A direct current water pump suitable for fish tanks

Abstract

The utility model discloses a direct current water pump suitable for fish tank relates to direct current water pump technical field, and the direct current water pump suitable for fish tank includes: box body, rotor installation cylinder is located at the inside of box body, and the circumferential inboard of rotor installation cylinder is equipped with rotor cavity, and the rotor shaft is rotatably arranged in rotor cavity, and the rotor is sleeved on the outer circumferential side surface of rotor shaft, and the second end of rotor is arrayed with several oars, stator cavity is located at the inside of box body, and the stator is arranged in stator cavity, and the stator is located at the circumferential outboard of rotor, isolation cover is located at the intermediate part of rotor cavity, and the axis position of isolation cover is equipped with the anti -fouling channel, and isolation cover divides rotor cavity into first cavity and second cavity. The above-mentioned direct current water pump suitable for fish tank solves the technical problem that the larger size sundries of current direct current water pump easily flow into rotor cavity and cause rotor to be unable to run, and the rear end of rotor cavity is closed type design, and the sundries in rotor cavity can not be discharged in time, causes the rotor shaft to produce the wear and tear of not durable.

Description

Technical Field

[0001] This utility model relates to the field of DC water pump technology, and in particular to a DC water pump suitable for fish tanks. Background Technology

[0002] In aquariums, DC water pumps are generally used to drive the water in the aquarium to circulate. Their main function is to lift the aquarium water to the filter tank, then through the various areas of the filter tank, and then back into the aquarium, thus playing the role of circulation filtration.

[0003] However, existing DC water pumps do not have a wastewater cover, allowing large debris to easily flow into the rotor cavity and prevent the rotor from rotating. Therefore, a DC water pump suitable for aquariums is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a DC water pump suitable for aquariums, which solves the technical problem in existing DC water pumps where large debris can easily flow into the rotor cavity, causing the rotor to malfunction.

[0005] To achieve the above objectives, this utility model provides a DC water pump suitable for fish tanks, comprising:

[0006] Box body;

[0007] A rotor mounting cylinder is located inside the housing. A rotor cavity is provided on the inner circumferential side of the rotor mounting cylinder. A rotor shaft is rotatably mounted inside the rotor cavity. A rotor is fitted on the outer circumferential side of the rotor shaft. Several blades are arranged in an array at the second end of the rotor.

[0008] A stator cavity is located inside the housing, and a stator is disposed inside the stator cavity, with the stator located circumferentially outside the rotor;

[0009] An isolation cover is provided in the middle of the rotor cavity. A dirt-proof channel for the rotor to pass through is provided at the axial position of the isolation cover. The isolation cover divides the rotor cavity into a first cavity and a second cavity. The rotor is located in the first cavity, and the blade is located in the second cavity.

[0010] Preferably, an assembly frame is provided at the first end of the rotor mounting cylinder, and a plurality of drain holes are arranged in an array on the end face of the assembly frame along the axial direction of the rotor shaft.

[0011] Preferably, the second end of the rotor mounting cylinder is provided with a water inlet cover, the water inlet cover is rotatably connected to the first end of the rotor shaft, and the mounting bracket is rotatably connected to the second end of the rotor shaft.

[0012] Preferably, the second end of the box body is provided with a water inlet and a drain outlet, the water inlet being located at the end of the second cavity, and the drain outlet being located on the circumferential outer side of the second cavity.

[0013] Preferably, the isolation cover is provided with a plurality of snap-fit ​​posts, the snap-fit ​​posts extend in the direction toward the water inlet, the ends of the snap-fit ​​posts are provided with a plurality of connecting buckles, and the first end of the box body is provided with a plurality of connecting holes, each of the connecting buckles snapping into one of the connecting holes.

[0014] Preferably, a rubber sleeve is fitted onto the first end of the rotor shaft, and the rubber sleeve is embedded at the axial position of the assembly frame.

[0015] Preferably, a cover is provided at the first end of the box body, a plurality of limiting protrusions are provided on the inner side wall of the cover body, and a plurality of limiting slots are provided on the outer side wall of the first end of the box body, with each limiting slot engaging with one of the limiting protrusions.

