Variable-lift single-stage single-suction centrifugal pump

Abstract

The utility model is applicable to the technical field of single-stage and single-suction centrifugal pumps, and provides a variable-lift single-stage and single-suction centrifugal pump which comprises a single-stage and single-suction centrifugal pump body, the single-stage and single-suction centrifugal pump body comprises a base, a water inlet and a water outlet, the base is arranged at the bottom of the single-stage and single-suction centrifugal pump body, and the water inlet is communicated with the water outlet. The water inlet and the water outlet are formed in the single-stage single-suction centrifugal pump body; the driving motor is fixedly mounted on the outer wall of one side of the water outlet; the mounting shaft is rotationally mounted on the water outlet, and one end of the mounting shaft is fixedly connected with an output shaft of the driving motor; the adjusting plate is fixedly arranged on the mounting shaft in a sleeving manner; and the adjusting plate is matched with the inner wall of the water outlet. According to the single-stage single-suction centrifugal pump with the variable lift, the lift in the using process can be conveniently adjusted, impurities in water can be effectively treated, the influence of the impurities on the pump body is reduced, and the failure rate is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of single-stage single-suction centrifugal pumps, in particular to a single-stage single-suction centrifugal pump with variable head. Background Art

[0002] The single-stage single-suction centrifugal pump adopts the most advanced hydraulic model, is designed according to the performance parameters of the is type centrifugal pump and the unique structural combination of the vertical pump, and is designed and manufactured in strict accordance with the international iso2858. The shaft seal of this product uses a hard alloy mechanical seal device, which has the characteristics of high efficiency and energy saving, reliable performance, and easy installation and use.

[0003] However, some single-stage single-suction centrifugal pumps still have certain shortcomings in actual use. Some single-stage single-suction centrifugal pumps are not convenient to adjust the use head, and some single-stage single-suction centrifugal pumps cannot clean up the impurities in the water used very well, which leads to the problem of easy accumulation of impurities in the single-stage single-suction centrifugal pumps, increasing the failure rate. Utility Model Content

[0004] The utility model provides a single-stage single-suction centrifugal pump with variable head, aiming to solve the problem in the above background technology that the currently used single-stage single-suction centrifugal pump is inconvenient to adjust the head.

[0005] To solve the above problems, the utility model is implemented as follows: a single-stage single-suction centrifugal pump with variable head, comprising: a single-stage single-suction centrifugal pump body, the single-stage single-suction centrifugal pump body comprising a base, a water inlet and a water outlet, the base is arranged at the bottom of the single-stage single-suction centrifugal pump body, the water inlet and the water outlet are both arranged on the single-stage single-suction centrifugal pump body; a driving motor fixedly mounted on the outer wall of one side of the water outlet; a mounting shaft rotatably mounted on the water outlet, one end of the mounting shaft and the output shaft of the driving motor are fixedly connected; an adjusting plate fixedly sleeved on the mounting shaft, the adjusting plate and the inner wall of the water outlet are adapted, and the adjusting plate is used to adjust the water flow rate of the water outlet; a connecting pipe arranged on the water inlet, a filter screen is arranged in the connecting pipe, and the filter screen is used to filter some impurities in the water; a processing mechanism mounted on the connecting pipe, and the processing mechanism is used to process some large impurities in the connecting pipe; a soundproof cover mounted on the base, and the soundproof cover is used to block noise.

[0006] Preferably, the processing mechanism includes: a servo motor fixedly installed on the outer wall of one side of the water inlet; a placement shaft rotatably installed on the water inlet, one end of the placement shaft is fixedly connected to the output shaft of the servo motor; a horizontal shaft rotatably installed in the connecting pipe, a plurality of crushing knives are fixedly installed on the horizontal shaft, and the crushing knives are used to crush large impurities in the water; two bevel gears fixedly mounted on the horizontal shaft and the placement shaft, respectively, and the two bevel gears are meshed with each other.

[0007] Preferably, a rotating shaft is fixedly mounted on the transverse axis, a cleaning frame is fixedly mounted on the rotating shaft, the cleaning frame is in contact with one side of the filter screen, and the cleaning frame is used to clean impurities adhered to the filter screen.

[0008] Preferably, the sound insulation cover comprises a sound insulation board and suction cotton, and the sound insulation board and suction cotton are both arranged on the sound insulation cover.

