Efficient and energy-saving submersible pipeline pump

Abstract

The utility model relates to the technical field of pipeline pumps, in particular to an efficient and energy-saving submersible pipeline pump which comprises a submersible motor and a pump body with a water outlet and a water inlet, the output end of the submersible motor is connected with an oil cylinder in a sealed mode, and an oil cylinder cover is arranged at the end, away from the submersible motor, of the oil cylinder and connected with the corresponding end of the pump body. An output shaft of the submersible motor penetrates through the oil cylinder cover and is in transmission connection with an impeller arranged in the pump body, a first shaft sealing assembly is arranged between the oil cylinder cover and the output end of the submersible motor, and a second shaft sealing assembly is arranged between the oil cylinder cover and the impeller. The submersible motor and the bottom of the pump body are connected with the same bottom plate, the four corners of the bottom plate are connected with the vertically-arranged supports, the tops of the supports are connected with the same floating box, and by arranging the floating box and the supports, the pipeline pump can be conveniently arranged to float in water to use a waterproof motor, and then the pipeline pump can be directly used under the water or suspended in the water.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline pumps, in particular to a high-efficiency and energy-saving submersible pipeline pump. Background Art

[0002] Horizontal pipeline pumps are used in the transportation of industrial liquids and urban water supply and drainage, high-rise building pressurized water supply, garden sprinkler irrigation, fire boosting, heating and other cold and hot water circulation boosting and equipment matching, as well as air conditioning unit circulation, cooling water transportation, etc.

[0003] The motor of the horizontal pipeline pump in the prior art is a standard motor with a protection grade of IP55, so it cannot be used submersible. At the same time, the temperature of the horizontal pipeline pump is greatly affected by the ambient temperature during use, and the horizontal pipeline pump has requirements for installation conditions. A pump room needs to be built for installing the horizontal pipeline pump, which makes the installation more troublesome. At the same time, the horizontal pipeline pump needs to exhaust the air in the water inlet pipe before starting, and there is only one sealing structure between the pump body and the motor. At the same time, the submersible pump in the prior art is mostly used by directly diving underwater when in use, which is not convenient for the submersible pump to be set to float in water for use, resulting in poor applicability of the horizontal pipeline pump in some specific occasions. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency and energy-saving submersible pipeline pump, which solves the problem in the prior art that horizontal pipeline pumps cannot be submerged in water for use, and at the same time solves the requirements of pipeline pumps on installation conditions. The pipeline pump can be submerged in water, and the pipeline pump can also be set to float in water for use. The heat dissipation of the cooling fan is eliminated, the influence of the ambient temperature on the pump is shielded, which is more conducive to the heat dissipation of the pump, improves the efficiency of the pump unit, makes the pipeline pump more energy-efficient, more convenient to use, and does not require air exhaust.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A high-efficiency and energy-saving submersible pipeline pump comprises a submersible motor and a pump body with a water outlet and a water inlet. The output end of the submersible motor is sealedly connected to an oil cylinder. An oil cylinder cover is provided at the end of the oil cylinder away from the submersible motor, and the oil cylinder cover is connected to the corresponding end of the pump body. The output shaft of the submersible motor passes through the oil cylinder cover and is drivingly connected to an impeller arranged in the pump body. A first shaft sealing assembly is provided between the oil cylinder cover and the output end of the submersible motor, and a second shaft sealing assembly is provided between the oil cylinder cover and the impeller. The submersible motor and the bottom of the pump body are connected to the same bottom plate, the four corners of the bottom plate are connected to vertically arranged brackets, and the top of the bracket is connected to the same buoyancy box.

[0007] A further technical solution is that the water outlet is connected to a water outlet head with an adjustable angle, and a plurality of connecting threaded holes are arranged in a circular row on the flange of the water outlet, and a plurality of through threaded holes corresponding to the connecting threaded holes are arranged in a circular row on the flange at one end of the water outlet head connected to the water outlet. When the corresponding end of the water outlet head is connected to the water outlet, the connecting threaded holes are respectively aligned with the through threaded holes and are connected by adjusting bolts.

