Lightweight oil-immersed deep-well pump

Abstract

The invention relates to the technical field of deep-well pumps, in particular to a light-weight oil-immersed deep-well pump which comprises an oil seal outer cylinder with a built-in oil-filled permanent magnet motor, a sealing cover is arranged at the top of the oil seal outer cylinder and provided with a sealing bearing, an inner ring of the sealing bearing is connected with a rotating shaft of the oil-filled permanent magnet motor, and a supporting frame is arranged on the sealing cover. A shell is arranged on the supporting frame, an inner container is arranged in the shell, an impeller and a guide vane which are connected with a rotating shaft are arranged in the inner container, a rubber shaft sleeve is arranged at the top of the rotating shaft, the rubber shaft sleeve is sleeved with the guide vane, an upper pump base and a lower pump base are arranged at the upper end and the lower end of the inner container respectively, and the upper end and the lower end of the inner container are connected with the lower end of the upper pump base and the upper end of the lower pump base respectively. The lower end of the lower pump base is connected with the supporting frame, the upper end of the upper pump base is connected with a water outlet sleeve opening, the impeller, the guide vane and the inner container are all made of hard plastics, and the problems that the working efficiency of the oil-immersed deep-well pump is reduced and the oil-immersed deep-well pump is inconvenient to install due to the weight of the oil-immersed deep-well pump due to the fact that the guide vane and the impeller which are conventionally arranged are made of cast iron materials are solved.

Description

Technical Field

[0001] The invention relates to the technical field of deep well pumps, and in particular to a lightweight oil-immersed deep well pump. Background Art

[0002] The biggest feature of deep well pump is that the motor and pump are made into one. It is a kind of pump immersed in groundwater wells to suck and transport water. It is widely used in farmland irrigation and drainage, industrial and mining enterprises, urban water supply and drainage, and sewage treatment. Because the motor is also submerged in water, the structural requirements for the motor are more special than those for general motors. The structural forms of the motor are divided into three types: dry type, oil-filled type, and water-filled type.

[0003] When the oil-immersed deep well pump is working, the impeller is driven by the motor to rotate, and the water flow is guided and controlled by the guide vanes. The conventional guide vanes and impellers are made of cast iron. While increasing the weight of the oil-immersed deep well pump, the rough surface of cast iron also consumes part of the output power of the motor, reducing the efficiency of the oil-immersed deep well pump unit and making it inconvenient to install. Summary of the invention

[0004] The purpose of the present invention is to provide a lightweight oil-immersed deep well pump to solve the problem that the conventional guide vanes and impellers are made of cast iron, which reduces the working efficiency of the oil-immersed deep well pump and makes it inconvenient to install due to its own weight.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A lightweight oil-immersed deep well pump, comprising an oil-sealed outer cylinder with an oil-filled permanent magnet motor built in, a sealing cover being provided on the top of the oil-sealed outer cylinder, a sealing bearing being provided in the middle of the sealing cover, an inner ring of the sealing bearing being connected to the rotating shaft of the oil-filled permanent magnet motor, a supporting frame being provided on the sealing cover, a shell being provided on the supporting frame, an inner liner being provided in the outer shell, an impeller connected to the rotating shaft and a guide vane arranged above the impeller being provided in the inner liner, a rubber sleeve being provided on the top of the rotating shaft, the guide vane sleeve being provided on the rubber sleeve, an upper pump seat and a lower pump seat being provided at the upper and lower ends of the inner liner respectively, the upper and lower ends of the inner liner being connected to the lower end of the upper pump seat and the upper end of the lower pump seat respectively, the lower end of the lower pump seat being connected to the supporting frame, the upper end of the upper pump seat being connected to a water outlet sleeve, and the impeller, the guide vane and the inner liner are all made of hard plastic.

[0006] A further technical solution is that a protruding outer edge is provided at the lower end of the sealing cover, the outer edge is clamped on the inner side of the top of the oil seal outer tube, and a plurality of equally spaced screws are provided along the circumference of the oil seal outer tube, the screw threads pass through the oil seal outer tube and are connected to the outer edge threads, and two first annular grooves spaced apart in an upper and lower manner are provided on the outer edge, and a first sealing ring is provided in each of the two first annular grooves.

