet; a water outlet channel communicating with the pump chamber is formed inside the water inlet; The water outlet pipe is connected to the water outlet.

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