[0008] A further technical solution is that the first shaft sealing assembly includes two double-sided mechanical seals and a first support spring. The two double-sided mechanical seals are both mounted on the output shaft, and the opposite sides of the two double-sided mechanical seals respectively conflict with the side wall of the output end of the submersible motor and the side wall of the cylinder cover. The first support spring is mounted on the outer side of the output shaft and located between the two double-sided mechanical seals. The first support spring is in a compressed state, and its two ends are respectively connected to the two double-sided mechanical seals.

[0009] A further technical solution is that the second shaft sealing assembly includes two single-sided mechanical seals and a second support spring. The two single-sided mechanical seals are both sleeved on the output shaft, and the opposite sides of the two single-sided mechanical seals respectively conflict with the side wall of the cylinder cover and the side wall of the impeller. The second support spring is sleeved on the outer side of the output shaft and located between the two single-sided mechanical seals. The second support spring is in a compressed state, and its two ends are respectively connected to the two single-sided mechanical seals.

[0010] A further technical solution is that the submersible motor includes a rotor, a stator, a rotor shaft and a waterproof shell, and a plurality of heat exchange strips are evenly protruded on the outer wall of the waterproof shell.

[0011] A further technical solution is that the bracket includes a connecting tube and a connecting rod, the lower end of the connecting tube is connected to the base plate, the lower end of the connecting rod is inserted into the connecting tube, the upper end of the connecting rod is connected to the bottom of the buoyancy box, and an adjustment threaded hole connected to the interior of the connecting tube is opened on the outer wall of the connecting tube, and a locking bolt is threadedly connected to the inner thread of the adjusting threaded hole; a plurality of limit holes are provided on the surface of the connecting rod along its length direction.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. A submersible motor is provided so that the pipeline pump can be directly submerged in water or suspended in water for use. At the same time, the first shaft sealing assembly and the second shaft sealing assembly are provided to play a sealing role, and the output shaft of the submersible motor is double-sealed, so that the sealing performance is more stable and its sealing effect is improved. Since the pipeline pump is used submerged in water, there is no need to build a pump room for installing the pipeline pump, which improves portability. At the same time, the pipeline pump is used submerged in water, and the cooling fan of the horizontal pipeline pump is removed. The performance of heat conduction is adopted, and the waterproof casing conducts the heat generated by its internal components to its outside by heat conduction. The water flow outside the waterproof casing absorbs the heat on the outside of the waterproof casing, so that the heat generated by the submersible motor when the pipeline pump is running can be absorbed in time to cool the pipeline pump, which is more conducive to heat dissipation.

[0014] 2. By setting a buoyancy box and a bracket, the pipeline pump can be floated in water for use. A submersible motor can be set so that the pipeline pump can be directly submerged in the water or suspended in the water for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a high-efficiency and energy-saving submersible pipeline pump of the utility model.

[0016] Figure 2 This is an exploded view of the pump body, oil cylinder, oil cylinder cover and adjusting connecting parts of the utility model.

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of a high-efficiency and energy-saving submersible pipeline pump of the present utility model.

[0018] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle.

[0019] Figure 5 This is a schematic diagram of the structure of the connecting rod, connecting pipe and locking bolt of the utility model.

[0020] Icons: 1-submersible motor, 2-pump body, 3-water inlet, 4-water outlet, 5-oil cylinder, 6-oil cylinder cover, 7-output shaft, 8-impeller, 9-connecting threaded hole, 10-through threaded hole, 11-adjusting bolt, 13-double-sided mechanical seal, 14-first support spring, 15-single-sided mechanical seal, 16-second support spring, 17-rotor, 18-stator, 19-rotor shaft, 20-waterproof casing, 21-heat exchange strip, 22-bottom plate, 23-floatation box, 24-water outlet head, 25-bracket, 26-connecting rod, 27-connecting pipe, 28-adjusting threaded hole, 29-locking bolt, 30-limit hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to 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.

