Energy-saving centrifugal pump cleaning mechanism

Abstract

The invention provides an energy-saving centrifugal pump cleaning mechanism, and relates to the technical field of centrifugal pump cleaning, the energy-saving centrifugal pump cleaning mechanism comprises a centrifugal pump body, a switching seat, a switching structure, an adapter seat frame, an impeller and a centrifugal pump motor, a water inlet is machined in the switching seat, a water inlet pipe is welded to the outer wall of one side of the centrifugal pump body, and a water outlet is welded to the top of the water inlet pipe; the switching structure comprises a separation lantern ring, a threaded rod and a ring frame; a plurality of limiting grooves are formed in the side, close to the impeller, of the switching base, and the inner wall of the lantern ring and the interior of the switching base are separated to form a water accumulation cavity. According to the technical scheme, the valve plate moves towards the bottom in the valve body, a channel at the bottom of the valve body is cut off, meanwhile, the separation lantern ring is connected to the side, close to the switching base, of the impeller in a sleeving mode, and water is prevented from being continuously pumped when the impeller rotates in the forward direction; water accumulated in the water outlet is sprayed out through the interior of the switching base, the surface of the impeller is flushed, comprehensive energy loss can be reduced, and finally the energy-saving effect is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of centrifugal pump cleaning, and particularly relates to an energy-saving centrifugal pump cleaning mechanism. BACKGROUND

[0002] A centrifugal pump works by rotating an impeller to make water move in a centrifugal manner. Before starting, the pump casing and the water suction pipe must be filled with water, then the motor is started to drive the impeller and water to rotate at high speed, and the water is thrown outward from the impeller, and flows into the water pump pressure pipe through the flow channel of the volute pump casing.

[0003] The basic structure of a centrifugal pump is composed of eight parts, namely an impeller, a pump body, a pump cover, a water baffle, a pump shaft, a bearing, a sealing ring, a packing box and an axial force balancing device. The centrifugal pump is widely used in power, metallurgy, coal, building materials and other industries to transport slurry containing solid particles, such as water power ash removal in thermal power plants, ore slurry transportation in metallurgical ore dressing plants, coal slurry and heavy medium transportation in coal washing plants, etc. When the centrifugal pump works, the pump needs to be placed on the land, the water suction pipe is placed in the water, and the pump needs to be primed before starting.

[0004] The patent file with the publication number CN118959365B is a self-cleaning chemical centrifugal pump, which passes the filtered material into the transmission pipe, cleaning pipe and cleaning nozzle through the water inlet pipe, then washes the front of the centrifugal pump impeller through the cleaning nozzle, simultaneously drives the transmission pipe, cleaning pipe and cleaning nozzle to reciprocating rotate through the transmission mechanism, and the centrifugal pump impeller rotates, so that the scale on one side of the centrifugal pump impeller is comprehensively washed and cleaned. When chemical scale needs to be cleaned by chemical reaction, the pump body pumps chemical agents into the transmission pipe to wash the impeller, so that the scale on the front of the impeller is comprehensively self-cleaned.

[0005] The patent file with the publication number CN118622712B is a multi-stage centrifugal pump, which is provided with a water spraying mechanism inside the single-stage shell, can spray water into the single-stage shell, and the simultaneous operation of the water spraying mechanisms in the multiple single-stage shells can simultaneously water the multiple-stage cavities of the multi-stage centrifugal pump. The efficient water filling mode reduces the influence of air binding phenomenon. In the first state, the water spraying mechanism fills water in the single-stage shell, ensures that the inside of each single-stage shell is filled with liquid before the pump starts, and avoids air binding phenomenon. In the second state, the water spraying mechanism sprays high-pressure water to clean the surface of the guide vane and the impeller, removes the gradually generated attachments in the use process, maintains the efficient operation of the pump, and realizes the dual functions of water filling and cleaning.

