Energy-saving centrifugal pump with filter device convenient to replace

Abstract

The application is suitable for the technical field of centrifugal pumps, and provides an energy-saving centrifugal pump with filter devices convenient to replace, which comprises a liquid pumping cylinder and a centrifugal cylinder; an annular liquid collecting pipe is fixedly installed on the inner wall of the liquid pumping cylinder; a plurality of C-shaped pipes are symmetrically and fixedly penetrated through the inner wall of the liquid pumping cylinder on both sides of the annular liquid collecting pipe; a first rotating part is slidably arranged in each C-shaped pipe above the annular liquid collecting pipe, and a second rotating part is slidably arranged in each C-shaped pipe below the annular liquid collecting pipe; a water outlet is arranged between the annular liquid collecting pipe and each C-shaped pipe; each of the first rotating part and the second rotating part comprises a C-shaped sliding pipe with a sealed end; a filter device is clamped and arranged in the C-shaped sliding pipe; the device realizes reciprocating change from backwashing state to suction filtering state by controlling each first rotating part and each second rotating part to slide along the corresponding C-shaped pipe, realizes online cleaning of each group of filter devices, and effectively prevents the filter devices from being blocked to affect the pumping capacity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of centrifugal pumps, in particular to an energy-saving centrifugal pump with filter device convenient to replace. BACKGROUND

[0002] With the continuous advancement of industrialization, centrifugal pumps are widely used in various water treatment, petroleum chemical industry, water supply system and agricultural irrigation fields. As the core equipment for liquid transportation, centrifugal pumps have the advantages of large flow, high efficiency and simple operation, and are widely used in many production and life scenes.

[0003] During a long running process, centrifugal pumps are easily affected by impurities, sand and other substances in water, which can cause damage or failure inside the pump body, reducing the working efficiency and service life of the pump. Therefore, a foot valve is usually installed at the water inlet of the centrifugal pump to prevent water from flowing back into the pump body after shutdown, and to avoid cavitation or damage inside the pump due to reverse flow. In the foot valve structure, a filter function is added to pre-treat the incoming water through a filter screen or filter device to intercept impurities in the water and protect the pump body from damage.

[0004] However, this kind of technology still has some defects, the filtering effect is not ideal, and the functions of online cleaning and quick replacement cannot be realized, the filter screen is easy to block or damage, which leads to unstable operation of the pump, reduces the pumping capacity and shortens the service life of the filter device. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide an energy-saving centrifugal pump with filter device convenient to replace.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model provides an energy -conserving centrifugal pump of convenient filter device replacement, including pumping cylinder and fixedly installed centrifugal cylinder in pumping cylinder top and intercommunication, the inner wall of pumping cylinder is fixedly installed with annular collecting liquid pipe, the bilateral symmetry of annular collecting liquid pipe is fixed with a plurality of C shaped guide pipe through the inner wall of pumping cylinder, the inside of each C shaped guide pipe located annular collecting liquid pipe top is slidably arranged with first rotation part, and the inside of each C shaped guide pipe below is slidably arranged with second rotation part, the drainage outlet is opened between annular collecting liquid pipe and each C shaped guide pipe, the inner peripheral side of C shaped guide pipe is opened with avoiding slot, the inner wall between avoiding slot is fixed with arc rod, the inner wall of C shaped guide pipe is opened with pumping port, first rotation part and second rotation part all include the C shaped slide pipe of one end for the closed setting, the inside of C shaped slide pipe is all connected with filter device, the inner wall of C shaped slide pipe is opened with intercommunication, the inner peripheral side of C shaped slide pipe is fixed with the slide sleeve of arc rod sliding cooperation, the slide sleeve and avoiding slot are fixed with the arc spring of arc rod sleeve, the side of C shaped guide pipe is opened with blowdown.

[0008] Further, the centrifugal cylinder top is fixedly installed with pumping motor, the inner top of centrifugal cylinder is rotatably arranged with rotating shaft, the output end of pumping motor is fixedly connected with the top end of rotating shaft, the bottom end of rotating shaft is fixed with impeller, the outer wall of centrifugal cylinder is provided with the communicating drainage main pipe, and the drainage branch pipe is arranged in communication between drainage main pipe and annular collecting liquid pipe.