[0022] Example 1:

[0023] See Figures 1 to 3 The utility model shows a high-efficiency and energy-saving submersible pipeline pump, comprising a submersible motor 1 and a pump body 2 with a water outlet 4 and a water inlet 3. The output end of the submersible motor 1 is sealed and connected to an oil cylinder 5. The end of the oil cylinder 5 away from the submersible motor 1 is provided with an oil cylinder cover 6, and the oil cylinder cover 6 is connected to the corresponding end of the pump body 2; the output shaft 7 of the submersible motor 1 passes through the oil cylinder cover 6 and is transmission-connected to an impeller 8 provided in the pump body 2. A first shaft sealing assembly is provided between the oil cylinder cover 6 and the output end of the submersible motor 1, and a second shaft sealing assembly is provided between the oil cylinder cover 6 and the impeller 8; the bottom of the submersible motor 1 and the pump body 2 are connected to the same bottom plate 22, and the four sides of the bottom plate 22 are connected to the bottom of the submersible motor 1. The corners are connected to the vertical bracket 25, and the bracket 25 and the bottom plate 22 can be connected with the bolts in the existing technology, which is convenient for disassembly. The top of the bracket 25 is connected with the same buoyancy box 23. The buoyancy of the buoyancy box 23 is greater than the gravity of the pipeline pump in the water, thereby ensuring that the pipeline pump floats in the water through the buoyancy box 23 and the bracket 25. In actual use, by setting the submersible motor 1, the first shaft sealing assembly and the second shaft sealing assembly, the first shaft sealing assembly and the second shaft sealing assembly both play a sealing role, and the output shaft 7 of the submersible motor 1 is double-sealed, making the sealing performance more stable, improving its sealing effect, and avoiding the existing When a horizontal pipeline pump with only one sealing assembly in the prior art is in use, when the sealing assembly is worn and the sealing effect is affected, the horizontal pipeline pump in the prior art will leak, affecting its normal use. By providing a first shaft sealing assembly between the cylinder cover 6 and the waterproof housing 20, a lubricating oil cavity is formed between the cylinder cover 6, the oil cylinder 5 and the waterproof housing 20, providing favorable lubricating oil conditions for the first shaft sealing assembly. Since the liquid entering the pump body 2 has a certain pressure under the drive of the impeller 8, by providing a second shaft sealing assembly, it is possible to prevent the pressurized liquid from passing directly through the gap between the output shaft 7 and the cylinder cover 6. It is in contact with the first shaft sealing assembly to avoid erosion and damage to the first shaft sealing assembly, and to avoid leakage of the lubricating oil in the lubricating oil cavity formed between the cylinder cover 6, the cylinder 5 and the waterproof housing 20 due to the damage of the first shaft sealing assembly, thereby further improving its sealing effect and ensuring that the pipeline pump can be submerged in water for use, thereby achieving the need to no longer build a pump room for installing the pipeline pump. By setting up a float 23, the pipeline pump can be conveniently set to float in water for use. At the same time, by setting up the float 23, when in use, the float 23 floats on the water surface, which is convenient for the staff to directly locate the position of the pipeline pump according to the position of the float 23.

[0024] Example 2:

[0025] On the basis of Example 1, in this embodiment, refer to Figures 1 to 3 As shown, the water outlet 4 is connected to a water outlet head 24 with an adjustable angle, and a plurality of connecting threaded holes 9 are arranged in a circular row on the flange of the water outlet 4. A plurality of through threaded holes 10 corresponding to the connecting threaded holes 9 are arranged in a circular row on the flange at one end of the water outlet head 24 connected to the water outlet 4. When the corresponding end of the water outlet head 24 is connected to the water outlet 4, the connecting threaded holes 9 are respectively aligned with the through threaded holes 10 and are connected by adjusting bolts 11.

