A self-cleaning chemical centrifugal pump

Abstract

The present invention relates to the technical field of chemical centrifugal pumps, and discloses a self-cleaning chemical centrifugal pump, comprising a mounting base, the top of the mounting base is fixedly connected with a driving motor and a centrifugal pump casing, the output end of the driving motor is fixedly connected with a driving shaft through a coupling, and the self-cleaning chemical centrifugal pump effectively filters impurities in materials through the provision of a first filter screen plate, ensuring that the materials entering the interior of the centrifugal pump are purer, thereby reducing the risk of pump body wear and blockage caused by impurities, and in addition, a transmission pipe and a first filter screen plate are driven to rotate by a transmission mechanism, and the flow direction of the material is changed by rotation, and then the impurities accumulated on the first filter screen plate are promptly removed through the synergistic effect of the flow force of the material and the filtering and cleaning mechanism, thereby avoiding blockage of the filter screen plate and ensuring continuous filtering efficiency and long-term stable operation of the centrifugal pump.

Description

Technical Field

[0001] The invention relates to the technical field of chemical centrifugal pumps, and in particular to a self-cleaning chemical centrifugal pump. Background Art

[0002] The chemical centrifugal pump is one of the mechanical equipment for chemical liquid transportation. Among them, the common chemical centrifugal pump is mainly composed of a pump body shell, an input pipeline, an output pipeline, a liquid conveying device, a power supply device and a control system. The specific working process of the chemical centrifugal pump is as follows: when operating, the chemical liquid external pipeline is connected to the output pipeline and the input pipeline. When the chemical liquid is transported, the liquid conveying device is driven to start power-on operation under the action of the power supply device and the control system, thereby driving the chemical liquid to carry out the transportation operation.

[0003] At present, chemical centrifugal pumps are mainly used for chemical liquid transportation through the action of the impeller inside the liquid transportation device. There are a certain amount of impurities in common chemical liquids, which causes damage to the impeller in working state. Therefore, in order to avoid this situation, the input pipeline of the chemical centrifugal pump is provided with a filtering device for impurity removal. The impurities after impurity removal are attached to the surface of the filtering device, and the impurities on the surface cannot be self-cleaned. After working for a period of time, the impurities need to be manually disassembled and cleaned, which makes it inconvenient for users to use. At the same time, the centrifugal pump cannot work continuously, reducing the working efficiency of the centrifugal pump. At the same time, when the chemical centrifugal pump is working, part of the chemical substances will adhere to the surface of the centrifugal pump impeller and the inner surface of the centrifugal pump casing. After long-term use, the surface of the centrifugal pump impeller and the inner surface of the centrifugal pump casing will be scaled. These scales will reduce the stability and working efficiency of the centrifugal pump. The staff is required to dismantle and clean the centrifugal pump casing, which makes the user's use process more cumbersome and reduces the working efficiency of the centrifugal pump. Summary of the invention

[0004] The purpose of the present invention is to provide a self-cleaning chemical centrifugal pump to solve the deficiencies in the above-mentioned background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A self-cleaning chemical centrifugal pump, comprising a mounting base,

[0007] A centrifugal pump housing and a mounting housing mounted on one side of the centrifugal pump housing;

[0008] A transmission pipe, the transmission pipe being rotatably mounted on the mounting housing;

[0009] A first filter screen plate, the first filter screen plate is fixedly mounted on the transmission pipe and is slidably connected to the mounting housing;

[0010] A filter cleaning mechanism, which is arranged on the mounting housing and performs self-cleaning on impurities filtered by the first filter screen;

[0011] A centrifugal pump impeller cleaning mechanism, wherein the centrifugal pump impeller cleaning mechanism is arranged on the transmission pipe and is used to clean the surface of the centrifugal pump impeller;

[0012] The centrifugal pump impeller cleaning mechanism comprises a cleaning pipe fixed on a transmission pipe and a plurality of cleaning nozzles installed on the cleaning pipe. The transmission pipe drives the cleaning pipe and the cleaning nozzles to rotate back and forth to wash away scale on one side of the rotating centrifugal pump impeller.

