Double-impeller parallel self-priming water pump

Abstract

The application relates to the field of non-variable volume pumps, in particular to a double-impeller parallel type self-priming water pump. The double-impeller parallel type self-priming water pump comprises a water pump shell, a rotating shaft in the front-rear direction is rotationally connected to the water pump shell, an impeller one and an impeller two are fixed on the rotating shaft, a plurality of blades one are arranged on the impeller one, a plurality of blades two are arranged on the impeller two, and the blades one are larger than the blades two. The upper side and the right side of the water pump shell are both provided with box boxes, two joint pipes are arranged on each box box, and a threaded cover is threadedly connected to each joint pipe. The rear end of the rotating shaft is fixed with a shaft coupling. The front side of the water pump shell is open, a cover plate is arranged on the front side of the water pump shell, a plurality of screw rods are fixed in an annular mode on the rear side of the cover plate, the circular ring is located on the rear side of the water pump shell, a plurality of convex plates are fixed in an annular mode on the circular ring, and the plurality of screw rods are respectively inserted into the plurality of convex plates. The problem that flow and lift are difficult to consider in the traditional double-impeller equal-size design is solved, and the water pump has higher adaptability under complex working conditions.

Description

Technical Field

[0001] This invention relates to the field of non-variable displacement pumps, and more specifically to a dual-impeller parallel self-priming water pump. Background Technology

[0002] The parallel-type self-priming pump with two impellers is a fluid transport device that can balance flow rate and head output, and is widely used in agricultural irrigation, municipal drainage, and industrial circulation. Its core principle is to drive two impellers to rotate synchronously through a single shaft, utilizing the synergistic effect of the two impellers to improve overall performance. In existing technologies, the two impellers of parallel-type self-priming pumps are usually designed with equal dimensions. While this design can increase flow rate or head through the synergistic work of the two impellers, its structural limitations are significant: the performance curves of equal-sized impellers are fixed and cannot dynamically adapt to changes in operating conditions. For example, in irrigation systems, when water is distributed from the main channel to branch pipes in the field, the main channel requires a large flow rate and low head, while the branch pipes supplying water to raised-ridge crops require a small flow rate and high head. Traditional equal-sized parallel-type impeller pumps require frequent shutdowns to replace impellers or the addition of speed control devices, which is not only cumbersome to operate but also increases equipment costs and energy consumption. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a parallel self-priming water pump with two impellers. Its beneficial effect is that it solves the problem of difficulty in balancing flow rate and head in traditional dual impeller equal-size designs, making the water pump more adaptable to complex working conditions.

[0004] A parallel self-priming water pump with two impellers includes a pump casing. A rotating shaft in the front-to-back direction is rotatably connected to the pump casing. Impeller 1 and impeller 2 are fixed on the rotating shaft. Impeller 1 is provided with multiple blades 1, and impeller 2 is provided with multiple blades 2. Blade 1 is larger than blade 2.

[0005] The pump casing has boxes on its upper and right sides, and each box has two connector pipes, each connector pipe having a threaded cap connected by threads.

[0006] A coupling is fixed to the rear end of the rotating shaft.

[0007] The front side of the water pump housing is open, and a cover plate is provided on the front side of the water pump housing. Multiple screws are fixed in a ring on the rear side of the cover plate. The ring is located on the rear side of the water pump housing, and multiple protrusions are fixed in a ring on the ring. The multiple screws are inserted into the multiple protrusions respectively, and the rear end of each screw is connected to a nut by a thread.

[0008] Two arc blocks are fixed to the rear side of the pump casing, and the two arc blocks fit into the left and right sides of the inner ring of the circular ring.

[0009] Each said box is fixed with a rail rod, the rail rod is slidably connected with a fixing seat, the fixing seat is slidably connected with two pipes, the end of the pipe is provided with a ring groove, the lower side of the two pipes is fixed with a convex rib, and the convex rib is slidably connected on the fixing seat.

[0010] The fixing seat is fixed with a cylinder one, and the movable end of the cylinder one is fixed on the end of the rail rod.

[0011] The middle part of the fixing seat is fixed with a middle shaft, the middle part of the lever is rotatably connected to the upper part of the middle shaft, both ends of the lever are provided with long holes, the upper side of each pipe is fixed with a round rod, the two round rods are respectively inserted into the two long holes, the fixing seat is fixed with a cylinder two, and the movable end of the cylinder two is fixed on one of the pipes.