[0009] Further, the C shaped guide pipe bilateral symmetry fixed with side cover plate is located in avoiding slot, the outer peripheral side of pumping cylinder bilateral symmetry fixed with annular baffle is located in annular collecting liquid pipe, the outer peripheral side of pumping cylinder is fixed from top to bottom with two groups of fixed rings, and the uniform installation of a plurality of piston parts is carried out on the fixed ring.

[0010] Further, the piston part includes piston cylinder fixed on fixed ring and piston rod through sliding arrangement on the surface of corresponding annular baffle, the sliding rail is fixed on the peripheral side of piston rod, the sliding groove that is slidably matched with sliding rail is opened in the inner wall of piston cylinder, the pressing plate is fixed on the bottom end of piston rod, the slide bar is fixed on the side close to the closed end of C shaped slide pipe on first rotation part and the side close to the open end of C shaped slide pipe on second rotation part, and the ball head is fixed on the end of slide bar.

[0011] Further, the arc slot with the same center as C shaped guide pipe is opened in the side of C shaped guide pipe below annular collecting liquid pipe and located on both sides of corresponding blowdown, and the arc slot is slidably matched with corresponding slide bar.

[0012] Further, the piston rod top is fixed with a piston block; the piston block is fixedly connected with a tension spring between the piston block and the inner top of the piston cylinder; the piston cylinder side surface is communicated with a first liquid discharge pipe near the top, and a second liquid discharge pipe near the bottom; the second liquid discharge pipe on the piston cylinder is connected with the first liquid discharge pipe on the piston cylinder below; the first liquid discharge pipe and the second liquid discharge pipe are provided with a one-way valve; the piston block surface is provided with an L-shaped slot.

[0013] Further, the piston cylinder top is communicated with a second hose; the water pumping motor is electrically connected with a cable; the water pumping motor is uniformly connected with a plurality of steel wires; the cable, the second hose and the steel wire are tightened by a plurality of straps; the water discharge main pipe end is connected with a water delivery pipe; the water delivery pipe is communicated with an external pipe; the external pipe is communicated with a connecting branch pipe; the second hose is connected with the connecting branch pipe; the connecting branch pipe is provided with an electromagnetic valve.

[0014] Further, the filter device comprises an arc-shaped frame slidingly arranged on the inner wall of the C-shaped sliding pipe; the arc-shaped frame is fixedly provided with a filter plate inside; the opposite sides of the arc-shaped frame are both provided with a guide hole; the guide hole is slidingly provided with a plug rod; the plug rod end is fixedly provided with a return spring between the guide hole inner wall; the opposite sides of the C-shaped sliding pipe are symmetrically provided with a plug hole matched with the plug rod plug-in cooperation near the opening end.

[0015] Further, a plurality of positioning holes are uniformly arranged on the surface of the annular baffle; an outer blocking part is slidingly arranged between the two annular baffles; the outer blocking part comprises an outer ring; the inner wall of the outer ring is rotatably provided with an inner ring; the inner peripheral side of the inner ring is fixedly provided with a threaded ring screwed with the liquid pumping cylinder; a plurality of supporting legs are fixedly arranged on the surface of the inner ring; a plurality of blocking rods are uniformly fixed on the bottom surface of the outer ring and slidingly matched with the corresponding positioning holes.

[0016] The beneficial effects of the present application are:

[0017] 1. By the cooperation between the components, the first rotating part and the second rotating part are sequentially slid along the corresponding C-shaped conduit, the reciprocating change of the first rotating part and the second rotating part from backwashing state to suction filtering state is realized, the online cleaning of each group of filter devices is realized, the service life of the filter device is improved, and the influence of the filter device being blocked on the pumping capacity is effectively prevented.

[0018] 2. By sliding the filter device into the C-shaped sliding pipe, when the plug rod is slid to the same axis as the corresponding plug hole, the plug rod is inserted into the corresponding plug hole under the elastic resetting action of the return spring, the quick assembly of the filter device is completed, the operation is simple, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Structure diagram of the whole of the application.