[0009] Preferably, a heat dissipation mechanism is provided on the sound insulation cover, and the heat dissipation mechanism is used to dissipate heat from the single-stage single-suction centrifugal pump body, and the heat dissipation mechanism includes: two vertical shafts rotatably mounted on the sound insulation cover; a plurality of fan blades respectively fixedly mounted on the two vertical shafts; a power motor fixedly mounted on the top of the sound insulation cover, and a double-grooved wheel is fixedly sleeved on the output shaft of the power motor; two single-grooved wheels respectively fixedly sleeved on the two vertical shafts; and two belts sleeved on the double-grooved wheel and the two single-grooved wheels.

[0010] Preferably, the output shaft of the power motor is rotatably connected to the sound insulation cover, and the sound insulation cover is fixedly mounted on the base by bolts.

[0011] Preferably, the soundproof cover and the single-stage single-suction centrifugal pump body are both provided with a controller, and the controller is used to perform control operations.

[0012] Compared with the related art, the single-stage single-suction centrifugal pump with variable head provided by the utility model has the following beneficial effects:

[0013] Compared with the prior art, the variable head single-stage single-suction centrifugal pump provided by this solution has the following advantages:

[0014] Water can be transported through the single-stage single-suction centrifugal pump body, and the adjustment plate on the mounting shaft is driven by the driving motor to adjust the water flow rate at the outlet, thereby adjusting the resistance of the water outlet, and then adjusting the head of the single-stage single-suction centrifugal pump body. The processing mechanism can crush large impurities in the water, thereby avoiding the blockage of the single-stage single-suction centrifugal pump body by large impurities, and reducing the entry of large impurities into the single-stage single-suction centrifugal pump body. The soundproof cover can effectively deal with the noise generated during the use of the single-stage single-suction centrifugal pump body, thereby reducing noise pollution during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a single-stage single-suction centrifugal pump with variable head provided by the utility model;

[0016] Figure 2 It is a schematic diagram of the main structure of the single-stage single-suction centrifugal pump body in the utility model;

[0017] Figure 3 It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 4 for Figure 3 An enlarged structural diagram of part A shown in FIG.

[0019] Figure 5 for Figure 3 An enlarged schematic diagram of the structure of part B shown in FIG.

[0020] Figure 6 for Figure 3 Schematic diagram of the enlarged structure of part C shown in FIG.

[0021] Figure numerals: 1. Single-stage single-suction centrifugal pump body; 101. Base; 102. Water inlet; 103. Water outlet; 2. Driving motor; 3. Mounting shaft; 4. Adjustment plate; 5. Connecting pipe; 501. Filter screen; 6. Processing mechanism; 601. Servo motor; 602. Placement shaft; 603. Horizontal axis; 604. Crushing knife; 606. Rotating shaft; 607. Cleaning rack; 7. Soundproof cover; 701. Soundproof board; 702. Suction cotton; 8. Vertical axis; 9. Fan blades; 10. Power motor; 11. Double groove pulley; 12. Single groove pulley; 13. Belt. DETAILED DESCRIPTION

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] The utility model provides a single-stage single-suction centrifugal pump with variable head, such as Figure 1-6 As shown, a single-stage single-suction centrifugal pump with a variable head comprises: a single-stage single-suction centrifugal pump body 1, wherein the single-stage single-suction centrifugal pump body 1 comprises a base 101, a water inlet 102 and a water outlet 103, wherein the base 101 is arranged at the bottom of the single-stage single-suction centrifugal pump body 1, and the water inlet 102 and the water outlet 103 are both arranged on the single-stage single-suction centrifugal pump body 1; a driving motor 2 fixedly mounted on an outer wall of one side of the water outlet 103; a mounting shaft 3 rotatably mounted on the water outlet 103, wherein one end of the mounting shaft 3 is fixedly connected to the output shaft of the driving motor 2; and a fixed An adjusting plate 4 is sleeved on the mounting shaft 3, the adjusting plate 4 is matched with the inner wall of the water outlet 103, and the adjusting plate 4 is used to adjust the water flow rate of the water outlet 103; a connecting pipe 5 is arranged on the water inlet 102, a filter screen 501 is arranged in the connecting pipe 5, and the filter screen 501 is used to filter some impurities in the water; a processing mechanism 6 is installed on the connecting pipe 5, and the processing mechanism 6 is used to process some large impurities in the connecting pipe 5; a sound insulation cover 7 is installed on the base 101, and the sound insulation cover 7 is used to block noise.

