Water pump capable of being used in series

Abstract

The technical scheme belongs to the technical field of water pumps, and particularly relates to a water pump capable of being used in series connection, which comprises a water pump body, a connecting disc is arranged on the water pump body, a water inlet end and a water outlet end of the water pump body are respectively positioned on two sides of the connecting disc, and a connecting edge I is arranged at the water outlet end; the water pump body at the water inlet end is sleeved with the flow guide cover, the front end of the flow guide cover is connected with the connecting disc, a first water inlet is formed in the rear end of the flow guide cover, and a second connecting edge is arranged on the edge of the first water inlet; the water pumps can be connected in series end to end, so that the overall lift can be adjusted according to different water pumping requirements; the single flow guide cover is connected to the connecting disc of the water pump body, operation and installation are easy and convenient, meanwhile, the electric wire is fixed in the limiting hole in the connecting disc in a penetrating mode, interference and influence between installation and disassembly of the flow guide cover and the electric wire are avoided, and the sealing effect between the electric wire and the connecting disc is guaranteed; and the sealing and fixing of the wire are prevented from being considered when the fairing is installed.

Description

Technical Field

[0001] The present technical solution relates to the technical field of water pumps, and particularly refers to a water pump that can be used in series. Background Art

[0002] In the existing water pump relay drainage methods, one is the intermittent relay method in a water pool, that is, a water pool is set at the limit water supply position of the water pump and used as the water source for the next relay water pump, and so on, to send water to the next water pool; the other is the direct pipe belt continuous relay method, that is, an overcurrent device is directly installed outside the same type of main water pump and used as a relay pump, and the outlet of the main pump outlet pipe belt is directly connected to the inlet of the relay pump.

[0003] For example, Chinese Patent CN202321479128.1 discloses a drainage relay device, including a submersible pump and a housing assembly. The housing assembly includes a first cylinder and a second cylinder, and the second cylinder is detachably connected to the first cylinder by a connecting clamp; the housing assembly can be connected to the water outlet of the previous stage drainage relay device or the main water pump. The water flow entering the flow channel from the external water inlet enters the submersible pump from the water inlet of the submersible pump under the action of the submersible pump, and flows into the next stage drainage relay device or is discharged through the water outlet of the submersible pump.

[0004] However, for such products, since the mutual cooperation of two cylinders is used to achieve the sleeve outside the water pump, and at the same time, the fixing of the water pump wires on the cylinder needs to be realized, during subsequent use, water leakage often occurs at the place where the wires are fixed. If it is used outside the water surface, the leaked water will scatter on the ground, causing pollution and other situations. Summary of the Invention

[0005] The purpose of the present technical solution is to provide a water pump that can be used in series. By setting a connection plate on the water pump body and connecting a single guide cover to the connection plate, the guide cover is sleeved outside the water pump body, improving the problem that the mutual cooperation of two cylinders is used to sleeve outside the water pump, resulting in easy water leakage at the wire fixing place.

[0006] The purpose of the present technical solution is achieved as follows:

[0007] A water pump that can be used in series, including:

[0008] A water pump body, on which a connection plate is provided. The water inlet end and the water outlet end of the water pump body are respectively located on both sides of the connection plate, and a connection edge one is provided at the water outlet end;

[0009] A guide cover, which is sleeved on the water pump body at the water inlet end, and the front end of the guide cover is connected to the connection plate. The rear end of the guide cover forms a water inlet one, and a connection edge two is provided at the edge of the water inlet one;

[0010] An inlet channel is formed between the inner wall of the fairing and the outer wall of the water pump body, and the first inlet is communicated with the second inlet at the water inlet end through the inlet channel;

[0011] Wherein, a limiting hole is formed in the connecting disc, and the electric wire on the water pump body is arranged in the limiting hole and fixed by a sealing and fixing device.