[0007] A further technical solution is that the support frame includes an annular plate and four support beams vertically and equidistantly arranged at the lower end of the annular plate, the lower end of the support beam is connected to the sealing cover, and the sealing cover, support beam and annular plate are arranged as one body.

[0008] A further technical solution is that the lower end of the outer shell is sleeved on the lower pump seat, the annular plate and the lower pump seat are fixedly connected by bolts, and the outer shell and the lower pump seat are fixedly connected by screws; the upper pump seat is fixedly connected to the inner tank by bolts, and the outer walls of the upper pump seat and the lower pump seat are provided with a second annular groove, and a second sealing ring is provided in the second annular groove.

[0009] A further technical solution is that the impeller includes a wheel body, a circular ring is provided at the lower end of the wheel body, the lower end of the circular ring is arranged in a through hole in the middle of the lower pump seat, a plurality of spiral drainage ports are provided along the circumference of the wheel body, and the lower end of the drainage port is connected with the through hole, the guide vane includes a cover body arranged in an inverted bowl shape and a plurality of guide plates distributed in a circular array around the cover body, and the angle formed between the upper end surface of the guide plate and the cover body is an obtuse angle, a diversion port is formed between two adjacent guide plates and the cover body, and the diversion port is connected with the drainage port, and the water outlet sleeve is connected with the diversion port through a diversion channel arranged in the middle of the upper pump seat.

[0010] A further technical solution is that a water inlet is formed between the lower end of the annular plate, the upper end of the sealing cover and two adjacent support beams, a filter frame of a size matching the water inlet is provided at the water inlet, a filter screen is provided on the inner side of the filter frame, fixing columns are provided on both sides of the filter frame, grooves are provided at the upper and lower ends of the fixing columns, a compression spring is provided at the bottom of the groove, a clamping column is fixedly connected to one end of the compression spring away from the bottom of the groove, opening slots are provided at the upper and lower sides of the fixing column, and the opening slots are connected to adjacent grooves, a paddle plate is provided at the place where the compression spring and the clamping column are connected, and one end of the paddle plate away from the clamping column slides and extends to the outside of the opening slot, a plurality of first clamping holes and a second clamping holes are respectively provided on the annular plate and the sealing cover, and the clamping columns arranged at the upper and lower ends of the fixing column are respectively clamped in the first clamping hole and the second clamping hole.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The impeller, guide vane and inner tank are all made of hard plastic, which makes it easier for the motor to drive the impeller to rotate. While improving the working efficiency of the motor, it also reduces the weight of the entire device, making the product easy to carry and install outdoors.

[0012] 2. Separate the oil-filled permanent magnet motor and the impeller to ensure the sealing of the oil-filled permanent magnet motor in the oil seal outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The diagram is a structural diagram of a lightweight oil-immersed deep well pump according to the present invention.

[0014] Figure 2 It is a partial cross-sectional view of the oil immersed deep well pump of the present invention.

[0015] Figure 3 It is a partial cross-sectional view of the connection between the oil seal outer cylinder and the sealing cover in the present invention.

[0016] Figure 4 It is a partial cross-sectional view of the connection between the impeller and the inner tank in the present invention.

[0017] Figure 5 It is a top view of the filter frame in the present invention.

[0018] Figure 6 It is a schematic diagram of the connection between the clamping column and the fixing column in the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Embodiment 1: refer to Figures 1 to 6 As shown, a lightweight oil-immersed deep well pump is disclosed, comprising an oil-sealed outer cylinder 1 with an oil-filled permanent magnet motor built in, a sealing cover 2 is provided on the top of the oil-sealed outer cylinder 1, a sealing bearing 3 is provided in the middle of the sealing cover 2, the inner ring of the sealing bearing 3 is connected to the rotating shaft 4 of the oil-filled permanent magnet motor, a supporting frame is provided on the sealing cover 2, a shell 5 is provided on the supporting frame, an inner liner 6 is provided in the outer liner 5, an impeller 7 connected to the rotating shaft 4 is provided in the inner liner 6, and an impeller 7 arranged on the impeller The guide vane 8 above the wheel 7, the top of the rotating shaft 4 is provided with a rubber sleeve 9, the guide vane 8 is sleeved on the rubber sleeve 9, the upper and lower ends of the inner liner 6 are respectively provided with an upper pump seat 10 and a lower pump seat 11, the upper and lower ends of the inner liner 6 are respectively connected to the lower end of the upper pump seat 10 and the upper end of the lower pump seat 11, the lower end of the lower pump seat 11 is connected to the support frame, the upper end of the upper pump seat 10 is connected with a water outlet sleeve 12, the impeller 7, the guide vane 8, and the inner liner 6 are all made of hard plastic.