[0020] Figure 2 Structure diagram of the suction cylinder of the application.

[0021] Figure 3 Structure diagram of the external tube of the application. Figure 2 Partial enlarged view of A area of the application.

[0022] Figure 4 Structure diagram of the external tube of the application.

[0023] Figure 5 Sectional view of the suction cylinder of the application from the front perspective.

[0024] Figure 6 Partial enlarged view of B area of the application. Figure 5

[0025] Figure 7 Structure diagram of the application from another angle. Figure 5

[0026] Structure diagram of the assembly of the suction cylinder and the first rotating part and the second rotating part. Figure 8

[0027] Partial enlarged view of C area of the application. Figure 9 Figure 8

[0028] Figure 10 Sectional view of the application from the front perspective. Figure 8

[0029] Partial enlarged view of D area of the application. Figure 11 Figure 10 Structure diagram of the application from another angle.

[0030] Figure 12 Figure 10 Structure diagram of the first rotating part of the application.

[0031] Figure 13 Structure diagram of the first rotating part of the application from another angle.

[0032] Figure 14 Structure diagram of the second rotating part of the application. Figure 13

[0033] Structure diagram of the second rotating part of the application from another angle. Figure 15

[0034] Structure diagram of the second rotating part of the application from another angle. Figure 16

[0035] Figure 17 ​​​​​​Structure diagram of the outer blocking part of the application.

[0036] Figure 18 Structure diagram of the filter device of the application.

[0037] In the figure: 1, liquid suction cylinder; 2, centrifugal cylinder; 3, annular liquid collecting pipe; 4, C-shaped guide pipe; 5, first rotating part; 6, second rotating part; 7, drainage port; 8, avoiding groove; 9, arc-shaped rod; 10, liquid suction port; 11, C-shaped sliding pipe; 12, filter device; 13, communication port; 14, sliding sleeve; 15, arc-shaped spring; 16, blowdown port; 17, water pumping motor; 18, rotating shaft; 19, impeller; 20, drainage main pipe; 21, drainage branch pipe; 22, side cover plate; 23, annular baffle; 24, fixing ring; 25, piston cylinder; 26, piston rod; 27, pressing plate; 28, sliding rod; 29, ball head; 30, arc-shaped groove; 31, piston block; 32, tension spring; 33, first liquid discharge pipe; 34, second liquid discharge pipe; 35, first hose; 36, second hose; 37, cable; 38, steel wire rope; 39, water delivery pipe; 40, external pipe; 41, connecting branch pipe; 42, arc-shaped frame; 43, filter plate; 44, guide hole; 45, insertion rod; 46, insertion hole; 47, positioning hole; 48, outer blocking part; 49, outer ring; 50, inner ring; 51, threaded ring; 52, supporting leg; 53, blocking rod; 54, L-shaped groove. DETAILED DESCRIPTION

[0038] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It should be noted that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meaning as that generally understood by the ordinary skilled person in the technical field to which the present application belongs.

[0040] In the present application, unless otherwise specified, the orientation such as "upper", "lower" is generally directed to the direction shown in the drawings, or is directed to the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left", "right" is generally directed to the left and right shown in the drawings; "inner", "outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0041] Embodiment one, please refer to Figures 1-18 The present application provides the following technical solutions:

[0042] The utility model provides an energy -conserving centrifugal pump of convenient filter device replacement, specifically, including the liquid pumping cylinder 1 and the centrifugal cylinder 2 of fixed installation at the top of liquid pumping cylinder 1 and intercommunication, the annular collecting liquid pipe 3 is fixedly installed in the inner wall of liquid pumping cylinder 1, the C-shaped guide pipe 4 of symmetry is fixedly arranged in the inner wall of liquid pumping cylinder 1 and is located at the both sides of annular collecting liquid pipe 3, the first rotation part 5 is slidably arranged in each C-shaped guide pipe 4 above annular collecting liquid pipe 3, and the second rotation part 6 is slidably arranged in each C-shaped guide pipe 4 below it, the drain outlet 7 is arranged between annular collecting liquid pipe 3 and each C-shaped guide pipe 4, the avoiding slot 8 is formed in the inner peripheral side of C-shaped guide pipe 4, the arc-shaped rod 9 is fixed between the inner wall of avoiding slot 8, the liquid pumping port 10 is formed in the inner wall of C-shaped guide pipe 4, the C-shaped slide pipe 11 with one end being closed is arranged in the first rotation part 5 and the second rotation part 6, the filter device 12 is clamped and arranged in the C-shaped slide pipe 11, the communicating port 13 is formed in the inner wall of C-shaped slide pipe 11, the sliding sleeve 14 that is slidably connected with arc-shaped rod 9 is fixed on the inner peripheral side of C-shaped slide pipe 11, the arc-shaped spring 15 that is sleeved on arc-shaped rod 9 is fixed between sliding sleeve 14 and avoiding slot 8, the blowdown port 16 is formed in the side of C-shaped guide pipe 4.

[0043] The working principle of the embodiment is as follows:

[0044] Through the cooperation of various components, the first rotation part 5 and the second rotation part 6 are controlled to slide along the corresponding C-shaped guide pipe 4 in turn, the reciprocating change of the first rotation part 5 and the second rotation part 6 from backwashing state to suction filtering state is realized, the online cleaning of each group of filter devices 12 is realized, the service life of the filter device 12 is improved, the influence of the filter device 12 on the pumping capacity is effectively prevented, and the service life of the energy -conserving centrifugal pump is improved.

[0045] The working principle of the embodiment is as follows: Figures 1-18 The second embodiment is improved on the basis of the first embodiment, and specifically, the water pumping motor 17 is fixedly installed at the top of the centrifugal cylinder 2, the rotating shaft 18 is rotatably arranged in the top of the centrifugal cylinder 2, the output end of the water pumping motor 17 is fixedly connected with the top end of the rotating shaft 18, the impeller 19 is fixed to the bottom end of the rotating shaft 18, the water drainage main pipe 20 is arranged in communication with the outer wall of the centrifugal cylinder 2, and the water drainage branch pipe 21 is arranged in communication between the water drainage main pipe 20 and the annular collecting liquid pipe 3.

[0046] The side cover plate 22 is symmetrically fixed to the both sides of the C-shaped guide pipe 4, the annular baffle 23 is symmetrically fixed to the both sides of the annular collecting liquid pipe 3 on the outer peripheral side of the liquid pumping cylinder 1, the two groups of fixed rings 24 are fixed from top to bottom on the outer peripheral side of the liquid pumping cylinder 1, and the piston part is uniformly arranged on the fixed ring 24.

[0047] The piston part comprises a piston cylinder 25 fixed on the fixed ring 24 and a piston rod 26 slidingly arranged through the surface of the corresponding annular baffle 23; the piston rod 26 is fixed with a sliding rail on the lateral surface; the inner wall of the piston cylinder 25 is provided with a sliding groove in sliding cooperation with the sliding rail; the bottom end of the piston rod 26 is fixed with a pressing plate 27; the C-shaped sliding pipe 11 on the first rotating part 5 is fixed with a sliding rod 28 on the lateral surface close to the sealing end thereof, and the C-shaped sliding pipe 11 on the second rotating part 6 is fixed with a sliding rod 28 on the lateral surface close to the open end thereof; the end of the sliding rod 28 is fixed with a ball head 29.

[0048] The C-shaped conduit 4 is provided with an arc-shaped groove 30 with the same center as the C-shaped conduit 4 on the lateral surface thereof and located on the two sides of the corresponding blowdown opening 16 below the annular collecting pipe 3; the arc-shaped groove 30 is in sliding cooperation with the corresponding sliding rod 28.