[0025] In this embodiment, water source transportation can be carried out through the single-stage single-suction centrifugal pump body 1. When the head of the single-stage single-suction centrifugal pump body 1 needs to be changed, the controller starts the driving motor 2 to drive the adjusting plate 4 on the mounting shaft 3 to adjust the water flow rate of the water outlet 103, thereby adjusting the resistance of the water outlet 103. When the pipeline resistance increases, the energy loss of the water flow in the pipeline will also increase, which leads to a decrease in the energy (i.e., head) of the water flow in the water outlet 103. Specifically, the increase in pipeline resistance will cause the flow rate of the water flow in the pipeline to decrease, thereby affecting the conversion efficiency of the static pressure energy and kinetic energy of the water flow, and vice versa. The head is increased, so that the resistance of the water outlet 103 is adjusted, and then the head of the single-stage single-suction centrifugal pump body 1 is adjusted;

[0026] At the same time, some impurities in the water can be isolated by the filter 501, and when in use, according to the actual situation, the processing mechanism 6 can be started to crush the large impurities in the water, thereby avoiding the situation where large impurities cause blockage to the single-stage single-suction centrifugal pump body 1, and reducing the situation where large impurities enter the single-stage single-suction centrifugal pump body 1.

[0027] In a further preferred embodiment of the utility model, the processing mechanism 6 includes: a servo motor 601 fixedly mounted on the outer wall of one side of the water inlet 102; a placement shaft 602 rotatably mounted on the water inlet 102, one end of the placement shaft 602 being fixedly connected to the output shaft of the servo motor 601; a horizontal shaft 603 rotatably mounted in the connecting pipe 5, a plurality of crushing knives 604 being fixedly mounted on the horizontal shaft 603, and the crushing knives 604 are used to crush large impurities in the water; two bevel gears 605 fixedly mounted on the horizontal shaft 603 and the placement shaft 602, respectively, and the two bevel gears 605 are meshed with each other.

[0028] In this embodiment, when the processing mechanism 6 is used, the servo motor 601 is started by the controller to drive the placement shaft 602 to rotate, and under the action of the bevel gear 605, the crushing knife 604 on the horizontal shaft 603 is driven to rotate, so as to crush the large impurities in the water, thereby avoiding the blockage of the single-stage single-suction centrifugal pump body 1 by large impurities, and reducing the situation where large impurities enter the single-stage single-suction centrifugal pump body 1.

[0029] In a further preferred embodiment of the utility model, a rotating shaft 606 is fixedly mounted on the horizontal axis 603, and a cleaning frame 607 is fixedly mounted on the rotating shaft 606. The cleaning frame 607 is in contact with one side of the filter screen 501, and the cleaning frame 607 is used to clean impurities adhered to the filter screen 501.

[0030] In this embodiment, when the horizontal shaft 603 rotates, the cleaning frame 607 on the rotating shaft 606 is driven to rotate, thereby cleaning the filter screen 501 to prevent the filter screen 501 from being blocked.

[0031] In a further preferred embodiment of the present invention, the sound insulation cover 7 includes a sound insulation board 701 and a suction cotton 702 , and the sound insulation board 701 and the suction cotton 702 are both arranged on the sound insulation cover 7 .

[0032] In this embodiment, the noise generated during the use of the single-stage single-suction centrifugal pump body 1 can be effectively processed by the sound insulation board 701 and the suction cotton 702, thereby reducing noise pollution during the operation.

[0033] In a further preferred embodiment of the utility model, a heat dissipation mechanism is provided on the sound insulation cover 7, and the heat dissipation mechanism is used to dissipate heat for the single-stage single-suction centrifugal pump body 1, and the heat dissipation mechanism includes: two vertical shafts 8 rotatably mounted on the sound insulation cover 7; a plurality of fan blades 9 respectively fixedly mounted on the two vertical shafts 8; a power motor 10 fixedly mounted on the top of the sound insulation cover 7, and a double groove wheel 11 is fixedly sleeved on the output shaft of the power motor 10; two single groove wheels 12 respectively fixedly sleeved on the two vertical shafts 8; and two belts 13 sleeved on the double groove wheel 11 and the two single groove wheels 12.

[0034] In this embodiment, when the soundproof cover 7 is used, the power motor 10 is started by the controller, and the fan blades 9 on the vertical shaft 8 can be mobilized to rotate under the cooperation of the double-grooved wheel 11, the single-grooved wheel 12 and the belt 13, so that the heat can be dissipated during the operation of the single-stage single-suction centrifugal pump body 1, thereby improving the heat dissipation effect of the single-stage single-suction centrifugal pump body 1.

[0035] In a further preferred embodiment of the present invention, the output shaft of the power motor 10 is rotatably connected to the sound insulation cover 7, and the sound insulation cover 7 is fixedly mounted on the base 101 by bolts.