[0021] In the present invention, the impeller 7, the guide vane 8, and the inner tank 6 are all made of hard plastic, so that the motor can more easily drive the impeller 7 to rotate, which improves the working efficiency of the motor while reducing the weight of the entire device, so that the product has the advantages of being easy to carry outdoors, durable and easy to install. The oil-filled permanent magnet motor and the impeller 7 are separated to ensure the sealing of the oil-filled permanent magnet motor in the oil seal outer cylinder 1.

[0022] During installation, a gap is left between the impeller 7 and the guide vane 8 to prevent friction between the impeller 7 and the guide vane 8 during rotation, thereby reducing the output efficiency of the rotating shaft 4.

[0023] A protruding outer edge 13 is provided at the lower end of the sealing cover 2, and the outer edge 13 is clamped on the inner side of the top of the oil seal outer tube 1, and a plurality of screws 14 are equidistantly distributed along the circumference of the oil seal outer tube 1, and the screws 14 threadedly pass through the oil seal outer tube 1 and are threadedly connected to the outer edge 13, and two first annular grooves spaced apart from each other are provided on the outer edge 13, and a first sealing ring 15 is provided in each of the two first annular grooves.

[0024] Specifically, during installation, the outer edge 13 is first clamped on the inner side of the top of the oil seal outer tube 1, and then the screw 14 is threaded through the oil seal outer tube 1 and connected with the outer edge 13, so that the outer edge 13 and the oil seal outer tube 1 are fixedly connected, and then the oil seal outer tube 1 and the sealing cover 2 are fixedly connected. At the same time, two first annular grooves spaced apart from each other are provided on the outer edge 13, and first sealing rings 15 are provided in the two first annular grooves. The two first sealing rings 15 provide sealing stability for the connection between the outer edge 13 and the inner side of the top of the oil seal outer tube 1, so as to prevent the oil seal outer tube 1 from leaking through the connection with the outer edge 13.

[0025] Embodiment 2: The support frame includes an annular plate 16 and four support beams 17 vertically and equidistantly arranged at the lower end of the annular plate 16, the lower end of the support beam 17 is connected to the sealing cover 2, the sealing cover 2, the support beam 17 and the annular plate 16 are integrally arranged, the lower end of the outer shell 5 is sleeved on the lower pump seat 11, the annular plate 16 and the lower pump seat 11 are fixedly connected by bolts, and the outer shell 5 and the lower pump seat 11 are fixedly connected by screws 14; the upper pump seat 10 is fixedly connected to the inner tank 6 by bolts, and the outer walls of the upper pump seat 10 and the lower pump seat 11 are provided with a second annular groove, and a second sealing ring 18 is provided in the second annular groove.

[0026] The vertically arranged support beam 17 facilitates the isolation of the outer shell 5 and the oil seal outer cylinder 1. The sealing cover 2, the support beam 17 and the annular plate 16 are arranged as an integral whole, which is convenient for installation and can provide stability for the entire structure. The lower end of the outer shell 5 is sleeved on the lower pump seat 11, and the annular plate 16 and the lower pump seat 11 are fixedly connected by bolts, and the outer shell 5 and the lower pump seat 11 are fixedly connected by screws 14; the upper pump seat 10 is fixedly connected to the inner tank 6 by bolts, and the bolts mentioned in this application are all of the same size and type, and the screws 14 are all of the same size and type. Specifically, screw holes compatible with the bolts or screw holes compatible with the screws 14 are provided at the corresponding connections so as to be connected and reinforced by bolts or screws 14.

