Sealing structure of water pump

Abstract

The utility model relates to the technical field of water pumps, in particular to a sealing structure of a water pump, which comprises a rack, a pump body is mounted on the rack, a pump cover covers the pump body, an impeller is rotatably mounted on one side, close to the pump cover, of the pump body, a liquid inlet pipe and a liquid outlet pipe are arranged on the pump body, a rotating rod is rotatably mounted on the pump body, and the rotating rod is rotatably mounted on the rack. The impeller is installed on the rotating rod, one end of the rotating rod penetrates out of the pump body, a driving assembly is arranged at the end, close to the rotating rod, of the rack, and the driving assembly drives the rotating rod to rotate; sealing assemblies are arranged on the liquid inlet pipe and the liquid outlet pipe of the pump body, and the sealing assemblies seal the end of the liquid inlet pipe and the end of the liquid outlet pipe. A gap is prevented from being formed in the connecting position of the liquid inlet pipe and the liquid outlet pipe, and leakage of the pump body in the using process is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of water pumps, and in particular to a sealing structure of a water pump. Background Art

[0002] At present, a water pump is a mechanical device used to transport liquid from one location to another. It pumps or pressurizes the liquid to the desired location by providing mechanical energy. Water pumps are widely used in industries, agriculture, construction, water supply and drainage systems, heating and ventilation systems, etc. They can be used to provide water supply, drainage, irrigation, fire fighting, pressurization, circulation, air conditioning and other purposes. The types and working principles of water pumps vary. Choose the appropriate type of water pump according to the specific application requirements and working conditions, such as centrifugal pumps, volumetric pumps, axial flow pumps, submersible pumps, etc.

[0003] In the prior art, reference Figure 5 , discloses a centrifugal pump, including a base 100, a centrifugal pump 200, a rotating wheel 300 and an electric machine 400, the centrifugal pump 200 and the electric machine 400 are arranged on the base 100, and the rotating wheel 300 is arranged in the centrifugal pump 200 and connected to one end of the main shaft of the electric machine 400, the rotating wheel 300 includes a lower cover plate 301, an upper cover plate 302 and a plurality of blades 303 arranged between the lower cover plate 301 and the upper cover plate 302, a water suction port 3011 is formed on the lower cover plate 301, and a water outlet 3021 is formed on the upper cover plate 302.

[0004] When in use, the external pipe is connected to the water inlet 3011 and the water outlet 3021 respectively, and then the electric machine 400 drives the rotating wheel 300 to rotate, and the liquid is continuously pushed from the water inlet 3011 to the water outlet 3021 through the rotation of the rotating wheel 300.

[0005] With respect to the above-mentioned related technologies, the inventors believe that when the motor drives the impeller to rotate, the vibration of the motor will be transmitted to the pump body. After long-term use, gaps may appear at the connection between the external pipe and the water inlet and outlet, thereby causing leakage. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a sealing structure for a water pump, which solves the technical problem that after long-term use, gaps may appear at the connection between the external pipe and the water inlet and the water outlet, thereby causing leakage.

[0007] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:

[0008] A sealing structure of a water pump comprises a frame, a pump body is mounted on the frame, a pump cover is provided on the upper cover of the pump body, an impeller is rotatably mounted on a side of the pump body close to the pump cover, and a liquid inlet pipe and a liquid outlet pipe are provided on the pump body, a rotating rod is rotatably mounted on the pump body, the impeller is mounted on the rotating rod, and one end of the rotating rod passes through the pump body, a driving assembly is provided on one end of the frame close to the rotating rod, and the driving assembly drives the rotating rod to rotate; a sealing assembly is provided on the liquid inlet pipe and the liquid outlet pipe of the pump body, and the sealing assembly seals the ends of the liquid inlet pipe and the liquid outlet pipe.

[0009] Through the above technical solution, the external pipeline is connected to the liquid inlet pipe and the liquid outlet pipe of the pump body, and then the driving motor drives the rotating rod to rotate, and the rotating rod drives the impeller to rotate in the pump body. As the impeller rotates, the liquid enters from the liquid inlet pipe and then flows out from the liquid outlet pipe. When the liquid flows through the pump body, the sealing component seals the ends of the liquid inlet pipe and the liquid outlet pipe, thereby preventing a gap from appearing at the connection between the liquid inlet pipe and the liquid outlet pipe, and preventing the pump body from leaking during use.