[0026] When it is necessary to adjust the angle of the water outlet head 24, the adjusting bolts 11 are rotated respectively so that the ends of the adjusting bolts 11 are removed from the connecting threaded holes 9, and then the water outlet head 24 is rotated with the center of the connection end corresponding to the water outlet 4 as the axis. When the angle of the water outlet head 24 is rotated to a suitable position away from one end of the water outlet 4, it is used to connect the pipe 27. At this time, the connecting threaded holes 9 arranged in a circular array are aligned with the through threaded holes 10 arranged in a corresponding circular array, and then the adjusting bolts 11 are tightened to achieve the connection between the water outlet 4 and the corresponding ends of the water outlet head 24. By setting the corresponding connecting threaded holes 9 and the through threaded holes 10 arranged in a circular array, the spacing between the two adjacent connecting threaded holes 9 is equal to the spacing between the two adjacent through threaded holes 10, thereby ensuring that after the water outlet head 24 is rotated with the center of the connection end corresponding to the water outlet 4 as the axis, the number and position of the connecting threaded holes 9 and the through threaded holes 10 are still corresponding and aligned, which is convenient for subsequent connection by the adjusting bolts 11. Through this structure, the direction angle of the water outlet head 24 is easily adjusted, thereby improving its practicality.

[0027] Example 3:

[0028] Based on the above embodiments, in this embodiment, refer to Figure 3 、 Figure 4As shown, the first shaft sealing assembly includes two double-sided mechanical seals 13 and a first supporting spring 14. The two double-sided mechanical seals 13 are both sleeved on the output shaft 7, and the opposite sides of the two double-sided mechanical seals 13 respectively conflict with the side wall of the output end of the submersible motor 1 and the side wall of the cylinder cover 6. The first supporting spring 14 is sleeved on the outer side of the output shaft 7 and is located between the two double-sided mechanical seals 13. The first supporting spring 14 is in a compressed state, and its two ends are respectively connected to the two double-sided mechanical seals 13. Since the first supporting spring 14 is in a compressed state, the first supporting spring 14 has elastic force, which plays a supporting and limiting role on the two double-sided mechanical seals 13, preventing the two double-sided mechanical seals 13 from displacing and approaching each other along the length direction of the output shaft 7, and the opposite sides thereof do not conflict with the side wall of the waterproof housing 20 and the side wall of the cylinder cover 6, avoiding the opposite sides of the two double-sided mechanical seals 13 from having gaps with the side wall of the output end of the submersible motor 1 and the side wall of the cylinder cover 6, thereby affecting the sealing effect.

[0029] See Figure 3 、 Figure 4 It is shown that the second shaft sealing assembly includes two single-sided mechanical seals 15 and a second supporting spring 16. The two single-sided mechanical seals 15 are both sleeved on the output shaft 7, and the opposite sides of the two single-sided mechanical seals 15 respectively conflict with the side wall of the cylinder cover 6 and the side wall of the impeller 8. The second supporting spring 16 is sleeved on the outer side of the output shaft 7 and is located between the two single-sided mechanical seals 15. The second supporting spring 16 is in a compressed state, and its two ends are respectively connected to the two single-sided mechanical seals 15. When in use, since the second supporting spring 16 is in a compressed state, the second supporting spring 16 has elastic force, which plays a supporting and limiting role on the two single-sided mechanical seals 15, preventing the two single-sided mechanical seals 15 from displacing and approaching each other along the length direction of the output shaft 7, ensuring that one of the single-sided mechanical seals 15 close to the cylinder cover 6 conflicts with the side wall of the cylinder cover 6, avoiding the formation of gaps between the single-sided mechanical seal 15 and the side wall of the cylinder cover 6, affecting the sealing effect.