[0016] Preferably, a positioning post is provided on the end face of the first end of the box body, and a positioning groove is provided on the outer peripheral side of the water inlet cover, with each positioning groove being snapped into connection with one positioning post.

[0017] Preferably, the end face of the inlet cover is arrayed with several through-holes.

[0018] Preferably, a shock-absorbing fixing sleeve is fitted on the outer peripheral side of the box body, and the shock-absorbing fixing sleeve is made of rubber.

[0019] Compared to the aforementioned background technology, the DC water pump provided by this utility model for aquariums has the following beneficial effects: the rotor cavity is divided into a first cavity and a second cavity by an isolation cover. The first cavity contains the rotor, and the second cavity contains the impeller. The drive part of the rotor is separated from the impeller. The anti-fouling channel on the isolation cover separates foreign objects of various sizes, preventing larger debris from easily entering the rotor cavity under pressure, avoiding the rotor from being jammed, effectively ensuring the normal operation of the rotor, improving the service life of the DC water pump, extending the user's cleaning and maintenance cycle, reducing maintenance workload, and enhancing the user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1A three-dimensional structural diagram of a DC water pump provided in an embodiment of this utility model;

[0022] Figure 2 A cross-sectional schematic diagram of the DC water pump provided in an embodiment of this utility model;

[0023] Figure 3 An exploded view of the DC water pump provided in this embodiment of the utility model;

[0024] Figure 4 This is a perspective structural view of the box body provided in an embodiment of the present utility model;

[0025] Figure 5 A perspective view of the isolation cover provided in an embodiment of this utility model;

[0026] Figure 6 This is a perspective structural view of the cover provided in an embodiment of the present utility model;

[0027] Figure 7 This is a three-dimensional structural diagram of the inlet cover provided in an embodiment of the present utility model.

[0028] Specifically, 1-box body; 101-water inlet; 102-drain outlet; 103-connection hole; 104-limiting slot; 105-positioning post; 2-rotor mounting cylinder; 3-rotor cavity; 301-first cavity; 302-second cavity; 4-rotor shaft; 5-rotor; 501-impeller; 6-stator cavity; 7-stator; 8-water inlet cover; 801-positioning groove; 802-water passage hole; 9-assembly frame; 901-drainage hole; 10-isolation cover; 1001-anti-fouling channel; 11-clamping post; 1101-connecting buckle; 12-rubber sleeve; 13-cover body; 1301-limiting protrusion; 14-shock-absorbing fixing sleeve; 15-drain pipe; 16-PCB board; 17-wire sleeve; 18-assembly cavity; 19-temperature sensor; 20-water inlet channel. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, to achieve the above objectives, this utility model provides a DC water pump suitable for aquariums, comprising: a housing 1 and a rotor cavity 3 and a stator cavity 6 disposed within the housing 1. The housing 1 is made of plastic, and a rotor mounting cylinder 2 is disposed inside the housing 1. The rotor cavity 3 is located on the inner circumferential side of the rotor mounting cylinder 2. A rotor shaft 4 is rotatably disposed within the rotor cavity 3. Optionally, the rotor shaft 4 is made of ceramic. A rotor 5 is fitted onto the outer circumferential side of the rotor shaft 4. The rotor 5 is coaxially arranged with the rotor shaft 4 and can rotate freely relative to the rotor shaft 4. Several impellers 501 are arrayed at the right end of the rotor 5. The housing 1 also contains a stator cavity 6, located on the outer circumferential side of the rotor mounting cylinder 2. A stator 7 is disposed within the stator cavity 6, located on the outer circumferential side of the rotor 5. The rotating magnetic field generated by the stator 7 interacts with the current in the rotor 5, generating electromagnetic torque that drives the rotor 5 to rotate. The rotor 5 drives the impellers 501 to rotate synchronously, thus completing the pumping and draining of water.