[0012] Preferably, the sealing and fixing device includes:

[0013] A mounting seat, the rear end of which is movably connected to the limiting hole. The front end of the mounting seat has a plurality of elastically deformable pieces distributed circumferentially. An adjusting space is provided between the elastically deformable pieces, and a first limiting portion is arranged on the inner wall of the mounting seat;

[0014] A locking member, which is movably connected to the front end of the mounting seat. A guiding portion is arranged in the locking member for making the elastically deformable pieces approach each other;

[0015] A sealing ring, which is arranged inside the elastically deformable pieces, and the rear end of the sealing ring is movably abutted against the front end of the first limiting portion;

[0016] After the electric wire passes through the mounting seat, the adjusting space is reduced by adjusting the locking member, so that the elastically deformable pieces approach each other to squeeze the sealing ring, and the inner wall of the sealing ring is movably abutted against the outer wall of the electric wire, thereby realizing the restriction of the movement of the electric wire.

[0017] Preferably, a connecting seat is arranged on the water pump body, and the electric wire is connected to the vertical side wall of the connecting seat close to the limiting hole;

[0018] A protective sleeve is sleeved on the electric wire between the connecting seat and the connecting disc. One end of the protective sleeve is hermetically connected to the sealing and fixing device or the limiting hole, and the other end of the protective sleeve is hermetically connected to the connecting seat.

[0019] Preferably, the protective sleeve is of a spiral cylindrical structure, and sealing rubber is arranged on the outside thereof.

[0020] Preferably, a connecting port is eccentrically arranged on the connecting disc.

[0021] Preferably, a support frame is arranged at the rear side of the water pump body, and the outer edge of the support frame is movably abutted against the inner wall of the fairing for restricting the shaking of the water pump body in the fairing.

[0022] Preferably, the support frame has a frame body 1 and a frame body 2, the frame body 1 has a tightening strip 1, the frame body 2 has a tightening strip 2, the tightening strip 1 and the tightening strip 2 are both installed on the water pump body, and the ends of the tightening strip 1 and the tightening strip 2 are connected and fixed by fixing parts, so that the support frame is clamped on the water pump body.

[0023] Preferably, a second limiting portion is provided on the outer side wall of the water pump body, and the second limiting portion is movably abutted against the front end of the support frame to limit the shaking of the support frame.

[0024] Preferably, the water pump body has at least:

[0025] An impeller cover is movably connected to the front end of the connecting plate, and the impeller cover is provided with a water outlet to form the water outlet end;

[0026] A pump housing, which is movably connected to the rear end of the connecting plate, and the pump housing is provided with a second water inlet to form the water inlet end;

[0027] A motor, the front end of which is movably connected to the rear end of the pump housing, and the front end of the rotating shaft of the motor passes through the connecting opening of the connecting plate and extends into the impeller cover;

[0028] The impeller is mounted on the rotating shaft and rotatably placed in the impeller cover.

[0029] Preferably, the impeller cover and the connecting disc are integrally formed;

[0030] Alternatively, the pump housing and the connecting disc are integrally formed.

[0031] Compared with the prior art, the technical solution has the following outstanding and beneficial technical effects:

[0032] 1. The water pump designed by this technical solution can be connected in series head to tail, so that the overall head size can be adjusted according to different water pumping requirements, and it is flexible and convenient to use; secondly, it is connected to the connecting plate of the water pump body through a single deflector cover, which makes the operation and installation simple and convenient. At the same time, the wires are passed through the limiting holes fixed on the connecting plate, and the installation and removal of the deflector cover will not interfere with and affect the wires, thereby ensuring the sealing effect between the wires and the connecting plate, avoiding the need to consider the sealing and fixation of the wires when installing the deflector cover.

[0033] 2. This technical solution is designed so that when a single water pump is used for drainage, the deflector cover is removed so that the water pump body can directly perform drainage operations, thereby being able to adapt to drainage operations in narrow spaces. When there is no deflector cover, the water pump body performs drainage operations as a separate water pump, so that the water pump body can be used as a submersible pump.

[0034] 3. The design of this technical solution realizes the sealing between the wire and the connection plate through a sealing and fixing device. After installing the flow guide cover, the sealing performance of the water inlet channel is ensured, preventing liquid from flowing out through the gap between the wire and the limit hole, keeping the working environment clean. At the same time, the sealing and fixing device can restrict the movement of the wire, avoiding the breakage of the connection between the end of the wire and the water pump body when dragging the wire, preventing the water pump from stopping working due to poor wire contact, and improving the safety of the water pump. In addition, during the disassembly and installation of the flow guide cover, it will not affect the sealed connection between the wire and the sealing and fixing device, ensuring the initial sealing effect of the sealing and fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram of this technical solution.