[0006] However, in the process of implementing the above technical solutions, it is found that the above technical solutions have the following technical problems:

[0007] The existing self-cleaning chemical centrifugal pump (announcement number: CN118959365B) is configured with a support cleaning nozzle water spraying structure on the pump, which can comprehensively flush and clean the scale on one side of the centrifugal pump impeller. The multi-stage centrifugal pump (announcement number: CN118959365B) sets a water spraying structure inside the single-stage shell, which is configured with a motor, a high-pressure nozzle, a booster pump and other related components, which can clean the attachments on the surface of the centrifugal pump impeller. However, in actual application, the water flushing method using the nozzle needs to provide a matching pump pressure device. In addition to providing energy for the centrifugal pump, additional energy is also needed for the matching pump pressure device, which is not conducive to energy saving. SUMMARY

[0008] In order to overcome the shortcomings of the existing water spraying structure for cleaning the impeller of the centrifugal pump, which needs to provide a matching pump pressure device, in addition to providing energy for the centrifugal pump, additional energy is also needed for the matching pump pressure device, which is not conducive to energy saving, the embodiments of the present application provide an energy-saving centrifugal pump cleaning mechanism. By making the movable end of the electric telescopic rod received in the inside of the fixed end, the distance between the linkage plate and the water inlet pipe is reduced. On the one hand, the valve plate moves inside the valve body to the bottom, so that the bottom of the exhaust port is connected with the inside of the water inlet pipe, and the passage at the bottom of the valve body is blocked, preventing the impeller from continuing to pump water when it rotates forward. On the other hand, the two drive arms move towards the bottom, and the drive slope on one side of the bottom of the drive arm cooperates with the inner wall of the bottom of the movable slot to make the ring frame move along the axis of the water inlet pipe. This facilitates the pushing of the separation sleeve ring outside the switching seat to the side of the impeller close to the switching seat by the threaded rod, so that the blocking of the passage inside the valve body and the plugging outside the impeller are synchronized.

[0009] At the same time, by making the valve plate move inside the valve body to the bottom, so that the bottom of the exhaust port is connected with the inside of the water inlet pipe, and the passage at the bottom of the valve body is blocked, and the separation sleeve ring is sleeved to the side of the impeller close to the switching seat, preventing the impeller from continuing to pump water when it rotates forward. When the centrifugal pump motor drives the impeller to rotate in the opposite direction, the impeller discharges the gas inside the centrifugal pump body from the exhaust port, causing the water accumulated inside the water outlet to be sprayed out through the inside of the switching seat and flush the surface of the impeller. This can achieve the effect of cleaning the attachments on the surface of the impeller without the need for an additional cleaning system, avoiding the increase in comprehensive energy consumption, and ultimately achieving the effect of energy saving.

[0010] The technical solution adopted by the embodiments of the present application to solve the technical problems is:

[0011] An energy-saving centrifugal pump cleaning mechanism, comprising a centrifugal pump body, a switching seat and a switching structure, the switching seat is assembled inside the centrifugal pump body, and the inside is processed with a water inlet;

[0012] The switching structure is mounted externally to the centrifugal pump body and internally to the centrifugal pump body;

[0013] The outer wall of one side of the centrifugal pump body is welded with a water inlet pipe, the top of the water inlet pipe is welded with a water outlet, the inside of the centrifugal pump body is provided with an impeller on the side away from the water inlet pipe, the side away from the water inlet pipe of the centrifugal pump body is assembled with an adapter seat frame, the inside of the adapter seat frame is assembled with a centrifugal pump motor connected to the impeller at one end;

[0014] The switching structure includes a separation sleeve ring, the top and bottom of the separation sleeve ring are provided with threaded rods away from the side of the impeller, one end of the two threaded rods passes through the inside of the centrifugal pump body, and the ring frame is assembled together;

[0015] The side of the switching seat close to the impeller is provided with a plurality of limiting grooves, the separation sleeve ring is sleeved on the outside of the switching seat, and the water accumulation cavity is formed between the inner wall of the separation sleeve ring and the inside of the switching seat. The impeller driven by the centrifugal pump motor rotates in the inside of the centrifugal pump body, water is pumped from the water inlet pipe to the inside of the water outlet through the water inlet, and after the separation sleeve ring is sleeved on the outside of the impeller, the centrifugal pump motor controls the impeller to rotate in the opposite direction, the water accumulated in the inside of the centrifugal pump body is pumped out through the water accumulation cavity and the switching seat, and sprayed on the surface of the impeller.