[0013] As a further solution of the present invention: the filtering and cleaning mechanism includes two material receiving frames fixedly connected to the mounting shell, one side of the material receiving frame is fixedly connected to a first discharge pipe, the first discharge pipe is provided with an electromagnetic valve, one end of the first discharge pipe is fixedly connected to a filter box, a second filter mesh plate is fixedly connected in the filter box, one side of the filter box is fixedly connected to a second discharge pipe fixedly connected to the mounting shell, the outer surface of the filter box is fixedly connected to a third discharge pipe, the third discharge pipe is provided with an electromagnetic valve, and a scraping mechanism connected to the filter box is slidably connected to the second filter mesh plate for scraping the filter material on the second filter mesh plate.

[0014] As a further solution of the present invention: the scraper mechanism includes a first transmission shaft rotatably connected to the filter box, the first transmission shaft is rotatably connected to the second filter screen, the outer surface of the first transmission shaft is fixedly connected to a first cleaning brush slidably connected to the second filter screen, and one end of the first transmission shaft is fixedly sleeved with a fan blade.

[0015] As a further solution of the present invention: the outer surface of the transmission pipe is transmission-connected with a transmission mechanism connected to the centrifugal pump housing;

[0016] The transmission mechanism includes a transmission motor fixedly connected to the mounting shell, the output end of the transmission motor is fixedly connected to the second transmission shaft through a coupling, the outer surface of the second transmission shaft is fixedly sleeved with a first gear, and the outer surface of the first gear is meshingly connected with a second gear fixedly sleeved with the transmission pipe.

[0017] As a further solution of the present invention: one end of the transmission pipe is rotatably connected to a first connecting pipe fixedly connected to the installation shell, one end of the first connecting pipe is fixedly connected to an inlet pipe fixedly connected to the water outlet end of the centrifugal pump shell, an electromagnetic valve is arranged on the water inlet pipe, and an electromagnetic valve is arranged at the output end of the centrifugal pump shell.

[0018] As a further solution of the present invention: the other end of the transmission pipe is rotatably connected to a second connecting pipe fixedly connected to the mounting shell, and one end of the second connecting pipe is fixedly connected to a pump body fixedly connected to the mounting shell through a pipeline.

[0019] As a further solution of the present invention: it also includes a self-cleaning mechanism;

[0020] The self-cleaning mechanism includes a transmission box fixedly connected to the centrifugal pump casing, a mounting plate fixedly connected inside the transmission box, a transmission rod slidably connected to the mounting plate, one end of the transmission rod is fixedly connected to a connecting plate, one end of the connecting plate is fixedly connected to an electromagnet plate, one side of the electromagnet plate is slidably connected to a permanent magnet plate, the permanent magnet plate is slidably connected to the transmission box, both sides of the permanent magnet plate are fixedly connected to a second cleaning brush, and one end of the transmission rod is fixedly connected to an electric telescopic rod fixedly connected to the transmission box through a connecting rod.

[0021] As a further solution of the present invention: one side of the installation shell is fixedly connected to a mounting pipe, and one end of the installation pipe is fixedly connected to a connecting flange.

[0022] As a further solution of the present invention: a driving motor and a centrifugal pump casing are fixedly connected to the top of the mounting base, an output end of the driving motor is fixedly connected to a driving shaft via a coupling, the driving shaft is rotatably connected to the centrifugal pump casing, and one end of the driving shaft is fixedly connected to a centrifugal pump impeller.

[0023] As a further solution of the present invention: the rotation angle of the first filter screen is - degrees.

[0024] Beneficial effects of the present invention:

[0025] (1) By setting the first filter screen, impurities in the material are effectively filtered, ensuring that the material entering the centrifugal pump is purer, thereby reducing the risk of pump body wear and blockage caused by impurities. In addition, the transmission pipe and the first filter screen are driven to rotate by the transmission mechanism to change the flow direction of the material. Subsequently, the impurities accumulated on the first filter screen are removed in time through the synergistic effect of the flow force of the material and the filtering and cleaning mechanism, thereby avoiding blockage of the filter screen and ensuring continuous filtration efficiency and long-term stable operation of the centrifugal pump.