[0036] Figure 2 is one of the exploded views of the water pump body and the flow guide cover of this technical solution.

[0037] Figure 3 is a sectional view of this technical solution.

[0038] Figure 4 is Figure 3 the enlarged view of part A in

[0039] Figure 5 is the exploded view of the sealing and fixing device of this technical solution.

[0040] Figure 6 is a schematic structural diagram of the connection plate of this technical solution.

[0041] Figure 7 is the second exploded view of the water pump body and the flow guide cover of this technical solution.

[0042] Reference numerals: 1, water pump body; 11, water inlet end; 12, water outlet end; 13, wire; 131, protective sleeve; 14, connection seat; 15, support frame; 151, frame one; 152, frame two; 153, tightening strip one; 154, tightening strip two; 155, fixing part; 16, impeller cover; 161, water outlet; 17, pump casing; 171, second water inlet; 18, motor; 181, rotating shaft; 19, impeller;

[0043] 2, connection plate; 21, limit hole; 22, first convex ring; 23, connection port;

[0044] 3, flow guide cover; 31, first water inlet; 32, second convex ring; 33, first clamp; 34, first limit groove;

[0045] 4, water inlet channel;

[0046] 51, first connecting edge; 52, second connecting edge;

[0047] 6. Sealing and fixing device; 61. Mounting base; 611. Elastic piece; 612. Adjusting space; 613. First limiting part; 62. Locking piece; 620. Guide part; 621. Limiting protrusion; 63. Sealing ring;

[0048] 7. Filter screen; 100. Water pump. Specific implementation manner

[0049] The following further elaborates on the specific implementation manner of the present technical solution in conjunction with the accompanying drawings. See Figures 1-7 .

[0050] A water pump that can be used in series, including:

[0051] The water pump body 1 is provided with a connection disk 2 thereon. The water inlet end 11 and the water outlet end 12 of the water pump body 1 are respectively located on both sides of the connection disk 2. A first connection edge 51 is provided at the water outlet end 12;

[0052] The flow guide cover 3 is sleeved on the water pump body 1 at the water inlet end 11, and the front end of the flow guide cover 3 is connected to the connection disk 2. The rear end of the flow guide cover 3 forms a first water inlet 31, and a second connection edge 52 is provided at the edge of the first water inlet 31; the rear end of the water pump body 1 is placed inside the flow guide cover 3, and the rear end of the water pump body 1 will not extend out of the flow guide cover 3 from the first water inlet 31;

[0053] An intake passage 4 is formed between the inner wall of the flow guide cover 3 and the outer wall of the water pump body 1. The first water inlet 31 is communicated with the second water inlet 171 of the water inlet end 11 through the intake passage 4;

[0054] Among them, a limiting hole 21 is opened on the connection disk 2. The electric wire 13 on the water pump body 1 is threaded through the limiting hole 21 and fixed by a sealing and fixing device 6. The electric wire 13 on the water pump body 1 extends out of the flow guide cover 3 through the limiting hole 21 so as to be able to connect to a power source. The installation or disassembly of the flow guide cover 3 will not affect the connection and fixation between the electric wire and the limiting hole 21, that is, the installation of the electric wire does not need to be considered during the installation process of the flow guide cover 3, making the installation of the flow guide cover 3 fast, convenient, and simple.

[0055] The water pump body 1 in this design scheme is a drainage pump that can be used alone. After the flow guide cover 3 is disassembled, the water pump body 1 can be used as a submersible pump, or placed on the ground as a common drainage pump (similar to the usage methods of a self-priming centrifugal pump and a centrifugal pump).