[0016] In one possible implementation, a plurality of limiting grooves are equally spaced around the center of the switching seat, and a plurality of limiting grooves have different inclination degrees with reference to the water inlet axis.

[0017] In one possible implementation, an external ring is integrally formed at the edge of the side of the switching seat close to the impeller, the inner wall of the separation sleeve ring is fitted with the outer wall of the external ring, and the separation sleeve ring is slidingly connected on the outside of the external ring. After the side of the separation sleeve ring is fitted with the surface of the impeller, a separation is formed between the impeller and the water outlet.

[0018] In one possible implementation, the end of the water inlet pipe away from the centrifugal pump body is assembled with a blocking valve structure, the blocking valve structure includes a valve body, the inside of the valve body is provided with a valve plate sliding up and down, the top of the valve plate is assembled with a connecting rod at the center, the top of the connecting rod is assembled with a linkage plate, the linkage plate is assembled with an electric telescopic rod close to the top of the centrifugal pump body; the movable end of the electric telescopic rod passes through the inside of the linkage plate and is assembled with the top of the end of the water inlet pipe close to the valve body.

[0019] In a possible implementation, two exhaust ports are machined on the side surface of the valve plate close to the centrifugal pump body, and the two exhaust ports are symmetrically arranged on the two sides of the connecting rod; when the valve plate slides upward in the valve body to open the passage at the bottom of the valve body, the bottoms of the two exhaust ports are blocked by the inner wall of the valve body.

[0020] In a possible implementation, two movable notches are machined on the side surface of the ring frame close to the blocking valve structure, and the linkage plate is assembled with a driving arm on one side of the centrifugal pump body, and the bottoms of the two driving arms close to the side of the ring frame are machined with driving slopes.

[0021] In a possible implementation, the two movable notches are vertically symmetrical about the center of the ring frame, the driving arms are slidingly connected in the interiors of the movable notches, and the driving arms are in close contact with the inner walls of the bottoms of the movable notches through the driving slopes.

[0022] In a possible implementation, a limiting strip is machined on the surface of the driving slope at the bottom of the driving arm, a limiting groove is machined on the inner wall at the bottom of the movable notch, and the limiting strip is slidingly connected in the interior of the limiting groove.

[0023] In a possible implementation, when the electric telescopic rod is controlled to retract the active end into the fixed end, the valve plate moves to the bottom in the interior of the valve body, the bottom of the exhaust port is communicated with the interior of the water inlet pipe, the passage at the bottom of the valve body is blocked, and the rotation of the impeller in the forward direction is hindered.

[0024] The application has the following beneficial effects:

[0025] Firstly, in the scheme, the valve plate moves to the bottom in the interior of the valve body, the bottom of the exhaust port is communicated with the interior of the water inlet pipe, the passage at the bottom of the valve body is blocked, and the separation sleeve is sleeved to the side of the impeller close to the switching seat, so that the rotation of the impeller in the forward direction is hindered to continue pumping water. When the centrifugal pump motor drives the impeller to rotate in the reverse direction, the impeller discharges the gas in the interior of the centrifugal pump body from the interior of the exhaust port, the water accumulated in the interior of the water outlet is sprayed through the interior of the switching seat, and the surface of the impeller is washed, so that the effect of cleaning the attachments on the surface of the impeller can be achieved, without the need of using a matched cleaning system, avoiding the increase of comprehensive energy consumption, and finally achieving the effect of energy saving.