[0049] The piston rod 26 is fixed with a piston block 31 on the top thereof; the piston block 31 is fixedly connected with a tension spring 32 between the piston block 31 and the inner top of the piston cylinder 25; the piston cylinder 25 is communicated with a first liquid discharge pipe 33 on the lateral surface thereof close to the top thereof, and is communicated with a second liquid discharge pipe 34 on the lateral surface thereof close to the bottom thereof; the second liquid discharge pipe 34 on the piston cylinder 25 is connected with the first liquid discharge pipe 33 on the piston cylinder 25 directly below the second liquid discharge pipe 34 through a first hose 35; the first liquid discharge pipe 33 and the second liquid discharge pipe 34 are both provided with a one-way valve; the surface of the piston block 31 is provided with an L-shaped groove 54.

[0050] The one-way valve arranged on the first liquid discharge pipe 33 prevents the water outside from entering the piston cylinder 25 through the first liquid discharge pipe 33, and the one-way valve arranged on the second liquid discharge pipe 34 prevents the water inside the first hose 35 from entering the piston cylinder 25 through the corresponding second liquid discharge pipe 34.

[0051] The top of each piston cylinder 25 above is communicated with a second hose 36; the water pumping motor 17 is electrically connected with a cable 37; the water pumping motor 17 is uniformly connected with a plurality of steel wire ropes 38; the cable 37, the second hose 36 and the steel wire ropes 38 are tightly tied by a plurality of ties; the end of the water discharge main pipe 20 is connected with a water delivery pipe 39; the water delivery pipe 39 is communicated with an external pipe 40; the external pipe 40 is communicated with a connecting branch pipe 41; each second hose 36 is connected with the connecting branch pipe 41; the connecting branch pipe 41 is provided with an electromagnetic valve.

[0052] The external pipe 40 is arranged above the liquid surface, so that the electromagnetic valve is arranged above the liquid surface.

[0053] The working principle of the second embodiment is as follows:

[0054] In the initial state, as shown in Figure 5 and Figure 6As shown, the upper group of first rotating parts 5 is in backwashing state, that is, the C-shaped slide pipe 11 of the first rotating part 5 is arranged inside the corresponding C-shaped guide pipe 4 at both ends, the blowdown port 16 is arranged between the two ends, the communication port 13 is communicated with the annular collecting pipe 3 through the corresponding drain port 7, and the C-shaped slide pipe 11 blocks the corresponding liquid suction port 10; the lower group of second rotating parts 6 is in water suction and filtration state, that is, the C-shaped slide pipe 11 of the second rotating part 6 extends outside at the closed end, the communication port 13 is communicated with the corresponding liquid suction port 10, the open end of the C-shaped slide pipe 11 is communicated with the outside of the liquid suction cylinder 1, and the C-shaped slide pipe 11 blocks the drain port 7 on the annular collecting pipe 3.

[0055] By starting the water suction motor 17 to drive the impeller 19 inside the centrifugal cylinder 2 to rotate, water outside is sucked into the C-shaped slide pipe 11 of the first rotating part 5, filtered by the filter device 12 inside, and discharged into the inside of the liquid suction cylinder 1 through the communication port 13, to complete the water suction operation, and the C-shaped slide pipe 11 of the first rotating part 5 blocks the corresponding liquid suction port 10. In this state, the first rotating part 5 does not perform water suction.

[0056] The water sucked into the inside of the liquid suction cylinder 1 is discharged through the drain main pipe 20, most of the water is discharged through the water delivery pipe 39, and part of the water is discharged into the inside of the annular collecting pipe 3 through the drain branch pipe 21. The water in the inside of the annular collecting pipe 3 is sent into the inside of the C-shaped slide pipe 11 of the first rotating part 5 through the opened drain ports 7 of each group, and backwashes the corresponding filter device 12. The blockage on the filter device 12 is discharged through the blowdown port 16 with the water flow, realizing online backwashing of the corresponding filter device 12 and improving the service life of the filter device 12.