[0010] Furthermore, the driving assembly includes a driving motor, which is installed on one side of the frame, and a driving gear is provided on the output shaft of the driving motor, and a driven gear is provided on the rotating rod, and the driving gear is meshed with the driven gear.

[0011] Through the above technical solution, the driving motor drives the active gear to rotate, and the active gear drives the driven gear to rotate. On the one hand, the stability of the rotation of the rotating rod can be improved, and on the other hand, the vibration of the driving motor can be reduced and transmitted to the pump body through the rotating rod.

[0012] Furthermore, the sealing assembly includes a sealing ring, one end of the liquid inlet pipe and the liquid outlet pipe are each provided with an installation groove, a clamping spring is arranged between the sealing ring and the installation groove, and both ends of the clamping spring are respectively connected to the corresponding liquid inlet pipe, liquid outlet pipe and the sealing ring.

[0013] Through the above technical solution, the pressing springs on the liquid inlet pipe and the liquid outlet pipe press the sealing ring against the external connection, thereby improving the sealing performance of the liquid inlet pipe, the liquid outlet pipe and the external pipe.

[0014] Furthermore, a first sealing portion and a second sealing portion are formed on the sealing ring, the first sealing portion abuts against the ends of the liquid inlet pipe and the liquid outlet pipe, and the second sealing portion abuts against the inner walls of the liquid inlet pipe and the liquid outlet pipe.

[0015] Through the above technical solution, the first sealing part seals the end of the liquid inlet pipe, and the second sealing part seals the inner walls of the liquid inlet pipe and the liquid outlet pipe, thereby increasing the sealing performance between the sealing ring and the corresponding liquid inlet pipe and the liquid outlet pipe.

[0016] Furthermore, a first positioning groove is provided on the pump body, a second positioning groove is provided on the pump cover, the second positioning groove corresponds to the first positioning groove, and a sealing strip is provided between the pump body and the pump cover, and the sealing strip is embedded between the first positioning groove and the second positioning groove.

[0017] Through the above technical solution, the sealing strip seals the gap between the pump body and the pump cover, so that the sealing performance of the pump body is improved.

[0018] Furthermore, a fixing bolt is provided on the pump cover, one end of the fixing bolt passes through the pump cover, and one end of the fixing bolt passes through the pump cover and is connected to the pump body.

[0019] Through the above technical solution, one end of the fixing bolt passes through the pump cover and is connected to the pump body, which improves the convenience of disassembling the pump cover on the one hand, and improves the convenience of impeller maintenance on the other hand.

[0020] Furthermore, the frame is provided with a shock-absorbing pad, the shock-absorbing pad is installed on the frame, and the frame is provided with a mounting bolt, one end of the mounting bolt passes through the frame and the shock-absorbing pad in sequence.

[0021] Through the above technical solution, the shock-absorbing pad is connected to the frame, and one end of the mounting bolt passes through the frame. During installation, the frame is fixed by the mounting bolt, thereby improving the stability of the frame.

[0022] In summary, the present application includes at least one of the following beneficial technical effects of the sealing structure of a water pump:

[0023] 1. Connect the external pipeline to the inlet pipe and outlet pipe of the pump body, then drive the motor to drive the rotating rod to rotate, and the rotating rod drives the impeller to rotate in the pump body. As the impeller rotates, the liquid enters from the inlet pipe and then flows out from the outlet pipe. When the liquid flows through the pump body, the sealing component seals the ends of the inlet pipe and the outlet pipe, thereby preventing a gap from appearing at the connection between the inlet pipe and the outlet pipe, and preventing the pump body from leaking during use;

[0024] 2. The meshing between the driving gear and the driven gear, as well as the shock-absorbing pads on the frame, can reduce the vibration of the pump body during operation;

[0025] 3. The sealing performance of the pump body is improved by setting the sealing ring and sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a sealing structure of a water pump mainly embodied in this embodiment;

[0027] Figure 2 This is a schematic diagram of the explosion of the overall structure of the water pump mainly embodied in this embodiment;

[0028] Figure 3 This is a schematic diagram of the explosion of the pump structure mainly embodied in this embodiment;

[0029] Figure 4 yes Figure 2 An enlarged schematic diagram of a local portion A;

[0030] Figure 5 It is a schematic diagram of the structure of a water pump in the prior art.