[0026] Secondly, in the scheme, the movable end of the electric telescopic rod is received in the fixed end, the distance between the linkage plate and the water inlet pipe is reduced, on the one hand, the valve plate moves to the bottom in the valve body, the bottom of the exhaust port is communicated with the inside of the water inlet pipe, and the passage at the bottom of the valve body is blocked, which hinders the continued water pumping when the impeller rotates forward, on the other hand, the two driving arms move to the bottom, the driving slope at the bottom of the driving arm cooperates with the inner wall of the movable slot, the ring frame moves along the axis of the water inlet pipe, the separation sleeve ring outside the switching seat is pushed to the side of the impeller close to the switching seat through the threaded rod, and the linkage synchronization effect of the passage blocking in the valve body and the plugging outside the impeller can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole structure schematic view of the energy-saving centrifugal pump cleaning mechanism.

[0028] Figure 2 It is a structure schematic view of the energy-saving centrifugal pump cleaning mechanism in a state that the centrifugal pump body and the adapter seat frame are disconnected.

[0029] Figure 3 It is a sectional view of the energy-saving centrifugal pump cleaning mechanism.

[0030] Figure 4 It is a sectional view of the energy-saving centrifugal pump cleaning mechanism.

[0031] Figure 5 It is a whole structure schematic view of the energy-saving centrifugal pump cleaning mechanism. Figure 4 It is an enlarged schematic view of part A.

[0032] Figure 6 It is an enlarged schematic view of part B. Figure 4 It is an enlarged schematic view of part B.

[0033] Figure 7 It is a structure schematic view of the energy-saving centrifugal pump cleaning mechanism in a state that the driving arm and the ring frame are disconnected.

[0034] Figure 8 It is a sectional view of the valve body of the energy-saving centrifugal pump cleaning mechanism.

[0035] REFERENCE SIGNS:

[0036] 1, blocking valve structure; 101, valve body; 102, valve plate; 103, connecting rod; 104, electric telescopic rod; 105, linkage plate;

[0037] 2, centrifugal pump body; 3, water outlet; 4, adapter seat frame; 5, centrifugal pump motor; 6, exhaust port;

[0038] 7. Switching structure; 701. Drive arm; 702. Ring frame; 703. External ring; 704. Limiting strip; 705. Separating collar; 706. Threaded rod;

[0039] 8. Impeller; 9. Limiting groove; 10. Water inlet; 11. Switching seat; 12. Water accumulation chamber; 13. Drive inclined surface; 14. Movable slot; 15. Water inlet pipe. Detailed Implementation

[0040] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0041] Example 1:

[0042] This embodiment describes the specific structure of an energy-saving centrifugal pump cleaning mechanism, as detailed in the following reference. Figures 1 to 5 , Figure 8 As shown, the centrifugal pump body 2, the switching seat 11, and the switching structure 7 installed from the outside of the centrifugal pump body 2 to the inside of the centrifugal pump body 2 are included. An inlet pipe 15 is welded to the outer wall of one side of the centrifugal pump body 2, and an outlet 3 is welded to the top of the inlet pipe 15. An impeller 8 is provided inside the centrifugal pump body 2 on the side of the switching seat 11 away from the inlet pipe 15. A transfer bracket 4 is assembled and connected to the side of the centrifugal pump body 2 away from the inlet pipe 15. A centrifugal pump motor 5 with one end connected to the impeller 8 is assembled and connected inside the transfer bracket 4.

[0043] like Figure 3 and Figure 4 As shown, the switching structure 7 includes a separating collar 705. Threaded rods 706 are provided on the top and bottom sides of the separating collar 705 away from the impeller 8. One end of each of the two threaded rods 706 passes through the interior of the centrifugal pump body 2 and is jointly assembled with a ring frame 702.