[0057] The electromagnetic valve is started, part of the water discharged through the drain main pipe 20 is discharged to each group of second soft pipes 36 through the connecting branch pipe 41, and is input into the inside of the corresponding piston cylinder 25 of the first rotating part 5. The water input amount of the second soft pipe 36 is greater than the water discharge amount of the corresponding first liquid discharge pipe 33, so as to gradually extrude the corresponding piston block 31 to slide and descend along the corresponding piston cylinder 25, the tension spring 32 is stretched, so as to drive the pressing plate 27 at the bottom of the piston rod 26 to slide and descend, extruding the ball head 29 on the first rotating part 5, so as to drive the C-shaped slide pipe 11 of the first rotating part 5 to slide inside the corresponding C-shaped guide pipe 4, so that the open end of the corresponding C-shaped slide pipe 11 is slid to be communicated with the outside of the liquid suction cylinder 1, the communication port 13 is communicated with the liquid suction port 10, the blowdown port 16 and the drain port 7 are blocked by the C-shaped slide pipe 11, the corresponding arc-shaped spring 15 is compressed, and the first rotating part 5 changes from backwashing state to water suction and filtration state.

[0058] When the L-shaped slot 54 on the first rotating part 5 is aligned with the second drain pipe 34 on the piston block 31, water is discharged through the second drain pipe 34, the first hose 35, and into the lower piston cylinder 25, and the water discharge amount of the first hose 35 is greater than that of the corresponding first drain pipe 33 on the lower piston cylinder 25, thereby gradually extruding the corresponding piston block 31 to slide downward along the corresponding piston cylinder 25, stretching the tension spring 32, and driving the pressing plate 27 at the bottom of the piston rod 26 to slide downward and extrude the ball head 29 on the second rotating part 6, thereby driving the C-shaped sliding pipe 11 of the second rotating part 6 to slide inside the corresponding C-shaped guide pipe 4. The C-shaped sliding pipe 11 of the second rotating part 6 is arranged at both ends inside the corresponding C-shaped guide pipe 4, the drain port 16 is arranged between the two ends of the C-shaped sliding pipe 11, the communication port 13 is communicated with the annular collecting pipe 3 through the corresponding drain port 7, and the C-shaped sliding pipe 11 blocks the corresponding liquid suction port 10, so that the second rotating part 6 is changed from the water pumping and filtering state to the backwashing state.

[0059] When the electromagnetic valve is closed, the piston block 31 is driven to slide upward along the corresponding piston cylinder 25 under the elastic restoring action of the corresponding tension spring 32, thereby discharging the water in the piston cylinder 25 through the corresponding first drain pipe 33, and completing the rotational reset of each group of first rotating parts 5 and second rotating parts 6. In summary, the opening and closing of the electromagnetic valve are periodically controlled to realize the reciprocating change of the first rotating part 5 and the second rotating part 6 from the backwashing state to the pumping and filtering state, realize the online cleaning of each group of filtering devices 12, improve the service life of the filtering device 12, and effectively prevent the filtering device 12 from being blocked to affect the pumping capacity.

[0060] In this embodiment, the filtering device 12 includes an arc-shaped frame 42 slidingly arranged on the inner wall of the C-shaped sliding pipe 11. Figures 1-18 The arc-shaped frame 42 is internally fixed with a filter plate 43, and the relative two side surfaces of the arc-shaped frame 42 are each provided with a guide hole 44. The guide hole 44 is internally slidingly provided with a plug rod 45, and a reset spring is fixed between the end of the plug rod 45 and the inner wall of the guide hole 44. The relative two side surfaces of the C-shaped sliding pipe 11 are symmetrically provided with plug holes 46 near the opening ends thereof, which are in plug-in cooperation with the plug rod 45.

[0061] The annular baffle 23 is uniformly provided with a plurality of positioning holes 47 on the surface thereof, and an outer blocking part 48 is slidingly arranged between the two annular baffles 23. The outer blocking part 48 includes an outer ring 49, and the inner wall of the outer ring 49 is rotationally provided with an inner ring 50. The inner side surface of the inner ring 50 is fixed with a threaded ring 51 which is screwed with the liquid suction cylinder 1. A plurality of supporting legs 52 are fixed on the surface of the inner ring 50, and a plurality of blocking rods 53 are uniformly fixed on the bottom surface of the outer ring 49 in sliding cooperation with the corresponding positioning holes 47.