[0031] Figure numerals: 1, frame; 11, shock-absorbing pad; 12, mounting bolt; 2, pump body; 21, liquid inlet pipe; 22, liquid outlet pipe; 23, impeller; 24, rotating rod; 25, first positioning groove; 26, sealing strip; 3, pump cover; 31, fixing bolt; 32, second positioning groove; 4, sealing assembly; 41, sealing ring; 42, mounting groove; 43, tightening spring; 44, first sealing part; 45, second sealing part; 5, driving assembly; 51, driving motor; 52, driving gear; 53, driven gear;

[0032] 100, base; 200, centrifugal pump; 300, rotating wheel; 301, lower cover plate; 3011, water inlet; 302, upper cover plate; 3021, water outlet; 303, blades; 400, electric machine. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0034] In the description of the present invention, it should be understood that the terms "lateral", "longitudinal", "end", "edge", "sidewall", "up", "down", "upper part", "lower part", "directly above", "surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "end", "head" and "tail" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solution of the present invention and simplifying the description, and do not indicate or imply that the device or element 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.

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] An embodiment of the present application discloses a sealing structure of a water pump.

[0037] Reference Figure 1-Figure 2 A sealing structure of a water pump includes a frame 1, a pump body 2 and a pump cover 3 are arranged on the frame 1, the pump cover 3 covers the pump body 2, and the pump body 2 is provided with a liquid inlet pipe 21 and a liquid outlet pipe 22, the liquid inlet pipe 21 and the liquid outlet pipe 22 are both connected to the pump body 2, and the liquid inlet pipe 21 and the liquid outlet pipe 22 of the pump body 2 are both provided with a sealing component 4. An impeller 23 and a rotating rod 24 are arranged in the pump body 2, and a driving component 5 is arranged on one side of the frame 1.

[0038] Before use, the pump body 2 is installed through the frame 1, and then the external pipeline is connected to the liquid inlet pipe 21 and the liquid outlet pipe 22 of the pump body 2. When in use, the driving component 5 drives the impeller 23 to rotate through the rotating rod 24. During the rotation of the impeller 23, the liquid enters from the liquid inlet pipe 21 of the pump body 2, and then the liquid flows out from the liquid outlet pipe 22 through the rotation of the impeller 23. When the pump body 2 is in use, the sealing component 4 seals the gap between the liquid inlet pipe 21, the liquid outlet pipe 22 and the external pipeline.

[0039] The frame 1 is rectangular in shape as a whole, and one side of the frame 1 in the width direction is open, while the width direction of the frame 1 is vertical. Furthermore, shock-absorbing pads 11 are provided at both ends of the frame 1, and the shock-absorbing pads 11 are connected to the frame 1, and mounting bolts 12 are provided at both ends of the length direction of the frame 1, and two mounting bolts 12 are provided on each side of the length direction of the frame 1. One end of the mounting bolt 12 passes through the frame 1 and the shock-absorbing pad 11 in sequence. When the frame 1 is installed, the mounting bolt 12 passes through one end of the frame 1 and is connected to the fixing seat. As the fixing bolt 31 rotates, the shock-absorbing pad 11 between the frame 1 and the fixing seat is squeezed. In this way, the shock-absorbing pad 11 can improve the stability of the installation of the frame 1 on the one hand, and can reduce the vibration of the pump body 2 installed on the frame 1 on the other hand.

[0040] The pump body 2 is detachably mounted on the upper side of the frame 1 in the width direction, and the pump cover 3 covers the pump body 2, and the pump cover 3 is provided with fixing bolts 31, and four fixing bolts 31 are evenly spaced on the pump cover 3, one end of the four fixing bolts 31 passes through the pump cover 3, and one end of the four fixing bolts 31 passing through the pump cover 3 is threadedly connected to the pump body 2. This improves the convenience of repairing the impeller 23.