[0044] The switching seat 11 is assembled inside the centrifugal pump body 2 and has an inlet 10 machined inside. Multiple limiting grooves 9 are opened on the side of the switching seat 11 near the impeller 8. The separating sleeve 705 is sleeved on the outside of the switching seat 11, and a water accumulation cavity 12 is formed on the inner wall of the separating sleeve 705 and inside the switching seat 11. When the centrifugal pump motor 5 is started, the centrifugal pump motor 5 rotates, thereby driving the impeller 8 to rotate inside the centrifugal pump body 2. Water can be pumped from the inlet pipe 15 through the inlet 10 to the inside of the outlet 3 using the existing pumping action.

[0045] Meanwhile, when the threaded rod 706 is driven by the ring stand 702 to make the separation sleeve ring 705 inside the centrifugal pump body 2, the centrifugal pump motor 5 is in a reverse rotation state when the switching seat 11 is externally sleeved outside the impeller 8, so that the centrifugal pump motor 5 can control the impeller 8 to rotate in reverse, so that the inside of the centrifugal pump body 2 is discharged to the direction of the water inlet pipe 15 to achieve the effect of negative pressure, and the accumulated water in the centrifugal pump body 2 can be pumped out through the water accumulation cavity 12 and the switching seat 11 and sprayed on the surface of the impeller 8, realizing cleaning work and solving the problem of additional configuration of pump and other related components for cleaning related devices.

[0046] Secondly, by making a plurality of limiting grooves 9 equally spaced around the center of the switching seat 11, and the inclination of the plurality of limiting grooves 9 is different with the water inlet 10 axis as the reference, when the area inside the centrifugal pump body 2 near the impeller 8 is in a negative pressure state, the water accumulated inside the water outlet 3 can be washed by the plurality of switching seats 11 to the impeller 8 in a rotating state;

[0047] Furthermore, in order to facilitate the stable movement of the separation sleeve ring 705 outside the switching seat 11, as shown in Figure 3 The edge of the switching seat 11 near the impeller 8 is integrally formed with an external ring 703, and the inner wall of the separation sleeve ring 705 is attached to the outer wall of the external ring 703. When the separation sleeve ring 705 is slidably connected outside the external ring 703, one side of the separation sleeve ring 705 is attached to the surface of the impeller 8, a separation between the impeller 8 and the water outlet 3 is formed to ensure that when the impeller 8 rotates in reverse, the pumped air can only flow from the water accumulation cavity 12 to the inside of the switching seat 11, and the water accumulated in the water outlet 3 is sprayed from the inside of the switching seat 11;

[0048] In some examples, the water inlet pipe 15 is assembled and connected with the blocking valve structure 1 away from the centrifugal pump body 2, the blocking valve structure 1 includes a valve body 101, the inside of the valve body 101 is provided with a valve plate 102 sliding up and down, the top center of the valve plate 102 is assembled and connected with a connecting rod 103, the top of the connecting rod 103 is assembled and connected with a linkage plate 105, and the linkage plate 105 is assembled and connected with an electric telescopic rod 104 near the top of the centrifugal pump body 2;

[0049] The movable end of the electric telescopic rod 104 passes through the inside of the linkage plate 105 and is assembled and fixed to the top of the end of the water inlet pipe 15 near the valve body 101. When the movable end of the electric telescopic rod 104 extends from the inside of the fixed end, it is supported on the surface of the water inlet pipe 15 by the movable end, drives the linkage plate 105, the connecting rod 103 and the valve plate 102 to move to the top, and opens the passage at the bottom of the valve body 101;