[0026] (2) The filtered material is introduced into the transmission pipe, cleaning pipe and cleaning nozzle through the water inlet pipe, and then the front of the centrifugal pump impeller is flushed through the cleaning nozzle. At the same time, the transmission pipe, cleaning pipe and cleaning nozzle are driven to rotate back and forth through the transmission mechanism, and the centrifugal pump impeller rotates at the same time, thereby achieving a comprehensive flushing and cleaning of the scale on one side of the centrifugal pump impeller. At the same time, when chemical scale requires chemical reaction to be cleaned, at this time, the chemical agent is pumped into the transmission pipe through the pump body to flush the impeller, thereby achieving a comprehensive self-cleaning of the scale on the front of the impeller.

[0027] (3) The electric telescopic rod drives the transmission rod to move, the transmission rod drives the connecting plate and the electromagnet plate to move, the electromagnet plate drives the second cleaning brush to clean the side of the centrifugal pump impeller, and at the same time, the permanent magnet plate is adsorbed on the surface of the centrifugal pump impeller, and then the centrifugal pump impeller drives the permanent magnet plate and the second cleaning brush to rotate, so as to comprehensively clean the inner surface of the centrifugal pump casing and the side scale of the centrifugal pump impeller, thereby reducing the influence of scale on the centrifugal pump and improving the working stability of the centrifugal pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a first stereogram of the external structure of the present invention;

[0030] Figure 2 is a second stereoscopic diagram of the external structure of the present invention;

[0031] Figure 3 is a third stereogram of the external structure of the present invention;

[0032] Figure 4 It is a three-dimensional diagram of the internal structure of the present invention;

[0033] Figure 5 This is a front view of the internal structure of the filter box of the present invention;

[0034] Figure 6 is a side view of the internal structure of the present invention;

[0035] Figure 7 The present invention Figure 1 A magnified view of middle;

[0036] Figure 8 The present invention Figure 2 Enlarged view of middle B;

[0037] Fig. 9 The present invention Figure 3 Enlarged view of middle C;

[0038] Fig.10 The present invention Figure 6 Enlarged view of middle D;

[0039] Fig.11 The present invention Figure 4 Enlarged view of E.

[0040] In the figure: 1, mounting base; 2, driving motor; 3, centrifugal pump housing; 4, driving shaft; 5, mounting housing; 6, transmission pipe; 7, first filter screen; 8, centrifugal pump impeller; 11, receiving frame; 12, first discharge pipe; 13, filter box; 14, second filter screen; 15, second discharge pipe; 16, third discharge pipe; 21, first transmission shaft; 22, first cleaning brush; 23, fan blade; 31, transmission motor; 32, second transmission shaft; 33, first gear; 34, second gear; 41, cleaning pipe; 42, cleaning nozzle; 43, first connecting pipe; 44, water inlet pipe; 51, second connecting pipe; 52, pump body; 61, transmission box; 62, mounting plate; 63, transmission rod; 64, connecting plate; 65, electromagnet plate; 66, permanent magnet plate; 67, second cleaning brush; 68, electric telescopic rod; 71, mounting pipe; 72, connecting flange. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1

[0043] See also Figure 1-Figure 11 As shown, the present invention is a self-cleaning chemical centrifugal pump, comprising a mounting base 1, a driving motor 2 and a centrifugal pump housing 3 are fixedly connected to the top of the mounting base 1, the driving motor 2 is controlled by a PLC programming program, and the driving motor 2 can be controlled to rotate forward and reverse and rotate at an angle, the output end of the driving motor 2 is fixedly connected to a driving shaft 4 through a coupling, the driving shaft 4 is rotatably connected to the centrifugal pump housing 3, one end of the driving shaft 4 is fixedly connected to a centrifugal pump impeller 8, one side of the centrifugal pump housing 3 is fixedly connected to a mounting housing 5, a transmission pipe 6 is rotatably connected to the mounting housing 5, and a first filter screen plate 7 slidably connected to the mounting housing 5 is fixedly connected to the outer surface of the transmission pipe 6;