[0041] Reference Figure 3-Figure 4, further, in order to prevent the liquid in the pump body 2 from flowing out from the gap between the pump body 2 and the pump cover 3. Therefore, a first positioning groove 25 is provided on the pump body 2, and the first positioning groove 25 is in the shape of a circular ring as a whole, and the cross-section of the first positioning groove 25 is a semicircular structure. A second positioning groove 32 is provided on the pump cover 3, and the second positioning groove 32 is in the shape of a circular ring as a whole, and the cross-section of the second positioning groove 32 is a semicircular structure. When the pump cover 3 covers the pump body 2, the cross-section of the first positioning groove 25 and the second positioning groove 32 combined together is circular. A sealing strip 26 is provided between the pump body 2 and the pump cover 3, and the sealing strip 26 is embedded between the first positioning groove 25 and the second positioning groove 32, and the gap between the pump body 2 and the pump cover 3 is sealed by the sealing strip 26.

[0042] The impeller 23 is rotatably mounted in the pump body 2, one end of the rotating rod 24 is connected to the impeller 23, and the other end passes through the pump body 2, and the rotating rod 24 passes through the frame 1. The driving assembly 5 includes a driving motor 51, which is horizontally arranged as a whole, and is mounted on a fixed seat close to one side of the frame 1, and a driving gear 52 is mounted on the output shaft of the driving motor 51, and a driven gear 53 is mounted on one end of the rotating rod 24 passing through the frame 1, and the driving gear 52 is meshed with the driven gear 53. When in use, the driving motor 51 drives the driving gear 52 to rotate, and because the driving gear 52 is meshed with the driven gear 53, during the rotation of the driving gear 52, the driven gear 53 is driven to rotate, and the driven gear 53 drives the rotating rod 24 to rotate, and the rotating rod 24 drives the impeller 23 to rotate.

[0043] When in use, since the driving motor 51 is not directly mounted on the frame 1, and the driving motor 51 drives the impeller 23 to rotate through the meshing of the driving gear 52 and the driven gear 53, the vibration generated by the driving motor 51 during the rotation of the impeller 23 in the pump body 2 can be greatly reduced and transmitted to the impeller 23 through the rotating rod 24.

[0044] Furthermore, in order to enable the impeller 23 to rotate quickly in the pump body 2, a drive motor 51 is provided on each side of the frame 1, and the two drive motors 51 are arranged opposite to each other, and the driving gears 52 on the two drive motors 51 are meshed with the driven gear 53 on the rotating rod 24. When in use, the impeller 23 is driven to rotate by the two drive motors 51, so that the rotation efficiency of the impeller 23 in the pump body 2 is improved, and the transmission efficiency of the pump body 2 for the liquid is greatly improved.

[0045] When the pump body 2 is conveying liquid, a large amount of liquid enters from the liquid inlet pipe 21, and then flows out from the liquid outlet pipe 22 after being conveyed by the impeller 23. In order to improve the sealing performance between the liquid inlet pipe 21, the liquid outlet pipe 22 and the external pipeline, the sealing assembly 4 includes a sealing ring 41, which corresponds to the liquid inlet pipe 21 and the liquid outlet pipe 22, and one end of the liquid inlet pipe 21 and the liquid outlet pipe 22 is provided with a mounting groove 42, and a tightening spring 43 is arranged in the mounting groove 42 of the liquid inlet pipe 21 and the liquid outlet pipe 22, one end of the tightening spring 43 is connected to the corresponding liquid inlet pipe 21 and the liquid outlet pipe 22, and the other end is connected to the corresponding sealing ring 41. When the external pipeline is connected to the liquid inlet pipe 21 and the liquid outlet pipe 22, the tightening spring 43 presses the sealing ring 41 against the external pipeline.

[0046] Furthermore, a first sealing portion 44 and a second sealing portion 45 are formed on the sealing ring 41. When the external pipeline is connected to the liquid inlet pipe 21 and the liquid outlet pipe 22, the first sealing portion 44 is pressed tightly between the liquid inlet pipe 21, the liquid outlet pipe 22 and the external pipeline, and the second sealing portion 45 is pressed tightly against the inner wall of the corresponding liquid inlet pipe 21 and the liquid outlet pipe 22. The sealing ring 41 is used to seal the gap between the liquid inlet pipe 21, the liquid outlet pipe 22 and the corresponding external pipeline, so that the sealing performance of the pump body 2 is improved to prevent the pump body 2 from leaking during use.