[0056] The middle part of the electric wire 13 is connected and fixed to the limiting hole 21 of the connection disk 2, so as to ensure that after the flow guide cover 3 is installed, there is no need to open a hole for the electric wire 13 to pass through on the flow guide cover 3, thus avoiding the leakage caused by the poor sealing effect between the opened hole and the electric wire;

[0057] The sealing and fixing device 6 of this solution ensures that the liquid in the water inlet channel 4 will not flow out from the gap between the wire and the connection plate, ensuring the sealing effect of the water inlet channel 4.

[0058] In this design solution, a connection port 23 is eccentrically arranged on the connection plate 2, so that the connection plate 2 is eccentrically arranged with the rotating shaft 181 of the water pump body, the motor 18 and the impeller 19, reducing the outer diameter of the connection plate 2, thereby reducing the outer diameter of the water pump body 1 and reducing the overall weight of the water pump body 1, which is convenient for transportation and movement.

[0059] The sealing and fixing device 6 includes:

[0060] A mounting seat 61, the rear end of which is movably connected to the limiting hole 21. A pipe is convexly arranged at the edge of the limiting hole 21, and the mounting seat 61 can be inserted into the pipe. The rear end of the mounting seat 61 is threadedly connected to the inner wall of the limiting hole 21 (i.e., the inner wall of this pipe), or the mounting seat 61 and the limiting hole 21 can be welded; several circumferentially distributed elastic pieces 611 are provided at the front end of the mounting seat 61, an adjusting space 612 is arranged between the elastic pieces 611, and a first limiting part 613 is arranged on the inner wall of the mounting seat 61;

[0061] A locking part 62, which is threadedly connected (or clamped) to the front end of the mounting seat 61. The front end of the locking part 62 is provided with a gradually shrinking and arc-shaped guiding part 620 for making the elastic pieces 611 approach each other;

[0062] A sealing ring 63, which is a rubber ring or a silicone ring, is installed on the inner side of the front end of the mounting seat 61. The outer side wall of the sealing ring 63 is movably abutted against the inner side of the elastic pieces 611, and the rear end of the sealing ring 63 is movably abutted against the front end of the first limiting part 613;

[0063] When the wire 13 passes through the mounting seat 61, by adjusting the locking part 62, the adjusting space 612 is reduced, so that the elastic pieces 611 approach each other to squeeze the sealing ring 63, and the inner wall of the sealing ring 63 is movably abutted against the outer wall of the wire 13, thereby restricting the movement of the wire 13.

[0064] The sealing and fixing device 6 realizes the sealing between the wire 13 and the limiting hole 21, avoiding the pollution caused by the liquid in the water inlet channel 4 flowing out from the limiting hole 21. At the same time, the sealing and fixing device 6 is used to fix the wire 13, avoiding the problems that the wire 13 breaks between the connection seat 14 of the water pump body 1 or the wire 13 detaches from the connection seat 14 under the condition of dragging the wire 13, etc., ensuring the firm connection between the wire 13 and the connection seat 14.

[0065] The front end of the guiding part 620 of the locking part 62 is inwardly retracted to form a limiting protrusion 621, and the limiting protrusion 621 is movably abutted against the front end of the sealing ring 63 to prevent the sealing ring 63 from detaching from the front end of the mounting seat 61.

[0066] A connecting seat 14 is provided on the water pump body 1. The connecting seat 14 is used to connect the electric wire 13. The vertical side wall of the connecting seat 14 close to the limiting hole 21 direction is connected to the end of the electric wire 13, and the connection part of the connecting seat 14 and the electric wire 13 is close to the limiting hole 21 of the flow guide cover 3.

[0067] A protective sleeve 131 is sleeved on the electric wire 13 between the connecting seat 14 and the connecting disc 2. The protective sleeve 131 prevents stones or sand grains in the liquid from rubbing or wearing the outer wall of the electric wire 13, ensuring the service life of the electric wire 13 and improving the safety of the electric wire 13. One end of the protective sleeve 131 is hermetically connected to the sealing and fixing device 6 or the limiting hole 21, and the other end of the protective sleeve 131 is hermetically connected to the connecting seat 14, preventing liquid from entering between the inner wall of the protective sleeve 131 and the outer wall of the electric wire 13, ensuring the safe use and service life of the electric wire 13.