[0044] The outer surface of the transmission pipe 6 is connected to a transmission mechanism connected to the centrifugal pump casing 3, and the transmission mechanism is used to drive the transmission pipe 6 to rotate. A filtering and cleaning mechanism is provided on the mounting casing 5, and the filtering and cleaning mechanism is used to self-clean the impurities cleaned by the first filter plate 7. A centrifugal pump impeller cleaning mechanism connected to the centrifugal pump casing 3 is provided on the transmission pipe 6, and the centrifugal pump impeller cleaning mechanism is used to clean the centrifugal pump impeller 8. A self-cleaning mechanism is provided on the centrifugal pump casing 3, and the self-cleaning mechanism is used to self-clean the inner surface of the centrifugal pump casing 3 and the side of the centrifugal pump impeller 8.

[0045] The transmission mechanism includes a transmission motor 31 fixedly connected to the mounting shell 5. The transmission motor 31 is controlled by a PLC programming program, and the transmission motor 31 can be controlled to rotate forward and reverse and rotate at an angle. The output end of the transmission motor 31 is fixedly connected to a second transmission shaft 32 through a coupling. The outer surface of the second transmission shaft 32 is fixedly sleeved with a first gear 33, and the outer surface of the first gear 33 is meshingly connected with a second gear 34 fixedly sleeved with the transmission tube 6.

[0046] The second transmission shaft 32 is driven to rotate by the transmission motor 31 , and the second transmission shaft 32 drives the transmission tube 6 to rotate through the first gear 33 and the second gear 34 .

[0047] The driving motor 2 drives the driving shaft 4 and the centrifugal pump impeller 8 to rotate, and the centrifugal pump impeller 8 rotates in the centrifugal pump housing 3 to suck the material. At this time, the material is first filtered through the first filter screen plate 7 installed in the housing 5 to filter out the impurities in the material, so as to filter out the impurities in the material. After filtering for a period of time, when there are many impurities on the first filter screen plate 7, the first filter screen plate 7 is blocked, resulting in a decrease in the material feed amount, affecting the working efficiency of the centrifugal pump. At this time, the transmission pipe 6 is driven to rotate through the transmission mechanism, and the transmission pipe 6 drives the first filter screen plate 7 to rotate, driving the first filter screen plate 7 to rotate 45 degrees. At this time, the inclination of the first filter screen plate 7 causes the material flow direction to change, and the filtering and cleaning mechanism is opened at the same time. At this time, the impurities filtered on the first filter screen plate 7 are Under the action of material flow force, the impurities on the first filter screen plate 7 are pushed into the filtering and cleaning mechanism, and then the filtering and cleaning mechanism cleans the impurities, thereby realizing self-cleaning of the filtered impurities, ensuring the normal filtering flow of the first filter screen plate 7, and improving the stability of the centrifugal pump. At the same time, after the chemical centrifugal pump has been working for a period of time, scale will form in the centrifugal pump impeller 8 and the centrifugal pump casing 3. At this time, the accumulated large amount of chemical scale will affect the normal operation of the centrifugal pump. At this time, the front of the centrifugal pump impeller 8 is flushed and cleaned by the centrifugal pump impeller 8 cleaning mechanism, and the side of the centrifugal pump impeller 8 and the inner surface of the centrifugal pump casing 3 are self-cleaned by the self-cleaning mechanism, thereby realizing self-cleaning of the chemical centrifugal pump, greatly improving the working stability of the centrifugal pump, and also facilitating the use of users.