[0050] Secondly, in order to facilitate the impeller 8 reverse rotation, the internal gas can be discharged to the outside, to ensure that the area around the impeller 8 is in a negative pressure state, while avoiding the impeller 8 through the centrifugal pump body 2 during the process of pumping water, water from the inside of the exhaust port 6 out, such as Figure 2 and Figure 4 As shown, the valve plate 102 is close to the centrifugal pump body 2 of the side surface processing with two exhaust port 6, two exhaust port 6 symmetrical setting in the connecting rod 103 both sides, by making the valve plate 102 in the valve body 101 inside up sliding, will open the channel at the bottom of the valve body 101, can make two exhaust port 6 bottom by the inner wall of the valve body 101 block, to ensure the normal operation of pumping water;

[0051] At the same time, by electric telescopic rod 104 in the control of the inside of the fixed end of the movable end, the valve plate 102 in the valve body 101 to the bottom movement, make the bottom of the exhaust port 6 and the inside of the water inlet pipe 15 connected, and will cut off the channel at the bottom of the valve body 101, hinder the impeller 8 forward rotation pumping, facilitate the impeller 8 reverse rotation, the centrifugal pump body 2 inside the air or water (first air and then water) discharge.

[0052] Example 2:

[0053] Based on example 1, this embodiment introduces the switching structure 7 and the linkage part of the blocking valve structure 1, as shown in Figure 4 , Figure 6 and Figure 7 As shown, the ring frame 702 is close to the blocking valve structure 1 of the side surface processing with two movable notch 14, the linkage plate 105 is close to the centrifugal pump body 2 of the side of the assembly type connection with the driving arm 701, two driving arm 701 close to the ring frame 702 side of the bottom are processed with driving slope 13;

[0054] Among them, two driving arm 701 are located in the two sides of the water inlet pipe 15, two movable notch 14 in the vertical direction about the center of the ring frame 702 symmetry, when the driving arm 701 sliding type connection in the inside of the movable notch 14, by virtue of the driving arm 701 through the driving slope 13 and the characteristics of the movable notch 14 bottom inner wall of the paste, can be in the process of driving arm 701 to the bottom movement, by virtue of the slope of the paste, make the ring frame 702 along the axis direction of the water inlet pipe 15 movement, facilitate through the threaded rod 706 to push the separation sleeve ring 705 outside the switching seat 11 sleeve joint to the side of the impeller 8 close to the switching seat 11, and does not affect the centrifugal pump motor 5 drive impeller 8 in the inside of the centrifugal pump body 2 rotation;

[0055] Secondly, in order to facilitate the driving arm 701 to the top movement process, can drive the ring frame 702 along the axis direction of the water inlet pipe 15 reset, make the separation sleeve ring 705 outside the switching seat 11 reset, as shown in Figure 6 and Figure 7As shown, the limit strip 704 is processed at the surface of the driving slope 13 at the bottom of the driving arm 701, and the limit groove 9 is processed at the inner wall of the movable notch 14 at the bottom, the limit strip 704 is slidably connected inside the limit groove 9, when the driving arm 701 moves towards the top, the limit strip 704 and the limit groove 9 can be matched to reversely pull the threaded rod 706, so that the separation sleeve ring 705 is separated from the outside of the impeller 8 and reset to the outside of the switching seat 11.

[0056] Specifically, when the energy-saving centrifugal pump cleaning mechanism is used to clean the impeller 8 inside the water outlet 3:

[0057] When it is determined that the surface of the impeller 8 needs to be cleaned, the electric telescopic rod 104 is first closed, so that the movable end of the electric telescopic rod 104 is retracted inside the fixed end, the distance between the linkage plate 105 and the water inlet pipe 15 is reduced (the linkage plate 105 is close to the water inlet pipe 15 in the vertical direction), the valve plate 102 is moved towards the bottom inside the valve body 101, the bottom of the exhaust port 6 is connected with the inside of the water inlet pipe 15 (the electric telescopic rod 104 is in the starting state, the exhaust port 6 is closed by the inner wall of the valve body 101, and the valve plate 102 opens the inside of the valve body 101, so that the electric telescopic rod 104 does not need to continuously consume electric energy), and the passage at the bottom of the valve body 101 is blocked, preventing the impeller 8 from continuing to pump water when it rotates in the forward direction (the water inside the centrifugal pump body 2 has been pumped into the inside of the water outlet 3, and will continue to be discharged until the separation sleeve ring 705 is sleeved on the outside of the impeller 8);