[0036] In this embodiment, the sound insulation cover 7 is fixed on the base 101 by bolts, so that the sound insulation cover 7 can be easily disassembled and used according to actual usage conditions.

[0037] In a further preferred embodiment of the present invention, the soundproof cover 7 and the single-stage single-suction centrifugal pump body 1 are both provided with a controller, and the controller is used for performing control operations.

[0038] In this embodiment, the control operation is conveniently performed through a controller.

[0039] To sum up, compared with the relevant technology, water can be transported through the single-stage single-suction centrifugal pump body 1, and the adjustment plate 4 on the mounting shaft 3 is driven by the driving motor 2 to adjust the water flow rate of the water outlet 103, thereby adjusting the resistance of the water outlet 103, and then adjusting the head of the single-stage single-suction centrifugal pump body 1. The processing mechanism 6 can crush large impurities in the water, thereby avoiding the blockage of the single-stage single-suction centrifugal pump body 1 by large impurities, and reducing the entry of large impurities into the single-stage single-suction centrifugal pump body 1, reducing the impact of impurities on the pump body, and reducing the failure rate. The sound insulation cover 7 can effectively process the noise generated during the use of the single-stage single-suction centrifugal pump body 1 and reduce noise pollution during operation.

[0040] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0041] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A single-stage single-suction centrifugal pump with variable head, characterized in that: include: A single-stage single-suction centrifugal pump body, the single-stage single-suction centrifugal pump body comprising a base, a water inlet and a water outlet, the base being arranged at the bottom of the single-stage single-suction centrifugal pump body, the water inlet and the water outlet being both arranged on the single-stage single-suction centrifugal pump body; A driving motor fixedly mounted on an outer wall of one side of the water outlet; A mounting shaft rotatably mounted on the water outlet, wherein one end of the mounting shaft is fixedly connected to an output shaft of the driving motor; An adjusting plate fixedly sleeved on the mounting shaft, the adjusting plate being matched with the inner wall of the water outlet, and the adjusting plate being used to adjust the water flow rate of the water outlet; A connecting pipe is arranged on the water inlet, wherein a filter screen is arranged inside the connecting pipe, and the filter screen is used to filter some impurities in the water; A processing mechanism mounted on the connecting pipe, the processing mechanism is used to process some large impurities in the connecting pipe; A soundproof cover is mounted on the base, and is used to block noise.

2. The variable head single-stage single-suction centrifugal pump according to claim 1, characterized in that: The processing mechanism comprises: A servo motor fixedly mounted on an outer wall of one side of the water inlet; Rotate a placement shaft mounted on the water inlet, wherein one end of the placement shaft is fixedly connected to an output shaft of the servo motor; A horizontal shaft is rotatably mounted in the connecting pipe, and a plurality of crushing knives are fixedly mounted on the horizontal shaft, and the crushing knives are used to crush large impurities in the water; Two bevel gears are fixedly sleeved on the transverse shaft and the placement shaft respectively, and the two bevel gears are meshed with each other.

3. The variable head single-stage single-suction centrifugal pump according to claim 2, characterized in that: A rotating shaft is fixedly mounted on the transverse axis, a cleaning frame is fixedly mounted on the rotating shaft, the cleaning frame is in contact with one side of the filter screen, and the cleaning frame is used to clean impurities adhered to the filter screen.

4. The variable head single-stage single-suction centrifugal pump according to claim 1, characterized in that: The soundproof cover comprises a soundproof plate and suction cotton, and the soundproof plate and suction cotton are both arranged on the soundproof cover.

5. The variable head single-stage single-suction centrifugal pump according to claim 1, characterized in that: The soundproof cover is provided with a heat dissipation mechanism, which is used to dissipate heat from the single-stage single-suction centrifugal pump body, and the heat dissipation mechanism includes: Rotating two vertical shafts mounted on the soundproof cover; A plurality of fan blades respectively fixedly mounted on the two vertical shafts; A power motor is fixedly mounted on the top of the soundproof cover, and a double-grooved wheel is fixedly sleeved on the output shaft of the power motor; Two single groove wheels respectively fixedly mounted on the two vertical shafts; Two belts are sleeved on the double-groove pulley and the two single-groove pulleys.

6. The variable head single-stage single-suction centrifugal pump according to claim 5, characterized in that: The output shaft of the power motor is rotatably connected to the sound insulation cover, and the sound insulation cover is fixedly mounted on the base by bolts.

7. The variable head single-stage single-suction centrifugal pump according to claim 1, characterized in that: The soundproof cover and the single-stage single-suction centrifugal pump body are both provided with a controller, and the controller is used for performing control operations.

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