[0048] Embodiment 2

[0049] Based on Example 1, please refer to Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, the filtering and cleaning mechanism includes two material receiving frames 11 fixedly connected to the mounting shell 5, one side of the material receiving frame 11 is fixedly connected to a first discharge pipe 12, the first discharge pipe 12 is provided with an electromagnetic valve, one end of the first discharge pipe 12 is fixedly connected to a filter box 13, a second filter screen plate 14 is fixedly connected inside the filter box 13, one side of the filter box 13 is fixedly connected to a second discharge pipe 15 fixedly connected to the mounting shell 5, the outer surface of the filter box 13 is fixedly connected to a third discharge pipe 16, the third discharge pipe 16 is provided with an electromagnetic valve, and a scraping mechanism connected to the filter box 13 is slidably connected to the second filter screen plate 14.

[0050] The scraper mechanism includes a first transmission shaft 21 rotatably connected to the filter box 13, the first transmission shaft 21 is rotatably connected to the second filter screen plate 14, the outer surface of the first transmission shaft 21 is fixedly connected to a first cleaning brush 22 slidably connected to the second filter screen plate 14, and one end of the first transmission shaft 21 is fixedly sleeved with a fan blade 23.

[0051] When the first filter screen plate 7 needs to be cleaned, the transmission pipe 6 is first driven by the transmission mechanism to rotate downward 45 degrees, and then the electromagnetic valve on the first discharge pipe 12 at the lower part of the installation shell 5 is opened. At this time, since the first filter screen plate 7 rotates 45 degrees, the reverse direction of the material flow is changed. At this time, a part of the material flows obliquely downward and begins to push the impurities filtered on the first filter screen plate 7 to flow. At this time, the impurities enter the first discharge pipe 12 through the material receiving frame 11, and then enter the filter box 13 through the first discharge pipe 12, and then pass through the second filter screen plate 14 in the filter box 13 for filtering. The filtered material flows into the output end of the installation shell 5 through the second discharge pipe 15. After cleaning for a period of time, the electromagnetic valve on the third discharge pipe 16 is opened, and the material entering at the same time pushes the fan blades 2 on the first transmission shaft 21. 3 is rotated, the fan blade 23 drives the first transmission shaft 21 to rotate, the first transmission shaft 21 drives the first cleaning brush 22 to rotate, the first cleaning brush 22 cleans the second filter screen plate 14, scrapes off the impurities filtered by the second filter screen plate 14, and then discharges them through the third discharge pipe 16, then closes the electromagnetic valves on the first discharge pipe 12 and the third discharge pipe 16, then drives the transmission pipe 6 and the first filter screen plate 7 to rotate downward 45 degrees through the transmission mechanism, then opens the electromagnetic valve on the first discharge pipe 12 on the upper part of the mounting shell 5, repeats the above actions to self-clean the impurities filtered by the first filter screen plate 7 again, thereby filtering the materials entering the centrifugal pump, and at the same time, the filtered impurities are self-cleaned without stopping the centrifugal pump, which greatly improves the working stability of the centrifugal pump.

[0052] Embodiment 3

[0053] Based on Example 1, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 8 , Fig. 9 and Fig.11 As shown, the centrifugal pump impeller cleaning mechanism includes a cleaning pipe 41 fixedly connected to the transmission pipe 6, a plurality of cleaning nozzles 42 are fixedly connected to the outer surface of the cleaning pipe 41, one end of the transmission pipe 6 is rotatably connected to a first connecting pipe 43 fixedly connected to the mounting shell 5, one end of the first connecting pipe 43 is fixedly connected to a water inlet pipe 44 fixedly connected to the water outlet end of the centrifugal pump shell 3, an electromagnetic valve is arranged on the water inlet pipe 44, and an electromagnetic valve is arranged at the output end of the centrifugal pump shell 3.

[0054] The other end of the transmission pipe 6 is rotatably connected to a second connecting pipe 51 fixedly connected to the mounting housing 5 , and one end of the second connecting pipe 51 is fixedly connected to a pump body 52 fixedly connected to the mounting housing 5 via a pipeline.