[0012] The two boxes are fixed with an arc ring, the arc panel is attached to the right side of the arc ring, the upper and lower ends of the left side of the arc panel are provided with two protrusions, a pin is inserted between the two protrusions at the upper end and between the two protrusions at the lower end, the two pins are in contact with the left side of the arc ring, square columns are fixed at the front and rear ends of the arc panel, the left part of the chassis is provided with a slide rail, the lower ends of the two carriages are slidably connected to the slide rail, the upper ends of the two carriages are respectively inserted into the two square columns, the lower part of each carriage is threadedly connected with a fastening screw, and the fastening screw is pressed on the slide rail. A tab is fixed on one of the carriages, a hand screw is threadedly connected to the tab, and the hand screw is pressed on the left side of the arc panel.

[0013] The chassis is rotatably connected with a rotating wheel, the rotating wheel is in contact with the lower side of the arc panel, and the middle part of the rotating wheel is fixed with two limiting rings.

[0014] The beneficial effects of the double-impeller parallel self-priming water pump are:

[0015] The problem that flow and head are difficult to consider in traditional double-impeller equal-size design is solved, and the adaptability of the water pump under complex working conditions is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described in detail below in combination with the drawings and specific implementation methods.

[0017] Figure 1 Structure diagram of the double-impeller parallel self-priming water pump Figure 1 ;

[0018] Figure 2 Structure diagram of the double-impeller parallel self-priming water pump Figure 2 ;

[0019] Figure 3 Structure diagram of the double-impeller parallel self-priming water pump Figure 3 ;

[0020] Figure 4 Structure diagram of double-impeller parallel self-priming water pump Figure 4 ;

[0021] Figure 5 Structure diagram of water pump shell Figure 1 ;

[0022] Figure 6 Structure diagram of water pump shell Figure 2 ;

[0023] Figure 7 Structure diagram of rotating shaft Figure 1 ;

[0024] Figure 8 Structure diagram of rotating shaft Figure 2 ;

[0025] Figure 9 Structure diagram of cover plate Figure 1 ;

[0026] Figure 10 Structure diagram of cover plate Figure 2 ;

[0027] Figure 11 Structure diagram of fixing seat Figure 1 ;

[0028] Figure 12 Structure diagram of fixing seat Figure 2 ;

[0029] Figure 13 Structure diagram of bottom frame

[0030] Figure 14 Structure diagram of arc plate Figure 1 ;

[0031] Figure 15 Structure diagram of arc plate Figure 2 ;

[0032] In the figure: water pump shell 101; threaded cover 102; joint pipe 103; box 104; arc ring 105; arc block 106;

[0033] Rotating shaft 201; blade one 202; impeller one 203; coupling 204; impeller two 205; blade two 206;

[0034] Cover plate 301; screw 302; convex plate 303; circular ring 304;

[0035] Fixing seat 401; cylinder one 402; pipeline 403; cylinder two 404; lever 405; round rod 406; middle shaft 407; ring groove 408; track rod 409; convex rib 410;

[0036] Chassis 501; slide 502; slide rail 503; hand screw 504; tab 505; rotating wheel 506; limit ring 507;

[0037] Arc panel 601; square column 602; protruding block 603; bolt 604. DETAILED DESCRIPTION

[0038] As Figures 5-8 shown;

[0039] Due to the double-impeller parallel self-priming pump, comprising a pump shell 101, a front-to-back rotating shaft 201 is connected to the pump shell 101, an impeller one 203 and an impeller two 205 are fixed on the rotating shaft 201, a plurality of blades one 202 are arranged on the impeller one 203, a plurality of blades two 206 are arranged on the impeller two 205, and the blades one 202 are larger than the blades two 206; the impeller one 203 and the impeller two 205 are driven to rotate synchronously by the rotating shaft 201, and because the blades one 202 are larger than the blades two 206, the impeller one 203 can provide a larger liquid delivery capacity, and the impeller two 205 can generate higher liquid pressure. The two work together to ensure a certain flow output when the double-impeller parallel works, and the pressure increase of the impeller two 205 makes up for the insufficient head of the large-size blades, thereby balancing the flow and head and improving the adaptability of the pump under complex working conditions.