[0027] The impeller 7 includes a wheel body 701, a circular ring 702 is provided at the lower end of the wheel body 701, and the lower end of the circular ring 702 is arranged in a through hole in the middle of the lower pump seat 11, and a plurality of spiral drainage ports 703 are provided along the circumference of the wheel body 701, and the lower end of the drainage port 703 is connected to the through hole, the guide vane 8 includes a cover body 801 arranged in an inverted bowl shape and a plurality of guide plates 802 distributed in a ring array around the cover body 801, and the angle formed between the upper end surface of the guide plate 802 and the cover body 801 is an obtuse angle, a drainage port is formed between two adjacent guide plates 802 and the cover body 801, and the drainage port is connected to the drainage port 703, and the water outlet sleeve 12 is connected to the drainage port through a drainage channel arranged in the middle of the upper pump seat 10.

[0028] When the oil-filled permanent magnet motor is working, it drives the rotating shaft 4 to rotate. During the rotation, the rotating shaft 4 drives the impeller 7 to rotate. During the rotation, the impeller 7 allows water to be drained through the through hole of the lower pump seat 11 to the ring 702 through multiple spiral drainage ports 703. After passing through the inner side of the ring 702, the water passes through the spiral drainage port 703 through the rotating impeller 7. At this time, the water is diverted and the flow rate of the water is controlled through the diversion port. A constricted outlet is provided at the upper end of the inner tank 6, and the water flow is pressurized through the constricted outlet.

[0029] Embodiment 3: On the basis of Example 2, it was found that when water flows into the through hole of the lower pump seat 11, impurities may clog the through hole. In order to solve this problem, the following technical solution is proposed. Specifically, a water inlet is formed between the lower end of the annular plate 16, the upper end of the sealing cover 2 and the two adjacent support beams 17. A filter frame 19 whose size is adapted to the water inlet is provided at the water inlet. A filter screen 20 is provided on the inner side of the filter frame 19. Fixed columns 21 are provided on both sides of the filter frame 19. Grooves 22 are provided at the upper and lower ends of the fixed column 21. A compression spring 23 is provided at the bottom of the groove 22. One end of the compression spring 23 away from the bottom of the groove 22 is fixedly connected to a clamping column 24, and opening slits 25 are provided on the upper and lower sides of the fixed column 21, and the opening slits 25 are communicated with the adjacent groove 22. A paddle plate 26 is provided at the place where the compression spring 23 and the clamping column 24 are connected, and the paddle plate 26 slides and extends to the outside of the opening slit 25 at one end away from the clamping column 24. A plurality of first clamping holes and second clamping holes are respectively provided on the annular plate 16 and the sealing cover 2, and the clamping columns 24 arranged at the upper and lower ends of the fixed column 21 are respectively clamped in the first clamping holes and the second clamping holes.

[0030] When installing the filter frame 19, first press the dial plate 26 so that the dial plate 26 drives the clamping column 24 to move toward one end of the extrusion compression spring 23 until the clamping column 24 is completely slid and set in the groove 22. At this time, the fixing column 21 is placed between the annular plate 16 and the sealing cover 2, and then the dial plate 26 is released. During the recovery process of the compression spring 23, the clamping column 24 is driven to move toward the notch of the groove 22, and the clamping column 24 is pushed to be clamped in the first clamping hole of the annular plate 16 or the second clamping hole on the sealing cover 2. Specifically, the clamping columns 24 arranged at the upper and lower ends of the fixing column 21 are respectively clamped in the first clamping hole and the second clamping hole. By providing a filter screen 20 in the filter frame 19, it is convenient to filter the water flow passing through the lower base to prevent larger impurities from passing through and clogging the lower base. At the same time, by clamping the clamping columns 24 at the upper and lower ends of the fixing column 21 in the first clamping hole and the second clamping hole, it is convenient to install and disassemble, repair and replace the filter screen 20.

[0031] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A lightweight oil-immersed deep well pump, characterized by: The invention comprises an oil seal outer cylinder (1) having an oil-filled permanent magnet motor therein, a sealing cover (2) being provided at the top of the oil seal outer cylinder (1), a sealing bearing (3) being provided at the middle of the sealing cover (2), an inner ring of the sealing bearing (3) being connected to a rotating shaft (4) of the oil-filled permanent magnet motor, a supporting frame being provided on the sealing cover (2), a housing (5) being provided on the supporting frame, an inner liner (6) being provided in the housing (5), an impeller (7) connected to the rotating shaft (4) and a guide vane (8) being provided above the impeller (7), A rubber sleeve (9) is provided at the top of the rotating shaft (4), and the guide vane (8) is sleeved on the rubber sleeve (9). An upper pump seat (10) and a lower pump seat (11) are provided at the upper and lower ends of the inner liner (6), respectively. The upper and lower ends of the inner liner (6) are connected to the lower end of the upper pump seat (10) and the upper end of the lower pump seat (11), respectively. The lower end of the lower pump seat (11) is connected to the support frame. The upper end of the upper pump seat (10) is connected to a water outlet sleeve (12). The impeller (7), the guide vane (8) and the inner liner (6) are all made of hard plastic.