[0030] Example 4:

[0031] Based on the above embodiments, in this embodiment, refer to Figure 3 、 Figure 4As shown, the submersible motor 1 includes a rotor 17, a stator 18, a rotor shaft 19 and a waterproof housing 20. The adaptation relationship between the rotor 17, the stator 18, the rotor shaft 19 and the waterproof housing 20 is the existing technology and will not be repeated here. One end of the rotor shaft 19 is transmission-connected to the output shaft 7. A plurality of heat exchange strips 21 are evenly protruded on the outer wall of the waterproof housing 20. When in use, the difference between the submersible motor 1 and the horizontal pipeline pump is that the cooling fan of the horizontal pipeline pump is removed. Since the pipeline pump is placed in water for use, the waterproof housing 20 adopts the performance of heat conduction to conduct the heat generated by its internal components to its outside by heat conduction. The liquid outside the waterproof housing 20 absorbs the heat on the outside of the waterproof housing 20, so that the heat generated by the submersible motor 1 when the pipeline pump is running is timely absorbed and cooled, so that the cooling method is not affected by the external ambient temperature, but only by the water temperature, which is more conducive to heat dissipation. , so that the temperature of the components inside the waterproof shell 20 is maintained within a reasonable range, and the overall service life is improved. The multiple heat exchange strips 21 are beneficial to increasing the contact area between the outer wall of the waterproof shell 20 and the external liquid, which is beneficial to increasing the cooling efficiency of the liquid on the waterproof shell 20, and realizing efficient heat dissipation of the pipeline pump. At the same time, the cooling fan of the horizontal pipeline pump is removed. When the pipeline pump is in use, there will be no cooling fan to consume mechanical energy, which improves the efficiency of the unit, reduces energy consumption during use, and is more energy-efficient when in use. At the same time, since the pipeline pump is used submerged in water, it can avoid the need to remove air in the water inlet pipe like a general pipeline pump when in use, reducing pipe loss and improving work efficiency. The device replaces submersible sewage pumps, multi-stage submersible pumps, etc., and solves the problem that the working water level of submersible sewage pumps and multi-stage submersible pumps needs to be 2 meters, but the working water level of the device is only 0.5 meters, which improves practicality.

[0032] Example 5:

[0033] See Figure 5As shown, the bracket 25 includes a connecting tube 27 and a connecting rod 26. The lengths of the connecting rod 26 and the connecting tube 27 can be selected according to actual usage. The lower end of the connecting tube 27 is connected to the bottom plate 22, and the lower end of the connecting rod 26 is inserted into the connecting tube 27. The upper end of the connecting rod 26 is connected to the bottom of the buoyancy tank 23. An adjusting threaded hole 28 connected to the interior of the connecting tube 27 is provided on the outer wall of the connecting tube 27, and a locking bolt 29 is connected to the inner thread of the adjusting threaded hole 28; a plurality of limiting holes 30 are provided on the surface of the connecting rod 26 along its length direction. In actual use, the connecting tube 27 and the connecting rod 26 are set. By controlling the length of the lower end of the connecting rod 26 inserted into the interior of the connecting tube 27, it is convenient to control the length of the bracket 25, and then it is convenient to control the depth of the pipeline pump when floating in the water. By setting an adjusting threaded hole 28, a locking bolt 29 and a plurality of limiting holes 30, when the lower end of the connecting rod 26 is inserted into the appropriate position inside the connecting pipe 27, the locking bolt 29 is threadedly engaged with the adjusting threaded hole 28, and the end of the adjusting bolt 11 is placed in a limiting hole 30 that is aligned with the adjusting threaded hole 28 at this time, thereby fixing the positions of the connecting rod 26 and the connecting pipe 27 relative to each other, thereby ensuring that the length of the bracket 25 remains unchanged during use, so that the pipeline pump floats at an appropriate depth in the water. According to actual conditions, the connecting rod 26 and the connecting pipe 27 of appropriate length are selected to ensure that when the length of the bracket 25 is adjusted to the longest length, the pipeline pump can be submerged in water for use. At the same time, the buoyancy box 23 floating on the water surface is used to quickly locate the position of the pipeline pump, thereby improving practicality.