[0068] When the protective sleeve 131 is connected to the limiting hole 21, it can be connected by a tight fit or a waterproof glue. When the protective sleeve 131 is connected to the sealing and fixing device 6, the front end of the protective sleeve 131 is inserted into the rear end of the mounting seat 61, and the sealing connection is achieved by the inner wall of the mounting seat 61 abutting against the outer wall of the protective sleeve 131. The protective sleeve 131 and the connecting seat 14 are connected by a tight fit or glued with glue.

[0069] The protective sleeve 131 is a spiral cylindrical structure, made of a metal material, and has a sealing rubber on its outer side.

[0070] A support frame 15 is provided on the rear outer wall of the water pump body 1. The support frame 15 is a mesh structure. The support frame 15 is tightly fastened on the water pump body 1. The outer edge of the support frame 15 is movably abutted against the inner wall of the flow guide cover 3 to prevent the water pump body 1 from shaking in the flow guide cover 3, and at the same time ensure that the liquid can enter the water inlet channel 4 from the first water inlet 31.

[0071] The support frame 15 has a first frame body 151 and a second frame body 152. Both the first frame body 151 and the second frame body 152 are semi-circular sectors. The first frame body 151 has a first tightening strip 153, and the second frame body 152 has a second tightening strip 154. The first tightening strip 153 and the second tightening strip 154 are arranged in an arc shape. Both the first tightening strip 153 and the second tightening strip 154 are installed on the water pump body 1, that is, the inner sides of the first tightening strip 153 and the second tightening strip 154 are attached to the outer wall of the water pump body 1, and the ends of the first tightening strip 153 and the second tightening strip 154 are connected and fixed by a fixing member 155 (bolt or screw or pin), so that the support frame 15 is buckled on the water pump body 1.

[0072] The rear end of the connecting seat 14 is movably abutted against the front end of the support frame 15 to limit the movement of the support frame 15, avoid the support frame 15 from being offset due to the collision of foreign objects such as stones against the support frame 15, and ensure the stability of the connection of the support frame 15.

[0073] A second limiting portion is provided on the outer side wall of the water pump body 1. The second limiting portion is a support column or a support protrusion. The second limiting portion is movably abutted against the front end of the support frame 15 to limit the shaking of the support frame 15, avoid the support frame 15 from shaking in the flow guide cover 3, and ensure the stability of the water pump body 1 working in the flow guide cover 3.

[0074] The support frame 15 is a grid-like disk made of iron wire, or the support frame 15 can be formed by opening at least one hole in a circular support ring.

[0075] A third limiting portion is provided on the inner side wall of the flow guide cover 3. The third limiting portion is a convex ring or a ring groove. The outer end of the support frame 15 is placed in the ring groove or abutted against the side end of the convex ring, so as to avoid the support frame 15 from shaking in the flow guide cover 3 and ensure the stability of the water pump body 1 working in the flow guide cover 3.

[0076] The edge of the connecting disk 2 has a first convex ring 22. A second convex ring 32 is provided on the front side of the flow guide cover 3. A first clamp 33 is sleeved on the outer walls of the first convex ring 22 and the second convex ring 32. The first clamp 33 has a first limiting groove 34 adapted to the first convex ring 22 and the second convex ring 32.

[0077] When at least two water pumps 100 are connected to each other front and back, the second connecting edge 52 of the flow guide cover 3 of the water pump 100 located at the front side and the first connecting edge 51 of the water pump body 1 of the water pump 100 located at the rear side are connected by a second clamp. The second clamp is provided with a second limiting groove adapted to the first connecting edge 51 and the second connecting edge 52. The second clamp has the same structure as the first clamp 33.