[0032] An isolation cover 10 is provided in the middle of the rotor cavity 3. An anti-fouling channel 1001 is provided at the axial position of the isolation cover 10. The anti-fouling channel 1001 is used to pass through the rotor 5. A certain gap exists between the outer wall of the rotor 5 and the anti-fouling channel 1001 to prevent interference with the rotation of the rotor 5. It should be noted that the isolation cover 10 divides the rotor cavity 3 into a first cavity 301 and a second cavity 302. The first cavity 301 contains the rotor 5, and the second cavity 302 contains the impeller 501. By separating the drive portion at the right end of the rotor 5 from the impeller 501 through the isolation cover 10, larger debris can be prevented from easily entering the rotor cavity 3 under pressure, avoiding the rotor 5 from being jammed. This effectively ensures the normal operation of the rotor 5, improves the service life of the DC water pump, extends the user's cleaning and maintenance cycle, reduces maintenance workload, and enhances the user experience.

[0033] In some embodiments of this utility model, an assembly frame 9 is provided at the right end of the rotor mounting cylinder 2. Several drain holes 901 are arranged in an array on the end face of the assembly frame 9 along the axial direction of the rotor shaft 4. After small-sized debris enters the rotor cavity 3, the small-sized debris in the rotor cavity 3 can be quickly discharged through the drain holes 901, thereby avoiding wear on the rotor shaft 4 and improving the service life of the rotor shaft 4.

[0034] A PCB board 16 is installed at the right end of the housing 1. The PCB board 16 is fitted onto the right end of the rotor mounting cylinder 2, and the PAB board is located inside the rotor cavity 3. The PAB board is mainly used to control the operation of the rotor 5. Optionally, the right end of the housing 1 is filled with sealant to seal the right end of the rotor cavity 3, preventing the PCB board 16 and the circuitry from coming into contact with water and improving the overall waterproof effect of the DC water pump. In addition, a mounting hole is provided on the side of the right end of the housing 1, which connects to the rotor cavity 3. A wire sleeve 17 is provided at the mounting hole position. The middle part of the wire sleeve 17 has a through hole for passing a connecting wire. The gap between the connecting wire and the mounting hole is sealed by the wire sleeve 17 to ensure the waterproof effect of the DC water pump.

[0035] like Figure 2 As shown, in some embodiments of this utility model, an inlet cover 8 is provided at the left end of the rotor mounting cylinder 2. Optionally, the inlet cover 8 is made of plastic material. The inlet cover 8 is rotatably connected to the left end of the rotor shaft 4. At the same time, the mounting bracket 9 is rotatably connected to the right end of the rotor shaft 4. By limiting and fixing the two ends of the rotor 5 through the inlet cover 8 and the mounting bracket 9 respectively, the rotor shaft 4 will not easily deform during long-term operation, effectively ensuring that the rotation trajectory of the rotor 5 remains unchanged, thereby further extending the service life of the DC water pump.

[0036] In some embodiments of this utility model, the second end of the box body 1 is provided with a water inlet 101 and a drain outlet 102. The water inlet 101 is located at the left end of the second cavity 302, and the drain outlet 102 is located on the circumferential outer side of the second cavity 302. During the rotation of the rotor 5 and the blade 501, water in the fish tank enters the second cavity 302 from the water inlet 101 and then exits from the second cavity 302 into the drain outlet 102. In addition, a drain pipe 15 is provided at the location of the drain outlet 102, which further discharges the water at the location of the drain outlet 102 out of the box body 1.

[0037] like Figure 4 and Figure 5 As shown, in some embodiments of this utility model, the isolation cover 10 is provided with a plurality of snap-fit ​​posts 11, which extend in the direction toward the water inlet 101. The ends of the snap-fit ​​posts 11 are provided with a plurality of connecting buckles 1101, and the left end of the housing 1 is provided with a plurality of connecting holes 103. Each connecting buckle 1101 snaps into one connecting hole 103. Through the snap-fit ​​engagement of the connecting buckles 1101 and the connecting holes 103, the isolation cover 10 can be stably fixed to the housing 1, preventing the isolation cover 10 from shifting within the rotor cavity 3, and further ensuring that the rotor 5 can always operate normally. In addition, the inner side of the snap-fit ​​posts 11 abuts against the outer peripheral side of the water inlet cover 8 to further limit and fix the isolation cover 10, further preventing the isolation cover 10 from shifting within the rotor cavity 3.