[0058] In this state, the linkage plate 105 moving towards the bottom drives the two driving arms 701 to move towards the bottom, and the cooperation of the driving slope 13 at one side of the bottom of the driving arm 701 and the inner wall at the bottom of the movable notch 14 enables the ring frame 702 to move along the axis direction of the water inlet pipe 15, so as to facilitate the threaded rod 706 to push the separation sleeve ring 705 outside the switching seat 11 to be sleeved on one side of the impeller 8 close to the switching seat 11;

[0059] The centrifugal pump motor 5 is switched to the reverse rotation state, so as to drive the impeller 8 to rotate reversely inside the centrifugal pump body 2. In the process of discharging the gas inside the centrifugal pump body 2 from the inside of the exhaust port 6, the area close to the impeller 8 inside the centrifugal pump body 2 is in a negative pressure state, so as to facilitate the water accumulated inside the water outlet 3 to enter the water storage cavity 12 which is not blocked by the separation sleeve ring 705, and when the water flows out through the switching seat 11, it is sprayed to the surface of the impeller 8, which can achieve the effect of cleaning the attachments on the surface of the impeller 8. Since the plurality of switching seats 11 are at different cleaning angles, the impeller 8 in the rotating state can be cleaned in a large area, and the water continuously entering the inside of the separation sleeve ring 705 can assist in cleaning the loose attachments on the surface of the impeller 8, which is beneficial to avoid the use of the attached cleaning structure to cause the increase of the comprehensive energy consumption of water and electric energy;

[0060] Meanwhile, when the impeller 8 resumes the water pumping operation inside the centrifugal pump body 2, the detached attachments can be discharged from the inside to the outside of the water outlet 3.

[0061] It is worth noting that in the process of driving the arm 701 to move to the top, the limiting strip 704 and the limiting groove 9 can be matched to pull the threaded rod 706 in the opposite direction, so that the separation sleeve ring 705 is separated from the outside of the impeller 8 and reset to the outside of the switching seat 11, facilitating the switching of the separation sleeve ring 705 between the outside of the switching seat 11 and the impeller 8.

[0062] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the present application, and are not limitations on the embodiments. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An energy-saving centrifugal pump cleaning mechanism, characterized in that, include: Centrifugal pump body (2); The switching seat (11) is assembled inside the centrifugal pump body (2) and has an inlet (10) machined inside; The switching structure (7) is installed from the outside of the centrifugal pump body (2) to the inside of the centrifugal pump body (2); A water inlet pipe (15) is welded to the outer wall of one side of the centrifugal pump body (2), and a water outlet (3) is welded to the top of the water inlet pipe (15). An impeller (8) is provided inside the centrifugal pump body (2) on the side away from the water inlet pipe (15) of the switching seat (11). A transfer bracket (4) is assembled and connected to the side of the centrifugal pump body (2) away from the water inlet pipe (15). A centrifugal pump motor (5) with one end connected to the impeller (8) is assembled and connected inside the transfer bracket (4). The switching structure (7) includes a separating collar (705), and threaded rods (706) are provided on the top and bottom sides away from the impeller (8). One end of each of the two threaded rods (706) passes through the interior of the centrifugal pump body (2) and is jointly assembled with a ring frame (702). The switching seat (11) has multiple limiting grooves (9) on the side near the impeller (8). The separating ring (705) is sleeved on the outside of the switching seat (11), and a water accumulation chamber (12) is formed on the inner wall of the separating ring (705) and inside the switching seat (11). The impeller (8), driven by the centrifugal pump motor (5), rotates inside the centrifugal pump body (2), pumping water from the inlet pipe (15) through the inlet (10) to the inside of the outlet (3). After the separating ring (705) is sleeved on the outside of the impeller (8), the centrifugal pump motor (5) controls the impeller (8) to rotate in the opposite direction, pumping the water inside the centrifugal pump body (2) through the water accumulation chamber (12) and the switching seat (11), and spraying it onto the surface of the impeller (8).