[0078] The water pump body 1 has:

[0079] An impeller cover 16, which is movably connected to the front end of the connection disk 2 (connected by screws or bolts or snap connection), and the impeller cover 16 is provided with a water outlet 161 to form the water outlet end 12;

[0080] A pump housing 17, which is movably connected to the rear end of the connection disk 2 (connected by screws or bolts or snap connection), and the pump housing 17 is provided with a second water inlet 171 to form the water inlet end 11;

[0081] The water pump body 1 further has a motor 18, a rotating shaft 181, and an impeller 19; the motor 18 is installed at the rear end of the pump housing 17, and the motor 18 is placed inside the flow guide cover 3; the front end of the motor 18 is connected to the rotating shaft 181, the front end of the rotating shaft 181 is connected to the impeller 19, and the front end of the rotating shaft 181 passes through the connection port 23 of the connection disk 2 and extends into the impeller cover 16; the impeller 19 is rotatably arranged inside the impeller cover 16.

[0082] A filter screen 7 is arranged on the pump housing 17, and the filter screen 7 is clamped on the pump housing 17 to filter the liquid entering the second water inlet 171, preventing stones and other sundries from colliding with the impeller 19 and damaging the impeller 19, thereby ensuring the service life of the water pump body 1.

[0083] A handle is arranged on the filter screen 7, which is convenient for the user to move the water pump body 1, and is also convenient for the user to disassemble or install the filter screen 7.

[0084] A lifting handle is arranged at the front end of the connection disk 2 for the user to lift the water pump body 1.

[0085] When the water pump body 1 is used alone, that is, when the flow guide cover 3 is not installed, the support frame 15 can be disassembled from the water pump body 1, and at this time, the filter screen 7 is installed on the water pump body 1;

[0086] When the flow guide cover 3 is installed on the water pump body 1 for use, the support frame 15 needs to be installed on the water pump body 1, and the filter screen 7 can be selectively installed or not installed according to actual needs.

[0087] Variant 1:

[0088] The impeller cover 16 and the connection disk 2 are integrally formed, and the connection disk 2 is movably connected to the pump housing 17, which is convenient for installation and production.

[0089] Variant 2:

[0090] The pump housing 17 is integrally formed with the connecting disc 2, and the connecting disc 2 is movably connected to the impeller cover 16. When the impeller 19 or the impeller cover 16 is damaged or the sizes of the impeller 19 and the impeller cover 16 need to be replaced, it is not necessary to disassemble the guide vane 3, and the impeller 19 and the impeller cover 16 can be replaced and maintained. The operation is convenient. Especially when multiple water pumps 100 are connected in series end to end, after the impeller 19 of the middle water pump 100 is damaged, only the impeller cover 16 of this water pump needs to be separated from the previous water pump, and then the impeller cover 16 is disassembled from the connecting disc 2, without separating the rear end of this water pump from the front end of the next water pump, and the maintenance is more convenient.

[0091] The above shows and describes the basic principles, main features and advantages of the technical solution. Those skilled in the art should understand that the technical solution is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, and these changes and improvements all fall within the scope of the technical solution claimed. The scope of protection required by the technical solution is defined by the appended claims and their equivalents.

[0092] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the technical solution can be implemented. Therefore, they do not have technical substance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the efficacy that the technical solution can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed by the technical solution. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope in which the technical solution can be implemented. The change or adjustment of their relative relationship, without substantial change of the technical content, should also be regarded as the scope in which the technical solution can be implemented.

[0093] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or it can also be indirectly connected to the other element through an intermediate element.

[0094] In addition, the descriptions involving "first", "second", etc. in this application are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. A water pump that can be used in series, characterized in that: include: A water pump body (1) is provided with a connection plate (2), a water inlet end (11) and a water outlet end (12) of the water pump body (1) are respectively located on two sides of the connection plate (2), and a connection edge (51) is provided at the water outlet end (12); A flow guide cover (3) is sleeved on the water pump body (1) at the water inlet end (11), and the front end of the flow guide cover (3) is connected to the connection plate (2), the rear end of the flow guide cover (3) forms a water inlet 1 (31), and the edge of the water inlet 1 (31) is provided with a connecting edge 2 (52); A water inlet channel (4) is formed between the inner wall of the deflector (3) and the outer wall of the water pump body (1), and the water inlet 1 (31) is connected to the water inlet 2 (171) of the water inlet end (11) through the water inlet channel (4); The connection plate (2) is provided with a limiting hole (21), and the electric wire (13) on the water pump body (1) is inserted into the limiting hole (21) and fixed by a sealing fixing device (6); A support frame (15) is provided on the rear side of the water pump body (1), and the outer edge of the support frame (15) movably abuts against the inner wall of the air deflector (3) to limit the shaking of the water pump body (1) in the air deflector (3).