[0040] As Figures 5-6 shown;

[0041] Because the upper side and the right side of the pump shell 101 are provided with box boxes 104, two joint pipes 103 are arranged on each box box 104, and a threaded cover 102 is threadedly connected to each joint pipe 103. The two joint pipes 103 on the box box 104 are aligned with the plurality of blades one 202 and the plurality of blades two 206, respectively, and the two joint pipes 103 on the box box 104 correspond to the blades one 202 of the impeller one 203 and the blades two 206 of the impeller two 205, respectively, to form independent fluid channels: the joint pipe 103 aligned with the blades one 202 can specially transport large-flow liquid generated by large-size blades, and the joint pipe 103 aligned with the blades two 206 is used to transport high-lift liquid generated by small-size blades. Through this corresponding design, the output fluids of the two impellers can be divided or combined in the box box 104; when it is needed to use the large-flow or high-lift function alone, the corresponding unnecessary joint pipe 103 can be closed by the threaded cover 102, so that the liquid is output only from the target channel; when it is needed to use both functions at the same time, opening both joint pipes 103 can make the two fluids combine in the box box 104, forming a composite output considering both flow and head. The threaded cover 102 realizes the sealing and opening of the joint pipe 103 through threaded connection, ensuring the controllability of the liquid delivery path and flexibly adapting the fluid output demand under different working conditions.

[0042] As shown in Figures 7-8 ;

[0043] The rear end of the rotating shaft 201 is fixed with a coupling 204. The coupling 204 is fixed at the rear end of the rotating shaft 201, used for transmitting power from an external power source to the rotating shaft 201, so that the rotating shaft 201 obtains rotating power, and then drives the impeller one 203 and the impeller two 205 to rotate, realizing the water pumping function of the water pump, and playing a bridge role of connecting the power source and the rotating shaft 201.

[0044] As shown in Figures 5-6 and 9-10;

[0045] The front side of the water pump shell 101 is open, and the front side of the water pump shell 101 is provided with a cover plate 301, the rear side of the cover plate 301 is annularly fixed with a plurality of screw rods 302, a circular ring 304 is located at the rear side of the water pump shell 101, a plurality of convex plates 303 are annularly fixed on the circular ring 304, and the plurality of screw rods 302 are respectively inserted on the plurality of convex plates 303. The rear end of each screw rod 302 is threadedly connected with a nut; the cover plate 301 is used for closing the front side of the water pump shell 101 to prevent liquid from leaking from the front side of the water pump shell 101. The plurality of screw rods 302 on the rear side of the cover plate 301 are inserted on the convex plates 303 of the circular ring 304, and the cover plate 301 and the circular ring 304 can be fixed together by tightening the nuts at the rear ends of the screw rods 302, so as to tightly install the cover plate 301 on the front side of the water pump shell 101, ensure the sealing of the inside of the water pump shell 101, and facilitate the disassembly and installation of the cover plate 301, so as to maintain the internal components of the water pump.

[0046] As shown in Figures 5-6 and 9-10;

[0047] The rear side of the water pump shell 101 is fixed with two arc blocks 106, and the two arc blocks 106 are fitted with the left and right sides of the inner circle of the circular ring 304. The two arc blocks 106 on the rear side of the water pump shell 101 are fitted with the left and right sides of the inner circle of the circular ring 304. When the circular ring 304 is installed, the arc block 106 can play a positioning and guiding role for the circular ring 304, ensure the accuracy of the installation position of the circular ring 304, and enhance the stability of the connection between the circular ring 304 and the water pump shell 101, preventing the circular ring 304 from deviating during the working process of the water pump.

[0048] As shown in Figures 5-6 and 11-12;

[0049] Since each of the boxes 104 is fixed with a rail rod 409, the rail rod 409 is slidably connected with a fixing seat 401, the fixing seat 401 is slidably connected with two pipes 403, the end of the pipe 403 is provided with a ring groove 408, the lower side of the two pipes 403 is fixed with a convex rib 410, the convex rib 410 is slidably connected on the fixing seat 401; the rail rod 409 provides a sliding track for the fixing seat 401, so that the fixing seat 401 can move along the rail rod 409 to adjust the position to adapt to different pipe connection requirements. The two pipes 403 on the fixing seat 401 can slide along the convex rib 410, the ring groove 408 at the end of the pipe 403 facilitates the connection with the joint pipe 103 or other external pipe, and the pipe 403 can be slid to realize the butt joint and separation of the pipe, thereby improving the flexibility of the pipe connection.