[0034] Although the present invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and implementations may be devised by those skilled in the art that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, the drawings, and the claims, various variations and modifications may be made to the components and / or layout of the subject combination arrangement. In addition to variations and modifications to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A high-efficiency and energy-saving submersible pipeline pump, comprising a submersible motor (1) and a pump body (2) with a water outlet (4) and a water inlet (3), characterized in that: The output end of the submersible motor (1) is sealedly connected to an oil cylinder (5), and an oil cylinder cover (6) is provided at one end of the oil cylinder (5) away from the submersible motor (1), and the oil cylinder cover (6) is connected to the corresponding end of the pump body (2); the output shaft (7) of the submersible motor (1) passes through the oil cylinder cover (6) and is transmission-connected to an impeller (8) provided in the pump body (2), a first shaft sealing assembly is provided between the oil cylinder cover (6) and the output end of the submersible motor (1), and a second shaft sealing assembly is provided between the oil cylinder cover (6) and the impeller (8); the bottom of the submersible motor (1) and the pump body (2) are connected to the same bottom plate (22), the four corners of the bottom plate (22) are connected to vertically arranged brackets (25), and the top of the bracket (25) is connected to the same buoyancy box (23).

2. The high-efficiency and energy-saving submersible pipeline pump according to claim 1, characterized in that: The water outlet (4) is connected to a water outlet head (24) with an adjustable angle. A plurality of connecting threaded holes (9) are arranged in a circular array on the flange of the water outlet (4). A plurality of through threaded holes (10) corresponding to the connecting threaded holes (9) are arranged in a circular array on the flange at one end of the water outlet head (24) connected to the water outlet (4). When the corresponding end of the water outlet head (24) is connected to the water outlet (4), the connecting threaded holes (9) are respectively aligned with the through threaded holes (10) and are connected by adjusting bolts (11).

3. The high-efficiency and energy-saving submersible pipeline pump according to claim 1, characterized in that: The first shaft sealing assembly includes two double-sided mechanical seals (13) and a first supporting spring (14). The two double-sided mechanical seals (13) are both sleeved on the output shaft (7), and the two opposite sides of the two double-sided mechanical seals (13) are respectively in conflict with the side wall of the output end of the submersible motor (1) and the side wall of the cylinder cover (6). The first supporting spring (14) is sleeved on the outer side of the output shaft (7) and is located between the two double-sided mechanical seals (13). The first supporting spring (14) is in a compressed state, and its two ends are respectively connected to the two double-sided mechanical seals (13).

4. The high-efficiency and energy-saving submersible pipeline pump according to claim 1, characterized in that: The second shaft seal assembly includes two single-sided mechanical seals (15) and a second support spring (16). The two single-sided mechanical seals (15) are both sleeved on the output shaft (7), and the two opposite sides of the two single-sided mechanical seals (15) are respectively in conflict with the side wall of the cylinder cover (6) and the side wall of the impeller (8). The second support spring (16) is sleeved on the outer side of the output shaft (7) and is located between the two single-sided mechanical seals (15). The second support spring (16) is in a compressed state, and its two ends are respectively connected to the two single-sided mechanical seals (15).

5. The high-efficiency and energy-saving submersible pipeline pump according to claim 1, characterized in that: The submersible motor (1) comprises a rotor (17), a stator (18), a rotor shaft (19), and a waterproof housing (20). A plurality of heat exchange strips (21) are uniformly protruded on the outer wall of the waterproof housing (20).

6. The high-efficiency and energy-saving submersible pipeline pump according to claim 1, characterized in that: The bracket (25) includes a connecting tube (27) and a connecting rod (26), the lower end of the connecting tube (27) is connected to the bottom plate (22), the lower end of the connecting rod (26) is inserted into the connecting tube (27), and the upper end of the connecting rod (26) is connected to the bottom of the buoyancy box (23). An adjusting threaded hole (28) communicating with the interior of the connecting tube (27) is provided on the outer wall of the connecting tube (27), and a locking bolt (29) is connected to the inner thread of the adjusting threaded hole (28); and a plurality of limiting holes (30) are provided on the surface of the connecting rod (26) along its length direction.

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