[0038] like Figure 2 and Figure 3 As shown, in some embodiments of this utility model, a rubber sleeve 12 is sleeved on the first end of the rotor shaft 4. Optionally, the rubber sleeve 12 is made of rubber material. An assembly groove is provided at the axial position of the assembly frame 9. The rubber sleeve 12 is embedded in the assembly groove. The rubber sleeve 12 prevents the outer wall 4 of the rotor shaft from directly contacting the assembly groove 9. At the same time, it can play a certain buffering and shock absorption effect, reducing the noise generated when the rotor 5 rotates.

[0039] like Figure 3 and Figure 6 As shown, in some embodiments of this utility model, a cover 13 is provided at the first end of the box body 1. Optionally, the cover 13 is made of plastic material. The inner side wall of the cover 13 is provided with a plurality of limiting protrusions 1301, and the outer side wall of the first end of the box body 1 is provided with a plurality of limiting slots 104. Each limiting slot 104 is engaged with a limiting protrusion 1301. Through the engagement of the limiting slots 104 and the limiting protrusions 1301, the cover 13 can be stably engaged on the box body 1, ensuring the structural stability of the DC water pump.

[0040] Optionally, a first arc-shaped groove is provided on the side of the cover 13 facing the box 1, and a second arc-shaped groove is provided on the side of the box 1 facing the cover 13. The second arc-shaped groove and the first arc-shaped groove are combined to form an assembly hole, through which the drain pipe 15 is fixed and limited. At the same time, the left end of the cover 13 and the box 1 are combined to form a water inlet channel 20, which is connected to the water inlet 101.

[0041] Optionally, after the cover 13 is snapped onto the left end of the box 1, there is a certain assembly gap between the inner wall of the lower left end of the cover 13 and the lower left end face of the box 1. The outer peripheral edge of the inlet cover 8 is snapped into the assembly gap, and the assembly gap forms a certain limiting effect on the inlet cover 8, thereby improving the firmness of the inlet cover 8 after assembly and thus improving the structural stability of the DC water pump.

[0042] like Figure 4 and Figure 7 As shown, in some embodiments of this utility model, a positioning post 105 is provided on the left end face of the box body 1, and a positioning groove 801 is provided on the outer peripheral side of the water inlet cover 8. Each positioning groove 801 is snapped into a positioning post 105. Through the snap-fit ​​cooperation between the positioning post 105 and the positioning groove 801, the water inlet cover 8 can be limited and fixed, avoiding the water inlet cover 8 from shifting during the operation of the DC water pump, and further improving the structural stability of the DC water pump.

[0043] It should be noted that several through-holes 802 are arranged in an array on the end face of the inlet cover 8. The through-holes 802 are used to connect the inlet 101 and the second cavity 302. While the inlet cover 8 supports and fixes the rotor shaft 4, it can ensure the normal pumping of the DC water pump.

[0044] In some embodiments of this utility model, a shock-absorbing fixing sleeve 14 is fitted on the outer periphery of the box body 1. Optionally, the shock-absorbing fixing sleeve 14 is made of rubber. By fixing the DC water pump in the fish tank through the shock-absorbing fixing sleeve 14, the noise generated by the DC water pump during operation can be reduced and the living environment in the fish tank can be improved.

[0045] Optionally, an assembly cavity 18 is provided below the box body 1, and a temperature sensor 19 is provided inside the assembly cavity 18. Placing the temperature sensor 19 below the box body 1 is beneficial for accurately detecting the water temperature in the aquarium. By monitoring the water temperature in the aquarium in real time through the temperature sensor 19, the temperature control equipment can flexibly adjust its heating power, thereby ensuring that the water temperature in the aquarium is stable within the preset range, thus ensuring the living environment in the aquarium.