[0055] After the centrifugal pump has been working for a period of time, scale is formed on the front side of the centrifugal pump impeller 8. At this time, the electromagnetic valve on the water inlet pipe 44 is opened, and then the output end of the centrifugal pump housing 3 supplies liquid to the first connecting pipe 43 and the transmission pipe 6 through the water inlet pipe 44. Then the liquid is sprayed out with high-pressure liquid through the cleaning pipe 41 and the cleaning nozzle 42. Then the liquid impacts the surface of the centrifugal pump impeller 8, so that the scale on the surface is flushed out. At the same time, the transmission pipe 6 is driven to reciprocate through the transmission mechanism. The transmission pipe 6 drives the cleaning pipe 41 and the cleaning nozzle 42 to reciprocate, and the centrifugal pump impeller 8 rotates at the same time, so as to achieve comprehensive flushing and cleaning of the scale on one side of the centrifugal pump impeller 8. At the same time, when some scales that are difficult to clean require other chemical agents for cleaning, the centrifugal pump no longer inhales materials, and the centrifugal pump impeller 8 is driven to run idle. Then, the chemical agents are introduced into the second connecting pipe 51 and the transmission pipe 6 through the pump body 52 and the pipeline. Then, the transmission pipe 6 flushes and cleans the surface of the centrifugal pump impeller 8 with the chemical agents through the cleaning pipe 41 and the cleaning nozzle 42, thereby achieving comprehensive self-cleaning of the centrifugal pump impeller 8.

[0056] Embodiment 4

[0057] Based on Example 1, please refer to Figure 4 , Figure 6 and Fig.10 As shown, the self-cleaning mechanism includes a transmission box 61 fixedly connected to the centrifugal pump housing 3, a mounting plate 62 fixedly connected inside the transmission box 61, a transmission rod 63 slidably connected to the mounting plate 62, one end of the transmission rod 63 is fixedly connected to a connecting plate 64, one end of the connecting plate 64 is fixedly connected to an electromagnet plate 65, one side of the electromagnet plate 65 is slidably connected to a permanent magnet plate 66 slidably connected to the transmission box 61, both sides of the permanent magnet plate 66 are fixedly connected to a second cleaning brush 67, and one end of the transmission rod 63 is fixedly connected to an electric telescopic rod 68 fixedly connected to the transmission box 61 through a connecting rod.

[0058] When the side of the centrifugal pump impeller 8 is cleaned, the connecting rod and the transmission rod 63 are driven to move by the electric telescopic rod 68, and the transmission rod 63 drives the connecting plate 64 to move. At this time, the electromagnet plate 65 is energized to adsorb the permanent magnet plate 66, and then the connecting plate 64 drives the permanent magnet plate 66 to move, and the permanent magnet plate 66 drives the second cleaning brush 67 to move, so that the second cleaning brush 67 contacts with the centrifugal pump impeller 8. At the same time, the centrifugal pump impeller 8 rotates. At this time, the second cleaning brush 67 brushes and cleans the side of the centrifugal pump impeller 8 to clean the dirt on the side of the centrifugal pump impeller 8. When the cleaning is completed, the driving motor 2 stops rotating, and then the permanent magnet plate 66 is driven to move by the electric telescopic rod 68, so that the permanent magnet plate 66 contacts with the centrifugal pump impeller 8. At this time, the electromagnet plate 65 is powered off and no longer adsorbs the permanent magnet plate 66. Since the centrifugal pump impeller 8 is cast iron, it is adsorbed on the centrifugal pump impeller 8 through the permanent magnet plate 66. Then the electric telescopic rod The electromagnetic plate 65 is driven to move into the transmission box 61, and then the centrifugal pump impeller 8 is driven to rotate, and the centrifugal pump impeller 8 drives the permanent magnet plate 66 to rotate. The second cleaning brush 67 on the permanent magnet plate 66 cleans the inner surface of the centrifugal pump casing 3, thereby achieving a comprehensive cleaning of the scale on the inner surface of the centrifugal pump casing 3. When the cleaning is completed, the drive shaft 4 and the centrifugal pump impeller 8 are driven to rotate by the driving motor 2. Since the driving motor 2 is controlled by the PLC programming program, the rotation angle of the driving motor 2 can be controlled, so that it drives the permanent magnet plate 66 to rotate to the transmission box 61 position, and then the transmission rod 63 and the connecting plate 64 are driven to move by the electric telescopic rod 68, and the connecting plate 64 drives the electromagnetic plate 65 to move. At the same time, the electromagnetic plate 65 is energized to adsorb and fix the permanent magnet plate 66, and then the electric telescopic rod 68 is contracted to pull the permanent magnet plate 66 out of the centrifugal pump impeller 8, so that it enters the transmission box 61, which is convenient for the subsequent stable operation of the centrifugal pump.