[0050] As shown in Figures 11-12 ;

[0051] Since the fixing seat 401 is fixed with a cylinder one 402, the movable end of the cylinder one 402 is fixed at the end of the rail rod 409, and the fixed end of the cylinder one 402 is installed on the fixing seat 401. The movable end is fixed at the end of the rail rod 409. Through the extension and retraction action of the cylinder one 402, the fixing seat 401 can be automatically slid along the rail rod 409, realizing the automatic adjustment of the position of the fixing seat 401, without manual moving, thereby improving the convenience and efficiency of operation.

[0052] As shown in Figures 11-12 ;

[0053] Since the middle part of the fixing seat 401 is fixed with a middle shaft 407, the middle part of the lever 405 is rotatably connected to the upper part of the middle shaft 407, and the two ends of the lever 405 are provided with long holes. The upper side of each pipe 403 is fixed with a round rod 406, the two round rods 406 are respectively inserted into the two long holes, the fixing seat 401 is fixed with a cylinder two 404, and the movable end of the cylinder two 404 is fixed on one of the pipes 403. When the cylinder two 404 extends and retracts, the pipe 403 connected with the cylinder two 404 slides along the convex rib 410, and the round rod 406 on the pipe 403 moves in the long hole at one end of the lever 405. Since the middle part of the lever 405 is rotatably connected to the middle shaft 407, the round rod 406 in the long hole at the other end of the lever 405 will move, thereby causing the other pipe 403 to slide reversely along the convex rib 410. Through this linkage mode, the synchronous reverse movement of the two pipes 403 is realized, which is convenient for simultaneously butt jointing or separating with two joint pipes 103, thereby improving the coordination of pipe operation. At the same time, the synchronous movement of the two pipes 403 can also be realized by moving the fixing seat 401 to drive the two pipes 403 to move synchronously, so that the two pipes 403 are synchronously butt jointed.

[0054] As shown in Figures 5-6 and 13-15;

[0055] Since the arc ring 105 is fixed between the two boxes 104, the arc panel 601 is attached to the right side of the arc ring 105, the upper and lower ends of the left side of the arc panel 601 are provided with two protrusions 603, and a pin 604 is inserted between the two protrusions 603 at the upper end and the two protrusions 603 at the lower end. Both pins 604 are in contact with the left side of the arc ring 105, and square columns 602 are fixed to the front and rear ends of the arc panel 601. The left part of the chassis 501 is provided with a slide rail 503, and the lower ends of the two carriages 502 are slidably connected to the slide rail 503. The upper ends of the two carriages 502 are respectively inserted into the two square columns 602. The lower part of each carriage 502 is connected by a threaded fastener, and the threaded fastener is pressed on the slide rail 503. One of the carriages 502 is fixed with a tab 505, and the tab 505 is connected with a hand screw 504 by a threaded connection, and the hand screw 504 is pressed on the left side of the arc panel 601.

[0056] The arc panel 601 is attached to the right side of the arc ring 105, and the arc panel 601 is preliminarily fixed on the arc ring 105 by the contact of the pin 604 with the left side of the arc ring 105. The slide rail 503 of the chassis 501 provides sliding support for the carriage 502. The upper end of the carriage 502 is inserted into the square column 602, and the threaded fastener can fix the position of the carriage 502, thereby fixing the upper and lower positions of the arc panel 601. The hand screw 504 is pressed on the left side of the arc panel 601, which can further press the arc panel 601 on the arc ring 105, and at the same time facilitate the adjustment of the fixing force of the arc panel 601. This structure can enhance the stability of the connection between the water pump and the chassis 501.

[0057] The arc ring 105 is fixed as a whole with the water pump shell 101, and the arc panel 601 is in contact with the left side of the arc ring 105 through the pin 604 between the protrusions 603 on the left side, forming an arc-shaped matching structure that can rotate relatively. When the angle needs to be adjusted, loosen the threaded fastener at the lower part of the carriage 502 and the hand screw 504 on the tab 505, and the arc ring 105 can drive the water pump shell 101 to rotate around the arc-shaped contact surface of the arc panel 601. After the angle is adjusted to the target position, tighten the hand screw 504 to press the left side of the arc panel 601, realizing the angle locking of the water pump shell 101 and the joint pipe 103. This design allows the water pump shell 101 to be flexibly adjusted within the arc-shaped track, so that the joint pipe 103 can adapt to the connection requirements of external pipelines in different directions, especially in the scene where the space is limited or the pipeline layout is complex, which can greatly improve the installation flexibility and pipeline docking efficiency.