[0046] In use, this invention controls the stator 7 to generate a rotating magnetic field. This rotating magnetic field interacts with the current in the rotor 5, producing electromagnetic torque that drives the rotor 5 to rotate. The rotor 5 then drives the impeller 501 to rotate synchronously. During the rotation of the impeller 501, water from the fish tank enters the second cavity 302 sequentially through the inlet channel 20 and the inlet 101, and then exits from the second cavity 302 sequentially through the outlet 102 and the drain pipe 15. Simultaneously, the isolation cover 10 blocks larger debris from entering the first cavity 301 and further discharges it with the water flow into the second cavity 302. Smaller debris, after entering the first cavity 301, is further discharged from the first cavity 301 under pressure, without remaining inside.

[0047] In summary, by using the inlet cover 8 and the mounting bracket 9 to limit and fix both ends of the rotor 5, the rotor shaft 4 will not easily deform during long-term operation, effectively ensuring that the rotation trajectory of the rotor 5 remains unchanged, thereby extending the service life of the DC water pump.

[0048] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0049] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A DC water pump suitable for fish tanks, characterized in that, include: Box body; A rotor mounting cylinder is located inside the housing. A rotor cavity is provided on the inner circumferential side of the rotor mounting cylinder. A rotor shaft is rotatably mounted inside the rotor cavity. A rotor is fitted on the outer circumferential side of the rotor shaft. Several blades are arranged in an array at the second end of the rotor. A stator cavity is located inside the housing, and a stator is disposed inside the stator cavity, with the stator located circumferentially outside the rotor; An isolation cover is provided in the middle of the rotor cavity. A dirt-proof channel for the rotor to pass through is provided at the axial position of the isolation cover. The isolation cover divides the rotor cavity into a first cavity and a second cavity. The rotor is located in the first cavity, and the blade is located in the second cavity.

2. The DC water pump suitable for aquariums according to claim 1, characterized in that, An assembly frame is provided at the first end of the rotor mounting cylinder, and a plurality of drain holes are arranged in an array on the end face of the assembly frame along the axial direction of the rotor shaft.

3. A DC water pump suitable for fish tanks according to claim 2, characterized in that, The second end of the rotor mounting cylinder is provided with a water inlet cover, which is rotatably connected to the first end of the rotor shaft, and the mounting bracket is rotatably connected to the second end of the rotor shaft.

4. A DC water pump suitable for fish tanks according to claim 2, characterized in that, The second end of the box is provided with a water inlet and a drain outlet. The water inlet is located at the end of the second cavity, and the drain outlet is located on the circumferential outer side of the second cavity.

5. A DC water pump suitable for fish tanks according to claim 4, characterized in that, The isolation cover is provided with a number of snap-fit ​​posts, which extend in the direction toward the water inlet. The end of the snap-fit ​​post is provided with a number of connecting buckles. The first end of the box is provided with a number of connecting holes, and each connecting buckle snaps into one of the connecting holes.

6. A DC water pump suitable for aquariums according to claim 2, characterized in that, A rubber sleeve is fitted onto the first end of the rotor shaft, and the rubber sleeve is embedded in the axial position of the assembly frame.

7. A DC water pump suitable for aquariums according to any one of claims 1-6, characterized in that, The first end of the box is provided with a cover, the inner side wall of the cover is provided with a number of limiting protrusions, and the outer side wall of the first end of the box is provided with a number of limiting slots, each of the limiting slots being engaged with one of the limiting protrusions.

8. A DC water pump suitable for fish tanks according to claim 3, characterized in that, A positioning post is provided on the end face of the first end of the box body, and a positioning groove is provided on the outer peripheral side of the water inlet cover. Each positioning groove is snapped into connection with one positioning post.

9. A DC water pump suitable for aquariums according to claim 8, characterized in that, The end face of the inlet cover is arrayed with several through-holes.

10. A DC water pump suitable for aquariums according to claim 1, characterized in that, The outer periphery of the box is fitted with a shock-absorbing and fixing sleeve, which is made of rubber.

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