2. The energy-saving centrifugal pump cleaning mechanism as described in claim 1, characterized in that: Multiple limiting grooves (9) are equally spaced around the center of the switching seat (11), and the multiple limiting grooves (9) have different degrees of inclination with reference to the axis of the water inlet (10).

3. The energy-saving centrifugal pump cleaning mechanism as described in claim 1, characterized in that: The switching seat (11) has an outer ring (703) integrally formed on the edge near the impeller (8). The inner wall of the separating sleeve (705) is in contact with the outer wall of the outer ring (703). The separating sleeve (705) is slidably connected to the outside of the outer ring (703). After the separating sleeve (705) is in contact with the surface of the impeller (8) on one side, a separation is formed between the impeller (8) and the outlet (3).

4. The energy-saving centrifugal pump cleaning mechanism as described in claim 1, characterized in that: The end of the water inlet pipe (15) away from the centrifugal pump body (2) is equipped with a shut-off valve structure (1). The shut-off valve structure (1) includes a valve body (101). The valve body (101) is provided with a valve plate (102) that slides up and down inside. A connecting rod (103) is assembled and connected at the center of the top of the valve plate (102). A linkage plate (105) is assembled and connected at the top of the connecting rod (103). An electric telescopic rod (104) is assembled and connected at the top of the linkage plate (105) near the centrifugal pump body (2). The movable end of the electric telescopic rod (104) passes through the interior of the linkage plate (105) and is assembled and fixed to the top of the water inlet pipe (15) near the valve body (101).

5. The energy-saving centrifugal pump cleaning mechanism as described in claim 4, characterized in that: The valve plate (102) has two exhaust ports (6) machined on the side surface near the centrifugal pump body (2), and the two exhaust ports (6) are symmetrically arranged on both sides of the connecting rod (103); When the valve plate (102) slides upward inside the valve body (101) and opens the channel at the bottom of the valve body (101), the bottom of the two exhaust ports (6) is blocked by the inner wall of the valve body (101).

6. The energy-saving centrifugal pump cleaning mechanism as described in claim 5, characterized in that: Two movable slots (14) are machined on the side surface of the ring frame (702) near the blocking valve structure (1). The linkage plate (105) is assembled with a drive arm (701) on the side near the centrifugal pump body (2). The bottom of the two drive arms (701) near the ring frame (702) is machined with a drive slope (13). The two drive arms (701) are located on both sides of the water inlet pipe (15).

7. The energy-saving centrifugal pump cleaning mechanism as described in claim 6, characterized in that: The two movable slots (14) are symmetrical about the center of the ring frame (702) in the vertical direction. The drive arm (701) is slidably connected inside the movable slot (14). The drive arm (701) is in contact with the bottom inner wall of the movable slot (14) through the drive inclined surface (13).

8. The energy-saving centrifugal pump cleaning mechanism as described in claim 6, characterized in that: A limiting strip (704) is machined on the surface of the driving inclined surface (13) at the bottom of the driving arm (701), and a limiting groove (9) is machined on the inner wall at the bottom of the movable slot (14). The limiting strip (704) is slidably connected to the inside of the limiting groove (9).

9. The energy-saving centrifugal pump cleaning mechanism as described in claim 4, characterized in that: When the electric telescopic rod (104) is retracted into the fixed end, the valve plate (102) moves to the bottom inside the valve body (101), so that the bottom of the exhaust port (6) is connected to the inside of the water inlet pipe (15), and the channel at the bottom of the valve body (101) is blocked, preventing the impeller (8) from rotating in the forward direction to pump water.

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