[0059] One side of the mounting shell 5 is fixedly connected to a mounting pipe 71 , and one end of the mounting pipe 71 is fixedly connected to a connecting flange 72 .

[0060] The installation pipe 71 and the connecting flange 72 facilitate the connection of the suction pipe.

[0061] The working principle of the present invention is as follows: impurities in the material are filtered through the first filter screen plate 7. At the same time, when the first filter screen plate 7 is blocked, the transmission mechanism drives the transmission pipe 6 and the first filter screen plate 7 to rotate, and at the same time cooperates with the filter box and the second filter screen plate 14 to self-clean the first filter screen plate 7, thereby filtering the material entering the centrifugal pump. At the same time, the filtered impurities are self-cleaned without stopping the centrifugal pump, which greatly improves the working stability of the centrifugal pump.

[0062] Liquid is supplied to the transmission pipe 6 through the water inlet pipe, and then the transmission pipe 6 flushes the centrifugal pump impeller through the cleaning pipe 41 and the cleaning nozzle 42, and the chemical agent is introduced into the second connecting pipe 51 and the transmission pipe 6 through the pump body 52 and the pipeline, and then the transmission pipe 6 flushes and cleans the surface of the centrifugal pump impeller 8 with the chemical agent through the cleaning pipe 41 and the cleaning nozzle 42, thereby realizing comprehensive self-cleaning of the centrifugal pump impeller 8.

[0063] The transmission rod 63 is driven to move by the electric telescopic rod 68, and the transmission rod 63 drives the connecting plate 64 and the electromagnet plate 65 to move, and the electromagnet plate 65 drives the second cleaning brush 67 to clean the side of the centrifugal pump impeller. At the same time, the permanent magnet plate 66 is adsorbed on the surface of the centrifugal pump impeller 8, and then the permanent magnet plate 66 and the second cleaning brush 67 are driven by the centrifugal pump impeller 8 to rotate, so as to comprehensively clean the inner surface of the centrifugal pump casing 3 and the side scale of the centrifugal pump impeller 8, thereby reducing the influence of scale on the centrifugal pump and improving the working stability of the centrifugal pump.