[0062] The working principle of this embodiment is as follows:

[0063] When the filter device 12 is slid into the C-shaped slide pipe 11, the insertion rod 45 is inserted into the corresponding insertion hole 46 under the elastic reset action of the reset spring when the insertion rod 45 is slid to the coaxial center of the corresponding insertion hole 46, the quick assembly of the filter device 12 is completed, the operation is simple, the work efficiency is improved, and the filter device 12 is convenient to replace quickly.

[0064] When each group of blocking rods 53 is slid into the corresponding positioning hole 47, the inner ring 50 is rotated together with the threaded ring 51 by rotating the support leg 52, so that the threaded ring 51 is screwed to the outer wall of the liquid suction cylinder 1, the assembly of the outer blocking part 48 and the liquid suction cylinder 1 is completed, the blocking rods 53 effectively block the waterweeds and larger-volume garbage, and the service life of the whole device is improved.

[0065] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0066] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0067] It should be noted that the terms "first", "second", and the like used in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0068] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0069] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-described embodiments. Any improvement and decoration made without departing from the principles of the present application should be considered as the protection scope of the present application.

Claims

1. An energy-saving centrifugal pump with filter device convenient to replace, comprising a suction cylinder (1) and a centrifugal cylinder (2) fixedly installed on the top of the suction cylinder (1) and communicating with each other; characterized in that: The inner wall of the liquid pumping cylinder (1) is fixedly provided with an annular liquid collecting pipe (3); a plurality of C-shaped pipes (4) are symmetrically and fixedly provided on the inner wall of the liquid pumping cylinder (1) on both sides of the annular liquid collecting pipe (3); a first rotating part (5) is slidably arranged in each C-shaped pipe (4) above the annular liquid collecting pipe (3), and a second rotating part (6) is slidably arranged in each C-shaped pipe (4) below the annular liquid collecting pipe (3); a drain port (7) is formed between the annular liquid collecting pipe (3) and each C-shaped pipe (4); An avoiding groove (8) is formed in the inner circumferential side of the C-shaped pipe (4); an arc-shaped rod (9) is fixedly arranged between the inner walls of the avoiding groove (8); a liquid pumping port (10) is formed in the inner wall of the C-shaped pipe (4); the first rotating part (5) and the second rotating part (6) each comprise a C-shaped sliding pipe (11) with one end being closed; a filtering device (12) is arranged in the C-shaped sliding pipe (11); a communication port (13) is formed in the inner wall of the C-shaped sliding pipe (11); a sliding sleeve (14) which is in sliding cooperation with the arc-shaped rod (9) is fixedly arranged on the inner circumferential side of the C-shaped sliding pipe (11); an arc-shaped spring (15) which is sleeved on the arc-shaped rod (9) is fixedly arranged between the sliding sleeve (14) and the avoiding groove (8); a sewage discharging port (16) is formed in the side of the C-shaped pipe (4).

2. The energy efficient centrifugal pump with easy replacement of filter arrangement as claimed in claim 1 wherein: A water pumping motor (17) is fixedly arranged on the top of the centrifugal cylinder (2); a rotating shaft (18) is rotatably arranged in the inner top of the centrifugal cylinder (2); the output end of the water pumping motor (17) is fixedly connected with the top end of the rotating shaft (18); a vane (19) is fixedly arranged on the bottom end of the rotating shaft (18); a drain main pipe (20) is arranged in communication with the outer wall of the centrifugal cylinder (2); a drain branch pipe (21) is arranged in communication between the drain main pipe (20) and the annular liquid collecting pipe (3).

3. The energy efficient centrifugal pump with easy replacement of filter arrangement as claimed in claim 2 wherein: The C-shaped pipes (4) are symmetrically fixed with side cover plates (22) on both sides of the avoiding groove (8); annular baffle plates (23) are symmetrically fixed on the outer circumferential side of the liquid pumping cylinder (1) on both sides of the annular liquid collecting pipe (3); two groups of fixing rings (24) are fixedly arranged on the outer circumferential side of the liquid pumping cylinder (1) from top to bottom; a plurality of piston parts are uniformly arranged on the fixing rings (24).