2. A water pump that can be used in series according to claim 1, characterized in that: The sealing and fixing device (6) comprises: A mounting seat (61), the rear end of which is movably connected to the limiting hole (21), the front end of the mounting seat (61) having a plurality of circumferentially distributed spring pieces (611), an adjustment space (612) being provided between the spring pieces (611), and a limiting portion (613) being provided on the inner wall of the mounting seat (61); A locking member (62) movably connected to the front end of the mounting seat (61), wherein a guide portion (620) is provided inside the locking member (62) for bringing the spring sheets (611) closer to each other; A sealing ring (63) is arranged inside the spring sheet (611), and the rear end of the sealing ring (63) movably abuts against the front end of the first limiting portion (613); When the electric wire (13) passes through the mounting seat (61), the adjustment space (612) is reduced by adjusting the locking member (62), so that the spring sheets (611) are moved closer to each other to squeeze the sealing ring (63), so that the inner wall of the sealing ring (63) is movably abutted against the outer wall of the electric wire (13), thereby limiting the movement of the electric wire (13).

3. A water pump that can be used in series according to claim 2, characterized in that: The water pump body (1) is provided with a connection seat (14), and the vertical side wall of the connection seat (14) close to the limiting hole (21) is connected to the electric wire (13); A protective sleeve (131) is sleeved on the electric wire (13) between the connection seat (14) and the connection plate (2); one end of the protective sleeve (131) is sealedly connected to the sealing fixing device (6) or the limiting hole (21); and the other end of the protective sleeve (131) is sealedly connected to the connection seat (14).

4. A water pump that can be used in series according to claim 3, characterized in that: The protective sleeve (131) is a spiral cylindrical structure, and a sealing rubber is arranged on the outer side thereof.

5. A water pump that can be used in series according to any one of claims 1 to 4, characterized in that: A connection opening (23) is eccentrically arranged on the connection disk (2).

6. A water pump that can be used in series according to claim 1, characterized in that: The support frame (15) is a grid-shaped plate, which is sleeved on the rear end outer side wall of the water pump body (1).

7. A water pump that can be used in series according to any one of claims 1 to 4, characterized in that: The support frame (15) comprises a frame body 1 (151) and a frame body 2 (152); the frame body 1 (151) comprises a clamping strip 1 (153); the frame body 2 (152) comprises a clamping strip 2 (154); the clamping strip 1 (153) and the clamping strip 2 (154) are both mounted on the water pump body (1); and the ends of the clamping strip 1 (153) and the clamping strip 2 (154) are connected and fixed by a fixing member (155), so that the support frame (15) is clamped on the water pump body (1).

8. A water pump that can be used in series according to claim 7, characterized in that: A second limiting portion is provided on the outer side wall of the water pump body (1), and the second limiting portion is movably abutted against the front end of the support frame (15) to limit the shaking of the support frame (15).

9. A water pump that can be used in series according to claim 1 or 2 or 3 or 4 or 6 or 8, characterized in that: The water pump body (1) at least comprises: An impeller cover (16) is movably connected to the front end of the connecting plate (2), and the impeller cover (16) is provided with a water outlet (161) to form the water outlet end (12); A pump housing (17) movably connected to the rear end of the connection plate (2), and the pump housing (17) is provided with a second water inlet (171) to form the water inlet end (11); A motor (18) having a front end movably connected to a rear end of a pump housing (17), wherein a front end of a rotating shaft (181) of the motor (18) passes through a connection port (23) of a connection plate (2) and extends into an impeller cover (16); The impeller (19) is mounted on the rotating shaft (181) and is rotatably disposed in the impeller cover (16).

10. A water pump that can be used in series according to claim 9, characterized in that: The impeller cover (16) and the connecting plate (2) are integrally formed; Alternatively, the pump housing (17) and the connecting plate (2) are integrally formed.

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