2. A lightweight oil-immersed deep well pump according to claim 1, characterized in that: The lower end of the sealing cover (2) is provided with a protruding outer edge (13), the outer edge (13) is clamped on the inner side of the top of the oil seal outer tube (1), and a plurality of screws (14) are arranged equidistantly along the circumference of the oil seal outer tube (1), the screws (14) are threadedly passed through the oil seal outer tube (1) and are threadedly connected to the outer edge (13), and the outer edge (13) is provided with two first annular grooves spaced apart from each other in an upper and lower direction, and a first sealing ring (15) is arranged in each of the two first annular grooves.

3. A lightweight oil-immersed deep well pump according to claim 1, characterized in that: The support frame comprises an annular plate (16) and four support beams (17) vertically and equidistantly arranged at the lower end of the annular plate (16); the lower end of the support beam (17) is connected to the sealing cover (2); the sealing cover (2), the support beam (17) and the annular plate (16) are arranged as a whole.

4. A lightweight oil-immersed deep well pump according to claim 3, characterized in that: The lower end of the outer shell (5) is sleeved on the lower pump seat (11), the annular plate (16) and the lower pump seat (11) are fixedly connected by bolts, and the outer shell (5) and the lower pump seat (11) are fixedly connected by screws (14); The upper pump seat (10) is fixedly connected to the inner tank (6) by means of bolts, and the outer walls of the upper pump seat (10) and the lower pump seat (11) are both provided with a second annular groove, and a second sealing ring (18) is provided in the second annular groove.

5. A lightweight oil-immersed deep well pump according to claim 4, characterized in that: The impeller (7) comprises a wheel body (701), a circular ring (702) is provided at the lower end of the wheel body (701), the lower end of the circular ring (702) is arranged in a through hole in the middle of the lower pump seat (11), a plurality of spiral drainage ports (703) are provided along the circumference of the wheel body (701), and the lower ends of the drainage ports (703) are connected to the through hole, and the guide vane (8) comprises a cover body (801) arranged in an inverted bowl shape and a plurality of Guide plates (802) are distributed in a circular array around the cover body (801), and the angle formed between the upper end surface of the guide plate (802) and the cover body (801) is an obtuse angle. A flow guide port is formed between two adjacent guide plates (802) and the cover body (801), and the flow guide port is connected to the flow guide port (703). The water outlet sleeve port (12) is connected to the flow guide port via a flow guide channel provided in the middle of the upper pump seat (10).

6. A lightweight oil-immersed deep well pump according to claim 4, characterized in that: A water inlet is formed between the lower end of the annular plate (16), the upper end of the sealing cover (2) and two adjacent support beams (17); a filter frame (19) having a size matching that of the water inlet is provided at the water inlet; a filter screen (20) is provided inside the filter frame (19); fixing columns (21) are provided on both sides of the filter frame (19); grooves (22) are provided at both upper and lower ends of the fixing column (21); a compression spring (23) is provided at the bottom of the groove (22); and a clamping column (24) is fixedly connected to one end of the compression spring (23) away from the bottom of the groove (22). ), the fixing column (21) is provided with an opening slit (25) on both upper and lower sides, and the opening slit (25) is communicated with an adjacent groove (22), a shift plate (26) is provided at a location where the compression spring (23) and the clamping column (24) are connected, and an end of the shift plate (26) away from the clamping column (24) slides and extends to the outside of the opening slit (25), the annular plate (16) and the sealing cover (2) are respectively provided with a plurality of first clamping holes and second clamping holes, and the clamping columns (24) arranged at the upper and lower ends of the fixing column (21) are respectively clamped in the first clamping holes and the second clamping holes.

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