[0058] As shown in FIGS. Figures 5-6 and 13;

[0059] Since the bottom frame 501 is rotationally connected with the rotating wheel 506, the rotating wheel 506 is in contact with the lower side of the arc panel 601, the middle part of the rotating wheel 506 is fixed with two limiting rings 507, the two limiting rings 507 are located at the front and back of the arc ring 105 respectively, the rotating wheel 506 on the bottom frame 501 is in contact with the lower side of the arc panel 601, can support the arc panel 601, reduce the friction between the arc panel 601 and the bottom frame 501, and facilitate the rotation adjustment of the arc panel 601. The two limiting rings 507 in the middle part of the rotating wheel 506 are located at the front and back of the arc ring 105, can limit the displacement of the arc ring 105 and the arc panel 601 in the front and back directions, ensure the stability of the position, and prevent the front and back shaking during the working process of the water pump.

Claims

1. A self-priming water pump with two impellers in parallel, comprising a pump casing (101), characterized in that: The pump casing (101) is rotatably connected to a rotating shaft (201) in the front-to-back direction. Impeller 1 (203) and impeller 2 (205) are fixed on the rotating shaft (201). Impeller 1 (203) is provided with multiple blades 1 (202), and impeller 2 (205) is provided with multiple blades 2 (206). Blade 1 (202) is larger than blade 2 (206). The pump housing (101) is provided with a box (104) on the upper and right sides. Each box (104) is provided with two connector pipes (103). Each connector pipe (103) is connected to a threaded cap (102) by thread. The rear end of the rotating shaft (201) is fixed with a coupling (204). The front side of the water pump housing (101) is open, and a cover plate (301) is provided on the front side of the water pump housing (101). Multiple screws (302) are fixed in a ring on the rear side of the cover plate (301). A ring (304) is located on the rear side of the water pump housing (101). Multiple protrusions (303) are fixed in a ring on the ring (304). Multiple screws (302) are inserted into multiple protrusions (303) respectively. The rear end of each screw (302) is connected to a nut by a thread. Two arc blocks (106) are fixed to the rear side of the pump housing (101), and the two arc blocks (106) are in contact with the left and right sides of the inner ring (304); Each of the boxes (104) is fixed with a track rod (409), and a fixed seat (401) is slidably connected to the track rod (409). Two pipes (403) are slidably connected to the fixed seat (401). The ends of the pipes (403) are provided with annular grooves (408). The lower sides of the two pipes (403) are fixed with protrusions (410), and the protrusions (410) are slidably connected to the fixed seat (401). A cylinder (402) is fixed on the fixed base (401), and the movable end of the cylinder (402) is fixed to the end of the track rod (409); The middle part of the fixed base (401) is fixed with a central shaft (407), the middle part of the lever (405) is rotatably connected to the upper part of the central shaft (407), both ends of the lever (405) are provided with elongated holes, and a round rod (406) is fixed on the upper side of each pipe (403). The two round rods (406) are respectively inserted into the two elongated holes. A cylinder two (404) is fixed on the fixed base (401), and the movable end of the cylinder two (404) is fixed on one of the pipes (403). An arc ring (105) is fixed between the two boxes (104). An arc panel (601) fits against the right side of the arc ring (105). Two protrusions (603) are provided at the upper and lower ends of the left side of the arc panel (601). A pin (604) is inserted between the two upper protrusions (603) and between the two lower protrusions (603). Both pins (604) are in contact with the left side of the arc ring (105). Square posts (602) are fixed at both the front and rear ends of the arc panel (601). The left side of the base frame (501) The slide rail (503) is provided, and the lower ends of the two slides (502) are slidably connected to the slide rail (503). The upper ends of the two slides (502) are respectively inserted into two square posts (602). The lower part of each slide (502) is connected to a fastening screw by thread, and the fastening screw presses on the slide rail (503). One of the slides (502) is fixed with a protrusion (505), and a hand screw (504) is connected to the protrusion (505) by thread. The hand screw (504) presses on the left side of the arc panel (601).

2. The self-priming water pump with dual impellers in parallel according to claim 1, characterized in that: A rotating wheel (506) is rotatably connected to the base frame (501). The rotating wheel (506) is in contact with the lower side of the arc panel (601). Two limiting rings (507) are fixed in the middle of the rotating wheel (506). The two limiting rings (507) are located on the front and rear sides of the arc ring (105) respectively.

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