[0047] The implementation principle of the sealing structure of a water pump in an embodiment of the present application is as follows: before use, one end of the external pipe connection is connected to the liquid inlet pipe 21 and the liquid outlet pipe 22 of the pump body 2, and the sealing ring 41 is tightly pressed against the liquid inlet pipe 21, the liquid outlet pipe 22 and the corresponding external pipe. When in use, the driving motor 51 drives the driving gear 52 to rotate, the driving gear 52 drives the driven gear 53 to rotate, and the driven gear 53 drives the rotating rod 24 to rotate. During the rotation of the rotating rod 24, the impeller 23 rotates with the rotating rod 24. As the impeller 23 rotates, the liquid enters from the liquid inlet pipe 21 of the pump body 2, and finally the liquid flows out from the liquid outlet pipe 22.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sealing structure for a water pump, comprising a frame (1), a pump body (2) being mounted on the frame (1), a pump cover (3) being provided on the upper cover of the pump body (2), an impeller (23) being rotatably mounted on a side of the pump body (2) close to the pump cover (3), and a liquid inlet pipe (21) and a liquid outlet pipe (22) being provided on the pump body (2), characterized in that: A rotating rod (24) is rotatably mounted on the pump body (2), the impeller (23) is mounted on the rotating rod (24), and one end of the rotating rod (24) passes through the pump body (2); a driving component (5) is arranged at one end of the frame (1) close to the rotating rod (24), and the driving component (5) drives the rotating rod (24) to rotate; The liquid inlet pipe (21) and the liquid outlet pipe (22) of the pump body (2) are provided with sealing components (4), and the sealing components (4) seal the ends of the liquid inlet pipe (21) and the liquid outlet pipe (22).

2. A sealing structure for a water pump according to claim 1, characterized in that: The driving assembly (5) comprises a driving motor (51), the driving motor (51) being mounted on one side of the frame (1), and a driving gear (52) being arranged on the output shaft of the driving motor (51), and a driven gear (53) being arranged on the rotating rod (24), and the driving gear (52) and the driven gear (53) being meshed with each other.

3. A sealing structure for a water pump according to claim 1, characterized in that: The sealing assembly (4) comprises a sealing ring (41), one end of each of the liquid inlet pipe (21) and the liquid outlet pipe (22) is provided with a mounting groove (42), a clamping spring (43) is provided between the sealing ring (41) and the mounting groove (42), and two ends of the clamping spring (43) are respectively connected to the corresponding liquid inlet pipe (21), the liquid outlet pipe (22) and the sealing ring (41).

4. A sealing structure for a water pump according to claim 3, characterized in that: The sealing ring (41) is formed with a first sealing portion (44) and a second sealing portion (45); the first sealing portion (44) contacts the ends of the liquid inlet pipe (21) and the liquid outlet pipe (22); and the second sealing portion (45) contacts the inner walls of the liquid inlet pipe (21) and the liquid outlet pipe (22).

5. The sealing structure of a water pump according to claim 1, characterized in that: The pump body (2) is provided with a first positioning groove (25), the pump cover (3) is provided with a second positioning groove (32), the second positioning groove (32) corresponds to the first positioning groove (25), and a sealing strip (26) is provided between the pump body (2) and the pump cover (3), the sealing strip (26) is embedded between the first positioning groove (25) and the second positioning groove (32).

6. A sealing structure for a water pump according to claim 1, characterized in that: The pump cover (3) is provided with a fixing bolt (31), one end of the fixing bolt (31) passes through the pump cover (3), and one end of the fixing bolt (31) passes through the pump cover (3) and is connected to the pump body (2).

7. The sealing structure of a water pump according to claim 1, characterized in that: The frame (1) is provided with a shock-absorbing pad (11), the shock-absorbing pad (11) is mounted on the frame (1), and the frame (1) is provided with a mounting bolt (12), one end of the mounting bolt (12) passes through the frame (1) and the shock-absorbing pad (11) in sequence.

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