[0064] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A self-cleaning chemical centrifugal pump, comprising a mounting base (1), characterized in that: include A centrifugal pump housing (3) and a mounting housing (5) mounted on one side of the centrifugal pump housing (3); A transmission tube (6), wherein the transmission tube (6) is rotatably mounted on the mounting housing (5); A first filter screen plate (7), the first filter screen plate (7) being fixedly mounted on the transmission tube (6) and slidably connected to the mounting housing (5); A filter cleaning mechanism, the filter cleaning mechanism being arranged on the mounting housing (5) and performing self-cleaning on impurities filtered by the first filter screen plate (7); A centrifugal pump impeller cleaning mechanism, the centrifugal pump impeller cleaning mechanism being arranged on the transmission pipe (6) and used for cleaning the surface of the centrifugal pump impeller (8); The centrifugal pump impeller cleaning mechanism comprises a cleaning pipe (41) fixed on a transmission pipe (6) and a plurality of cleaning nozzles (42) mounted on the cleaning pipe (41); the transmission pipe (6) drives the cleaning pipe (41) and the cleaning nozzles (42) to rotate back and forth, thereby flushing scale on one side of the rotating centrifugal pump impeller (8); The filtering and cleaning mechanism comprises two material receiving frames (11) fixedly connected to the mounting shell (5); a first material discharge pipe (12) is fixedly connected to one side of the material receiving frame (11); the first material discharge pipe (12) is provided with an electromagnetic valve; one end of the first material discharge pipe (12) is fixedly connected to a filter box (13); a second filter screen plate (14) is fixedly connected inside the filter box (13); a second material discharge pipe (15) fixedly connected to the mounting shell (5) is fixedly connected to one side of the filter box (13); a third material discharge pipe (16) is fixedly connected to the outer surface of the filter box (13); the third material discharge pipe (16) is provided with an electromagnetic valve; a scraping mechanism connected to the filter box (13) is slidably connected to the second filter screen plate (14) for scraping filter material off the second filter screen plate (14); The scraping mechanism comprises a first transmission shaft (21) rotatably connected to the filter box (13), the first transmission shaft (21) being rotatably connected to the second filter screen plate (14), a first cleaning brush (22) being fixedly connected to the outer surface of the first transmission shaft (21) and being slidably connected to the second filter screen plate (14), and a fan blade (23) being fixedly sleeved on one end of the first transmission shaft (21); It also includes self-cleaning mechanisms; The self-cleaning mechanism comprises a transmission box (61) fixedly connected to a centrifugal pump housing (3); a mounting plate (62) is fixedly connected inside the transmission box (61); a transmission rod (63) is slidably connected to the mounting plate (62); one end of the transmission rod (63) is fixedly connected to a connecting plate (64); one end of the connecting plate (64) is fixedly connected to an electromagnet plate (65); one side of the electromagnet plate (65) is magnetically adsorbed and connected to a permanent magnet plate (66); the permanent magnet plate (66) is slidably connected to the transmission box (61); both sides of the permanent magnet plate (66) are fixedly connected to a second cleaning brush (67); and one end of the transmission rod (63) is fixedly connected to an electric telescopic rod (68) fixedly connected to the transmission box (61) via a connecting rod.

2. A self-cleaning chemical centrifugal pump according to claim 1, characterized in that: The outer surface of the transmission pipe (6) is drivingly connected to a transmission mechanism connected to the centrifugal pump housing (3); The transmission mechanism comprises a transmission motor (31) fixedly connected to the mounting housing (5); an output end of the transmission motor (31) is fixedly connected to a second transmission shaft (32) via a coupling; a first gear (33) is fixedly sleeved on an outer surface of the second transmission shaft (32); and a second gear (34) fixedly sleeved on an outer surface of the first gear (33) is meshingly connected to a second gear (34) fixedly sleeved on a transmission tube (6).

3. A self-cleaning chemical centrifugal pump according to claim 1, characterized in that: One end of the transmission pipe (6) is rotatably connected to a first connecting pipe (43) fixedly connected to the mounting housing (5); one end of the first connecting pipe (43) is fixedly connected to a water inlet pipe (44) fixedly connected to a water outlet end of a centrifugal pump housing (3); an electromagnetic valve is provided on the water inlet pipe (44); and an electromagnetic valve is provided at the output end of the centrifugal pump housing (3).

4. A self-cleaning chemical centrifugal pump according to claim 3, characterized in that: The other end of the transmission tube (6) is rotatably connected to a second connecting tube (51) fixedly connected to the mounting housing (5), and one end of the second connecting tube (51) is fixedly connected to a pump body (52) fixedly connected to the mounting housing (5).

5. A self-cleaning chemical centrifugal pump according to claim 1, characterized in that: One side of the mounting shell (5) is fixedly connected to a mounting pipe (71), and one end of the mounting pipe (71) is fixedly connected to a connecting flange (72).

6. A self-cleaning chemical centrifugal pump according to claim 1, characterized in that: A drive motor (2) and a centrifugal pump housing (3) are fixedly connected to the top of the mounting base (1); an output end of the drive motor (2) is fixedly connected to a drive shaft (4) via a coupling; the drive shaft (4) is rotationally connected to the centrifugal pump housing (3); and one end of the drive shaft (4) is fixedly connected to a centrifugal pump impeller (8).

7. A self-cleaning chemical centrifugal pump according to claim 1, characterized in that: The rotation angle of the first filter screen plate (7) is 30-75 degrees.

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