4. The energy efficient centrifugal pump with easy replacement of filter arrangement as claimed in claim 3 wherein: The piston part comprises a piston cylinder (25) fixed on the fixing ring (24) and a piston rod (26) slidably arranged on the surface of the corresponding annular baffle plate (23); a slide rail is fixedly arranged on the circumferential side of the piston rod (26); a slide groove in sliding cooperation with the slide rail is formed in the inner wall of the piston cylinder (25); a pressing plate (27) is fixedly arranged on the bottom end of the piston rod (26); a slide rod (28) is fixedly arranged on the side of the C-shaped sliding pipe (11) on the first rotating part (5) close to the closed end and on the side of the C-shaped sliding pipe (11) on the second rotating part (6) close to the open end; a ball head (29) is fixedly arranged on the end of the slide rod (28).

5. The energy efficient centrifugal pump with easy replacement of filter arrangement as claimed in claim 4 wherein: Arc-shaped grooves (30) with the same center as the C-shaped pipes (4) are formed on the side of the C-shaped pipes (4) below the annular liquid collecting pipe (3) on both sides of the corresponding sewage discharging ports (16); the arc-shaped grooves (30) are in sliding cooperation with the corresponding slide rods (28).

6. The energy efficient centrifugal pump with easy replacement of filter arrangement as claimed in claim 5 wherein: The piston rod (26) top is fixed with a piston block (31); the piston block (31) is fixedly connected with the top of the piston cylinder (25) between the spring (32); the piston cylinder (25) is provided with a first drainage pipe (33) in communication with its top, and a second drainage pipe (34) in communication with its bottom; the second drainage pipe (34) on the piston cylinder (25) is connected with the first drainage pipe (33) on the piston cylinder (25) below it through the first hose (35); the first drainage pipe (33) and the second drainage pipe (34) are provided with a one-way valve; the piston block (31) surface is provided with an L-shaped slot (54).

7. An energy efficient centrifugal pump with easy replacement of filter arrangement as claimed in claim 6 wherein: The top of each piston cylinder (25) is provided with a second hose (36) in communication; the water pumping motor (17) is electrically connected with a cable (37); the water pumping motor (17) is uniformly connected with a plurality of steel wire ropes (38); the cable (37), the second hose (36) and the steel wire rope (38) are tightened by a plurality of straps; the end of the drain main pipe (20) is connected with a water delivery pipe (39); the water delivery pipe (39) is provided with an external pipe (40) in communication; the external pipe (40) is provided with a connection branch pipe (41) in communication; each second hose (36) is connected with the connection branch pipe (41); the connection branch pipe (41) is provided with a solenoid valve.

8. The energy efficient centrifugal pump with easy replacement of filter arrangement as claimed in claim 7 wherein: The filter device (12) includes an arc-shaped frame (42) slidingly arranged on the inner wall of the C-shaped sliding pipe (11); the arc-shaped frame (42) is fixedly provided with a filter plate (43) inside; the arc-shaped frame (42) is provided with a guide hole (44) on the opposite sides; the guide hole (44) is slidingly provided with a plug rod (45); the end of the plug rod (45) is fixed with a return spring between the inner wall of the guide hole (44); the C-shaped sliding pipe (11) is symmetrically provided with a plug hole (46) matched with the plug rod (45) on the opposite sides near the opening end.

9. The energy efficient centrifugal pump with easy replacement of filter arrangement as claimed in claim 8 wherein: The surface of the annular baffle (23) is uniformly provided with a plurality of positioning holes (47); the outer baffle (48) is slidingly arranged between the two annular baffles (23); the outer baffle (48) includes an outer ring (49); the inner wall of the outer ring (49) is rotatably provided with an inner ring (50); the inner circumferential surface of the inner ring (50) is fixedly provided with a threaded ring (51) screwed with the liquid pumping cylinder (1); the surface of the inner ring (50) is fixedly provided with a plurality of supporting legs (52); the bottom surface of the outer ring (49) is uniformly fixed with a plurality of stop rods (53) slidingly matched with the corresponding positioning holes (47).

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